/* roulang page: index */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 3rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            margin-top: 0;
            line-height: 1.3;
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            :root {
                --font-size-metric: 2.2rem;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            font-weight: 600;
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 4px;
            background: #EEE;
            border-radius: var(--radius-pill);
            padding: 3px;
            flex-shrink: 0;
            margin-left: 10px;
        }

        .lang-switch span {
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            cursor: pointer;
            font-weight: 500;
            transition: all var(--transition-fast);
            color: var(--text-muted);
            white-space: nowrap;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch span:hover:not(.active) {
            color: var(--text-heading);
            background: #ddd;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-heading);
            padding: 8px;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm);
                box-shadow: var(--shadow-lg);
                gap: 4px;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 1rem;
            }
            .lang-switch {
                margin-left: 0;
                margin-top: 8px;
                align-self: center;
            }
            .header-right-area {
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .lang-switch-desktop {
                display: none;
            }
            .lang-switch-mobile {
                display: flex;
            }
        }

        @media (min-width: 769px) {
            .lang-switch-mobile {
                display: none;
            }
            .lang-switch-desktop {
                display: flex;
            }
        }

        /* ========== Hero - 秒杀闪购条 ========== */
        .hero-flash {
            position: relative;
            margin-top: 64px;
            background: linear-gradient(135deg, #fff 0%, #E8F2FA 40%, #F3EDE2 100%);
            padding: var(--spacing-lg) 0;
            overflow: hidden;
        }

        .hero-flash::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: var(--accent-orange-light);
            border-radius: 50%;
            opacity: 0.5;
            z-index: 0;
        }

        .hero-flash .container-custom {
            position: relative;
            z-index: 1;
        }

        .flash-banner {
            background: var(--accent-orange);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: var(--spacing-md);
            animation: pulse-banner 2s ease-in-out infinite;
        }

        @keyframes pulse-banner {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.03);
            }
        }

        .flash-banner .flash-icon {
            font-size: 1.2rem;
        }

        .flash-countdown {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 4px;
        }

        .flash-countdown .count-block {
            background: rgba(255, 255, 255, 0.25);
            padding: 3px 8px;
            border-radius: var(--radius-sm);
            font-weight: 800;
            font-size: 1.1rem;
            min-width: 32px;
            text-align: center;
        }

        .hero-flash-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .hero-flash-left h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }

        .hero-flash-left h1 .highlight {
            color: var(--accent-orange);
            position: relative;
        }

        .hero-flash-left .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .hero-flash-left .hero-metrics {
            display: flex;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
        }

        .hero-flash-left .hero-metric-item {
            text-align: center;
            min-width: 70px;
        }

        .hero-flash-left .hero-metric-item .metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
        }

        .hero-flash-left .hero-metric-item .metric-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            background: var(--accent-orange);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            border-bottom: none;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(245, 130, 32, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 130, 32, 0.4);
            color: #fff;
            border-bottom: none;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(245, 130, 32, 0.3);
        }

        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--primary-blue);
            padding: 13px 30px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            border-bottom: 2px solid var(--primary-blue);
            text-decoration: none;
        }

        .btn-secondary:hover {
            background: var(--primary-blue-ghost);
            color: var(--primary-blue-dark);
            border-color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
        }

        .hero-flash-right {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-main-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: var(--spacing-md);
            text-align: center;
            max-width: 380px;
            width: 100%;
            position: relative;
        }

        .hero-main-card .card-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-orange);
            color: #fff;
            padding: 6px 20px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 0.85rem;
            white-space: nowrap;
        }

        .hero-main-card img {
            border-radius: var(--radius-lg);
            width: 100%;
            height: 200px;
            object-fit: cover;
            margin-bottom: var(--spacing-sm);
        }

        .hero-main-card .card-title {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .hero-main-card .card-price {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-orange);
        }

        .hero-main-card .card-price .original {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-decoration: line-through;
            font-weight: 400;
            margin-left: 6px;
        }

        @media (max-width: 768px) {
            .hero-flash-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .hero-flash-left h1 {
                font-size: 2rem;
            }
            .hero-flash-left .hero-metrics {
                gap: var(--spacing-sm);
            }
            .hero-main-card {
                max-width: 100%;
            }
            .hero-flash {
                padding: var(--spacing-md) 0;
            }
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: var(--spacing-2xl) 0;
        }

        .section-block.bg-light {
            background: var(--bg-white);
        }

        .section-block.bg-sand {
            background: var(--warm-sand);
        }

        .section-block.bg-blue-ghost {
            background: var(--primary-blue-ghost);
        }

        .section-block.bg-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }

        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .section-title h2 {
            margin-bottom: 8px;
        }

        .section-title .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section-block {
                padding: var(--spacing-xl) 0;
            }
        }

        /* ========== 指标看板 ========== */
        .metrics-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-blue-ghost);
        }

        .metric-card .metric-number {
            font-size: var(--font-size-metric);
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
            margin-bottom: 8px;
        }

        .metric-card .metric-number.orange {
            color: var(--accent-orange);
        }

        .metric-card .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .metrics-board {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .metrics-board {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .metric-card {
                padding: var(--spacing-md) var(--spacing-sm);
            }
            .metric-card .metric-number {
                font-size: 1.5rem;
            }
        }

        /* ========== 竖屏种草 ========== */
        .vertical-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .vertical-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            aspect-ratio: 3 / 4;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .vertical-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .vertical-card .vc-img {
            flex: 1;
            overflow: hidden;
            position: relative;
        }

        .vertical-card .vc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-normal);
        }

        .vertical-card:hover .vc-img img {
            transform: scale(1.05);
        }

        .vertical-card .vc-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-orange);
            color: #fff;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 700;
            z-index: 2;
        }

        .vertical-card .vc-info {
            padding: var(--spacing-sm);
            text-align: center;
            background: var(--bg-white);
        }

        .vertical-card .vc-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text-heading);
        }

        .vertical-card .vc-info .vc-tag {
            font-size: 0.8rem;
            color: var(--accent-orange);
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .vertical-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .vertical-cards {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .vertical-card {
                aspect-ratio: 3 / 4.5;
            }
        }

        /* ========== 爆款清单 ========== */
        .hot-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
        }

        .hot-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border-left: 4px solid transparent;
        }

        .hot-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-left-color: var(--accent-orange);
            transform: translateX(4px);
        }

        .hot-item .hot-rank {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-orange);
            min-width: 50px;
            text-align: center;
            flex-shrink: 0;
        }

        .hot-item .hot-img {
            width: 100px;
            height: 80px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
        }

        .hot-item .hot-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hot-item .hot-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
            color: var(--text-heading);
        }

        .hot-item .hot-info .hot-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .hot-item .hot-info .hot-tag {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .hot-list {
                grid-template-columns: 1fr;
            }
            .hot-item .hot-img {
                width: 70px;
                height: 60px;
            }
            .hot-item .hot-rank {
                font-size: 1.5rem;
                min-width: 36px;
            }
        }

        /* ========== 服务矩阵 ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: var(--spacing-md);
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .service-card.large {
            grid-row: span 2;
        }

        .service-card .sc-img {
            width: 100%;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
            background: #f0f0f0;
        }

        .service-card.large .sc-img {
            height: 240px;
        }

        .service-card .sc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .service-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .service-card .sc-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .service-matrix {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .service-card.large {
                grid-row: span 1;
            }
            .service-card .sc-img {
                height: 140px;
            }
            .service-card.large .sc-img {
                height: 180px;
            }
        }

        /* ========== 产品截图舞台 ========== */
        .showcase-stage {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

        .showcase-device {
            flex: 1;
            min-width: 280px;
            background: #f5f5f5;
            border-radius: var(--radius-xl);
            padding: 20px;
            box-shadow: var(--shadow-lg);
            position: relative;
            text-align: center;
        }

        .showcase-device img {
            border-radius: var(--radius-md);
            width: 100%;
            max-width: 500px;
            margin: 0 auto;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .showcase-info {
            flex: 1;
            min-width: 280px;
        }

        .showcase-info h3 {
            margin-bottom: var(--spacing-sm);
        }

        .showcase-info .showcase-features {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-md) 0;
        }

        .showcase-info .showcase-features li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
        }

        .showcase-info .showcase-features li i {
            color: var(--accent-orange);
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .showcase-stage {
                flex-direction: column;
                gap: var(--spacing-md);
            }
        }

        /* ========== 卖点三连 ========== */
        .selling-points {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .sp-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border-top: 4px solid transparent;
        }

        .sp-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-top-color: var(--accent-orange);
        }

        .sp-card .sp-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-full);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.5rem;
            color: var(--primary-blue);
        }

        .sp-card h4 {
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-heading);
        }

        .sp-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .selling-points {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 结果对比 ========== */
        .compare-dual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .compare-panel {
            padding: var(--spacing-xl) var(--spacing-lg);
        }

        .compare-panel.traditional {
            background: #f5f5f5;
        }

        .compare-panel.jiuyou {
            background: var(--bg-white);
        }

        .compare-panel h3 {
            margin-bottom: var(--spacing-sm);
            font-weight: 700;
        }

        .compare-panel .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-panel .compare-list li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-medium);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.95rem;
        }

        .compare-panel.traditional .compare-list li i {
            color: #c0392b;
        }

        .compare-panel.jiuyou .compare-list li i {
            color: #27ae60;
        }

        .compare-divider {
            width: 2px;
            background: var(--border-medium);
            position: relative;
        }

        .compare-divider::after {
            content: 'VS';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--accent-orange);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.85rem;
        }

        @media (max-width: 768px) {
            .compare-dual {
                grid-template-columns: 1fr;
            }
            .compare-divider {
                width: 100%;
                height: 2px;
            }
            .compare-divider::after {
                top: 50%;
                left: 50%;
            }
        }

        /* ========== 评价墙 ========== */
        .review-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .review-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            position: relative;
        }

        .review-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .review-card .review-stars {
            color: #f5a623;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .review-card .review-text {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
            font-style: italic;
        }

        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-card .review-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: #e0e0e0;
            overflow: hidden;
            flex-shrink: 0;
        }

        .review-card .review-author .avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .review-card .review-author .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-heading);
        }

        .review-card .review-author .author-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 1024px) {
            .review-wall {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .review-wall {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro {
            max-width: 800px;
            margin: 0 auto;
            padding: var(--spacing-xl) var(--spacing-lg);
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border-left: 5px solid var(--primary-blue);
            font-size: 1.1rem;
            line-height: 2;
            color: var(--text-body);
            box-shadow: var(--shadow-card);
        }

        .brand-intro p {
            margin-bottom: 1.2rem;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* ========== 议程时间线 ========== */
        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 700px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary-blue-ghost);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: var(--spacing-lg);
            padding-left: 20px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 3px var(--primary-blue-ghost);
            z-index: 1;
        }

        .timeline-item .tl-time {
            font-weight: 700;
            color: var(--accent-orange);
            font-size: 0.9rem;
            margin-bottom: 2px;
        }

        .timeline-item .tl-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .timeline-item .tl-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ========== 新闻中心 ========== */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: var(--spacing-xl);
        }

        .news-list .news-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md) 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .news-list .news-item:hover {
            background: var(--primary-blue-ghost);
            border-radius: var(--radius-md);
            padding-left: 12px;
        }

        .news-list .news-date {
            flex-shrink: 0;
            width: 55px;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 8px 4px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }

        .news-list .news-date .date-day {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1;
        }

        .news-list .news-date .date-month {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .news-list .news-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .news-list .news-content .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .news-list .news-content .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-blue);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            border-bottom: none;
        }

        .news-list .news-content .read-more:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .news-sidebar {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            height: fit-content;
        }

        .news-sidebar h4 {
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: var(--text-heading);
        }

        .news-sidebar .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-sidebar .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .news-sidebar .sidebar-list li a {
            font-size: 0.9rem;
            color: var(--text-body);
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .news-sidebar .sidebar-list li a:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .news-sidebar .sidebar-list li .side-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 精选分类 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .cat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            cursor: pointer;
            border-bottom: 3px solid transparent;
            text-decoration: none;
            display: block;
            color: inherit;
        }

        .cat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-bottom-color: var(--accent-orange);
            color: inherit;
            border-bottom: 3px solid var(--accent-orange);
        }

        .cat-card .cat-icon {
            font-size: 2rem;
            color: var(--primary-blue);
            margin-bottom: var(--spacing-sm);
        }

        .cat-card h4 {
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .cat-card .cat-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-accordion .accordion-item {
            margin-bottom: var(--spacing-sm);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--border-light);
        }

        .faq-accordion .accordion-title {
            background: var(--bg-white);
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition-fast);
            font-size: 1rem;
            color: var(--text-heading);
            border: none;
            width: 100%;
            text-align: left;
            position: relative;
        }

        .faq-accordion .accordion-title .faq-num {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-accordion .accordion-title::after {
            content: '+';
            position: absolute;
            right: 20px;
            font-size: 1.3rem;
            color: var(--primary-blue);
            transition: transform var(--transition-fast);
        }

        .faq-accordion .accordion-item.open .accordion-title::after {
            content: '−';
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-content {
            background: rgba(30, 90, 140, 0.03);
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            border-left: 3px solid transparent;
        }

        .faq-accordion .accordion-item.open .accordion-content {
            max-height: 500px;
            padding: 16px 20px;
            border-left-color: var(--primary-blue);
        }

        .faq-accordion .accordion-content p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ========== 加购引导 / 转化表单 ========== */
        .cta-section {
            background: var(--primary-blue-ghost);
            padding: var(--spacing-2xl) 0;
            text-align: center;
        }

        .cta-section .cta-box {
            max-width: 650px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-lg);
        }

        .cta-section .cta-box h3 {
            margin-bottom: 6px;
            font-weight: 700;
        }

        .cta-section .cta-box .cta-desc {
            color: var(--text-muted);
            margin-bottom: var(--spacing-md);
            font-size: 0.95rem;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 2px solid var(--border-medium);
            font-size: 1rem;
            transition: all var(--transition-fast);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.04);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 90, 140, 0.1);
        }

        .cta-form .btn-primary {
            padding: 14px 28px;
            font-size: 1rem;
            white-space: nowrap;
        }

        /* ========== 浮动转化条 ========== */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
            padding: 12px var(--spacing-md);
            z-index: 998;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            transform: translateY(100%);
            transition: transform var(--transition-normal);
        }

        .floating-cta.visible {
            transform: translateY(0);
        }

        .floating-cta .float-text {
            font-weight: 600;
            color: var(--text-heading);
            font-size: 0.95rem;
        }

        .floating-cta .float-highlight {
            color: var(--accent-orange);
            font-weight: 700;
        }

        @media (max-width: 520px) {
            .floating-cta {
                flex-direction: column;
                text-align: center;
                gap: 8px;
                padding: 10px var(--spacing-sm);
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: var(--spacing-2xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer-brand .footer-logo {
            font-weight: 700;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
            border-bottom: none;
        }

        .footer-brand .footer-logo:hover {
            color: #fff;
            border-bottom: none;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #aaa;
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-links h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #aaa;
            font-size: 0.9rem;
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #999;
            gap: var(--spacing-sm);
        }

        .footer-bottom a {
            color: #aaa;
            border-bottom: none;
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 通用工具 ========== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category3 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 2.2rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-heading);
            line-height: 1.3;
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.35;
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 2px;
            background: #EEEEEE;
            border-radius: var(--radius-pill);
            padding: 3px;
            cursor: pointer;
            flex-shrink: 0;
            font-size: 0.85rem;
            font-weight: 500;
            user-select: none;
        }

        .lang-switch span {
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            color: var(--text-muted);
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch-mobile {
            display: none;
        }

        .lang-switch-desktop {
            display: flex;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--primary-blue-ghost);
        }

        /* ========== Hero - 矮横幅 ========== */
        .page-hero {
            background: linear-gradient(135deg, #E8F2FA 0%, #F3EDE2 40%, #FFFFFF 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-light);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(30, 90, 140, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container-custom {
            position: relative;
            z-index: 1;
        }

        .page-hero-content {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

        .page-hero-text {
            flex: 1;
            min-width: 280px;
        }

        .page-hero-badge {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .page-hero-text h1 {
            margin-bottom: var(--spacing-sm);
            font-size: 2.2rem;
        }

        .page-hero-text .hero-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .page-hero-metrics {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            margin-top: var(--spacing-sm);
        }

        .page-hero-metric {
            text-align: center;
            background: rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-lg);
            padding: var(--spacing-sm) var(--spacing-md);
            box-shadow: var(--shadow-card);
            min-width: 100px;
        }

        .page-hero-metric .metric-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.1;
        }

        .page-hero-metric .metric-label {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin-top: 4px;
        }

        .page-hero-visual {
            flex: 0 0 380px;
            max-width: 420px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-width: 260px;
        }

        .page-hero-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 16 / 10;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-warm {
            background: var(--warm-sand);
        }

        .section-ghost {
            background: var(--primary-blue-ghost);
        }

        .section-header {
            margin-bottom: var(--spacing-lg);
        }

        .section-header h2 {
            margin-bottom: var(--spacing-xs);
        }

        .section-header .section-lead {
            font-size: var(--font-size-lg);
            color: var(--text-muted);
            max-width: 700px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-blue);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-xs);
            background: var(--primary-blue-ghost);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }

        /* ========== 卡片 ========== */
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: var(--spacing-md);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-blue-ghost);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
            color: var(--primary-blue);
            flex-shrink: 0;
        }

        .card h3 {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
        }

        .card p {
            color: var(--text-body);
            font-size: 0.95rem;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========== 流程步骤 ========== */
        .process-steps {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            counter-reset: step;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-card);
            position: relative;
            border-left: 4px solid var(--primary-blue);
            transition: all var(--transition-normal);
        }

        .process-step:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .process-step .step-num {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
        }

        .process-step h4 {
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            font-size: 1rem;
        }

        .process-step p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin: 0;
        }

        /* ========== 场景卡片 ========== */
        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--border-light);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .scenario-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .scenario-card-body {
            padding: var(--spacing-md);
        }

        .scenario-card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

        .scenario-card-body p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin: 0;
        }

        /* ========== 对比区块 ========== */
        .compare-block {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .compare-col {
            flex: 1;
            min-width: 280px;
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
        }

        .compare-col-left {
            background: #F5F5F5;
            border: 1px dashed var(--border-medium);
        }

        .compare-col-right {
            background: var(--primary-blue-ghost);
            border: 1px solid var(--primary-blue);
        }

        .compare-col h3 {
            margin-bottom: var(--spacing-sm);
            font-size: 1.2rem;
        }

        .compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-col ul li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            font-size: 0.95rem;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .compare-col ul li:last-child {
            border-bottom: none;
        }

        .compare-col ul li i {
            margin-top: 3px;
            flex-shrink: 0;
        }

        .compare-col-left ul li i {
            color: #999;
        }

        .compare-col-right ul li i {
            color: var(--primary-blue);
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .faq-question {
            padding: var(--spacing-md);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-weight: 600;
            color: var(--text-heading);
            transition: background var(--transition-fast);
            user-select: none;
            font-size: 1rem;
        }

        .faq-question:hover {
            background: var(--primary-blue-ghost);
        }

        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.85rem;
            font-weight: 700;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-normal);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            background: rgba(232, 242, 250, 0.3);
            border-left: 3px solid var(--primary-blue);
            margin: 0 var(--spacing-md);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
        }

        .faq-answer p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
            padding: var(--spacing-xl) 0;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            margin-bottom: var(--spacing-xs);
        }

        .cta-section .cta-lead {
            font-size: var(--font-size-lg);
            opacity: 0.9;
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: var(--spacing-sm);
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 2px solid transparent;
            font-size: 1rem;
            background: #fff;
            color: var(--text-heading);
            transition: all var(--transition-fast);
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.04);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.2);
        }

        .cta-form .btn-cta {
            padding: 14px 28px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .cta-form .btn-cta:hover {
            background: var(--accent-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 130, 32, 0.35);
        }

        .cta-form .btn-cta:active {
            transform: translateY(0);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #CCCCCC;
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: flex;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand {
            flex: 0 0 280px;
            min-width: 220px;
        }

        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            border-bottom: none;
            display: inline-block;
            margin-bottom: var(--spacing-sm);
        }

        .footer-logo:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #999;
            line-height: 1.6;
        }

        .footer-links {
            flex: 1;
            min-width: 150px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #999;
            font-size: 0.9rem;
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: #999;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-bottom a {
            color: #999;
            border-bottom: none;
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-block;
            background: var(--primary-blue);
            color: #fff;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            border-bottom: none;
            text-align: center;
        }

        .btn-primary:hover {
            background: var(--accent-orange);
            color: #fff;
            border-bottom: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(245, 130, 32, 0.3);
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary-blue);
            padding: 11px 23px;
            border-radius: var(--radius-md);
            font-weight: 600;
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            border-bottom: 2px solid var(--primary-blue);
            text-align: center;
        }

        .btn-outline:hover {
            background: var(--primary-blue-ghost);
            color: var(--primary-blue-dark);
            border-color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero-visual {
                flex: 0 0 300px;
                max-width: 340px;
            }
            .page-hero-text h1 {
                font-size: 1.8rem;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
            .site-header {
                height: 60px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                z-index: 999;
                gap: 2px;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .lang-switch-desktop {
                display: none;
            }
            .lang-switch-mobile {
                display: block;
                padding: 8px 16px;
            }
            .lang-switch-mobile .lang-switch {
                display: inline-flex;
            }
            .page-hero-content {
                flex-direction: column;
            }
            .page-hero-visual {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }
            .page-hero-text h1 {
                font-size: 1.6rem;
            }
            .page-hero-metrics {
                gap: var(--spacing-sm);
            }
            .page-hero-metric {
                min-width: 80px;
                padding: var(--spacing-xs) var(--spacing-sm);
            }
            .page-hero-metric .metric-num {
                font-size: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .process-steps {
                flex-direction: column;
            }
            .compare-block {
                flex-direction: column;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                min-width: auto;
            }
            .footer-grid {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            .footer-brand {
                flex: 0 0 auto;
            }
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .page-hero-metrics {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px;
            }
            .page-hero-metric {
                flex: 1 1 40%;
                min-width: 70px;
            }
            .page-hero-metric .metric-num {
                font-size: 1.3rem;
            }
            .page-hero-text h1 {
                font-size: 1.4rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .card {
                padding: var(--spacing-sm);
            }
            .scenario-card-body {
                padding: var(--spacing-sm);
            }
        }

/* roulang page: category2 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 2.2rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            margin-top: 0;
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
            line-height: 1.35;
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            line-height: 1.4;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.93rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 2px;
            background: #EEE;
            border-radius: var(--radius-pill);
            padding: 3px 4px;
            font-size: 0.8rem;
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .lang-switch span {
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: all var(--transition-fast);
            color: var(--text-muted);
            user-select: none;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch span:not(.active):hover {
            color: var(--text-body);
            background: #ddd;
        }

        .lang-switch-mobile {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        .lang-switch-desktop {
            display: flex;
        }

        /* ========== Hero ========== */
        .category-hero {
            position: relative;
            background: linear-gradient(160deg, #E8F2FA 0%, #F3EDE2 40%, #FAFAFA 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            border-radius: var(--radius-full);
            background: rgba(30, 90, 140, 0.04);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: var(--radius-full);
            background: rgba(245, 130, 32, 0.05);
            pointer-events: none;
        }

        .category-hero .container-custom {
            position: relative;
            z-index: 1;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

        .hero-text {
            flex: 1 1 480px;
            min-width: 300px;
        }

        .hero-text .hero-badge {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .hero-text h1 {
            margin-bottom: var(--spacing-sm);
            color: var(--text-heading);
        }

        .hero-text .hero-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-cta-row {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-primary {
            display: inline-block;
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 1rem;
            text-align: center;
            border-bottom: none;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-orange);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary-blue);
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 1rem;
            text-align: center;
            border-bottom: none;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--primary-blue-ghost);
            color: var(--primary-blue-dark);
            border-color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
            transform: translateY(-2px);
        }

        .hero-visual {
            flex: 0 0 380px;
            min-width: 280px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-trust-strip {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border-light);
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            align-items: center;
        }

        .hero-trust-strip span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-strip i {
            color: var(--accent-orange);
            font-size: 0.9rem;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-warm {
            background: var(--warm-sand);
        }

        .section-ghost {
            background: var(--primary-blue-ghost);
        }

        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-xs);
            color: var(--text-heading);
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: var(--font-size-lg);
            margin-bottom: var(--spacing-xl);
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== 青训理念介绍 ========== */
        .intro-block {
            display: flex;
            gap: var(--spacing-xl);
            align-items: center;
            flex-wrap: wrap;
        }

        .intro-block .intro-text {
            flex: 1 1 480px;
            min-width: 300px;
        }

        .intro-block .intro-text p {
            font-size: var(--font-size-lg);
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
        }

        .intro-block .intro-text .highlight-strip {
            border-left: 4px solid var(--primary-blue);
            padding-left: var(--spacing-md);
            margin: var(--spacing-md) 0;
            color: var(--primary-blue-dark);
            font-weight: 500;
            font-size: var(--font-size-lg);
        }

        .intro-block .intro-image {
            flex: 0 0 400px;
            min-width: 280px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .intro-block .intro-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ========== 服务卡片 ========== */
        .service-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-light);
        }

        .service-card .card-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-full);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            font-size: 1.4rem;
            color: var(--primary-blue);
            transition: all var(--transition-fast);
        }

        .service-card:hover .card-icon-circle {
            background: var(--primary-blue);
            color: #fff;
        }

        .service-card h3 {
            font-size: 1.15rem;
            margin-bottom: var(--spacing-xs);
            color: var(--text-heading);
        }

        .service-card p {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }

        .service-card .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-top: var(--spacing-sm);
            font-weight: 500;
        }

        /* ========== 流程步骤 ========== */
        .process-steps {
            display: flex;
            gap: 0;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
        }

        .process-step {
            flex: 1 1 180px;
            min-width: 160px;
            max-width: 220px;
            text-align: center;
            padding: var(--spacing-md);
            position: relative;
        }

        .process-step .step-number {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 2;
        }

        .process-step:hover .step-number {
            background: var(--accent-orange);
            transform: scale(1.1);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .process-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 24px;
            right: -50%;
            width: 100%;
            height: 2px;
            background: var(--border-medium);
            z-index: 1;
            pointer-events: none;
        }

        .process-step:last-child::after {
            display: none;
        }

        /* ========== 数据卡片 ========== */
        .metric-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border-top: 3px solid transparent;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-top-color: var(--accent-orange);
            transform: translateY(-3px);
        }

        .metric-card .metric-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-card .metric-number.orange {
            color: var(--accent-orange);
        }

        .metric-card .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ========== 场景卡片 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-light);
            transform: translateY(-2px);
        }

        .scenario-card .scenario-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--warm-sand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary-blue);
        }

        .scenario-card h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-medium);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-md) var(--spacing-lg);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-heading);
            transition: all var(--transition-fast);
            position: relative;
            font-family: inherit;
        }

        .faq-question:hover {
            color: var(--primary-blue);
        }

        .faq-question .faq-q-badge {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 var(--spacing-lg);
            background: rgba(232, 242, 250, 0.3);
            border-left: 3px solid transparent;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: var(--spacing-md) var(--spacing-lg);
            border-left-color: var(--primary-blue);
        }

        .faq-answer p {
            margin: 0;
            color: var(--text-body);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #E8F2FA 0%, #F3EDE2 50%, #FAFAFA 100%);
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .cta-inner {
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            margin-bottom: var(--spacing-xs);
            color: var(--text-heading);
        }

        .cta-inner p {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
        }

        .cta-form-row {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-form-row input {
            flex: 1 1 280px;
            max-width: 380px;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 2px solid var(--border-medium);
            font-size: 1rem;
            background: var(--bg-white);
            transition: all var(--transition-fast);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
            min-width: 220px;
        }

        .cta-form-row input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 90, 140, 0.1);
        }

        .cta-form-row .btn-primary {
            flex-shrink: 0;
            padding: 14px 32px;
            font-size: 1.05rem;
            border-bottom: none;
        }

        .cta-form-row .btn-primary:hover {
            border-bottom: none;
        }

        .cta-trust-note {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin-top: var(--spacing-sm);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #bbb;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            border-bottom: none;
            text-decoration: none;
            display: inline-block;
            margin-bottom: var(--spacing-xs);
        }

        .footer-brand .footer-logo:hover {
            color: #ddd;
            border-bottom: none;
        }

        .footer-brand p {
            color: #aaa;
            line-height: 1.6;
            margin: 0;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
        }

        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #bbb;
            font-size: 0.88rem;
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.78rem;
            color: #999;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #bbb;
            border-bottom: none;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .service-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-visual {
                flex: 0 0 300px;
                min-width: 240px;
            }
            .intro-block .intro-image {
                flex: 0 0 320px;
            }
            .process-step::after {
                right: -40%;
                width: 80%;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                gap: 2px;
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .lang-switch-desktop {
                display: none;
            }
            .lang-switch-mobile {
                display: block;
                padding: 8px 16px;
            }
            .lang-switch-mobile .lang-switch {
                display: inline-flex;
            }
            .hero-inner {
                flex-direction: column;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .service-cards-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 0 auto;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .metric-cards {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .process-steps {
                flex-direction: column;
                align-items: center;
            }
            .process-step {
                max-width: 100%;
                flex: 1 1 auto;
            }
            .process-step::after {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .intro-block {
                flex-direction: column;
            }
            .intro-block .intro-image {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .cta-form-row {
                flex-direction: column;
                align-items: center;
            }
            .cta-form-row input {
                max-width: 100%;
                width: 100%;
            }
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .category-hero {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
                min-height: auto;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .metric-card .metric-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-trust-strip {
                flex-direction: column;
                gap: 6px;
            }
            .metric-cards {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: var(--spacing-md) var(--spacing-sm);
            }
            .metric-card .metric-number {
                font-size: 1.6rem;
            }
            .hero-cta-row {
                flex-direction: column;
                width: 100%;
            }
            .hero-cta-row .btn-primary,
            .hero-cta-row .btn-outline {
                width: 100%;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
            .scenario-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .service-card {
                padding: var(--spacing-md);
            }
            .faq-question {
                padding: var(--spacing-sm) var(--spacing-md);
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 var(--spacing-md);
            }
            .faq-item.open .faq-answer {
                padding: var(--spacing-sm) var(--spacing-md);
            }
        }

/* roulang page: category1 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 3rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            margin-top: 0;
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
            line-height: 1.35;
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            line-height: 1.4;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.93rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 2px;
            background: #EEEEEE;
            border-radius: var(--radius-pill);
            padding: 3px;
            flex-shrink: 0;
        }

        .lang-switch span {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 500;
            cursor: pointer;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            user-select: none;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch span:hover:not(.active) {
            color: var(--text-heading);
            background: #ddd;
        }

        .lang-switch-mobile {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        /* ========== Hero（创作者主页头图风格：品牌标识+数据徽章+CTA） ========== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(26, 26, 26, 0.7) 0%, rgba(30, 90, 140, 0.8) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-md);
            padding: var(--spacing-xl) var(--spacing-md);
        }

        .hero-brand-avatar {
            width: 90px;
            height: 90px;
            border-radius: var(--radius-full);
            background: var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 2.2rem;
            box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.3);
            margin-bottom: 4px;
            flex-shrink: 0;
        }

        .hero-title {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin: 0;
            line-height: 1.25;
        }

        .hero-subtitle {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .hero-metrics {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 4px;
        }

        .hero-metric-item {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-xl);
            padding: 18px 28px;
            text-align: center;
            min-width: 130px;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .hero-metric-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.1;
        }

        .hero-metric-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 4px;
            display: block;
        }

        .hero-cta {
            display: inline-block;
            margin-top: 4px;
            padding: 14px 36px;
            background: var(--accent-orange);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            border-bottom: none;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(245, 130, 32, 0.4);
        }

        .hero-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 130, 32, 0.5);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-warm {
            background: var(--warm-sand);
        }

        .section-blue-ghost {
            background: var(--primary-blue-ghost);
        }

        .section-heading {
            margin-bottom: var(--spacing-lg);
        }

        .section-heading h2 {
            margin-bottom: 8px;
        }

        .section-heading .subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 650px;
        }

        /* ========== 服务概述（全宽段落+图片） ========== */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .overview-text h3 {
            color: var(--primary-blue);
            margin-bottom: var(--spacing-sm);
        }

        .overview-text p {
            margin-bottom: var(--spacing-sm);
            color: var(--text-body);
            line-height: 1.8;
        }

        .overview-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .overview-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            min-height: 340px;
        }

        /* ========== 核心卖点非对称Grid ========== */
        .feature-grid-asym {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: var(--spacing-md);
        }

        .feature-grid-asym .feature-card-large {
            grid-row: span 2;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-blue-ghost);
        }

        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-blue);
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .feature-card h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-heading);
            margin: 0;
        }

        .feature-card p {
            color: var(--text-body);
            margin: 0;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .feature-card-large {
            background: var(--primary-blue);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            justify-content: center;
        }

        .feature-card-large h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }

        .feature-card-large p {
            color: rgba(255, 255, 255, 0.9);
            margin: 0;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .feature-card-large .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
        }

        /* ========== 适用场景双栏 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary-blue);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-left-color: var(--accent-orange);
        }

        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin: 0;
        }

        .scenario-card p {
            color: var(--text-body);
            margin: 0;
            font-size: 0.93rem;
            line-height: 1.6;
        }

        .scenario-card .scenario-tag {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            align-self: flex-start;
        }

        /* ========== 服务流程步骤列表 ========== */
        .process-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            counter-reset: process;
        }

        .process-item {
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .process-item:hover {
            border-color: var(--primary-blue-ghost);
            box-shadow: var(--shadow-card-hover);
        }

        .process-num {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .process-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin: 0 0 4px;
        }

        .process-body p {
            color: var(--text-body);
            margin: 0;
            font-size: 0.93rem;
            line-height: 1.6;
        }

        /* ========== 对比区 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .compare-col {
            padding: 36px 32px;
        }

        .compare-col-left {
            background: #f5f5f5;
        }

        .compare-col-right {
            background: var(--primary-blue);
            color: #fff;
        }

        .compare-col h3 {
            margin-bottom: var(--spacing-md);
            font-size: 1.2rem;
            font-weight: 700;
        }

        .compare-col-right h3 {
            color: #fff;
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            font-size: 0.93rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-col-right .compare-list li {
            border-bottom-color: rgba(255, 255, 255, 0.2);
        }

        .compare-list li::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
            flex-shrink: 0;
        }

        .compare-col-left .compare-list li::before {
            background: #ccc;
        }

        .compare-col-right .compare-list li::before {
            background: var(--accent-orange);
        }

        .compare-divider {
            text-align: center;
            font-weight: 700;
            font-size: 1.1rem;
            padding: 10px;
            background: #fff;
            color: var(--primary-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        /* ========== 数据卡片区 ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-blue-ghost);
        }

        .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--primary-blue);
            display: block;
            line-height: 1.1;
        }

        .stat-num.accent {
            color: var(--accent-orange);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
            display: block;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
        }

        .faq-item.active {
            border-left: 3px solid var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            font-weight: 600;
            color: var(--text-heading);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(30, 90, 140, 0.03);
        }

        .faq-num {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-fast);
            color: var(--text-muted);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            color: var(--text-body);
            margin: 0;
            line-height: 1.7;
            font-size: 0.93rem;
        }

        /* ========== CTA区 ========== */
        .cta-section {
            background: var(--primary-blue-ghost);
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .cta-inner {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            margin-bottom: 8px;
            color: var(--primary-blue-dark);
        }

        .cta-inner .cta-subtitle {
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            font-size: 1rem;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border: 2px solid var(--border-medium);
            border-radius: var(--radius-md);
            font-size: 1rem;
            outline: none;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--bg-white);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .cta-form input:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 4px rgba(30, 90, 140, 0.08);
        }

        .cta-btn {
            padding: 14px 32px;
            background: var(--primary-blue);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(30, 90, 140, 0.3);
        }

        .cta-btn:hover {
            background: var(--accent-orange);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(245, 130, 32, 0.35);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            border-bottom: none;
            text-decoration: none;
            display: inline-block;
            margin-bottom: 8px;
        }

        .footer-brand .footer-logo:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .footer-brand p {
            color: #aaa;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #aaa;
            font-size: 0.9rem;
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: #999;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #bbb;
            border-bottom: none;
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            :root {
                --font-size-h1: 2rem;
                --font-size-h2: 1.5rem;
                --font-size-metric: 2.5rem;
            }

            .overview-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .feature-grid-asym {
                grid-template-columns: 1fr 1fr;
            }

            .feature-card-large {
                grid-column: span 2;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .compare-grid {
                grid-template-columns: 1fr;
            }

            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-size-h1: 1.7rem;
                --font-size-h2: 1.35rem;
                --font-size-h3: 1.15rem;
                --font-size-metric: 2rem;
                --spacing-2xl: 50px;
                --spacing-xl: 36px;
            }

            .container-custom {
                padding: 0 var(--spacing-sm);
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: var(--spacing-sm);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                z-index: 999;
                gap: 2px;
            }

            .nav-links.show {
                display: flex;
            }

            .nav-links li a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
                border-bottom: none;
            }

            .lang-switch-desktop {
                display: none;
            }

            .lang-switch-mobile {
                display: block;
            }

            .lang-switch-mobile .lang-switch {
                margin: 8px 0 0;
            }

            .page-hero {
                min-height: 400px;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-metrics {
                gap: var(--spacing-sm);
            }

            .hero-metric-item {
                padding: 14px 18px;
                min-width: 100px;
            }

            .hero-metric-num {
                font-size: 1.5rem;
            }

            .feature-grid-asym {
                grid-template-columns: 1fr;
            }

            .feature-card-large {
                grid-column: span 1;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-item {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: center;
                gap: 6px;
            }

            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-form input {
                min-width: auto;
            }

            .compare-grid {
                grid-template-columns: 1fr;
            }

            .compare-col {
                padding: 24px 20px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --font-size-h1: 1.5rem;
                --font-size-h2: 1.2rem;
                --font-size-metric: 1.6rem;
                --spacing-2xl: 36px;
                --spacing-xl: 28px;
            }

            .page-hero {
                min-height: 340px;
            }

            .hero-brand-avatar {
                width: 64px;
                height: 64px;
                font-size: 1.5rem;
            }

            .hero-title {
                font-size: 1.5rem;
            }

            .hero-subtitle {
                font-size: 0.9rem;
            }

            .hero-metrics {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }

            .hero-metric-item {
                min-width: auto;
                width: 100%;
                max-width: 200px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }

            .stat-num {
                font-size: 1.5rem;
            }

            .feature-card {
                padding: 20px;
            }

            .feature-card-large {
                padding: 24px;
            }

            .section-heading h2 {
                font-size: 1.2rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 2.2rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
            color: var(--text-heading);
            line-height: 1.25;
            margin-bottom: var(--spacing-md);
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: var(--spacing-md);
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.35;
            margin-bottom: var(--spacing-sm);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.93rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 2px;
            background: #EEE;
            border-radius: var(--radius-pill);
            padding: 3px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            flex-shrink: 0;
        }

        .lang-switch span {
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            color: var(--text-muted);
            user-select: none;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch span:not(.active):hover {
            color: var(--text-body);
            background: #ddd;
        }

        .lang-switch-desktop {
            display: flex;
        }

        .lang-switch-mobile {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        /* ========== Hero ========== */
        .page-hero {
            background: linear-gradient(180deg, #E8F2FA 0%, #FFFFFF 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }

        .page-hero .container-custom {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .page-hero-content h1 {
            margin-bottom: var(--spacing-sm);
            font-size: 2.2rem;
        }

        .page-hero-content .hero-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            line-height: 1.6;
        }

        .page-hero-content .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            margin-bottom: var(--spacing-lg);
        }

        .page-hero-content .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-blue-ghost);
            color: var(--primary-blue);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: var(--font-size-sm);
            font-weight: 500;
        }

        .page-hero-content .hero-tag i {
            font-size: 0.8rem;
            color: var(--accent-orange);
        }

        .hero-cta-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-blue);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            border-bottom: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-orange);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary-blue);
            padding: 12px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            background: var(--primary-blue-ghost);
            color: var(--primary-blue-dark);
            border-color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
            transform: translateY(-2px);
        }

        .page-hero-image {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .page-hero-image img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            width: 100%;
            max-width: 520px;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .trust-strip {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }

        .trust-strip span {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            white-space: nowrap;
        }

        .trust-strip .trust-dot {
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
            background: var(--accent-orange);
            flex-shrink: 0;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-heading {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .section-heading h2 {
            margin-bottom: var(--spacing-xs);
        }

        .section-heading p {
            color: var(--text-muted);
            font-size: var(--font-size-lg);
            max-width: 700px;
            margin: 0 auto;
        }

        /* ========== 科技服务矩阵 ========== */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .tech-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            text-align: center;
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .tech-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary-blue-ghost);
        }

        .tech-card-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-lg);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-md);
            font-size: 1.6rem;
            color: var(--primary-blue);
            flex-shrink: 0;
        }

        .tech-card h3 {
            font-size: 1.15rem;
            margin-bottom: var(--spacing-xs);
            color: var(--text-heading);
        }

        .tech-card p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== 技术架构流程 ========== */
        .tech-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            position: relative;
        }

        .tech-flow::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border-medium);
            z-index: 0;
            display: none;
        }

        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-sm);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }

        .flow-step:hover {
            border-color: var(--primary-blue-ghost);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .flow-step-num {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto var(--spacing-sm);
            flex-shrink: 0;
        }

        .flow-step h4 {
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
            font-size: 1rem;
        }

        .flow-step p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== 场景展示 ========== */
        .scene-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .scene-showcase.reverse {
            direction: rtl;
        }

        .scene-showcase.reverse .scene-text {
            direction: ltr;
        }

        .scene-text h3 {
            font-size: 1.4rem;
            margin-bottom: var(--spacing-sm);
        }

        .scene-text p {
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: var(--spacing-sm);
        }

        .scene-text .scene-features {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .scene-text .scene-features li {
            padding: 6px 0;
            padding-left: 24px;
            position: relative;
            color: var(--text-body);
            font-size: 0.95rem;
        }

        .scene-text .scene-features li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 13px;
            width: 10px;
            height: 10px;
            border-radius: 2px;
            background: var(--accent-orange);
            transform: rotate(45deg);
        }

        .scene-image img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        /* ========== 数据指标条 ========== */
        .metrics-strip {
            background: var(--primary-blue);
            padding: var(--spacing-lg) 0;
        }

        .metrics-strip .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            text-align: center;
        }

        .metric-item {
            color: #fff;
        }

        .metric-item .metric-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-orange);
            line-height: 1;
            margin-bottom: 4px;
        }

        .metric-item .metric-label {
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }

        /* ========== 对比区 ========== */
        .compare-section {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .compare-col {
            padding: var(--spacing-xl) var(--spacing-lg);
        }

        .compare-col.old-way {
            background: #f5f5f5;
            border-right: 1px dashed var(--border-medium);
        }

        .compare-col.new-way {
            background: var(--primary-blue-ghost);
        }

        .compare-col h3 {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-md);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-col h3 .badge {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            font-weight: 600;
        }

        .badge-old {
            background: #ddd;
            color: #666;
        }

        .badge-new {
            background: var(--accent-orange);
            color: #fff;
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-body);
        }

        .compare-list li:last-child {
            border-bottom: none;
        }

        .compare-list li i {
            margin-top: 3px;
            flex-shrink: 0;
        }

        .compare-list li i.fa-times {
            color: #c0392b;
        }

        .compare-list li i.fa-check {
            color: #27ae60;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--primary-blue-ghost);
        }

        .faq-question {
            padding: var(--spacing-md) var(--spacing-lg);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-weight: 600;
            color: var(--text-heading);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition-fast);
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }

        .faq-question:hover {
            background: var(--bg-light);
        }

        .faq-question .faq-num {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-fast);
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 var(--spacing-lg);
            background: rgba(232, 242, 250, 0.3);
            border-left: 3px solid transparent;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: var(--spacing-md) var(--spacing-lg);
            border-left-color: var(--primary-blue);
        }

        .faq-answer p {
            margin: 0;
            color: var(--text-body);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #E8F2FA 0%, #F3EDE2 100%);
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .cta-section h2 {
            margin-bottom: var(--spacing-xs);
            font-size: 1.8rem;
        }

        .cta-section .cta-sub {
            color: var(--text-body);
            font-size: var(--font-size-lg);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: var(--spacing-sm);
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: var(--radius-md);
            border: 2px solid var(--border-medium);
            font-size: 1rem;
            background: var(--bg-white);
            transition: all var(--transition-fast);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 90, 140, 0.1);
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-orange);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 130, 32, 0.3);
        }

        .btn-cta:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: #bbb;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            font-size: var(--font-size-sm);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            border-bottom: none;
            text-decoration: none;
            display: inline-block;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand .footer-logo:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .footer-brand p {
            color: #aaa;
            line-height: 1.6;
            margin: 0;
            font-size: var(--font-size-sm);
        }

        .footer-links h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #bbb;
            border-bottom: none;
            font-size: var(--font-size-sm);
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            color: #999;
            font-size: 0.8rem;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: #bbb;
            border-bottom: none;
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero .container-custom {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .page-hero-image {
                order: -1;
            }
            .page-hero-image img {
                max-width: 400px;
            }
            .tech-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tech-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-strip .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-lg);
            }
            .compare-section {
                grid-template-columns: 1fr;
            }
            .compare-col.old-way {
                border-right: none;
                border-bottom: 1px dashed var(--border-medium);
            }
            .scene-showcase {
                grid-template-columns: 1fr;
            }
            .scene-showcase.reverse {
                direction: ltr;
            }
            .scene-image {
                order: -1;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            :root {
                --font-size-h1: 2rem;
            }
            .page-hero-content h1 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
                gap: 2px;
                z-index: 999;
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .lang-switch-desktop {
                display: none;
            }
            .lang-switch-mobile {
                display: flex;
                justify-content: center;
                padding: 8px 0;
            }
            .tech-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .tech-flow {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .metrics-strip .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .metric-item .metric-value {
                font-size: 2rem;
            }
            .compare-col {
                padding: var(--spacing-md);
            }
            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form input {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                gap: 4px;
            }
            .section {
                padding: var(--spacing-lg) 0;
            }
            .page-hero {
                padding: var(--spacing-lg) 0;
            }
            :root {
                --font-size-h1: 1.7rem;
                --font-size-h2: 1.4rem;
            }
            .page-hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-ghost {
                text-align: center;
                justify-content: center;
            }
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .metrics-strip .metrics-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-sm);
            }
            .metric-item .metric-value {
                font-size: 1.8rem;
            }
            .trust-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .page-hero-content .hero-tags {
                gap: 4px;
            }
            .page-hero-content .hero-tag {
                font-size: 0.8rem;
                padding: 4px 10px;
            }
            :root {
                --font-size-h1: 1.5rem;
            }
            .page-hero-content h1 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 3rem;
            --line-height-base: 1.7;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            margin-top: 0;
        }

        h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }

        h2 {
            font-size: var(--font-size-h2);
            font-weight: 600;
            line-height: 1.3;
        }

        h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            line-height: 1.35;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.9rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 600;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 0;
            background: #EEEEEE;
            border-radius: var(--radius-pill);
            padding: 3px;
            flex-shrink: 0;
            cursor: pointer;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .lang-switch span {
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            color: var(--text-muted);
            user-select: none;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch span:hover:not(.active) {
            color: var(--text-body);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        .lang-switch-mobile {
            display: none;
        }

        .lang-switch-desktop {
            display: flex;
        }

        /* ========== Hero - 倒计时环 + 卖点轮播 ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(180deg, #E8F2FA 0%, #F3EDE2 40%, #FAFAFA 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: var(--spacing-2xl);
            flex-wrap: wrap;
        }

        .hero-text {
            flex: 1 1 480px;
            min-width: 300px;
        }

        .hero-badge {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }

        .hero-text h1 {
            font-size: 2.6rem;
            margin-bottom: var(--spacing-sm);
            color: var(--text-heading);
        }

        .hero-text h1 .highlight {
            color: var(--primary-blue);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-body);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
            max-width: 540px;
        }

        .hero-cta-row {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-blue);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            border-bottom: none;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-orange);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .btn-primary:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary-blue);
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            border-bottom: 2px solid var(--primary-blue);
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--primary-blue-ghost);
            color: var(--primary-blue-dark);
            border-color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
            transform: translateY(-2px);
        }

        /* 倒计时环 */
        .countdown-ring-wrapper {
            flex: 0 0 340px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 280px;
        }

        .countdown-ring-container {
            position: relative;
            width: 240px;
            height: 240px;
        }

        .countdown-ring-svg {
            width: 240px;
            height: 240px;
            transform: rotate(-90deg);
        }

        .countdown-ring-bg {
            fill: none;
            stroke: #E8E8E8;
            stroke-width: 10;
        }

        .countdown-ring-progress {
            fill: none;
            stroke: var(--accent-orange);
            stroke-width: 10;
            stroke-linecap: round;
            stroke-dasharray: 628;
            stroke-dashoffset: 157;
            transition: stroke-dashoffset 1s ease;
        }

        .countdown-ring-inner {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .countdown-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
        }

        .countdown-unit {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 4px;
        }

        .countdown-label {
            font-size: 0.85rem;
            color: var(--text-body);
            font-weight: 500;
            margin-top: var(--spacing-sm);
            text-align: center;
            max-width: 200px;
        }

        /* 卖点轮播 */
        .selling-points-carousel {
            margin-top: var(--spacing-md);
            text-align: center;
        }

        .selling-point-slide {
            font-size: 0.95rem;
            color: var(--text-body);
            font-weight: 500;
            padding: 8px 0;
            transition: opacity 0.4s ease;
            min-height: 28px;
        }

        .carousel-dots {
            display: flex;
            gap: 10px;
            justify-content: center;
            margin-top: 10px;
        }

        .carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: var(--radius-full);
            background: var(--border-medium);
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            padding: 0;
        }

        .carousel-dot.active {
            background: var(--accent-orange);
            width: 28px;
            border-radius: var(--radius-pill);
        }

        .carousel-dot:hover {
            background: var(--primary-blue-light);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--bg-white);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .section-header h2 {
            margin-bottom: var(--spacing-xs);
            color: var(--text-heading);
        }

        .section-header .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: var(--spacing-xs);
            background: var(--accent-orange-light);
            padding: 4px 14px;
            border-radius: var(--radius-pill);
        }

        /* ========== 服务介绍卡片 ========== */
        .service-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .service-intro-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .service-intro-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .service-intro-text h3 {
            color: var(--text-heading);
            margin-bottom: var(--spacing-sm);
        }

        .service-intro-text p {
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: var(--spacing-sm);
        }

        .service-intro-features {
            list-style: none;
            padding: 0;
            margin: var(--spacing-md) 0 0;
        }

        .service-intro-features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            color: var(--text-body);
            font-size: 0.95rem;
        }

        .service-intro-features li i {
            color: var(--accent-orange);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ========== 营销服务矩阵卡片 ========== */
        .marketing-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .marketing-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .marketing-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .marketing-card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #E8ECF2;
            position: relative;
        }

        .marketing-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-normal);
        }

        .marketing-card:hover .marketing-card-image img {
            transform: scale(1.04);
        }

        .marketing-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .marketing-card-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .marketing-card-body p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }

        .marketing-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-blue);
            background: var(--primary-blue-ghost);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            align-self: flex-start;
        }

        /* ========== 流程 ========== */
        .process-steps {
            display: flex;
            gap: 0;
            counter-reset: step;
            flex-wrap: wrap;
            justify-content: center;
        }

        .process-step {
            flex: 1 1 180px;
            min-width: 160px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding: var(--spacing-md);
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 40px;
            right: -20px;
            width: 40px;
            height: 2px;
            background: var(--border-medium);
            z-index: 0;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step-icon {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-full);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            position: relative;
            z-index: 1;
            counter-increment: step;
            font-size: 1.6rem;
            color: var(--primary-blue);
            font-weight: 700;
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
            position: relative;
            z-index: 1;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            position: relative;
            z-index: 1;
        }

        /* ========== 场景 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary-blue);
            transition: all var(--transition-normal);
            display: flex;
            gap: var(--spacing-md);
            align-items: flex-start;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-left-color: var(--accent-orange);
        }

        .scenario-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: var(--primary-blue-ghost);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
            color: var(--primary-blue);
        }

        .scenario-info h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .scenario-info p {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== 数据指标 ========== */
        .metrics-row {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            justify-content: center;
        }

        .metric-card {
            flex: 1 1 200px;
            min-width: 180px;
            max-width: 260px;
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .metric-number {
            font-size: var(--font-size-metric);
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
            margin-bottom: 6px;
        }

        .metric-number.accent {
            color: var(--accent-orange);
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-sm);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-left: 3px solid var(--primary-blue);
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            padding: var(--spacing-md);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 14px;
            font-weight: 600;
            color: var(--text-heading);
            font-size: 1rem;
            user-select: none;
            transition: all var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }

        .faq-question:hover {
            background: var(--primary-blue-ghost);
        }

        .faq-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-full);
            background: var(--primary-blue);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .faq-item.active .faq-icon {
            background: var(--accent-orange);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 var(--spacing-md);
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer p {
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
            font-size: 0.95rem;
            background: rgba(232, 242, 250, 0.4);
            padding: var(--spacing-md);
            border-radius: var(--radius-sm);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #E8F2FA 0%, #F3EDE2 50%, #FAFAFA 100%);
            padding: var(--spacing-xl) 0;
            text-align: center;
        }

        .cta-inner {
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: var(--text-heading);
            margin-bottom: var(--spacing-sm);
        }

        .cta-inner p {
            color: var(--text-body);
            font-size: 1rem;
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }

        .cta-form-row {
            display: flex;
            gap: var(--spacing-sm);
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-input {
            flex: 1 1 260px;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid var(--border-medium);
            border-radius: var(--radius-md);
            font-size: 1rem;
            color: var(--text-body);
            background: var(--bg-white);
            transition: all var(--transition-fast);
            box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.03);
        }

        .cta-input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 90, 140, 0.1);
        }

        .cta-input::placeholder {
            color: var(--text-muted);
        }

        .btn-cta {
            padding: 14px 32px;
            background: var(--accent-orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            border-bottom: none;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-cta:hover {
            background: var(--accent-orange-hover);
            color: #fff;
            border-bottom: none;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .btn-cta:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
            border-bottom: none;
            text-decoration: none;
        }

        .footer-brand .footer-logo:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #AAAAAA;
            line-height: 1.7;
            margin: 0;
            max-width: 360px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #AAAAAA;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            border-bottom: none;
            text-decoration: none;
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
        }

        .footer-links ul li a i {
            width: 18px;
            text-align: center;
            margin-right: 4px;
            font-size: 0.85rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: #999;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-bottom a {
            color: #999;
            border-bottom: none;
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: var(--spacing-lg);
            }

            .hero-text {
                flex: 1 1 auto;
                min-width: auto;
            }

            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .hero-cta-row {
                justify-content: center;
            }

            .countdown-ring-wrapper {
                flex: 0 0 auto;
            }

            .marketing-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-intro-grid {
                grid-template-columns: 1fr;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .process-steps {
                gap: var(--spacing-sm);
            }

            .process-step::after {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .nav-links li a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }

            :root {
                --font-size-h1: 2rem;
                --font-size-h2: 1.5rem;
                --font-size-metric: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                box-shadow: var(--shadow-lg);
                padding: var(--spacing-sm);
                gap: 0;
                z-index: 999;
                max-height: 80vh;
                overflow-y: auto;
            }

            .nav-links.show {
                display: flex;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links li a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
                display: block;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .lang-switch-desktop {
                display: none;
            }

            .lang-switch-mobile {
                display: block;
                padding: 12px 16px;
            }

            .lang-switch-mobile .lang-switch {
                display: inline-flex;
            }

            .header-right-area {
                gap: 8px;
            }

            .marketing-card-grid {
                grid-template-columns: 1fr;
                max-width: 450px;
                margin: 0 auto;
            }

            .metrics-row {
                flex-direction: column;
                align-items: center;
            }

            .metric-card {
                max-width: 100%;
                width: 100%;
            }

            .process-steps {
                flex-direction: column;
                align-items: center;
            }

            .process-step {
                max-width: 100%;
                flex: 1 1 auto;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: center;
                gap: 4px;
            }

            .hero-section {
                padding: var(--spacing-xl) 0 var(--spacing-lg);
                min-height: auto;
            }

            .countdown-ring-container {
                width: 180px;
                height: 180px;
            }

            .countdown-ring-svg {
                width: 180px;
                height: 180px;
            }

            .countdown-number {
                font-size: 2.6rem;
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            :root {
                --font-size-h1: 1.8rem;
                --font-size-h2: 1.4rem;
                --font-size-metric: 2rem;
                --spacing-2xl: 50px;
                --spacing-xl: 40px;
            }

            .container-custom {
                padding: 0 var(--spacing-sm);
            }

            .scenario-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }

            .scenario-icon {
                margin: 0 auto;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.5rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .btn-primary,
            .btn-outline,
            .btn-cta {
                padding: 12px 20px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

            .hero-cta-row {
                flex-direction: column;
                width: 100%;
            }

            .cta-form-row {
                flex-direction: column;
            }

            .cta-input {
                width: 100%;
            }

            .countdown-ring-container {
                width: 150px;
                height: 150px;
            }

            .countdown-ring-svg {
                width: 150px;
                height: 150px;
            }

            .countdown-number {
                font-size: 2.2rem;
            }

            .countdown-ring-wrapper {
                min-width: auto;
            }

            :root {
                --font-size-h1: 1.5rem;
                --font-size-h2: 1.25rem;
                --font-size-metric: 1.6rem;
                --spacing-xl: 30px;
                --spacing-lg: 24px;
            }

            .marketing-card-body h4 {
                font-size: 1rem;
            }

            .process-step-icon {
                width: 60px;
                height: 60px;
                font-size: 1.2rem;
            }

            .faq-question {
                font-size: 0.9rem;
                padding: var(--spacing-sm);
            }

            .faq-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
        }

/* roulang page: category6 */
:root {
            --primary-blue: #1E5A8C;
            --primary-blue-light: #2B7DC5;
            --primary-blue-dark: #153D61;
            --primary-blue-ghost: #E8F2FA;
            --accent-orange: #F58220;
            --accent-orange-hover: #E07315;
            --accent-orange-light: #FFF3E8;
            --warm-sand: #F3EDE2;
            --bg-white: #FFFFFF;
            --bg-light: #FAFAFA;
            --bg-dark: #1A1A1A;
            --text-heading: #1A1A1A;
            --text-body: #4A4A4A;
            --text-muted: #888888;
            --text-light: #CCCCCC;
            --border-light: #E8E8E8;
            --border-medium: #DDDDDD;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-pill: 20px;
            --radius-full: 50%;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-2xl: 80px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-lg: 18px;
            --font-size-xl: 20px;
            --font-size-h3: 1.3rem;
            --font-size-h2: 1.8rem;
            --font-size-h1: 2.5rem;
            --font-size-metric: 3rem;
            --line-height-base: 1.7;
        }

        @media (max-width: 768px) {
            :root {
                --font-size-metric: 2.2rem;
                --font-size-h1: 1.9rem;
                --font-size-h2: 1.5rem;
                --font-size-h3: 1.15rem;
                --spacing-xl: 40px;
                --spacing-2xl: 50px;
            }
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: var(--font-size-base);
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--text-body);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 64px;
        }

        a {
            text-decoration: none;
            color: var(--primary-blue);
            transition: color var(--transition-fast), border-color var(--transition-fast);
            border-bottom: 2px solid transparent;
        }

        a:hover {
            color: var(--primary-blue-dark);
            border-bottom-color: var(--primary-blue);
        }

        a:focus {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--primary-blue);
            white-space: nowrap;
            border-bottom: none;
            text-decoration: none;
        }

        .header-logo:hover {
            color: var(--primary-blue-dark);
            border-bottom: none;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary-blue);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .header-right-area {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-fast);
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: var(--primary-blue);
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .nav-links li a.active {
            color: var(--primary-blue);
            font-weight: 700;
            border-bottom-color: var(--primary-blue);
            background: var(--primary-blue-ghost);
        }

        .lang-switch {
            display: flex;
            align-items: center;
            gap: 2px;
            background: #EEEEEE;
            border-radius: var(--radius-pill);
            padding: 3px 4px;
            font-size: 0.85rem;
            cursor: pointer;
            flex-shrink: 0;
            border: 1px solid transparent;
            transition: border-color var(--transition-fast);
        }

        .lang-switch:hover {
            border-color: var(--border-medium);
        }

        .lang-switch span {
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            transition: all var(--transition-fast);
            font-weight: 500;
            color: var(--text-muted);
            user-select: none;
        }

        .lang-switch span.active {
            background: var(--primary-blue);
            color: #fff;
            font-weight: 600;
        }

        .lang-switch-desktop {
            display: flex;
        }

        .lang-switch-mobile {
            display: none;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-light);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .lang-switch-desktop {
                display: none;
            }
            .lang-switch-mobile {
                display: flex;
                justify-content: center;
                padding: var(--spacing-sm) 0;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: var(--spacing-sm) var(--spacing-md);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                gap: 4px;
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-2xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-lg);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
        }

        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            border-bottom: none;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }

        .footer-brand .footer-logo:hover {
            color: var(--accent-orange);
            border-bottom: none;
        }

        .footer-brand p {
            color: #AAAAAA;
            font-size: var(--font-size-sm);
            line-height: 1.6;
            margin: 0;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 6px;
        }

        .footer-links ul li a {
            color: #AAAAAA;
            font-size: var(--font-size-sm);
            border-bottom: none;
            transition: color var(--transition-fast);
        }

        .footer-links ul li a:hover {
            color: #fff;
            border-bottom: 1px solid #fff;
        }

        .footer-links ul li a i {
            margin-right: 6px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: #999;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-bottom a {
            color: #999;
            border-bottom: none;
            font-size: 0.8rem;
        }

        .footer-bottom a:hover {
            color: #fff;
            border-bottom: 1px solid #999;
        }

        @media (max-width: 520px) {
            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ========== 按钮系统 ========== */
        .btn-primary {
            display: inline-block;
            background: var(--primary-blue);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            border-bottom: none;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-orange);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(245, 130, 32, 0.3);
            border-bottom: none;
        }

        .btn-primary:focus {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--primary-blue);
            padding: 11px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--primary-blue);
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            border-bottom: none;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--primary-blue-ghost);
            border-color: var(--primary-blue-dark);
            color: var(--primary-blue-dark);
            border-bottom: 2px solid var(--primary-blue-dark);
        }

        .btn-outline:focus {
            outline: 3px solid var(--accent-orange);
            outline-offset: 3px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
        }

        .section-label {
            display: inline-block;
            background: var(--accent-orange-light);
            color: var(--accent-orange);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            max-width: 700px;
            line-height: 1.6;
        }

        /* ========== Hero 分类页 ========== */
        .hero-category {
            background: linear-gradient(180deg, #E8F2FA 0%, #F6F9FC 40%, var(--bg-white) 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(30, 90, 140, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(245, 130, 32, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-category .container-custom {
            position: relative;
            z-index: 1;
        }

        .hero-category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        @media (max-width: 768px) {
            .hero-category-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
        }

        .hero-category-content h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-sm);
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        .hero-category-content h1 span {
            color: var(--primary-blue);
        }

        .hero-category-content .hero-desc {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            line-height: 1.7;
        }

        .hero-category-content .hero-pain-point {
            font-weight: 600;
            color: var(--accent-orange);
            font-size: 1.05rem;
            margin-bottom: var(--spacing-md);
            padding-left: var(--spacing-sm);
            border-left: 3px solid var(--accent-orange);
            line-height: 1.6;
        }

        .hero-form-card {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
        }

        .hero-form-card h3 {
            font-size: var(--font-size-h3);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-xs);
        }

        .hero-form-card .form-subtitle {
            color: var(--text-muted);
            font-size: var(--font-size-sm);
            margin-bottom: var(--spacing-md);
        }

        .hero-form-card .form-row {
            display: flex;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .hero-form-card input {
            flex: 1;
            min-width: 180px;
            padding: 12px 16px;
            border: 2px solid var(--border-light);
            border-radius: var(--radius-md);
            font-size: 1rem;
            transition: all var(--transition-fast);
            background: var(--bg-light);
            color: var(--text-heading);
        }

        .hero-form-card input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(30, 90, 140, 0.08);
            background: var(--bg-white);
        }

        .hero-form-card input::placeholder {
            color: #BBB;
        }

        .hero-form-card .btn-primary {
            flex-shrink: 0;
        }

        @media (max-width: 520px) {
            .hero-form-card .form-row {
                flex-direction: column;
            }
            .hero-form-card input {
                min-width: auto;
            }
            .hero-form-card .btn-primary {
                width: 100%;
            }
        }

        /* ========== 案例卡片网格 ========== */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        @media (max-width: 1024px) {
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .cases-grid {
                grid-template-columns: 1fr;
            }
        }

        .case-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary-blue-ghost);
        }

        .case-card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: #E8ECF0;
            flex-shrink: 0;
        }

        .case-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .case-card-tag {
            display: inline-block;
            background: var(--primary-blue-ghost);
            color: var(--primary-blue);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            align-self: flex-start;
        }

        .case-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }

        .case-card-body p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
            line-height: 1.6;
            flex: 1;
        }

        .case-card-meta {
            display: flex;
            gap: var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--text-muted);
            align-items: center;
            flex-wrap: wrap;
        }

        .case-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .case-card-meta i {
            color: var(--primary-blue);
            font-size: 0.75rem;
        }

        /* ========== 指标看板 ========== */
        .metrics-section {
            background: var(--primary-blue);
            padding: var(--spacing-xl) 0;
            color: #fff;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            text-align: center;
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-md);
            }
        }

        @media (max-width: 400px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg) var(--spacing-md);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: background var(--transition-fast);
        }

        .metric-card:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .metric-number {
            font-size: var(--font-size-metric);
            font-weight: 800;
            color: #fff;
            line-height: 1;
            margin-bottom: var(--spacing-xs);
        }

        .metric-number .plus {
            color: var(--accent-orange);
            font-size: 1.6rem;
            vertical-align: super;
        }

        .metric-label {
            font-size: var(--font-size-sm);
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
        }

        /* ========== 合作流程 ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
            position: relative;
        }

        @media (max-width: 900px) {
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: var(--spacing-md);
        }

        .process-step .step-number {
            width: 48px;
            height: 48px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto var(--spacing-sm);
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
        }

        .process-step:hover .step-number {
            background: var(--accent-orange);
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(245, 130, 32, 0.35);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .process-step p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        .process-connector {
            display: none;
        }

        @media (min-width: 901px) {
            .process-steps::before {
                content: '';
                position: absolute;
                top: 40px;
                left: 15%;
                right: 15%;
                height: 2px;
                background: var(--border-medium);
                z-index: 0;
                border-radius: 1px;
            }
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            border-left: 4px solid var(--primary-blue);
            line-height: 1.9;
            font-size: 1.05rem;
            color: var(--text-body);
        }

        .deep-content h2 {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-md);
        }

        .deep-content p {
            margin-bottom: var(--spacing-sm);
        }

        .deep-content .highlight-box {
            background: var(--primary-blue-ghost);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            margin: var(--spacing-md) 0;
            border-left: 3px solid var(--primary-blue);
        }

        .deep-content .highlight-box strong {
            color: var(--primary-blue);
        }

        /* ========== 合作伙伴类型 ========== */
        .partner-types {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        @media (max-width: 768px) {
            .partner-types {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 400px) {
            .partner-types {
                grid-template-columns: 1fr;
            }
        }

        .partner-type-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-normal);
        }

        .partner-type-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--primary-blue-ghost);
        }

        .partner-type-card .partner-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-blue-ghost);
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.5rem;
            color: var(--primary-blue);
        }

        .partner-type-card h4 {
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
            font-size: 1rem;
        }

        .partner-type-card p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            margin: 0;
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-accordion .accordion-item {
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            transition: box-shadow var(--transition-fast);
        }

        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-accordion .accordion-title {
            background: var(--bg-white);
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition-fast);
            border-radius: var(--radius-md);
            position: relative;
        }

        .faq-accordion .accordion-title:hover {
            background: var(--primary-blue-ghost);
        }

        .faq-accordion .accordion-title .faq-icon {
            width: 32px;
            height: 32px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }

        .faq-accordion .accordion-title::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            margin-left: auto;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            font-size: 1rem;
        }

        .faq-accordion .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary-blue);
        }

        .faq-accordion .accordion-item.is-active .accordion-title {
            background: var(--primary-blue-ghost);
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }

        .faq-accordion .accordion-item.is-active .faq-icon {
            background: var(--accent-orange);
        }

        .faq-accordion .accordion-content {
            padding: 0 var(--spacing-lg) var(--spacing-md);
            background: rgba(232, 242, 250, 0.3);
            border-left: 3px solid var(--primary-blue);
            margin-left: var(--spacing-lg);
            margin-right: var(--spacing-sm);
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            color: var(--text-body);
            line-height: 1.8;
            display: none;
        }

        .faq-accordion .accordion-item.is-active .accordion-content {
            display: block;
        }

        @media (max-width: 520px) {
            .faq-accordion .accordion-title {
                padding: var(--spacing-sm) var(--spacing-md);
                font-size: 0.95rem;
            }
            .faq-accordion .accordion-content {
                padding: 0 var(--spacing-md) var(--spacing-sm);
                margin-left: var(--spacing-sm);
            }
        }

        /* ========== CTA 区 ========== */
        .cta-section {
            background: linear-gradient(135deg, #E8F2FA 0%, #F0F5FA 40%, #FDF8F3 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            border: 1px solid var(--border-light);
        }

        .cta-section h2 {
            font-size: var(--font-size-h2);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: var(--spacing-xs);
        }

        .cta-section .cta-subtitle {
            font-size: var(--font-size-lg);
            color: var(--text-body);
            margin-bottom: var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form-row {
            display: flex;
            gap: var(--spacing-xs);
            max-width: 520px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form-row input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 2px solid var(--border-medium);
            border-radius: var(--radius-md);
            font-size: 1rem;
            transition: all var(--transition-fast);
            background: var(--bg-white);
            color: var(--text-heading);
            box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
        }

        .cta-form-row input:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 4px rgba(30, 90, 140, 0.06);
        }

        .cta-form-row input::placeholder {
            color: #BBB;
        }

        .cta-form-row .btn-primary {
            flex-shrink: 0;
            padding: 14px 32px;
            font-size: 1.05rem;
        }

        @media (max-width: 520px) {
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-row input {
                min-width: auto;
            }
            .cta-form-row .btn-primary {
                width: 100%;
            }
        }

        /* ========== 引用块 ========== */
        .testimonial-block {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            position: relative;
            margin-top: var(--spacing-md);
        }

        .testimonial-block::before {
            content: '\f10d';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 2rem;
            color: var(--primary-blue-ghost);
            position: absolute;
            top: var(--spacing-sm);
            left: var(--spacing-md);
            z-index: 0;
        }

        .testimonial-block blockquote {
            position: relative;
            z-index: 1;
            margin: 0;
            padding: 0;
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.8;
            font-style: italic;
            border: none;
        }

        .testimonial-block .attribution {
            margin-top: var(--spacing-sm);
            font-weight: 600;
            color: var(--primary-blue);
            font-style: normal;
            font-size: 0.9rem;
        }

        /* ========== 图片占位 ========== */
        .img-placeholder {
            background: #E8ECF0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #B0B8C0;
            font-size: 0.9rem;
            min-height: 180px;
            border-radius: var(--radius-md);
        }

        /* ========== 通用工具类 ========== */
        .text-center {
            text-align: center;
        }

        .mb-0 {
            margin-bottom: 0;
        }

        .mb-sm {
            margin-bottom: var(--spacing-sm);
        }

        .mb-md {
            margin-bottom: var(--spacing-md);
        }

        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }

        .mb-xl {
            margin-bottom: var(--spacing-xl);
        }