/* roulang page: index */
:root {
            --primary: #0D53E8;
            --primary-hover: #083eb8;
            --accent: #00D287;
            --purple: #7928CA;
            --bg-light: #F8FAFC;
            --card-bg: #FFFFFF;
            --dark-section: #0A0F1D;
            --dark-card: #151D33;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --border-dark: #1E293B;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 9999px;
            --shadow-subtle: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 20px 40px -10px rgba(13, 83, 232, 0.15);
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部微型提示条与主导航 */
        .header-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .top-micro-bar {
            background-color: #0B132B;
            color: #94A3B8;
            font-size: 13px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .top-micro-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-micro-bar a {
            color: #CBD5E1;
        }

        .top-micro-bar a:hover {
            color: var(--accent);
        }

        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 32px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 8px 0;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0%;
            height: 2px;
            background: var(--primary);
            transition: width 0.25s ease;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--primary) 0%, #1a62ff 100%);
            color: #ffffff;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 14px rgba(13, 83, 232, 0.3);
        }

        .nav-cta:hover {
            box-shadow: 0 6px 20px rgba(13, 83, 232, 0.45);
            transform: translateY(-1px);
        }

        /* 移动端菜单切换按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* 基础区块样式 */
        .section-block {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 54px;
        }

        .section-pill {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(13, 83, 232, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            margin-bottom: 14px;
            border: 1px solid rgba(13, 83, 232, 0.15);
        }

        .section-pill.dark {
            background: rgba(0, 210, 135, 0.1);
            color: var(--accent);
            border-color: rgba(0, 210, 135, 0.25);
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 按钮与徽章 */
        .btn-gradient {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            box-shadow: 0 8px 24px rgba(13, 83, 232, 0.25);
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-gradient:hover {
            box-shadow: 0 12px 30px rgba(13, 83, 232, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            background: #FFFFFF;
            color: var(--text-main);
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-subtle);
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 1. 首屏 Banner 轮播展区 (#hero) */
        .hero-section {
            padding: 70px 0 90px;
            background: radial-gradient(circle at top right, rgba(13, 83, 232, 0.05), transparent 60%), #FFFFFF;
            border-bottom: 1px solid var(--border);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(13, 83, 232, 0.06);
            border: 1px solid rgba(13, 83, 232, 0.15);
            border-radius: var(--radius-pill);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -0.8px;
        }

        .hero-title .highlight-text {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-specs-list {
            display: flex;
            gap: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .hero-spec-item strong {
            display: block;
            font-size: 18px;
            color: var(--text-main);
        }

        .hero-spec-item span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-visual-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 16px;
            box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.12);
            border: 1px solid var(--border);
            position: relative;
        }

        .hero-visual-card img {
            border-radius: var(--radius-md);
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .hero-floating-badge {
            position: absolute;
            bottom: -20px;
            left: 30px;
            background: #FFFFFF;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .status-dot {
            width: 10px;
            height: 10px;
            background-color: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(0, 210, 135, 0.2);
        }

        /* 2. 核心指标看板 (#metrics) */
        .metrics-section {
            background: #FFFFFF;
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            padding: 24px;
            border-radius: var(--radius-md);
            background: var(--bg-light);
            border: 1px solid var(--border);
            text-align: center;
            transition: transform 0.2s;
        }

        .metric-card:hover {
            transform: translateY(-3px);
        }

        .metric-number {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .metric-desc {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 3. 平台核心架构与硬核参数 (#about) */
        .about-section {
            background: #FFFFFF;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 56px;
            align-items: center;
        }

        .about-image-wrapper {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
        }

        .about-image-wrapper img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .about-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 20px;
        }

        .about-content p {
            font-size: 15px;
            color: var(--text-body);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .tech-points-box {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-left: 4px solid var(--primary);
            padding: 18px 20px;
            border-radius: 4px var(--radius-md) var(--radius-md) 4px;
            margin-bottom: 24px;
        }

        .tech-points-box h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .tech-points-box p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* 4. 体育服务矩阵与核心优势 (#advantages) */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .matrix-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .matrix-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(13, 83, 232, 0.3);
        }

        .matrix-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .matrix-icon-pill {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(13, 83, 232, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }

        .matrix-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            background: #EFF6FF;
            color: var(--primary);
        }

        .matrix-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .matrix-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 18px;
            flex-grow: 1;
        }

        .matrix-features {
            list-style: none;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        .matrix-features li {
            font-size: 13px;
            color: var(--text-body);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .matrix-features li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }

        /* 5. 热门产品形态与部署版本 (#products) */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .pricing-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-subtle);
            position: relative;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }

        .pricing-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 20px 45px -10px rgba(13, 83, 232, 0.2);
            transform: scale(1.02);
        }

        .featured-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: var(--radius-pill);
        }

        .pricing-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .pricing-subtitle {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .pricing-tagline {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .pricing-list {
            list-style: none;
            margin-bottom: 30px;
            flex-grow: 1;
        }

        .pricing-list li {
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pricing-list li span.dot {
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
        }

        /* 6. 技术底层架构（沉浸深色区） (#technology) */
        .dark-tech-section {
            background-color: var(--dark-section);
            color: #FFFFFF;
        }

        .dark-tech-section .section-title {
            color: #FFFFFF;
        }

        .dark-tech-section .section-subtitle {
            color: #94A3B8;
        }

        .tech-diagram-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .tech-step-card {
            background: var(--dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            position: relative;
            transition: all 0.3s ease;
        }

        .tech-step-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .step-index {
            font-size: 13px;
            font-weight: 800;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
            display: inline-block;
        }

        .tech-step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 10px;
        }

        .tech-step-card p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 7. 业务成效对比矩阵 (#comparison) */
        .comparison-table-wrapper {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-subtle);
            overflow: hidden;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .comparison-table th, .comparison-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border);
        }

        .comparison-table th {
            background: #F8FAFC;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-dim {
            font-weight: 700;
            color: var(--text-main);
            width: 25%;
        }

        .comparison-legacy {
            color: #64748B;
            width: 35%;
        }

        .comparison-ai {
            color: var(--primary);
            font-weight: 600;
            width: 40%;
            background: rgba(13, 83, 232, 0.02);
        }

        .badge-positive {
            display: inline-block;
            background: rgba(0, 210, 135, 0.12);
            color: #059669;
            font-size: 12px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
            margin-left: 6px;
        }

        /* 8. 典型体育场景与案例故事 (#stories) */
        .stories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .story-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-subtle);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease;
        }

        .story-card:hover {
            transform: translateY(-5px);
        }

        .story-card img {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }

        .story-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .story-pill {
            align-self: flex-start;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: #EFF6FF;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        .story-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .story-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .story-meta-stat {
            background: var(--bg-light);
            padding: 10px 14px;
            border-radius: var(--radius-md);
            font-size: 13px;
            color: var(--text-main);
            font-weight: 600;
            border: 1px solid var(--border);
        }

        /* 9. 发展里程碑时间轴 (#roadmap) */
        .timeline-container {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: var(--border);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            width: 50%;
            padding: 0 30px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-node {
            position: absolute;
            top: 8px;
            width: 16px;
            height: 16px;
            background: #FFFFFF;
            border: 4px solid var(--primary);
            border-radius: 50%;
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-node {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-node {
            left: -8px;
        }

        .timeline-content {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-subtle);
        }

        .timeline-year {
            font-size: 13px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .timeline-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .timeline-content p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* 10. 客户与专家评价区 (#testimonials) */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .testi-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-stars {
            color: #F59E0B;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .testi-quote {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 16px;
        }

        .author-info h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 11. 动态资讯与行业解析 (#news) */
        .news-header-flex {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            margin-bottom: 40px;
        }

        .news-header-flex .section-header {
            margin: 0;
            text-align: left;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-item {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all 0.3s ease;
        }

        .news-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
        }

        .news-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 10px;
            display: block;
        }

        .news-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .news-link-btn {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 12. 平台合规与安全体系 (#compliance) */
        .compliance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .compliance-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
        }

        .comp-icon {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(0, 210, 135, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
        }

        .compliance-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .compliance-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.55;
            margin: 0;
        }

        /* 13. 高频业务解答 FAQ (#faq) */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            font-size: 20px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform 0.2s;
        }

        .faq-item[open] summary::after {
            content: "−";
            color: var(--primary);
        }

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

        .faq-answer {
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid transparent;
        }

        /* 14. 转化引导与预约演示 (#contact) */
        .cta-box-wrapper {
            background: linear-gradient(135deg, #0A132C 0%, #15224A 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #FFFFFF;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 25px 50px -12px rgba(10, 19, 44, 0.35);
        }

        .cta-info h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            color: #FFFFFF;
        }

        .cta-info p {
            font-size: 15px;
            color: #CBD5E1;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .contact-channel-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 14px;
            color: #E2E8F0;
        }

        .lead-form-box {
            background: #FFFFFF;
            padding: 32px;
            border-radius: var(--radius-md);
            color: var(--text-main);
        }

        .lead-form-box h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 6px;
        }

        .form-input, .form-select {
            width: 100%;
            padding: 12px 14px;
            font-size: 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            outline: none;
            font-family: inherit;
        }

        .form-input:focus, .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 83, 232, 0.12);
        }

        .form-btn-submit {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, var(--primary) 0%, #1656f0 100%);
            color: #FFFFFF;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
        }

        .form-btn-submit:hover {
            background: var(--primary-hover);
        }

        /* 统一页脚 Footer */
        .site-footer {
            background: #0B1120;
            color: #94A3B8;
            padding: 70px 0 30px;
            border-top: 1px solid var(--border-dark);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h4 {
            font-size: 18px;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.7;
            font-size: 13px;
            margin-bottom: 20px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 13px;
        }

        .footer-links a:hover {
            color: #FFFFFF;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #64748B;
        }

        .footer-bottom a:hover {
            color: #94A3B8;
        }

        /* 响应式断点适配 */
        @media (max-width: 1024px) {
            .hero-grid, .about-grid, .cta-box-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .matrix-grid, .products-grid, .stories-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tech-diagram-grid, .compliance-grid, .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 768px) {
            .top-micro-bar {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                padding: 24px;
                box-shadow: 0 10px 20px rgba(0,0,0,0.08);
                gap: 16px;
                border-bottom: 1px solid var(--border);
            }

            .nav-menu.active {
                display: flex;
            }

            .section-block {
                padding: 60px 0;
            }

            .hero-title {
                font-size: 32px;
            }

            .section-title {
                font-size: 26px;
            }

            .matrix-grid, .products-grid, .stories-grid, .testimonials-grid, .news-grid, .tech-diagram-grid, .compliance-grid, .metrics-grid {
                grid-template-columns: 1fr;
            }

            .timeline-container::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline-node {
                left: 12px !important;
            }

            .cta-box-wrapper {
                padding: 32px 20px;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }