/* roulang page: index */
:root {
            --primary: #00D084;
            --primary-hover: #00b371;
            --secondary: #10B981;
            --accent: #F59E0B;
            --dark-bg: #0B0E14;
            --dark-card: #161B22;
            --dark-border: rgba(255, 255, 255, 0.08);
            --light-bg: #F8FAFC;
            --light-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --text-light: #F1F5F9;
            --border-light: #E2E8F0;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "DIN Alternate", "Roboto Mono", monospace;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.1);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--light-bg);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航栏 */
        .top-bar {
            background-color: #07090D;
            color: #94A3B8;
            font-size: 0.8rem;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
        }
        .status-pulse {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 208, 132, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(0, 208, 132, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 208, 132, 0); }
        }

        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.02em;
        }
        .brand-logo span {
            color: var(--primary);
            background: #E6FBF2;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.85rem;
        }
        .nav-menu {
            display: flex;
            gap: 28px;
            list-style: none;
            align-items: center;
        }
        .nav-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: #334155;
            position: relative;
            padding: 8px 0;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
        }
        .btn-header {
            background-color: var(--dark-bg);
            color: #fff;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid transparent;
        }
        .btn-header:hover {
            background-color: var(--primary);
            color: #07090D;
        }

        /* 基础按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            border: none;
            transition: var(--transition);
            font-size: 0.95rem;
            gap: 8px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #07090D;
            box-shadow: 0 4px 14px rgba(0, 208, 132, 0.35);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 208, 132, 0.45);
        }
        .btn-outline-dark {
            background-color: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-dark:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        /* 板块通用头部 */
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            background: #E8FAF2;
            padding: 4px 12px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            color: var(--text-main);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero 区域 (白皮书获客与推演报告下载) */
        #hero {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.95), rgba(22, 27, 34, 0.95)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: #fff;
            padding: 100px 0 90px;
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
        }
        .hero-content h1 span {
            color: var(--primary);
        }
        .hero-intro {
            font-size: 1.1rem;
            color: #94A3B8;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        .hero-highlights {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 35px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 25px;
        }
        .hero-highlight-item .num {
            font-family: var(--font-mono);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }
        .hero-highlight-item .label {
            font-size: 0.85rem;
            color: #94A3B8;
        }
        .hero-paper-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius-lg);
            padding: 35px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        .paper-badge {
            background: rgba(245, 158, 11, 0.2);
            color: var(--accent);
            padding: 4px 10px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 15px;
        }
        .paper-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .paper-summary {
            font-size: 0.9rem;
            color: #94A3B8;
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .paper-toc {
            list-style: none;
            margin-bottom: 25px;
            background: rgba(0, 0, 0, 0.25);
            padding: 15px;
            border-radius: var(--radius-sm);
        }
        .paper-toc li {
            font-size: 0.85rem;
            color: #CBD5E1;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .paper-toc li:last-child {
            margin-bottom: 0;
        }
        .paper-toc li::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }
        .paper-form input {
            width: 100%;
            padding: 14px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            margin-bottom: 12px;
            font-size: 0.9rem;
        }
        .paper-form input:focus {
            outline: none;
            border-color: var(--primary);
        }

        /* 2. 即时看板区 */
        #dashboard {
            padding: 80px 0;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
        }
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .dash-card {
            background: var(--light-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }
        .dash-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .dash-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-weight: 500;
        }
        .dash-metric {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .dash-metric span {
            font-size: 1rem;
            color: var(--text-muted);
            margin-left: 4px;
        }
        .dash-sub {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* 3. 左资讯流 + 右热榜板块 */
        #news-stream {
            padding: 90px 0;
            background: var(--light-bg);
        }
        .split-stream-grid {
            display: grid;
            grid-template-columns: 1.8fr 1.2fr;
            gap: 40px;
        }
        .stream-col-title {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 25px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .stream-article-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 24px;
            margin-bottom: 20px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
        }
        .stream-article-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #CBD5E1;
        }
        .stream-img-box {
            width: 140px;
            height: 100px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: #E2E8F0;
        }
        .stream-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .stream-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .stream-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .stream-meta {
            font-size: 0.75rem;
            color: #94A3B8;
            display: flex;
            gap: 15px;
        }

        /* 右侧热榜 */
        .hot-rank-panel {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 14px 0;
            border-bottom: 1px dashed var(--border-light);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-num {
            font-family: var(--font-mono);
            font-size: 1.25rem;
            font-weight: 800;
            color: #94A3B8;
            width: 24px;
            text-align: center;
        }
        .rank-item:nth-child(1) .rank-num { color: #EF4444; }
        .rank-item:nth-child(2) .rank-num { color: #F59E0B; }
        .rank-item:nth-child(3) .rank-num { color: var(--primary); }
        .rank-content {
            flex-grow: 1;
        }
        .rank-title {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .rank-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }
        .rank-heat {
            color: var(--accent);
            font-weight: 600;
        }

        /* 4. 专题条板块 (城市/联赛切换条联动) */
        #leagues-strip {
            padding: 30px 0;
            background: #07090D;
            color: #fff;
            border-top: 1px solid rgba(255,255,255,0.05);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .strip-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
            overflow-x: auto;
            white-space: nowrap;
        }
        .strip-title {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .strip-chip {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: #CBD5E1;
            cursor: pointer;
            transition: var(--transition);
        }
        .strip-chip:hover, .strip-chip.active {
            background: var(--primary);
            color: #07090D;
            font-weight: 600;
            border-color: var(--primary);
        }

        /* 5. 核心优势区：6大智能分析维度 */
        #features {
            padding: 90px 0;
            background: #fff;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-box {
            background: var(--light-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
        }
        .feature-box:hover {
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .feature-icon-bar {
            width: 48px;
            height: 48px;
            background: #E8FAF2;
            color: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            font-weight: 800;
        }
        .feature-box h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .feature-box p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 6. 技术体系解析与数据验证 */
        #about-tech {
            padding: 90px 0;
            background: var(--light-bg);
            border-top: 1px solid var(--border-light);
        }
        .tech-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .tech-preview {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
        }
        .tech-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .tech-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        .tech-spec-list {
            list-style: none;
            margin-top: 25px;
        }
        .tech-spec-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 18px;
        }
        .tech-spec-item .dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            margin-top: 8px;
            flex-shrink: 0;
        }
        .tech-spec-item strong {
            display: block;
            color: var(--text-main);
            font-size: 0.95rem;
        }
        .tech-spec-item span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 7. 产品矩阵与推荐方案 */
        #solutions {
            padding: 90px 0;
            background: #fff;
        }
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .solution-card {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            background: #fff;
            position: relative;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .solution-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(0, 208, 132, 0.15);
        }
        .badge-sol {
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--primary);
            color: #07090D;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
        }
        .solution-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .solution-price {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .solution-price small {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: normal;
        }
        .solution-features {
            list-style: none;
            margin-bottom: 30px;
            flex-grow: 1;
        }
        .solution-features li {
            font-size: 0.88rem;
            color: #475569;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .solution-features li::before {
            content: "•";
            color: var(--primary);
            font-size: 1.2rem;
        }

        /* 8. 深色沉浸式模型内核 */
        #algorithm-core {
            background-color: var(--dark-bg);
            color: #fff;
            padding: 100px 0;
            border-top: 1px solid var(--dark-border);
            border-bottom: 1px solid var(--dark-border);
        }
        .algo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .algo-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            padding: 30px;
            border-radius: var(--radius-md);
            margin-bottom: 20px;
        }
        .algo-card h4 {
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .algo-card p {
            font-size: 0.9rem;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* 9. 结果对比：传统 vs 智能推演 */
        #benchmark {
            padding: 90px 0;
            background: #fff;
        }
        .table-wrap {
            overflow-x: auto;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .benchmark-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        .benchmark-table th, .benchmark-table td {
            padding: 18px 24px;
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border-light);
        }
        .benchmark-table th {
            background-color: var(--light-bg);
            color: var(--text-main);
            font-weight: 700;
        }
        .benchmark-table tr:last-child td {
            border-bottom: none;
        }
        .col-highlight {
            background-color: rgba(0, 208, 132, 0.04);
            font-weight: 600;
            color: #065f46;
        }
        .status-tag-yes {
            display: inline-flex;
            align-items: center;
            color: #059669;
            font-weight: 700;
            gap: 4px;
        }
        .status-tag-no {
            display: inline-flex;
            align-items: center;
            color: #94A3B8;
            gap: 4px;
        }

        /* 10. 里程碑与版本演进 */
        #milestones {
            padding: 90px 0;
            background: var(--light-bg);
        }
        .timeline-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .timeline-grid::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 20px;
            right: 20px;
            height: 2px;
            background: #CBD5E1;
            z-index: 1;
        }
        .timeline-node {
            position: relative;
            z-index: 2;
            padding-top: 10px;
        }
        .node-dot {
            width: 32px;
            height: 32px;
            background: #fff;
            border: 3px solid var(--primary);
            border-radius: 50%;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.75rem;
            color: var(--primary);
            box-shadow: 0 0 0 6px rgba(0, 208, 132, 0.15);
        }
        .node-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
        }
        .node-date {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--primary);
            font-size: 0.85rem;
            margin-bottom: 6px;
        }
        .node-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .node-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 11. 实战推演复盘区 */
        #case-studies {
            padding: 90px 0;
            background: #fff;
        }
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .case-card {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            background: var(--light-bg);
            transition: var(--transition);
        }
        .case-card:hover {
            box-shadow: var(--shadow-md);
        }
        .case-img-wrap {
            height: 220px;
            overflow: hidden;
            background: #1E293B;
        }
        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .case-card:hover .case-img-wrap img {
            transform: scale(1.05);
        }
        .case-body {
            padding: 28px;
            flex-grow: 1;
        }
        .case-match-tag {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .case-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .case-metrics-bar {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            background: #fff;
            padding: 14px;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            border: 1px solid var(--border-light);
        }
        .case-metric-cell span {
            display: block;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .case-metric-cell strong {
            font-family: var(--font-mono);
            font-size: 1.1rem;
            color: var(--text-main);
        }
        .case-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 12. 媒体与合作伙伴 */
        #partners {
            padding: 60px 0;
            background: #FAFBFD;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .partner-list {
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
        }
        .partner-item {
            font-size: 1.1rem;
            font-weight: 700;
            color: #94A3B8;
            letter-spacing: 0.05em;
            transition: var(--transition);
        }
        .partner-item:hover {
            color: var(--text-main);
        }

        /* 13. 底部收口行动区 (CTA) */
        #cta {
            padding: 90px 0;
            background: linear-gradient(135deg, #07090D 0%, #161B22 100%);
            color: #fff;
            text-align: center;
            position: relative;
        }
        .cta-box {
            max-width: 780px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 2.3rem;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }
        .cta-title span {
            color: var(--primary);
        }
        .cta-desc {
            font-size: 1.05rem;
            color: #94A3B8;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            justify-content: center;
            max-width: 520px;
            margin: 0 auto 25px;
        }
        .cta-form input {
            flex-grow: 1;
            padding: 16px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
        }
        .cta-form input:focus {
            outline: none;
            border-color: var(--primary);
        }
        .trust-pills {
            display: flex;
            gap: 20px;
            justify-content: center;
            font-size: 0.8rem;
            color: #64748B;
        }
        .trust-pills span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 页脚设计 */
        footer.site-footer {
            background-color: #05070A;
            color: #94A3B8;
            padding: 70px 0 30px;
            font-size: 0.88rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-logo span {
            color: var(--primary);
        }
        .footer-brief {
            line-height: 1.7;
            font-size: 0.85rem;
            margin-bottom: 20px;
            color: #64748B;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            color: #fff;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-contact p {
            margin-bottom: 8px;
            font-size: 0.85rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #475569;
        }
        .footer-bottom a {
            color: #64748B;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* 移动端菜单与适配 */
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-main);
        }

        @media (max-width: 1024px) {
            .hero-grid, .tech-grid, .algo-grid, .split-stream-grid, .case-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid, .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
                border-bottom: 1px solid var(--border-light);
            }
            .nav-menu.open {
                display: flex;
            }
            .header-action {
                display: none;
            }
            .hero-content h1 {
                font-size: 2.1rem;
            }
            .hero-highlights {
                grid-template-columns: 1fr;
            }
            .dashboard-grid, .features-grid, .solutions-grid, .timeline-grid {
                grid-template-columns: 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .stream-article-item {
                flex-direction: column;
            }
            .stream-img-box {
                width: 100%;
                height: 160px;
            }
        }