/* roulang page: index */
:root {
            --primary: #0F3A2E;
            --primary-light: #165342;
            --accent: #00D084;
            --accent-hover: #00b371;
            --accent-glow: rgba(0, 208, 132, 0.2);
            --dark: #0B0F12;
            --dark-section: #0D131A;
            --dark-card: #141C24;
            --cyan: #00A3BF;
            --bg-light: #F7F9FA;
            --bg-white: #FFFFFF;
            --text-main: #111827;
            --text-muted: #4B5563;
            --text-light: #9CA3AF;
            --border-light: #E5E7EB;
            --border-dark: #222E3C;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
            --shadow-lg: 0 14px 28px rgba(0,0,0,0.08);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container: 1240px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部通栏状态条 */
        .top-bar {
            background-color: var(--dark);
            color: #D1D5DB;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent);
            display: inline-block;
        }

        /* 主导航 */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .brand-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            font-weight: 800;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-item {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 0;
            position: relative;
        }
        .nav-item:hover, .nav-item.active {
            color: var(--primary);
        }
        .nav-item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: var(--transition);
        }
        .nav-item:hover::after, .nav-item.active::after {
            width: 100%;
        }

        /* 按钮与UI组件 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            gap: 8px;
        }
        .btn-primary {
            background-color: var(--accent);
            color: var(--dark);
            box-shadow: 0 4px 14px var(--accent-glow);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 208, 132, 0.35);
        }
        .btn-dark {
            background-color: var(--primary);
            color: #ffffff;
        }
        .btn-dark:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-outline {
            border: 1px solid var(--border-light);
            background-color: #ffffff;
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-white {
            border: 1px solid rgba(255,255,255,0.25);
            background-color: rgba(255,255,255,0.05);
            color: #ffffff;
        }
        .btn-outline-white:hover {
            background-color: rgba(255,255,255,0.15);
            border-color: #ffffff;
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            background-color: rgba(0, 208, 132, 0.12);
            color: var(--primary);
            border: 1px solid rgba(0, 208, 132, 0.3);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 基础板块样式 */
        .page-section {
            padding: 88px 0;
            position: relative;
        }
        .bg-white-sec {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .bg-dark-sec {
            background-color: var(--dark-section);
            color: #ffffff;
        }
        .bg-dark-sec .section-title {
            color: #ffffff;
        }
        .bg-dark-sec .section-desc {
            color: #9CA3AF;
        }
        .bg-dark-sec .section-tag {
            background-color: rgba(0, 208, 132, 0.15);
            color: var(--accent);
            border-color: rgba(0, 208, 132, 0.3);
        }

        /* 1. 首屏对比 Hero 板块 */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #092019 0%, #0F3A2E 60%, #081a14 100%);
            color: #ffffff;
            padding: 80px 0 100px;
            overflow: hidden;
        }
        .hero-bg-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            opacity: 0.18;
            background-image: url('/assets/images/1512fa8677cb2156.png');
            background-size: cover;
            background-position: center;
            pointer-events: none;
        }
        .hero-layout {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto 50px;
        }
        .hero-h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-h1 span {
            color: var(--accent);
        }
        .hero-lead {
            font-size: 17px;
            color: #D1D5DB;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-cta-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }
        
        /* 首屏 Before/After 并置卡片 */
        .comparison-hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 1060px;
            margin: 0 auto;
        }
        .compare-hero-card {
            border-radius: var(--radius-md);
            padding: 30px;
            position: relative;
        }
        .card-before {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .card-after {
            background-color: rgba(15, 58, 46, 0.85);
            border: 1px solid var(--accent);
            box-shadow: 0 10px 30px rgba(0, 208, 132, 0.15);
        }
        .compare-tag {
            font-size: 13px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 16px;
        }
        .tag-before { background-color: rgba(239, 68, 68, 0.2); color: #FCA5A5; }
        .tag-after { background-color: var(--accent); color: var(--dark); }
        .compare-title { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
        .compare-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
        .compare-list li { font-size: 14.5px; display: flex; align-items: flex-start; gap: 10px; line-height: 1.6; }
        .icon-cross { color: #EF4444; font-weight: bold; }
        .icon-check { color: var(--accent); font-weight: bold; }

        /* 2. 赛事数据架构与品牌介绍区 */
        .dual-column-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 50px;
            align-items: center;
        }
        .dual-media-box {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
        }
        .dual-media-box img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .floating-stat-box {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background: rgba(15, 58, 46, 0.95);
            color: #ffffff;
            padding: 18px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--accent);
            backdrop-filter: blur(8px);
        }
        .floating-stat-box .num { font-size: 26px; font-weight: 800; color: var(--accent); }
        .floating-stat-box .txt { font-size: 13px; color: #E5E7EB; }

        /* 3. 核心优势六宫格 */
        .grid-3-col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 208, 132, 0.5);
        }
        .feature-icon-badge {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(0, 208, 132, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .feature-h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
        .feature-desc { font-size: 14.5px; color: var(--text-muted); line-height: 1.7; }

        /* 4. 热门数据产品矩阵卡片 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .product-card {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .product-card.featured {
            border: 2px solid var(--accent);
            position: relative;
        }
        .popular-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background-color: var(--accent);
            color: var(--dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 20px;
            z-index: 3;
        }
        .product-img-wrap {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .product-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .product-card:hover .product-img-wrap img {
            transform: scale(1.05);
        }
        .product-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .product-h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
        .product-desc { font-size: 14.5px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.6; }
        .product-meta-list { list-style: none; margin-bottom: 24px; flex-grow: 1; }
        .product-meta-list li {
            font-size: 13.5px;
            color: var(--text-muted);
            padding: 7px 0;
            border-bottom: 1px dashed var(--border-light);
            display: flex;
            justify-content: space-between;
        }

        /* 5. 技术架构与深色理念区 */
        .tech-diagram-wrap {
            background-color: var(--dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .tech-step-item {
            text-align: center;
            position: relative;
            padding: 20px 14px;
            background: rgba(255,255,255,0.02);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.05);
        }
        .tech-step-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .tech-step-h4 { font-size: 16px; font-weight: 700; color: #ffffff; margin-bottom: 8px; }
        .tech-step-p { font-size: 13px; color: #9CA3AF; line-height: 1.6; }

        /* 6. 应用场景板块 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .scenario-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .scenario-img-box {
            height: 150px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 18px;
        }
        .scenario-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scenario-h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }
        .scenario-p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

        /* 7. 指标统计条 */
        .stats-strip {
            background: linear-gradient(135deg, var(--primary) 0%, #0b251e 100%);
            color: #ffffff;
            padding: 56px 0;
            border-top: 1px solid rgba(0, 208, 132, 0.2);
            border-bottom: 1px solid rgba(0, 208, 132, 0.2);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-unit-val {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 8px;
            font-variant-numeric: tabular-nums;
        }
        .stat-unit-lbl {
            font-size: 15px;
            color: #D1D5DB;
            font-weight: 500;
        }

        /* 8. 案例展示 */
        .case-item-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 40px;
            margin-bottom: 30px;
        }
        .case-thumb {
            height: 280px;
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .case-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-content-h3 { font-size: 22px; font-weight: 700; margin-bottom: 14px; color: var(--text-main); }
        .case-quote {
            background: var(--bg-light);
            border-left: 3px solid var(--accent);
            padding: 14px 18px;
            font-size: 14.5px;
            color: var(--text-muted);
            margin-bottom: 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        /* 9. 口碑评价 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background-color: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .testimonial-text {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: italic;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .user-avatar {
            width: 44px;
            height: 44px;
            background-color: var(--primary);
            color: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }
        .user-name { font-size: 15px; font-weight: 700; color: var(--text-main); }
        .user-org { font-size: 13px; color: var(--text-light); }

        /* 10. 行业动态与简报 */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .insight-card {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .insight-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .insight-cover {
            height: 180px;
            overflow: hidden;
        }
        .insight-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .insight-info { padding: 24px; }
        .insight-date { font-size: 12.5px; color: var(--text-light); margin-bottom: 8px; }
        .insight-h3 { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; line-height: 1.4; }
        .insight-p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

        /* 11. 差异对比表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-light);
            font-size: 14.5px;
        }
        .compare-table th {
            background-color: #F9FAFB;
            font-weight: 700;
            color: var(--text-main);
        }
        .compare-table th.highlight, .compare-table td.highlight {
            background-color: rgba(0, 208, 132, 0.05);
            color: var(--primary);
            font-weight: 600;
        }

        /* 12. FAQ 手风琴 */
        .faq-container {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 16.5px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
            background-color: #FAFAFA;
        }
        .faq-icon {
            font-size: 18px;
            transition: var(--transition);
            color: var(--text-light);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--accent);
        }

        /* 13. 最终转化与保障表单 */
        .cta-box-card {
            background: linear-gradient(135deg, #0F3A2E 0%, #061A14 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #ffffff;
            border: 1px solid rgba(0, 208, 132, 0.3);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-form {
            background: #ffffff;
            padding: 32px;
            border-radius: var(--radius-md);
            color: var(--text-main);
        }
        .form-h3 { font-size: 19px; font-weight: 700; margin-bottom: 20px; color: var(--text-main); }
        .form-group { margin-bottom: 16px; }
        .form-group label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            font-size: 14px;
            background-color: #F9FAFB;
        }
        .form-control:focus {
            border-color: var(--accent);
            background-color: #ffffff;
        }

        /* 页脚 */
        .footer {
            background-color: var(--dark);
            color: #9CA3AF;
            padding: 64px 0 32px;
            font-size: 14px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-col-h4 { font-size: 15px; font-weight: 700; color: #ffffff; margin-bottom: 18px; }
        .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-links a:hover { color: var(--accent); }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        /* 底部固定转化条 */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(11, 15, 18, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(0, 208, 132, 0.3);
            padding: 12px 0;
            z-index: 999;
            box-shadow: 0 -4px 16px rgba(0,0,0,0.2);
        }
        .sticky-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .sticky-info {
            display: flex;
            align-items: center;
            gap: 16px;
            color: #ffffff;
            font-size: 14.5px;
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .dual-column-grid, .cta-box-card { grid-template-columns: 1fr; }
            .grid-3-col, .product-grid, .testimonial-grid, .insight-grid { grid-template-columns: repeat(2, 1fr); }
            .tech-diagram-wrap, .scenario-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .top-bar { display: none; }
            .hero-h1 { font-size: 32px; }
            .comparison-hero-grid, .grid-3-col, .product-grid, .testimonial-grid, .insight-grid, .scenario-grid, .stats-grid, .tech-diagram-wrap, .case-item-grid { grid-template-columns: 1fr; }
            .nav-links { display: none; }
            .hero-cta-group { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .sticky-info { display: none; }
            .sticky-flex { justify-content: center; width: 100%; }
            .sticky-flex .btn { width: 100%; }
        }