/* roulang page: index */
:root {
            --primary: #1E56A0;
            --primary-hover: #163f77;
            --accent: #00C9A7;
            --accent-hover: #00a88b;
            --bg-light: #F8FAFC;
            --surface: #FFFFFF;
            --text-main: #0F172A;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --navy-dark: #0A192F;
            --border-color: #E2E8F0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-full: 9999px;
            --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            --transition: all 0.25s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        /* 顶部促销公告条 */
        .top-promo-bar {
            background-color: var(--primary);
            color: #ffffff;
            font-size: 0.8125rem;
            padding: 8px 0;
            line-height: 1.4;
        }
        .top-promo-bar a {
            color: #E0F2FE;
            text-decoration: underline;
        }

        /* 主导航 */
        .site-header {
            background-color: var(--surface);
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
        }
        .brand-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .brand-logo svg {
            width: 28px;
            height: 28px;
            fill: var(--primary);
        }
        .nav-menu {
            display: flex;
            list-style: none;
            margin: 0;
            gap: 1.5rem;
            align-items: center;
        }
        .nav-menu a {
            color: var(--text-main);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.25rem 0.5rem;
        }
        .nav-menu a:hover {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .btn {
            display: inline-block;
            font-weight: 600;
            text-align: center;
            border-radius: var(--radius-sm);
            padding: 0.65rem 1.4rem;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff !important;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
        }
        .btn-accent {
            background-color: var(--accent);
            color: #ffffff !important;
        }
        .btn-accent:hover {
            background-color: var(--accent-hover);
        }
        .btn-outline {
            background-color: transparent;
            border-color: #cbd5e1;
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-white {
            background-color: transparent;
            border-color: rgba(255, 255, 255, 0.4);
            color: #ffffff !important;
        }
        .btn-outline-white:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
        }

        /* 统一 Section 排版 */
        .section-padding {
            padding: 4.5rem 0;
        }
        .section-alt {
            background-color: #ffffff;
        }
        .section-header {
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 680px;
            margin: 0 auto;
        }

        /* 1. Hero 搜索与知识入口区 */
        .hero-doc-center {
            position: relative;
            background: linear-gradient(rgba(10, 25, 47, 0.82), rgba(10, 25, 47, 0.88)), url('/assets/images/d2ec11c73ecad94d.webp') center/cover no-repeat;
            color: #ffffff;
            padding: 5.5rem 0 4.5rem;
            text-align: center;
        }
        .hero-badge-tag {
            display: inline-block;
            background-color: rgba(0, 201, 167, 0.2);
            color: var(--accent);
            border: 1px solid rgba(0, 201, 167, 0.3);
            border-radius: var(--radius-full);
            padding: 0.25rem 1rem;
            font-size: 0.85rem;
            margin-bottom: 1.25rem;
            font-weight: 600;
        }
        .hero-doc-center h1 {
            font-size: 2.75rem;
            font-weight: 800;
            margin-bottom: 1.25rem;
            letter-spacing: -0.5px;
            color: #ffffff;
        }
        .hero-doc-center .hero-lead {
            font-size: 1.15rem;
            color: #cbd5e1;
            max-width: 820px;
            margin: 0 auto 2.5rem;
            line-height: 1.7;
        }
        .search-box-wrap {
            max-width: 650px;
            margin: 0 auto 1.5rem;
            position: relative;
        }
        .search-box-wrap input {
            width: 100%;
            height: 3.5rem;
            border-radius: var(--radius-full);
            border: none;
            padding: 0 1.75rem 0 3.25rem;
            font-size: 1rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            background-color: #ffffff;
            color: var(--text-main);
        }
        .search-box-wrap input:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 201, 167, 0.5);
        }
        .search-box-wrap .search-icon {
            position: absolute;
            left: 1.25rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
        }
        .search-chips {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.875rem;
        }
        .search-chips span {
            color: #94a3b8;
            margin-right: 0.25rem;
        }
        .search-chips a {
            background-color: rgba(255, 255, 255, 0.12);
            color: #e2e8f0;
            padding: 0.25rem 0.85rem;
            border-radius: var(--radius-full);
            transition: var(--transition);
        }
        .search-chips a:hover {
            background-color: var(--accent);
            color: #ffffff;
        }

        /* 2. 品类入口 */
        .category-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
            height: 100%;
        }
        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: #cbd5e1;
        }
        .category-icon {
            width: 52px;
            height: 52px;
            background-color: #eff6ff;
            color: var(--primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .category-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
        }

        /* 3. 附近推荐与区域热点 */
        .hotspot-box {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .hotspot-badge {
            display: inline-block;
            font-size: 0.75rem;
            background-color: #fee2e2;
            color: #ef4444;
            padding: 0.15rem 0.5rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-bottom: 0.75rem;
        }
        .hotspot-box h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .hotspot-box p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .hotspot-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8125rem;
            color: var(--text-muted);
            border-top: 1px solid #f1f5f9;
            padding-top: 0.75rem;
        }

        /* 4. 口碑榜 */
        .ranking-item {
            display: flex;
            align-items: center;
            background-color: var(--surface);
            border-radius: var(--radius-md);
            padding: 1.25rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .ranking-item:hover {
            transform: translateX(4px);
            border-color: var(--accent);
        }
        .ranking-number {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--primary);
            width: 48px;
            flex-shrink: 0;
        }
        .ranking-info {
            flex-grow: 1;
            padding: 0 1rem;
        }
        .ranking-info h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }
        .ranking-info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
        }
        .ranking-score {
            text-align: right;
            flex-shrink: 0;
        }
        .ranking-score .score-num {
            font-size: 1.25rem;
            font-weight: 700;
            color: #f59e0b;
        }
        .ranking-score .score-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 5. 保障承诺 */
        .promise-card {
            background-color: #f8fafc;
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            border: 1px dashed #cbd5e1;
            text-align: center;
            height: 100%;
        }
        .promise-card svg {
            width: 40px;
            height: 40px;
            fill: var(--accent);
            margin-bottom: 1rem;
        }
        .promise-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .promise-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* 6. 到店与使用流程 */
        .step-wrapper {
            position: relative;
        }
        .step-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
            position: relative;
            height: 100%;
        }
        .step-idx {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 1.25rem;
        }
        .step-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .step-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* 7. 资讯与战术复盘 */
        .article-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .article-thumb {
            height: 180px;
            overflow: hidden;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .article-card:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-content {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .article-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        .article-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            line-height: 1.4;
        }
        .article-content p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
            flex-grow: 1;
        }

        /* 8. 预约与接入通道 */
        .booking-cta-wrap {
            background: linear-gradient(135deg, var(--navy-dark) 0%, #172a45 100%);
            border-radius: var(--radius-md);
            padding: 3.5rem 2.5rem;
            color: #ffffff;
            box-shadow: var(--shadow-hover);
        }
        .booking-cta-wrap h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
        }
        .booking-cta-wrap p {
            color: #cbd5e1;
            font-size: 1.05rem;
            max-width: 600px;
            margin-bottom: 2rem;
        }

        /* 9. 扩展：实时引擎架构与技术参数 (#technology) */
        .tech-box {
            background-color: var(--navy-dark);
            color: #ffffff;
            padding: 4.5rem 0;
        }
        .tech-inner-card {
            background-color: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 2rem;
            height: 100%;
        }
        .tech-inner-card h3 {
            color: var(--accent);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .tech-inner-card p {
            color: #cbd5e1;
            font-size: 0.9rem;
            margin: 0;
        }

        /* 10. 扩展：数据运营大指标 (#metrics) */
        .metrics-strip {
            background-color: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 3rem 0;
        }
        .metric-cell {
            text-align: center;
        }
        .metric-val {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 0.25rem;
        }
        .metric-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* 11. 扩展：多端分析套件版本 (#products) */
        .plan-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-sm);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .plan-card.featured {
            border: 2px solid var(--primary);
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .plan-ribbon {
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: var(--accent);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.6rem;
            border-radius: var(--radius-sm);
        }
        .plan-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .plan-price {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .plan-features {
            list-style: none;
            margin: 0 0 2rem 0;
            padding: 0;
            flex-grow: 1;
        }
        .plan-features li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0.65rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .plan-features li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }

        /* 12. 扩展：分析师实证评价 (#testimonials) */
        .review-card {
            background-color: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .review-stars {
            color: #f59e0b;
            margin-bottom: 0.75rem;
            font-size: 0.9rem;
        }
        .review-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
            font-style: italic;
        }
        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .reviewer-avatar {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background-color: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }
        .reviewer-name {
            font-size: 0.95rem;
            font-weight: 700;
        }
        .reviewer-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 13. 扩展：合作伙伴与联盟墙 (#partners) */
        .partner-logo-item {
            background-color: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 1.25rem;
            text-align: center;
            font-weight: 600;
            color: #64748b;
            font-size: 0.9rem;
            box-shadow: var(--shadow-sm);
        }

        /* 页脚规范 */
        .site-footer {
            background-color: #0F172A;
            color: #94a3b8;
            padding: 4.5rem 0 2rem;
            font-size: 0.9rem;
        }
        .footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 1rem;
        }
        .footer-col h4 {
            font-size: 1rem;
            color: #ffffff;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.65rem;
        }
        .footer-links a {
            color: #94a3b8;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.8125rem;
            color: #64748b;
        }

        /* 响应式调整 */
        @media screen and (max-width: 1024px) {
            .plan-card.featured {
                transform: none;
            }
        }
        @media screen and (max-width: 640px) {
            .hero-doc-center h1 {
                font-size: 2rem;
            }
            .nav-menu {
                display: none;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .booking-cta-wrap {
                padding: 2.5rem 1.5rem;
            }
        }