/* roulang page: index */
:root {
            --bg-base: #0A0F1D;
            --bg-surface: #0F172A;
            --bg-card: rgba(15, 23, 42, 0.78);
            --bg-card-hover: rgba(30, 41, 59, 0.85);
            --primary: #3B82F6;
            --primary-glow: rgba(59, 130, 246, 0.45);
            --cyan: #06B6D4;
            --cyan-glow: rgba(6, 182, 212, 0.35);
            --emerald: #10B981;
            --rose: #F43F5E;
            --text-main: #FFFFFF;
            --text-muted: #94A3B8;
            --text-dark: #64748B;
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(59, 130, 246, 0.6);
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            background-color: var(--bg-base);
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(59, 130, 246, 0.12) 0%, transparent 40%),
                radial-gradient(circle at 85% 65%, rgba(6, 182, 212, 0.09) 0%, transparent 45%),
                radial-gradient(circle at 50% 90%, rgba(15, 23, 42, 0.8) 0%, transparent 50%);
            color: var(--text-main);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* 顶部双行导航系统 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 15, 29, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
        }

        .header-topbar {
            height: 34px;
            background: rgba(15, 23, 42, 0.95);
            font-size: 0.8125rem;
            color: var(--text-muted);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
        }

        .header-topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-dot {
            width: 7px;
            height: 7px;
            background-color: var(--emerald);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--emerald);
        }

        .header-mainnav {
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-mainnav .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.02em;
            color: #FFFFFF;
        }

        .logo-symbol {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 900;
            color: #FFFFFF;
            box-shadow: 0 0 18px var(--primary-glow);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
        }

        .nav-link {
            font-size: 0.9375rem;
            color: var(--text-muted);
            font-weight: 500;
            position: relative;
            padding: 6px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: #FFFFFF;
        }

        .nav-link:hover::after, .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            border-radius: 2px;
            box-shadow: 0 0 8px var(--cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
        }

        /* 按钮设计规范 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 0.75rem 1.625rem;
            border-radius: 9999px;
            font-size: 0.9375rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
            min-height: 44px;
            text-align: center;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
            color: #FFFFFF;
            box-shadow: 0 0 25px var(--primary-glow);
        }

        .btn-glow:hover {
            box-shadow: 0 0 35px var(--primary-glow);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-outline {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid var(--border-glass);
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(30, 41, 59, 0.8);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.25);
            transform: translateY(-2px);
        }

        /* 基础板块与排版样式 */
        .section {
            padding: 6rem 0;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-alt {
            background: rgba(15, 23, 42, 0.45);
        }

        .section-header {
            max-width: 860px;
            margin: 0 auto 3.75rem auto;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--cyan);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            padding: 4px 14px;
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid rgba(6, 182, 212, 0.3);
            border-radius: 9999px;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1.25rem;
            color: #FFFFFF;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.0625rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 玻璃拟态卡片系统 */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 25px 45px -10px rgba(59, 130, 246, 0.2);
            background: var(--bg-card-hover);
        }

        .badge-pill {
            display: inline-block;
            font-size: 0.75rem;
            padding: 2px 10px;
            border-radius: 9999px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* 板块1：Hero 首屏旗舰指标看板 */
        .hero-section {
            padding: 5rem 0 6rem 0;
            position: relative;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 29, 0.85) 0%, rgba(10, 15, 29, 0.98) 100%);
            z-index: 1;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 3.5rem;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #FFFFFF 30%, #93C5FD 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.125rem;
            color: var(--text-muted);
            margin-bottom: 2.25rem;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 1.25rem;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
        }

        .hero-board {
            background: rgba(15, 23, 42, 0.85);
            border: 1px solid rgba(59, 130, 246, 0.35);
            border-radius: var(--radius-xl);
            padding: 2rem;
            box-shadow: 0 0 45px rgba(59, 130, 246, 0.18);
        }

        .board-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 1.25rem;
            border-bottom: 1px solid var(--border-glass);
            margin-bottom: 1.5rem;
        }

        .board-title {
            font-weight: 600;
            font-size: 0.9375rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .board-metrics {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
            margin-bottom: 1.5rem;
        }

        .board-metric-item {
            background: rgba(10, 15, 29, 0.6);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glass);
        }

        .board-metric-value {
            font-size: 1.75rem;
            font-weight: 700;
            color: #FFFFFF;
            font-feature-settings: "tnum";
            margin-top: 4px;
        }

        .board-metric-value.cyan { color: var(--cyan); }
        .board-metric-value.emerald { color: var(--emerald); }

        .terminal-feed {
            background: #060913;
            border-radius: var(--radius-md);
            padding: 1rem;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
            font-size: 0.775rem;
            line-height: 1.6;
            color: #94A3B8;
        }

        .feed-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 4px;
        }

        .feed-row.warn { color: #F59E0B; }
        .feed-row.blocked { color: var(--rose); }
        .feed-row.passed { color: var(--emerald); }

        /* 板块2：痛点陈述 */
        .painpoint-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .painpoint-card {
            border-top: 3px solid var(--rose);
        }

        .painpoint-card h3 {
            font-size: 1.15rem;
            margin: 1rem 0 0.75rem 0;
            color: #FFFFFF;
        }

        .painpoint-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 板块3：服务矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .matrix-icon-box {
            width: 48px;
            height: 48px;
            background: rgba(59, 130, 246, 0.15);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan);
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }

        /* 板块4：操作演示工作台 */
        .stage-box {
            border-radius: var(--radius-xl);
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid var(--border-glass);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
        }

        .stage-visual {
            position: relative;
            height: 100%;
            min-height: 380px;
        }

        .stage-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .stage-content {
            padding: 3.5rem;
        }

        .workflow-step {
            display: flex;
            gap: 1.25rem;
            margin-bottom: 1.75rem;
        }

        .step-index {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.2);
            color: var(--cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.875rem;
            flex-shrink: 0;
        }

        /* 板块5：技术优势 2x3 网格 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        /* 板块6：场景化产品矩阵 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            align-items: stretch;
        }

        .product-card.featured {
            border: 1px solid var(--primary);
            box-shadow: 0 0 35px rgba(59, 130, 246, 0.25);
            transform: scale(1.03);
            background: rgba(20, 31, 56, 0.9);
        }

        .product-badge-flag {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 9999px;
        }

        /* 板块7：审核效能对比看板 */
        .comparison-table-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            background: var(--bg-card);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 1.25rem 1.75rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .comparison-table th {
            background: rgba(10, 15, 29, 0.85);
            color: var(--text-muted);
            font-size: 0.875rem;
            font-weight: 600;
        }

        .comparison-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .compare-val-bad {
            color: #F87171;
            font-weight: 600;
        }

        .compare-val-good {
            color: var(--emerald);
            font-weight: 700;
        }

        /* 板块8：演进历程时间轴 */
        .timeline-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .timeline-card {
            border-top: 2px solid var(--cyan);
            position: relative;
        }

        .timeline-node-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--cyan);
            position: absolute;
            top: -7px;
            left: 2rem;
            box-shadow: 0 0 10px var(--cyan);
        }

        /* 板块9：态势大屏条 */
        .data-banner {
            padding: 4.5rem 0;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .data-banner-overlay {
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 29, 0.9);
        }

        .counter-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .counter-num {
            font-size: 3rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 0.5rem;
        }

        .counter-num span {
            color: var(--cyan);
            font-size: 1.75rem;
        }

        /* 板块10：垂直论坛案例 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .case-thumb {
            height: 200px;
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 1.25rem;
        }

        .case-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .glass-card:hover .case-thumb img {
            transform: scale(1.05);
        }

        /* 板块11：站长口碑评价 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .review-rating {
            color: #F59E0B;
            font-size: 0.875rem;
            margin-bottom: 1rem;
        }

        .reviewer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 1.5rem;
            padding-top: 1.25rem;
            border-top: 1px solid var(--border-glass);
        }

        .reviewer-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(59, 130, 246, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--cyan);
        }

        /* 板块12：资讯动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .news-date {
            font-size: 0.8125rem;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        /* 板块13：安全合规保障 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        /* 板块14：接入指南 */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .code-snippet {
            background: #060913;
            border-radius: var(--radius-md);
            padding: 1rem;
            margin-top: 1rem;
            font-family: monospace;
            font-size: 0.775rem;
            color: #38BDF8;
            overflow-x: auto;
        }

        /* 板块15：FAQ 手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        details.faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            margin-bottom: 1rem;
            transition: var(--transition-smooth);
            overflow: hidden;
        }

        details.faq-item[open] {
            border-color: rgba(59, 130, 246, 0.4);
            background: rgba(20, 30, 50, 0.85);
        }

        summary.faq-question {
            list-style: none;
            padding: 1.25rem 1.75rem;
            font-weight: 600;
            font-size: 1.0625rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

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

        summary.faq-question::after {
            content: '+';
            font-size: 1.35rem;
            font-weight: 400;
            color: var(--cyan);
            transition: transform 0.2s ease;
        }

        details[open] summary.faq-question::after {
            content: '−';
        }

        .faq-answer {
            padding: 0 1.75rem 1.5rem 1.75rem;
            color: var(--text-muted);
            font-size: 0.9375rem;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            margin-top: 0.25rem;
            padding-top: 1rem;
        }

        /* 板块16：申请试用表单 */
        .contact-box {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 3.5rem;
            align-items: center;
            background: rgba(15, 23, 42, 0.9);
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-xl);
            padding: 3.5rem;
            box-shadow: 0 0 50px rgba(59, 130, 246, 0.15);
        }

        .form-row {
            margin-bottom: 1.25rem;
        }

        .form-row label {
            display: block;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
            color: var(--text-main);
        }

        .form-input {
            width: 100%;
            background: rgba(10, 15, 29, 0.8);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 0.875rem 1.25rem;
            color: #FFFFFF;
            font-size: 0.9375rem;
            outline: none;
            transition: var(--transition-smooth);
        }

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
        }

        /* 页脚规范 */
        .site-footer {
            background: #060913;
            border-top: 1px solid var(--border-glass);
            padding: 5rem 0 2rem 0;
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 3rem;
            margin-bottom: 4rem;
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 1rem;
            margin-bottom: 1.5rem;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 0.75rem;
        }

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

        .footer-bottom {
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.8125rem;
        }

        /* 移动端与响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .matrix-grid, .painpoint-grid, .security-grid, .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantage-grid, .product-grid, .cases-grid, .reviews-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-grid, .counter-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stage-box, .contact-box {
                grid-template-columns: 1fr;
            }
            .stage-visual {
                min-height: 260px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .header-topbar {
                display: none;
            }
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                height: calc(100vh - 72px);
                background: rgba(10, 15, 29, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 2.5rem 1.5rem;
                gap: 1.5rem;
                transform: translateX(100%);
                transition: transform 0.3s ease;
                border-top: 1px solid var(--border-glass);
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .mobile-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2.15rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .matrix-grid, .painpoint-grid, .advantage-grid, .product-grid, 
            .timeline-grid, .cases-grid, .reviews-grid, .news-grid, 
            .security-grid, .steps-flow, .counter-grid {
                grid-template-columns: 1fr;
            }
            .product-card.featured {
                transform: none;
            }
            .contact-box {
                padding: 2rem 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }