/* roulang page: index */
:root {
            --bg-deep: #0A0F1D;
            --bg-surface: #0E162B;
            --bg-elevated: #121C35;
            --bg-glass: rgba(18, 28, 53, 0.72);
            --bg-glass-active: rgba(30, 41, 59, 0.85);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-highlight: rgba(0, 245, 212, 0.35);
            --neon-cyan: #00F5D4;
            --neon-blue: #38BDF8;
            --tech-indigo: #2563EB;
            --text-title: #F8FAFC;
            --text-body: #94A3B8;
            --text-muted: #64748B;
            --glow-shadow: 0 0 25px rgba(0, 245, 212, 0.35);
            --card-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        /* 基础重置与排版规范 */
        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            background-color: var(--bg-deep);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.68;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-body);
            font-size: 0.96rem;
        }

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

        a:hover, a:focus {
            color: var(--neon-blue);
        }

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

        .tabular-num {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        /* 容器与通用板块 */
        .page-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        .content-section {
            padding: 5.5rem 0;
            position: relative;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-alt {
            background-color: var(--bg-surface);
        }

        .section-elevated {
            background-color: var(--bg-elevated);
        }

        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 3.75rem auto;
        }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.9rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            background: rgba(0, 245, 212, 0.1);
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 245, 212, 0.25);
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 2.15rem;
            margin-bottom: 1rem;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-body);
            margin: 0 auto;
            line-height: 1.7;
        }

        /* 玻璃拟态卡片系统 */
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            padding: 2rem;
            box-shadow: var(--card-shadow);
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
            height: 100%;
        }

        .glass-card:hover {
            border-color: var(--border-highlight);
            background: var(--bg-glass-active);
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 245, 212, 0.12);
        }

        /* 霓虹发光按钮 */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--neon-cyan);
            color: #050B17;
            font-weight: 700;
            font-size: 0.98rem;
            padding: 0.85rem 1.85rem;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            box-shadow: 0 0 22px rgba(0, 245, 212, 0.45);
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .btn-neon:hover, .btn-neon:focus {
            color: #050B17;
            background: #22ffe3;
            transform: scale(1.02);
            box-shadow: 0 0 32px rgba(0, 245, 212, 0.7);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-title);
            font-weight: 600;
            font-size: 0.98rem;
            padding: 0.85rem 1.85rem;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            cursor: pointer;
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .btn-ghost:hover, .btn-ghost:focus {
            background: rgba(255, 255, 255, 0.12);
            color: var(--neon-cyan);
            border-color: var(--neon-cyan);
        }

        /* 顶部微通知栏 */
        .top-micro-bar {
            height: 38px;
            background: rgba(10, 15, 29, 0.92);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.78rem;
            display: flex;
            align-items: center;
            z-index: 1010;
            position: relative;
        }

        .micro-signal {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--neon-cyan);
        }

        .pulse-dot {
            width: 7px;
            height: 7px;
            background-color: var(--neon-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--neon-cyan);
            animation: pulse-glow 2s infinite;
        }

        @keyframes pulse-glow {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.35; transform: scale(1.3); }
        }

        /* 渐变通栏双行吸顶主导航 */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: linear-gradient(180deg, rgba(14, 22, 43, 0.95) 0%, rgba(10, 15, 29, 0.92) 100%);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 245, 212, 0.15);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: -0.01em;
        }

        .brand-logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--tech-indigo), var(--neon-cyan));
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #050B17;
            font-size: 1.1rem;
            box-shadow: 0 0 14px rgba(0, 245, 212, 0.4);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-body);
            font-size: 0.92rem;
            font-weight: 500;
            position: relative;
            padding: 0.4rem 0;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--neon-cyan);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0%;
            height: 2px;
            background: var(--neon-cyan);
            transition: var(--transition-smooth);
            box-shadow: 0 0 8px var(--neon-cyan);
        }

        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-title);
            font-size: 1.25rem;
            padding: 0.4rem 0.75rem;
            border-radius: 6px;
            cursor: pointer;
        }

        /* 移动端抽屉层 */
        .mobile-drawer {
            display: none;
            background: rgba(10, 15, 29, 0.98);
            border-top: 1px solid var(--border-glass);
            padding: 1.5rem;
        }

        .mobile-drawer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-drawer li {
            margin-bottom: 1.1rem;
        }

        .mobile-drawer a {
            font-size: 1.05rem;
            color: var(--text-title);
            display: block;
        }

        /* 1. 首屏 Banner 对比区 */
        .hero-section {
            padding: 5.5rem 0 6rem 0;
            background: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.22) 0%, rgba(10, 15, 29, 0.96) 75%), url('/assets/images/f230b04a972f1ee0.jpg') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 15, 29, 0.88);
            backdrop-filter: blur(2px);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-title-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(37, 99, 235, 0.25);
            border: 1px solid rgba(0, 245, 212, 0.4);
            color: var(--neon-cyan);
            padding: 0.4rem 1.1rem;
            border-radius: 9999px;
            font-size: 0.84rem;
            margin-bottom: 1.4rem;
        }

        .hero-h1 {
            font-size: 3.1rem;
            line-height: 1.22;
            margin-bottom: 1.4rem;
            background: linear-gradient(180deg, #FFFFFF 0%, #CBD5E1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.12rem;
            max-width: 820px;
            color: #94A3B8;
            margin-bottom: 2.2rem;
            line-height: 1.75;
        }

        /* 模拟检索交互控制台 */
        .search-console-box {
            background: rgba(14, 22, 43, 0.85);
            border: 1px solid rgba(0, 245, 212, 0.35);
            border-radius: 16px;
            padding: 1.6rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 245, 212, 0.15);
            margin-bottom: 2.8rem;
        }

        .search-input-group {
            display: flex;
            align-items: center;
            background: rgba(5, 11, 23, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 10px;
            padding: 0.4rem 0.6rem 0.4rem 1.2rem;
            transition: var(--transition-smooth);
        }

        .search-input-group:focus-within {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.25);
        }

        .search-input-group input {
            background: transparent;
            border: none;
            color: var(--text-title);
            font-size: 1.05rem;
            width: 100%;
            outline: none;
            margin-bottom: 0;
            box-shadow: none;
        }

        .search-input-group input::placeholder {
            color: var(--text-muted);
        }

        .search-capsules {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem;
            margin-top: 1rem;
        }

        .capsule-tag {
            font-size: 0.78rem;
            color: #94A3B8;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0.25rem 0.65rem;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition-smooth);
        }

        .capsule-tag:hover {
            color: var(--neon-cyan);
            border-color: rgba(0, 245, 212, 0.4);
            background: rgba(0, 245, 212, 0.08);
        }

        /* 首屏 Before/After 对比面板 */
        .before-after-grid {
            margin-top: 2.5rem;
        }

        .compare-box {
            border-radius: 12px;
            padding: 1.5rem;
            height: 100%;
            border: 1px solid var(--border-glass);
        }

        .compare-before {
            background: rgba(15, 23, 42, 0.5);
            border-color: rgba(239, 68, 68, 0.25);
        }

        .compare-after {
            background: rgba(14, 22, 43, 0.85);
            border-color: rgba(0, 245, 212, 0.4);
            box-shadow: 0 10px 30px rgba(0, 245, 212, 0.1);
        }

        /* 2. 指标看板 */
        .metric-card {
            text-align: center;
            padding: 2.2rem 1.5rem;
        }

        .metric-value {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--neon-cyan);
            line-height: 1.1;
            margin-bottom: 0.6rem;
            letter-spacing: -0.03em;
        }

        .metric-label {
            font-size: 0.95rem;
            color: var(--text-title);
            font-weight: 600;
            margin-bottom: 0.35rem;
        }

        .metric-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 3. 架构与保障规格 */
        .spec-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .spec-icon {
            width: 36px;
            height: 36px;
            background: rgba(0, 245, 212, 0.1);
            color: var(--neon-cyan);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1rem;
        }

        /* 4. 六维核心优势 */
        .feature-icon-box {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(0, 245, 212, 0.25));
            border: 1px solid rgba(0, 245, 212, 0.3);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-cyan);
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }

        /* 5. 矩阵产品区 */
        .matrix-badge {
            font-size: 0.75rem;
            padding: 0.2rem 0.6rem;
            background: rgba(56, 189, 248, 0.15);
            color: var(--neon-blue);
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 0.8rem;
        }

        .matrix-checklist {
            list-style: none;
            margin: 1.25rem 0 1.75rem 0;
            padding: 0;
        }

        .matrix-checklist li {
            font-size: 0.88rem;
            color: #94A3B8;
            margin-bottom: 0.65rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .matrix-checklist li i {
            color: var(--neon-cyan);
            font-size: 0.8rem;
        }

        /* 6. 对比表格 */
        .comparison-table-wrapper {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: 14px;
            overflow: hidden;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
            background: transparent;
        }

        .comparison-table th, .comparison-table td {
            padding: 1.25rem 1.5rem;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-body);
            background: transparent;
        }

        .comparison-table th {
            color: var(--text-title);
            font-weight: 700;
            font-size: 0.95rem;
            background: rgba(14, 22, 43, 0.7);
        }

        .comparison-table th.high-col, .comparison-table td.high-col {
            background: rgba(0, 245, 212, 0.05);
            border-left: 1px solid rgba(0, 245, 212, 0.2);
            border-right: 1px solid rgba(0, 245, 212, 0.2);
        }

        .comparison-table td.high-col {
            color: var(--text-title);
            font-weight: 600;
        }

        /* 7. 里程碑时间线 */
        .timeline-container {
            position: relative;
            padding: 1rem 0;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: linear-gradient(180deg, var(--tech-indigo) 0%, var(--neon-cyan) 100%);
            transform: translateX(-50%);
        }

        .timeline-node {
            position: relative;
            margin-bottom: 2.75rem;
        }

        .timeline-dot {
            width: 18px;
            height: 18px;
            background: #0A0F1D;
            border: 3px solid var(--neon-cyan);
            border-radius: 50%;
            position: absolute;
            left: 50%;
            top: 24px;
            transform: translateX(-50%);
            z-index: 2;
            box-shadow: 0 0 12px var(--neon-cyan);
        }

        .timeline-content {
            width: 45%;
            margin-left: auto;
        }

        .timeline-node:nth-child(even) .timeline-content {
            margin-left: 0;
            margin-right: auto;
            text-align: right;
        }

        /* 8. 场景图文 */
        .scenario-card-img {
            border-radius: 12px;
            overflow: hidden;
            height: 240px;
            margin-bottom: 1.25rem;
            position: relative;
        }

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

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

        /* 9. 平台保障徽章 */
        .assurance-badge-box {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.5rem;
            background: rgba(14, 22, 43, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 12px;
        }

        .assurance-badge-icon {
            font-size: 2rem;
            color: var(--neon-cyan);
            flex-shrink: 0;
        }

        /* 10. 口碑评价 */
        .quote-user {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            margin-top: 1.5rem;
        }

        .user-avatar-placeholder {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--tech-indigo), var(--neon-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1rem;
        }

        .rating-stars {
            color: #F59E0B;
            font-size: 0.85rem;
            margin-bottom: 0.75rem;
        }

        /* 11. 资讯动态 */
        .news-item-img {
            height: 190px;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 1.1rem;
        }

        .news-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }

        /* 12. FAQ 折叠器 */
        .faq-accordion-item {
            background: var(--bg-glass);
            border: 1px solid var(--border-glass);
            border-radius: 10px;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-accordion-header {
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--text-title);
            background: transparent;
            user-select: none;
        }

        .faq-accordion-header:hover {
            color: var(--neon-cyan);
        }

        .faq-accordion-header i {
            transition: transform 0.3s ease;
            color: var(--neon-cyan);
        }

        .faq-accordion-header.active i {
            transform: rotate(180deg);
        }

        .faq-accordion-content {
            display: none;
            padding: 0 1.5rem 1.25rem 1.5rem;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* 13. 意向咨询与接入表单 */
        .conversion-wrapper {
            background: linear-gradient(135deg, rgba(14, 22, 43, 0.95), rgba(18, 28, 53, 0.95));
            border: 1px solid rgba(0, 245, 212, 0.4);
            box-shadow: 0 0 45px rgba(0, 245, 212, 0.18);
            border-radius: 18px;
            padding: 3rem 2.5rem;
            position: relative;
            overflow: hidden;
        }

        .conversion-form input,
        .conversion-form select {
            background: rgba(5, 11, 23, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 8px;
            color: var(--text-title);
            padding: 0.75rem 1rem;
            margin-bottom: 1.1rem;
            font-size: 0.92rem;
            box-shadow: none;
            width: 100%;
        }

        .conversion-form input:focus,
        .conversion-form select:focus {
            border-color: var(--neon-cyan);
            box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.2);
            background: rgba(8, 16, 33, 0.9);
            color: var(--text-title);
        }

        .form-check-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1.25rem;
        }

        /* 全局页脚系统 */
        .site-footer {
            background: #060A14;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4.5rem 0 2rem 0;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .footer-col-title {
            color: var(--text-title);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 0.65rem;
        }

        .footer-links a {
            color: var(--text-muted);
            transition: var(--transition-smooth);
        }

        .footer-links a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
        }

        /* 移动端与自适应优化 */
        @media screen and (max-width: 1024px) {
            .hero-h1 { font-size: 2.45rem; }
            .timeline-container::before { left: 24px; }
            .timeline-dot { left: 24px; }
            .timeline-content { width: calc(100% - 60px); margin-left: 60px !important; text-align: left !important; }
        }

        @media screen and (max-width: 768px) {
            .nav-links, .nav-cta-btn { display: none; }
            .mobile-menu-toggle { display: block; }
            .hero-h1 { font-size: 2rem; }
            .content-section { padding: 3.75rem 0; }
            .section-title { font-size: 1.75rem; }
            .conversion-wrapper { padding: 2rem 1.25rem; }
        }