/* roulang page: index */
:root {
            --primary: #0AEBAF;
            --primary-hover: #08c895;
            --primary-glow: rgba(10, 235, 175, 0.25);
            --secondary: #7928CA;
            --accent: #FF9900;
            --dark-bg: #0D1117;
            --dark-card: #161B22;
            --light-bg: #F8FAFC;
            --pure-white: #FFFFFF;
            --text-title: #0F172A;
            --text-body: #475569;
            --text-light: #94A3B8;
            --border-light: #E2E8F0;
            --border-dark: #30363D;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 12px 30px rgba(15, 23, 42, 0.12);
            --transition: all 0.25s ease-in-out;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--light-bg);
            -webkit-font-smoothing: antialiased;
            letter-spacing: 0.02em;
        }

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

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

        .container {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* 顶部公告与导航 */
        .topbar {
            background-color: #0F172A;
            color: var(--text-light);
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

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

        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 8px var(--primary);
        }

        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            font-size: 18px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-menu a {
            font-weight: 500;
            color: var(--text-title);
            font-size: 15px;
        }

        .nav-menu a:hover {
            color: var(--primary-hover);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-search {
            position: relative;
        }

        .nav-search input {
            background-color: #F1F5F9;
            border: 1px solid transparent;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            width: 180px;
            transition: var(--transition);
            outline: none;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            background-color: #fff;
            width: 220px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #04251B;
            box-shadow: 0 4px 14px var(--primary-glow);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-outline {
            border: 1px solid var(--border-light);
            background: transparent;
            color: var(--text-title);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline-white {
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.05);
            color: #FFFFFF;
        }

        .btn-outline-white:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(10, 235, 175, 0.1);
        }

        /* 统一 Section */
        .section {
            padding: 96px 0;
            position: relative;
        }

        .section-header {
            max-width: 800px;
            margin: 0 auto 64px auto;
            text-align: center;
        }

        .section-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary);
            background-color: rgba(10, 235, 175, 0.12);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            text-align: justify;
        }

        /* 1. Hero 视频遮罩结构 */
        .hero-section {
            position: relative;
            background-color: #07090D;
            color: #fff;
            padding: 140px 0 120px 0;
            overflow: hidden;
            background-image: linear-gradient(to bottom, rgba(7, 9, 13, 0.7), rgba(13, 17, 23, 0.95)), url('/assets/images/c001c2ec609bd8b2.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-dark);
        }

        .hero-container {
            max-width: 1000px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .hero-title {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.01em;
            color: #FFFFFF;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--primary) 0%, #7928CA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 16px;
            line-height: 1.8;
            color: #94A3B8;
            margin-bottom: 40px;
            text-align: justify;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
        }

        .video-preview-trigger {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .video-preview-trigger:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        .play-icon {
            width: 32px;
            height: 32px;
            background-color: var(--primary);
            color: #000;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            padding-left: 2px;
        }

        .hero-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 36px;
        }

        .hero-stat-item h4 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            font-family: monospace;
            margin-bottom: 4px;
        }

        .hero-stat-item p {
            font-size: 13px;
            color: #94A3B8;
        }

        /* 2. 适用人群板块 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .audience-card {
            background-color: var(--pure-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 36px 30px;
            transition: var(--transition);
        }

        .audience-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .audience-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(10, 235, 175, 0.1);
            color: var(--primary-hover);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: bold;
            margin-bottom: 24px;
        }

        .audience-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .audience-card p {
            color: var(--text-body);
            line-height: 1.7;
            font-size: 14px;
        }

        /* 3. 适用准则对比 (谁适合/谁不适合) */
        .contrast-table-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .contrast-col {
            border-radius: var(--radius-md);
            padding: 40px;
        }

        .contrast-fit {
            background-color: #F0FDF4;
            border: 1px solid #BBF7D0;
        }

        .contrast-unfit {
            background-color: #FEF2F2;
            border: 1px solid #FECACA;
        }

        .contrast-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .contrast-fit .contrast-title { color: #166534; }
        .contrast-unfit .contrast-title { color: #991B1B; }

        .contrast-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .contrast-item {
            font-size: 14px;
            line-height: 1.6;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .contrast-fit .contrast-item { color: #14532D; }
        .contrast-unfit .contrast-item { color: #7F1D1D; }

        .contrast-mark {
            font-weight: 900;
            font-size: 16px;
            line-height: 1;
            margin-top: 3px;
        }

        /* 4. 匹配方案板块 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .matrix-card {
            background-color: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .matrix-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .matrix-thumb {
            height: 220px;
            background-color: #0F172A;
            overflow: hidden;
            position: relative;
        }

        .matrix-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .matrix-badge-pos {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(15, 23, 42, 0.85);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            backdrop-filter: blur(4px);
        }

        .matrix-body {
            padding: 32px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .matrix-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .matrix-body p {
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .matrix-specs-tag-group {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .spec-tag {
            background-color: #F1F5F9;
            color: #475569;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* 5. 入口分流与技术选型矩阵 */
        .selection-table-wrap {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow-x: auto;
            box-shadow: var(--shadow-subtle);
        }

        .selection-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

        .selection-table th, .selection-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-light);
        }

        .selection-table th {
            background-color: #F8FAFC;
            font-weight: 700;
            color: var(--text-title);
        }

        .selection-table tr.highlight-row {
            background-color: rgba(10, 235, 175, 0.04);
        }

        .selection-table tr.highlight-row td {
            font-weight: 600;
            color: var(--text-title);
        }

        /* 6. 核心底座与可验证参数 (Dark) */
        .dark-specs-section {
            background-color: var(--dark-bg);
            color: #fff;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }

        .dark-specs-section .section-title {
            color: #fff;
        }

        .dark-specs-section .section-desc {
            color: var(--text-light);
        }

        .specs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .spec-block {
            background-color: var(--dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-sm);
            padding: 30px;
            position: relative;
            overflow: hidden;
        }

        .spec-block::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
        }

        .spec-block h4 {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .spec-block p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }

        /* 7. 方案流程与交付标准 */
        .pipeline-flow {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            position: relative;
        }

        .pipeline-card {
            background-color: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .pipeline-step {
            font-size: 12px;
            font-weight: 800;
            color: var(--primary);
            background-color: rgba(10, 235, 175, 0.1);
            display: inline-block;
            padding: 2px 8px;
            border-radius: 4px;
            width: fit-content;
            margin-bottom: 16px;
        }

        .pipeline-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .pipeline-card p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 8. 案例与转化证据 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .case-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .case-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--secondary);
            background: #F3E8FF;
            padding: 4px 10px;
            border-radius: 4px;
        }

        .case-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 14px;
        }

        .case-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .case-metric-box {
            background-color: #F8FAFC;
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-sm);
            padding: 16px;
            display: flex;
            justify-content: space-around;
            text-align: center;
        }

        .case-metric-val {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-hover);
        }

        .case-metric-lbl {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 9. 奖励预览与试用扶持 */
        .incentive-box {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #fff;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .incentive-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
            color: #FFFFFF;
        }

        .incentive-content p {
            color: #94A3B8;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .incentive-rewards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .reward-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            padding: 20px;
            text-align: center;
        }

        .reward-card strong {
            display: block;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 6px;
        }

        .reward-card span {
            font-size: 13px;
            color: #CBD5E1;
        }

        /* 10. 资讯前沿与深度文章摘要 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .news-img {
            height: 180px;
            background-color: #0F172A;
        }

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

        .news-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 10px;
            display: flex;
            justify-content: space-between;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        /* 11. 平台保障说明板块 */
        .guarantee-strip {
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 48px 0;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .guarantee-icon {
            width: 44px;
            height: 44px;
            background-color: rgba(10, 235, 175, 0.12);
            color: var(--primary-hover);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .guarantee-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 6px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 12. 统一收口与接入对接板块 */
        .cta-section {
            background-color: #07090D;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
            border-top: 1px solid var(--border-dark);
            padding: 96px 0;
        }

        .cta-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .cta-text h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .cta-text p {
            font-size: 15px;
            color: #94A3B8;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .cta-form {
            background-color: var(--dark-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 36px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: #CBD5E1;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            background-color: #0D1117;
            border: 1px solid var(--border-dark);
            color: #FFFFFF;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px var(--primary-glow);
        }

        /* 页脚规范 */
        .site-footer {
            background-color: #0B0E14;
            color: #94A3B8;
            padding: 80px 0 30px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 60px;
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-trust-info {
            display: flex;
            flex-direction: column;
            gap: 12px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
            color: #64748B;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-bottom a {
            color: #64748B;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .audience-grid, .specs-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pipeline-flow {
                grid-template-columns: repeat(3, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .contrast-table-container, .cta-box, .incentive-box {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-search {
                display: none;
            }
            .hero-title {
                font-size: 32px;
            }
            .audience-grid, .matrix-grid, .specs-grid, .cases-grid, .news-grid, .pipeline-flow, .guarantee-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section {
                padding: 60px 0;
            }
            .topbar-content {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
        }