/* roulang page: index */
:root {
            --primary: #1e40af;
            --primary-hover: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #2563eb;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #94a3b8;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --border-focus: #93c5fd;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
        }

        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: var(--radius-full);
        }

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

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 190px;
            padding: 8px 14px 8px 34px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            background-color: #f1f5f9;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            width: 230px;
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .search-box svg {
            position: absolute;
            left: 11px;
            width: 15px;
            height: 15px;
            fill: var(--text-light);
        }

        .btn-header {
            padding: 8px 18px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: none;
            cursor: pointer;
        }

        .btn-header:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        /* 英雄区：视频遮罩蓝图 */
        .hero-section {
            position: relative;
            background: radial-gradient(circle at 70% 30%, #1e3a8a 0%, #0f172a 100%);
            color: #ffffff;
            padding: 100px 0 120px;
            overflow: hidden;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: 
                radial-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
                radial-gradient(rgba(37, 99, 235, 0.15) 1px, transparent 1px);
            background-size: 32px 32px;
            background-position: 0 0, 16px 16px;
            opacity: 0.4;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background-color: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-full);
            font-size: 0.825rem;
            font-weight: 500;
            color: #bfdbfe;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-badge span.pulse-dot {
            width: 8px;
            height: 8px;
            background-color: #22c55e;
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.3);
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
            color: #ffffff;
        }

        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.75;
            color: #cbd5e1;
            margin-bottom: 36px;
            max-width: 740px;
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 14px 30px;
            background-color: #2563eb;
            color: #ffffff;
            font-weight: 600;
            border-radius: var(--radius-md);
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background-color: #1d4ed8;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
        }

        .btn-video-play {
            padding: 13px 26px;
            background-color: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }

        .btn-video-play:hover {
            background-color: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-video-play svg {
            width: 18px;
            height: 18px;
            fill: #60a5fa;
        }

        /* 优惠券墙 */
        .coupon-wall-section {
            padding: 40px 0;
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
        }

        .coupon-wall-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .coupon-summary {
            max-width: 320px;
        }

        .coupon-summary h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .coupon-summary p {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .coupon-grid {
            display: flex;
            gap: 16px;
            flex: 1;
            justify-content: flex-end;
            flex-wrap: wrap;
        }

        .coupon-ticket {
            background: linear-gradient(135deg, #f0fdf4 0%, #e0f2fe 100%);
            border: 1px dashed #38bdf8;
            border-radius: var(--radius-md);
            padding: 12px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            position: relative;
        }

        .ticket-val {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .ticket-val span {
            font-size: 0.85rem;
            font-weight: 600;
        }

        .ticket-info h4 {
            font-size: 0.875rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .ticket-info p {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .btn-ticket {
            padding: 6px 14px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-ticket:hover {
            background-color: var(--primary-hover);
        }

        /* 保障图标条 */
        .trust-strip-section {
            background-color: #f1f5f9;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .trust-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .trust-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            flex-shrink: 0;
        }

        .trust-icon svg {
            width: 22px;
            height: 22px;
            fill: currentColor;
        }

        .trust-text h4 {
            font-size: 0.925rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .trust-text p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 通用板块 */
        .section-padding {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-kicker {
            display: inline-block;
            font-size: 0.825rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块1：全球覆盖 */
        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .coverage-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .coverage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-focus);
        }

        .card-icon-wrap {
            width: 52px;
            height: 52px;
            background-color: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .card-icon-wrap svg {
            width: 26px;
            height: 26px;
            fill: currentColor;
        }

        .coverage-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .coverage-card p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 20px;
        }

        .node-stat-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* 板块2：场景卡 */
        .scenarios-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .scenario-tag-strip {
            height: 6px;
            background: linear-gradient(90deg, #3b82f6, #60a5fa);
        }

        .scenario-body {
            padding: 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .scenario-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .scenario-body p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .scenario-meta {
            font-size: 0.775rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid #f1f5f9;
            padding-top: 12px;
        }

        /* 板块3：本地化能力 */
        .bg-light-blue {
            background-color: #f0f7ff;
        }

        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-split-content h2 {
            font-size: 2.15rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .feature-split-content p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .feature-points-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .feature-point-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .point-bullet {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: #dbeafe;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .point-bullet svg {
            width: 14px;
            height: 14px;
            fill: currentColor;
        }

        .point-info h4 {
            font-size: 0.975rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .point-info p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .feature-showcase-panel {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
            padding: 36px;
        }

        .showcase-stat-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 28px;
        }

        .stat-box {
            background-color: #f8fafc;
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.825rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .stream-status-indicator {
            background-color: #0f172a;
            color: #f8fafc;
            padding: 20px;
            border-radius: var(--radius-md);
            font-family: monospace;
            font-size: 0.85rem;
        }

        .stream-status-row {
            display: flex;
            justify-content: space-between;
            padding: 4px 0;
            border-bottom: 1px solid #1e293b;
        }

        .stream-status-row:last-child {
            border-bottom: none;
        }

        .status-badge-ok {
            color: #4ade80;
        }

        /* 板块4：多端互联 */
        .devices-matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .device-box {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .device-box .dev-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            background-color: #eff6ff;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .device-box .dev-icon svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .device-box h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .device-box p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 板块5：技术优势对比表 */
        .comparison-wrapper {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.925rem;
        }

        .comparison-table th {
            background-color: #f8fafc;
            font-weight: 700;
            color: var(--text-main);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .col-highlight {
            background-color: #f0f7ff;
            font-weight: 700;
            color: var(--primary);
        }

        /* 板块6：品牌叙事 */
        .brand-story-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            padding: 80px 0;
        }

        .brand-story-inner {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-story-inner h2 {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .brand-story-inner p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #cbd5e1;
            margin-bottom: 32px;
        }

        .story-metrics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .story-metric h3 {
            font-size: 2.25rem;
            font-weight: 800;
            color: #60a5fa;
            line-height: 1;
            margin-bottom: 8px;
        }

        .story-metric p {
            font-size: 0.875rem;
            color: #94a3b8;
            margin-bottom: 0;
        }

        /* 板块7：客户案例 */
        .case-studies-grid {
            display: grid;
            grid-template-columns: repeat(3;
            gap: 28px;
        }

        .case-card {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 32px 26px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-header {
            margin-bottom: 20px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            font-size: 0.775rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
        }

        .case-header h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
        }

        .case-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 24px;
        }

        .case-result-badge {
            background-color: #f8fafc;
            border-left: 3px solid var(--primary);
            padding: 10px 14px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-size: 0.825rem;
            font-weight: 600;
            color: var(--text-main);
        }

        /* 板块8：分类入口频道矩阵 */
        .category-channels-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .channel-portal-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
        }

        .channel-portal-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .channel-info h3 {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .channel-info p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 440px;
        }

        .channel-btn-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .channel-portal-card:hover .channel-btn-icon {
            background-color: var(--primary);
            color: #ffffff;
            transform: scale(1.08);
        }

        .channel-btn-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        /* 板块9：资讯列表 */
        .news-section-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }

        .posts-stream-wrapper {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .post-entry-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .post-entry-card:hover {
            border-color: var(--border-focus);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .post-header-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .post-cat-badge {
            background-color: #f1f5f9;
            color: var(--primary);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        .post-entry-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .post-entry-card:hover .post-entry-title {
            color: var(--primary);
        }

        .post-entry-excerpt {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
        }

        .post-readmore {
            font-size: 0.825rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            align-self: flex-start;
        }

        .news-sidebar-panel {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: fit-content;
        }

        .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .sidebar-item {
            padding-bottom: 16px;
            border-bottom: 1px dashed var(--border-color);
        }

        .sidebar-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-item-title {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.45;
            display: block;
            margin-bottom: 6px;
        }

        .sidebar-item-title:hover {
            color: var(--primary);
        }

        .sidebar-item-date {
            font-size: 0.775rem;
            color: var(--text-light);
        }

        .more-news-link {
            display: block;
            text-align: center;
            padding: 10px;
            margin-top: 20px;
            background-color: var(--bg-page);
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }

        .more-news-link:hover {
            background-color: var(--primary-light);
        }

        .empty-posts-notice {
            padding: 40px;
            text-align: center;
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* 板块10：安全保障体系 */
        .security-pillars-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pillar-card {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }

        .pillar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .pillar-card h3 span.badge-num {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }

        .pillar-card p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 板块11：标签云 */
        .tag-cloud-wrapper {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .topic-tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .topic-tag-chip:hover {
            background-color: var(--primary-light);
            border-color: var(--border-focus);
            color: var(--primary);
            transform: translateY(-1px);
        }

        /* 板块12：联系销售与行动转化 */
        .cta-action-band {
            background: linear-gradient(135deg, var(--primary) 0%, #1e3a8a 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #ffffff;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
            box-shadow: var(--shadow-xl);
        }

        .cta-info h2 {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-info p {
            font-size: 1rem;
            line-height: 1.7;
            color: #bfdbfe;
        }

        .cta-form-box {
            background-color: #ffffff;
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-lg);
        }

        .cta-form-box h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .form-group-stack {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .form-control-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition);
        }

        .form-control-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .btn-submit-action {
            width: 100%;
            padding: 12px;
            background-color: var(--primary);
            color: #ffffff;
            font-weight: 700;
            border-radius: var(--radius-sm);
            border: none;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-submit-action:hover {
            background-color: var(--primary-hover);
        }

        .form-terms-tip {
            font-size: 0.75rem;
            color: var(--text-light);
            text-align: center;
            margin-top: 8px;
        }

        /* 页脚 */
        .site-footer {
            background-color: #0b1120;
            color: #94a3b8;
            padding: 70px 0 30px;
            border-top: 1px solid #1e293b;
            font-size: 0.875rem;
        }

        .footer-top-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand-col h4 {
            color: #ffffff;
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand-col p {
            line-height: 1.7;
            margin-bottom: 20px;
            color: #64748b;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links-list a {
            color: #94a3b8;
        }

        .footer-links-list a:hover {
            color: #ffffff;
        }

        .footer-bottom-bar {
            padding-top: 30px;
            border-top: 1px solid #1e293b;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: #64748b;
        }

        .footer-tech-meta {
            display: flex;
            gap: 16px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .coverage-grid, .case-studies-grid, .security-pillars-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenarios-container, .devices-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-section-layout {
                grid-template-columns: 1fr;
            }
            .footer-top-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-action-band {
                grid-template-columns: 1fr;
                padding: 40px 30px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .search-box input {
                width: 140px;
            }
            .search-box input:focus {
                width: 160px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .feature-split {
                grid-template-columns: 1fr;
            }
            .category-channels-grid {
                grid-template-columns: 1fr;
            }
            .coupon-wall-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .coupon-grid {
                width: 100%;
                justify-content: flex-start;
            }
            .story-metrics-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .coverage-grid, .case-studies-grid, .security-pillars-grid, .scenarios-container, .devices-matrix-grid, .trust-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-video-play {
                width: 100%;
                justify-content: center;
            }
            .footer-top-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e40af;
            --primary-hover: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #2563eb;
            --accent-light: #dbeafe;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #94a3b8;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --border-focus: #93c5fd;
            --success: #10b981;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
        }

        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: var(--radius-full);
        }

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

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 190px;
            padding: 8px 14px 8px 34px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            background-color: #f1f5f9;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            width: 230px;
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .search-box svg {
            position: absolute;
            left: 11px;
            width: 15px;
            height: 15px;
            fill: none;
            stroke: var(--text-light);
            stroke-width: 2;
        }

        .btn-header {
            padding: 8px 18px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-header:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        /* 文章页主体结构 */
        .page-wrapper {
            padding: 40px 0 80px;
        }

        /* 英雄区 / 文章头部导航 */
        .article-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            color: #ffffff;
            margin-bottom: 36px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px);
            background-size: 24px 24px;
            opacity: 0.3;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 900px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: #94a3b8;
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: #cbd5e1;
        }

        .breadcrumb a:hover {
            color: #ffffff;
        }

        .breadcrumb span.sep {
            opacity: 0.5;
        }

        .article-badge-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .badge-tag {
            padding: 4px 12px;
            background-color: rgba(37, 99, 235, 0.4);
            border: 1px solid rgba(147, 197, 253, 0.4);
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 600;
            color: #dbeafe;
        }

        .badge-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: #6ee7b7;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background-color: #10b981;
            border-radius: 50%;
            box-shadow: 0 0 8px #10b981;
        }

        .article-title-h1 {
            font-size: 2.25rem;
            font-weight: 800;
            line-height: 1.35;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }

        .article-meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            font-size: 0.875rem;
            color: #cbd5e1;
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-item svg {
            width: 16px;
            height: 16px;
            stroke: #93c5fd;
            fill: none;
            stroke-width: 2;
        }

        /* 核心布局网格 */
        .article-layout-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 32px;
            align-items: start;
        }

        /* 主体内容区块 */
        .content-main-panel {
            background-color: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            padding: 40px;
        }

        .content-summary-card {
            background-color: var(--primary-light);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 20px 24px;
            margin-bottom: 32px;
        }

        .summary-label {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--primary);
            letter-spacing: 0.05em;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .summary-text {
            font-size: 1rem;
            line-height: 1.7;
            color: #1e293b;
        }

        /* CMS 正文渲染格式 */
        .article-body-render {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #334155;
        }

        .article-body-render h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f1f5f9;
        }

        .article-body-render h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1e293b;
            margin: 28px 0 12px;
        }

        .article-body-render p {
            margin-bottom: 20px;
        }

        .article-body-render ul, .article-body-render ol {
            margin: 16px 0 24px 24px;
            color: #475569;
        }

        .article-body-render li {
            margin-bottom: 8px;
        }

        .article-body-render img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .cms-not-found {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
        }

        .cms-not-found a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
        }

        /* 参数表板块（蓝图-产品详页） */
        .specs-section {
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid var(--border-color);
        }

        .section-subheading {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-subheading::before {
            content: '';
            width: 4px;
            height: 18px;
            background-color: var(--primary);
            border-radius: var(--radius-full);
        }

        .specs-table-wrap {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
        }

        .specs-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.925rem;
            text-align: left;
        }

        .specs-table th {
            background-color: #f8fafc;
            color: var(--text-muted);
            font-weight: 600;
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-color);
            width: 35%;
        }

        .specs-table td {
            padding: 14px 18px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-main);
            background-color: #ffffff;
        }

        .specs-table tr:last-child th,
        .specs-table tr:last-child td {
            border-bottom: none;
        }

        .val-badge {
            display: inline-block;
            padding: 2px 8px;
            background-color: #dbeafe;
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 0.825rem;
            font-weight: 600;
        }

        /* 轮播/多节点矩阵截图展示 */
        .topology-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 20px;
        }

        .node-thumb-card {
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: var(--transition);
        }

        .node-thumb-card:hover {
            border-color: var(--border-focus);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .node-header {
            display: flex;justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
        }

        .node-name {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
        }

        .node-ping {
            font-size: 0.8rem;
            color: var(--success);
            font-weight: 600;
        }

        .node-data {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 侧边栏 */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-widget {
            background-color: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .widget-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }

        .channel-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .channel-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 14px;
            border-radius: var(--radius-md);
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .channel-item:hover {
            background-color: var(--primary-light);
            border-color: var(--border-focus);
            color: var(--primary);
        }

        .channel-item svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
        }

        .side-post-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .side-post-item {
            display: block;
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
        }

        .side-post-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .side-post-title {
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .side-post-item:hover .side-post-title {
            color: var(--primary);
        }

        .side-post-date {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        /* 购买/下载加速条（蓝图-产品详页） */
        .download-action-bar {
            margin-top: 48px;
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            border-radius: var(--radius-lg);
            padding: 32px;
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: var(--shadow-lg);
        }

        .bar-info h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .bar-info p {
            font-size: 0.925rem;
            color: #94a3b8;
            max-width: 620px;
        }

        .bar-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-action-primary {
            padding: 12px 24px;
            background-color: var(--accent);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
            transition: var(--transition);
        }

        .btn-action-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
        }

        .btn-action-primary svg {
            width: 18px;
            height: 18px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
        }

        .btn-action-secondary {
            padding: 12px 20px;
            background-color: rgba(255, 255, 255, 0.1);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.95rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-action-secondary:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

        /* 底部保障条 */
        .guarantee-bar {
            margin-top: 36px;
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .guarantee-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .guarantee-icon svg {
            width: 22px;
            height: 22px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2;
        }

        .guarantee-text h4 {
            font-size: 0.925rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 2px;
        }

        .guarantee-text p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 统一页脚 */
        .site-footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 64px 0 24px;
            border-top: 1px solid #1e293b;
            margin-top: 40px;
        }

        .footer-top-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand-col h4 {
            color: #ffffff;
            font-size: 1.25rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links-list a {
            color: #94a3b8;
            font-size: 0.875rem;
        }

        .footer-links-list a:hover {
            color: #ffffff;
            padding-left: 4px;
        }

        .footer-bottom-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid #1e293b;
            font-size: 0.85rem;
        }

        .footer-tech-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            color: #64748b;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .article-layout-grid {
                grid-template-columns: 1fr;
            }

            .guarantee-bar {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-top-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .search-box {
                display: none;
            }

            .article-hero {
                padding: 32px 24px;
            }

            .article-title-h1 {
                font-size: 1.75rem;
            }

            .content-main-panel {
                padding: 24px;
            }

            .topology-grid {
                grid-template-columns: 1fr;
            }

            .download-action-bar {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }

            .bar-actions {
                width: 100%;
                flex-direction: column;
            }

            .btn-action-primary, .btn-action-secondary {
                width: 100%;
                justify-content: center;
            }

            .guarantee-bar {
                grid-template-columns: 1fr;
            }

            .footer-top-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom-bar {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1e40af;
            --primary-hover: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #2563eb;
            --accent-light: #dbeafe;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #94a3b8;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --border-focus: #93c5fd;
            --success: #10b981;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
        }

        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: var(--radius-full);
        }

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

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 190px;
            padding: 8px 14px 8px 34px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            background-color: #f1f5f9;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            width: 230px;
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .search-box svg {
            position: absolute;
            left: 11px;
            width: 15px;
            height: 15px;
            fill: var(--text-light);
        }

        .btn-header {
            padding: 8px 18px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-header:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        /* Hero 试用申请蓝图 */
        .hero-apply-section {
            padding: 72px 0 64px;
            background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
            border-bottom: 1px solid var(--border-color);
        }

        .hero-apply-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background-color: #dbeafe;
            color: var(--primary);
            font-size: 0.825rem;
            font-weight: 700;
            border-radius: var(--radius-full);
            margin-bottom: 20px;
            border: 1px solid #bfdbfe;
        }

        .badge-dot {
            width: 8px;
            height: 8px;
            background-color: var(--primary);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0% { transform: scale(0.9); opacity: 0.8; }
            50% { transform: scale(1.3); opacity: 1; }
            100% { transform: scale(0.9); opacity: 0.8; }
        }

        .hero-apply-title {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-apply-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-perks {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .perk-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: #ffffff;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .perk-icon {
            width: 28px;
            height: 28px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .perk-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 2px;
        }

        .perk-sub {
            font-size: 0.825rem;
            color: var(--text-muted);
        }

        /* 试用申请卡片 */
        .apply-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            box-shadow: var(--shadow-xl);
            position: relative;
        }

        .apply-card-badge {
            position: absolute;
            top: -12px;
            right: 28px;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
        }

        .apply-card-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .apply-card-subtitle {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .form-select, .form-input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            background-color: #f8fafc;
            color: var(--text-main);
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition);
        }

        .form-select:focus, .form-input:focus {
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .form-checkbox {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 0.825rem;
            color: var(--text-muted);
        }

        .form-checkbox input {
            margin-top: 3px;
        }

        .btn-apply-submit {
            width: 100%;
            padding: 13px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
            transition: var(--transition);
        }

        .btn-apply-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4);
        }

        /* 通用板块与排版 */
        .section-padding {
            padding: 80px 0;
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-kicker {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-summary {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 节点分布网格 */
        .node-matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .node-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .node-box:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-focus);
        }

        .node-status-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .node-city {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-main);
        }

        .node-live-tag {
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: var(--radius-full);
            background-color: #dcfce7;
            color: #15803d;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .node-live-tag::before {
            content: '';
            width: 6px;
            height: 6px;
            background-color: #16a34a;
            border-radius: 50%;
        }

        .node-specs {
            list-style: none;
            margin-bottom: 22px;
        }

        .node-specs li {
            font-size: 0.875rem;
            color: var(--text-muted);
            padding: 6px 0;
            display: flex;
            justify-content: space-between;
            border-bottom: 1px dashed var(--border-color);
        }

        .node-specs li span:last-child {
            font-weight: 600;
            color: var(--text-main);
        }

        .node-metric {
            background-color: #f1f5f9;
            padding: 12px;
            border-radius: var(--radius-sm);
            text-align: center;
        }

        .metric-val {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
        }

        .metric-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 核心技术架构 (横向非对称卡片) */
        .tech-split-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 50px;
        }

        .tech-split-row:nth-child(even) {
            direction: rtl;
        }

        .tech-split-row:nth-child(even) .tech-text-block {
            direction: ltr;
        }

        .tech-image-panel {
            background: linear-gradient(135deg, #1e293b, #0f172a);
            border-radius: var(--radius-lg);
            padding: 36px;
            color: #ffffff;
            box-shadow: var(--shadow-lg);
            border: 1px solid #334155;
            position: relative;
        }

        .tech-hud-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 12px;
        }

        .tech-hud-title {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: #94a3b8;
        }

        .tech-hud-status {
            font-size: 0.8rem;
            color: #38bdf8;
            font-family: monospace;
        }

        .tech-hud-content {
            font-family: monospace;
            font-size: 0.85rem;
            line-height: 1.8;
            color: #e2e8f0;
        }

        .tech-hud-content span.highlight {
            color: #60a5fa;
            font-weight: bold;
        }

        .tech-text-block h3 {
            font-size: 1.65rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .tech-text-block p {
            font-size: 0.975rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .tech-features-list {
            list-style: none;
        }

        .tech-features-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: var(--text-main);
            font-weight: 500;
        }

        .tech-features-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* 关键性能与保障指标数据面板 */
        .stats-banner {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 44px;
            box-shadow: var(--shadow-md);
            margin: 40px 0;
        }

        .stats-banner-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-col:not(:last-child) {
            border-right: 1px solid var(--border-color);
        }

        .stat-huge {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.03em;
        }

        .stat-unit {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--accent);
        }

        .stat-name {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;}

        .stat-detail {
            font-size: 0.825rem;
            color: var(--text-muted);
        }

        /* 资讯与最新发布板块 */
        .posts-section {
            background-color: #f1f5f9;
            padding: 80px 0;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .post-card {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-focus);
        }

        .post-meta-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }

        .post-tag {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-full);
        }

        .post-time {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .post-title-link {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-title-link:hover {
            color: var(--primary);
        }

        .post-excerpt {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }

        .post-more-link {
            font-size: 0.875rem;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .post-more-link:hover {
            color: var(--primary-hover);
            gap: 8px;
        }

        .empty-posts {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-color);
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 常见问题解答 */
        .faq-section {
            padding: 80px 0;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
        }

        .faq-q {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-q-icon {
            color: var(--primary);
            font-weight: 800;
        }

        .faq-a {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.75;
            padding-left: 24px;
        }

        /* 强转化 CTA 区域 */
        .cta-bottom-banner {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            color: #ffffff;
            text-align: center;
            box-shadow: var(--shadow-xl);
            margin-bottom: 80px;
            position: relative;
            overflow: hidden;
        }

        .cta-bottom-banner::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-subtitle {
            font-size: 1.05rem;
            color: #bfdbfe;
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-actions-row {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
        }

        .btn-cta-white {
            background-color: #ffffff;
            color: var(--primary);
            font-size: 1rem;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }

        .btn-cta-white:hover {
            transform: translateY(-2px);
            background-color: #f8fafc;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        .btn-cta-outline {
            background-color: transparent;
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            border: 1px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-cta-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
        }

        /* 页脚 */
        .site-footer {
            background-color: #0b1329;
            color: #94a3b8;
            padding: 64px 0 32px;
            border-top: 1px solid #1e293b;
        }

        .footer-top-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand-col h4 {
            font-size: 1.25rem;
            font-weight: 800;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-brand-col p {
            font-size: 0.875rem;
            line-height: 1.75;
            color: #64748b;
            max-width: 340px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #f1f5f9;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .footer-links-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links-list a {
            font-size: 0.875rem;
            color: #94a3b8;
        }

        .footer-links-list a:hover {
            color: #ffffff;
            padding-left: 4px;
        }

        .footer-bottom-bar {
            border-top: 1px solid #1e293b;
            padding-top: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.825rem;
            color: #64748b;
        }

        .footer-tech-meta {
            display: flex;
            gap: 20px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-apply-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .node-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-banner-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .stat-col:nth-child(2) {
                border-right: none;
            }
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .nav-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .hero-apply-section {
                padding: 44px 0;
            }
            .hero-apply-title {
                font-size: 1.85rem;
            }
            .hero-perks {
                grid-template-columns: 1fr;
            }
            .tech-split-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .tech-split-row:nth-child(even) {
                direction: ltr;
            }
            .node-matrix-grid {
                grid-template-columns: 1fr;
            }
            .stats-banner {
                padding: 28px 20px;
            }
            .stats-banner-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stat-col {
                border-right: none !important;
                border-bottom: 1px solid var(--border-color);
                padding-bottom: 16px;
            }
            .stat-col:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .posts-grid {
                grid-template-columns: 1fr;
            }
            .cta-bottom-banner {
                padding: 40px 24px;
            }
            .cta-title {
                font-size: 1.6rem;
            }
            .cta-actions-row {
                flex-direction: column;
                width: 100%;
            }
            .btn-cta-white, .btn-cta-outline {
                width: 100%;
            }
            .footer-top-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom-bar {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1e40af;
            --primary-hover: #1d4ed8;
            --primary-light: #eff6ff;
            --accent: #2563eb;
            --accent-light: #dbeafe;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-light: #94a3b8;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --border-focus: #93c5fd;
            --success: #10b981;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-full: 9999px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
        }

        .logo-icon svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 4px;
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: var(--radius-full);
        }

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

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 190px;
            padding: 8px 14px 8px 34px;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-full);
            background-color: #f1f5f9;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }

        .search-box input:focus {
            width: 230px;
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .search-box svg {
            position: absolute;
            left: 11px;
            width: 15px;
            height: 15px;
            fill: var(--text-light);
        }

        .btn-header {
            padding: 8px 18px;
            background-color: var(--primary);
            color: #ffffff;
            border-radius: var(--radius-full);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: none;
            cursor: pointer;
        }

        .btn-header:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        /* Hero: 白皮书获客蓝图 */
        .whitepaper-hero {
            padding: 72px 0 64px;
            background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
            border-bottom: 1px solid var(--border-color);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 56px;
            align-items: center;
        }

        .hero-badge-wrap {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: #dbeafe;
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .hero-badge-wrap span.dot {
            width: 8px;
            height: 8px;
            background-color: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }

        .whitepaper-hero h1 {
            font-size: 2.75rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }

        .hero-lead-desc {
            font-size: 1.125rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .doc-summary-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
        }

        .doc-summary-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .toc-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .toc-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .toc-item svg {
            width: 16px;
            height: 16px;
            fill: var(--accent);
            flex-shrink: 0;
        }

        /* 右侧白皮书封面与表单卡片 */
        .whitepaper-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-xl);
            overflow: hidden;
        }

        .whitepaper-cover-header {
            background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
            color: #ffffff;
            padding: 32px 28px;
            position: relative;
        }

        .cover-tag {
            font-size: 0.75rem;
            letter-spacing: 0.1em;
            background: rgba(255, 255, 255, 0.2);
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .cover-title {
            font-size: 1.35rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .cover-meta {
            font-size: 0.825rem;
            color: #bfdbfe;
            display: flex;
            gap: 16px;
        }

        .download-form {
            padding: 32px 28px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            background-color: #f8fafc;
            outline: none;
            transition: var(--transition);
        }

        .form-input:focus {
            background-color: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }

        .btn-submit-download {
            width: 100%;
            padding: 14px;
            background-color: var(--primary);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-submit-download:hover {
            background-color: var(--primary-hover);
            box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
        }

        .form-privacy-note {
            font-size: 0.775rem;
            color: var(--text-light);
            text-align: center;
            margin-top: 12px;
        }

        /* 通用板块规范 */
        .section-block {
            padding: 72px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header.text-center {
            text-align: center;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-tag {
            font-size: 0.825rem;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 8px;
            display: inline-block;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 核心特性矩阵（非三列标准卡片，2x2丰富卡） */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .feature-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
        }

        .feature-box:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-focus);
        }

        .feature-icon-wrapper {
            width: 52px;
            height: 52px;
            background-color: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .feature-icon-wrapper svg {
            width: 26px;
            height: 26px;
            fill: currentColor;
        }

        .feature-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .feature-content p {
            font-size: 0.925rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 编解码与传输双栏对比 */
        .codec-split-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: stretch;
        }

        .tech-detail-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .tech-detail-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tech-pill {
            font-size: 0.75rem;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-weight: 600;
        }

        .tech-list-points {
            list-style: none;
            margin: 20px 0;
        }

        .tech-list-points li {
            padding: 10px 0;
            border-bottom: 1px dashed var(--border-color);
            font-size: 0.925rem;
            color: var(--text-muted);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .tech-list-points li:last-child {
            border-bottom: none;
        }

        .bullet-point {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            margin-top: 8px;
            flex-shrink: 0;
        }

        /* 数据指标基准展台 */
        .benchmark-section {
            background: #ffffff;
        }

        .metrics-banner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .metric-stat-card {
            background: #f8fafc;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .metric-stat-card:hover {
            background: #ffffff;
            box-shadow: var(--shadow-md);
            border-color: var(--border-focus);
        }

        .metric-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .metric-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .metric-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 资讯与技术前沿动态列表 */
        .cms-list-wrap {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .cms-post-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .cms-post-item:hover {
            transform: translateY(-2px);
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
        }

        .cms-post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .cms-post-badge {
            background: #eff6ff;
            color: var(--primary);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        .cms-post-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .cms-post-excerpt {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .cms-post-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .cms-empty-state {
            grid-column: 1 / -1;
            background: #ffffff;
            border: 1px dashed var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* 常见架构与播放疑问 FAQ */
        .faq-accordion-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .faq-item-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .faq-q {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .faq-q-badge {
            width: 24px;
            height: 24px;
            background: var(--primary);
            color: #ffffff;
            font-size: 0.75rem;
            font-weight: 800;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-a {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            padding-left: 32px;
        }

        /* 强力保障条 */
        .guarantee-ribbon {
            background: linear-gradient(90deg, #1e40af, #2563eb);
            color: #ffffff;
            padding: 36px 0;
        }

        .guarantee-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .guarantee-info {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .guarantee-icon {
            width: 48px;
            height: 48px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .guarantee-icon svg {
            width: 24px;
            height: 24px;
            fill: #ffffff;
        }

        .guarantee-text h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 2px;
        }

        .guarantee-text p {
            font-size: 0.85rem;
            color: #dbeafe;
        }

        /* 底部 CTA 板块 */
        .cta-action-section {
            background: #ffffff;
            padding: 80px 0;
            text-align: center;
        }

        .cta-box-inner {
            max-width: 760px;
            margin: 0 auto;
            background: #eff6ff;
            border: 1px solid #bfdbfe;
            border-radius: var(--radius-lg);
            padding: 56px 36px;
        }

        .cta-box-inner h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .cta-box-inner p {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-button-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }

        .btn-cta-main {
            padding: 14px 32px;
            background-color: var(--primary);
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 700;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
            border: none;
            cursor: pointer;
        }

        .btn-cta-main:hover {
            background-color: var(--primary-hover);
        }

        .btn-cta-sub {
            padding: 14px 28px;
            background-color: #ffffff;
            color: var(--text-main);
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            border: 1px solid var(--border-color);
        }

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

        /* 统一页脚样式 */
        .site-footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 64px 0 32px;
            border-top: 1px solid #1e293b;
        }

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

        .footer-brand-col h4 {
            color: #ffffff;
            font-size: 1.15rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand-col p {
            font-size: 0.875rem;
            line-height: 1.7;
            color: #94a3b8;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .footer-links-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links-list a {
            font-size: 0.85rem;
            color: #94a3b8;
        }

        .footer-links-list a:hover {
            color: #ffffff;
            padding-left: 4px;
        }

        .footer-bottom-bar {
            border-top: 1px solid #1e293b;
            padding-top: 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #64748b;
        }

        .footer-tech-meta {
            display: flex;
            gap: 20px;
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-top-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .metrics-banner {
                grid-template-columns: repeat(2, 1fr);
            }
            .codec-split-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .cms-list-wrap {
                grid-template-columns: 1fr;
            }
            .faq-accordion-grid {
                grid-template-columns: 1fr;
            }
            .whitepaper-hero h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.65rem;
            }
            .metrics-banner {
                grid-template-columns: 1fr;
            }
            .cta-button-group {
                flex-direction: column;
                width: 100%;
            }
            .btn-cta-main, .btn-cta-sub {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .footer-top-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom-bar {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .toc-list {
                grid-template-columns: 1fr;
            }
        }