/* roulang page: index */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --primary-light: #e0f2fe;
            --secondary: #0f172a;
            --accent: #f97316;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Top Promotion Bar */
        .top-promo-bar {
            background-color: var(--secondary);
            color: #94a3b8;
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

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

        .promo-tag {
            background-color: var(--accent);
            color: #ffffff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            margin-right: 8px;
        }

        .promo-links {
            display: flex;
            gap: 16px;
        }

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

        /* Main Navigation */
        .site-header {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }

        .brand-badge {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #ffffff;
            font-size: 11px;
            padding: 3px 6px;
            border-radius: var(--radius-sm);
            vertical-align: middle;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            align-items: center;
        }

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 4px;
            position: relative;
        }

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

        .nav-menu a.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

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

        .nav-search {
            position: relative;
        }

        .nav-search input {
            padding: 8px 12px 8px 32px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            outline: none;
            width: 170px;
            transition: all 0.2s ease;
            background-color: #f8fafc;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            width: 210px;
            background-color: #fff;
        }

        .nav-search svg {
            position: absolute;
            left: 10px;
            top: 50%;
            transform: translateY(-50%);
            fill: #94a3b8;
            width: 14px;
            height: 14px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            border: none;
            cursor: pointer;
            transition: background-color 0.2s ease, transform 0.1s ease;
        }

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

        .btn-secondary {
            background-color: #ffffff;
            color: var(--secondary);
            border: 1px solid var(--border-color);
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            transition: all 0.2s ease;
        }

        .btn-secondary:hover {
            border-color: var(--text-main);
            background-color: #f8fafc;
        }

        /* Mobile Hamburger */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--secondary);
            margin: 4px 0;
            border-radius: 2px;
        }

        /* Section Layout Common */
        .page-section {
            padding: 72px 0;
        }

        .section-alt {
            background-color: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .section-dark {
            background-color: var(--secondary);
            color: #ffffff;
        }

        .section-header {
            margin-bottom: 44px;
            max-width: 800px;
        }

        .section-header.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .section-kicker {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .section-dark .section-kicker {
            background-color: rgba(2, 132, 199, 0.2);
            color: #38bdf8;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: inherit;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: #94a3b8;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.9)), url('/assets/images/404c086c4b3e8a70.webp') center/cover no-repeat;
            color: #ffffff;
            padding: 84px 0 96px;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-intro {
            font-size: 16px;
            color: #cbd5e1;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .hero-stats-row {
            display: flex;
            gap: 28px;
            margin-bottom: 34px;
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 24px;
        }

        .hero-stat-item strong {
            display: block;
            font-size: 24px;
            font-weight: 700;
            color: #38bdf8;
        }

        .hero-stat-item span {
            font-size: 13px;
            color: #94a3b8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Booking / Node Dispatch Console Box */
        .dispatch-card {
            background-color: #ffffff;
            color: var(--text-main);
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3);
            border: 1px solid rgba(255,255,255,0.2);
        }

        .dispatch-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .status-dot {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            color: #16a34a;
            font-weight: 500;
        }

        .status-dot::before {
            content: "";
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: #16a34a;
            border-radius: 50%;
            margin-right: 6px;
            box-shadow: 0 0 0 3px rgba(22,163,74,0.2);
        }

        .dispatch-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .form-group select,
        .form-group input {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-main);
            background-color: #f8fafc;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-group select:focus,
        .form-group input:focus {
            border-color: var(--primary);
            background-color: #fff;
        }

        .form-hint {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        .dispatch-submit-btn {
            width: 100%;
            padding: 12px;
            background-color: var(--primary);
            color: #ffffff;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-sm);
            font-size: 15px;
            cursor: pointer;
            transition: background 0.2s;
            margin-top: 8px;
        }

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

        /* Section 1: Node Matrix */
        .node-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .node-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .node-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: #cbd5e1;
        }

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

        .node-code {
            font-size: 12px;
            font-family: monospace;
            background-color: #f1f5f9;
            padding: 2px 6px;
            border-radius: 4px;
            color: var(--secondary);
            font-weight: 600;
        }

        .node-ping {
            font-size: 12px;
            color: #16a34a;
            font-weight: 600;
        }

        .node-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .node-info {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Section 2: Specification Outline */
        .outline-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .outline-item {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: grid;
            grid-template-columns: 140px 1fr auto;
            align-items: center;
            gap: 24px;
        }

        .outline-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
        }

        .outline-title-block h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .outline-title-block p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .outline-tag {
            font-size: 12px;
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            padding: 6px 12px;
            border-radius: 20px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Section 3: High Contrast Triple Selling Points */
        .triplet-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .triplet-card {
            background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .triplet-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), #38bdf8);
        }

        .triplet-icon {
            width: 48px;
            height: 48px;
            background-color: rgba(2, 132, 199, 0.15);
            border-radius: var(--radius-md);
            display: flex;
align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: #38bdf8;
            font-size: 22px;
            font-weight: 700;
        }

        .triplet-title {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #ffffff;
        }

        .triplet-desc {
            font-size: 14px;
            color: #94a3b8;
            line-height: 1.7;
        }

        /* Section 4: Architecture Stage */
        .stage-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .stage-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .stage-details {
            padding: 40px;
        }

        .stage-details h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--secondary);
        }

        .stage-details p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .stage-specs {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .spec-item {
            background-color: #f8fafc;
            border: 1px solid var(--border-color);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
        }

        .spec-item strong {
            display: block;
            font-size: 14px;
            color: var(--secondary);
        }

        .spec-item span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Section 5: Scenario Matrix */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        .scenario-thumb {
            height: 190px;
            overflow: hidden;
        }

        .scenario-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .scenario-card:hover .scenario-thumb img {
            transform: scale(1.04);
        }

        .scenario-body {
            padding: 24px;
        }

        .scenario-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }

        .scenario-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Section 6: Analytics & KPI Dashboard */
        .analytics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .kpi-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px;
            text-align: center;
        }

        .kpi-val {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1.1;
        }

        .kpi-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 6px;
        }

        .kpi-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Section 7: Quick Setup / Tool config */
        .config-box {
            background-color: #0f172a;
            border-radius: var(--radius-lg);
            padding: 36px;
            color: #e2e8f0;
            border: 1px solid rgba(255,255,255,0.08);
        }

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

        .config-step {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .config-step-num {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: #38bdf8;
            background: rgba(56, 189, 248, 0.15);
            padding: 2px 8px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .config-step h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .config-step pre {
            background: rgba(0,0,0,0.3);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-family: monospace;
            color: #7dd3fc;
            overflow-x: auto;
            margin-top: 10px;
        }

        /* Section 8: Channel matrix & Category Entry Wall */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .channel-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            text-align: center;
            transition: all 0.2s ease;
        }

        .channel-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .channel-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .channel-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .channel-card .channel-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Section 9: Plan Comparison */
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .plan-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .plan-card.featured {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: scale(1.02);
        }

        .plan-featured-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary);
            color: #ffffff;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            text-transform: uppercase;
        }

        .plan-type {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }

        .plan-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .plan-metrics {
            margin-bottom: 24px;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
            list-style: none;
        }

        .plan-metrics li {
            font-size: 13px;
            color: var(--text-main);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .plan-metrics li::before {
            content: "✓";
            color: var(--primary);
            font-weight: 700;
        }

        /* Section 10: Feedback / Social Proof Wall */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .review-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }

        .review-meta h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
        }

        .review-meta span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.7;
        }

        /* Section 11: News / Updates list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .news-img {
            height: 160px;
        }

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

        .news-body {
            padding: 20px;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }

        .news-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

        /* Section 12: Accessibility and Compliance bar */
        .access-bar {
            background-color: #f1f5f9;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .access-icon {
            font-size: 24px;
            color: var(--primary);
        }

        .access-text h5 {
            font-size: 15px;
            font-weight: 700;
            color: var(--secondary);
        }

        .access-text p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Section 13: Final Activation CTA */
        .activation-card {
            background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            color: #ffffff;
            box-shadow: var(--shadow-lg);
        }

        .activation-card h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .activation-card p {
            max-width: 680px;
            margin: 0 auto 30px;
            font-size: 15px;
            color: #cbd5e1;
            line-height: 1.8;
        }

        /* Footer */
        .site-footer {
            background-color: #0b1120;
            color: #94a3b8;
            padding: 64px 0 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 320px;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .node-grid,
            .channel-grid,
            .analytics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .outline-item {
                grid-template-columns: 100px 1fr;
            }
            .outline-tag {
                grid-column: span 2;
                justify-self: start;
            }
            .stage-box {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .page-section {
                padding: 48px 0;
            }
            .triplet-grid,
            .scenario-grid,
            .plan-grid,
            .review-grid,
            .news-grid,
            .config-steps {
                grid-template-columns: 1fr;
            }
            .nav-menu,
            .nav-tools .nav-search {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .plan-card.featured {
                transform: none;
            }
            .access-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .node-grid,
            .channel-grid,
            .analytics-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats-row {
                flex-direction: column;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stage-specs {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --secondary: #0f172a;
      --accent: #f97316;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      color: var(--secondary);
      letter-spacing: -0.5px;
    }
    .brand-badge {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #ffffff;
      font-size: 11px;
      padding: 3px 6px;
      border-radius: var(--radius-sm);
      vertical-align: middle;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 4px;
      position: relative;
    }
    .nav-menu a:hover,
    .nav-menu a.active {
      color: var(--primary);
    }
    .nav-menu a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-tools {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .nav-search {
      position: relative;
    }
    .nav-search input {
      padding: 8px 12px 8px 32px;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 13px;
      outline: none;
      width: 170px;
      transition: all 0.2s ease;
      background-color: #f8fafc;
    }
    .nav-search input:focus {
      border-color: var(--primary);
      width: 210px;
      background-color: #fff;
    }
    .nav-search svg {
      position: absolute;
      left: 10px;
      top: 50%;
      transform: translateY(-50%);
      fill: #94a3b8;
      width: 14px;
      height: 14px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      padding: 9px 20px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      display: inline-block;
      border: none;
      cursor: pointer;
      transition: background-color 0.2s ease, transform 0.1s ease;
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
    }
    .btn-secondary {
      background-color: #ffffff;
      color: var(--secondary);
      border: 1px solid var(--border-color);
      padding: 9px 20px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      display: inline-block;
      transition: all 0.2s ease;
    }
    .btn-secondary:hover {
      border-color: var(--text-main);
      background-color: #f8fafc;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .mobile-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--secondary);
      margin: 4px 0;
      border-radius: 2px;
    }
    .page-section {
      padding: 64px 0;
    }
    .section-alt {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background-color: var(--secondary);
      color: #ffffff;
    }
    .section-header {
      margin-bottom: 40px;
      max-width: 840px;
    }
    .section-header.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-kicker {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .section-dark .section-kicker {
      color: #38bdf8;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--secondary);
      margin-bottom: 12px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94a3b8;
    }

    /* Page Hero */
    .page-hero {
      background: linear-gradient(180deg, #f0f9ff 0%, #f8fafc 100%);
      padding: 56px 0 44px;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }
    .hero-badge-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #e0f2fe;
      color: #0369a1;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .hero-title {
      font-size: 36px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--secondary);
      margin-bottom: 18px;
    }
    .hero-summary {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.8;
    }
    .spec-quick-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .quick-stat-val {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
    }
    .quick-stat-lbl {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Spec Matrix Table */
    .spec-table-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .spec-table th {
      background: #f1f5f9;
      color: var(--secondary);
      font-size: 14px;
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .spec-table td {
      padding: 16px 20px;
      font-size: 14px;
      border-bottom: 1px solid var(--border-color);
      color: var(--text-main);
    }
    .spec-table tr:last-child td {
      border-bottom: none;
    }
    .spec-tag {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 600;
      background: #e2e8f0;
      color: #334155;
    }
    .spec-tag.active {
      background: #dcfce7;
      color: #15803d;
    }

    /* Cards Grid */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .cards-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .feature-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .feature-card-dark {
      background: #1e293b;
      border: 1px solid #334155;
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 10px;
    }
    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .card-meta-list {
      margin-top: 16px;
      list-style: none;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .card-meta-list li {
      font-size: 13px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 6px;
    }
    .card-meta-list li::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
    }

    /* Terminal Preview Box */
    .terminal-window {
      background: #0f172a;
      border: 1px solid #334155;
      border-radius: var(--radius-md);
      overflow: hidden;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .terminal-bar {
      background: #1e293b;
      padding: 10px 16px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid #334155;
    }
    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      display: inline-block;
    }
    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }
    .terminal-body {
      padding: 20px;
      color: #e2e8f0;
      font-size: 13px;
      line-height: 1.7;
    }
    .terminal-body .cmd { color: #38bdf8; }
    .terminal-body .comment { color: #64748b; }
    .terminal-body .success { color: #4ade80; }

    /* Comparison Split */
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .spec-bullet-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .spec-bullet-item {
      display: flex;
      gap: 14px;
      align-items: flex-start;
    }
    .spec-bullet-num {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 13px;
      margin-top: 2px;
    }
    .spec-bullet-content h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 4px;
    }
    .spec-bullet-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* CTA Section */
    .cta-banner {
      background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
      color: #ffffff;
      padding: 56px 40px;
      border-radius: var(--radius-lg);
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-banner h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .cta-banner p {
      color: #e0f2fe;
      font-size: 15px;
      max-width: 620px;
      line-height: 1.7;
    }
    .cta-actions {
      display: flex;
      gap: 14px;
      flex-shrink: 0;
    }
    .btn-light {
      background: #ffffff;
      color: var(--primary-dark);
      padding: 12px 24px;
      border-radius: var(--radius-md);
      font-weight: 700;
      font-size: 14px;
      transition: all 0.2s ease;
    }
    .btn-light:hover {
      background: #f8fafc;
      transform: translateY(-2px);
    }
    .btn-outline-white {
      background: transparent;
      color: #ffffff;
      border: 1px solid rgba(255,255,255,0.4);
      padding: 12px 24px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 14px;
      transition: all 0.2s ease;
    }
    .btn-outline-white:hover {
      background: rgba(255,255,255,0.1);
      border-color: #ffffff;
    }

    /* Site Footer */
    .site-footer {
      background-color: #0b1120;
      color: #94a3b8;
      padding: 64px 0 32px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 16px;
      max-width: 320px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: #94a3b8;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748b;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .split-layout {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-search, .nav-tools .btn-primary {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .cta-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
      }
      .cards-grid-3, .cards-grid-2 {
        grid-template-columns: 1fr;
      }
      .spec-quick-bar {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }

/* roulang page: category1 */
:root {
        --primary: #0284c7;
        --primary-dark: #0369a1;
        --primary-light: #e0f2fe;
        --secondary: #0f172a;
        --accent: #f97316;
        --accent-hover: #ea580c;
        --text-main: #1e293b;
        --text-muted: #64748b;
        --bg-page: #f8fafc;
        --bg-card: #ffffff;
        --border-color: #e2e8f0;
        --success: #10b981;
        --success-bg: #ecfdf5;
        --warning: #f59e0b;
        --radius-sm: 6px;
        --radius-md: 10px;
        --radius-lg: 16px;
        --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
        --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
        --container-max: 1200px;
    }

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

    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease, border-color 0.2s ease;
    }

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

    .container {
        width: 100%;
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 20px;
    }

    /* Header & Nav */
    .site-header {
        background-color: #ffffff;
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: var(--shadow-sm);
    }

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

    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: var(--secondary);
        letter-spacing: -0.5px;
    }

    .brand-badge {
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #ffffff;
        font-size: 11px;
        padding: 3px 6px;
        border-radius: var(--radius-sm);
        vertical-align: middle;
    }

    .nav-menu {
        display: flex;
        list-style: none;
        gap: 24px;
        align-items: center;
    }

    .nav-menu a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-main);
        padding: 8px 4px;
        position: relative;
    }

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

    .nav-menu a.active::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 2px;
        background-color: var(--primary);
        border-radius: 2px;
    }

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

    .nav-search {
        position: relative;
    }

    .nav-search input {
        padding: 8px 12px 8px 32px;
        border: 1px solid var(--border-color);
        border-radius: 20px;
        font-size: 13px;
        outline: none;
        width: 170px;
        transition: all 0.2s ease;
        background-color: #f8fafc;
    }

    .nav-search input:focus {
        border-color: var(--primary);
        width: 210px;
        background-color: #fff;
    }

    .nav-search svg {
        position: absolute;
        left: 10px;
        top: 50%;
        transform: translateY(-50%);
        fill: #94a3b8;
        width: 14px;
        height: 14px;
    }

    .btn-primary {
        background-color: var(--primary);
        color: #ffffff;
        padding: 9px 20px;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 600;
        display: inline-block;
        border: none;
        cursor: pointer;
        transition: background-color 0.2s ease, transform 0.1s ease;
    }

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

    .btn-secondary {
        background-color: #ffffff;
        color: var(--secondary);
        border: 1px solid var(--border-color);
        padding: 9px 20px;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 600;
        display: inline-block;
        transition: all 0.2s ease;
    }

    .btn-secondary:hover {
        border-color: var(--text-main);
        background-color: #f8fafc;
    }

    .btn-accent {
        background-color: var(--accent);
        color: #ffffff;
        padding: 12px 28px;
        border-radius: var(--radius-md);
        font-size: 15px;
        font-weight: 600;
        display: inline-block;
        border: none;
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
        transition: all 0.2s ease;
    }

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

    .mobile-toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
    }

    .mobile-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background-color: var(--secondary);
        margin: 4px 0;
        border-radius: 2px;
    }

    /* Section Layouts */
    .page-section {
        padding: 72px 0;
    }

    .section-alt {
        background-color: #ffffff;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }

    .section-dark {
        background-color: var(--secondary);
        color: #ffffff;
    }

    .section-header {
        margin-bottom: 44px;
        max-width: 780px;
    }

    .section-header.center {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
    }

    .section-kicker {
        display: inline-block;
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1px;
        color: var(--primary);
        background: var(--primary-light);
        padding: 4px 10px;
        border-radius: 20px;
        margin-bottom: 12px;
    }

    .section-kicker.accent {
        color: var(--accent);
        background: #fff7ed;
    }

    .section-title {
        font-size: 30px;
        font-weight: 800;
        letter-spacing: -0.5px;
        margin-bottom: 12px;
        color: var(--secondary);
    }

    .section-dark .section-title {
        color: #ffffff;
    }

    .section-desc {
        font-size: 15px;
        color: var(--text-muted);
        line-height: 1.7;
    }

    .section-dark .section-desc {
        color: #94a3b8;
    }

    /* Category Hero Promo Banner */
    .cat-hero {
        position: relative;
        background: linear-gradient(135deg, #091326 0%, #0f1f3d 100%);
        color: #ffffff;
        padding: 70px 0 60px;
        overflow: hidden;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .cat-hero-bg {
        position: absolute;
        inset: 0;
        opacity: 0.18;
        background-image: url('/assets/images/404c086c4b3e8a70.webp');
        background-size: cover;
        background-position: center;
        pointer-events: none;
    }

    .cat-hero-grid {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 40px;
        align-items: center;
        position: relative;
        z-index: 1;
    }

    .blast-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: linear-gradient(90deg, #f97316, #ef4444);
        color: #fff;
        padding: 4px 12px;
        font-size: 12px;
        font-weight: 700;
        border-radius: 30px;
        margin-bottom: 16px;
        box-shadow: 0 0 16px rgba(249, 115, 22, 0.4);
    }

    .cat-hero h1 {
        font-size: 38px;
        font-weight: 900;
        line-height: 1.25;
        letter-spacing: -0.5px;
        margin-bottom: 18px;
    }

    .cat-hero-lead {
        font-size: 16px;
        color: #cbd5e1;
        margin-bottom: 24px;
        line-height: 1.7;
    }

    .cat-hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        margin-bottom: 28px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .cat-stat-num {
        font-size: 26px;
        font-weight: 800;
        color: #38bdf8;
    }

    .cat-stat-label {
        font-size: 12px;
        color: #94a3b8;
    }

    .cat-hero-actions {
        display: flex;
        gap: 14px;
        align-items: center;
        flex-wrap: wrap;
    }

    .cat-hero-card {
        background: rgba(30, 41, 59, 0.8);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius-lg);
        padding: 24px;
        backdrop-filter: blur(10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }

    .radar-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 16px;
        font-size: 14px;
        font-weight: 600;
        color: #e2e8f0;
    }

    .pulse-status {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        color: #10b981;
    }

    .pulse-dot {
        width: 8px;
        height: 8px;
        background-color: #10b981;
        border-radius: 50%;
        box-shadow: 0 0 8px #10b981;
        animation: pulse 1.5s infinite;
    }

    @keyframes pulse {
        0%, 100% { transform: scale(1); opacity: 1; }
        50% { transform: scale(1.3); opacity: 0.7; }
    }

    .matrix-live-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .matrix-item {
        background: rgba(15, 23, 42, 0.6);
        padding: 10px 14px;
        border-radius: var(--radius-sm);
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 13px;
        border-left: 3px solid var(--primary);
    }

    .matrix-ping {
        color: #38bdf8;
        font-family: monospace;
        font-weight: 600;
    }

    /* Grid & Cards */
    .grid-3 {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .grid-2 {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .grid-4 {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;

    }

    .node-card {
        background-color: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 24px;
        transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
        position: relative;
        overflow: hidden;
    }

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

    .node-card-badge {
        position: absolute;
        top: 16px;
        right: 16px;
        font-size: 11px;
        font-weight: 700;
        padding: 3px 8px;
        border-radius: 4px;
    }

    .badge-live {
        background-color: var(--success-bg);
        color: var(--success);
        border: 1px solid rgba(16, 185, 129, 0.2);
    }

    .badge-optimal {
        background-color: var(--primary-light);
        color: var(--primary-dark);
        border: 1px solid rgba(2, 132, 199, 0.2);
    }

    .node-card-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--secondary);
        margin-bottom: 8px;
    }

    .node-ip-preview {
        font-family: monospace;
        font-size: 12px;
        color: var(--text-muted);
        background: #f1f5f9;
        padding: 4px 8px;
        border-radius: var(--radius-sm);
        display: inline-block;
        margin-bottom: 14px;
    }

    .node-metrics {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        padding-top: 14px;
        border-top: 1px dashed var(--border-color);
        margin-bottom: 16px;
    }

    .metric-title {
        font-size: 12px;
        color: var(--text-muted);
    }

    .metric-value {
        font-size: 14px;
        font-weight: 700;
        color: var(--text-main);
    }

    .node-card p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 16px;
    }

    .feature-box {
        display: flex;
        gap: 16px;
        padding: 24px;
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
    }

    .feature-box:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-md);
    }

    .feature-icon-wrapper {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-md);
        background: var(--primary-light);
        color: var(--primary);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .feature-icon-wrapper svg {
        width: 24px;
        height: 24px;
        fill: currentColor;
    }

    .feature-box h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 6px;
        color: var(--secondary);
    }

    .feature-box p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
    }

    .tech-panel {
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }

    .tech-panel-content {
        padding: 36px;
    }

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

    .status-table-wrapper {
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow-x: auto;
    }

    .status-table {
        width: 100%;
        border-collapse: collapse;
        text-align: left;
        font-size: 13px;
    }

    .status-table th {
        background-color: #f8fafc;
        color: var(--secondary);
        font-weight: 700;
        padding: 14px 20px;
        border-bottom: 1px solid var(--border-color);
    }

    .status-table td {
        padding: 14px 20px;
        border-bottom: 1px solid var(--border-color);
        color: var(--text-main);
    }

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

    .status-table tr:hover td {
        background-color: #f1f5f9;
    }

    .tag-green {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        color: #059669;
        font-weight: 600;
        font-size: 12px;
    }

    .flow-steps {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        position: relative;
    }

    .flow-step-item {
        background: #ffffff;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 24px;
        position: relative;
    }

    .flow-number {
        width: 32px;
        height: 32px;
        background: var(--primary);
        color: #ffffff;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 14px;
        margin-bottom: 14px;
    }

    .flow-step-item h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 8px;
        color: var(--secondary);
    }

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

    .cta-banner {
        background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
        border-radius: var(--radius-lg);
        padding: 48px;
        color: #ffffff;
        text-align: center;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }

    .cta-banner h3 {
        font-size: 28px;
        font-weight: 800;
        margin-bottom: 14px;
    }

    .cta-banner p {
        font-size: 15px;
        color: #e0f2fe;
        max-width: 640px;
        margin: 0 auto 28px;
        line-height: 1.7;
    }

    .cta-actions {
        display: flex;
        justify-content: center;
        gap: 16px;
    }

    .btn-light {
        background-color: #ffffff;
        color: var(--primary-dark);
        padding: 12px 28px;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 700;
        display: inline-block;
        transition: all 0.2s ease;
    }

    .btn-light:hover {
        background-color: #f0f9ff;
        transform: translateY(-2px);
    }

    .btn-border-light {
        background-color: transparent;
        color: #ffffff;
        border: 1px solid rgba(255, 255, 255, 0.4);
        padding: 12px 28px;
        border-radius: var(--radius-md);
        font-size: 14px;
        font-weight: 700;
        display: inline-block;
        transition: all 0.2s ease;
    }

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

    /* Footer Styles */
    .site-footer {
        background-color: var(--secondary);
        color: #cbd5e1;
        padding: 64px 0 32px;
        border-top: 1px solid #1e293b;
        font-size: 14px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 48px;
    }

    .footer-brand h4 {
        color: #ffffff;
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 14px;
    }

    .footer-brand p {
        color: #94a3b8;
        line-height: 1.7;
        margin-bottom: 16px;
        font-size: 13px;
        max-width: 380px;
    }

    .footer-col h5 {
        color: #ffffff;
        font-size: 15px;
        font-weight: 600;
        margin-bottom: 18px;
    }

    .footer-links {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer-links a {
        color: #94a3b8;
        font-size: 13px;
        transition: color 0.2s ease;
    }

    .footer-links a:hover {
        color: #38bdf8;
    }

    .footer-bottom {
        padding-top: 28px;
        border-top: 1px solid #1e293b;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #64748b;
        font-size: 12px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .cat-hero-grid {
            grid-template-columns: 1fr;
        }
        .grid-4 {
            grid-template-columns: repeat(2, 1fr);
        }
        .flow-steps {
            grid-template-columns: repeat(2, 1fr);
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 768px) {
        .nav-menu {
            display: none;
        }
        .nav-search {
            display: none;
        }
        .mobile-toggle {
            display: block;
        }
        .grid-3, .grid-2 {
            grid-template-columns: 1fr;
        }
        .grid-4 {
            grid-template-columns: 1fr;
        }
        .flow-steps {
            grid-template-columns: 1fr;
        }
        .cat-hero h1 {
            font-size: 28px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
        }
        .footer-bottom {
            flex-direction: column;
            gap: 10px;
            text-align: center;
        }
        .cta-banner {
            padding: 32px 20px;
        }
        .cta-actions {
            flex-direction: column;
        }
    }

/* roulang page: index */
:root {
            --primary: #0f4c81;
            --primary-hover: #0b375d;
            --accent: #ff6b35;
            --accent-light: #fff3ec;
            --dark: #1e293b;
            --darker: #0f172a;
            --text-main: #334155;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --card-shadow: 0 10px 25px -5px rgba(15, 76, 129, 0.08), 0 8px 10px -6px rgba(15, 76, 129, 0.04);
            --radius-md: 10px;
            --radius-lg: 16px;
            --container-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部促销公告条 */
        .top-promo-bar {
            background: linear-gradient(90deg, #0b375d 0%, #0f4c81 50%, #ff6b35 100%);
            color: #ffffff;
            font-size: 13px;
            padding: 8px 0;
        }
        .top-promo-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .promo-tag {
            background-color: rgba(255, 255, 255, 0.2);
            padding: 2px 8px;
            border-radius: 4px;
            margin-right: 8px;
            font-weight: 600;
        }
        .promo-links a {
            color: #ffffff;
            opacity: 0.9;
            margin-left: 16px;
        }
        .promo-links a:hover {
            opacity: 1;
            text-decoration: underline;
        }

        /* 主导航条 */
        .site-header {
            background: #ffffff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .main-nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            letter-spacing: -0.5px;
        }
        .site-logo span {
            color: var(--accent);
            margin-left: 2px;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
        }
        .nav-item a {
            font-weight: 500;
            font-size: 15px;
            color: var(--dark);
            padding: 8px 4px;
            position: relative;
        }
        .nav-item.active a, .nav-item a:hover {
            color: var(--primary);
        }
        .nav-item.active a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search {
            position: relative;
        }
        .nav-search input {
            padding: 8px 14px;
            padding-right: 32px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            background-color: var(--bg-light);
            outline: none;
            width: 160px;
            transition: width 0.3s;
        }
        .nav-search input:focus {
            width: 200px;
            border-color: var(--primary);
            background-color: #fff;
        }
        .nav-btn {
            background-color: var(--primary);
            color: #fff;
            padding: 9px 20px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
        }
        .nav-btn:hover {
            background-color: var(--primary-hover);
        }

        /* Hero 预约到店 / 接入时段视觉 */
        .section-hero {
            position: relative;
            background-color: #0f172a;
            color: #fff;
            padding: 80px 0;
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.92)), url('/assets/images/404c086c4b3e8a70.webp');
            background-size: cover;
            background-position: center;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 50px;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            background-color: rgba(255, 107, 53, 0.2);
            color: #ff9166;
            border: 1px solid rgba(255, 107, 53, 0.35);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 800;
            margin-bottom: 20px;
            color: #ffffff;
        }
        .hero-desc {
            font-size: 15px;
            line-height: 1.8;
            color: #cbd5e1;
            margin-bottom: 30px;
        }
        .hero-meta-points {
            display: flex;
            gap: 24px;
            margin-bottom: 30px;
        }
        .meta-point-item strong {
            display: block;
            font-size: 24px;
            color: var(--accent);
            font-weight: 700;
        }
        .meta-point-item span {
            font-size: 13px;
            color: #94a3b8;
        }
        .hero-panel-box {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 30px;
        }
        .panel-header {
            margin-bottom: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 14px;
        }
        .panel-header h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .panel-header p {
            font-size: 13px;
            color: #94a3b8;
        }
        .timeslot-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 20px;
        }
        .slot-pill {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s;
        }
        .slot-pill.active {
            background-color: var(--accent);
            border-color: var(--accent);
            color: #fff;
            font-weight: 600;
        }
        .hero-cta-btn {
            display: block;
            width: 100%;
            background: var(--accent);
            color: #fff;
            text-align: center;
            padding: 14px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.35);
        }
        .hero-cta-btn:hover {
            background: #e55a28;
        }

        /* 通用 Section 排版 */
        .page-section {
            padding: 70px 0;
        }
        .bg-white {
            background-color: #ffffff;
        }
        .bg-alt {
            background-color: #f1f5f9;
        }
        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 50px auto;
        }
        .section-badge {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--darker);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .section-lead {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 矩阵卡片网格 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .matrix-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all 0.3s;
        }
        .matrix-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow);
            border-color: var(--primary);
        }
        .matrix-status {
            font-size: 12px;
            color: #10b981;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 10px;
        }
        .matrix-status::before {
            content: '';
            width: 7px;
            height: 7px;
            background: #10b981;
            border-radius: 50%;
            display: inline-block;
        }
        .matrix-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .matrix-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .matrix-spec {
            font-size: 12px;
            color: var(--primary);
            background: var(--bg-light);
            padding: 6px 10px;
            border-radius: 6px;
            display: flex;
            justify-content: space-between;
        }

        /* 大纲目录列表 */
        .outline-wrapper {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .outline-row {
            display: grid;
            grid-template-columns: 80px 1.5fr 3fr 120px;
            align-items: center;
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            transition: background-color 0.2s;
        }
        .outline-row:last-child {
            border-bottom: none;
        }
        .outline-row:hover {
            background-color: var(--bg-light);
        }
        .outline-idx {
            font-size: 16px;
            font-weight: 800;
            color: var(--primary);
        }
        .outline-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--darker);
        }
        .outline-desc {
            font-size: 14px;
            color: var(--text-muted);
            padding-right: 20px;
        }
        .outline-tag {
            font-size: 12px;
            text-align: right;
            color: var(--accent);
            font-weight: 600;
        }

        /* 讲师/专家背书 */
        .endorse-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .endorse-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 30px;
            border: 1px solid var(--border-color);
            text-align: center;
            box-shadow: var(--card-shadow);
        }
        .endorse-avatar {
            width: 80px;
            height: 80px;
            margin: 0 auto 16px;
            border-radius: 50%;
            object-fit: cover;
            border: 3px solid var(--primary);
        }
        .endorse-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .endorse-title {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 14px;
        }
        .endorse-bio {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 成果成果与压测对比 */
        .metrics-banner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: #0f172a;
            color: #ffffff;
            padding: 40px;
            border-radius: var(--radius-lg);
        }
        .metric-cell {
            border-right: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0 20px;
        }
        .metric-cell:last-child {
            border-right: none;
        }
        .metric-num {
            font-size: 32px;
            font-weight: 800;
            color: #ff9166;
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 14px;
            font-weight: 600;
            color: #f1f5f9;
            margin-bottom: 6px;
        }
        .metric-sub {
            font-size: 12px;
            color: #94a3b8;
            line-height: 1.5;
        }

        /* 实时试听测速入口 */
        .diag-wrapper {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 35px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            box-shadow: var(--card-shadow);
        }
        .terminal-box {
            background: #0f172a;
            color: #38bdf8;
            font-family: monospace;
            padding: 20px;
            border-radius: 8px;
            font-size: 13px;
            line-height: 1.8;
            border: 1px solid #334155;
        }
        .terminal-box span.green {
            color: #4ade80;
        }
        .terminal-box span.white {
            color: #f8fafc;
        }

        /* 图文深度专题 */        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 50px;
        }
        .feature-block:last-child {
            margin-bottom: 0;
        }
        .feature-block.reverse {
            direction: rtl;
        }
        .feature-block.reverse .feature-content {
            direction: ltr;
        }
        .feature-block.reverse .feature-media {
            direction: ltr;
        }
        .feature-media img {
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .feature-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--darker);
            margin-bottom: 14px;
        }
        .feature-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            list-style: none;
        }
        .feature-list li {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feature-list li::before {
            content: '✓';
            color: #10b981;
            font-weight: bold;
        }

        /* 资讯与技术专栏列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: #ffffff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease;
        }
        .news-card:hover {
            transform: translateY(-4px);
        }
        .news-thumb {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }
        .news-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .news-heading {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-excerpt {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex-grow: 1;
        }
        .news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 极速注册与开通预约 CTA */
        .cta-box {
            background: linear-gradient(135deg, #0f4c81 0%, #0b375d 100%);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        .cta-content {
            max-width: 650px;
        }
        .cta-content h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-content p {
            font-size: 15px;
            color: #cbd5e1;
            line-height: 1.7;
        }
        .cta-action {
            display: flex;
            flex-direction: column;
            gap: 12px;
            min-width: 200px;
        }
        .cta-primary-btn {
            background-color: var(--accent);
            color: #ffffff;
            text-align: center;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
        }
        .cta-primary-btn:hover {
            background-color: #e55a28;
        }
        .cta-sub-text {
            font-size: 12px;
            color: #94a3b8;
            text-align: center;
        }

        /* 统一页脚 */
        .site-footer {
            background-color: #0b1120;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand .brand-logo {
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: #64748b;
        }
        .footer-col h4 {
            font-size: 15px;
            color: #ffffff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: #94a3b8;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            padding-top: 25px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748b;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .endorse-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
            .metric-cell {
                border-right: none;
            }
            .diag-wrapper {
                grid-template-columns: 1fr;
            }
            .feature-block {
                grid-template-columns: 1fr;
            }
            .feature-block.reverse {
                direction: ltr;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
            }
            .cta-content {
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .top-promo-bar .container {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
            .main-nav-bar {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
                gap: 12px;
            }
            .nav-menu {
                overflow-x: auto;
                width: 100%;
                padding-bottom: 6px;
                gap: 16px;
            }
            .nav-actions {
                width: 100%;
                justify-content: space-between;
            }
            .nav-search input {
                width: 100%;
            }
            .hero-title {
                font-size: 26px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .endorse-grid {
                grid-template-columns: 1fr;
            }
            .outline-row {
                grid-template-columns: 40px 1fr;
                gap: 10px;
            }
            .outline-desc {
                grid-column: span 2;
                padding-right: 0;
            }
            .outline-tag {
                grid-column: span 2;
                text-align: left;
            }
            .metrics-banner {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --secondary: #0f172a;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --success: #10b981;
      --success-bg: #ecfdf5;
      --warning: #f59e0b;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
      --container-max: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    /* Promo announcement bar */
    .top-promo-bar {
      background-color: var(--secondary);
      color: #94a3b8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-promo-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .promo-tag {
      background-color: var(--accent);
      color: #ffffff;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 600;
      margin-right: 8px;
      display: inline-block;
    }
    .promo-links a {
      color: #cbd5e1;
      margin-left: 16px;
    }
    .promo-links a:hover {
      color: #ffffff;
    }

    /* Site Header */
    .site-header {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .main-nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 4px;
      font-size: 22px;
      font-weight: 700;
      color: var(--secondary);
      letter-spacing: -0.5px;
    }
    .site-logo span {
      color: var(--primary);
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 4px;
      position: relative;
    }
    .nav-item a:hover,
    .nav-item.active a {
      color: var(--primary);
    }
    .nav-item.active a::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .nav-search {
      position: relative;
    }
    .nav-search input {
      padding: 8px 14px;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      font-size: 13px;
      outline: none;
      width: 170px;
      background-color: #f8fafc;
      transition: all 0.2s ease;
    }
    .nav-search input:focus {
      border-color: var(--primary);
      width: 210px;
      background-color: #fff;
    }
    .nav-btn {
      background-color: var(--primary);
      color: #ffffff;
      padding: 8px 18px;
      border-radius: var(--radius-md);
      font-size: 14px;
      font-weight: 600;
      display: inline-block;
      transition: background-color 0.2s;
    }
    .nav-btn:hover {
      background-color: var(--primary-dark);
      color: #fff;
    }

    /* Page Hero / Section 1 */
    .sec-category-hero {
      position: relative;
      background-color: #0b1329;
      color: #ffffff;
      padding: 80px 0 60px;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/404c086c4b3e8a70.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      mix-blend-mode: overlay;
    }
    .hero-content-wrap {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(2, 132, 199, 0.2);
      border: 1px solid rgba(2, 132, 199, 0.4);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 13px;
      color: var(--primary-light);
      margin-bottom: 20px;
    }
    .sec-category-hero h1 {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .sec-category-hero p {
      font-size: 16px;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 30px;
    }
    .hero-action-group {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
      padding: 12px 26px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
      transition: all 0.2s;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      color: #fff;
      transform: translateY(-1px);
    }
    .btn-outline-light {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.2);
      color: #f1f5f9;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      font-weight: 500;
      font-size: 15px;
      transition: all 0.2s;
    }
    .btn-outline-light:hover {
      background: rgba(255,255,255,0.12);
      color: #ffffff;
    }
    .hero-monitor-card {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.12);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .monitor-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 12px;
      margin-bottom: 16px;
    }
    .monitor-title {
      font-size: 14px;
      font-weight: 600;
      color: #e2e8f0;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .status-pulse {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10b981;
      box-shadow: 0 0 8px #10b981;
    }
    .monitor-meta {
      font-size: 12px;
      color: #64748b;
    }
    .monitor-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .metric-cell {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.06);
      padding: 12px;
      border-radius: var(--radius-sm);
    }
    .metric-num {
      font-size: 20px;
      font-weight: 700;
      color: #38bdf8;
      display: block;
      margin-bottom: 2px;
    }
    .metric-label {
      font-size: 12px;
      color: #94a3b8;
    }

    /* Section Global Styles */
    .sec-block {
      padding: 72px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .sec-block.bg-light {
      background-color: #f1f5f9;
    }
    .sec-header {
      margin-bottom: 48px;
      max-width: 760px;
    }
    .sec-pre {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      margin-bottom: 8px;
      display: block;
    }
    .sec-header h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .sec-header p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 2: Core Architecture Layers */
    .arch-layer-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .layer-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .layer-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
      border-color: #cbd5e1;
    }
    .layer-idx {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background-color: var(--primary-light);
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .layer-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 12px;
    }
    .layer-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .layer-feature-list {
      list-style: none;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }
    .layer-feature-list li {
      font-size: 13px;
      color: var(--text-main);
      padding: 4px 0;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .layer-feature-list li::before {
      content: "•";
      color: var(--primary);
      font-weight: bold;
    }

    /* Section 3: Topology Showcase */
    .topo-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .topo-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .topo-img-wrap img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .topo-badge-overlay {
      position: absolute;
      bottom: 16px;
      left: 16px;
      background: rgba(15, 23, 42, 0.88);
      color: #ffffff;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      backdrop-filter: blur(4px);
    }
    .topo-details h3 {
      font-size: 24px;
      color: var(--secondary);
      margin-bottom: 14px;
    }
    .topo-details p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .topo-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 24px;
    }
    .stat-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
    }
    .stat-box .num {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
    }
    .stat-box .desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Section 4: Load Balancing Algorithms */
    .algo-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .algo-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
    }
    .algo-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary-dark);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .algo-card h4 {
      font-size: 16px;
      color: var(--secondary);
      margin-bottom: 10px;
    }
    .algo-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 5: Protocol & Relay Matrix */
    .matrix-table-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .matrix-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 640px;
    }
    .matrix-table th {
      background-color: #f8fafc;
      color: var(--secondary);
      font-size: 14px;
      font-weight: 600;
      padding: 14px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .matrix-table td {
      padding: 14px 20px;
      font-size: 14px;
      color: var(--text-main);
      border-bottom: 1px solid var(--border-color);
    }
    .matrix-table tr:last-child td {
      border-bottom: none;
    }
    .matrix-table tr:hover td {
      background-color: #fbfcfe;
    }
    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      background: var(--success-bg);
      color: var(--success);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 8px;
      border-radius: 12px;
    }

    /* Section 6: Failover & Health Check Workflow */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      position: relative;
    }
    .step-badge {
      display: inline-block;
      width: 32px;
      height: 32px;
      line-height: 32px;
      text-align: center;
      background: var(--secondary);
      color: #ffffff;
      font-weight: 700;
      border-radius: 50%;
      margin-bottom: 14px;
      font-size: 14px;
    }
    .flow-step-item h4 {
      font-size: 16px;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .flow-step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 7: Dispatch Case & Data Insights */
    .case-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent);
      background: #fff7ed;
      padding: 3px 10px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 14px;
    }
    .case-card h3 {
      font-size: 18px;
      color: var(--secondary);
      margin-bottom: 10px;
    }
    .case-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .case-metric-row {
      display: flex;
      gap: 24px;
      background: #f8fafc;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
    }
    .case-metric-item span {
      display: block;
      font-size: 11px;
      color: var(--text-muted);
    }
    .case-metric-item strong {
      font-size: 16px;
      color: var(--secondary);
    }

    /* Section 8: Final Activation Block */
    .sec-action-banner {
      background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 48px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 30px;
      box-shadow: var(--shadow-lg);
      margin: 40px auto;
    }
    .banner-text h3 {
      font-size: 26px;
      margin-bottom: 10px;
      letter-spacing: -0.3px;
    }
    .banner-text p {
      color: #94a3b8;
      font-size: 15px;
      max-width: 620px;
      line-height: 1.6;
    }
    .banner-actions {
      display: flex;
      gap: 14px;
      flex-shrink: 0;
    }

    /* Site Footer */
    .site-footer {
      background-color: var(--secondary);
      color: #94a3b8;
      padding: 60px 0 24px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand .brand-logo {
      font-size: 20px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #64748b;
      max-width: 320px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94a3b8;
      transition: color 0.2s;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748b;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .arch-layer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .algo-container {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .main-nav-bar {
        height: auto;
        padding: 14px 0;
        flex-direction: column;
        gap: 14px;
      }
      .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
      }
      .nav-actions {
        width: 100%;
        justify-content: center;
      }
      .hero-content-wrap {
        grid-template-columns: 1fr;
      }
      .sec-category-hero h1 {
        font-size: 28px;
      }
      .topo-split {
        grid-template-columns: 1fr;
      }
      .arch-layer-grid {
        grid-template-columns: 1fr;
      }
      .algo-container {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .case-container {
        grid-template-columns: 1fr;
      }
      .sec-action-banner {
        flex-direction: column;
        text-align: center;
        padding: 32px 20px;
      }
      .banner-actions {
        flex-direction: column;
        width: 100%;
      }
      .banner-actions a {
        width: 100%;
        text-align: center;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

/* roulang page: category2 */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --primary-light: #e0f2fe;
            --secondary: #0f172a;
            --accent: #f97316;
            --accent-hover: #ea580c;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --success: #10b981;
            --success-bg: #ecfdf5;
            --warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部公告条 */
        .promo-bar {
            background-color: var(--secondary);
            color: #94a3b8;
            font-size: 13px;
            padding: 7px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .promo-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .promo-tag {
            background-color: var(--accent);
            color: #ffffff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            margin-right: 8px;
        }

        .promo-links {
            display: flex;
            gap: 16px;
        }

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

        /* 导航 */
        .site-header {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

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

        .site-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .site-logo span {
            color: var(--primary);
            font-size: 18px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }

        .nav-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 0;
            position: relative;
        }

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

        .nav-item.active a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }

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

        .nav-search {
            position: relative;
        }

        .nav-search input {
            padding: 8px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            outline: none;
            width: 170px;
            transition: all 0.2s ease;
            background-color: #f8fafc;
        }

        .nav-search input:focus {
            border-color: var(--primary);
            width: 200px;
            background-color: #ffffff;
        }

        .nav-btn {
            background-color: var(--primary);
            color: #ffffff;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            display: inline-block;
            transition: background-color 0.2s ease, transform 0.1s ease;
        }

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

        /* 基础 Section */
        .section-block {
            padding: 70px 0;
        }

        .section-block-alt {
            background-color: #ffffff;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            margin-bottom: 44px;
        }

        .section-subtitle {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--primary);
            margin-bottom: 8px;
            display: inline-block;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--secondary);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 760px;
        }

        /* Hero: 新品发布倒计时环 + 卖点 */
        .hero-banner {
            background: linear-gradient(135deg, #091e3a 0%, #0f172a 100%);
            color: #ffffff;
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .hero-banner::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 600px;
            height: 100%;
            background: radial-gradient(circle, rgba(2,132,199,0.15) 0%, rgba(15,23,42,0) 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.25fr 0.95fr;
            gap: 48px;
            align-items: center;
        }

        .hero-tag-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .hero-badge {
            background: rgba(2, 132, 199, 0.2);
            color: #38bdf8;
            border: 1px solid rgba(56, 189, 248, 0.3);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 20px;
        }

        .hero-version {
            color: #94a3b8;
            font-size: 13px;
        }

        .hero-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            color: #38bdf8;
        }

        .hero-summary {
            font-size: 16px;
            color: #cbd5e1;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-keypoints {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-point {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: #e2e8f0;
        }

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

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

        .btn-reserve {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 14px rgba(249, 115, 22, 0.4);
            border: none;
            cursor: pointer;
        }

        .btn-reserve:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background-color: transparent;
            color: #ffffff;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.25);
        }

        .btn-outline-light:hover {
            border-color: #ffffff;
            background-color: rgba(255,255,255,0.05);
        }

        /* 倒计时环面板 */
        .countdown-card {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
        }

        .countdown-head {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 16px;
            margin-bottom: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .countdown-head h3 {
            font-size: 17px;
            color: #ffffff;
        }

        .countdown-status {
            font-size: 12px;
            background-color: rgba(16, 185, 129, 0.2);
            color: #34d399;
            padding: 3px 8px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .countdown-status::before {
            content: "";
            width: 6px;
            height: 6px;
            background: #10b981;
            border-radius: 50%;
        }

        .ring-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-bottom: 24px;
            text-align: center;
        }

        .ring-item {
            background: rgba(15, 23, 42, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 14px 6px;
        }

        .ring-num {
            font-size: 26px;
            font-weight: 700;
            color: #38bdf8;
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
        }

        .ring-label {
            font-size: 11px;
            color: #94a3b8;
            margin-top: 4px;
        }

        .spec-mini-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .spec-mini-item {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: #cbd5e1;
            padding: 8px 12px;
            background: rgba(15, 23, 42, 0.4);
            border-radius: 6px;
        }

        .spec-mini-val {
            color: #38bdf8;
            font-weight: 600;
        }

        /* 核心规格与功能分组 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.25s ease;
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #cbd5e1;
        }

        .feature-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 3px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 16px;
        }

        .feature-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .feature-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .feature-points {
            list-style: none;
            border-top: 1px dashed var(--border-color);
            padding-top: 14px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .feature-points li {
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .feature-points li::before {
            content: "✓";
            color: var(--success);
            font-weight: 700;
        }

        /* 场景演示与控制面板 */
        .showcase-wrapper {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }

        .showcase-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            background-color: #0f172a;
        }

        .showcase-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .showcase-content h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 16px;
        }

        .showcase-content p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .step-timeline {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .timeline-item {
            display: flex;
            gap: 16px;
        }

        .timeline-index {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .timeline-text h4 {
            font-size: 15px;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .timeline-text p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* 成功案例与指标数据 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .metric-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
        }

        .metric-value {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .case-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

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

        .case-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 14px;
        }

        .case-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
        }

        .case-badge {
            background-color: var(--success-bg);
            color: var(--success);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 4px;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .case-stat-row {
            display: flex;
            gap: 20px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .case-stat-item {
            font-size: 13px;
            color: var(--text-main);
        }

        .case-stat-item strong {
            color: var(--primary);
            font-weight: 700;
        }

        /* 价格与接入方案 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }

        .price-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .price-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 10px 30px rgba(2, 132, 199, 0.12);
            transform: scale(1.02);
        }

        .featured-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #ffffff;
            font-size: 12px;
            font-weight: 700;
            padding: 2px 14px;
            border-radius: 20px;
        }

        .price-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .price-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            min-height: 40px;
        }

        .price-value-wrap {
            display: flex;
            align-items: baseline;
            gap: 4px;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
        }

        .price-currency {
            font-size: 20px;
            color: var(--secondary);
            font-weight: 700;
        }

        .price-num {
            font-size: 38px;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1;
        }

        .price-cycle {
            font-size: 13px;
            color: var(--text-muted);
        }

        .price-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 28px;
            flex-grow: 1;
        }

        .price-features li {
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .price-features li::before {
            content: "✓";
            color: var(--primary);
            font-weight: 700;
        }

        .price-btn {
            width: 100%;
            padding: 11px;
            text-align: center;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            border: 1px solid var(--primary);
            background: transparent;
            color: var(--primary);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .price-btn:hover {
            background: var(--primary);
            color: #ffffff;
        }

        .price-card.featured .price-btn {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
        }

        .price-card.featured .price-btn:hover {
            background: var(--primary-dark);
        }

        /* 评价墙与口碑 */
        .review-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.6;
            margin-bottom: 18px;
            position: relative;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }

        .review-avatar-char {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .review-meta h5 {
            font-size: 14px;
            color: var(--secondary);
            margin-bottom: 2px;
        }

        .review-meta span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 资讯与技术文档列表 */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: transform 0.2s ease;
        }

        .article-card:hover {
            transform: translateY(-3px);
        }

        .article-thumb {
            height: 160px;
            overflow: hidden;
            background: #e2e8f0;
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .article-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .article-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .article-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .article-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            flex-grow: 1;
        }

        .article-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 行动收口 CTA */
        .cta-box {
            background: linear-gradient(135deg, #091e3a 0%, #0369a1 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 15px 30px rgba(3, 105, 161, 0.25);
        }

        .cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 15px;
            color: #e0f2fe;
            max-width: 620px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
        }

        .cta-input {
            padding: 12px 18px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.1);
            color: #ffffff;
            font-size: 14px;
            outline: none;
            width: 240px;
        }

        .cta-input::placeholder {
            color: #cbd5e1;
        }

        .cta-submit {
            background: var(--accent);
            color: #ffffff;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: background-color 0.2s ease;
        }

        .cta-submit:hover {
            background: var(--accent-hover);
        }

        /* 页脚统一复用 */
        .site-footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid #1e293b;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand .brand-logo {
            color: #ffffff;
            margin-bottom: 16px;
            font-size: 20px;
        }

        .footer-brand p {
            line-height: 1.6;
            color: #64748b;
            font-size: 13px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 13px;
        }

        .footer-links a:hover {
            color: #38bdf8;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748b;
        }

        /* 移动端断点适配 */
        @media (max-width: 1024px) {
            .hero-grid,
            .showcase-wrapper,
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-grid,
            .pricing-grid,
            .review-wall,
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-form {
                width: 100%;
            }
            .cta-input {
                flex-grow: 1;
                width: auto;
            }
        }

        @media (max-width: 768px) {
            .promo-bar {
                display: none;
            }
            .nav-menu {
                display: none;
            }
            .feature-grid,
            .pricing-grid,
            .review-wall,
            .article-grid,
            .case-cards {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-keypoints {
                grid-template-columns: 1fr;
            }
            .ring-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #0284c7;
    --primary-dark: #0369a1;
    --primary-light: #e0f2fe;
    --secondary: #0f172a;
    --accent: #f97316;
    --accent-hover: #ea580c;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
    --container-max: 1200px;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: color 0.2s ease;
  }
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
  }
  /* 导航系统与电商促销条 */
  .top-promo-bar {
    background-color: var(--secondary);
    color: #cbd5e1;
    font-size: 13px;
    padding: 7px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .promo-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .promo-left {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .promo-tag {
    background-color: var(--accent);
    color: #ffffff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
  }
  .promo-links {
    display: flex;
    gap: 16px;
    font-size: 12px;
  }
  .promo-links a:hover {
    color: #ffffff;
  }
  .site-header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
  }
  .main-nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }
  .site-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 800;
    color: var(--secondary);
    letter-spacing: -0.5px;
  }
  .site-logo span {
    color: var(--primary);
  }
  .nav-menu {
    display: flex;
    list-style: none;
    gap: 24px;
    align-items: center;
  }
  .nav-item a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    padding: 8px 4px;
    position: relative;
  }
  .nav-item a:hover,
  .nav-item.active a {
    color: var(--primary);
  }
  .nav-item.active a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary);
    border-radius: 2px;
  }
  .nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .nav-search {
    position: relative;
  }
  .nav-search input {
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 13px;
    outline: none;
    width: 170px;
    background-color: #f8fafc;
    transition: all 0.2s ease;
  }
  .nav-search input:focus {
    border-color: var(--primary);
    width: 210px;
    background-color: #ffffff;
  }
  .nav-btn {
    background-color: var(--primary);
    color: #ffffff;
    padding: 8px 18px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    transition: background-color 0.2s ease;
  }
  .nav-btn:hover {
    background-color: var(--primary-dark);
  }

  /* 通用Section布局 */
  .section-padding {
    padding: 70px 0;
  }
  .section-title-wrap {
    margin-bottom: 40px;
  }
  .section-tag {
    display: inline-block;
    color: var(--primary);
    background-color: var(--primary-light);
    font-size: 13px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
  }
  .section-heading {
    font-size: 30px;
    font-weight: 800;
    color: var(--secondary);
    line-height: 1.3;
    margin-bottom: 12px;
  }
  .section-desc {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 720px;
  }

  /* 01. 随机版式蓝图：前后对比首屏 Before/After 并置 */
  .hero-comparison-section {
    background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 60px 0 80px 0;
  }
  .hero-header {
    text-align: center;
    margin-bottom: 50px;
  }
  .hero-header h1 {
    font-size: 36px;
    font-weight: 900;
    color: var(--secondary);
    line-height: 1.25;
    margin-bottom: 16px;
  }
  .hero-header p {
    font-size: 17px;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
  }
  .comparison-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: stretch;
    margin-bottom: 40px;
  }
  .compare-card {
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-md);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .compare-card.before {
    background: #ffffff;
    border: 1px dashed #cbd5e1;
  }
  .compare-card.after {
    background: linear-gradient(145deg, #ffffff 0%, #f0fdf4 100%);
    border: 2px solid var(--success);
    box-shadow: 0 12px 24px -6px rgba(16, 185, 129, 0.12);
  }
  .compare-badge {
    position: absolute;
    top: -14px;
    left: 36px;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
  }
  .compare-badge.bad {
    background-color: #64748b;
    color: #ffffff;
  }
  .compare-badge.good {
    background-color: var(--success);
    color: #ffffff;
  }
  .compare-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary);
  }
  .metric-box {
    margin-bottom: 24px;
    padding: 16px;
    border-radius: var(--radius-md);
  }
  .metric-box.grey {
    background-color: #f1f5f9;
  }
  .metric-box.green {
    background-color: #dcfce7;
  }
  .metric-val {
    font-size: 32px;
    font-weight: 800;
  }
  .metric-box.grey .metric-val {
    color: #64748b;
  }
  .metric-box.green .metric-val {
    color: #15803d;
  }
  .metric-box span {
    font-size: 13px;
    color: var(--text-muted);
    display: block;
    margin-top: 4px;
  }
  .compare-card ul {
    list-style: none;
    margin-bottom: 24px;
  }
  .compare-card ul li {
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .compare-card.before ul li::before {
    content: "✕";
    color: #ef4444;
    font-weight: bold;
  }
  .compare-card.after ul li::before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
  }
  .hero-cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
  }

  /* 02. 加速链路架构与核心功能分组 */
  .features-grid-section {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
  }
  .features-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .feature-box {
    background-color: var(--bg-page);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all 0.25s ease;
  }
  .feature-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
  }
  .feature-num {
    font-size: 13px;
    font-weight: 800;
    color: var(--primary);
    background-color: #ffffff;
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
  }
  .feature-box h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 10px;
  }
  .feature-box p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
  }

  /* 03. 业务加速应用场景矩阵 */
  .scenarios-section {
    background-color: var(--bg-page);
    border-bottom: 1px solid var(--border-color);
  }
  .scenarios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .scenario-card {
    background-color: #ffffff;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
  }
  .scenario-card:hover {
    transform: translateY(-4px);
  }
  .scenario-thumb {
    height: 150px;
    overflow: hidden;
    position: relative;
  }
  .scenario-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .scenario-body {
    padding: 20px;
  }
  .scenario-body h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
  }
  .scenario-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
  }

  /* 04. 拓扑解析与节点分布大图演示 */
  .topology-demo-section {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
  }
  .topology-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }
  .topology-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
  }
  .topology-visual img {
    width: 100%;
    height: auto;
  }
  .topology-details h3 {
    font-size: 26px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 16px;
  }
  .topology-details p {
    font-size: 15px;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
  }
  .topology-checklist {
    list-style: none;
    margin-bottom: 24px;
  }
  .topology-checklist li {
    font-size: 14px;
    color: var(--text-main);
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }
  .topology-checklist li svg {
    flex-shrink: 0;
    margin-top: 4px;
    fill: var(--primary);
  }

  /* 05. 性能与中继指标量化墙 */
  .benchmark-section {
    background-color: var(--secondary);
    color: #ffffff;
    padding: 70px 0;
  }
  .benchmark-header {
    text-align: center;
    margin-bottom: 40px;
  }
  .benchmark-header h3 {
    font-size: 28px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 12px;
  }
  .benchmark-header p {
    font-size: 15px;
    color: #94a3b8;
  }
  .benchmark-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .benchmark-card {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
  }
  .benchmark-number {
    font-size: 38px;
    font-weight: 900;
    color: var(--accent);
    margin-bottom: 8px;
    font-family: monospace;
  }
  .benchmark-label {
    font-size: 15px;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 6px;
  }
  .benchmark-sub {
    font-size: 12px;
    color: #94a3b8;
  }

  /* 06. 部署配置与套餐等级规格 */
  .pricing-section {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
  }
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: stretch;
  }
  .pricing-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.25s ease;
  }
  .pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 12px 30px -8px rgba(2, 132, 199, 0.15);
    position: relative;
  }
  .featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary);
    color: #ffffff;
    padding: 3px 14px;
    font-size: 11px;
    font-weight: 700;
    border-radius: 20px;
    letter-spacing: 0.5px;
  }
  .pricing-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 12px;
  }
  .pricing-price {
    font-size: 32px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 16px;
  }
  .pricing-price span {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: normal;
  }
  .pricing-card ul {
    list-style: none;
    margin-bottom: 30px;
    flex-grow: 1;
  }
  .pricing-card ul li {
    font-size: 14px;
    color: var(--text-main);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .pricing-card ul li::before {
    content: "•";
    color: var(--primary);
    font-weight: bold;
    font-size: 18px;
  }
  .btn-outline {
    display: block;
    text-align: center;
    border: 1px solid var(--border-color);
    background-color: #ffffff;
    color: var(--secondary);
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s ease;
  }
  .btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
  }
  .btn-block-primary {
    display: block;
    text-align: center;
    background-color: var(--primary);
    color: #ffffff;
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
  }
  .btn-block-primary:hover {
    background-color: var(--primary-dark);
  }

  /* 07. 行业客户加速成效与评价列表 */
  .feedback-section {
    background-color: var(--bg-page);
    border-bottom: 1px solid var(--border-color);
  }
  .feedback-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .feedback-card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
  }
  .feedback-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
  }
  .feedback-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
  }
  .feedback-user h5 {
    font-size: 15px;
    font-weight: 700;
    color: var(--secondary);
  }
  .feedback-user span {
    font-size: 12px;
    color: var(--text-muted);
  }
  .feedback-text {
    font-size: 14px;
    color: var(--text-main);
    line-height: 1.6;
    margin-bottom: 12px;
  }
  .feedback-rate {
    color: #f59e0b;
    font-size: 13px;
  }

  /* 08. 加速协议与优化技术资讯 */
  .news-section {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
  }
  .news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .news-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: #ffffff;
    display: flex;
    flex-direction: column;
  }
  .news-cover {
    height: 170px;
    overflow: hidden;
  }
  .news-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .news-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .news-date {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: block;
  }
  .news-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 10px;
    line-height: 1.4;
  }
  .news-content p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
  }

  /* 09. 开通接入与分发集群配置对接 */
  .cta-section {
    background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
    color: #ffffff;
    padding: 70px 0;
    text-align: center;
  }
  .cta-box {
    max-width: 680px;
    margin: 0 auto;
  }
  .cta-box h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    color: #ffffff;
  }
  .cta-box p {
    font-size: 16px;
    color: #94a3b8;
    margin-bottom: 30px;
    line-height: 1.6;
  }
  .cta-form {
    display: flex;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto 20px auto;
  }
  .cta-form input {
    flex-grow: 1;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.2);
    background-color: rgba(255,255,255,0.08);
    color: #ffffff;
    font-size: 14px;
    outline: none;
  }
  .cta-form input::placeholder {
    color: #94a3b8;
  }
  .cta-form button {
    background-color: var(--accent);
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }
  .cta-form button:hover {
    background-color: var(--accent-hover);
  }
  .cta-note {
    font-size: 12px;
    color: #94a3b8;
  }

  /* 页脚统一视觉样式 */
  .site-footer {
    background-color: var(--secondary);
    color: #94a3b8;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
  }
  .footer-brand .brand-logo {
    font-size: 22px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 16px;
    display: inline-block;
  }
  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: #94a3b8;
  }
  .footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 8px;
  }
  .footer-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--primary);
  }
  .footer-links {
    list-style: none;
  }
  .footer-links li {
    margin-bottom: 10px;
  }
  .footer-links a {
    font-size: 13px;
    color: #94a3b8;
    transition: color 0.2s ease;
  }
  .footer-links a:hover {
    color: #ffffff;
  }
  .footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: 13px;
    color: #64748b;
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  /* 响应式断点适配 */
  @media (max-width: 1024px) {
    .features-layout,
    .feedback-grid,
    .news-grid,
    .pricing-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .scenarios-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .benchmark-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
  }

  @media (max-width: 768px) {
    .main-nav-bar {
      height: auto;
      padding: 12px 0;
      flex-wrap: wrap;
      gap: 12px;
    }
    .nav-menu {
      order: 3;
      width: 100%;
      overflow-x: auto;
      white-space: nowrap;
      gap: 16px;
      padding-bottom: 4px;
    }
    .nav-actions {
      margin-left: auto;
    }
    .nav-search input {
      width: 130px;
    }
    .nav-search input:focus {
      width: 150px;
    }
    .comparison-wrapper,
    .topology-container {
      grid-template-columns: 1fr;
    }
    .features-layout,
    .feedback-grid,
    .news-grid,
    .pricing-grid,
    .scenarios-grid,
    .benchmark-grid {
      grid-template-columns: 1fr;
    }
    .hero-header h1 {
      font-size: 26px;
    }
    .section-heading {
      font-size: 24px;
    }
    .cta-form {
      flex-direction: column;
    }
    .footer-grid {
      grid-template-columns: 1fr;
    }
    .promo-inner {
      flex-direction: column;
      gap: 4px;
      text-align: center;
    }
  }

/* roulang page: category4 */
:root {
            --primary: #0284c7;
            --primary-dark: #0369a1;
            --primary-light: #e0f2fe;
            --secondary: #0f172a;
            --accent: #f97316;
            --accent-hover: #ea580c;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border-color: #e2e8f0;
            --success: #10b981;
            --success-bg: #ecfdf5;
            --warning: #f59e0b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 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);
            --container-max: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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: all 0.2s ease;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Top Bar */
        .site-topbar {
            background-color: var(--secondary);
            color: #94a3b8;
            font-size: 12px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .topbar-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-promo {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .promo-tag {
            background-color: var(--accent);
            color: #ffffff;
            padding: 1px 6px;
            border-radius: 3px;
            font-size: 11px;
            font-weight: 600;
        }
        .topbar-links {
            display: flex;
            gap: 16px;
        }
        .topbar-links a:hover {
            color: #ffffff;
        }

        /* Header Navigation */
        .site-header {
            background-color: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .main-nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
        }
        .site-logo span {
            color: var(--primary);
            font-size: 16px;
            margin-left: 2px;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 28px;
            align-items: center;
        }
        .nav-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 0;
            position: relative;
        }
        .nav-item.active a,
        .nav-item a:hover {
            color: var(--primary);
        }
        .nav-item.active a::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-search input {
            padding: 7px 14px;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            font-size: 13px;
            outline: none;
            width: 170px;
            background-color: #f8fafc;
            transition: all 0.2s ease;
        }
        .nav-search input:focus {
            border-color: var(--primary);
            width: 210px;
            background-color: #fff;
        }
        .nav-btn {
            background-color: var(--primary);
            color: #ffffff;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            transition: background-color 0.2s;
        }
        .nav-btn:hover {
            background-color: var(--primary-dark);
        }

        /* Buttons & Badges */
        .btn-brand {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #ffffff;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
            transition: all 0.2s;
        }
        .btn-brand:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
        }
        .btn-outline {
            background: #ffffff;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .badge {
            display: inline-block;
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
        }
        .badge-primary {
            background-color: var(--primary-light);
            color: var(--primary-dark);
        }
        .badge-success {
            background-color: var(--success-bg);
            color: var(--success);
        }

        /* Typography Helper */
        .section-header {
            margin-bottom: 40px;
        }
        .section-tag {
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
            display: block;
        }
        .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
        }

        /* Whitepaper Hero (Blueprint) */
        .hero-whitepaper {
            padding: 60px 0 80px;
            background: linear-gradient(180deg, #ffffff 0%, #f1f5f9 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 50px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 900;
            line-height: 1.25;
            color: var(--secondary);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .hero-toc {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-bottom: 28px;
            box-shadow: var(--shadow-sm);
        }
        .hero-toc-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-toc-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 16px;
        }
        .hero-toc-list li {
            font-size: 13px;
            color: var(--text-main);
            position: relative;
            padding-left: 14px;
        }
        .hero-toc-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }
        .download-box {
            background: #ffffff;
            border: 2px dashed #cbd5e1;
            padding: 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }
        .download-form {
            display: flex;
            gap: 12px;
            margin-top: 14px;
        }
        .download-form input {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            outline: none;
        }
        .download-form input:focus {
            border-color: var(--primary);
        }
        .book-preview {
            position: relative;
        }
        .book-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.2);
            border: 1px solid var(--border-color);
            position: relative;
        }
        .book-card img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .book-info {
            padding: 20px;
            background: #ffffff;
        }
        .book-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
            margin-top: 12px;
        }

        /* Section 1: 基线指标与防护矩阵 */
        .section-matrix {
            padding: 70px 0;
            background: #ffffff;
        }
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .matrix-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            background: var(--bg-page);
            transition: all 0.3s ease;
        }
        .matrix-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .matrix-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }
        .matrix-label {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .matrix-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Section 2: 核心功能架构分组 */
        .section-features {
            padding: 70px 0;
            background: var(--bg-page);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .feature-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: border-color 0.2s;
        }
        .feature-item:hover {
            border-color: var(--primary);
        }
        .feature-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .feature-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-lg);
        }
        .feature-media img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        /* Section 3: 实战场景与攻防应对 */
        .section-scenarios {
            padding: 70px 0;
            background: #ffffff;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .scenario-thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .scenario-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scenario-card:hover .scenario-thumb img {
            transform: scale(1.05);
        }
        .scenario-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scenario-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .scenario-text {
            font-size: 14px;
            color: var(--text-muted);;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .scenario-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .scenario-tag {
            font-size: 12px;
            padding: 2px 8px;
            background-color: var(--bg-page);
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        /* Section 4: 拓扑演练与控制台演示 */
        .section-demo {
            padding: 70px 0;
            background: #0f172a;
            color: #ffffff;
        }
        .section-demo .section-title {
            color: #ffffff;
        }
        .section-demo .section-subtitle {
            color: #94a3b8;
        }
        .console-box {
            background: #1e293b;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.1);
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            margin-top: 36px;
        }
        .console-header {
            background: #0b1120;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .console-dots {
            display: flex;
            gap: 6px;
        }
        .console-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #475569;
        }
        .console-dots span:nth-child(1) { background-color: #ef4444; }
        .console-dots span:nth-child(2) { background-color: #f59e0b; }
        .console-dots span:nth-child(3) { background-color: #10b981; }
        .console-title {
            font-size: 13px;
            color: #94a3b8;
            font-family: monospace;
        }
        .console-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            min-height: 320px;
        }
        .console-viewport {
            position: relative;
            background: #020617;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .console-viewport img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.75;
        }
        .console-panel {
            padding: 24px;
            background: #1e293b;
            border-left: 1px solid rgba(255,255,255,0.08);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .console-metric {
            border-bottom: 1px solid rgba(255,255,255,0.06);
            padding-bottom: 12px;
        }
        .console-metric-title {
            font-size: 12px;
            color: #94a3b8;
            margin-bottom: 4px;
        }
        .console-metric-val {
            font-size: 20px;
            font-weight: 700;
            color: #38bdf8;
            font-family: monospace;
        }

        /* Section 5: 成功案例文献 */
        .section-cases {
            padding: 70px 0;
            background: var(--bg-page);
        }
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .case-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 16px;
        }
        .case-badge {
            font-size: 12px;
            background: #e2e8f0;
            color: #334155;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .case-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .case-detail {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
        }
        .case-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            background: var(--bg-page);
            padding: 12px 16px;
            border-radius: var(--radius-md);
            gap: 12px;
        }
        .stat-item-label {
            font-size: 12px;
            color: var(--text-muted);
        }
        .stat-item-val {
            font-size: 16px;
            font-weight: 700;
            color: var(--success);
        }

        /* Section 6: 服务计划与配置选型 */
        .section-pricing {
            padding: 70px 0;
            background: #ffffff;
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pricing-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            background: #ffffff;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: all 0.2s;
        }
        .pricing-card.featured {
            border-color: var(--primary);
            box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.15);
        }
        .pricing-popular-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 11px;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 20px;
        }
        .pricing-tier {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .pricing-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 16px;
        }
        .pricing-price span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: normal;
        }
        .pricing-features {
            list-style: none;
            margin-bottom: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .pricing-features li {
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .pricing-features li svg {
            width: 14px;
            height: 14px;
            fill: var(--primary);
            flex-shrink: 0;
        }

        /* Section 7: 运维团队背书与评价墙 */
        .section-testimonials {
            padding: 70px 0;
            background: var(--bg-page);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testi-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .testi-content {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .testi-meta h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--secondary);
        }
        .testi-meta p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Section 8: 运维技术简报列表 */
        .section-briefs {
            padding: 70px 0;
            background: #ffffff;
        }
        .briefs-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .brief-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px;
            background: var(--bg-page);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all 0.2s;
        }
        .brief-item:hover {
            background: #ffffff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .brief-info h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 6px;
        }
        .brief-info p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .brief-meta {
            text-align: right;
            flex-shrink: 0;
            margin-left: 20px;
        }
        .brief-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .brief-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        /* Section 9: 接入转化行动区 */
        .section-cta {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
            color: #ffffff;
            text-align: center;
        }
        .cta-content {
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 16px;
            color: #ffffff;
        }
        .cta-content p {
            font-size: 16px;
            color: #94a3b8;
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
        }

        /* Footer */
        .site-footer {
            background-color: #0b1120;
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .brand-logo {
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: #64748b;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: #94a3b8;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: #475569;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .topbar-wrapper {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
            .main-nav-bar {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 20px;
                gap: 12px;
            }
            .nav-menu {
                gap: 14px;
                overflow-x: auto;
                width: 100%;
                padding-bottom: 8px;
            }
            .nav-actions {
                width: 100%;
                justify-content: space-between;
            }
            .feature-split {
                grid-template-columns: 1fr;
            }
            .scenario-grid,
            .testimonials-grid,
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .console-grid {
                grid-template-columns: 1fr;
            }
            .download-form {
                flex-direction: column;
            }
            .brief-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .brief-meta {
                margin-left: 0;
                text-align: left;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }