/* roulang page: index */
:root {
            --bg-primary: #0b0f19;
            --bg-secondary: #111827;
            --bg-card: #141a26;
            --bg-card-hover: #1a2235;
            --bg-elevated: #182032;
            --bg-overlay: rgba(11, 15, 25, 0.85);
            --text-primary: #e8ecf1;
            --text-secondary: #b0bcc8;
            --text-weak: #6b7d90;
            --text-muted: #4a5568;
            --accent-cyan: #00c6ff;
            --accent-cyan-glow: rgba(0, 198, 255, 0.25);
            --accent-red: #ff3b5c;
            --accent-red-glow: rgba(255, 59, 92, 0.3);
            --accent-green: #00e676;
            --accent-green-glow: rgba(0, 230, 118, 0.2);
            --accent-amber: #f59e0b;
            --border-default: #1e2a3a;
            --border-light: #263348;
            --border-glow: rgba(0, 198, 255, 0.35);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--border-glow);
            --shadow-glow-cyan: 0 0 20px rgba(0, 198, 255, 0.15);
            --shadow-glow-red: 0 0 16px rgba(255, 59, 92, 0.2);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 80px;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --font-display: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (min-width: 1280px) {
            .container {
                max-width: 1240px;
                padding: 0 var(--spacing-lg);
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-default);
            height: var(--nav-height);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex: 1;
        }

        .nav-left {
            justify-content: flex-end;
            padding-right: var(--spacing-md);
        }

        .nav-right {
            justify-content: flex-start;
            padding-left: var(--spacing-md);
        }

        .nav-logo-wrap {
            flex-shrink: 0;
            text-align: center;
        }

        .nav-logo {
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.06em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }

        .nav-logo .logo-dot {
            display: inline-block;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: var(--shadow-glow-cyan);
            animation: logo-pulse 2.5s ease-in-out infinite;
        }

        @keyframes logo-pulse {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(0, 198, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 20px rgba(0, 198, 255, 0.75);
            }
        }

        .nav-logo:hover {
            color: var(--accent-cyan);
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.03);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 198, 255, 0.06);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 1px;
            box-shadow: var(--shadow-glow-cyan);
        }

        .nav-link-cat {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            letter-spacing: 0.03em;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .nav-link-cat:hover {
            color: var(--accent-red);
            border-color: rgba(255, 59, 92, 0.3);
            background: rgba(255, 59, 92, 0.04);
        }

        /* 移动端菜单按钮 */
        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .nav-mobile-toggle span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-mobile-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-default);
            padding: var(--spacing-sm) var(--spacing-md);
            flex-direction: column;
            gap: 4px;
            z-index: 999;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-mobile-menu.open {
            display: flex;
        }

        .nav-mobile-menu .nav-link,
        .nav-mobile-menu .nav-link-cat {
            display: block;
            padding: 14px 16px;
            font-size: 1rem;
            border-radius: var(--radius-md);
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .nav-container {
                justify-content: space-between;
            }
            .nav-logo-wrap {
                flex: 1;
                text-align: center;
            }
            .nav-logo {
                font-size: 1.2rem;
                justify-content: center;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile-menu {
                display: none !important;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            background-color: var(--bg-primary);
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(11, 15, 25, 0.55) 0%,
                    rgba(11, 15, 25, 0.78) 40%,
                    rgba(11, 15, 25, 0.92) 85%,
                    var(--bg-primary) 100%);
            z-index: 1;
        }

        .hero-scanline {
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(0deg,
                    transparent,
                    transparent 2px,
                    rgba(0, 198, 255, 0.015) 2px,
                    rgba(0, 198, 255, 0.015) 4px);
            z-index: 2;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 720px;
            padding: var(--spacing-2xl) var(--spacing-md);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 198, 255, 0.08);
            border: 1px solid rgba(0, 198, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: var(--spacing-md);
            text-transform: uppercase;
        }

        .hero-badge .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: var(--accent-green-glow);
            animation: status-pulse 2s ease-in-out infinite;
        }

        @keyframes status-pulse {
            0%,
            100% {
                box-shadow: 0 0 4px rgba(0, 230, 118, 0.5);
            }
            50% {
                box-shadow: 0 0 14px rgba(0, 230, 118, 0.9);
            }
        }

        .hero-title {
            font-family: var(--font-display);
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: var(--spacing-sm);
        }

        .hero-title .highlight {
            color: var(--accent-cyan);
            text-shadow: 0 0 32px rgba(0, 198, 255, 0.4);
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.65;
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: #0b0f19;
            border-color: var(--accent-cyan);
            box-shadow: 0 4px 16px rgba(0, 198, 255, 0.3);
        }

        .btn-primary:hover {
            background: #33d4ff;
            border-color: #33d4ff;
            box-shadow: 0 6px 24px rgba(0, 198, 255, 0.45);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 198, 255, 0.25);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-light);
        }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 198, 255, 0.04);
            box-shadow: 0 4px 16px rgba(0, 198, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-outline:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 440px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 380px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            color: var(--accent-cyan);
            text-transform: uppercase;
            margin-bottom: var(--spacing-xs);
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: var(--spacing-xs);
        }

        .section-desc {
            color: var(--text-weak);
            font-size: 0.95rem;
            max-width: 560px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
        }

        /* ========== SECTION: 平台介绍 ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        .intro-image-wrap {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }

        .intro-image-wrap img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .intro-image-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: rgba(11, 15, 25, 0.85);
            border: 1px solid var(--border-light);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            backdrop-filter: blur(6px);
        }

        .intro-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.03em;
        }

        .intro-text p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.75;
        }

        .intro-features {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
        }

        .intro-feature-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-default);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 7px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .intro-feature-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .intro-feature-tag .tag-icon {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-red);
            box-shadow: var(--shadow-glow-red);
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .intro-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ========== SECTION: 分类入口卡片 ========== */
        .category-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: var(--spacing-md);
        }

        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

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

        .category-card-image {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }

        .category-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .category-card:hover .category-card-image img {
            transform: scale(1.04);
        }

        .category-card-image .card-status {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(11, 15, 25, 0.8);
            border: 1px solid rgba(0, 230, 118, 0.3);
            color: var(--accent-green);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 5px 12px;
            border-radius: 50px;
            backdrop-filter: blur(4px);
        }

        .card-status .status-indicator {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: var(--accent-green-glow);
        }

        .category-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-card-body h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }

        .category-card-body p {
            font-size: 0.9rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
        }

        .category-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) var(--spacing-md);
            border-top: 1px solid var(--border-default);
            font-size: 0.85rem;
            color: var(--text-weak);
        }

        .category-card-footer .arrow-link {
            color: var(--accent-cyan);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .category-card:hover .arrow-link {
            gap: 10px;
        }

        @media (max-width: 768px) {
            .category-cards {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SECTION: 数据统计面板 ========== */
        .stats-panel {
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

        .stats-panel-header {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: var(--spacing-sm) var(--spacing-md);
            background: rgba(0, 0, 0, 0.3);
            border-bottom: 1px solid var(--border-default);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--text-weak);
            text-transform: uppercase;
        }

        .stats-panel-header .panel-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-red);
            box-shadow: var(--shadow-glow-red);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: var(--border-default);
        }

        .stat-item {
            background: var(--bg-card);
            padding: var(--spacing-md);
            text-align: center;
            transition: background var(--transition-fast);
        }

        .stat-item:hover {
            background: var(--bg-card-hover);
        }

        .stat-value {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }

        .stat-value .stat-unit {
            font-size: 1rem;
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .stat-label {
            font-size: 0.82rem;
            color: var(--text-weak);
            letter-spacing: 0.04em;
        }

        .stat-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 6px;
        }

        .stat-trend.up {
            color: var(--accent-green);
        }

        .stat-trend.stable {
            color: var(--accent-cyan);
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-value {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-value {
                font-size: 1.3rem;
            }
        }

        /* ========== SECTION: 最新信息列表 ========== */
        .news-list {
            display: grid;
            gap: var(--spacing-sm);
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-md);
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            transition: all var(--transition-base);
        }

        .news-item:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-card);
            transform: translateX(3px);
        }

        .news-item-thumb {
            flex-shrink: 0;
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-default);
        }

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

        .news-item-content {
            flex: 1;
            min-width: 0;
        }

        .news-item-content h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 4px;
            letter-spacing: 0.02em;
            line-height: 1.4;
        }

        .news-item-content h5 a {
            transition: color var(--transition-fast);
        }

        .news-item-content h5 a:hover {
            color: var(--accent-cyan);
        }

        .news-item-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .news-item-meta .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(0, 198, 255, 0.06);
            color: var(--accent-cyan);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 50px;
            letter-spacing: 0.04em;
        }

        .news-empty {
            text-align: center;
            padding: var(--spacing-xl);
            color: var(--text-weak);
            font-size: 0.95rem;
            background: var(--bg-card);
            border: 1px dashed var(--border-default);
            border-radius: var(--radius-lg);
        }

        @media (max-width: 520px) {
            .news-item {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .news-item-thumb {
                width: 100%;
                height: 140px;
            }
        }

        /* ========== SECTION: 特色优势 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: rgba(0, 198, 255, 0.08);
            border: 1px solid rgba(0, 198, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
            color: var(--accent-cyan);
        }

        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }

        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== SECTION: FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--spacing-md);
            font-weight: 600;
            font-size: 0.98rem;
            color: #ffffff;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: all var(--transition-fast);
            color: var(--text-weak);
        }

        .faq-item.open .faq-arrow {
            background: rgba(0, 198, 255, 0.12);
            color: var(--accent-cyan);
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ========== SECTION: CTA ========== */
        .cta-section {
            position: relative;
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            text-align: center;
            padding: var(--spacing-2xl) 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 198, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .cta-content h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.04em;
        }

        .cta-content p {
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            font-size: 0.95rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-default);
            padding: var(--spacing-xl) 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .footer-logo {
            font-family: var(--font-display);
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.05em;
            margin-bottom: var(--spacing-xs);
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-weak);
            line-height: 1.6;
        }

        .footer-links h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-secondary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }

        .footer-links ul {
            display: grid;
            gap: 6px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-default);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-weak);
            transition: color var(--transition-fast);
        }

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

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

        /* ========== DIVIDER ========== */
        .divider {
            border: none;
            height: 1px;
            background: var(--border-default);
            margin: 0;
        }

        /* ========== FOCUS VISIBLE GLOBAL ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        /* ========== SCROLL TOP BUTTON ========== */
        .scroll-top-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 900;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .scroll-top-btn.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .scroll-top-btn:hover {
            background: var(--accent-cyan);
            color: #0b0f19;
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow-cyan);
        }

        @media (max-width: 520px) {
            .scroll-top-btn {
                bottom: 16px;
                right: 16px;
                width: 38px;
                height: 38px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #080c14;
            --bg-secondary: #0d1220;
            --bg-card: #111827;
            --bg-elevated: #161d2e;
            --bg-hover: #1a2238;
            --text-primary: #e2e6ef;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --accent: #0ea5e9;
            --accent-glow: #38bdf8;
            --accent-dim: #0369a1;
            --warning: #f59e0b;
            --warning-glow: #fbbf24;
            --danger: #ef4444;
            --danger-glow: #f87171;
            --success: #10b981;
            --success-glow: #34d399;
            --border: #1e293b;
            --border-light: #263348;
            --border-accent: #0c4a6e;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 20px rgba(14,165,233,0.15);
            --shadow-glow-strong: 0 0 40px rgba(14,165,233,0.25);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --container-pad: 24px;
            --nav-height: 64px;
        }

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

        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
        ul, ol { list-style: none; }
        button { cursor: pointer; border: none; background: none; font-family: inherit; }
        input { font-family: inherit; }

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

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8,12,20,0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            transition: all var(--transition-base);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: center;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
            height: 100%;
            position: relative;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-left { justify-content: flex-end; padding-right: 10px; }
        .nav-right { justify-content: flex-start; padding-left: 10px; }

        .nav-logo-wrap {
            flex-shrink: 0;
            padding: 0 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover { color: var(--accent-glow); }

        .logo-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent-glow), 0 0 20px rgba(14,165,233,0.5);
            animation: logoPulse 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes logoPulse {
            0%, 100% { box-shadow: 0 0 10px var(--accent-glow), 0 0 20px rgba(14,165,233,0.5); }
            50% { box-shadow: 0 0 18px var(--accent-glow), 0 0 36px rgba(14,165,233,0.7); }
        }

        .nav-link, .nav-link-cat {
            font-size: 0.9rem;
            font-weight: 500;
            padding: 7px 15px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            color: var(--text-secondary);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover, .nav-link-cat:hover {
            color: var(--text-primary);
            background: var(--bg-hover);
        }
        .nav-link.active, .nav-link-cat.active {
            color: var(--accent-glow);
            background: rgba(14,165,233,0.08);
            font-weight: 600;
        }
        .nav-link-cat {
            position: relative;
        }
        .nav-link-cat::after {
            content: '';
            position: absolute;
            right: 4px;
            top: 4px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        .nav-link-cat.active::after {
            opacity: 1;
            box-shadow: 0 0 6px var(--accent-glow);
        }

        /* 移动端菜单按钮 */
        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            position: absolute;
            left: var(--container-pad);
            top: 50%;
            transform: translateY(-50%);
        }
        .nav-mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .nav-mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-mobile-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* 移动端折叠菜单 */
        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: rgba(8,12,20,0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 16px var(--container-pad);
            flex-direction: column;
            gap: 4px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-smooth);
        }
        .nav-mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: all;
        }
        .nav-mobile-menu a {
            display: block;
            padding: 13px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .nav-mobile-menu a:hover,
        .nav-mobile-menu a.active {
            color: var(--text-primary);
            background: var(--bg-hover);
        }
        .nav-mobile-menu a.active {
            color: var(--accent-glow);
            background: rgba(14,165,233,0.08);
            font-weight: 600;
        }

        /* ===== PAGE BANNER ===== */
        .page-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            background: var(--bg-secondary);
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }
        .page-banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            filter: saturate(0.6) brightness(0.7);
        }
        .page-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,12,20,0.3) 0%, rgba(8,12,20,0.85) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            padding-top: 50px;
            padding-bottom: 50px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover { color: var(--accent-glow); }
        .breadcrumb .sep { color: var(--border-light); }
        .breadcrumb .current { color: var(--accent-glow); font-weight: 500; }

        .page-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.6;
        }
        .banner-badge-row {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 18px;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
        }
        .banner-badge .dot-indicator {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .dot-indicator.online { background: var(--success); box-shadow: 0 0 6px var(--success-glow); }
        .dot-indicator.degraded { background: var(--warning); box-shadow: 0 0 6px var(--warning-glow); }

        /* ===== SECTION COMMON ===== */
        .section {
            padding: 64px 0;
        }
        .section-header {
            margin-bottom: 40px;
            text-align: center;
        }
        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            background: rgba(14,165,233,0.1);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
            border: 1px solid var(--border-accent);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
            margin-bottom: 10px;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 0.98rem;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ===== NODE STATUS PANEL ===== */
        .node-panel-wrapper {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .node-panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            flex-wrap: wrap;
            gap: 10px;
        }
        .node-panel-header h3 {
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .node-panel-header h3 .live-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px var(--success-glow);
            animation: livePulse 1.5s ease-in-out infinite;
        }
        @keyframes livePulse {
            0%, 100% { box-shadow: 0 0 8px var(--success-glow); }
            50% { box-shadow: 0 0 16px var(--success-glow), 0 0 24px rgba(16,185,129,0.4); }
        }
        .refresh-time {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }
        .node-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .node-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .node-table th {
            text-align: left;
            padding: 14px 16px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        .node-table td {
            padding: 15px 16px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
            white-space: nowrap;
            transition: background var(--transition-fast);
        }
        .node-table tbody tr {
            transition: all var(--transition-fast);
        }
        .node-table tbody tr:hover {
            background: var(--bg-hover);
        }
        .node-table tbody tr:last-child td {
            border-bottom: none;
        }
        .node-name {
            font-weight: 600;
            color: var(--text-primary);
        }
        .node-region {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .status-badge.online {
            background: rgba(16,185,129,0.12);
            color: var(--success-glow);
            border: 1px solid rgba(16,185,129,0.3);
        }
        .status-badge.degraded {
            background: rgba(245,158,11,0.12);
            color: var(--warning-glow);
            border: 1px solid rgba(245,158,11,0.3);
        }
        .status-badge.offline {
            background: rgba(239,68,68,0.12);
            color: var(--danger-glow);
            border: 1px solid rgba(239,68,68,0.3);
        }
        .status-badge .status-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
        }
        .status-dot.online { background: var(--success); }
        .status-dot.degraded { background: var(--warning); }
        .status-dot.offline { background: var(--danger); }
        .latency-val {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--accent-glow);
        }
        .load-bar-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .load-bar {
            width: 80px;
            height: 6px;
            background: var(--bg-elevated);
            border-radius: 3px;
            overflow: hidden;
        }
        .load-bar-fill {
            height: 100%;
            border-radius: 3px;
            transition: width var(--transition-smooth);
        }
        .load-bar-fill.low { background: var(--success); }
        .load-bar-fill.medium { background: var(--warning); }
        .load-bar-fill.high { background: var(--danger); }

        /* ===== ROUTE CARDS ===== */
        .route-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .route-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .route-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-dim), var(--accent), var(--accent-glow));
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .route-card:hover {
            border-color: var(--border-accent);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .route-card:hover::before { opacity: 1; }
        .route-card-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .route-card-type {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .route-card-type.recommended {
            background: rgba(14,165,233,0.15);
            color: var(--accent-glow);
            border: 1px solid rgba(14,165,233,0.3);
        }
        .route-card-type.secure {
            background: rgba(16,185,129,0.12);
            color: var(--success-glow);
            border: 1px solid rgba(16,185,129,0.3);
        }
        .route-card-type.fast {
            background: rgba(245,158,11,0.12);
            color: var(--warning-glow);
            border: 1px solid rgba(245,158,11,0.3);
        }
        .route-card-type.convenient {
            background: rgba(139,92,246,0.12);
            color: #a78bfa;
            border: 1px solid rgba(139,92,246,0.3);
        }
        .route-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .route-card .route-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.5;
        }
        .route-stats {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .route-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .route-stat-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }
        .route-stat-val {
            font-size: 1rem;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--text-primary);
        }
        .route-stat-val.green { color: var(--success-glow); }
        .route-stat-val.blue { color: var(--accent-glow); }

        /* ===== ACCESS POINTS SECTION ===== */
        .access-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .access-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .access-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .access-card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .access-card-body {
            padding: 18px;
        }
        .access-card-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .access-card-body p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .access-card-meta {
            display: flex;
            gap: 12px;
            margin-top: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        /* ===== SECURITY INFO ===== */
        .security-panel {
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }
        .security-panel img {
            width: 100%;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
        }
        .security-info h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .security-info p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .security-checklist {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .security-checklist li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-primary);
        }
        .check-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(16,185,129,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--success-glow);
            font-size: 0.7rem;
            font-weight: 700;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent-glow);
            background: var(--bg-hover);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
            margin-left: 12px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(14,165,233,0.15);
            color: var(--accent-glow);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            text-align: center;
            padding: 60px 0;
        }
        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            text-align: center;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            box-shadow: 0 2px 12px rgba(14,165,233,0.25);
        }
        .btn-primary:hover {
            background: var(--accent-glow);
            border-color: var(--accent-glow);
            box-shadow: 0 4px 24px rgba(14,165,233,0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent-glow);
            background: rgba(14,165,233,0.05);
        }
        .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-links h5 {
            font-size: 0.82rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links ul li a:hover {
            color: var(--accent-glow);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .route-grid { grid-template-columns: 1fr 1fr; }
            .access-grid { grid-template-columns: repeat(2, 1fr); }
            .security-panel { grid-template-columns: 1fr; }
            .page-banner h1 { font-size: 2rem; }
            .section { padding: 48px 0; }
        }

        @media (max-width: 768px) {
            .nav-left, .nav-right { display: none; }
            .nav-mobile-toggle { display: flex; }
            .nav-mobile-menu { display: flex; }
            .nav-container { justify-content: center; }
            .nav-logo-wrap { padding: 0; }
            .route-grid { grid-template-columns: 1fr; }
            .access-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .page-banner { min-height: 260px; }
            .page-banner h1 { font-size: 1.6rem; }
            .page-banner .banner-subtitle { font-size: 0.9rem; }
            .section-title { font-size: 1.4rem; }
            .node-panel-header { padding: 12px 16px; }
            .node-panel-header h3 { font-size: 0.95rem; }
            .security-panel { padding: 20px; }
            .cta-section h2 { font-size: 1.3rem; }
            .btn { padding: 11px 22px; font-size: 0.88rem; }
        }

        @media (max-width: 520px) {
            .page-banner { min-height: 220px; }
            .page-banner h1 { font-size: 1.4rem; }
            .banner-badge-row { gap: 6px; }
            .banner-badge { font-size: 0.72rem; padding: 4px 10px; }
            .section { padding: 36px 0; }
            .section-title { font-size: 1.2rem; }
            .route-stats { gap: 12px; }
            .route-card { padding: 16px; }
            .route-card h4 { font-size: 1rem; }
            .btn-group { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .security-panel { padding: 16px; }
        }

/* roulang page: article */
:root {
            --primary: #1e2240;
            --primary-light: #2a2f54;
            --primary-dark: #14182e;
            --accent: #f0a030;
            --accent-glow: rgba(240, 160, 48, 0.25);
            --accent-secondary: #4da6e8;
            --accent-secondary-glow: rgba(77, 166, 232, 0.2);
            --danger: #e8453c;
            --danger-glow: rgba(232, 69, 60, 0.3);
            --success: #2ecc71;
            --success-glow: rgba(46, 204, 113, 0.25);
            --warning: #f7b731;
            --bg-page: #f4f5f9;
            --bg-card: #ffffff;
            --bg-dark-panel: #1a1d30;
            --bg-dark-panel-lift: #222640;
            --text-primary: #1a1d30;
            --text-secondary: #4a4f68;
            --text-weak: #7b809a;
            --text-on-dark: #e8eaf0;
            --text-on-dark-weak: #a0a6be;
            --border-light: #e2e5f0;
            --border-medium: #cdd2e0;
            --border-dark: #3a3f58;
            --shadow-sm: 0 1px 3px rgba(26, 29, 48, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 29, 48, 0.08);
            --shadow-lg: 0 12px 40px rgba(26, 29, 48, 0.12);
            --shadow-xl: 0 20px 60px rgba(26, 29, 48, 0.18);
            --shadow-glow-accent: 0 0 30px rgba(240, 160, 48, 0.15);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --max-width: 1240px;
            --max-width-article: 820px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-page);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-narrow {
            width: 100%;
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .nav-container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            gap: 20px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 34, 64, 0.04);
        }

        .nav-link.active {
            color: var(--accent);
            background: rgba(240, 160, 48, 0.08);
            font-weight: 700;
        }

        .nav-link-cat {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-link-cat:hover {
            color: var(--accent-secondary);
            background: rgba(77, 166, 232, 0.06);
        }

        .nav-link-cat::after {
            content: '';
            position: absolute;
            right: 4px;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 8px var(--success-glow);
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .nav-link-cat:hover::after {
            opacity: 1;
        }

        .nav-logo-wrap {
            flex-shrink: 0;
            padding: 0 28px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.04em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-logo:hover {
            color: var(--accent);
        }

        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 14px var(--accent-glow);
            animation: logoPulse 2.4s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 10px var(--accent-glow);
            }
            50% {
                box-shadow: 0 0 22px rgba(240, 160, 48, 0.5);
            }
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
        }

        .nav-mobile-toggle span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }

        .nav-mobile-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-mobile-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            padding: 16px 24px;
            flex-direction: column;
            gap: 4px;
            z-index: 999;
        }

        .nav-mobile-menu.active {
            display: flex;
        }

        .nav-mobile-menu .nav-link,
        .nav-mobile-menu .nav-link-cat {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(20, 24, 46, 0.55) 0%,
                    rgba(26, 29, 48, 0.78) 40%,
                    rgba(26, 29, 48, 0.9) 100%);
            z-index: 1;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-secondary), var(--accent));
            opacity: 0.8;
            z-index: 3;
        }

        .article-banner-inner {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 48px 24px;
        }

        .article-banner-category {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(240, 160, 48, 0.15);
            border: 1px solid rgba(240, 160, 48, 0.3);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 16px;
            backdrop-filter: blur(6px);
        }

        .article-banner-category .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 10px var(--success-glow);
            animation: statusBlink 2s ease-in-out infinite;
        }

        @keyframes statusBlink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        .article-banner-title {
            font-size: 2rem;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.3;
            letter-spacing: 0.03em;
            margin: 0 0 12px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
        }

        .article-banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.88rem;
            color: var(--text-on-dark-weak);
            font-weight: 500;
        }

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

        .article-banner-meta .meta-icon {
            font-size: 0.85rem;
            color: var(--accent);
            opacity: 0.8;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-weak);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .separator {
            color: var(--border-medium);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* ========== MAIN ARTICLE AREA ========== */
        .article-main-section {
            padding: 48px 0;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        .article-content-area {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .article-featured-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }

        .article-body {
            padding: 36px 40px 48px;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            margin: 32px 0 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: 0.02em;
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin: 24px 0 10px;
            letter-spacing: 0.02em;
        }

        .article-body p {
            margin-bottom: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            font-size: 1.02rem;
        }

        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 20px;
        }

        .article-body ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .article-body blockquote {
            margin: 24px 0;
            padding: 18px 24px;
            background: rgba(30, 34, 64, 0.03);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 1.02rem;
        }

        .article-body strong {
            color: var(--text-primary);
            font-weight: 700;
        }

        .article-body a {
            color: var(--accent-secondary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--accent);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--shadow-md);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }

        .sidebar-panel {
            background: var(--bg-dark-panel);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-dark);
        }

        .sidebar-panel-title {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-panel-title .indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 10px var(--success-glow);
        }

        .info-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.88rem;
        }

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

        .info-label {
            color: var(--text-on-dark-weak);
            font-weight: 500;
            font-size: 0.82rem;
        }

        .info-value {
            color: var(--text-on-dark);
            font-weight: 700;
            font-family: var(--font-mono);
            font-size: 0.85rem;
            text-align: right;
        }

        .info-value.highlight {
            color: var(--accent);
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 4px;
        }

        .tag-item {
            display: inline-block;
            padding: 5px 12px;
            background: rgba(240, 160, 48, 0.1);
            border: 1px solid rgba(240, 160, 48, 0.2);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
        }

        .tag-item:hover {
            background: rgba(240, 160, 48, 0.2);
            border-color: rgba(240, 160, 48, 0.4);
        }

        /* Sidebar CTA card */
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-dark);
            position: relative;
            overflow: hidden;
        }

        .sidebar-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(240, 160, 48, 0.08);
            pointer-events: none;
        }

        .sidebar-cta-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .sidebar-cta h4 {
            color: #ffffff;
            font-weight: 800;
            font-size: 1.05rem;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .sidebar-cta p {
            color: var(--text-on-dark-weak);
            font-size: 0.85rem;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .btn-sidebar {
            display: inline-block;
            padding: 10px 24px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.88rem;
            border-radius: 50px;
            letter-spacing: 0.04em;
            transition: all var(--transition-base);
            position: relative;
            z-index: 1;
        }

        .btn-sidebar:hover {
            background: #f8b840;
            box-shadow: 0 6px 24px var(--accent-glow);
            transform: translateY(-2px);
        }

        /* ========== DATA PANEL SECTION ========== */
        .data-panel-section {
            padding: 40px 0 56px;
        }

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

        .data-panel-card {
            background: var(--bg-dark-panel);
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid var(--border-dark);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .data-panel-card:hover {
            background: var(--bg-dark-panel-lift);
            border-color: rgba(240, 160, 48, 0.25);
            box-shadow: var(--shadow-glow-accent);
            transform: translateY(-2px);
        }

        .data-panel-card .dp-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 12px;
            opacity: 0.9;
        }

        .data-panel-card .dp-value {
            font-size: 2rem;
            font-weight: 900;
            color: #ffffff;
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }

        .data-panel-card .dp-label {
            font-size: 0.82rem;
            color: var(--text-on-dark-weak);
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .data-panel-card .dp-status {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 12px var(--success-glow);
        }

        /* ========== RELATED ARTICLES ========== */
        .related-section {
            padding: 40px 0 60px;
        }

        .section-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 32px;
        }

        .section-header .section-line {
            width: 40px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-header h2 {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.03em;
        }

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

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            border: 1px solid var(--border-light);
        }

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

        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }

        .related-card-body {
            padding: 18px 20px 22px;
        }

        .related-card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .related-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-title a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .related-card-title a:hover {
            color: var(--accent);
        }

        .related-card-date {
            font-size: 0.8rem;
            color: var(--text-weak);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 48px 0 60px;
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .faq-item {
            background: var(--bg-page);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
            cursor: default;
        }

        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
            background: #fdfaf5;
        }

        .faq-item h4 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .faq-item h4 .faq-q {
            color: var(--accent);
            font-weight: 900;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
            padding-left: 24px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 56px 0;
            text-align: center;
        }

        .cta-card {
            background: var(--primary-dark);
            border-radius: var(--radius-2xl);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(20, 24, 46, 0.75);
            z-index: 1;
        }

        .cta-card-inner {
            position: relative;
            z-index: 2;
        }

        .cta-card h2 {
            font-size: 1.7rem;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .cta-card p {
            color: var(--text-on-dark-weak);
            font-size: 1.02rem;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-primary {
            display: inline-block;
            padding: 14px 36px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1rem;
            border-radius: 50px;
            letter-spacing: 0.05em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 20px rgba(240, 160, 48, 0.3);
        }

        .btn-cta-primary:hover {
            background: #f8b840;
            box-shadow: 0 8px 32px rgba(240, 160, 48, 0.45);
            transform: translateY(-3px);
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-area {
            text-align: center;
            padding: 80px 24px;
        }

        .not-found-icon {
            font-size: 4rem;
            color: var(--border-medium);
            margin-bottom: 20px;
        }

        .not-found-area h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .not-found-area p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .btn-back-home {
            display: inline-block;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            border-radius: 50px;
            letter-spacing: 0.04em;
            transition: all var(--transition-base);
        }

        .btn-back-home:hover {
            background: #f8b840;
            box-shadow: 0 6px 24px var(--accent-glow);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-on-dark);
            padding: 48px 0 24px;
            border-top: 3px solid rgba(240, 160, 48, 0.3);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-logo {
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .footer-brand p {
            color: var(--text-on-dark-weak);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0;
        }

        .footer-links h5 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            color: var(--text-on-dark-weak);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: var(--text-on-dark-weak);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .sidebar-cta {
                grid-column: 1 / -1;
            }
            .data-panel-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                padding: 24px 24px 36px;
            }
            .article-banner-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .nav-logo-wrap {
                padding: 0;
            }
            .nav-container {
                justify-content: center;
                gap: 0;
            }
            .article-banner {
                min-height: 200px;
            }
            .article-banner-title {
                font-size: 1.35rem;
            }
            .article-banner-meta {
                font-size: 0.78rem;
                gap: 10px;
            }
            .article-body {
                padding: 20px 18px 28px;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body p {
                font-size: 0.95rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .data-panel-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-panel-card {
                padding: 16px;
            }
            .data-panel-card .dp-value {
                font-size: 1.5rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-card {
                padding: 36px 20px;
            }
            .cta-card h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header h2 {
                font-size: 1.2rem;
            }
            .article-banner-inner {
                padding: 32px 16px;
            }
        }

        @media (max-width: 520px) {
            .data-panel-grid {
                grid-template-columns: 1fr;
            }
            .article-banner-title {
                font-size: 1.15rem;
            }
            .article-banner-category {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .article-body {
                padding: 16px 12px 24px;
            }
            .faq-item {
                padding: 14px 16px;
            }
            .faq-item h4 {
                font-size: 0.88rem;
            }
            .cta-card h2 {
                font-size: 1.15rem;
            }
            .btn-cta-primary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .container,
            .container-narrow {
                padding: 0 14px;
            }
        }

        @media (max-width: 380px) {
            .nav-logo {
                font-size: 0.95rem;
            }
            .article-banner-title {
                font-size: 1rem;
            }
            .article-banner-meta {
                font-size: 0.7rem;
            }
        }