/* roulang page: index */
:root {
            --primary: #0B1210;
            --primary-dark: #060A08;
            --accent: #E8FF46;
            --accent-orange: #FF5C39;
            --accent-mint: #39D9C8;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-card-dark: #111A16;
            --text-primary: #1A1F1D;
            --text-secondary: #5B6661;
            --text-light: #F4F6F5;
            --text-dark-muted: rgba(255,255,255,0.55);
            --border-subtle: rgba(0,0,0,0.08);
            --border-dark: rgba(232,255,70,0.12);
            --border-dark-mint: rgba(57,217,200,0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 6px 20px rgba(0,0,0,0.04);
            --shadow-md: 0 12px 40px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
            --transition: 0.25s ease;
            --transition-fast: 0.15s ease;
            --sidebar-width: 260px;
            --sidebar-collapsed: 72px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-orange);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: inherit;
            transition: all var(--transition);
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 40px;
        }
        .section-dark .section-subtitle {
            color: var(--text-dark-muted);
        }
        .grid {
            display: grid;
            gap: 24px;
        }
        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .grid-5 {
            grid-template-columns: repeat(5, 1fr);
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--accent-orange);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(255,92,57,0.3);
        }
        .btn-primary:hover {
            background: #e84d2e;
            box-shadow: 0 6px 24px rgba(255,92,57,0.4);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255,92,57,0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: #0B1210;
            box-shadow: 0 4px 16px rgba(232,255,70,0.25);
        }
        .btn-accent:hover {
            background: #d8ef35;
            box-shadow: 0 6px 24px rgba(232,255,70,0.35);
            color: #0B1210;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
        }
        .btn-outline:hover {
            background: rgba(11,18,16,0.06);
            border-color: rgba(11,18,16,0.2);
            color: var(--text-primary);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255,255,255,0.3);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.5);
            color: var(--text-light);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(232,255,70,0.15);
            color: var(--text-primary);
            border: 1px solid rgba(232,255,70,0.3);
        }
        .badge-dark {
            background: rgba(232,255,70,0.12);
            color: var(--accent);
            border-color: rgba(232,255,70,0.2);
        }
        .badge-orange {
            background: rgba(255,92,57,0.1);
            color: var(--accent-orange);
            border-color: rgba(255,92,57,0.25);
        }
        .badge-mint {
            background: rgba(57,217,200,0.1);
            color: #2bb5a8;
            border-color: rgba(57,217,200,0.25);
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .card-dark {
            background: var(--bg-card-dark);
            border-color: rgba(255,255,255,0.06);
            box-shadow: none;
        }
        .card-dark:hover {
            box-shadow: 0 8px 30px rgba(0,0,0,0.3);
            border-color: rgba(232,255,70,0.15);
        }
        .card-body {
            padding: 24px;
        }
        .card-image {
            aspect-ratio: 16/9;
            background-color: #e8eceb;
            background-size: cover;
            background-position: center;
        }
        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .card-dark .card-text {
            color: var(--text-dark-muted);
        }
        .card-link {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-orange);
            margin-top: 12px;
        }
        .card-link:hover {
            color: #e84d2e;
        }

        /* App Shell Sidebar */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--primary);
            color: var(--text-light);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            overflow-y: auto;
            overflow-x: hidden;
            transition: width var(--transition), transform var(--transition);
            box-shadow: 4px 0 24px rgba(0,0,0,0.15);
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 24px 20px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            flex-shrink: 0;
        }
        .sidebar-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            font-family: var(--font-en);
        }
        .sidebar-logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
            color: #ffffff;
        }
        .sidebar-logo-text span {
            color: var(--accent);
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
        }
        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 4px;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .sidebar-nav-item:hover {
            background: rgba(255,255,255,0.08);
            color: #ffffff;
        }
        .sidebar-nav-item.active {
            background: rgba(232,255,70,0.08);
            color: var(--accent);
        }
        .sidebar-nav-item.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--accent);
            border-radius: 0 2px 2px 0;
        }
        .sidebar-nav-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
        }
        .sidebar-badge {
            margin-left: auto;
            font-size: 0.75rem;
            background: rgba(232,255,70,0.15);
            color: var(--accent);
            padding: 2px 8px;
            border-radius: 12px;
            white-space: nowrap;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.75rem;
            color: rgba(255,255,255,0.5);
            flex-shrink: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .sidebar-footer .dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            margin-right: 6px;
            vertical-align: middle;
        }

        /* Main content */
        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .sub-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 500;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 24px;
            align-items: center;
            gap: 16px;
            transition: border-color var(--transition);
        }
        .sub-header .hamburger {
            display: block;
            font-size: 1.4rem;
            background: none;
            border: none;
            color: var(--text-primary);
            padding: 4px;
            border-radius: 6px;
        }
        .sub-header .hamburger:hover {
            background: rgba(0,0,0,0.06);
        }
        .sub-header .mobile-logo {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            flex-shrink: 0;
        }
        .sub-header .mobile-logo span {
            color: var(--text-primary);
        }

        /* Mobile drawer overlay */
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
        }
        .drawer-overlay.visible {
            display: block;
        }

        /* Hero Section - White paper style */
        .hero-section {
            background: var(--primary);
            color: var(--text-light);
            padding: 64px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/34a460376572231d.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(160deg, rgba(11,18,16,0.75) 0%, rgba(11,18,16,0.9) 50%, rgba(11,18,16,0.95) 100%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: clamp(1.8rem, 3.8vw, 3.1rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 700px;
        }
        .hero-title .highlight {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: 1rem;
            line-height: 1.85;
            color: rgba(255,255,255,0.75);
            max-width: 620px;
            margin-bottom: 32px;
        }
        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 40px;
        }
        .hero-whitepaper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius);
            padding: 32px;
            backdrop-filter: blur(4px);
        }
        .whitepaper-cover {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .whitepaper-cover-img {
            aspect-ratio: 4/3;
            border-radius: 12px;
            background-image: url('/assets/images/626607341bd92797.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .whitepaper-cover-img::after {
            content: '华体会赛事观察季报';
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(11,18,16,0.85);
            padding: 10px 16px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent);
        }
        .whitepaper-toc {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            line-height: 2;
        }
        .whitepaper-toc strong {
            color: var(--accent);
            display: block;
            font-size: 0.95rem;
            margin-bottom: 8px;
        }
        .whitepaper-form {
            background: rgba(11,18,16,0.6);
            border: 1px solid rgba(232,255,70,0.15);
            border-radius: 12px;
            padding: 20px 24px;
        }
        .whitepaper-form label {
            display: block;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .whitepaper-form input,
        .whitepaper-form textarea {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.06);
            color: #ffffff;
            font-size: 0.9rem;
            font-family: var(--font-cn);
            margin-bottom: 14px;
            transition: all var(--transition);
        }
        .whitepaper-form input::placeholder,
        .whitepaper-form textarea::placeholder {
            color: rgba(255,255,255,0.4);
        }
        .whitepaper-form input:focus,
        .whitepaper-form textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(255,92,57,0.2);
            outline: none;
        }

        /* Service Matrix */
        .service-card {
            padding: 28px 24px;
            border-radius: var(--radius);
            background: var(--bg-white);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(232,255,70,0.4);
        }
        .service-card .icon-box {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 4px;
        }
        .service-card .icon-box.mint {
            background: rgba(57,217,200,0.1);
            color: #2bb5a8;
        }
        .service-card .icon-box.orange {
            background: rgba(255,92,57,0.1);
            color: var(--accent-orange);
        }
        .service-card .icon-box.accent {
            background: rgba(232,255,70,0.2);
            color: #7a8c1f;
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.4;
        }
        .service-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        /* Stats / data bar */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card-dark);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.06);
            transition: all var(--transition);
        }
        .stat-card:hover {
            border-color: rgba(232,255,70,0.2);
            box-shadow: 0 8px 30px rgba(0,0,0,0.25);
        }
        .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            font-family: var(--font-en);
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-top: 8px;
        }

        /* Process steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            padding: 24px 20px;
            position: relative;
            counter-increment: step;
            transition: all var(--transition);
        }
        .process-step:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
            border-color: rgba(232,255,70,0.3);
        }
        .process-step::before {
            content: counter(step);
            display: inline-block;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            line-height: 32px;
            text-align: center;
            margin-bottom: 12px;
            font-family: var(--font-en);
        }
        .process-step h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Topic wall */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            background: var(--bg-white);
            transition: all var(--transition);
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .topic-card-img {
            aspect-ratio: 16/10;
            background-size: cover;
            background-position: center;
        }
        .topic-card-body {
            padding: 20px;
        }
        .topic-card-tag {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--accent-orange);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .topic-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .topic-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Data snapshot */
        .snapshot-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
        }
        .snapshot-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-subtle);
            flex-wrap: wrap;
            gap: 12px;
        }
        .snapshot-header h3 {
            font-size: 1.1rem;
            font-weight: 700;
        }
        .snapshot-table {
            display: grid;
            grid-template-columns: 1fr;
        }
        .snapshot-row {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            padding: 12px 24px;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--border-subtle);
            align-items: center;
            gap: 8px;
            transition: background var(--transition-fast);
        }
        .snapshot-row:last-child {
            border-bottom: none;
        }
        .snapshot-row:hover {
            background: rgba(232,255,70,0.06);
        }
        .snapshot-row.header {
            background: rgba(11,18,16,0.04);
            font-weight: 700;
            font-size: 0.8rem;
            color: var(--text-secondary);
            letter-spacing: 0.03em;
        }
        .snapshot-row .rank {
            font-weight: 700;
            font-family: var(--font-en);
            color: var(--accent-orange);
            font-size: 0.9rem;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .news-thumb {
            aspect-ratio: 16/10;
            background-size: cover;
            background-position: center;
        }
        .news-body {
            padding: 20px 20px 20px 0;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .news-item h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Brand intro */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: start;
        }
        .brand-intro-side {
            position: sticky;
            top: 32px;
        }
        .brand-intro-side h2 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .brand-intro-side .tag-line {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .brand-intro-main p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.95;
            margin-bottom: 20px;
            text-align: justify;
        }
        .brand-intro-main p strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* Partners */
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .partner-card {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            padding: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .partner-card:hover {
            border-color: rgba(232,255,70,0.4);
            box-shadow: var(--shadow-sm);
            color: var(--text-primary);
        }
        .partner-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(11,18,16,0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--text-secondary);
        }

        /* User interaction */
        .comment-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .comment-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .comment-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .comment-user {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .comment-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(232,255,70,0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
            color: var(--primary);
        }
        .comment-name {
            font-size: 0.85rem;
            font-weight: 600;
        }
        .comment-time {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }
        .comment-text {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232,255,70,0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            gap: 12px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 1.1rem;
            transition: transform var(--transition);
            color: var(--accent-orange);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 16px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* Trust bar */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .trust-item {
            text-align: center;
            padding: 20px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            transition: all var(--transition);
        }
        .trust-item:hover {
            border-color: rgba(232,255,70,0.25);
            background: rgba(255,255,255,0.06);
        }
        .trust-item .t-icon {
            font-size: 1.6rem;
            margin-bottom: 10px;
            display: block;
        }
        .trust-item h3 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-light);
        }
        .trust-item p {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.5;
        }

        /* Contact / CTA */
        .contact-section {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .contact-info h2 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .contact-info p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .contact-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-bottom: 16px;
        }
        .contact-form label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            background: var(--bg-light);
            font-size: 0.9rem;
            font-family: var(--font-cn);
            transition: all var(--transition);
            color: var(--text-primary);
        }
        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(255,92,57,0.15);
            outline: none;
            background: var(--bg-white);
        }
        .contact-form textarea {
            min-height: 100px;
            resize: vertical;
            margin-bottom: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.82rem;
            line-height: 1.8;
            color: rgba(255,255,255,0.55);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.55);
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.75rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.55);
            margin-right: 12px;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar {
                width: var(--sidebar-collapsed);
            }
            .sidebar-logo-text {
                display: none;
            }
            .sidebar-logo-icon {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
            .sidebar-nav-item {
                justify-content: center;
                padding: 10px;
            }
            .sidebar-nav-item .nav-text,
            .sidebar-nav-item .sidebar-badge {
                display: none;
            }
            .sidebar-footer {
                display: none;
            }
            .sidebar-logo {
                justify-content: center;
                padding: 16px 8px;
            }
            .main-content {
                margin-left: var(--sidebar-collapsed);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comment-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-intro {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .brand-intro-side {
                position: static;
            }
            .contact-section {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 32px;
            }
            .hero-whitepaper {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px;
            }
        }
        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
            }
            .sidebar.visible {
                transform: translateX(0);
            }
            .sidebar-logo-text {
                display: block;
            }
            .sidebar-logo-icon {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .sidebar-nav-item {
                justify-content: flex-start;
                padding: 10px 16px;
            }
            .sidebar-nav-item .nav-text,
            .sidebar-nav-item .sidebar-badge {
                display: inline-block;
            }
            .sidebar-footer {
                display: block;
            }
            .sidebar-logo {
                justify-content: flex-start;
                padding: 24px 20px 20px;
            }
            .main-content {
                margin-left: 0;
            }
            .sub-header {
                display: flex;
            }
            .section {
                padding: 56px 0;
            }
            .grid-3,
            .grid-4,
            .grid-5 {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-item {
                grid-template-columns: 1fr;
            }
            .news-body {
                padding: 20px;
            }
            .snapshot-row {
                grid-template-columns: 2fr 1fr 1fr;
                font-size: 0.75rem;
                padding: 10px 16px;
            }
            .snapshot-row.header {
                display: none;
            }
            .hero-title {
                font-size: clamp(1.5rem, 5vw, 2.2rem);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-inner {
                padding: 0 16px;
            }
            .hero-whitepaper {
                padding: 16px;
            }
            .whitepaper-form {
                padding: 16px;
            }
            .section {
                padding: 40px 0;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-5 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .comment-list {
                grid-template-columns: 1fr;
            }
            .partners-grid {
                grid-template-columns: 1fr 1fr;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .contact-form .form-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .contact-section {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .hero-cta-row {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
            .snapshot-row {
                grid-template-columns: 1.5fr 1fr 1fr;
                font-size: 0.7rem;
                padding: 8px 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B1210;
            --primary-dark: #060A08;
            --accent: #E8FF46;
            --accent-orange: #FF5C39;
            --accent-mint: #39D9C8;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-card-dark: #111A16;
            --text-primary: #1A1F1D;
            --text-secondary: #5B6661;
            --text-light: #F4F6F5;
            --text-dark-muted: rgba(255, 255, 255, 0.55);
            --border-subtle: rgba(0, 0, 0, 0.08);
            --border-dark: rgba(232, 255, 70, 0.12);
            --border-dark-mint: rgba(57, 217, 200, 0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
            --transition: 0.25s ease;
            --transition-fast: 0.15s ease;
            --sidebar-width: 260px;
            --sidebar-collapsed: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: inherit;
            transition: all var(--transition);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 64px 0;
            position: relative;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-tight {
            padding: 44px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 40px;
        }
        .section-dark .section-subtitle {
            color: var(--text-dark-muted);
        }

        .grid {
            display: grid;
            gap: 24px;
        }
        .grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--accent-orange);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(255, 92, 57, 0.3);
        }
        .btn-primary:hover {
            background: #e84d2e;
            box-shadow: 0 6px 24px rgba(255, 92, 57, 0.4);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255, 92, 57, 0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: #0B1210;
            box-shadow: 0 4px 16px rgba(232, 255, 70, 0.25);
        }
        .btn-accent:hover {
            background: #d8ef35;
            box-shadow: 0 6px 24px rgba(232, 255, 70, 0.35);
            color: #0B1210;
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
        }
        .btn-outline:hover {
            background: rgba(11, 18, 16, 0.06);
            border-color: rgba(11, 18, 16, 0.2);
            color: var(--text-primary);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-light);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.6;
        }
        .badge-accent {
            background: var(--accent);
            color: var(--primary);
        }
        .badge-orange {
            background: var(--accent-orange);
            color: #fff;
        }
        .badge-mint {
            background: var(--accent-mint);
            color: var(--primary);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }
        .badge-dark-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-light);
        }

        /* App Shell Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--primary-dark);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
        }

        .sidebar-header {
            padding: 28px 20px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-logo span {
            font-size: 0.7rem;
            background: var(--accent-orange);
            color: #fff;
            padding: 2px 8px;
            border-radius: 999px;
            font-weight: 600;
            letter-spacing: 0.05em;
        }

        .sidebar-nav {
            flex: 1;
            padding: 20px 0;
            overflow-y: auto;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            color: var(--text-dark-muted);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            transition: all var(--transition);
            border-left: 4px solid transparent;
        }
        .sidebar-nav-item:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
        }
        .sidebar-nav-item.active {
            color: var(--accent);
            background: rgba(232, 255, 70, 0.06);
            border-left-color: var(--accent);
        }
        .sidebar-nav-item.active .sidebar-badge {
            background: var(--accent);
            color: var(--primary);
        }
        .sidebar-nav-icon {
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
        }
        .nav-text {
            flex: 1;
        }
        .sidebar-badge {
            font-size: 0.65rem;
            padding: 2px 8px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-dark-muted);
            font-weight: 600;
            transition: all var(--transition);
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .sidebar-footer p {
            line-height: 1.6;
        }
        .sidebar-data-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 6px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.3);
            }
        }

        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
        }

        .sub-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            gap: 16px;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-orange);
        }
        .breadcrumb-sep {
            color: var(--border-subtle);
        }
        .sub-header-actions {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sub-header-link {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 12px;
            border-radius: var(--radius-xs);
            transition: all var(--transition);
        }
        .sub-header-link:hover {
            background: rgba(11, 18, 16, 0.06);
            color: var(--text-primary);
        }
        .sub-header-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 999px;
            padding: 6px 14px;
            gap: 8px;
            border: 1px solid var(--border-subtle);
        }
        .sub-header-search input {
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: 0.85rem;
            color: var(--text-primary);
            outline: none;
            width: 140px;
        }
        .sub-header-search input::placeholder {
            color: var(--text-secondary);
        }
        .sub-header-search .search-icon {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 6px;
            cursor: pointer;
            transition: color var(--transition);
        }
        .mobile-toggle:hover {
            color: var(--accent-orange);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .sidebar-overlay.active {
            opacity: 1;
        }

        /* Page specific styles */
        .data-hero {
            background: var(--primary);
            color: var(--text-light);
            position: relative;
            overflow: hidden;
            padding: 56px 0 48px;
        }
        .data-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                linear-gradient(90deg, rgba(232, 255, 70, 0.03) 1px, transparent 1px),
                linear-gradient(0deg, rgba(232, 255, 70, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
            pointer-events: none;
        }
        .data-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: radial-gradient(ellipse at right, rgba(232, 255, 70, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .data-hero .container {
            position: relative;
            z-index: 1;
        }
        .data-hero h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .data-hero h1 .highlight {
            color: var(--accent);
        }
        .data-hero .hero-desc {
            font-size: 1rem;
            color: var(--text-dark-muted);
            max-width: 620px;
            line-height: 1.85;
            margin-bottom: 20px;
        }
        .data-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-dark-muted);
            align-items: center;
        }
        .data-hero .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .data-hero .meta-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .filter-bar {
            background: var(--bg-white);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            box-shadow: var(--shadow-sm);
        }
        .filter-bar-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .filter-bar .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .filter-tag {
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition);
        }
        .filter-tag:hover {
            background: rgba(232, 255, 70, 0.2);
            color: var(--text-primary);
            border-color: rgba(232, 255, 70, 0.4);
        }
        .filter-tag.active {
            background: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            font-weight: 600;
        }
        .filter-bar .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-bar select {
            padding: 8px 14px;
            border-radius: var(--radius-xs);
            border: 1px solid var(--border-subtle);
            font-family: var(--font-cn);
            font-size: 0.85rem;
            color: var(--text-primary);
            background: var(--bg-white);
            cursor: pointer;
            outline: none;
            transition: border-color var(--transition);
        }
        .filter-bar select:focus {
            border-color: var(--accent-orange);
        }

        .data-table-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .data-table-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(232, 255, 70, 0.3);
        }
        .data-table-header {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .data-table-header h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .data-table-header .table-badge {
            font-size: 0.7rem;
            padding: 3px 10px;
            border-radius: 999px;
            font-weight: 600;
        }
        .data-table-body {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.88rem;
        }
        .data-table th {
            text-align: left;
            padding: 12px 16px;
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            border-bottom: 1px solid var(--border-subtle);
            white-space: nowrap;
            background: var(--bg-light);
        }
        .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-primary);
            white-space: nowrap;
            font-family: var(--font-cn);
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: rgba(232, 255, 70, 0.05);
        }
        .data-table .num {
            font-family: var(--font-en);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .data-table .positive {
            color: #2ecc71;
        }
        .data-table .negative {
            color: var(--accent-orange);
        }
        .data-table .neutral {
            color: var(--text-secondary);
        }
        .data-table .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            font-family: var(--font-en);
            background: var(--bg-light);
            color: var(--text-secondary);
        }
        .data-table .rank-badge.top {
            background: var(--accent);
            color: var(--primary);
        }
        .data-table .rank-badge.second {
            background: rgba(232, 255, 70, 0.5);
            color: var(--primary);
        }
        .data-table .rank-badge.third {
            background: rgba(57, 217, 200, 0.25);
            color: var(--primary);
            border: 1px solid rgba(57, 217, 200, 0.5);
        }

        .data-chart-mini {
            display: flex;
            align-items: flex-end;
            gap: 4px;
            height: 40px;
        }
        .data-chart-mini .bar {
            width: 8px;
            border-radius: 2px 2px 0 0;
            background: var(--accent-mint);
            opacity: 0.7;
            transition: all var(--transition);
        }
        .data-chart-mini .bar.highlight {
            background: var(--accent-orange);
            opacity: 1;
        }
        .data-chart-mini .bar.accent {
            background: var(--accent);
            opacity: 1;
        }
        .data-chart-mini .bar:hover {
            opacity: 1;
            transform: scaleY(1.08);
        }

        .metric-card {
            background: var(--bg-card-dark);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border-dark);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            opacity: 0.6;
        }
        .metric-card:hover {
            border-color: rgba(232, 255, 70, 0.3);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }
        .metric-card .metric-icon {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--accent);
        }
        .metric-card .metric-value {
            font-family: var(--font-en);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.02em;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .metric-card .metric-label {
            font-size: 0.8rem;
            color: var(--text-dark-muted);
            font-weight: 500;
        }
        .metric-card .metric-trend {
            font-size: 0.75rem;
            color: var(--accent-mint);
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .info-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .info-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .info-card .info-icon {
            font-size: 1.6rem;
            margin-bottom: 14px;
            color: var(--accent-orange);
        }
        .info-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .info-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        .update-frequency-bar {
            background: var(--primary);
            color: var(--text-light);
            border-radius: var(--radius);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            border: 1px solid var(--border-dark);
        }
        .frequency-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .freq-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 1.8s infinite;
        }
        .frequency-indicator span {
            font-size: 0.9rem;
            color: var(--text-dark-muted);
        }
        .frequency-indicator strong {
            color: var(--accent);
            font-weight: 600;
        }

        .query-tool-placeholder {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed rgba(255, 92, 57, 0.35);
            padding: 32px 28px;
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .query-tool-placeholder .tool-icon {
            font-size: 2rem;
            color: var(--accent-orange);
        }
        .query-tool-placeholder h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .query-tool-placeholder p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .query-tool-placeholder .tool-input-group {
            display: flex;
            gap: 8px;
            flex: 1;
            min-width: 240px;
        }
        .query-tool-placeholder input {
            flex: 1;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            font-family: var(--font-cn);
            font-size: 0.9rem;
            color: var(--text-primary);
            outline: none;
            transition: border-color var(--transition);
        }
        .query-tool-placeholder input:focus {
            border-color: var(--accent-orange);
            box-shadow: 0 0 0 3px rgba(255, 92, 57, 0.1);
        }

        .data-source-note {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.7;
            padding: 16px 20px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent-mint);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .container {
            max-width: 1140px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .footer-brand h3 span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .footer-beian a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-beian a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: var(--shadow-lg);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-toggle {
                display: block;
            }
            .sub-header {
                padding: 10px 16px;
            }
            .sub-header-search input {
                width: 80px;
            }
            .grid-3,
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 44px 0;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .data-hero {
                padding: 36px 0 32px;
            }
            .data-hero h1 {
                font-size: clamp(1.5rem, 5vw, 2rem);
            }
            .filter-bar {
                padding: 12px 14px;
                gap: 8px;
            }
            .filter-bar .filter-sort {
                margin-left: 0;
            }
            .data-table {
                font-size: 0.8rem;
            }
            .data-table th,
            .data-table td {
                padding: 10px 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .update-frequency-bar {
                padding: 24px 20px;
                gap: 16px;
            }
            .query-tool-placeholder {
                padding: 24px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .sub-header-search {
                display: none;
            }
            .sub-header-link {
                font-size: 0.75rem;
                padding: 4px 8px;
            }
            .data-hero .hero-desc {
                font-size: 0.9rem;
            }
            .data-hero .hero-meta {
                font-size: 0.72rem;
                gap: 10px;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0B1210;
            --primary-dark: #060A08;
            --accent: #E8FF46;
            --accent-orange: #FF5C39;
            --accent-mint: #39D9C8;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-card-dark: #111A16;
            --text-primary: #1A1F1D;
            --text-secondary: #5B6661;
            --text-light: #F4F6F5;
            --text-dark-muted: rgba(255,255,255,0.55);
            --border-subtle: rgba(0,0,0,0.08);
            --border-dark: rgba(232,255,70,0.12);
            --border-dark-mint: rgba(57,217,200,0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 6px 20px rgba(0,0,0,0.04);
            --shadow-md: 0 12px 40px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
            --transition: 0.25s ease;
            --transition-fast: 0.15s ease;
            --sidebar-width: 260px;
            --sidebar-collapsed: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

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

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: inherit;
            transition: all var(--transition);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 40px;
        }

        .section-dark .section-subtitle {
            color: var(--text-dark-muted);
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(255,92,57,0.3);
        }

        .btn-primary:hover {
            background: #e84d2e;
            box-shadow: 0 6px 24px rgba(255,92,57,0.4);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255,92,57,0.3);
        }

        .btn-accent {
            background: var(--accent);
            color: #0B1210;
            box-shadow: 0 4px 16px rgba(232,255,70,0.25);
        }

        .btn-accent:hover {
            background: #d8ef35;
            box-shadow: 0 6px 24px rgba(232,255,70,0.35);
            color: #0B1210;
            transform: translateY(-1px);
        }

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

        .btn-outline:hover {
            background: rgba(11,18,16,0.06);
            border-color: rgba(11,18,16,0.2);
            color: var(--text-primary);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255,255,255,0.3);
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.5);
            color: var(--text-light);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: rgba(232,255,70,0.15);
            color: #5a6d00;
            border: 1px solid rgba(232,255,70,0.3);
        }

        .badge-orange {
            background: rgba(255,92,57,0.1);
            color: #c03d1e;
            border-color: rgba(255,92,57,0.25);
        }

        .badge-mint {
            background: rgba(57,217,200,0.1);
            color: #1a8a7a;
            border-color: rgba(57,217,200,0.3);
        }

        .badge-dark {
            background: rgba(232,255,70,0.1);
            color: var(--accent);
            border-color: rgba(232,255,70,0.2);
        }

        /* App Shell Sidebar */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary-dark);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            border-right: 1px solid rgba(255,255,255,0.06);
            transition: transform var(--transition);
        }

        .sidebar-header {
            padding: 24px 20px 18px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }

        .sidebar-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-light);
            letter-spacing: 0.04em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 16px 12px;
            gap: 4px;
            overflow-y: auto;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-dark-muted);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            transition: all var(--transition);
            line-height: 1.4;
        }

        .sidebar-nav-item:hover {
            background: rgba(255,255,255,0.05);
            color: var(--text-light);
        }

        .sidebar-nav-item.active {
            background: rgba(232,255,70,0.08);
            color: var(--accent);
            border-left: 4px solid var(--accent);
            padding-left: 12px;
        }

        .sidebar-nav-icon {
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-badge {
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 10px;
            background: rgba(232,255,70,0.15);
            color: var(--accent);
            margin-left: auto;
            flex-shrink: 0;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.75rem;
            color: rgba(255,255,255,0.35);
            flex-shrink: 0;
        }

        .sidebar-footer p {
            margin-bottom: 4px;
        }

        /* Main content area */
        .main-area {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .sub-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0 24px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: sticky;
            top: 0;
            z-index: 100;
            flex-shrink: 0;
        }

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

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

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

        .breadcrumb-sep {
            color: #bbb;
            font-size: 0.8rem;
        }

        .sub-header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: transparent;
            transition: all var(--transition);
        }

        .search-btn:hover {
            background: rgba(11,18,16,0.04);
            color: var(--text-primary);
        }

        .login-btn {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: var(--text-light);
            font-size: 0.85rem;
            font-weight: 500;
            transition: all var(--transition);
        }

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

        /* Mobile top bar */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: var(--primary-dark);
            z-index: 1000;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }

        .mobile-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
        }

        .hamburger-btn {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.15);
        }

        .hamburger-btn span {
            width: 20px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            display: block;
            transition: all var(--transition);
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        /* Hero for category page */
        .cat-hero {
            background: var(--primary);
            color: var(--text-light);
            padding: 60px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/34a460376572231d.webp') center/cover no-repeat;
            opacity: 0.25;
            pointer-events: none;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,18,16,0.5) 0%, rgba(11,18,16,0.85) 100%);
            pointer-events: none;
        }

        .cat-hero-content {
            position: relative;
            z-index: 1;
            max-width: 780px;
        }

        .cat-hero h1 {
            font-size: clamp(1.8rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .cat-hero p {
            font-size: 1rem;
            color: var(--text-dark-muted);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            position: relative;
            z-index: 1;
        }

        .filter-label {
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            margin-right: 4px;
        }

        .filter-chip {
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.2);
            color: var(--text-light);
            font-size: 0.85rem;
            background: transparent;
            transition: all var(--transition);
            cursor: pointer;
        }

        .filter-chip:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.4);
        }

        .filter-chip.active {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            font-weight: 600;
        }

        /* Focus match widget */
        .focus-match {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            padding: 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            border: 1px solid var(--border-subtle);
        }

        .focus-match-info {
            flex: 1;
            min-width: 200px;
        }

        .focus-match-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }

        .focus-match-title {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .focus-match-time {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .focus-match-teams {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
            min-width: 280px;
            justify-content: center;
        }

        .focus-team {
            text-align: center;
            flex: 1;
        }

        .focus-team-name {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-top: 8px;
        }

        .focus-team-logo {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #f0f0f0;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            border: 2px solid var(--border-subtle);
        }

        .focus-vs {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .focus-match-status {
            text-align: center;
            flex-shrink: 0;
            min-width: 120px;
        }

        .status-live {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255,92,57,0.1);
            color: #c03d1e;
            font-weight: 700;
            font-size: 0.85rem;
            border: 1px solid rgba(255,92,57,0.3);
            animation: pulse-live 1.5s infinite;
        }

        @keyframes pulse-live {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.6; }
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-card {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(255,92,57,0.2);
        }

        .news-card:hover .news-title {
            color: var(--accent-orange);
        }

        .news-thumb {
            width: 240px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: #e8e8e8;
            aspect-ratio: 3/2;
        }

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

        .news-body {
            flex: 1;
            min-width: 260px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .news-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            transition: color var(--transition);
        }

        .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* League tags */
        .league-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .league-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            border: 1px solid var(--border-subtle);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: all var(--transition);
            cursor: pointer;
        }

        .league-tag:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        .league-tag-icon {
            font-size: 1.1rem;
        }

        /* Data snapshot */
        .data-snapshot-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            background: var(--primary);
            border-radius: var(--radius);
            padding: 24px;
            color: var(--text-light);
        }

        .snapshot-item {
            text-align: center;
            padding: 12px;
            border-right: 1px solid rgba(255,255,255,0.08);
        }

        .snapshot-item:last-child {
            border-right: none;
        }

        .snapshot-number {
            font-family: var(--font-en);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .snapshot-label {
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            margin-top: 4px;
        }

        /* CTA subscribe */
        .subscribe-cta {
            background: var(--primary-dark);
            border-radius: var(--radius);
            padding: 48px 36px;
            text-align: center;
            color: var(--text-light);
            border: 1px solid var(--border-dark);
            position: relative;
            overflow: hidden;
        }

        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(232,255,70,0.04) 0%, transparent 60%);
            pointer-events: none;
        }

        .subscribe-cta h2 {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
        }

        .subscribe-cta p {
            font-size: 0.95rem;
            color: var(--text-dark-muted);
            max-width: 480px;
            margin: 0 auto 24px;
            position: relative;
        }

        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.05);
            color: var(--text-light);
            font-size: 0.95rem;
            font-family: var(--font-cn);
            transition: all var(--transition);
        }

        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.4);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(232,255,70,0.15);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 64px 0 24px;
            flex-shrink: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-dark-muted);
            max-width: 320px;
            line-height: 1.75;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            margin-bottom: 8px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.06);
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-beian a {
            color: rgba(255,255,255,0.4);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar {
                width: var(--sidebar-collapsed);
            }

            .sidebar .nav-text,
            .sidebar .sidebar-badge,
            .sidebar-footer {
                display: none;
            }

            .sidebar-logo {
                font-size: 0;
                justify-content: center;
            }

            .sidebar-logo-icon {
                font-size: 1.2rem;
            }

            .sidebar-nav-item {
                justify-content: center;
                padding: 12px;
            }

            .sidebar-nav-item.active {
                padding-left: 8px;
                border-left: 4px solid var(--accent);
            }

            .main-area {
                margin-left: var(--sidebar-collapsed);
            }

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

            .news-thumb {
                width: 200px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }

            .sidebar.mobile-open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }

            .sidebar .nav-text,
            .sidebar .sidebar-badge,
            .sidebar-footer {
                display: block;
            }

            .sidebar-logo {
                font-size: 1.4rem;
                justify-content: flex-start;
            }

            .sidebar-nav-item {
                justify-content: flex-start;
                padding: 12px 16px;
            }

            .sidebar-nav-item.active {
                padding-left: 12px;
            }

            .main-area {
                margin-left: 0;
            }

            .mobile-topbar {
                display: flex;
            }

            .drawer-overlay.show {
                display: block;
            }

            .sub-header {
                display: none;
            }

            .main-area {
                padding-top: 56px;
            }

            .cat-hero {
                padding: 40px 0 32px;
            }

            .news-thumb {
                width: 100%;
                max-width: 100%;
                aspect-ratio: 16/9;
            }

            .news-card {
                flex-direction: column;
            }

            .focus-match {
                flex-direction: column;
                text-align: center;
            }

            .focus-match-teams {
                flex-direction: column;
                gap: 12px;
            }

            .focus-team-logo {
                width: 52px;
                height: 52px;
                font-size: 1.2rem;
            }

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

            .footer-brand {
                grid-column: 1 / -1;
            }

            .section {
                padding: 48px 0;
            }

            .section-tight {
                padding: 36px 0;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .data-snapshot-bar {
                grid-template-columns: 1fr 1fr;
                padding: 16px;
                gap: 8px;
            }

            .snapshot-number {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .footer-beian {
                justify-content: center;
            }

            .cat-hero h1 {
                font-size: 1.6rem;
            }

            .filter-bar {
                gap: 6px;
            }

            .filter-chip {
                padding: 6px 12px;
                font-size: 0.75rem;
            }

            .subscribe-cta {
                padding: 32px 20px;
            }

            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0B1210;
            --primary-dark: #060A08;
            --accent: #E8FF46;
            --accent-orange: #FF5C39;
            --accent-mint: #39D9C8;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-card-dark: #111A16;
            --text-primary: #1A1F1D;
            --text-secondary: #5B6661;
            --text-light: #F4F6F5;
            --text-dark-muted: rgba(255,255,255,0.55);
            --border-subtle: rgba(0,0,0,0.08);
            --border-dark: rgba(232,255,70,0.12);
            --border-dark-mint: rgba(57,217,200,0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 6px 20px rgba(0,0,0,0.04);
            --shadow-md: 0 12px 40px rgba(0,0,0,0.06);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
            --transition: 0.25s ease;
            --transition-fast: 0.15s ease;
            --sidebar-width: 260px;
            --sidebar-collapsed: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
        }

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

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: inherit;
            transition: all var(--transition);
        }

        * {
            box-sizing: border-box;
        }

        h1, h2, h3, h4, h5, p {
            margin: 0;
        }

        ul, ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }

        .section-tight {
            padding: 56px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 40px;
        }

        .section-dark .section-subtitle {
            color: var(--text-dark-muted);
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(255,92,57,0.3);
        }

        .btn-primary:hover {
            background: #e84d2e;
            box-shadow: 0 6px 24px rgba(255,92,57,0.4);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255,92,57,0.3);
        }

        .btn-accent {
            background: var(--accent);
            color: #0B1210;
            box-shadow: 0 4px 16px rgba(232,255,70,0.25);
        }

        .btn-accent:hover {
            background: #d8ef35;
            box-shadow: 0 6px 24px rgba(232,255,70,0.35);
            color: #0B1210;
            transform: translateY(-1px);
        }

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

        .btn-outline:hover {
            background: rgba(11,18,16,0.06);
            border-color: rgba(11,18,16,0.2);
            color: var(--text-primary);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255,255,255,0.3);
        }

        .btn-outline-light:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(255,255,255,0.5);
            color: var(--text-light);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(232,255,70,0.18);
            color: #3e4d00;
            line-height: 1.5;
        }

        .section-dark .tag {
            background: rgba(232,255,70,0.15);
            color: var(--accent);
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }

        .badge-orange {
            background: var(--accent-orange);
            color: #ffffff;
        }

        .badge-mint {
            background: var(--accent-mint);
            color: #0B1210;
        }

        .badge-outline {
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

        /* App Shell Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary-dark);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            padding: 32px 20px 24px;
            z-index: 1000;
            border-right: 1px solid var(--border-dark);
            transition: transform var(--transition);
            overflow-y: auto;
        }

        .sidebar-logo {
            margin-bottom: 32px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-dark);
        }

        .sidebar-logo a {
            font-size: 1.4rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 8px;
            font-weight: 900;
            font-size: 1rem;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .sidebar-nav-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-dark-muted);
            position: relative;
            transition: all var(--transition-fast);
            line-height: 1.4;
        }

        .sidebar-nav-item:hover {
            background: rgba(232,255,70,0.06);
            color: var(--text-light);
        }

        .sidebar-nav-item.active {
            background: rgba(232,255,70,0.08);
            color: var(--accent);
            font-weight: 600;
        }

        .sidebar-nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 2px 2px 0;
        }

        .sidebar-nav-icon {
            font-size: 1.1rem;
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }

        .sidebar-badge {
            margin-left: auto;
            font-size: 0.65rem;
            padding: 2px 8px;
            background: var(--accent);
            color: var(--primary-dark);
            border-radius: 999px;
            font-weight: 700;
            white-space: nowrap;
        }

        .sidebar-bottom {
            padding-top: 16px;
            border-top: 1px solid var(--border-dark);
            font-size: 0.72rem;
            color: var(--text-dark-muted);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .sidebar-small-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent-mint);
            border-radius: 50%;
            margin-right: 6px;
            vertical-align: middle;
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-height: 100vh;
        }

        .sub-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-subtle);
            padding: 10px 0;
            position: sticky;
            top: 0;
            z-index: 500;
        }

        .sub-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .breadcrumb {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb span.sep {
            color: var(--border-subtle);
        }

        .sub-header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            font-size: 0.8rem;
            color: var(--text-secondary);
            background: var(--bg-light);
            transition: all var(--transition-fast);
        }

        .search-btn:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
            background: var(--bg-light);
            border: 1px solid var(--border-subtle);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Category Header */
        .cat-header {
            background: var(--primary);
            color: var(--text-light);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .cat-header::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(232,255,70,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cat-header-content {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .cat-header-left {
            flex: 1;
            min-width: 280px;
        }

        .cat-header h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            color: var(--text-light);
        }

        .cat-header h1 span {
            color: var(--accent);
        }

        .cat-header-desc {
            font-size: 1rem;
            color: var(--text-dark-muted);
            max-width: 680px;
            line-height: 1.85;
        }

        .cat-toolbar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(255,255,255,0.06);
            color: var(--text-dark-muted);
            border: 1px solid rgba(255,255,255,0.12);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .filter-chip:hover {
            background: rgba(232,255,70,0.08);
            color: var(--text-light);
            border-color: rgba(232,255,70,0.25);
        }

        .filter-chip.active {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            font-weight: 700;
        }

        .sort-select {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,0.08);
            color: var(--text-light);
            border: 1px solid rgba(255,255,255,0.15);
            font-size: 0.8rem;
            font-family: var(--font-cn);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .sort-select:hover {
            border-color: rgba(232,255,70,0.3);
        }

        /* Feature Card */
        .topic-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(232,255,70,0.35);
        }

        .topic-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
            background: var(--bg-light);
        }

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

        .topic-card:hover .topic-card-img img {
            transform: scale(1.03);
        }

        .topic-card-body {
            padding: 22px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .topic-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .topic-card:hover .topic-card-title {
            color: var(--accent-orange);
        }

        .topic-card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .topic-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-secondary);
            padding-top: 14px;
            border-top: 1px solid var(--border-subtle);
        }

        .topic-card-meta .date {
            color: var(--text-secondary);
        }

        .topic-card-meta .read-more {
            color: var(--accent-orange);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Deep read list */
        .deep-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .deep-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .deep-item:last-child {
            border-bottom: none;
        }

        .deep-item:hover .deep-title {
            color: var(--accent-orange);
        }

        .deep-num {
            font-family: var(--font-en);
            font-size: 2rem;
            font-weight: 800;
            color: var(--border-subtle);
            line-height: 1;
            min-width: 48px;
            text-align: center;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }

        .deep-item:hover .deep-num {
            color: var(--accent);
        }

        .deep-content {
            flex: 1;
        }

        .deep-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 6px;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .deep-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .deep-meta {
            display: flex;
            gap: 16px;
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        /* Archive timeline */
        .archive-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 24px;
        }

        .archive-list::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: var(--border-subtle);
        }

        .archive-item {
            position: relative;
            padding: 14px 0 14px 24px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .archive-item:last-child {
            border-bottom: none;
        }

        .archive-item::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 24px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid var(--bg-white);
            box-shadow: 0 0 0 2px var(--border-subtle);
        }

        .archive-item-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
        }

        .archive-year {
            font-family: var(--font-en);
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-orange);
            letter-spacing: 0.02em;
        }

        .archive-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .archive-title:hover {
            color: var(--accent-orange);
        }

        .archive-count {
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-left: auto;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary);
            color: var(--text-light);
        }

        .cta-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
        }

        .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .cta-text h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-text h2 span {
            color: var(--accent);
        }

        .cta-text p {
            color: var(--text-dark-muted);
            max-width: 560px;
            line-height: 1.75;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            min-width: 280px;
            flex: 1;
            max-width: 480px;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.06);
            color: var(--text-light);
            font-size: 0.9rem;
            font-family: var(--font-cn);
            transition: all var(--transition-fast);
        }

        .cta-form input::placeholder {
            color: rgba(255,255,255,0.4);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232,255,70,0.15);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 60px 0 24px;
        }

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

        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--accent);
            letter-spacing: 0.02em;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            line-height: 1.75;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border-dark);
            font-size: 0.75rem;
            color: var(--text-dark-muted);
        }

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-dark-muted);
        }

        .footer-beian a {
            color: var(--text-dark-muted);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 240px;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
            .footer-col:nth-child(4) {
                grid-column: span 3;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 0px;
            }
            .sidebar-nav {
                transform: translateX(-100%);
            }
            .sidebar-nav.open {
                transform: translateX(0);
                width: 260px;
            }
            .main-content {
                margin-left: 0;
            }
            .hamburger {
                display: flex;
            }
            .sidebar-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0,0,0,0.5);
                z-index: 999;
            }
            .sidebar-overlay.open {
                display: block;
            }
            .grid-3, .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-col:nth-child(4) {
                grid-column: span 2;
            }
            .section {
                padding: 56px 0;
            }
            .cat-header {
                padding: 32px 0;
            }
            .deep-item {
                flex-direction: column;
                gap: 8px;
            }
            .deep-num {
                text-align: left;
                min-width: auto;
            }
            .archive-item {
                padding-left: 12px;
            }
            .archive-item::before {
                left: -14px;
            }
        }

        @media (max-width: 520px) {
            .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-col:nth-child(4) {
                grid-column: span 1;
            }
            .container {
                padding: 0 16px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                min-width: 100%;
            }
            .btn-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
        }

/* roulang page: category4 */
:root {
        --primary: #0B1210;
        --primary-dark: #060A08;
        --accent: #E8FF46;
        --accent-orange: #FF5C39;
        --accent-mint: #39D9C8;
        --bg-light: #F4F6F5;
        --bg-white: #FFFFFF;
        --bg-card-dark: #111A16;
        --text-primary: #1A1F1D;
        --text-secondary: #5B6661;
        --text-light: #F4F6F5;
        --text-dark-muted: rgba(255,255,255,0.55);
        --border-subtle: rgba(0,0,0,0.08);
        --border-dark: rgba(232,255,70,0.12);
        --border-dark-mint: rgba(57,217,200,0.2);
        --radius: 16px;
        --radius-sm: 10px;
        --radius-xs: 6px;
        --shadow-sm: 0 6px 20px rgba(0,0,0,0.04);
        --shadow-md: 0 12px 40px rgba(0,0,0,0.06);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
        --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
        --transition: 0.25s ease;
        --transition-fast: 0.15s ease;
        --sidebar-width: 260px;
        --sidebar-collapsed: 72px;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
        box-sizing: border-box;
    }

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

    body {
        font-family: var(--font-cn);
        font-size: 1rem;
        line-height: 1.85;
        color: var(--text-primary);
        background: var(--bg-light);
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

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

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--accent-orange);
        outline-offset: 2px;
    }

    button {
        cursor: pointer;
        border: none;
        background: none;
        font-family: var(--font-cn);
        font-size: inherit;
        transition: all var(--transition);
    }

    .container {
        max-width: 1140px;
        margin: 0 auto;
        padding: 0 24px;
    }

    .section {
        padding: 72px 0;
        position: relative;
    }

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

    .section-dark {
        background: var(--primary);
        color: var(--text-light);
    }

    .section-tight {
        padding: 48px 0;
    }

    .section-label {
        display: inline-block;
        font-size: 0.78rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--accent-orange);
        margin-bottom: 10px;
    }

    .section-title {
        font-size: clamp(1.35rem, 2.6vw, 2.0rem);
        font-weight: 700;
        line-height: 1.32;
        margin-bottom: 14px;
        letter-spacing: -0.01em;
        color: var(--text-primary);
    }

    .section-subtitle {
        font-size: 0.95rem;
        color: var(--text-secondary);
        max-width: 680px;
        line-height: 1.85;
        margin-bottom: 36px;
    }

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

    .section-dark .section-subtitle {
        color: var(--text-dark-muted);
    }

    .grid {
        display: grid;
        gap: 24px;
    }

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

    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

    .btn {
        display: inline-block;
        padding: 12px 28px;
        border-radius: var(--radius-sm);
        font-size: 0.93rem;
        font-weight: 600;
        letter-spacing: 0.01em;
        transition: all var(--transition);
        text-align: center;
        cursor: pointer;
        line-height: 1.5;
        border: none;
    }

    .btn-primary {
        background: var(--accent-orange);
        color: #ffffff;
        box-shadow: 0 4px 16px rgba(255,92,57,0.3);
    }

    .btn-primary:hover {
        background: #e84d2e;
        box-shadow: 0 6px 24px rgba(255,92,57,0.4);
        color: #ffffff;
        transform: translateY(-1px);
    }

    .btn-primary:active {
        transform: translateY(1px);
        box-shadow: 0 2px 8px rgba(255,92,57,0.3);
    }

    .btn-accent {
        background: var(--accent);
        color: #0B1210;
        box-shadow: 0 4px 16px rgba(232,255,70,0.25);
    }

    .btn-accent:hover {
        background: #d8ef35;
        box-shadow: 0 6px 24px rgba(232,255,70,0.35);
        color: #0B1210;
        transform: translateY(-1px);
    }

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

    .btn-outline:hover {
        background: rgba(11,18,16,0.06);
        border-color: rgba(11,18,16,0.2);
        color: var(--text-primary);
    }

    .btn-outline-light {
        background: transparent;
        color: var(--text-light);
        border: 1px solid rgba(255,255,255,0.3);
    }

    .btn-outline-light:hover {
        background: rgba(255,255,255,0.08);
        border-color: rgba(255,255,255,0.5);
        color: var(--text-light);
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.82rem;
    }

    .btn-lg {
        padding: 14px 32px;
        font-size: 1rem;
    }

    /* Badge */
    .badge {
        display: inline-block;
        font-size: 0.72rem;
        font-weight: 600;
        letter-spacing: 0.03em;
        padding: 4px 10px;
        border-radius: 999px;
        background: rgba(232,255,70,0.15);
        color: #8fa312;
    }

    .badge-dark {
        background: rgba(232,255,70,0.18);
        color: var(--accent);
    }

    .badge-orange {
        background: rgba(255,92,57,0.12);
        color: var(--accent-orange);
    }

    .badge-mint {
        background: rgba(57,217,200,0.12);
        color: #1a9e92;
    }

    /* Sidebar */
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: var(--sidebar-width);
        height: 100vh;
        background: var(--primary);
        color: var(--text-light);
        display: flex;
        flex-direction: column;
        z-index: 60;
        overflow-y: auto;
    }

    .sidebar-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 22px 20px;
        margin-bottom: 12px;
    }

    .sidebar-logo a {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--accent);
        display: flex;
        align-items: center;
        gap: 8px;
    }

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

    .sidebar-logo-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 34px;
        height: 34px;
        border-radius: 8px;
        background: rgba(232,255,70,0.12);
        font-size: 1.1rem;
        color: var(--accent);
    }

    .sidebar-nav {
        display: flex;
        flex-direction: column;
        gap: 2px;
        padding: 0 12px;
    }

    .sidebar-nav-item {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 12px 14px;
        border-radius: 10px;
        font-size: 0.9rem;
        font-weight: 500;
        color: rgba(255,255,255,0.65);
        position: relative;
        transition: all var(--transition);
    }

    .sidebar-nav-item:hover {
        background: rgba(232,255,70,0.08);
        color: var(--text-light);
    }

    .sidebar-nav-item.active {
        background: rgba(232,255,70,0.12);
        color: var(--accent);
    }

    .sidebar-nav-item.active::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 4px;
        height: 26px;
        border-radius: 2px;
        background: var(--accent);
    }

    .sidebar-nav-icon {
        font-size: 1.1rem;
        width: 22px;
        text-align: center;
        flex-shrink: 0;
    }

    .sidebar-badge {
        margin-left: auto;
        font-size: 0.7rem;
        font-weight: 600;
        padding: 3px 8px;
        border-radius: 999px;
        background: rgba(255,92,57,0.2);
        color: var(--accent-orange);
        letter-spacing: 0.03em;
        white-space: nowrap;
    }

    .sidebar-footer {
        margin-top: auto;
        padding: 18px 20px 20px;
        border-top: 1px solid rgba(255,255,255,0.06);
        font-size: 0.75rem;
        color: rgba(255,255,255,0.4);
        line-height: 1.6;
    }

    .sidebar-footer p {
        margin-bottom: 4px;
    }

    /* Main content wrapper */
    .main-wrapper {
        margin-left: var(--sidebar-width);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

    /* Sub-header */
    .sub-header {
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-subtle);
        padding: 10px 24px;
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 0.82rem;
        color: var(--text-secondary);
        position: sticky;
        top: 0;
        z-index: 40;
    }

    .sub-header .breadcrumb {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
    }

    .sub-header .breadcrumb a {
        color: var(--text-secondary);
    }

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

    .sub-header .breadcrumb .separator {
        color: var(--border-subtle);
    }

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

    .sub-header .sub-tools {
        margin-left: auto;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .sub-header .sub-tools .search-btn,
    .sub-header .sub-tools .login-btn {
        padding: 6px 12px;
        border-radius: 8px;
        font-size: 0.8rem;
        color: var(--text-secondary);
        transition: all var(--transition);
    }

    .sub-header .sub-tools .search-btn:hover,
    .sub-header .sub-tools .login-btn:hover {
        background: rgba(11,18,16,0.05);
        color: var(--text-primary);
    }

    /* Mobile top bar */
    .mobile-topbar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: var(--primary);
        color: var(--text-light);
        padding: 12px 16px;
        z-index: 65;
        align-items: center;
        gap: 12px;
    }

    .mobile-topbar .mobile-logo {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--accent);
    }

    .mobile-topbar .hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 8px;
        color: var(--text-light);
        font-size: 1.2rem;
        margin-left: auto;
        background: rgba(255,255,255,0.06);
    }

    .mobile-topbar .hamburger:hover {
        background: rgba(255,255,255,0.12);
    }

    /* Mobile drawer */
    .mobile-drawer-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 70;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .mobile-drawer-overlay.open {
        opacity: 1;
    }

    .mobile-drawer {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        background: var(--primary);
        color: var(--text-light);
        z-index: 75;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        flex-direction: column;
        overflow-y: auto;
    }

    .mobile-drawer.open {
        transform: translateX(0);
    }

    .mobile-drawer .mobile-drawer-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 20px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .mobile-drawer .mobile-drawer-header span {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--accent);
    }

    .mobile-drawer .close-btn {
        font-size: 1.4rem;
        color: rgba(255,255,255,0.7);
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
    }

    .mobile-drawer .close-btn:hover {
        background: rgba(255,255,255,0.08);
        color: var(--text-light);
    }

    .mobile-drawer .sidebar-nav {
        padding: 16px 12px;
    }

    /* Category hero */
    .category-hero {
        background: linear-gradient(135deg, #0B1210 0%, #111A16 100%);
        color: var(--text-light);
        padding: 52px 0 44px;
        overflow: hidden;
        position: relative;
    }

    .category-hero::after {
        content: '';
        position: absolute;
        right: -60px;
        top: -60px;
        width: 260px;
        height: 260px;
        border-radius: 50%;
        background: rgba(232,255,70,0.06);
        pointer-events: none;
    }

    .category-hero::before {
        content: '';
        position: absolute;
        right: 80px;
        bottom: -40px;
        width: 120px;
        height: 120px;
        border-radius: 50%;
        border: 1px solid rgba(57,217,200,0.15);
        pointer-events: none;
    }

    .category-hero-inner {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: 32px;
        flex-wrap: wrap;
        position: relative;
        z-index: 2;
    }

    .category-hero-left {
        flex: 1;
        min-width: 280px;
    }

    .category-hero h1 {
        font-size: clamp(1.7rem, 3.5vw, 2.5rem);
        font-weight: 700;
        line-height: 1.25;
        color: var(--accent);
        margin-bottom: 12px;
        letter-spacing: -0.01em;
    }

    .category-hero .hero-desc {
        font-size: 0.95rem;
        color: rgba(255,255,255,0.7);
        max-width: 560px;
        line-height: 1.8;
        margin-bottom: 20px;
    }

    .category-hero-right {
        display: flex;
        flex-direction: column;
        gap: 10px;
        align-items: flex-end;
        flex-shrink: 0;
    }

    .filter-toolbar {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-wrap: wrap;
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 12px;
        padding: 10px 14px;
    }

    .filter-toolbar .filter-group {
        display: flex;
        gap: 6px;
        flex-wrap: wrap;
    }

    .filter-toolbar .filter-btn {
        padding: 7px 14px;
        border-radius: 8px;
        font-size: 0.8rem;
        font-weight: 500;
        color: rgba(255,255,255,0.6);
        background: transparent;
        border: 1px solid transparent;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .filter-toolbar .filter-btn:hover {
        color: var(--text-light);
        background: rgba(255,255,255,0.08);
    }

    .filter-toolbar .filter-btn.active {
        background: rgba(232,255,70,0.15);
        color: var(--accent);
        border-color: rgba(232,255,70,0.25);
    }

    .filter-toolbar .sort-select {
        background: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.12);
        color: var(--text-light);
        padding: 7px 12px;
        border-radius: 8px;
        font-size: 0.8rem;
        cursor: pointer;
        font-family: var(--font-cn);
    }

    /* Brand news list */
    .brand-news-list .news-card {
        display: flex;
        gap: 20px;
        background: var(--bg-white);
        border-radius: var(--radius);
        border: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-sm);
        padding: 20px;
        margin-bottom: 16px;
        transition: all var(--transition);
        overflow: hidden;
    }

    .brand-news-list .news-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }

    .brand-news-list .news-card .news-thumb {
        width: 120px;
        height: 90px;
        flex-shrink: 0;
        border-radius: 10px;
        overflow: hidden;
        background: #e8e8e8;
    }

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

    .brand-news-list .news-card .news-content {
        flex: 1;
        min-width: 0;
    }

    .brand-news-list .news-card .news-meta {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.78rem;
        color: var(--text-secondary);
        margin-bottom: 6px;
        flex-wrap: wrap;
    }

    .brand-news-list .news-card .news-title {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 6px;
        line-height: 1.4;
        transition: color var(--transition);
    }

    .brand-news-list .news-card:hover .news-title {
        color: var(--accent-orange);
    }

    .brand-news-list .news-card .news-summary {
        font-size: 0.88rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    /* Stats snapshot */
    .stats-snapshot {
        background: var(--bg-card-dark);
        border-radius: var(--radius);
        padding: 32px 28px;
        color: var(--text-light);
    }

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

    .stats-snapshot .stat-item {
        text-align: center;
    }

    .stats-snapshot .stat-number {
        font-family: var(--font-en);
        font-size: 2.2rem;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.2;
        letter-spacing: -0.02em;
    }

    .stats-snapshot .stat-label {
        font-size: 0.82rem;
        color: rgba(255,255,255,0.6);
        margin-top: 4px;
    }

    /* Timeline */
    .timeline {
        position: relative;
        padding-left: 28px;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 8px;
        top: 8px;
        bottom: 8px;
        width: 2px;
        background: linear-gradient(to bottom, var(--accent), var(--accent-orange), var(--accent-mint));
        border-radius: 2px;
    }

    .timeline-item {
        position: relative;
        padding-bottom: 28px;
        padding-left: 12px;
    }

    .timeline-item:last-child {
        padding-bottom: 0;
    }

    .timeline-item::before {
        content: '';
        position: absolute;
        left: -24px;
        top: 8px;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 0 3px rgba(232,255,70,0.2);
    }

    .timeline-item .timeline-date {
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--accent-orange);
        margin-bottom: 4px;
    }

    .timeline-item .timeline-content h4 {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 6px;
    }

    .timeline-item .timeline-content p {
        font-size: 0.88rem;
        color: var(--text-secondary);
        line-height: 1.75;
        max-width: 640px;
    }

    /* Media voices */
    .media-voices-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .media-voice-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        border: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-sm);
        padding: 26px 24px;
        transition: all var(--transition);
    }

    .media-voice-card:hover {
        box-shadow: var(--shadow-md);
        border-color: rgba(57,217,200,0.25);
    }

    .media-voice-card .voice-text {
        font-size: 0.92rem;
        color: var(--text-primary);
        line-height: 1.8;
        margin-bottom: 14px;
        position: relative;
        padding-left: 16px;
        border-left: 3px solid var(--accent-mint);
    }

    .media-voice-card .voice-src {
        font-size: 0.8rem;
        color: var(--text-secondary);
        font-weight: 500;
    }

    /* Cooperation */
    .coop-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .coop-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        border: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-sm);
        padding: 24px 22px;
        display: flex;
        gap: 16px;
        align-items: flex-start;
        transition: all var(--transition);
    }

    .coop-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }

    .coop-card .coop-icon {
        flex-shrink: 0;
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background: rgba(232,255,70,0.12);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        color: var(--accent);
    }

    .coop-card .coop-info h4 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 6px;
    }

    .coop-card .coop-info p {
        font-size: 0.86rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    /* CTA form */
    .cta-form-box {
        background: var(--primary);
        border-radius: var(--radius);
        padding: 44px 36px;
        color: var(--text-light);
        display: flex;
        gap: 32px;
        flex-wrap: wrap;
        align-items: flex-start;
    }

    .cta-form-box .cta-form-left {
        flex: 1;
        min-width: 260px;
    }

    .cta-form-box .cta-form-left h2 {
        font-size: clamp(1.3rem, 2.4vw, 1.8rem);
        font-weight: 700;
        color: var(--accent);
        margin-bottom: 12px;
        line-height: 1.3;
    }

    .cta-form-box .cta-form-left p {
        font-size: 0.9rem;
        color: rgba(255,255,255,0.65);
        line-height: 1.8;
    }

    .cta-form-box .cta-form-right {
        flex: 1;
        min-width: 260px;
    }

    .cta-form-box .form-group {
        margin-bottom: 14px;
    }

    .cta-form-box .form-input {
        width: 100%;
        padding: 12px 16px;
        border-radius: var(--radius-sm);
        border: 1px solid rgba(255,255,255,0.15);
        background: rgba(255,255,255,0.06);
        color: var(--text-light);
        font-family: var(--font-cn);
        font-size: 0.9rem;
        transition: all var(--transition);
    }

    .cta-form-box .form-input::placeholder {
        color: rgba(255,255,255,0.4);
    }

    .cta-form-box .form-input:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(232,255,70,0.15);
        outline: none;
        background: rgba(255,255,255,0.08);
    }

    .cta-form-box .form-submit {
        background: var(--accent);
        color: #0B1210;
        font-weight: 700;
        padding: 12px 32px;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
        cursor: pointer;
        border: none;
        transition: all var(--transition);
    }

    .cta-form-box .form-submit:hover {
        background: #d8ef35;
        transform: translateY(-1px);
        box-shadow: 0 6px 20px rgba(232,255,70,0.3);
    }

    .cta-form-box .form-submit:active {
        transform: translateY(1px);
    }

    /* Footer */
    .site-footer {
        background: var(--primary-dark);
        color: var(--text-light);
        padding: 52px 0 28px;
        margin-top: 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 32px;
        margin-bottom: 32px;
    }

    .footer-brand h3 {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--accent);
        margin-bottom: 12px;
    }

    .footer-brand h3 span {
        color: var(--accent);
    }

    .footer-brand p {
        font-size: 0.85rem;
        color: rgba(255,255,255,0.55);
        line-height: 1.75;
        max-width: 360px;
    }

    .footer-col h4 {
        font-size: 0.9rem;
        font-weight: 600;
        color: rgba(255,255,255,0.8);
        margin-bottom: 14px;
        letter-spacing: 0.03em;
    }

    .footer-col a {
        display: block;
        font-size: 0.83rem;
        color: rgba(255,255,255,0.5);
        margin-bottom: 8px;
        transition: color var(--transition);
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.08);
        padding-top: 18px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 10px;
        font-size: 0.75rem;
        color: rgba(255,255,255,0.4);
    }

    .footer-bottom .footer-beian {
        display: flex;
        align-items: center;
        gap: 14px;
        flex-wrap: wrap;
    }

    .footer-bottom .footer-beian a {
        color: rgba(255,255,255,0.4);
    }

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

    /* Responsive */
    @media (max-width: 1023px) {
        .sidebar {
            width: var(--sidebar-collapsed);
        }
        .sidebar .nav-text,
        .sidebar .sidebar-badge,
        .sidebar .sidebar-footer p,
        .sidebar .sidebar-logo a span {
            display: none;
        }
        .sidebar-logo {
            justify-content: center;
            padding: 18px 12px;
        }
        .sidebar-nav-item {
            justify-content: center;
            padding: 12px 10px;
        }
        .sidebar-nav-icon {
            font-size: 1.3rem;
        }
        .main-wrapper {
            margin-left: var(--sidebar-collapsed);
        }
        .grid-4,
        .stats-snapshot .stats-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 767px) {
        .sidebar {
            display: none;
        }
        .main-wrapper {
            margin-left: 0;
        }
        .mobile-topbar {
            display: flex;
        }
        .mobile-drawer-overlay {
            display: block;
        }
        .mobile-drawer {
            display: flex;
        }
        .sub-header {
            top: 60px;
            padding: 8px 16px;
            font-size: 0.75rem;
        }
        .category-hero {
            padding: 36px 0 32px;
        }
        .section {
            padding: 48px 0;
        }
        .grid-3,
        .grid-4,
        .grid-2,
        .media-voices-grid,
        .coop-grid,
        .stats-snapshot .stats-grid {
            grid-template-columns: 1fr;
        }
        .brand-news-list .news-card {
            flex-direction: column;
            padding: 16px;
        }
        .brand-news-list .news-card .news-thumb {
            width: 100%;
            height: 160px;
        }
        .cta-form-box {
            padding: 28px 20px;
            flex-direction: column;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
        .category-hero-right {
            align-items: flex-start;
            width: 100%;
        }
        .filter-toolbar {
            width: 100%;
        }
        body.drawer-open {
            overflow: hidden;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }
        .category-hero h1 {
            font-size: 1.5rem;
        }
        .sub-header .sub-tools {
            display: none;
        }
        .timeline {
            padding-left: 20px;
        }
        .timeline-item::before {
            left: -16px;
        }
        .timeline::before {
            left: 4px;
        }
    }

/* roulang page: category5 */
:root {
            --primary: #0B1210;
            --primary-dark: #060A08;
            --accent: #E8FF46;
            --accent-orange: #FF5C39;
            --accent-mint: #39D9C8;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-card-dark: #111A16;
            --text-primary: #1A1F1D;
            --text-secondary: #5B6661;
            --text-light: #F4F6F5;
            --text-dark-muted: rgba(255, 255, 255, 0.55);
            --border-subtle: rgba(0, 0, 0, 0.08);
            --border-dark: rgba(232, 255, 70, 0.12);
            --border-dark-mint: rgba(57, 217, 200, 0.2);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Roboto', 'Inter', 'Helvetica Neue', sans-serif;
            --transition: 0.25s ease;
            --transition-fast: 0.15s ease;
            --sidebar-width: 260px;
            --sidebar-collapsed: 72px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

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

        body {
            font-family: var(--font-cn);
            font-size: 1rem;
            line-height: 1.85;
            color: var(--text-primary);
            background: var(--bg-light);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-orange);
            outline-offset: 2px;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: var(--font-cn);
            font-size: inherit;
            transition: all var(--transition);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 72px 0;
            position: relative;
        }

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

        .section-dark {
            background: var(--primary);
            color: var(--text-light);
        }

        .section-tight {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.85;
            margin-bottom: 40px;
        }

        .section-dark .section-subtitle {
            color: var(--text-dark-muted);
        }

        .grid {
            display: grid;
            gap: 24px;
        }

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

        .grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--accent-orange);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(255, 92, 57, 0.3);
        }

        .btn-primary:hover {
            background: #e84d2e;
            box-shadow: 0 6px 24px rgba(255, 92, 57, 0.4);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255, 92, 57, 0.3);
        }

        .btn-accent {
            background: var(--accent);
            color: #0B1210;
            box-shadow: 0 4px 16px rgba(232, 255, 70, 0.25);
        }

        .btn-accent:hover {
            background: #d8ef35;
            box-shadow: 0 6px 24px rgba(232, 255, 70, 0.35);
            color: #0B1210;
            transform: translateY(-1px);
        }

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

        .btn-outline:hover {
            background: rgba(11, 18, 16, 0.06);
            border-color: rgba(11, 18, 16, 0.2);
            color: var(--text-primary);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-light);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* Sidebar Navigation */
        .sidebar-nav-wrapper {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary-dark);
            z-index: 100;
            display: flex;
            flex-direction: column;
            border-right: 1px solid rgba(232, 255, 70, 0.08);
            transition: transform 0.3s ease, width 0.3s ease;
        }

        .sidebar-logo {
            padding: 24px 20px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .sidebar-logo-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            color: #0B1210;
            flex-shrink: 0;
        }

        .sidebar-logo-text {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-logo-text span {
            color: var(--accent);
        }

        .sidebar-nav {
            padding: 18px 12px;
            flex: 1;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-dark-muted);
            font-size: 0.92rem;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
            overflow: hidden;
        }

        .sidebar-nav-item:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
        }

        .sidebar-nav-item.active {
            color: var(--accent);
            background: rgba(232, 255, 70, 0.06);
        }

        .sidebar-nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }

        .sidebar-nav-icon {
            font-size: 1.1rem;
            width: 24px;
            text-align: center;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-text {
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-badge {
            font-size: 0.65rem;
            font-weight: 600;
            background: rgba(57, 217, 200, 0.15);
            color: var(--accent-mint);
            padding: 3px 8px;
            border-radius: 50px;
            white-space: nowrap;
            letter-spacing: 0.04em;
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
        }

        .sidebar-footer-text {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
            line-height: 1.6;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Main content area */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            transition: margin-left 0.3s ease;
        }

        /* Breadcrumb sub-header */
        .sub-header {
            background: rgba(255, 255, 255, 0.92);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 50;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: #ccc;
            font-size: 0.7rem;
        }

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

        /* Mobile header */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 90;
            background: var(--primary-dark);
            padding: 14px 18px;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(232, 255, 70, 0.08);
        }

        .mobile-header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-light);
        }

        .mobile-header-logo .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 800;
            color: #0B1210;
        }

        .hamburger-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.04);
            transition: all var(--transition);
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .hamburger-btn .bars {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .hamburger-btn .bars span {
            width: 20px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            display: block;
            transition: all var(--transition);
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 89;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: all;
        }

        /* Page header - category H1 */
        .page-header {
            background: var(--primary);
            color: var(--text-light);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .page-header::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(232, 255, 70, 0.08), transparent 70%);
            pointer-events: none;
        }

        .page-header .container {
            position: relative;
            z-index: 1;
        }

        .page-header h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .page-header h1 .accent {
            color: var(--accent);
        }

        .page-header-desc {
            font-size: 0.98rem;
            color: var(--text-dark-muted);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 28px;
        }

        /* Filter toolbar */
        .filter-toolbar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-dark-muted);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-chip:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-light);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .filter-chip.active {
            background: var(--accent);
            color: #0B1210;
            border-color: var(--accent);
            font-weight: 600;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            padding: 8px 18px;
            min-width: 220px;
            flex-shrink: 0;
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 0.85rem;
            font-family: var(--font-cn);
            width: 100%;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .search-box .search-icon {
            font-size: 0.9rem;
            color: var(--text-dark-muted);
            flex-shrink: 0;
        }

        /* Community stats */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 32px 0;
        }

        .stat-block {
            text-align: center;
            padding: 24px 16px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .stat-block:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-number {
            font-family: var(--font-en);
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .stat-number .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-left: 2px;
        }

        .stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* Topic list */
        .topic-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .topic-item {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

        .topic-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 24px;
            bottom: 24px;
            width: 3px;
            background: var(--accent);
            border-radius: 0 3px 3px 0;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .topic-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(232, 255, 70, 0.35);
        }

        .topic-item:hover::before {
            opacity: 1;
        }

        .topic-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-light);
            border: 2px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .topic-avatar.highlight {
            background: rgba(232, 255, 70, 0.2);
            border-color: var(--accent);
            color: var(--primary);
        }

        .topic-body {
            flex: 1;
            min-width: 0;
        }

        .topic-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .topic-tag {
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 50px;
            background: rgba(255, 92, 57, 0.1);
            color: var(--accent-orange);
            letter-spacing: 0.03em;
        }

        .topic-tag.blue {
            background: rgba(57, 217, 200, 0.12);
            color: #1a9e8c;
        }

        .topic-tag.green {
            background: rgba(232, 255, 70, 0.15);
            color: #6b7d00;
        }

        .topic-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: color var(--transition);
        }

        .topic-item:hover .topic-title {
            color: var(--accent-orange);
        }

        .topic-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-footer {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        .topic-footer .stat {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .topic-footer .stat .icon {
            font-size: 0.9rem;
        }

        .topic-footer .stat.hot {
            color: var(--accent-orange);
        }

        /* Hot posts grid */
        .hot-posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .hot-post-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .hot-post-card-img {
            aspect-ratio: 16/9;
            background: var(--bg-light);
            overflow: hidden;
            position: relative;
        }

        .hot-post-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .hot-post-card:hover .hot-post-card-img img {
            transform: scale(1.04);
        }

        .hot-post-rank {
            position: absolute;
            top: 12px;
            left: 12px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            color: #0B1210;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(232, 255, 70, 0.4);
        }

        .hot-post-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .hot-post-card-tag {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent-orange);
            margin-bottom: 8px;
            letter-spacing: 0.03em;
        }

        .hot-post-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            flex: 1;
        }

        .hot-post-card-excerpt {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-post-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-secondary);
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }

        /* Active users */
        .users-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }

        .user-card {
            text-align: center;
            padding: 20px 12px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }

        .user-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(232, 255, 70, 0.3);
            transform: translateY(-3px);
        }

        .user-avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--bg-card-dark);
            border: 2px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent);
            margin: 0 auto 10px;
        }

        .user-avatar.variant-1 {
            border-color: var(--accent-mint);
            color: var(--accent-mint);
        }
        .user-avatar.variant-2 {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
        }
        .user-avatar.variant-3 {
            border-color: var(--accent);
            color: var(--accent);
        }

        .user-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 3px;
        }

        .user-level {
            font-size: 0.7rem;
            color: var(--text-dark-muted);
        }

        /* Community rules */
        .rules-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }

        .rule-item {
            display: flex;
            gap: 14px;
            padding: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .rule-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(232, 255, 70, 0.35);
        }

        .rule-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .rule-icon.r1 {
            background: rgba(232, 255, 70, 0.2);
        }
        .rule-icon.r2 {
            background: rgba(57, 217, 200, 0.15);
        }
        .rule-icon.r3 {
            background: rgba(255, 92, 57, 0.12);
        }
        .rule-icon.r4 {
            background: rgba(232, 255, 70, 0.2);
        }
        .rule-icon.r5 {
            background: rgba(57, 217, 200, 0.15);
        }
        .rule-icon.r6 {
            background: rgba(255, 92, 57, 0.12);
        }

        .rule-text h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .rule-text p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA / Newsletter */
        .cta-section {
            background: var(--primary);
            color: var(--text-light);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(232, 255, 70, 0.06), transparent 70%);
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-content h2 .highlight {
            color: var(--accent);
        }

        .cta-content p {
            font-size: 0.95rem;
            color: var(--text-dark-muted);
            line-height: 1.9;
            max-width: 480px;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 28px;
        }

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

        .cta-form label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-dark-muted);
            margin-bottom: 6px;
            letter-spacing: 0.04em;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-light);
            font-size: 0.9rem;
            font-family: var(--font-cn);
            transition: all var(--transition);
            resize: vertical;
            min-height: 44px;
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(232, 255, 70, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .cta-form .btn {
            width: 100%;
            margin-top: 4px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: var(--text-light);
            padding: 56px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-brand h3 span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: var(--text-dark-muted);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            font-size: 0.83rem;
            color: var(--text-dark-muted);
            padding: 4px 0;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
        }

        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-beian a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar-nav-wrapper {
                width: 72px;
            }
            .sidebar-logo-text,
            .sidebar-nav-item .nav-text,
            .sidebar-badge,
            .sidebar-footer-text {
                display: none;
            }
            .sidebar-logo {
                justify-content: center;
                padding: 18px 10px;
            }
            .sidebar-nav-item {
                justify-content: center;
                padding: 12px;
            }
            .sidebar-nav-icon {
                font-size: 1.3rem;
            }
            .main-content {
                margin-left: 72px;
            }
            .users-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .hot-posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar-nav-wrapper {
                transform: translateX(-100%);
                width: 260px;
                transition: transform 0.3s ease;
            }
            .sidebar-nav-wrapper.open {
                transform: translateX(0);
            }
            .sidebar-logo-text,
            .sidebar-nav-item .nav-text,
            .sidebar-badge,
            .sidebar-footer-text {
                display: block;
            }
            .sidebar-logo {
                justify-content: flex-start;
                padding: 24px 20px 18px;
            }
            .sidebar-nav-item {
                justify-content: flex-start;
                padding: 11px 14px;
            }
            .sidebar-nav-icon {
                font-size: 1.1rem;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .sub-header {
                top: 0;
            }
            .page-header {
                padding: 40px 0 36px;
            }
            .page-header h1 {
                font-size: clamp(1.5rem, 5vw, 2rem);
            }
            .filter-toolbar {
                gap: 6px;
            }
            .filter-chip {
                padding: 6px 14px;
                font-size: 0.75rem;
            }
            .search-box {
                min-width: 100%;
                margin-top: 8px;
            }
            .section {
                padding: 48px 0;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .hot-posts-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .users-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .rules-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-beian {
                justify-content: center;
            }
            .topic-item {
                padding: 16px;
                gap: 12px;
            }
            .topic-avatar {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .topic-title {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-block {
                padding: 16px 8px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .users-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .user-card {
                padding: 14px 8px;
            }
            .user-avatar {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .topic-footer {
                gap: 10px;
                flex-wrap: wrap;
            }
            .hamburger-btn {
                width: 36px;
                height: 36px;
            }
            .mobile-header {
                padding: 10px 14px;
            }
            .page-header {
                padding: 32px 0 28px;
            }
            .page-header-desc {
                font-size: 0.88rem;
            }
        }