/* roulang page: index */
:root {
            --primary: #2F6FED;
            --primary-dark: #1a56c4;
            --primary-light: #e8f0fe;
            --medal-gold: #D4A017;
            --medal-silver: #A8B4C0;
            --medal-bronze: #C97E3D;
            --bg: #F5F8FF;
            --bg-alt: #F8FAFE;
            --text: #1c2a3a;
            --text-secondary: #4a5a6e;
            --text-weak: #7a8a9e;
            --border: rgba(15, 35, 85, 0.06);
            --border-strong: rgba(15, 35, 85, 0.12);
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 6px 24px rgba(31, 56, 100, 0.06);
            --shadow-hover: 0 12px 36px rgba(31, 56, 100, 0.12);
            --spacing-section: 56px;
            --spacing-card: 18px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--primary-dark);
        }

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

        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* Header */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(31, 56, 100, 0.06);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

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

        .brand-logo span em {
            font-style: normal;
            color: var(--primary);
        }

        .brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .search-box input {
            width: 200px;
            padding: 8px 32px 8px 14px;
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            font-size: 0.85rem;
            outline: none;
            background: var(--bg-alt);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.12);
            background: #fff;
        }

        .search-box .search-icon {
            position: absolute;
            right: 12px;
            color: var(--text-weak);
            font-size: 0.8rem;
            pointer-events: none;
        }

        .login-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            background: #fff;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .login-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-tab {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
            gap: 4px;
        }

        .channel-tab:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger-btn:hover {
            background: var(--bg-alt);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 8px 16px 16px;
        }

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

        .mobile-menu .channel-tab {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }

        .mobile-menu .channel-tab:last-child {
            border-bottom: none;
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 64px 0 48px;
            background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 50%, #f8faff 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(47, 111, 237, 0.06);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(212, 160, 23, 0.04);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(47, 111, 237, 0.1);
            color: var(--primary);
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .hero-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .hero-title em {
            font-style: normal;
            color: var(--primary);
        }

        .hero-lead {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }

        .hero-lead p + p {
            margin-top: 10px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            justify-content: center;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(47, 111, 237, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(47, 111, 237, 0.4);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

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

        .hero-visual {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 12px 40px rgba(31, 56, 100, 0.1);
            border: 1px solid var(--border);
        }

        .hero-visual-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-mini-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-mini-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            border-radius: 8px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .hero-mini-item:hover {
            border-color: var(--primary);
            background: #fff;
            box-shadow: var(--shadow);
        }

        .hero-mini-item .rank-badge {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .rank-badge.gold {
            background: var(--medal-gold);
            color: #fff;
        }

        .rank-badge.silver {
            background: var(--medal-silver);
            color: #fff;
        }

        .rank-badge.bronze {
            background: var(--medal-bronze);
            color: #fff;
        }

        .hero-mini-item .info {
            flex: 1;
            min-width: 0;
        }

        .hero-mini-item .info h4 {
            font-size: 0.83rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hero-mini-item .info p {
            font-size: 0.75rem;
            color: var(--text-weak);
            margin: 0;
        }

        .hero-mini-item .score {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
        }

        /* Section Base */
        section {
            padding: var(--spacing-section) 0;
        }

        section.bg-white {
            background: #fff;
        }

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

        .section-heading {
            margin-bottom: 28px;
        }

        .section-heading h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .section-heading p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 720px;
        }

        /* Dimension Bar */
        .dimension-bar {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
        }

        .dimension-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
            cursor: default;
            transition: all var(--transition);
        }

        .dimension-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .dimension-chip i {
            font-size: 0.75rem;
            color: var(--medal-gold);
        }

        /* Podium Cards */
        .podium-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 20px;
        }

        .podium-card {
            background: #fff;
            border-radius: 12px;
            padding: 24px 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .podium-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--border-strong);
        }

        .podium-card.is-gold {
            border-top: 4px solid var(--medal-gold);
        }

        .podium-card.is-silver {
            border-top: 4px solid var(--medal-silver);
        }

        .podium-card.is-bronze {
            border-top: 4px solid var(--medal-bronze);
        }

        .podium-medal {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin: 0 auto 12px;
            font-weight: 700;
        }

        .podium-medal.gold {
            background: var(--medal-gold);
            color: #fff;
            box-shadow: 0 4px 12px rgba(212, 160, 23, 0.35);
        }

        .podium-medal.silver {
            background: var(--medal-silver);
            color: #fff;
            box-shadow: 0 4px 12px rgba(168, 180, 192, 0.4);
        }

        .podium-medal.bronze {
            background: var(--medal-bronze);
            color: #fff;
            box-shadow: 0 4px 12px rgba(201, 126, 61, 0.35);
        }

        .podium-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .podium-score {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .podium-score small {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--text-weak);
        }

        .podium-stars {
            color: var(--medal-gold);
            font-size: 0.9rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .podium-params {
            text-align: left;
            list-style: none;
            padding: 0;
            margin: 0 0 14px;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .podium-params li {
            font-size: 0.82rem;
            color: var(--text-secondary);
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .podium-params li i {
            color: var(--primary);
            font-size: 0.7rem;
            width: 14px;
        }

        .podium-fit {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
            text-align: left;
            font-size: 0.78rem;
            margin-top: 8px;
        }

        .podium-fit .fit-box {
            padding: 8px 10px;
            border-radius: 6px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
        }

        .podium-fit .fit-box strong {
            display: block;
            color: var(--text);
            margin-bottom: 2px;
            font-size: 0.75rem;
        }

        .podium-fit .fit-box span {
            color: var(--text-weak);
        }

        /* Compare Table */
        .compare-table-wrap {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow-x: auto;
            margin-bottom: 20px;
        }

        .compare-table {
            width: 100%;
            min-width: 600px;
            border-collapse: collapse;
            font-size: 0.85rem;
        }

        .compare-table th {
            background: var(--bg-alt);
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            border-bottom: 1px solid var(--border-strong);
        }

        .compare-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
        }

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

        .compare-table .highlight-col {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--primary);
        }

        /* Ranking Cards */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 14px;
        }

        .ranking-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 16px 18px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all var(--transition);
        }

        .ranking-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-1px);
            border-color: var(--border-strong);
        }

        .ranking-card .rank-num {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .ranking-card .rank-num.top1 {
            background: var(--medal-gold);
            color: #fff;
            border-color: var(--medal-gold);
        }

        .ranking-card .rank-num.top2 {
            background: var(--medal-silver);
            color: #fff;
            border-color: var(--medal-silver);
        }

        .ranking-card .rank-num.top3 {
            background: var(--medal-bronze);
            color: #fff;
            border-color: var(--medal-bronze);
        }

        .ranking-card .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-card .rank-info h4 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-card .rank-info .meta {
            font-size: 0.78rem;
            color: var(--text-weak);
        }

        .ranking-card .rank-score {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            text-align: right;
            flex-shrink: 0;
        }

        /* Channel Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .matrix-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }

        .matrix-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--border-strong);
        }

        .matrix-card .matrix-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            margin: 0 auto 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
        }

        .matrix-card .matrix-icon.blue {
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
        }

        .matrix-card .matrix-icon.gold {
            background: linear-gradient(135deg, var(--medal-gold) 0%, #e8b93c 100%);
        }

        .matrix-card .matrix-icon.green {
            background: linear-gradient(135deg, #34a853 0%, #5ac476 100%);
        }

        .matrix-card .matrix-icon.purple {
            background: linear-gradient(135deg, #7c3aed 0%, #9d6ff5 100%);
        }

        .matrix-card h3 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }

        .matrix-card p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0 0 12px;
        }

        .matrix-card .corner-badge {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.65rem;
            font-weight: 700;
        }

        .corner-badge.gold-bg {
            background: var(--medal-gold);
            color: #fff;
        }

        .corner-badge.silver-bg {
            background: var(--medal-silver);
            color: #fff;
        }

        .corner-badge.bronze-bg {
            background: var(--medal-bronze);
            color: #fff;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            text-align: center;
        }

        .stat-item .stat-icon {
            font-size: 1.2rem;
            color: var(--medal-gold);
            margin-bottom: 8px;
        }

        .stat-item .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Process Steps */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .process-step {
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .process-step .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            margin: 0 auto 10px;
        }

        .process-step h3 {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .process-step p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Feature Wall */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

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

        .feature-card .cover {
            height: 150px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .feature-card .cover .top-tag {
            position: absolute;
            top: 8px;
            left: 8px;
            background: rgba(0, 0, 0, 0.7);
            color: #fff;
            font-size: 0.7rem;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        .feature-card .feature-body {
            padding: 14px 16px;
        }

        .feature-card .feature-body h3 {
            font-size: 0.88rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .feature-card .feature-body p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* News Section */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 0.5fr;
            gap: 20px;
        }

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

        .news-item {
            background: #fff;
            border-radius: var(--radius);
            padding: 16px 18px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--border-strong);
            transform: translateY(-1px);
        }

        .news-item .news-date {
            flex-shrink: 0;
            width: 52px;
            text-align: center;
            background: var(--bg-alt);
            border-radius: 8px;
            padding: 8px 4px;
            border: 1px solid var(--border);
        }

        .news-item .news-date .day {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .news-item .news-date .month {
            font-size: 0.7rem;
            color: var(--text-weak);
        }

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

        .news-item .news-content h3 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .news-item .news-content p {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin: 0 0 6px;
            line-height: 1.6;
        }

        .news-item .news-content .news-meta {
            font-size: 0.72rem;
            color: var(--text-weak);
            display: flex;
            gap: 12px;
        }

        .news-sidebar {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            padding: 16px;
        }

        .news-sidebar h3 {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .news-sidebar .side-item {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .news-sidebar .side-item:last-child {
            border-bottom: none;
        }

        .news-sidebar .side-item h4 {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 4px;
            line-height: 1.4;
        }

        .news-sidebar .side-item p {
            font-size: 0.72rem;
            color: var(--text-weak);
            margin: 0;
        }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-weak);
            font-size: 0.9rem;
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border-strong);
        }

        .empty-state i {
            font-size: 2rem;
            display: block;
            margin-bottom: 12px;
            color: var(--border-strong);
        }

        /* Partners */
        .partners-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .partner-chip {
            padding: 12px 20px;
            background: #fff;
            border-radius: 8px;
            border: 1px solid var(--border);
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            cursor: default;
        }

        .partner-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow);
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            margin-bottom: 10px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }

        .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
            transition: color var(--transition);
            user-select: none;
        }

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

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

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

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

        .faq-answer-inner {
            padding: 0 20px 16px;
        }

        /* Guarantee Bar */
        .guarantee-bar {
            background: var(--primary-light);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(47, 111, 237, 0.2);
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text);
            font-weight: 500;
        }

        .guarantee-item i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: 16px;
            padding: 36px 32px;
            display: grid;
            grid-template-columns: 1fr 0.8fr;
            gap: 24px;
            align-items: center;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.88rem;
            margin: 0;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 11px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.88rem;
            outline: none;
            transition: all var(--transition);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .cta-form input:focus {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.6);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
        }

        .cta-form .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 11px 24px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-form .btn-white:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        /* Footer */
        .site-footer {
            background: #1c2a3a;
            color: rgba(255, 255, 255, 0.75);
            padding: 36px 0 20px;
            margin-top: 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 24px;
            margin-bottom: 24px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .footer-brand p {
            font-size: 0.8rem;
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 6px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.8rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 14px;
            font-size: 0.75rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Responsive */
        @media (max-width: 64em) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .hero-title {
                font-size: 1.7rem;
            }

            .podium-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }

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

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

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

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

            .news-layout {
                grid-template-columns: 1fr;
            }

            .cta-section {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .cta-form {
                justify-content: center;
            }

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

        @media (max-width: 40em) {
            :root {
                --spacing-section: 36px;
            }

            section {
                padding: 32px 0;
            }

            .brand-row {
                padding: 10px 0;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .search-box input {
                width: 130px;
                font-size: 0.78rem;
                padding: 7px 28px 7px 12px;
            }

            .login-link {
                padding: 7px 12px;
                font-size: 0.75rem;
            }

            .channel-row {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .hero-section {
                padding: 36px 0 32px;
            }

            .hero-title {
                font-size: 1.4rem;
            }

            .hero-lead {
                font-size: 0.85rem;
            }

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

            .hero-actions .btn {
                width: 100%;
            }

            .hero-visual {
                padding: 16px;
            }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

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

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

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

            .section-heading h2 {
                font-size: 1.2rem;
            }

            .section-heading p {
                font-size: 0.85rem;
            }

            .dimension-bar {
                padding: 14px 16px;
                gap: 8px;
            }

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

            .cta-section {
                padding: 24px 18px;
            }

            .cta-section h2 {
                font-size: 1.1rem;
            }

            .cta-form {
                flex-direction: column;
            }

            .cta-form input {
                min-width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .footer-brand h3 {
                font-size: 1rem;
            }
        }

        @media (max-width: 30em) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .stat-item {
                padding: 14px;
            }

            .stat-item .stat-number {
                font-size: 1.3rem;
            }

            .podium-card {
                padding: 16px 14px;
            }
        }

/* roulang page: article */
:root {
            --primary: #2F6FED;
            --primary-dark: #1a56c4;
            --primary-light: #e8f0fe;
            --medal-gold: #D4A017;
            --medal-silver: #A8B4C0;
            --medal-bronze: #C97E3D;
            --bg: #F5F8FF;
            --bg-alt: #F8FAFE;
            --text: #1c2a3a;
            --text-secondary: #4a5a6e;
            --text-weak: #7a8a9e;
            --border: rgba(15, 35, 85, 0.06);
            --border-strong: rgba(15, 35, 85, 0.12);
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 6px 24px rgba(31, 56, 100, 0.06);
            --shadow-hover: 0 12px 36px rgba(31, 56, 100, 0.12);
            --spacing-section: 56px;
            --spacing-card: 18px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
body {
            font-family: var(--font-family);
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
a:hover {
            color: var(--primary-dark);
        }
img {
            max-width: 100%;
            height: auto;
            display: block;
        }
button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }
.container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }
/* Header */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(31, 56, 100, 0.06);
        }
.brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
.brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }
.brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
.brand-logo span {
            color: var(--text);
        }
.brand-logo span em {
            font-style: normal;
            color: var(--primary);
        }
.brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }
.search-box {
            position: relative;
            display: flex;
            align-items: center;
        }
.search-box input {
            width: 200px;
            padding: 8px 32px 8px 14px;
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            font-size: 0.85rem;
            outline: none;
            background: var(--bg-alt);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
.search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.12);
            background: #fff;
        }
.search-box .search-icon {
            position: absolute;
            right: 12px;
            color: var(--text-weak);
            font-size: 0.8rem;
            pointer-events: none;
        }
.channel-row {
            display: flex;
            align-items: center;
            gap: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0;
        }
.channel-row::-webkit-scrollbar {
            display: none;
        }
.channel-tab {
            display: inline-flex;
            align-items: center;
            padding: 12px 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
            cursor: pointer;
        }
.channel-tab:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
.channel-tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
.hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background var(--transition);
        }
.hamburger-btn:hover {
            background: var(--bg-alt);
        }
.mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 8px 16px 16px;
        }
.mobile-menu.open {
            display: flex;
        }
.mobile-menu .channel-tab {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border);
        }
.mobile-menu .channel-tab:last-child {
            border-bottom: none;
        }
/* Breadcrumb */
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
.breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-weak);
            margin: 0;
            list-style: none;
            padding: 0;
        }
.breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
.breadcrumb li:not(:last-child)::after {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.7rem;
            color: var(--text-weak);
            margin-left: 4px;
        }
.breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
.breadcrumb a:hover {
            color: var(--primary);
        }
.breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }
/* Article Hero (narrow) */
        .article-hero-section {
            background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 60%, #f8faff 100%);
            padding: 32px 0 24px;
            border-bottom: 1px solid var(--border);
        }
.article-hero-inner {
            max-width: 860px;
            margin: 0 auto;
        }
.article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
.article-hero-inner h1 {
            font-size: 1.9rem;
            line-height: 1.35;
            color: var(--text);
            margin: 0 0 14px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
.article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-weak);
        }
.article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
.article-meta-row i {
            color: var(--primary);
            font-size: 0.78rem;
        }
/* Article Body */
        .article-body-section {
            padding: 32px 0 48px;
            background: #fff;
        }
.article-body-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }
.article-content-area {
            max-width: 760px;
        }
.article-content {
            font-size: 0.97rem;
            line-height: 1.85;
            color: var(--text);
        }
.article-content p {
            margin-bottom: 1.2rem;
        }
.article-content h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin: 2rem 0 0.8rem;
            padding-left: 12px;
            border-left: 3px solid var(--primary);
            line-height: 1.4;
        }
.article-content h3 {
            font-size: 1.12rem;
            font-weight: 600;
            color: var(--text);
            margin: 1.6rem 0 0.6rem;
        }
.article-content blockquote {
            margin: 1.6rem 0;
            padding: 16px 20px;
            background: var(--bg-alt);
            border-left: 4px solid var(--medal-gold);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-size: 0.92rem;
        }
.article-content img {
            border-radius: var(--radius);
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }
.article-content ul,
.article-content ol {
            margin: 0.8rem 0 1.2rem;
            padding-left: 1.5rem;
        }
.article-content li {
            margin-bottom: 0.4rem;
        }
.article-content a {
            font-weight: 500;
            border-bottom: 1px solid rgba(47, 111, 237, 0.3);
        }
.article-content a:hover {
            border-bottom-color: var(--primary);
        }
.article-not-found {
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border-strong);
        }
.article-not-found i {
            font-size: 2.5rem;
            color: var(--text-weak);
            margin-bottom: 16px;
        }
.article-not-found h3 {
            font-size: 1.2rem;
            color: var(--text);
            margin-bottom: 8px;
        }
.article-not-found p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
/* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 120px;
            align-self: start;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
.sidebar-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
        }
.sidebar-card h4 {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
.sidebar-card h4 i {
            color: var(--primary);
            font-size: 0.85rem;
        }
.sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
.sidebar-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.82rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
.sidebar-list li:last-child {
            border-bottom: none;
        }
.sidebar-list li i {
            color: var(--medal-gold);
            font-size: 0.7rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
.sidebar-list li a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
.sidebar-list li a:hover {
            color: var(--primary);
        }
.score-ring {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 12px;
        }
.score-ring .ring-value {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
.score-ring .ring-info {
            display: flex;
            flex-direction: column;
        }
.score-ring .ring-info strong {
            font-size: 0.95rem;
            color: var(--text);
        }
.score-ring .ring-info span {
            font-size: 0.78rem;
            color: var(--text-weak);
        }
/* Related Section */
        .related-section {
            padding: 48px 0 56px;
            background: var(--bg);
        }
.section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 12px;
        }
.section-header h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
.section-header h2 i {
            color: var(--primary);
            font-size: 1.1rem;
        }
.section-header .section-link {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 500;
        }
.related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
.related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
        }
.related-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
.related-card .card-image {
            height: 140px;
            overflow: hidden;
            position: relative;
        }
.related-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
.related-card:hover .card-image img {
            transform: scale(1.05);
        }
.related-card .rank-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            z-index: 2;
        }
.rank-badge.gold {
            background: var(--medal-gold);
        }
.rank-badge.silver {
            background: var(--medal-silver);
        }
.rank-badge.bronze {
            background: var(--medal-bronze);
        }
.related-card .card-body {
            padding: 14px 16px 16px;
        }
.related-card .card-body h3 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.45;
        }
.related-card .card-body h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
.related-card .card-body h3 a:hover {
            color: var(--primary);
        }
.related-card .card-meta {
            font-size: 0.75rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 10px;
        }
.related-card .card-meta i {
            color: var(--primary);
        }
/* Back & Subscribe */
        .back-subscribe-section {
            padding: 48px 0 56px;
            background: #fff;
            border-top: 1px solid var(--border);
        }
.back-subscribe-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }
.back-card {
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
.back-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
.back-card .back-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.1rem;
        }
.back-card h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            margin: 0;
        }
.back-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin: 0;
        }
.btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 8px;
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            line-height: 1.4;
        }
.btn-primary {
            background: var(--primary);
            color: #fff;
        }
.btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(47, 111, 237, 0.25);
        }
.btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
.btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
.subscribe-card {
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
            border-radius: var(--radius);
            padding: 24px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 12px;
        }
.subscribe-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }
.subscribe-card p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
        }
.subscribe-form {
            display: flex;
            gap: 10px;
            margin-top: 4px;
        }
.subscribe-form input {
            flex: 1;
            padding: 10px 14px;
            border: none;
            border-radius: 8px;
            font-size: 0.85rem;
            outline: none;
            background: #fff;
            color: var(--text);
        }
.subscribe-form input:focus {
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }
.subscribe-form button {
            padding: 10px 16px;
            background: var(--medal-gold);
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
            transition: background var(--transition), transform var(--transition);
        }
.subscribe-form button:hover {
            background: #b8910f;
            transform: translateY(-1px);
        }
/* Footer */
        .site-footer {
            background: #1a2634;
            color: #b8c4d4;
            padding: 48px 0 20px;
        }
.footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
.footer-brand h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
        }
.footer-brand p {
            font-size: 0.82rem;
            color: #8e9fb2;
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
.footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px;
        }
.footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
.footer-col ul li {
            margin-bottom: 8px;
        }
.footer-col ul li a {
            color: #8e9fb2;
            font-size: 0.82rem;
            transition: color var(--transition);
        }
.footer-col ul li a:hover {
            color: #fff;
        }
.footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 16px;
            font-size: 0.78rem;
            color: #6e7f92;
            text-align: center;
        }
/* Responsive */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-body-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 36px;
            }
            .brand-row {
                padding: 10px 0;
            }
            .brand-logo {
                font-size: 1.05rem;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .search-box input {
                width: 140px;
                font-size: 0.78rem;
                padding: 6px 28px 6px 10px;
            }
            .hamburger-btn {
                display: block;
            }
            .channel-row {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
            .article-hero-inner h1 {
                font-size: 1.45rem;
            }
            .article-meta-row {
                gap: 10px;
                font-size: 0.75rem;
            }
            .article-body-section {
                padding: 24px 0 36px;
            }
            .article-content {
                font-size: 0.92rem;
                line-height: 1.75;
            }
            .article-content h2 {
                font-size: 1.15rem;
                margin: 1.5rem 0 0.6rem;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .related-card .card-image {
                height: 110px;
            }
            .related-card .card-body h3 {
                font-size: 0.8rem;
            }
            .back-subscribe-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card .card-image {
                height: 160px;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-card {
                min-width: auto;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .article-hero-inner h1 {
                font-size: 1.25rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-header h2 {
                font-size: 1.15rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2F6FED;
            --primary-dark: #1a56c4;
            --primary-light: #e8f0fe;
            --medal-gold: #D4A017;
            --medal-silver: #A8B4C0;
            --medal-bronze: #C97E3D;
            --bg: #F5F8FF;
            --bg-alt: #F8FAFE;
            --text: #1c2a3a;
            --text-secondary: #4a5a6e;
            --text-weak: #7a8a9e;
            --border: rgba(15, 35, 85, 0.06);
            --border-strong: rgba(15, 35, 85, 0.12);
            --radius: 10px;
            --radius-sm: 6px;
            --shadow: 0 6px 24px rgba(31, 56, 100, 0.06);
            --shadow-hover: 0 12px 36px rgba(31, 56, 100, 0.12);
            --spacing-section: 56px;
            --spacing-card: 18px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-family);
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--primary-dark);
        }

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

        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        /* Header */
        .site-header {
            background: #fff;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(31, 56, 100, 0.06);
        }

        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary) 0%, #5a8ef5 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

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

        .brand-logo span em {
            font-style: normal;
            color: var(--primary);
        }

        .brand-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .search-box input {
            width: 200px;
            padding: 8px 32px 8px 14px;
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            font-size: 0.85rem;
            outline: none;
            background: var(--bg-alt);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.12);
            background: #fff;
        }

        .search-box .search-icon {
            position: absolute;
            right: 12px;
            color: var(--text-weak);
            font-size: 0.8rem;
            pointer-events: none;
        }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0;
        }

        .channel-row::-webkit-scrollbar {
            display: none;
        }

        .channel-tab {
            display: inline-flex;
            align-items: center;
            padding: 13px 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
        }

        .channel-tab:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }

        .channel-tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .hamburger-btn:hover {
            background: var(--bg-alt);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 8px 16px 16px;
        }

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

        .mobile-menu .channel-tab {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border);
        }

        .mobile-menu .channel-tab:last-child {
            border-bottom: none;
        }

        /* Section Base */
        section {
            padding: var(--spacing-section) 0;
        }

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

        .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        /* Breadcrumb */
        .breadcrumb-row {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-weak);
            padding: 16px 0;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-row .current {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb-row .separator {
            color: var(--text-weak);
            font-size: 0.7rem;
        }

        /* Category Hero Strip */
        .cat-hero-strip {
            position: relative;
            padding: 36px 0 28px;
            background: linear-gradient(135deg, #f0f5ff 0%, #e8f0fe 50%, #f8faff 100%);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .cat-hero-strip::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(47, 111, 237, 0.05);
            pointer-events: none;
        }

        .cat-hero-strip::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(212, 160, 23, 0.06);
            pointer-events: none;
        }

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

        .cat-hero-text {
            flex: 1 1 60%;
            min-width: 280px;
        }

        .cat-hero-text h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .cat-hero-text .cat-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 640px;
        }

        .cat-stats-row {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .cat-stat-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 6px 14px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            box-shadow: 0 2px 8px rgba(31, 56, 100, 0.04);
        }

        .cat-stat-pill .stat-icon {
            color: var(--primary);
            font-size: 0.8rem;
        }

        .cat-stat-pill .stat-num {
            font-weight: 700;
            color: var(--text);
        }

        .cat-cover-thumb {
            flex: 0 0 220px;
            max-width: 220px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .cat-cover-thumb img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        /* Ranking Cards */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
            gap: 22px;
            margin-top: 10px;
        }

        .rank-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .rank-card.top-card {
            border-top: 3px solid var(--medal-gold);
        }

        .rank-card.silver-card {
            border-top: 3px solid var(--medal-silver);
        }

        .rank-card.bronze-card {
            border-top: 3px solid var(--medal-bronze);
        }

        .rank-card-image {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

        .rank-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

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

        .medal-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            background: var(--medal-gold);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
            z-index: 2;
        }

        .medal-badge.medal-silver {
            background: var(--medal-silver);
        }

        .medal-badge.medal-bronze {
            background: var(--medal-bronze);
        }

        .medal-badge.rank-number {
            background: var(--text-secondary);
            font-size: 0.8rem;
        }

        .rank-card-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .rank-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.35;
        }

        .rank-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .rank-score {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
        }

        .rank-score small {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--text-weak);
        }

        .rank-stars {
            color: #f5a623;
            font-size: 0.85rem;
            letter-spacing: 1px;
        }

        .rank-card-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .rank-params {
            list-style: none;
            padding: 0;
            margin: 0 0 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .rank-params li {
            font-size: 0.82rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .rank-params li .param-icon {
            color: var(--primary);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        .rank-fit {
            font-size: 0.82rem;
            color: var(--text-weak);
            font-style: italic;
            border-top: 1px dashed var(--border-strong);
            padding-top: 10px;
            margin-top: auto;
        }

        /* Comparison Strip */
        .compare-strip {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 18px 20px;
            margin-top: 22px;
        }

        .compare-strip h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }

        .compare-item {
            padding: 14px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--primary);
        }

        .compare-item .compare-name {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
        }

        .compare-item .compare-score {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .compare-item .compare-stars {
            color: #f5a623;
            font-size: 0.8rem;
        }

        .compare-item .compare-note {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Tag Index Section */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--border-strong);
            border-radius: 20px;
            padding: 8px 16px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        .tag-link .tag-count {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            padding: 1px 8px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* Update List */
        .update-list {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .update-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
            flex-wrap: wrap;
        }

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

        .update-item:hover {
            background: var(--bg-alt);
        }

        .update-date {
            flex-shrink: 0;
            width: 76px;
            text-align: center;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            padding: 6px 4px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.78rem;
            line-height: 1.3;
        }

        .update-body {
            flex: 1;
            min-width: 200px;
        }

        .update-title {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
            line-height: 1.4;
        }

        .update-desc {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .update-tag {
            flex-shrink: 0;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 2px 10px;
            font-size: 0.75rem;
            color: var(--text-weak);
        }

        /* Rules/Help Section */
        .rules-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 18px;
        }

        .rule-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .rule-card .rule-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 12px;
        }

        .rule-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .rule-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius);
            padding: 36px 32px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: 0 12px 32px rgba(31, 56, 100, 0.2);
        }

        .subscribe-cta .cta-text {
            flex: 1;
            min-width: 240px;
        }

        .subscribe-cta h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .subscribe-cta p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.9);
            margin: 0;
            line-height: 1.6;
        }

        .subscribe-cta form {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .subscribe-cta input[type="email"] {
            width: 260px;
            max-width: 100%;
            padding: 12px 18px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            outline: none;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transition: background var(--transition), border-color var(--transition);
        }

        .subscribe-cta input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .subscribe-cta input[type="email"]:focus {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.6);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
        }

        .btn-subscribe {
            padding: 12px 24px;
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-subscribe:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
        }

        .btn-subscribe:focus {
            outline: 2px solid rgba(255, 255, 255, 0.6);
            outline-offset: 2px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(31, 56, 100, 0.2);
        }

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

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

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

        /* Footer */
        .site-footer {
            background: #1c2a3a;
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

        .footer-col ul a:hover {
            color: #fff;
        }

        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* Responsive */
        @media (max-width: 64em) {
            .ranking-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }

            .cat-hero-cover-thumb {
                flex-basis: 180px;
                max-width: 180px;
            }

            .cat-cover-thumb {
                flex-basis: 180px;
                max-width: 180px;
            }

            .cat-cover-thumb img {
                height: 120px;
            }
        }

        @media (max-width: 40em) {
            :root {
                --spacing-section: 36px;
            }

            section {
                padding: var(--spacing-section) 0;
            }

            .brand-row {
                flex-wrap: wrap;
                gap: 10px;
                padding: 10px 0;
            }

            .brand-logo {
                font-size: 1.1rem;
            }

            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .search-box input {
                width: 150px;
                font-size: 0.8rem;
                padding: 7px 28px 7px 10px;
            }

            .channel-row {
                display: none;
            }

            .hamburger-btn {
                display: inline-flex;
            }

            .mobile-menu {
                display: none;
            }

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

            .cat-hero-strip {
                padding: 24px 0 20px;
            }

            .cat-hero-inner {
                flex-direction: column;
                gap: 16px;
            }

            .cat-hero-text h1 {
                font-size: 1.5rem;
            }

            .cat-cover-thumb {
                flex-basis: 100%;
                max-width: 100%;
            }

            .cat-cover-thumb img {
                height: 140px;
            }

            .ranking-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .rank-card-image {
                height: 150px;
            }

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

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

            .subscribe-cta {
                padding: 24px 18px;
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-cta input[type="email"] {
                width: 100%;
            }

            .subscribe-cta form {
                width: 100%;
            }

            .btn-subscribe {
                width: 100%;
                justify-content: center;
            }

            .update-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 14px 16px;
            }

            .update-date {
                width: auto;
                padding: 3px 10px;
            }

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

            .section-title {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 30em) {
            .search-box {
                display: none;
            }

            .cat-stats-row {
                gap: 8px;
            }

            .cat-stat-pill {
                padding: 4px 10px;
                font-size: 0.78rem;
            }
        }