/* roulang page: index */
:root {
            --primary: #1E3A5F;
            --primary-dark: #152A45;
            --accent: #D4A843;
            --accent-light: #E8C97A;
            --success: #2F6B5A;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --border: #E5E9F0;
            --text-primary: #1B2430;
            --text-secondary: #5A6577;
            --text-muted: #8A94A6;
            --danger: #C0392B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 12px rgba(27, 36, 48, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(27, 36, 48, 0.12);
            --shadow-btn: 0 4px 10px rgba(30, 58, 95, 0.15);
            --shadow-btn-hover: 0 6px 18px rgba(30, 58, 95, 0.2);
            --font-stack: 'SF Pro Display', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
            --spacing-section: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-primary);
            line-height: 1.3;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: 22px;
            font-weight: 600;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 17px;
            font-weight: 600;
        }

        p {
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

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

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 1px 0 var(--border);
        }

        .header-top {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-bottom: 1px solid var(--border);
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0;
            position: relative;
        }

        .logo-icon::after {
            content: '';
            position: absolute;
            bottom: 4px;
            right: 4px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid #fff;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-inline {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            height: 40px;
            width: 180px;
            padding: 0 12px;
            gap: 8px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .search-inline:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
        }

        .search-inline svg {
            width: 16px;
            height: 16px;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .search-inline input {
            border: none;
            background: transparent;
            width: 100%;
            font-size: 13px;
            color: var(--text-primary);
            outline: none;
        }

        .search-inline input::placeholder {
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            line-height: 1.2;
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 13px;
        }

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

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

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-btn);
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            box-shadow: 0 2px 6px rgba(27, 36, 48, 0.05);
        }

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

        .btn-accent {
            background: linear-gradient(135deg, var(--accent) 0%, #C4932F 100%);
            color: #fff;
            box-shadow: 0 4px 12px rgba(212, 168, 67, 0.35);
        }

        .btn-accent:hover {
            background: linear-gradient(135deg, #C4932F 0%, #B0861E 100%);
            color: #fff;
            box-shadow: 0 6px 18px rgba(212, 168, 67, 0.45);
            transform: translateY(-1px);
        }

        .btn-lg {
            height: 48px;
            padding: 0 32px;
            font-size: 15px;
        }

        .btn-full {
            width: 100%;
        }

        .header-tabs {
            background: var(--bg);
            height: 48px;
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 16px;
        }

        .header-tabs::-webkit-scrollbar {
            display: none;
        }

        .header-tabs .container {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0;
            flex-wrap: nowrap;
        }

        .tab-pill {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #fff;
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .tab-pill:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: #fff;
        }

        .tab-pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            position: relative;
        }

        .tab-pill.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* ========== Sections ========== */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-title {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header.center {
            text-align: center;
        }

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

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

        .text-green {
            color: var(--success);
        }

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

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            background: var(--bg);
            color: var(--primary);
            border: 1px solid var(--border);
        }

        .badge-accent {
            background: rgba(212, 168, 67, 0.12);
            color: var(--accent);
            border-color: rgba(212, 168, 67, 0.3);
        }

        .badge-green {
            background: rgba(47, 107, 90, 0.1);
            color: var(--success);
            border-color: rgba(47, 107, 90, 0.2);
        }

        /* ========== Hero ========== */
        .hero {
            background: linear-gradient(180deg, #F5F7FA 0%, #FFFFFF 100%);
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231E3A5F' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
            opacity: 0.6;
        }

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

        .hero-content {
            max-width: 560px;
        }

        .hero-badge-row {
            display: flex;
            gap: 8px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .hero h1 {
            font-size: 32px;
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .hero-description {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 24px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-image-wrapper {
            width: 100%;
            max-width: 520px;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--primary);
            box-shadow: 0 12px 32px rgba(30, 58, 95, 0.12);
            position: relative;
            background: #fff;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            display: block;
        }

        .countdown-ring {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.92);
            border: 3px solid var(--accent);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
            z-index: 2;
        }

        .countdown-number {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }

        .countdown-label {
            font-size: 10px;
            color: var(--text-muted);
            letter-spacing: 0.08em;
            margin-top: 2px;
        }

        .hero-point-list {
            margin-top: 16px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-point {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-point::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* ========== Metrics ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 0;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .metric-item {
            padding: 28px 20px;
            text-align: center;
            border-right: 1px solid var(--border);
            position: relative;
        }

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

        .metric-value {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .metric-value.alt {
            color: var(--accent);
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* ========== Game Entry Cards ========== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

        .game-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(30, 58, 95, 0.2);
        }

        .game-card-image {
            width: 100%;
            height: 150px;
            overflow: hidden;
            position: relative;
        }

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

        .game-card:hover .game-card-image img {
            transform: scale(1.05);
        }

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

        .game-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .game-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

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

        .game-card-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }

        .game-card-link:hover::after {
            transform: translateX(4px);
        }

        /* ========== Service Matrix ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .service-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            text-align: left;
            transition: all var(--transition-smooth);
        }

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

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(30, 58, 95, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .service-card p {
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== Feature Highlights ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 22px 18px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition-smooth);
        }

        .feature-card:hover {
            border-color: rgba(30, 58, 95, 0.25);
            box-shadow: var(--shadow-card);
        }

        .feature-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            margin: 0 auto 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
        }

        .feature-card h3 {
            font-size: 15px;
            margin-bottom: 6px;
        }

        .feature-card p {
            font-size: 13px;
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ========== Comparison ========== */
        .comparison-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .comparison-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .comparison-card.featured {
            border: 2px solid var(--primary);
            position: relative;
        }

        .comparison-card.featured::before {
            content: '瓦力棋牌优势';
            position: absolute;
            top: -12px;
            left: 24px;
            background: var(--primary);
            color: #fff;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            font-size: 11px;
            font-weight: 600;
        }

        .comparison-card h3 {
            font-size: 17px;
            margin-bottom: 16px;
        }

        .comparison-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 13px;
        }

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

        .comparison-label {
            color: var(--text-secondary);
        }

        .comparison-value {
            font-weight: 600;
            color: var(--text-primary);
        }

        .comparison-value.good {
            color: var(--success);
        }

        .comparison-value.weak {
            color: var(--text-muted);
        }

        /* ========== Brand Intro ========== */
        .brand-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 64px 0;
            color: #fff;
            border-radius: var(--radius-card);
            margin: 0 24px;
            position: relative;
            overflow: hidden;
            margin-bottom: var(--spacing-section);
        }

        .brand-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(212, 168, 67, 0.15);
            pointer-events: none;
        }

        .brand-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .brand-section .container {
            position: relative;
            z-index: 1;
            max-width: 860px;
        }

        .brand-section h2 {
            color: #fff;
            font-size: 22px;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .brand-text {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            line-height: 2;
            margin-bottom: 0;
        }

        .brand-highlight {
            color: var(--accent-light);
            font-weight: 600;
        }

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

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--border);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 20px;
        }

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

        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            z-index: 1;
        }

        .timeline-dot.accent {
            border-color: var(--accent);
        }

        .timeline-year {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.04em;
            margin-bottom: 2px;
        }

        .timeline-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .timeline-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== News List ========== */
        .news-list {
            display: grid;
            gap: 16px;
        }

        .news-item {
            display: grid;
            grid-template-columns: 300px 1fr;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

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

        .news-cover {
            width: 100%;
            height: 180px;
            overflow: hidden;
        }

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

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

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .news-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .news-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }

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

        .news-link::after {
            content: '→';
        }

        /* ========== Security ========== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .security-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px;
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition-smooth);
        }

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

        .security-icon {
            font-size: 28px;
            margin-bottom: 12px;
            color: var(--success);
        }

        .security-card h3 {
            font-size: 15px;
            margin-bottom: 6px;
        }

        .security-card p {
            font-size: 13px;
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ========== Quick Links ========== */
        .quick-links-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .quick-link-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 18px 16px;
            text-align: center;
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            transition: all var(--transition-fast);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

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

        /* ========== FAQ ========== */
        .faq-list {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            gap: 12px;
            transition: background var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            background: var(--bg);
        }

        .faq-question-text {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-toggle-icon {
            font-size: 18px;
            color: var(--text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
            font-weight: 400;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth);
            padding: 0 24px 0 62px;
        }

        .faq-item.open .faq-answer {
            max-height: 280px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== Multi-device ========== */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .device-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 26px 20px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

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

        .device-emoji {
            font-size: 36px;
            margin-bottom: 10px;
        }

        .device-card h3 {
            font-size: 15px;
            margin-bottom: 6px;
        }

        .device-card p {
            font-size: 13px;
            line-height: 1.65;
            margin-bottom: 0;
        }

        .device-image-wrapper {
            width: 100%;
            height: 120px;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .device-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== Community / Reviews ========== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .review-stars {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 10px;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--border);
        }

        .review-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .review-meta {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* ========== Form ========== */
        .form-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 64px 0;
            border-radius: var(--radius-card);
            margin: 0 24px;
        }

        .form-section .container {
            max-width: 620px;
        }

        .form-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 36px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
        }

        .form-card h2 {
            font-size: 20px;
            margin-bottom: 6px;
            text-align: center;
        }

        .form-subtitle {
            font-size: 14px;
            color: var(--text-secondary);
            text-align: center;
            margin-bottom: 24px;
        }

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

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-primary);
            background: #fff;
            transition: all var(--transition-fast);
            outline: none;
        }

        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 120px;
            gap: 12px;
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-area {
            margin-bottom: 12px;
        }

        .footer-slogan {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }

        .footer-social {
            display: flex;
            gap: 8px;
        }

        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-news-item {
            margin-bottom: 10px;
        }

        .footer-news-title {
            font-size: 13px;
            color: var(--text-secondary);
            display: block;
            line-height: 1.5;
        }

        .footer-news-date {
            font-size: 11px;
            color: var(--text-muted);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1023px) {
            .container {
                padding: 0 20px;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-image-wrapper {
                max-width: 100%;
            }
            .hero-image-wrapper img {
                height: 260px;
            }
            .metrics-grid {
                grid-template-columns: repeat(3, 1fr);
                overflow-x: auto;
                gap: 0;
            }
            .metric-item {
                border-right: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
                min-width: 180px;
            }
            .metric-item:nth-child(3n) {
                border-right: none;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .quick-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .device-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-item {
                grid-template-columns: 250px 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .brand-section {
                margin-left: 20px;
                margin-right: 20px;
            }
            .form-section {
                margin-left: 20px;
                margin-right: 20px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --spacing-section: 56px;
            }
            h1 {
                font-size: 24px;
            }
            h2 {
                font-size: 19px;
            }
            .header-top {
                height: 56px;
                gap: 8px;
                padding: 0 8px;
            }
            .logo-text {
                font-size: 17px;
            }
            .search-inline {
                width: 120px;
                height: 36px;
            }
            .btn-sm {
                height: 36px;
                padding: 0 14px;
                font-size: 12px;
            }
            .header-tabs {
                height: 44px;
                padding: 0 8px;
            }
            .tab-pill {
                font-size: 12px;
                padding: 5px 12px;
            }
            .hero {
                padding: 48px 0 40px;
            }
            .hero h1 {
                font-size: 22px;
            }
            .hero-description {
                font-size: 14px;
            }
            .hero-cta-row {
                flex-direction: column;
            }
            .hero-cta-row .btn {
                width: 100%;
            }
            .hero-image-wrapper img {
                height: 200px;
            }
            .countdown-ring {
                width: 60px;
                height: 60px;
                top: 12px;
                right: 12px;
            }
            .countdown-number {
                font-size: 16px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                overflow-x: auto;
            }
            .metric-item {
                min-width: 130px;
                padding: 18px 12px;
                border-right: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
            }
            .metric-item:nth-child(2n) {
                border-right: none;
            }
            .metric-value {
                font-size: 22px;
            }
            .metric-label {
                font-size: 11px;
            }
            .game-grid {
                grid-template-columns: 1fr;
            }
            .game-card-image {
                height: 180px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .quick-links-grid {
                grid-template-columns: 1fr 1fr;
            }
            .device-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                grid-template-columns: 1fr;
            }
            .news-cover {
                height: 160px;
            }
            .news-body {
                padding: 14px 16px;
            }
            .comparison-wrap {
                grid-template-columns: 1fr;
            }
            .comparison-card {
                padding: 20px;
            }
            .brand-section {
                padding: 48px 20px;
                margin-left: 16px;
                margin-right: 16px;
                border-radius: 8px;
            }
            .brand-section h2 {
                font-size: 18px;
            }
            .brand-text {
                font-size: 13px;
            }
            .form-section {
                padding: 48px 16px;
                margin-left: px;
                margin-right: 16px;
                border-radius: 8px;
            }
            .form-section .container {
                max-width: 100%;
            }
            .form-card {
                padding: 24px 20px;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .quick-links-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-item {
                min-width: 100%;
                border-right: none;
                border-bottom: 1px solid var(--border);
            }
            .metric-item:last-child {
                border-bottom: none;
            }
            .game-card-image {
                height: 160px;
            }
            .news-cover {
                height: 140px;
            }
            .brand-section {
                padding: 40px 16px;
                margin-left: 12px;
                margin-right: 12px;
            }
            .form-section {
                padding: 40px 12px;
                margin-left: 12px;
                margin-right: 12px;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #1E3A5F;
        --primary-dark: #152A45;
        --accent: #D4A843;
        --accent-light: #E8C97A;
        --success: #2F6B5A;
        --bg: #F5F7FA;
        --card-bg: #FFFFFF;
        --border: #E5E9F0;
        --text-primary: #1B2430;
        --text-secondary: #5A6577;
        --text-muted: #8A94A6;
        --danger: #C0392B;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-pill: 999px;
        --shadow-card: 0 4px 12px rgba(27, 36, 48, 0.06);
        --shadow-card-hover: 0 8px 24px rgba(27, 36, 48, 0.12);
        --shadow-btn: 0 4px 10px rgba(30, 58, 95, 0.15);
        --shadow-btn-hover: 0 6px 18px rgba(30, 58, 95, 0.2);
        --font-stack: 'SF Pro Display', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
        --spacing-section: 80px;
        --container-max: 1200px;
        --transition-fast: 0.2s ease;
        --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
        font-family: var(--font-stack);
        font-size: 15px;
        line-height: 1.75;
        color: var(--text-primary);
        background-color: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
        border: 0;
    }

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
        border-radius: 4px;
    }

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

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

    ul,
    ol {
        list-style: none;
    }

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

    /* ========== Header / Navigation ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: #fff;
        box-shadow: 0 1px 0 var(--border);
    }

    .header-top {
        height: 64px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }

    .logo-area {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        font-size: 18px;
        letter-spacing: 0;
        position: relative;
    }

    .logo-icon::after {
        content: '';
        position: absolute;
        bottom: 4px;
        right: 4px;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        border: 2px solid #fff;
    }

    .logo-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.01em;
        white-space: nowrap;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }

    .search-inline {
        display: flex;
        align-items: center;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 6px;
        height: 40px;
        width: 180px;
        padding: 0 12px;
        gap: 8px;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }

    .search-inline:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    }

    .search-inline svg {
        width: 16px;
        height: 16px;
        color: var(--text-muted);
        flex-shrink: 0;
    }

    .search-inline input {
        border: none;
        background: transparent;
        width: 100%;
        font-size: 13px;
        color: var(--text-primary);
        outline: none;
    }

    .search-inline input::placeholder {
        color: var(--text-muted);
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 44px;
        padding: 0 24px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        transition: all var(--transition-smooth);
        white-space: nowrap;
        line-height: 1.2;
    }

    .btn-sm {
        height: 40px;
        padding: 0 18px;
        font-size: 13px;
    }

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

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

    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 1px solid var(--primary);
        box-shadow: none;
    }

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

    .btn-accent {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 4px 10px rgba(212, 168, 67, 0.25);
    }

    .btn-accent:hover {
        background: #c4963a;
        color: #fff;
        box-shadow: 0 6px 18px rgba(212, 168, 67, 0.35);
        transform: translateY(-1px);
    }

    .header-tabs {
        background: var(--bg);
        border-bottom: 1px solid var(--border);
    }

    .tabs-scroll {
        display: flex;
        align-items: center;
        gap: 8px;
        height: 48px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .tabs-scroll::-webkit-scrollbar {
        display: none;
    }

    .tab-pill {
        display: inline-flex;
        align-items: center;
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        font-size: 13px;
        font-weight: 500;
        color: var(--text-secondary);
        background: #fff;
        border: 1px solid var(--border);
        white-space: nowrap;
        transition: all var(--transition-smooth);
    }

    .tab-pill:hover {
        color: var(--primary);
        border-color: var(--primary);
    }

    .tab-pill.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        font-weight: 600;
    }

    /* ========== Category Header ========== */
    .category-header {
        background: #fff;
        border-bottom: 1px solid var(--border);
        padding: 40px 0 32px;
    }

    .category-header h1 {
        font-size: 32px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 12px;
        letter-spacing: -0.01em;
    }

    .category-header .category-desc {
        font-size: 16px;
        color: var(--text-secondary);
        max-width: 720px;
        line-height: 1.8;
    }

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

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        flex-wrap: wrap;
    }

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

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

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

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

    /* ========== Main Section Spacing ========== */
    .page-main section {
        padding: var(--spacing-section) 0;
    }

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

    .section-heading h2 {
        font-size: 22px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 8px;
        letter-spacing: -0.01em;
    }

    .section-heading p {
        font-size: 14px;
        color: var(--text-muted);
    }

    /* ========== Article Grid ========== */
    .article-grid-section {
        background: var(--bg);
    }

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

    .article-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all var(--transition-smooth);
        display: flex;
        flex-direction: column;
    }

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

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

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

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

    .article-card .card-body {
        padding: 20px 20px 18px;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .article-card .card-tag {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        background: rgba(212, 168, 67, 0.12);
        color: var(--accent);
        font-size: 12px;
        font-weight: 600;
        width: fit-content;
    }

    .article-card .card-title {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.45;
        margin: 0;
    }

    .article-card .card-title a {
        color: var(--text-primary);
        transition: color var(--transition-fast);
    }

    .article-card .card-title a:hover {
        color: var(--primary);
    }

    .article-card .card-desc {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin: 0;
    }

    .article-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: auto;
        padding-top: 10px;
        border-top: 1px solid var(--border);
    }

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

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

    .article-card .read-link:hover {
        color: var(--primary-dark);
    }

    .article-card .read-link .arrow {
        font-size: 15px;
        line-height: 1;
    }

    /* ========== Overview Section ========== */
    .overview-section {
        background: #fff;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

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

    .overview-text h2 {
        font-size: 22px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 16px;
    }

    .overview-text p {
        font-size: 15px;
        color: var(--text-secondary);
        line-height: 1.85;
        margin-bottom: 16px;
    }

    .overview-text p:last-child {
        margin-bottom: 0;
    }

    .overview-highlights {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .overview-highlight-item {
        display: flex;
        align-items: flex-start;
        gap: 14px;
        background: var(--bg);
        border-radius: var(--radius-card);
        padding: 18px 20px;
        border: 1px solid var(--border);
    }

    .overview-highlight-item .hl-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        font-weight: 700;
        flex-shrink: 0;
    }

    .overview-highlight-item .hl-text h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 4px;
    }

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

    /* ========== Hot Ranking ========== */
    .ranking-section {
        background: var(--bg);
    }

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

    .rank-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 20px;
        display: flex;
        align-items: center;
        gap: 14px;
        transition: all var(--transition-smooth);
    }

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

    .rank-number {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--accent) 0%, #c4963a 100%);
        color: #fff;
        font-weight: 700;
        font-size: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .rank-card:nth-child(1) .rank-number {
        background: linear-gradient(135deg, #D4A843 0%, #b8860b 100%);
    }

    .rank-card:nth-child(2) .rank-number {
        background: linear-gradient(135deg, #7a8a99 0%, #5a6577 100%);
    }

    .rank-card:nth-child(3) .rank-number {
        background: linear-gradient(135deg, #b8860b 0%, #8b6914 100%);
    }

    .rank-card .rank-info h3 {
        font-size: 14px;
        font-weight: 600;
        color: var(--text-primary);
        line-height: 1.4;
        margin-bottom: 4px;
    }

    .rank-card .rank-info h3 a {
        color: var(--text-primary);
    }

    .rank-card .rank-info h3 a:hover {
        color: var(--primary);
    }

    .rank-card .rank-info .rank-date {
        font-size: 12px;
        color: var(--text-muted);
    }

    /* ========== Related Topics ========== */
    .topics-section {
        background: #fff;
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
    }

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

    .topic-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: all var(--transition-smooth);
    }

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

    .topic-card .topic-thumb {
        aspect-ratio: 16/9;
        overflow: hidden;
    }

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

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

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

    .topic-card .topic-body h3 {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 6px;
    }

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

    /* ========== Subscribe CTA ========== */
    .subscribe-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: var(--radius-card);
        margin: var(--spacing-section) 24px;
        padding: 48px 40px;
        position: relative;
        overflow: hidden;
    }

    .subscribe-section::before {
        content: '';
        position: absolute;
        top: -60px;
        right: -60px;
        width: 240px;
        height: 240px;
        border-radius: 50%;
        background: rgba(212, 168, 67, 0.08);
        pointer-events: none;
    }

    .subscribe-section::after {
        content: '';
        position: absolute;
        bottom: -40px;
        left: 20%;
        width: 180px;
        height: 180px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.04);
        pointer-events: none;
    }

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

    .subscribe-text h2 {
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 8px;
    }

    .subscribe-text p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.75);
        max-width: 460px;
    }

    .subscribe-form {
        display: flex;
        gap: 10px;
        flex-shrink: 0;
    }

    .subscribe-form input {
        height: 44px;
        border-radius: var(--radius-btn);
        border: 1px solid rgba(255, 255, 255, 0.25);
        background: rgba(255, 255, 255, 0.1);
        padding: 0 16px;
        color: #fff;
        font-size: 14px;
        width: 260px;
        outline: none;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }

    .subscribe-form input::placeholder {
        color: rgba(255, 255, 255, 0.5);
    }

    .subscribe-form input:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.2);
    }

    /* ========== Extended Reading ========== */
    .extended-section {
        background: var(--bg);
    }

    .extended-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
        max-width: 800px;
    }

    .extended-item {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 16px 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        transition: all var(--transition-smooth);
    }

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

    .extended-item .ext-info h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 4px;
    }

    .extended-item .ext-info h3 a {
        color: var(--text-primary);
    }

    .extended-item .ext-info h3 a:hover {
        color: var(--primary);
    }

    .extended-item .ext-info p {
        font-size: 13px;
        color: var(--text-muted);
    }

    .extended-item .ext-arrow {
        font-size: 20px;
        color: var(--text-muted);
        flex-shrink: 0;
        transition: color var(--transition-fast);
    }

    .extended-item:hover .ext-arrow {
        color: var(--primary);
    }

    /* ========== Footer ========== */
    .site-footer {
        background: #fff;
        border-top: 1px solid var(--border);
        padding: 56px 0 24px;
        margin-top: 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 40px;
        margin-bottom: 32px;
    }

    .footer-brand .logo-area {
        margin-bottom: 12px;
    }

    .footer-slogan {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 16px;
    }

    .footer-social {
        display: flex;
        gap: 8px;
    }

    .social-icon {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--bg);
        border: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        color: var(--text-secondary);
        transition: all var(--transition-fast);
    }

    .social-icon:hover {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }

    .footer-col h3 {
        font-size: 14px;
        font-weight: 600;
        color: var(--text-primary);
        margin-bottom: 14px;
    }

    .footer-col ul li {
        margin-bottom: 8px;
    }

    .footer-col ul li a {
        font-size: 13px;
        color: var(--text-muted);
        transition: color var(--transition-fast);
    }

    .footer-col ul li a:hover {
        color: var(--primary);
    }

    .footer-news-item {
        margin-bottom: 12px;
    }

    .footer-news-title {
        display: block;
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.5;
        margin-bottom: 4px;
    }

    .footer-news-title:hover {
        color: var(--primary);
    }

    .footer-news-date {
        font-size: 12px;
        color: var(--text-muted);
    }

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

    .footer-bottom a {
        color: var(--text-muted);
        font-size: 12px;
    }

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

    .footer-bottom span:not(:last-child)::after {
        content: '';
        margin: 0 4px;
        color: var(--border);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .article-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .overview-wrap {
            grid-template-columns: 1fr;
            gap: 32px;
        }

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

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

        .footer-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --spacing-section: 56px;
        }

        .container {
            padding: 0 16px;
        }

        .header-top {
            height: 56px;
        }

        .logo-text {
            font-size: 17px;
        }

        .search-inline {
            width: 120px;
        }

        .header-cta {
            display: none;
        }

        .tabs-scroll {
            gap: 6px;
            height: 44px;
        }

        .tab-pill {
            padding: 5px 12px;
            font-size: 12px;
        }

        .category-header {
            padding: 28px 0 24px;
        }

        .category-header h1 {
            font-size: 24px;
        }

        .category-header .category-desc {
            font-size: 14px;
        }

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

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

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

        .subscribe-section {
            margin: var(--spacing-section) 16px;
            padding: 32px 24px;
        }

        .subscribe-inner {
            flex-direction: column;
            align-items: flex-start;
        }

        .subscribe-form {
            width: 100%;
            flex-direction: column;
        }

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

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

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-bottom span:not(:last-child)::after {
            display: none;
        }

        .section-heading h2 {
            font-size: 18px;
        }

        .extended-item {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
    }

    @media (max-width: 520px) {
        .header-actions .btn-sm {
            display: none;
        }

        .search-inline {
            width: 100%;
            flex: 1;
        }

        .article-card .card-thumb {
            aspect-ratio: 16/9;
        }

        .article-card .card-body {
            padding: 16px;
        }

        .overview-highlight-item {
            padding: 14px 16px;
        }

        .overview-highlight-item .hl-icon {
            width: 30px;
            height: 30px;
            font-size: 14px;
        }

        .rank-card {
            padding: 14px;
        }

        .rank-number {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }

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

        .subscribe-section {
            padding: 24px 20px;
        }

        .subscribe-text h2 {
            font-size: 18px;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #1E3A5F;
            --primary-dark: #152A45;
            --accent: #D4A843;
            --accent-light: #E8C97A;
            --success: #2F6B5A;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --border: #E5E9F0;
            --text-primary: #1B2430;
            --text-secondary: #5A6577;
            --text-muted: #8A94A6;
            --danger: #C0392B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 12px rgba(27, 36, 48, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(27, 36, 48, 0.12);
            --shadow-btn: 0 4px 10px rgba(30, 58, 95, 0.15);
            --shadow-btn-hover: 0 6px 18px rgba(30, 58, 95, 0.2);
            --font-stack: 'SF Pro Display', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
            --spacing-section: 72px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        h1,
        h2,
        h3,
        h4,
        p,
        ul,
        ol {
            margin-top: 0;
        }

        ul {
            padding-left: 0;
            list-style: none;
        }

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

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 1px 0 var(--border);
        }

        .header-top {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-bottom: 1px solid var(--border);
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0;
            position: relative;
        }

        .logo-icon::after {
            content: '';
            position: absolute;
            bottom: 4px;
            right: 4px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid #fff;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-inline {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            height: 40px;
            width: 180px;
            padding: 0 12px;
            gap: 8px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            font-size: 13px;
            color: var(--text-primary);
            outline: none;
        }

        .search-inline::placeholder {
            color: var(--text-muted);
        }

        .search-inline:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            line-height: 1.2;
            text-decoration: none;
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 13px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
            border: 1px solid var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            box-shadow: var(--shadow-btn-hover);
            color: #fff;
        }

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

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

        .btn-accent {
            background: var(--accent);
            color: #1B2430;
            border: 1px solid var(--accent);
            box-shadow: 0 4px 10px rgba(212, 168, 67, 0.25);
        }

        .btn-accent:hover {
            background: #C49A38;
            border-color: #C49A38;
            box-shadow: 0 6px 18px rgba(212, 168, 67, 0.35);
            color: #1B2430;
        }

        .header-tabs {
            background: var(--bg);
            min-height: 48px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
        }

        .tabs-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 6px 0;
        }

        .tabs-scroll::-webkit-scrollbar {
            display: none;
        }

        .tab-pill {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            background: #fff;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }

        .tab-pill:hover {
            background: var(--bg);
            color: var(--primary);
            border-color: var(--primary);
        }

        .tab-pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(30, 58, 95, 0.18);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 10px;
            user-select: none;
        }

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

        /* ========== Section common ========== */
        .section {
            padding: var(--spacing-section) 0;
        }

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

        .section-head {
            margin-bottom: 32px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .section-sub {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 680px;
        }

        /* ========== Category H1 Zone ========== */
        .cat-hero {
            padding: 48px 0 40px;
            background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
        }

        .cat-hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .cat-hero-text {
            flex: 1;
            min-width: 0;
        }

        .cat-hero-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #1B2430;
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .cat-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .cat-hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .cat-hero-visual {
            flex-shrink: 0;
            width: 360px;
            height: 240px;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            background: var(--card-bg);
        }

        .cat-hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== Article Cards Grid ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #D0D7E2;
        }

        .article-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg);
        }

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

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

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

        .article-tag {
            display: inline-flex;
            align-items: center;
            background: var(--bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            padding: 3px 12px;
            margin-bottom: 12px;
            width: fit-content;
            border: 1px solid var(--border);
        }

        .article-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .article-summary {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

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

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

        .article-link:hover {
            color: var(--primary-dark);
        }

        .article-link::after {
            content: '→';
            font-size: 14px;
            transition: transform var(--transition-fast);
        }

        .article-link:hover::after {
            transform: translateX(3px);
        }

        /* ========== Overview Block ========== */
        .overview-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px 36px;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .overview-text p {
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 14px;
        }

        .overview-text p:last-child {
            margin-bottom: 0;
        }

        .overview-points {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }

        .overview-point {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            background: var(--bg);
            border-radius: 8px;
            border: 1px solid var(--border);
        }

        .overview-point-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .overview-point strong {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .overview-point span {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== Ranking List ========== */
        .ranking-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-fast);
        }

        .ranking-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #D0D7E2;
        }

        .rank-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .rank-1 {
            background: #D4A843;
            color: #fff;
        }

        .rank-2 {
            background: #A8B6C5;
            color: #fff;
        }

        .rank-3 {
            background: #B8865B;
            color: #fff;
        }

        .rank-other {
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
        }

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

        .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .rank-desc {
            font-size: 13px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .rank-link:hover {
            color: var(--primary-dark);
        }

        /* ========== Topic Cards ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

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

        .topic-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg);
        }

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

        .topic-card:hover .topic-cover img {
            transform: scale(1.04);
        }

        .topic-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-title {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        /* ========== Subscribe / Follow ========== */
        .subscribe-box {
            background: var(--primary);
            border-radius: var(--radius-card);
            padding: 40px 44px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: 0 8px 28px rgba(30, 58, 95, 0.25);
            position: relative;
            overflow: hidden;
        }

        .subscribe-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(212, 168, 67, 0.18);
            pointer-events: none;
        }

        .subscribe-box::after {
            content: '';
            position: absolute;
            bottom: -70px;
            left: -30px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }

        .subscribe-text {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }

        .subscribe-text h2 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .subscribe-text p {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .subscribe-form input {
            height: 44px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.95);
            padding: 0 16px;
            font-size: 13px;
            color: var(--text-primary);
            width: 220px;
            outline: none;
            transition: all var(--transition-fast);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.25);
        }

        .subscribe-form .btn-accent {
            height: 44px;
            font-size: 13px;
            padding: 0 22px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .faq-item {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition-fast);
        }

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

        .faq-item:hover {
            background: #FAFBFD;
        }

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.6;
            cursor: default;
        }

        .faq-q-icon {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .faq-question-text {
            flex: 1;
        }

        .faq-answer {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-top: 10px;
            padding-left: 36px;
        }

        .faq-a-icon {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: var(--success);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .faq-answer-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1B2430;
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 0;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-area {
            margin-bottom: 12px;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

        .footer-brand .logo-icon {
            background: linear-gradient(135deg, #2A4A72 0%, #152A45 100%);
        }

        .footer-slogan {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 16px;
        }

        .footer-social {
            display: flex;
            gap: 8px;
        }

        .social-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: all var(--transition-fast);
        }

        .social-icon:hover {
            background: var(--accent);
            color: #1B2430;
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition-fast);
            font-size: 13px;
        }

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

        .footer-news-item {
            margin-bottom: 14px;
        }

        .footer-news-title {
            display: block;
            color: rgba(255, 255, 255, 0.72);
            font-size: 13px;
            line-height: 1.5;
            transition: color var(--transition-fast);
            margin-bottom: 2px;
        }

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

        .footer-news-date {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px 16px;
            padding: 20px 0;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
            }

            .cat-hero-inner {
                flex-direction: column;
                gap: 24px;
                align-items: flex-start;
            }

            .cat-hero-visual {
                width: 100%;
                height: 220px;
            }

            .cat-hero h1 {
                font-size: 26px;
            }

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

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

            .overview-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 768px) {
            :root {
                --spacing-section: 44px;
            }

            .container {
                padding: 0 18px;
            }

            .header-top {
                height: 56px;
                gap: 10px;
            }

            .logo-text {
                font-size: 17px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .search-inline {
                width: 130px;
                height: 36px;
                font-size: 12px;
            }

            .btn-sm {
                height: 36px;
                padding: 0 14px;
                font-size: 12px;
            }

            .header-tabs {
                min-height: 44px;
            }

            .tab-pill {
                height: 30px;
                padding: 0 12px;
                font-size: 12px;
            }

            .cat-hero {
                padding: 32px 0 28px;
            }

            .cat-hero h1 {
                font-size: 22px;
                line-height: 1.4;
            }

            .cat-hero-desc {
                font-size: 13.5px;
                line-height: 1.7;
            }

            .cat-hero-label {
                font-size: 11px;
                padding: 3px 10px;
            }

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

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

            .article-title {
                font-size: 15px;
            }

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

            .overview-card {
                padding: 22px 20px;
            }

            .subscribe-box {
                padding: 28px 24px;
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
            }

            .subscribe-form {
                width: 100%;
            }

            .subscribe-form input {
                flex: 1;
                width: 100%;
                min-width: 0;
            }

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

            .faq-item {
                padding: 16px 18px;
            }

            .faq-question {
                font-size: 14px;
            }

            .faq-answer {
                padding-left: 0;
                margin-top: 8px;
            }

            .faq-answer-text {
                font-size: 13px;
            }

            .ranking-item {
                padding: 14px 16px;
                gap: 12px;
            }

            .rank-num {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                padding-bottom: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 16px 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .header-top {
                gap: 8px;
            }

            .search-inline {
                display: none;
            }

            .header-actions .header-cta {
                height: 34px;
                padding: 0 12px;
                font-size: 11px;
            }

            .tabs-scroll {
                gap: 4px;
            }

            .tab-pill {
                height: 28px;
                padding: 0 10px;
                font-size: 11px;
            }

            :root {
                --spacing-section: 36px;
            }

            .section-title {
                font-size: 18px;
            }

            .cat-hero h1 {
                font-size: 19px;
            }

            .cat-hero-visual {
                height: 180px;
            }

            .article-body {
                padding: 16px 16px 18px;
            }

            .article-title {
                font-size: 14px;
            }

            .article-summary {
                font-size: 12.5px;
            }

            .article-tag {
                font-size: 11px;
                padding: 2px 10px;
            }

            .overview-text p {
                font-size: 13px;
            }

            .overview-point {
                padding: 10px 12px;
                gap: 10px;
            }

            .overview-point strong {
                font-size: 13px;
            }

            .overview-point span {
                font-size: 12px;
            }

            .topic-body {
                padding: 14px 16px 16px;
            }

            .topic-title {
                font-size: 14px;
            }

            .topic-desc {
                font-size: 12px;
            }

            .ranking-name {
                font-size: 13px;
            }

            .ranking-desc {
                font-size: 12px;
            }

            .subscribe-text h2 {
                font-size: 17px;
            }

            .subscribe-text p {
                font-size: 12px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1E3A5F;
            --primary-dark: #152A45;
            --accent: #D4A843;
            --accent-light: #E8C97A;
            --success: #2F6B5A;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --border: #E5E9F0;
            --text-primary: #1B2430;
            --text-secondary: #5A6577;
            --text-muted: #8A94A6;
            --danger: #C0392B;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 12px rgba(27, 36, 48, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(27, 36, 48, 0.12);
            --shadow-btn: 0 4px 10px rgba(30, 58, 95, 0.15);
            --shadow-btn-hover: 0 6px 18px rgba(30, 58, 95, 0.2);
            --font-stack: 'SF Pro Display', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
            --spacing-section: 80px;
            --container-max: 1200px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-primary);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

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

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 1px 0 var(--border);
        }

        .header-top {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-bottom: 1px solid var(--border);
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0;
            position: relative;
        }

        .logo-icon::after {
            content: '';
            position: absolute;
            bottom: 4px;
            right: 4px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            border: 2px solid #fff;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-inline {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            height: 40px;
            width: 180px;
            padding: 0 12px;
            gap: 8px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .search-inline:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
        }

        .search-inline svg {
            width: 16px;
            height: 16px;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .search-inline input {
            border: none;
            background: transparent;
            width: 100%;
            font-size: 13px;
            color: var(--text-primary);
            outline: none;
        }

        .search-inline input::placeholder {
            color: var(--text-muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            line-height: 1.2;
        }

        .btn-sm {
            height: 40px;
            padding: 0 18px;
            font-size: 13px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-btn-hover);
            color: #fff;
        }

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

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

        .header-tabs {
            background: var(--bg);
            height: 48px;
            display: flex;
            align-items: center;
        }

        .tabs-scroll {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            height: 100%;
            padding: 0 4px;
        }

        .tabs-scroll::-webkit-scrollbar {
            display: none;
        }

        .tab-pill {
            display: inline-flex;
            align-items: center;
            height: 34px;
            padding: 0 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #fff;
            border: 1px solid var(--border);
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .tab-pill:hover {
            color: var(--primary);
            border-color: var(--primary);
        }

        .tab-pill.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ========== Section base ========== */
        main {
            display: block;
        }

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

        .section-alt {
            background: #fff;
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* ========== Category hero ========== */
        .category-hero {
            background: linear-gradient(180deg, #f0f3f8 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
            padding: 56px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 20% 30%, rgba(212, 168, 67, 0.04) 0%, transparent 30%), radial-gradient(circle at 80% 70%, rgba(30, 58, 95, 0.04) 0%, transparent 30%);
            pointer-events: none;
        }

        .category-hero-content {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-wrapper {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: var(--text-muted);
            user-select: none;
        }

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

        /* ========== Article cards ========== */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #d5dbe5;
        }

        .article-card .card-cover {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #e8ecf2;
        }

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

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

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

        .card-tag {
            display: inline-flex;
            align-items: center;
            background: var(--bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            width: fit-content;
            letter-spacing: 0.02em;
        }

        .article-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .article-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .read-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .read-link:hover {
            color: var(--primary-dark);
            gap: 6px;
        }

        .read-link .arrow {
            font-size: 14px;
            line-height: 1;
        }

        /* ========== Overview section ========== */
        .overview-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .overview-card .overview-text h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .overview-card .overview-text p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 12px;
        }

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

        .overview-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .overview-list li .check-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(47, 107, 90, 0.1);
            color: var(--success);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            margin-top: 2px;
        }

        /* ========== Ranking list ========== */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .ranking-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #d5dbe5;
        }

        .rank-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
        }

        .rank-number.highlight {
            background: var(--accent);
        }

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

        .rank-info .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.45;
        }

        .rank-info .rank-desc {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-badge {
            flex-shrink: 0;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(212, 168, 67, 0.1);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
        }

        /* ========== Topic cards ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

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

        .topic-card .topic-cover {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #e8ecf2;
        }

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

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

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

        .topic-card .topic-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .topic-card .topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

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

        /* ========== Subscribe block ========== */
        .subscribe-block {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .subscribe-block .subscribe-text h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .subscribe-block .subscribe-text p {
            font-size: 14px;
            color: var(--text-secondary);
        }

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

        .subscribe-form input {
            height: 44px;
            padding: 0 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            background: var(--bg);
            min-width: 240px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
        }

        /* ========== FAQ ========== */
        .faq-wrapper {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            transition: background var(--transition-fast);
            user-select: none;
            -webkit-tap-highlight-color: transparent;
        }

        .faq-question:hover {
            background: #fafbfc;
        }

        .faq-question .q-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: rgba(30, 58, 95, 0.08);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-question .question-text {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
        }

        .faq-question .toggle-icon {
            flex-shrink: 0;
            font-size: 20px;
            font-weight: 300;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            line-height: 1;
        }

        .faq-item.open .toggle-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 20px 66px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-area {
            margin-bottom: 12px;
        }

        .footer-slogan {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .footer-social {
            display: flex;
            gap: 8px;
        }

        .social-icon {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: var(--bg);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: all var(--transition-fast);
            border: 1px solid var(--border);
        }

        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-news-item {
            margin-bottom: 12px;
        }

        .footer-news-title {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 2px;
            transition: color var(--transition-fast);
        }

        .footer-news-title:hover {
            color: var(--primary);
        }

        .footer-news-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

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

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .overview-card {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
            }

            .header-top {
                height: 56px;
            }

            .search-inline {
                display: none;
            }

            .header-tabs {
                height: 44px;
            }

            .tab-pill {
                height: 30px;
                padding: 0 14px;
                font-size: 13px;
            }

            .category-hero {
                padding: 36px 0 28px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .category-hero .hero-desc {
                font-size: 14px;
            }

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

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

            .section-title {
                font-size: 20px;
            }

            .overview-card {
                padding: 22px;
            }

            .subscribe-block {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }

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

            .ranking-item {
                padding: 14px;
                gap: 12px;
            }

            .rank-number {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .faq-question {
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px 16px 60px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 22px;
            }

            .btn {
                height: 40px;
                padding: 0 18px;
                font-size: 13px;
            }

            .article-card .card-body {
                padding: 16px 16px 18px;
            }

            .ranking-item {
                flex-wrap: wrap;
            }

            .rank-badge {
                margin-left: auto;
            }
        }

/* roulang page: category4 */
:root {
        --primary: #1E3A5F;
        --primary-dark: #152A45;
        --accent: #D4A843;
        --accent-light: #E8C97A;
        --success: #2F6B5A;
        --bg: #F5F7FA;
        --card-bg: #FFFFFF;
        --border: #E5E9F0;
        --text-primary: #1B2430;
        --text-secondary: #5A6577;
        --text-muted: #8A94A6;
        --danger: #C0392B;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-pill: 999px;
        --shadow-card: 0 4px 12px rgba(27, 36, 48, 0.06);
        --shadow-card-hover: 0 8px 24px rgba(27, 36, 48, 0.12);
        --shadow-btn: 0 4px 10px rgba(30, 58, 95, 0.15);
        --shadow-btn-hover: 0 6px 18px rgba(30, 58, 95, 0.2);
        --font-stack: 'SF Pro Display', 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
        --spacing-section: 80px;
        --container-max: 1200px;
        --transition-fast: 0.2s ease;
        --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    :root {
        --spacing-section: 56px;
    }

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

    body {
        font-family: var(--font-stack);
        font-size: 15px;
        line-height: 1.75;
        color: var(--text-primary);
        background-color: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
        border: 0;
    }

    a {
        color: var(--primary);
        text-decoration: none;
        transition: color var(--transition-fast);
    }
    a:hover {
        color: var(--primary-dark);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
        border-radius: 4px;
    }
    button {
        font-family: inherit;
        cursor: pointer;
        border: none;
        background: none;
        font-size: inherit;
    }
    input,
    textarea,
    select {
        font-family: inherit;
        font-size: inherit;
        color: inherit;
    }

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

    /* ========== Header / Navigation ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: #fff;
        box-shadow: 0 1px 0 var(--border);
    }
    .header-top {
        height: 64px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }
    .logo-area {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .logo-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-weight: 700;
        font-size: 18px;
        letter-spacing: 0;
        position: relative;
    }
    .logo-icon::after {
        content: '';
        position: absolute;
        bottom: 4px;
        right: 4px;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent);
        border: 2px solid #fff;
    }
    .logo-text {
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: -0.01em;
        white-space: nowrap;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .search-inline {
        display: flex;
        align-items: center;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 6px;
        height: 40px;
        width: 180px;
        padding: 0 12px;
        gap: 8px;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }
    .search-inline:focus-within {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    }
    .search-inline input {
        border: none;
        background: transparent;
        width: 100%;
        font-size: 13px;
        color: var(--text-primary);
        outline: none;
    }
    .search-inline input::placeholder {
        color: var(--text-muted);
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 44px;
        padding: 0 24px;
        border-radius: var(--radius-btn);
        font-size: 14px;
        font-weight: 600;
        transition: all var(--transition-smooth);
        white-space: nowrap;
        line-height: 1.2;
    }
    .btn-sm {
        height: 40px;
        padding: 0 18px;
        font-size: 13px;
    }
    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: var(--shadow-btn);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        color: #fff;
        box-shadow: var(--shadow-btn-hover);
        transform: translateY(-1px);
    }
    .btn-secondary {
        background: #fff;
        color: var(--primary);
        border: 1px solid var(--primary);
    }
    .btn-secondary:hover {
        background: var(--bg);
        color: var(--primary-dark);
        transform: translateY(-1px);
    }
    .btn-accent {
        background: var(--accent);
        color: #fff;
        box-shadow: 0 4px 10px rgba(212, 168, 67, 0.25);
    }
    .btn-accent:hover {
        background: #c49a3a;
        color: #fff;
        box-shadow: 0 6px 18px rgba(212, 168, 67, 0.35);
        transform: translateY(-1px);
    }

    .header-tabs {
        background: var(--bg);
        height: 48px;
        display: flex;
        align-items: center;
        border-bottom: 1px solid var(--border);
    }
    .tabs-scroll {
        display: flex;
        align-items: center;
        gap: 8px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
        width: 100%;
    }
    .tabs-scroll::-webkit-scrollbar {
        display: none;
    }
    .tab-pill {
        display: inline-flex;
        align-items: center;
        white-space: nowrap;
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        font-size: 13px;
        font-weight: 500;
        color: var(--text-secondary);
        background: #fff;
        border: 1px solid var(--border);
        transition: all var(--transition-fast);
        flex-shrink: 0;
    }
    .tab-pill:hover {
        color: var(--primary);
        border-color: var(--primary);
    }
    .tab-pill.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        font-weight: 600;
    }

    /* ========== Breadcrumbs ========== */
    .breadcrumb-area {
        padding: 20px 0 0;
        background: #fff;
    }
    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .breadcrumb span.sep {
        color: var(--text-muted);
    }
    .breadcrumb a {
        color: var(--text-secondary);
        transition: color var(--transition-fast);
    }
    .breadcrumb a:hover {
        color: var(--primary);
    }

    /* ========== Category H1 Header ========== */
    .category-header {
        padding: 32px 0 48px;
        background: #fff;
        border-bottom: 1px solid var(--border);
    }
    .category-header h1 {
        font-size: 32px;
        font-weight: 700;
        color: var(--text-primary);
        margin: 0 0 16px;
        letter-spacing: -0.01em;
    }
    .category-header .lead {
        font-size: 16px;
        color: var(--text-secondary);
        line-height: 1.8;
        max-width: 800px;
        margin: 0;
    }
    .category-header .badge-row {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 20px;
    }
    .badge-pill {
        display: inline-flex;
        align-items: center;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        font-size: 12px;
        font-weight: 500;
        background: var(--bg);
        color: var(--text-secondary);
        border: 1px solid var(--border);
    }
    .badge-pill.accent {
        background: rgba(212, 168, 67, 0.12);
        color: #a88730;
        border-color: rgba(212, 168, 67, 0.35);
    }

    /* ========== Section Base ========== */
    main {
        background: var(--bg);
    }
    .section {
        padding: var(--spacing-section) 0;
    }
    .section-alt {
        background: #fff;
        padding: var(--spacing-section) 0;
    }
    .section-title {
        font-size: 22px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0 0 8px;
        letter-spacing: -0.01em;
    }
    .section-sub {
        font-size: 14px;
        color: var(--text-muted);
        margin: 0 0 32px;
        line-height: 1.6;
    }

    /* ========== Article Cards (Vertical) ========== */
    .article-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        margin: 0;
    }
    .article-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        display: flex;
        flex-direction: column;
        transition: all var(--transition-smooth);
        flex: 1 1 calc(33.333% - 16px);
        min-width: 280px;
        max-width: calc(33.333% - 16px);
    }
    .article-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
    }
    .article-card .card-cover {
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 10;
        overflow: hidden;
        background: var(--bg);
    }
    .article-card .card-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition-smooth);
    }
    .article-card:hover .card-cover img {
        transform: scale(1.04);
    }
    .article-card .card-body {
        padding: 18px 20px 20px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .article-card .card-tag {
        display: inline-block;
        padding: 3px 10px;
        border-radius: var(--radius-pill);
        font-size: 11px;
        font-weight: 600;
        background: rgba(30, 58, 95, 0.08);
        color: var(--primary);
        margin-bottom: 10px;
        align-self: flex-start;
    }
    .article-card .card-title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0 0 8px;
        line-height: 1.5;
    }
    .article-card .card-excerpt {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0 0 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .article-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: auto;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }
    .article-card .card-date {
        font-size: 12px;
        color: var(--text-muted);
    }
    .article-card .read-link {
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .arrow-right {
        display: inline-block;
        width: 8px;
        height: 8px;
        border-top: 2px solid currentColor;
        border-right: 2px solid currentColor;
        transform: rotate(45deg);
        transition: transform var(--transition-fast);
    }
    .read-link:hover .arrow-right {
        transform: rotate(45deg) translateX(3px);
    }

    /* ========== Overview Block ========== */
    .overview-block {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 32px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
        align-items: start;
    }
    .overview-block .overview-text h2 {
        font-size: 20px;
        font-weight: 600;
        margin: 0 0 16px;
        color: var(--text-primary);
    }
    .overview-block .overview-text p {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
        margin: 0 0 12px;
    }
    .overview-block .overview-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .stat-item {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 20px;
        text-align: center;
        box-shadow: var(--shadow-card);
    }
    .stat-item .stat-num {
        font-size: 26px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 4px;
    }
    .stat-item .stat-label {
        font-size: 13px;
        color: var(--text-muted);
    }

    /* ========== Ranking List ========== */
    .ranking-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
        max-width: 800px;
    }
    .ranking-item {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 14px 18px;
        display: flex;
        align-items: center;
        gap: 16px;
        box-shadow: var(--shadow-card);
        transition: all var(--transition-fast);
    }
    .ranking-item:hover {
        box-shadow: var(--shadow-card-hover);
    }
    .ranking-num {
        font-size: 18px;
        font-weight: 700;
        width: 32px;
        height: 32px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        background: var(--bg);
        color: var(--text-muted);
    }
    .ranking-num.top1 {
        background: var(--accent);
        color: #fff;
    }
    .ranking-num.top2 {
        background: #b0b8c4;
        color: #fff;
    }
    .ranking-num.top3 {
        background: #cd9b6a;
        color: #fff;
    }
    .ranking-item .rank-body {
        flex: 1;
    }
    .ranking-item .rank-title {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0 0 2px;
    }
    .ranking-item .rank-date {
        font-size: 12px;
        color: var(--text-muted);
    }
    .ranking-item .rank-link {
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        white-space: nowrap;
    }

    /* ========== Topic Cards ========== */
    .topic-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
    }
    .topic-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        flex: 1 1 calc(50% - 10px);
        min-width: 260px;
        max-width: calc(50% - 10px);
        transition: all var(--transition-smooth);
    }
    .topic-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
    }
    .topic-card .topic-cover {
        width: 100%;
        aspect-ratio: 16 / 8;
        overflow: hidden;
        background: var(--bg);
    }
    .topic-card .topic-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .topic-card .topic-body {
        padding: 20px;
    }
    .topic-card .topic-title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0 0 6px;
    }
    .topic-card .topic-desc {
        font-size: 13px;
        color: var(--text-secondary);
        line-height: 1.7;
        margin: 0 0 12px;
    }
    .topic-card .topic-link {
        font-size: 13px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }

    /* ========== Subscribe Block ========== */
    .subscribe-block {
        background: var(--primary);
        border-radius: var(--radius-card);
        padding: 48px 32px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        flex-wrap: wrap;
        box-shadow: 0 8px 28px rgba(30, 58, 95, 0.18);
    }
    .subscribe-block .subscribe-text {
        flex: 1;
        min-width: 240px;
    }
    .subscribe-block .subscribe-text h2 {
        font-size: 20px;
        font-weight: 600;
        color: #fff;
        margin: 0 0 8px;
    }
    .subscribe-block .subscribe-text p {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.8);
        margin: 0;
        line-height: 1.7;
    }
    .subscribe-form {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        align-items: center;
        flex-shrink: 0;
    }
    .subscribe-form input {
        height: 44px;
        border-radius: var(--radius-btn);
        border: 1px solid transparent;
        padding: 0 16px;
        font-size: 14px;
        background: #fff;
        color: var(--text-primary);
        outline: none;
        min-width: 220px;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }
    .subscribe-form input:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.25);
    }
    .subscribe-form input::placeholder {
        color: var(--text-muted);
    }

    /* ========== FAQ ========== */
    .faq-section {
        background: #fff;
    }
    .faq-list {
        max-width: 800px;
        margin: 0;
        background: #fff;
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        overflow: hidden;
    }
    .faq-item {
        border-bottom: 1px solid var(--border);
        transition: background var(--transition-fast);
    }
    .faq-item:last-child {
        border-bottom: none;
    }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 20px;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-primary);
        background: #fff;
        transition: background var(--transition-fast);
        text-align: left;
        width: 100%;
    }
    .faq-question:hover {
        background: rgba(30, 58, 95, 0.03);
    }
    .faq-icon {
        flex-shrink: 0;
        width: 22px;
        height: 22px;
        position: relative;
        color: var(--primary);
    }
    .faq-icon::before,
    .faq-icon::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 14px;
        height: 2px;
        background: currentColor;
        transform: translate(-50%, -50%);
        transition: transform var(--transition-fast);
    }
    .faq-icon::after {
        transform: translate(-50%, -50%) rotate(90deg);
    }
    .faq-item.open .faq-icon::after {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        padding: 0 20px;
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.8;
        background: #fff;
    }
    .faq-item.open .faq-answer {
        max-height: 220px;
        padding: 0 20px 18px;
    }

    /* ========== Footer ========== */
    .site-footer {
        background: #fff;
        border-top: 1px solid var(--border);
        padding: 48px 0 24px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
        gap: 32px;
        margin-bottom: 32px;
    }
    .footer-brand .logo-area {
        margin-bottom: 12px;
    }
    .footer-slogan {
        font-size: 13px;
        color: var(--text-muted);
        margin: 0 0 16px;
        line-height: 1.6;
    }
    .footer-social {
        display: flex;
        gap: 8px;
    }
    .social-icon {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: var(--bg);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        color: var(--text-secondary);
        border: 1px solid var(--border);
        transition: all var(--transition-fast);
    }
    .social-icon:hover {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .footer-col h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
        margin: 0 0 14px;
    }
    .footer-col ul {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .footer-col ul li a {
        font-size: 13px;
        color: var(--text-secondary);
        transition: color var(--transition-fast);
    }
    .footer-col ul li a:hover {
        color: var(--primary);
    }
    .footer-news-item {
        margin-bottom: 12px;
    }
    .footer-news-title {
        font-size: 13px;
        font-weight: 500;
        color: var(--text-primary);
        display: block;
        line-height: 1.5;
        margin-bottom: 2px;
    }
    .footer-news-date {
        font-size: 11px;
        color: var(--text-muted);
    }
    .footer-bottom {
        border-top: 1px solid var(--border);
        padding-top: 20px;
        display: flex;
        flex-wrap: wrap;
        gap: 12px 20px;
        font-size: 12px;
        color: var(--text-muted);
        justify-content: center;
        align-items: center;
        text-align: center;
    }
    .footer-bottom a {
        color: var(--text-muted);
        transition: color var(--transition-fast);
    }
    .footer-bottom a:hover {
        color: var(--primary);
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .article-card {
            flex: 1 1 calc(50% - 12px);
            max-width: calc(50% - 12px);
        }
        .topic-card {
            flex: 1 1 calc(50% - 10px);
            max-width: calc(50% - 10px);
        }
        .overview-block {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --spacing-section: 48px;
        }
        .container {
            padding: 0 16px;
        }
        .category-header h1 {
            font-size: 24px;
        }
        .category-header .lead {
            font-size: 14px;
        }
        .article-card {
            flex: 1 1 100%;
            max-width: 100%;
        }
        .topic-card {
            flex: 1 1 100%;
            max-width: 100%;
        }
        .overview-block {
            padding: 20px;
            gap: 20px;
        }
        .overview-block .overview-stats {
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }
        .stat-item .stat-num {
            font-size: 22px;
        }
        .subscribe-block {
            padding: 32px 20px;
            flex-direction: column;
            align-items: flex-start;
        }
        .subscribe-form {
            width: 100%;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 0;
        }
        .header-top {
            gap: 8px;
        }
        .search-inline {
            width: 120px;
        }
        .btn-sm {
            padding: 0 12px;
            font-size: 12px;
        }
        .tabs-scroll {
            gap: 4px;
        }
        .tab-pill {
            padding: 4px 12px;
            font-size: 12px;
        }
        .section-title {
            font-size: 18px;
        }
        .article-card .card-title {
            font-size: 15px;
        }
        .faq-question {
            font-size: 14px;
            padding: 14px 16px;
        }
        .faq-answer {
            font-size: 13px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            gap: 8px;
        }
    }

    @media (max-width: 520px) {
        .header-top {
            height: 56px;
        }
        .logo-text {
            font-size: 17px;
        }
        .search-inline {
            display: none;
        }
        .category-header {
            padding: 20px 0 32px;
        }
        .breadcrumb-area {
            padding: 12px 0 0;
        }
        .breadcrumb {
            font-size: 12px;
        }
        .section {
            padding: 40px 0;
        }
        .section-alt {
            padding: 40px 0;
        }
        .btn {
            height: 40px;
            padding: 0 16px;
            font-size: 13px;
        }
        .article-card .card-body {
            padding: 14px 16px 16px;
        }
        .overview-block {
            padding: 16px;
        }
        .overview-block .overview-stats {
            grid-template-columns: 1fr;
        }
        .subscribe-form input {
            width: 100%;
            min-width: 100%;
        }
        .subscribe-form .btn {
            width: 100%;
        }
        .ranking-item {
            padding: 12px 14px;
            gap: 12px;
        }
        .ranking-num {
            width: 28px;
            height: 28px;
            font-size: 15px;
        }
        .ranking-item .rank-title {
            font-size: 14px;
        }
        .footer-bottom {
            font-size: 11px;
        }
        .footer-col h3 {
            font-size: 14px;
        }
    }