/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s 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-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section-mobile) 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: var(--spacing-section) 0;
            }
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-header .lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 32px;
            }
            .section-header .lead {
                font-size: 17px;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: #1D4ED8;
            color: #1D4ED8;
        }
        .btn-ghost {
            background: transparent;
            color: var(--ink-soft);
            padding: 10px 16px;
        }
        .btn-ghost:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.15);
            transform: translateY(-4px);
        }
        .card-pad {
            padding: 24px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.4;
        }
        .badge-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .badge-green {
            background: var(--accent-soft);
            color: #059669;
        }
        .badge-warm {
            background: var(--warning-soft);
            color: #B45309;
        }
        .badge-red {
            background: var(--danger-soft);
            color: #DC2626;
        }
        .tag {
            display: inline-block;
            font-size: 13px;
            color: var(--muted);
            background: var(--bg-soft);
            padding: 4px 12px;
            border-radius: 6px;
            border: 1px solid var(--border-soft);
            transition: all var(--transition);
        }
        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .divider {
            height: 1px;
            background: var(--border-soft);
            margin: 32px 0;
        }
        .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;
        }

        /* ============ NAVIGATION ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: all var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: nowrap;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }
        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), #1D4ED8);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            flex-shrink: 0;
        }
        .nav-logo span {
            color: var(--primary);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-search {
            display: none;
            position: relative;
        }
        .nav-search input {
            width: 200px;
            padding: 8px 12px 8px 36px;
            font-size: 14px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--bg-soft);
            transition: all var(--transition);
        }
        .nav-search input:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            width: 240px;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--muted);
            font-size: 13px;
            pointer-events: none;
        }
        .nav-login {
            display: none;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .nav-login:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            color: var(--ink);
            border: 1px solid var(--border);
            background: #fff;
            font-size: 18px;
            transition: all var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--bg-soft);
            border-color: var(--primary);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border-soft);
            padding: 16px 24px;
            box-shadow: var(--shadow-md);
            flex-direction: column;
            gap: 8px;
            z-index: 99;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 14px;
            font-size: 16px;
            border-radius: 10px;
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }
        .mobile-menu .nav-search {
            display: block;
            width: 100%;
            margin-bottom: 8px;
        }
        .mobile-menu .nav-search input {
            width: 100%;
        }
        .mobile-menu .nav-login {
            display: block;
            text-align: center;
            padding: 12px;
            margin-bottom: 4px;
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
            .nav-search {
                display: block;
            }
            .nav-login {
                display: inline-flex;
            }
            .mobile-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
            .site-header .container {
                gap: 20px;
            }
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            background: var(--primary-soft);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 80px 0;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .hero .container {
                grid-template-columns: 1.15fr 0.85fr;
                gap: 56px;
            }
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid rgba(37, 99, 235, 0.2);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
        }
        .hero h1 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }
        @media (min-width: 768px) {
            .hero h1 {
                font-size: 42px;
                line-height: 1.25;
            }
        }
        .hero-desc {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid rgba(37, 99, 235, 0.12);
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 2px;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 320px;
            background: var(--surface);
            border: 1px solid var(--border-soft);
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .hero-visual .overlay-card {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(8px);
            padding: 18px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(37, 99, 235, 0.1);
        }
        .hero-visual .overlay-card .match-teams {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 700;
            font-size: 15px;
            color: var(--ink);
        }
        .hero-visual .overlay-card .match-score {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            text-align: center;
            margin: 4px 0;
        }
        .hero-visual .overlay-card .match-status {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
            text-align: center;
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro {
            background: #fff;
        }
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            align-items: start;
        }
        @media (min-width: 1024px) {
            .brand-intro-grid {
                grid-template-columns: 0.7fr 1.3fr;
                gap: 48px;
            }
        }
        .brand-intro-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .brand-intro-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .brand-intro-visual .visual-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(255, 255, 255, 0.94);
            padding: 10px 16px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 13px;
            color: var(--ink);
            box-shadow: var(--shadow-md);
        }
        .brand-intro-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .brand-intro-text p {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .brand-intro-text p:last-child {
            margin-bottom: 0;
        }
        .brand-intro-features {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        /* ============ LIVE SCOREBOARD ============ */
        .scoreboard {
            background: linear-gradient(180deg, var(--bg-soft) 0%, #fff 100%);
        }
        .scoreboard-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .scoreboard-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (min-width: 1024px) {
            .scoreboard-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .score-card {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            transition: all var(--transition);
            cursor: default;
        }
        .score-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateY(-2px);
        }
        .score-card .match-league {
            font-size: 12px;
            color: var(--muted);
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .score-card .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .score-card .team {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            flex: 1;
        }
        .score-card .team:last-child {
            text-align: right;
        }
        .score-card .score {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            min-width: 52px;
            text-align: center;
            background: var(--primary-soft);
            border-radius: 8px;
            padding: 4px 8px;
        }
        .score-card .match-meta {
            font-size: 12px;
            color: var(--muted);
            text-align: center;
            margin-top: 10px;
            display: flex;
            justify-content: center;
            gap: 8px;
        }
        .score-card .live-indicator {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
        }
        .score-card .live-indicator .dot {
            width: 7px;
            height: 7px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.5);
            }
        }

        /* ============ SERVICE MATRIX ============ */
        .service-matrix {
            background: #fff;
        }
        .matrix-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .matrix-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (min-width: 1024px) {
            .matrix-grid {
                grid-template-columns: 1.2fr 0.8fr 1fr;
                grid-auto-rows: auto;
            }
        }
        .matrix-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .matrix-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateY(-4px);
        }
        .matrix-card .card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-soft);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .matrix-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
        }
        .matrix-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
        }
        .matrix-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
        }
        .matrix-card .card-link:hover {
            color: #1D4ED8;
            gap: 10px;
        }
        .matrix-card.featured {
            background: linear-gradient(160deg, #EFF6FF 0%, #fff 80%);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .matrix-card.accent {
            background: linear-gradient(160deg, #ECFDF5 0%, #fff 80%);
            border-color: rgba(16, 185, 129, 0.25);
        }

        /* ============ STATS BAR ============ */
        .stats-bar {
            background: var(--ink);
            color: #fff;
            padding: 48px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            text-align: center;
        }
        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 36px;
            }
        }
        .stat-item .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
        }
        .stat-item .stat-accent {
            color: var(--accent);
        }

        /* ============ PROCESS ============ */
        .process {
            background: var(--bg-soft);
        }
        .process-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin: 0 auto 14px;
        }
        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.65;
        }

        /* ============ MATCH CALENDAR ============ */
        .calendar {
            background: #fff;
        }
        .calendar-track {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }
        .calendar-track::-webkit-scrollbar {
            height: 6px;
        }
        .calendar-track::-webkit-scrollbar-track {
            background: var(--bg-soft);
            border-radius: 3px;
        }
        .calendar-track::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }
        .calendar-day {
            min-width: 220px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            padding: 20px;
            scroll-snap-align: start;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .calendar-day:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .calendar-day .day-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .calendar-day .match-item {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-soft);
            font-size: 13px;
            color: var(--ink);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .calendar-day .match-item:last-child {
            border-bottom: none;
        }
        .calendar-day .match-item .time {
            color: var(--muted);
            font-size: 12px;
            font-weight: 500;
        }
        .calendar-day .match-item .vs {
            color: var(--primary);
            font-weight: 700;
            font-size: 12px;
        }

        /* ============ GALLERY ============ */
        .gallery {
            background: var(--bg-soft);
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .gallery-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }
        .gallery-item {
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
        }
        .gallery-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .gallery-item img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .gallery-item:hover img {
            transform: scale(1.04);
        }
        .gallery-item .gallery-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.5;
        }

        /* ============ NEWS LIST ============ */
        .news {
            background: #fff;
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .news-list {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        .news-item {
            display: flex;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-soft);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-2px);
        }
        .news-item img {
            width: 100px;
            height: 80px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-meta {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 12px;
            color: var(--muted);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .news-item .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-title:hover {
            color: var(--primary);
        }
        .news-item .news-excerpt {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ COLUMN / DEEP DIVE ============ */
        .column {
            background: var(--bg-soft);
        }
        .column-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .column-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .column-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .column-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .column-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .column-card .column-body {
            padding: 20px;
        }
        .column-card .column-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 3px 10px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 10px;
        }
        .column-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .column-card p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.65;
        }

        /* ============ PARTNERS ============ */
        .partners {
            background: #fff;
        }
        .partners-wall {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-top: 32px;
        }
        .partner-logo {
            min-width: 120px;
            padding: 16px 24px;
            background: var(--bg-soft);
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            transition: all var(--transition);
            cursor: default;
            user-select: none;
        }
        .partner-logo:hover {
            border-color: rgba(37, 99, 235, 0.25);
            color: var(--primary);
            background: var(--primary-soft);
            transform: translateY(-2px);
        }

        /* ============ TESTIMONIALS ============ */
        .testimonials {
            background: linear-gradient(180deg, var(--bg-soft) 0%, #fff 100%);
        }
        .testi-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .testi-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        .testi-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .testi-card:hover {
            box-shadow: var(--shadow-md);
        }
        .testi-card .testi-text {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.75;
            margin-bottom: 16px;
            position: relative;
            padding-left: 16px;
        }
        .testi-card .testi-text::before {
            content: '\201C';
            position: absolute;
            left: 0;
            top: 2px;
            font-size: 28px;
            color: var(--primary);
            opacity: 0.5;
            font-weight: 700;
            line-height: 1;
        }
        .testi-card .testi-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testi-card .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .testi-card .author-info .author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
        }
        .testi-card .author-info .author-role {
            font-size: 12px;
            color: var(--muted);
        }

        /* ============ FAQ ============ */
        .faq {
            background: #fff;
        }
        .faq-list {
            max-width: 800px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            transition: all var(--transition);
            background: transparent;
            cursor: pointer;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
        }

        /* ============ TRUST BAR ============ */
        .trust-bar {
            background: var(--bg-soft);
        }
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 28px;
        }
        @media (min-width: 768px) {
            .trust-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 16px 18px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .trust-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .trust-item .trust-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }
        .trust-item .trust-info .trust-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 2px;
        }
        .trust-item .trust-info .trust-desc {
            font-size: 12px;
            color: var(--muted);
            line-height: 1.5;
        }

        /* ============ CTA / SUBSCRIBE ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1D4ED8 100%);
            color: #fff;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        @media (min-width: 768px) {
            .cta-grid {
                grid-template-columns: 1fr 1fr;
                gap: 48px;
            }
        }
        .cta-content h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .cta-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .cta-form {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-lg);
            max-width: 480px;
        }
        .cta-form .form-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
            margin-bottom: 14px;
        }
        @media (min-width: 375px) {
            .cta-form .form-row.two-col {
                grid-template-columns: 1fr 1fr;
            }
        }
        .cta-form label {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
            display: block;
            margin-bottom: 4px;
        }
        .cta-form .form-hint {
            font-size: 12px;
            color: var(--muted);
            margin-top: 12px;
            text-align: center;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #1A2333;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }
        .footer-brand .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .brand-name .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            text-align: center;
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                text-align: left;
            }
        }
        .footer-bottom .legal {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
        }
        .footer-bottom .legal a {
            color: rgba(255, 255, 255, 0.7);
            transition: all var(--transition);
        }
        .footer-bottom .legal a:hover {
            color: #fff;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            align-items: center;
            font-size: 12px;
        }
        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: #fff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1023px) {
            .nav-search input {
                width: 140px;
            }
            .nav-search input:focus {
                width: 180px;
            }
        }
        @media (max-width: 767px) {
            .hero {
                min-height: auto;
                padding: 48px 0;
            }
            .hero-visual {
                min-height: 240px;
            }
            .hero-visual img {
                min-height: 240px;
            }
            .hero-visual .overlay-card {
                padding: 12px 14px;
                bottom: 10px;
                left: 10px;
                right: 10px;
            }
            .hero-visual .overlay-card .match-score {
                font-size: 22px;
            }
            .brand-intro-visual img {
                height: 220px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-form {
                padding: 20px;
            }
            .gallery-item img {
                height: 160px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-item img {
                width: 100%;
                height: 140px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat .stat-num {
                font-size: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-item .stat-num {
                font-size: 24px;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .container {
                padding: 0 16px;
            }
            .cta-content h3 {
                font-size: 20px;
            }
            .footer-bottom {
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
        button { cursor: pointer; border: none; background: none; }
        input, select, textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus, select:focus, textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--bg-soft); }
        .section-tight { padding: 48px 0; }
        .section-header { margin-bottom: 40px; }
        .section-header .eyebrow {
            display: inline-flex; align-items: center; gap: 8px;
            font-size: 14px; font-weight: 600; color: var(--primary);
            background: var(--primary-soft); padding: 6px 16px;
            border-radius: 999px; margin-bottom: 14px; letter-spacing: 0.02em;
        }
        .section-header h2 { font-size: 28px; line-height: 1.35; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
        .section-header .lead { font-size: 16px; color: var(--muted); line-height: 1.8; max-width: 720px; }
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            font-weight: 600; font-size: 15px; padding: 12px 24px;
            border-radius: var(--radius-sm); transition: all var(--transition);
            white-space: nowrap; text-align: center;
        }
        .btn:focus-visible { outline: 3px solid rgba(37, 99, 235, 0.35); outline-offset: 2px; }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: #1D4ED8; box-shadow: var(--shadow-lg); transform: translateY(-1px); }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-md); }
        .btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
        .btn-outline:hover { background: var(--primary-soft); border-color: #1D4ED8; color: #1D4ED8; }
        .btn-ghost { background: transparent; color: var(--ink-soft); padding: 10px 16px; }
        .btn-ghost:hover { background: var(--bg-soft); color: var(--ink); }
        .btn-sm { padding: 8px 16px; font-size: 14px; }
        .btn-lg { padding: 14px 32px; font-size: 16px; }
        .card {
            background: var(--surface); border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft); box-shadow: var(--shadow-sm);
            transition: all var(--transition); overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, 0.18); transform: translateY(-4px); }
        .badge {
            display: inline-flex; align-items: center; gap: 6px;
            font-size: 13px; font-weight: 500; padding: 4px 12px;
            border-radius: 999px; line-height: 1.5;
        }
        .badge-blue { background: var(--primary-soft); color: var(--primary); }
        .badge-green { background: var(--accent-soft); color: #059669; }
        .badge-amber { background: var(--warning-soft); color: #B45309; }
        .badge-red { background: var(--danger-soft); color: #DC2626; }
        .badge-gray { background: var(--bg-soft); color: var(--muted); }
        .tag {
            display: inline-flex; align-items: center; gap: 6px;
            font-size: 13px; font-weight: 500; padding: 6px 14px;
            border-radius: 999px; background: var(--bg-soft); color: var(--ink-soft);
            transition: all var(--transition); border: 1px solid transparent;
        }
        .tag:hover { background: var(--primary-soft); color: var(--primary); border-color: rgba(37, 99, 235, 0.2); }
        .stat-number { font-size: 36px; font-weight: 700; color: var(--primary); line-height: 1.2; }
        .stat-label { font-size: 14px; color: var(--muted); margin-top: 4px; }
        .meta-text { font-size: 13px; color: var(--muted); }
        .divider { height: 1px; background: var(--border-soft); border: none; margin: 0; }
        .icon-box {
            display: flex; align-items: center; justify-content: center;
            width: 44px; height: 44px; border-radius: var(--radius-md);
            background: var(--primary-soft); color: var(--primary); font-size: 1.25rem;
            flex-shrink: 0;
        }
        .icon-box-green { background: var(--accent-soft); color: #059669; }
        .icon-box-amber { background: var(--warning-soft); color: #B45309; }
        .icon-box-red { background: var(--danger-soft); color: #DC2626; }
        /* Header / Nav */
        .site-header {
            position: sticky; top: 0; z-index: 100;
            background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-soft);
            height: var(--nav-height);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 16px; }
        .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); white-space: nowrap; }
        .brand .logo-icon {
            display: flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: var(--radius-sm);
            background: var(--primary); color: #fff; font-size: 1.1rem;
        }
        .nav-links { display: flex; align-items: center; gap: 4px; }
        .nav-link {
            padding: 8px 14px; border-radius: var(--radius-sm);
            font-size: 14px; font-weight: 500; color: var(--ink-soft);
            transition: all var(--transition); white-space: nowrap;
        }
        .nav-link:hover { background: var(--primary-soft); color: var(--primary); }
        .nav-link.active { background: var(--primary); color: #fff; }
        .header-actions { display: flex; align-items: center; gap: 10px; }
        .search-box { position: relative; display: flex; align-items: center; }
        .search-box input {
            padding: 8px 14px 8px 38px; font-size: 14px; width: 190px;
            border-radius: 999px; background: var(--bg-soft);
            border: 1px solid var(--border-soft); transition: all var(--transition);
        }
        .search-box input:focus { background: #fff; border-color: var(--primary); width: 220px; }
        .search-box .search-icon {
            position: absolute; left: 14px; color: var(--muted); font-size: 14px; pointer-events: none;
        }
        .btn-login {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 14px; font-weight: 600; color: var(--ink-soft);
            background: transparent; border: 1px solid var(--border);
            transition: all var(--transition); white-space: nowrap;
        }
        .btn-login:hover { background: var(--bg-soft); color: var(--ink); border-color: #CBD5E1; }
        .btn-nav-cta {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 14px; font-weight: 600; color: #fff;
            background: var(--primary); transition: all var(--transition); white-space: nowrap;
        }
        .btn-nav-cta:hover { background: #1D4ED8; box-shadow: var(--shadow-md); transform: translateY(-1px); }
        .mobile-menu-btn {
            display: none; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: var(--radius-sm);
            background: var(--bg-soft); color: var(--ink-soft); font-size: 1.2rem;
            transition: background var(--transition);
        }
        .mobile-menu-btn:hover { background: var(--primary-soft); }
        /* Breadcrumb */
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); flex-wrap: wrap; }
        .breadcrumb a { color: var(--muted); transition: color var(--transition); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: #CBD5E1; font-size: 12px; }
        .breadcrumb .current { color: var(--ink-soft); font-weight: 500; }
        /* Category H1 region */
        .category-hero {
            padding: 40px 0 32px; background: var(--bg-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .category-hero h1 { font-size: 32px; line-height: 1.35; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
        .category-hero .lead { font-size: 16px; color: var(--muted); line-height: 1.8; max-width: 800px; }
        /* Grid layouts */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        /* Article card */
        .article-card { display: flex; flex-direction: column; height: 100%; }
        .article-card .card-image {
            aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-soft);
            position: relative;
        }
        .article-card .card-image img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .card-image img { transform: scale(1.04); }
        .article-card .card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
        .article-card .card-title { font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 8px; line-height: 1.4; }
        .article-card .card-excerpt { font-size: 15px; color: var(--muted); line-height: 1.7; margin-bottom: 16px; flex: 1; }
        .article-card .card-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
        /* Featured card */
        .featured-card {
            display: grid; grid-template-columns: 1fr 1fr; gap: 0;
            background: var(--surface); border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft); box-shadow: var(--shadow-md);
            transition: all var(--transition); overflow: hidden;
        }
        .featured-card:hover { box-shadow: var(--shadow-lg); border-color: rgba(37, 99, 235, 0.18); }
        .featured-card .featured-image { overflow: hidden; background: var(--bg-soft); min-height: 260px; }
        .featured-card .featured-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .featured-card:hover .featured-image img { transform: scale(1.03); }
        .featured-card .featured-body { padding: 28px; display: flex; flex-direction: column; justify-content: center; }
        .featured-card .featured-title { font-size: 22px; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.4; }
        .featured-card .featured-excerpt { font-size: 15px; color: var(--muted); line-height: 1.75; margin-bottom: 16px; }
        /* Stats grid */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: var(--surface); border-radius: var(--radius-md);
            border: 1px solid var(--border-soft); padding: 24px;
            text-align: center; transition: all var(--transition);
        }
        .stat-card:hover { box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, 0.2); }
        /* Tag cloud */
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
        /* FAQ */
        .faq-item {
            background: var(--surface); border-radius: var(--radius-md);
            border: 1px solid var(--border-soft); margin-bottom: 12px;
            overflow: hidden; transition: all var(--transition);
        }
        .faq-item:hover { border-color: rgba(37, 99, 235, 0.2); }
        .faq-question {
            display: flex; align-items: center; justify-content: space-between;
            padding: 18px 20px; cursor: pointer; font-weight: 600;
            font-size: 15px; color: var(--ink); gap: 16px; text-align: left;
            background: transparent; width: 100%;
        }
        .faq-question .faq-icon { color: var(--primary); font-size: 14px; transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-icon { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 20px 18px; font-size: 15px; color: var(--muted);
            line-height: 1.8; display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        /* Footer */
        .site-footer { background: #1E293B; color: rgba(255, 255, 255, 0.85); padding: 56px 0 32px; }
        .site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .site-footer .brand-name {
            display: flex; align-items: center; gap: 10px;
            font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 14px;
        }
        .site-footer .brand-name .logo-icon {
            display: flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: var(--radius-sm);
            background: var(--primary); color: #fff; font-size: 1rem;
        }
        .site-footer p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.7); margin-bottom: 8px; }
        .site-footer h5 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .site-footer ul { list-style: none; padding: 0; margin: 0; }
        .site-footer ul li { margin-bottom: 10px; }
        .site-footer ul li a {
            font-size: 14px; color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition); display: inline-flex; align-items: center; gap: 6px;
        }
        .site-footer ul li a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 24px;
            display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
        }
        .footer-bottom .legal p { margin: 0 0 6px; font-size: 13px; }
        .footer-links { display: flex; align-items: center; gap: 8px; font-size: 14px; }
        .footer-links a { color: rgba(255, 255, 255, 0.7); transition: color var(--transition); }
        .footer-links a:hover { color: #fff; }
        /* Mobile menu */
        .mobile-menu { display: none; }
        /* Responsive */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
            .featured-card { grid-template-columns: 1fr; }
            .featured-card .featured-image { min-height: 200px; }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 60px; }
            .section { padding: var(--spacing-section-mobile) 0; }
            .section-header h2 { font-size: 24px; }
            .category-hero h1 { font-size: 26px; }
            .grid-2, .grid-3, .grid-4, .stats-grid { grid-template-columns: 1fr; }
            .nav-links {
                display: none; position: absolute; top: var(--nav-height); left: 0; right: 0;
                background: #fff; flex-direction: column; align-items: flex-start;
                padding: 16px 24px; gap: 4px; box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border-soft); z-index: 99;
            }
            .nav-links.show { display: flex; }
            .nav-link { width: 100%; padding: 10px 14px; }
            .search-box { display: none; }
            .btn-login { display: none; }
            .btn-nav-cta { display: none; }
            .mobile-menu-btn { display: flex; }
            .mobile-menu.show .nav-links { display: flex; }
            .header-actions { gap: 8px; }
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .category-hero { padding: 28px 0 24px; }
            .category-hero h1 { font-size: 22px; }
            .article-card .card-body { padding: 16px; }
            .featured-card .featured-body { padding: 20px; }
            .featured-card .featured-title { font-size: 18px; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-bottom { flex-direction: column; gap: 12px; }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .section-header .lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

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

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

        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: #1D4ED8;
            color: #1D4ED8;
        }

        .btn-ghost {
            background: transparent;
            color: var(--ink-soft);
            padding: 10px 16px;
        }

        .btn-ghost:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

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

        .card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.2);
            transform: translateY(-4px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-soft);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

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

        .brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--ink);
            letter-spacing: 0.01em;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

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

        .search-box {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-soft);
            border: 1px solid var(--border-soft);
            border-radius: 8px;
            padding: 7px 14px;
            min-width: 180px;
        }

        .search-box i {
            color: var(--muted);
            font-size: 13px;
        }

        .search-box input {
            border: none;
            background: transparent;
            padding: 0;
            font-size: 14px;
            width: 100%;
            box-shadow: none;
        }

        .search-box input:focus {
            border: none;
            box-shadow: none;
        }

        .btn-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 14px;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

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

        .btn-cta-nav {
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-cta-nav:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-md);
        }

        .mobile-toggle {
            display: none;
            font-size: 22px;
            color: var(--ink-soft);
            padding: 6px;
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border-soft);
            padding: 12px 24px 20px;
        }

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

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-soft);
            font-size: 15px;
        }

        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }

        .category-hero {
            padding: 56px 0 40px;
            background: linear-gradient(180deg, var(--primary-soft) 0%, #fff 100%);
            border-bottom: 1px solid var(--border-soft);
        }

        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .category-hero .breadcrumb a {
            color: var(--primary);
            transition: color var(--transition);
        }

        .category-hero .breadcrumb a:hover {
            color: #1D4ED8;
        }

        .category-hero .breadcrumb i {
            font-size: 10px;
            color: var(--muted);
        }

        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .category-hero .hero-lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 760px;
        }

        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 16px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
        }

        .category-hero .hero-meta i {
            color: var(--primary);
            margin-right: 6px;
        }

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

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

        .news-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .news-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--bg-soft);
        }

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

        .news-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .news-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .news-card .card-summary {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--muted);
            padding-top: 14px;
            border-top: 1px solid var(--border-soft);
        }

        .news-card .card-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }

        .feature-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
        }

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

        .feature-card .feature-img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            background: var(--bg-soft);
        }

        .feature-card .feature-body {
            padding: 36px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .feature-card .feature-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: var(--primary);
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .feature-card .feature-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .feature-card .feature-summary {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            background: var(--bg-soft);
            border: 1px solid var(--border-soft);
            padding: 8px 18px;
            border-radius: 999px;
            transition: all var(--transition);
        }

        .tag-pill:hover {
            color: var(--primary);
            background: var(--primary-soft);
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateY(-2px);
        }

        .tag-pill i {
            color: var(--primary-light);
            font-size: 12px;
        }

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

        .stat-item {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .stat-item .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--muted);
        }

        .subscribe-section {
            background: linear-gradient(135deg, #1E293B 0%, #1E3A5F 100%);
            border-radius: var(--radius-xl);
            padding: 52px 48px;
            position: relative;
            overflow: hidden;
        }

        .subscribe-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.35) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .subscribe-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 640px;
            position: relative;
            z-index: 1;
        }

        .subscribe-form {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr auto;
            gap: 14px;
            align-items: end;
            position: relative;
            z-index: 1;
        }

        .subscribe-form input,
        .subscribe-form select {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 15px;
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .subscribe-form input:focus,
        .subscribe-form select:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
        }

        .subscribe-form select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }

        .subscribe-form select option {
            color: var(--ink);
            background: #fff;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.25);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: all var(--transition);
            text-align: left;
            width: 100%;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--muted);
            font-size: 14px;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
        }

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

        .site-footer {
            background: #1E293B;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

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

        .footer-brand .brand-name .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            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 {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            flex-wrap: wrap;
        }

        .footer-bottom .legal {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-bottom .legal p {
            margin: 0;
        }

        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        @media (min-width: 769px) {
            .section {
                padding: var(--spacing-section) 0;
            }

            .section-header h2 {
                font-size: 32px;
            }

            .section-header .lead {
                font-size: 17px;
            }
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

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

            .feature-card .feature-img {
                min-height: 240px;
            }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .header-actions .search-box,
            .header-actions .btn-login {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .mobile-menu {
                display: none;
            }

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

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

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

            .feature-card .feature-body {
                padding: 24px 20px;
            }

            .feature-card .feature-title {
                font-size: 20px;
            }

            .subscribe-section {
                padding: 36px 24px;
                border-radius: var(--radius-lg);
            }

            .subscribe-form {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }

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

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

        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr;
            }

            .stat-item .stat-number {
                font-size: 26px;
            }

            .container {
                padding: 0 16px;
            }

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

            .section-header h2 {
                font-size: 24px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select,
        textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section-mobile) 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: var(--spacing-section) 0;
            }
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-header .lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 32px;
            }
            .section-header .lead {
                font-size: 17px;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: #1D4ED8;
            color: #1D4ED8;
        }
        .btn-ghost {
            background: transparent;
            color: var(--ink-soft);
            padding: 10px 16px;
        }
        .btn-ghost:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ink-soft);
            background: var(--bg-soft);
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid var(--border-soft);
            transition: all var(--transition);
            cursor: default;
        }
        .tag:hover {
            background: var(--primary-soft);
            color: var(--primary);
            border-color: rgba(37, 99, 235, 0.3);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .badge-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-soft);
            color: var(--accent);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-soft);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--ink);
            white-space: nowrap;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            transition: all var(--transition);
            min-width: 180px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 0;
            font-size: 14px;
            outline: none;
            box-shadow: none;
            width: 100%;
        }
        .search-box input:focus {
            box-shadow: none;
        }
        .btn-nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
        }
        .mobile-toggle {
            display: none;
            font-size: 22px;
            color: var(--ink);
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 99;
            padding: 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 14px 16px;
            font-size: 16px;
            border-radius: var(--radius-md);
            border-bottom: 1px solid var(--border-soft);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .page-header {
            padding: 40px 0 32px;
            background: var(--bg-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .page-header h1 {
            font-size: 28px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .page-header .page-lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 760px;
        }
        @media (min-width: 768px) {
            .page-header {
                padding: 48px 0 40px;
            }
            .page-header h1 {
                font-size: 34px;
            }
            .page-header .page-lead {
                font-size: 17px;
            }
        }
        .article-list-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .article-list-card .cover-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .article-list-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-list-card:hover .cover-wrap img {
            transform: scale(1.04);
        }
        .article-list-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .article-list-card .card-meta {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .article-list-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.45;
            transition: color var(--transition);
        }
        .article-list-card:hover .card-title {
            color: var(--primary);
        }
        .article-list-card .card-summary {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-list-card .card-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-soft);
        }
        .read-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .read-link:hover {
            color: #1D4ED8;
            gap: 10px;
        }
        .feature-card {
            display: grid;
            grid-template-columns: 1fr;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }
        @media (min-width: 640px) {
            .feature-card {
                grid-template-columns: 1.2fr 1fr;
            }
        }
        .feature-card .cover-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .feature-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .cover-wrap img {
            transform: scale(1.04);
        }
        .feature-card .card-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            justify-content: center;
        }
        .feature-card .card-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
        }
        .feature-card .card-summary {
            font-size: 16px;
            color: var(--ink-soft);
            line-height: 1.8;
        }
        .stat-strip {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 768px) {
            .stat-strip {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }
        .stat-item {
            text-align: center;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            padding: 24px 16px;
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.15);
        }
        .stat-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }
        .subscribe-card {
            background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            color: #fff;
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }
        @media (min-width: 768px) {
            .subscribe-card {
                grid-template-columns: 1.2fr 1fr;
                padding: 48px 52px;
                gap: 40px;
                align-items: center;
            }
        }
        .subscribe-card h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .subscribe-card p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .subscribe-form .form-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }
        @media (min-width: 480px) {
            .subscribe-form .form-row {
                grid-template-columns: 1fr 1fr;
            }
        }
        .subscribe-form input,
        .subscribe-form select {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: #fff;
            width: 100%;
        }
        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .subscribe-form input:focus,
        .subscribe-form select:focus {
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.2);
        }
        .subscribe-form select option {
            color: var(--ink);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .btn-white:hover {
            background: var(--primary-soft);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            transform: translateY(-1px);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
            transition: all var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            background: var(--bg-soft);
        }
        .faq-question .fa-chevron-down {
            font-size: 14px;
            color: var(--muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        .site-footer {
            background: #1E293B;
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 28px;
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }
        .footer-brand .brand-name {
            color: #fff;
            font-size: 22px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
            border-radius: 8px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-bottom .legal {
            display: flex;
            flex-direction: column;
            gap: 4px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-links a:hover {
            color: #fff;
        }
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .search-box {
                display: none;
            }
            .btn-nav-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media (min-width: 1024px) {
            .mobile-nav {
                display: none !important;
            }
        }
        @media (max-width: 767px) {
            .page-header h1 {
                font-size: 24px;
            }
            .page-header .page-lead {
                font-size: 15px;
            }
            .feature-card .card-title {
                font-size: 19px;
            }
            .feature-card .card-body {
                padding: 20px;
            }
            .subscribe-card {
                padding: 28px 20px;
            }
            .subscribe-card h2 {
                font-size: 20px;
            }
            .stat-number {
                font-size: 28px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .page-header {
                padding: 32px 0 24px;
            }
            .article-list-card .card-body {
                padding: 16px 18px 18px;
            }
            .article-list-card .card-title {
                font-size: 16px;
            }
            .article-list-card .card-summary {
                font-size: 14px;
            }
            .feature-card .card-body {
                padding: 16px 18px;
            }
            .feature-card .card-title {
                font-size: 18px;
            }
            .feature-card .card-summary {
                font-size: 14px;
            }
            .subscribe-card {
                padding: 24px 16px;
                border-radius: var(--radius-lg);
            }
            .subscribe-card h2 {
                font-size: 18px;
            }
            .subscribe-card p {
                font-size: 14px;
            }
            .stat-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        input,
        select,
        textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }

        input:focus,
        select:focus,
        textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

        @media (min-width: 768px) {
            .section {
                padding: var(--spacing-section) 0;
            }
        }

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

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

        .section-header {
            margin-bottom: 40px;
        }

        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .section-header .lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }

        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 32px;
            }
            .section-header .lead {
                font-size: 17px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }

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

        .btn-primary:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

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

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

        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: #1D4ED8;
            color: #1D4ED8;
        }

        .btn-ghost {
            background: transparent;
            color: var(--ink-soft);
            padding: 10px 16px;
        }

        .btn-ghost:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

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

        .card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--bg-soft);
            color: var(--ink-soft);
        }

        .badge-primary {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .badge-accent {
            background: var(--accent-soft);
            color: var(--accent);
        }

        .badge-warning {
            background: var(--warning-soft);
            color: var(--warning);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--ink);
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .brand .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
            transition: background var(--transition);
        }

        .brand:hover .logo-icon {
            background: #1D4ED8;
        }

        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }

        @media (min-width: 1024px) {
            .nav-links {
                display: flex;
            }
        }

        .nav-link {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }

        .nav-link.active {
            background: var(--primary-soft);
            color: var(--primary);
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .search-box {
            display: none;
            align-items: center;
            gap: 8px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 6px 12px;
            width: 200px;
            transition: all var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }

        .search-box input {
            border: none;
            background: transparent;
            padding: 4px 0;
            font-size: 14px;
            width: 100%;
            outline: none;
            box-shadow: none;
        }

        .search-box input:focus {
            box-shadow: none;
        }

        .search-box i {
            color: var(--muted);
            font-size: 14px;
        }

        @media (min-width: 768px) {
            .search-box {
                display: flex;
            }
        }

        .login-btn {
            display: none;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .login-btn:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }

        @media (min-width: 768px) {
            .login-btn {
                display: inline-flex;
            }
        }

        .mobile-menu-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            color: var(--ink-soft);
            font-size: 18px;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-soft);
        }

        @media (min-width: 1024px) {
            .mobile-menu-toggle {
                display: none;
            }
        }

        .mobile-nav {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border-soft);
            padding: 16px 24px;
            box-shadow: var(--shadow-md);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav a {
            display: block;
            padding: 12px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ink);
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-nav a:hover {
            background: var(--bg-soft);
        }

        .mobile-nav a.active {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--muted);
            transition: color var(--transition);
        }

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

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

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

        .page-hero-cat {
            padding: 48px 0 40px;
            background: linear-gradient(180deg, var(--primary-soft) 0%, var(--surface) 100%);
            border-bottom: 1px solid var(--border-soft);
        }

        .page-hero-cat h1 {
            font-size: 34px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .page-hero-cat .lead {
            font-size: 17px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.8;
        }

        @media (min-width: 768px) {
            .page-hero-cat h1 {
                font-size: 40px;
            }
        }

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

        @media (min-width: 640px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .guide-card {
            display: flex;
            flex-direction: column;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .guide-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }

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

        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .guide-card-body {
            padding: 20px 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-card-body h3 {
            font-size: 18px;
            line-height: 1.5;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }

        .guide-card-body p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
        }

        .guide-card-meta i {
            color: var(--primary);
            font-size: 12px;
        }

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

        @media (min-width: 768px) {
            .featured-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .featured-card {
            display: flex;
            flex-direction: column;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }

        .featured-card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .featured-card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .featured-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .featured-card-body p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 14px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all var(--transition);
        }

        .tag-cloud .tag:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary);
        }

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

        @media (min-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .stat-item {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .stat-item .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

        .subscribe-box {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 40px 28px;
        }

        @media (min-width: 768px) {
            .subscribe-box {
                padding: 48px 40px;
            }
        }

        .subscribe-box h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .subscribe-box .lead {
            font-size: 16px;
            color: var(--muted);
            margin-bottom: 28px;
            line-height: 1.75;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .form-row {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink);
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question i {
            color: var(--muted);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.8;
        }

        .site-footer {
            background: #1E293B;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
            margin-top: 40px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        @media (min-width: 640px) {
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }

        .site-footer .footer-brand .brand-name {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand .brand-name .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 14px;
        }

        .site-footer .footer-brand p {
            font-size: 15px;
            line-height: 1.8;
            max-width: 360px;
        }

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

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

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

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 15px;
            transition: color var(--transition);
        }

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

        .site-footer .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: flex-start;
        }

        @media (min-width: 768px) {
            .site-footer .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .site-footer .footer-bottom .legal {
            display: flex;
            flex-direction: column;
            gap: 4px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .site-footer .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
        }

        .site-footer .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .site-footer .footer-bottom .footer-links a:hover {
            color: #fff;
        }

        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
        }

        .image-mask {
            position: relative;
            overflow: hidden;
        }

        .image-mask::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(30, 41, 59, 0.3), transparent);
            pointer-events: none;
        }

/* roulang page: category5 */
:root {
            --primary: #2563EB;
            --primary-light: #3B82F6;
            --primary-soft: #EFF6FF;
            --surface: #FFFFFF;
            --bg-soft: #F8FAFC;
            --ink: #1E293B;
            --ink-soft: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --border-soft: #EEF2F6;
            --accent: #10B981;
            --accent-soft: #ECFDF5;
            --warning: #F59E0B;
            --warning-soft: #FFFBEB;
            --danger: #EF4444;
            --danger-soft: #FEF2F2;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, 0.05);
            --shadow-md: 0 4px 16px rgba(30, 41, 59, 0.07);
            --shadow-lg: 0 12px 32px rgba(37, 99, 235, 0.1);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --font-base: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --nav-height: 68px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-base);
            color: var(--ink);
            background: var(--surface);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        input, select, textarea {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            background: #fff;
            color: var(--ink);
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus, select:focus, textarea:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-soft);
        }
        .section-tight {
            padding: 48px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-soft);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-size: 28px;
            line-height: 1.35;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-header .lead {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .section-header h2 {
                font-size: 32px;
            }
            .section-header .lead {
                font-size: 17px;
            }
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
            text-align: center;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: #1D4ED8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: #1D4ED8;
            color: #1D4ED8;
        }
        .btn-ghost {
            background: transparent;
            color: var(--ink-soft);
            padding: 10px 16px;
        }
        .btn-ghost:hover {
            background: var(--bg-soft);
            color: var(--ink);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, 0.18);
            transform: translateY(-4px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-soft);
            box-shadow: 0 1px 4px rgba(30, 41, 59, 0.04);
            min-height: var(--nav-height);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: var(--nav-height);
            padding: 0 24px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .brand-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: 0.01em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-soft);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            min-width: 180px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            box-shadow: none;
            padding: 0;
            font-size: 14px;
            width: 140px;
        }
        .search-box input:focus {
            box-shadow: none;
            border: none;
        }
        .mobile-toggle {
            display: none;
            font-size: 22px;
            color: var(--ink);
            padding: 8px;
        }
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                text-align: left;
                border-radius: var(--radius-sm);
            }
            .nav-actions {
                gap: 6px;
            }
            .search-box {
                min-width: auto;
                padding: 6px 12px;
            }
            .search-box input {
                width: 80px;
            }
            .mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .search-box {
                display: none;
            }
            .header-inner {
                padding: 0 16px;
                gap: 10px;
            }
            .brand-name {
                font-size: 17px;
            }
        }
        .category-breadcrumb {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .category-breadcrumb a {
            color: var(--muted);
            transition: color var(--transition);
        }
        .category-breadcrumb a:hover {
            color: var(--primary);
        }
        .category-hero {
            background: var(--bg-soft);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-soft);
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .category-hero .cat-desc {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
        }
        @media (min-width: 768px) {
            .category-hero h1 {
                font-size: 38px;
            }
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card .cover-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-soft);
        }
        .news-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .cover-wrap img {
            transform: scale(1.03);
        }
        .news-card .card-body {
            padding: 20px;
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .news-card h2 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color var(--transition);
        }
        .news-card:hover h2 {
            color: var(--primary);
        }
        .news-card .excerpt {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .news-card .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .news-card .read-more:hover {
            gap: 10px;
        }
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 680px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        .featured-card {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 0;
            min-height: 320px;
        }
        .featured-card .featured-img {
            position: relative;
            overflow: hidden;
            min-height: 300px;
        }
        .featured-card .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .featured-card .featured-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-card .featured-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
            width: fit-content;
        }
        .featured-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .featured-card p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        @media (max-width: 768px) {
            .featured-card {
                grid-template-columns: 1fr;
            }
            .featured-card .featured-img {
                min-height: 220px;
                order: -1;
            }
            .featured-card .featured-body {
                padding: 24px;
            }
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all var(--transition);
        }
        .tag-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
        }
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 15px;
            color: var(--muted);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-value {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
        }
        .subscribe-panel {
            background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 100%);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .subscribe-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .subscribe-panel p {
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .subscribe-form .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .subscribe-form label {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
            display: block;
        }
        .subscribe-form .form-group {
            margin-bottom: 4px;
        }
        @media (max-width: 768px) {
            .subscribe-panel {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .subscribe-form .form-row {
                grid-template-columns: 1fr;
            }
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            text-align: left;
            background: transparent;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px 20px;
            font-size: 15px;
            color: var(--ink-soft);
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .site-footer {
            background: #1E293B;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .brand-name {
            color: #fff;
            font-size: 22px;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom .legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom .legal p {
            margin: 0;
        }
        .footer-bottom .legal a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            transition: color var(--transition);
        }
        .footer-bottom .legal a:hover {
            color: #fff;
        }
        .footer-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        .category-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--muted);
            margin-top: 8px;
        }
        .category-hero .hero-meta .badge {
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
        }
        .section-divider {
            border: none;
            border-top: 1px solid var(--border-soft);
            margin: 0;
        }
        .more-resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .more-resource-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            background: var(--surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .more-resource-list li:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .more-resource-list li i {
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }
        .more-resource-list li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink);
            flex: 1;
        }
        .more-resource-list li a:hover {
            color: var(--primary);
        }
        .more-resource-list li span {
            font-size: 13px;
            color: var(--muted);
            flex-shrink: 0;
        }
        @media (max-width: 680px) {
            .more-resource-list li {
                flex-wrap: wrap;
            }
            .more-resource-list li span {
                width: 100%;
                padding-left: 26px;
            }
        }