/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b0b1a;
            --primary-light: #12122a;
            --secondary: #1a1a3e;
            --accent-gold: #f0b90b;
            --accent-gold-light: #fcd43b;
            --accent-gold-dark: #c9950a;
            --accent-red: #e94560;
            --accent-blue: #4a6cf7;
            --accent-purple: #7c3aed;
            --text-white: #f0f0f5;
            --text-light: #c8c8e0;
            --text-muted: #8888aa;
            --border-color: rgba(240, 185, 11, 0.15);
            --card-bg: rgba(18, 18, 42, 0.85);
            --card-bg-hover: rgba(26, 26, 62, 0.95);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-gold: 0 4px 20px rgba(240, 185, 11, 0.2);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --sidebar-collapsed: 68px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-gold-light);
        }
        a:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        ::selection {
            background: var(--accent-gold);
            color: var(--primary);
        }

        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--accent-gold-dark);
            border-radius: 3px;
        }

        /* ===== Bootstrap Override ===== */
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .row {
            margin-left: -12px;
            margin-right: -12px;
        }
        .row>[class*="col-"] {
            padding-left: 12px;
            padding-right: 12px;
        }

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            padding: 10px 28px;
            transition: var(--transition);
            border: none;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
        }
        .btn:focus,
        .btn:active {
            box-shadow: none !important;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
            color: var(--primary);
            box-shadow: var(--shadow-gold);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240, 185, 11, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            background: transparent;
        }
        .btn-outline-light:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(240, 185, 11, 0.08);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--accent-red), #c23152);
            color: #fff;
            box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
        }
        .btn-accent:hover {
            background: linear-gradient(135deg, #ff5a7a, var(--accent-red));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(233, 69, 96, 0.4);
        }
        .btn-lg {
            padding: 14px 40px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 6px 18px;
            font-size: 0.85rem;
        }

        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(10px);
        }
        .card:hover {
            background: var(--card-bg-hover);
            border-color: rgba(240, 185, 11, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card .card-body {
            padding: 24px;
        }
        .card .card-title {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        .card .card-text {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.6;
        }

        .badge {
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            letter-spacing: 0.3px;
        }
        .badge-gold {
            background: rgba(240, 185, 11, 0.18);
            color: var(--accent-gold);
        }
        .badge-red {
            background: rgba(233, 69, 96, 0.18);
            color: var(--accent-red);
        }
        .badge-blue {
            background: rgba(74, 108, 247, 0.18);
            color: var(--accent-blue);
        }
        .badge-purple {
            background: rgba(124, 58, 237, 0.18);
            color: var(--accent-purple);
        }

        /* ===== Layout: Sidebar + Main ===== */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* --- Sidebar --- */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary-light);
            border-right: 1px solid rgba(240, 185, 11, 0.08);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            transition: var(--transition);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sidebar-brand {
            padding: 24px 20px 20px;
            border-bottom: 1px solid rgba(240, 185, 11, 0.08);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 800;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .sidebar-brand .brand-text span {
            color: var(--accent-gold);
        }

        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
        }
        .sidebar-nav .nav-item {
            margin-bottom: 4px;
        }
        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-link i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-link:hover {
            color: var(--text-light);
            background: rgba(240, 185, 11, 0.06);
        }
        .sidebar-nav .nav-link.active {
            color: var(--accent-gold);
            background: rgba(240, 185, 11, 0.1);
        }
        .sidebar-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--accent-gold);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-nav .nav-link .nav-badge {
            margin-left: auto;
            font-size: 0.7rem;
            padding: 2px 10px;
            border-radius: 12px;
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-gold);
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(240, 185, 11, 0.08);
            font-size: 0.78rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* --- Main Content --- */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            width: calc(100% - var(--sidebar-width));
        }

        /* ===== Mobile Top Bar ===== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--primary-light);
            border-bottom: 1px solid rgba(240, 185, 11, 0.08);
            z-index: 1040;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }
        .mobile-topbar .hamburger {
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border-radius: var(--radius-sm);
        }
        .mobile-topbar .hamburger:hover {
            background: rgba(240, 185, 11, 0.1);
        }
        .mobile-topbar .mobile-brand {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
        }
        .mobile-topbar .mobile-brand span {
            color: var(--accent-gold);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 80px 40px 80px;
            background: linear-gradient(160deg, #0b0b1a 0%, #12122a 40%, #1a0a2e 70%, #0b0b1a 100%);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(74, 108, 247, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section .hero-glow {
            position: absolute;
            top: 20%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.03) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 20px;
            background: rgba(240, 185, 11, 0.12);
            color: var(--accent-gold);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(240, 185, 11, 0.15);
        }
        .hero-section h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-section .hero-sub {
            font-size: 1.15rem;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .hero-section .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-section .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-section .hero-stat-item {
            text-align: left;
        }
        .hero-section .hero-stat-item .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-section .hero-stat-item .stat-num span {
            color: var(--accent-gold);
        }
        .hero-section .hero-stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ===== Section General ===== */
        .section-block {
            padding: 80px 40px;
        }
        .section-block .section-header {
            margin-bottom: 48px;
            text-align: center;
        }
        .section-block .section-header .section-label {
            display: inline-block;
            padding: 4px 18px;
            border-radius: 20px;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-gold);
            font-size: 0.82rem;
            font-weight: 500;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            border: 1px solid rgba(240, 185, 11, 0.12);
        }
        .section-block .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-block .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-block .section-header .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-dark));
            border-radius: 2px;
            margin: 16px auto 0;
        }
        .section-block .section-header.text-left {
            text-align: left;
        }
        .section-block .section-header.text-left .section-divider {
            margin-left: 0;
        }

        /* ===== Features / 平台特色 ===== */
        .features-grid .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
            text-align: center;
        }
        .features-grid .feature-card:hover {
            background: var(--card-bg-hover);
            border-color: rgba(240, 185, 11, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .features-grid .feature-card .f-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto 20px;
            background: rgba(240, 185, 11, 0.1);
            color: var(--accent-gold);
            transition: var(--transition);
        }
        .features-grid .feature-card:hover .f-icon {
            background: rgba(240, 185, 11, 0.2);
            transform: scale(1.05);
        }
        .features-grid .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        .features-grid .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== Hot Games / 热门游戏 ===== */
        .game-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .game-card:hover {
            border-color: rgba(240, 185, 11, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .game-card .game-thumb {
            height: 180px;
            background: linear-gradient(145deg, #1a1a3e, #2a1a4e);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: rgba(240, 185, 11, 0.3);
            position: relative;
            overflow: hidden;
        }
        .game-card .game-thumb .game-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 11, 26, 0.9));
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }
        .game-card .game-thumb .game-overlay .game-tag {
            background: var(--accent-gold);
            color: var(--primary);
            padding: 2px 14px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 700;
        }
        .game-card .game-info {
            padding: 20px;
        }
        .game-card .game-info h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .game-card .game-info .game-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .game-card .game-info .game-meta i {
            margin-right: 4px;
        }
        .game-card .game-info .game-meta .rating {
            color: var(--accent-gold);
        }

        /* ===== Latest News / 最新资讯 ===== */
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            border-color: rgba(240, 185, 11, 0.25);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-card .news-category {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            margin-bottom: 12px;
            width: fit-content;
        }
        .news-card .news-category.cat-hot {
            background: rgba(233, 69, 96, 0.15);
            color: var(--accent-red);
        }
        .news-card .news-category.cat-guide {
            background: rgba(74, 108, 247, 0.15);
            color: var(--accent-blue);
        }
        .news-card .news-category.cat-event {
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent-gold);
        }
        .news-card .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: inherit;
        }
        .news-card .news-title a:hover {
            color: var(--accent-gold);
        }
        .news-card .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .news-card .news-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 14px;
        }
        .news-card .news-footer .news-date i {
            margin-right: 6px;
        }
        .news-card .news-footer .news-readmore {
            color: var(--accent-gold);
            font-weight: 500;
        }
        .news-card .news-footer .news-readmore:hover {
            color: var(--accent-gold-light);
        }

        /* ===== Stats / 数据统计 ===== */
        .stats-section {
            background: linear-gradient(160deg, #0f0f23, #1a0a2e);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 1000px;
            height: 1000px;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.03) 0%, transparent 60%);
            pointer-events: none;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            position: relative;
            z-index: 2;
        }
        .stat-item .stat-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            opacity: 0.7;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .stat-item .stat-number span {
            color: var(--accent-gold);
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ===== Steps / 使用流程 ===== */
        .steps-section .step-card {
            text-align: center;
            padding: 32px 24px;
            position: relative;
        }
        .steps-section .step-card .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            position: relative;
            z-index: 2;
            box-shadow: 0 0 30px rgba(240, 185, 11, 0.2);
        }
        .steps-section .step-card .step-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .steps-section .step-card .step-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        .steps-section .step-connector {
            position: absolute;
            top: 44px;
            right: -30px;
            width: 60px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-gold), transparent);
            opacity: 0.3;
        }
        .steps-section .col:last-child .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-section .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-section .accordion-item:not(:first-of-type) {
            border-top: 1px solid var(--border-color);
        }
        .faq-section .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 24px;
            box-shadow: none !important;
            border: none;
        }
        .faq-section .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f0b90b'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: var(--transition);
        }
        .faq-section .accordion-button:not(.collapsed)::after {
            transform: rotate(-180deg);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: rgba(240, 185, 11, 0.05);
            color: var(--accent-gold);
        }
        .faq-section .accordion-button:hover {
            background: rgba(240, 185, 11, 0.03);
        }
        .faq-section .accordion-body {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a0a2e 0%, #0f0f23 50%, #12122a 100%);
            border-top: 1px solid rgba(240, 185, 11, 0.08);
            border-bottom: 1px solid rgba(240, 185, 11, 0.08);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.04) 0%, transparent 60%);
            border-radius: 50%;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 40px 20px;
        }
        .cta-section .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section .cta-content p {
            font-size: 1.05rem;
            color: var(--text-light);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-light);
            border-top: 1px solid rgba(240, 185, 11, 0.06);
            padding: 48px 40px 32px;
        }
        .site-footer .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .site-footer .footer-brand span {
            color: var(--accent-gold);
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 320px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(240, 185, 11, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: rgba(240, 185, 11, 0.2);
            color: var(--accent-gold);
            transform: translateY(-3px);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            margin-top: 32px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-gold);
        }

        /* ===== Sidebar Overlay (mobile) ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
        }
        .empty-state i {
            font-size: 3rem;
            margin-bottom: 16px;
            opacity: 0.4;
        }
        .empty-state p {
            font-size: 1rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-section h1 {
                font-size: 2.6rem;
            }
            .section-block {
                padding: 60px 24px;
            }
            .site-footer {
                padding: 40px 24px 24px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 260px;
            }

            .mobile-topbar {
                display: flex;
            }

            .sidebar {
                transform: translateX(-100%);
                width: var(--sidebar-width);
                box-shadow: var(--shadow-lg);
            }
            .sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 64px;
            }

            .hero-section {
                padding: 48px 20px 56px;
                min-height: auto;
            }
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section .hero-sub {
                font-size: 1rem;
            }
            .hero-section .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
                margin-top: 32px;
                padding-top: 24px;
            }
            .hero-section .hero-stat-item .stat-num {
                font-size: 1.4rem;
            }

            .section-block {
                padding: 48px 20px;
            }
            .section-block .section-header h2 {
                font-size: 1.7rem;
            }
            .section-block .section-header {
                margin-bottom: 32px;
            }

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

            .game-card .game-thumb {
                height: 140px;
            }

            .stats-section .stat-item .stat-number {
                font-size: 2rem;
            }

            .steps-section .step-connector {
                display: none;
            }

            .cta-section .cta-content h2 {
                font-size: 1.5rem;
            }
            .cta-section .cta-content {
                padding: 24px 16px;
            }

            .site-footer {
                padding: 32px 20px 20px;
            }
            .site-footer .footer-desc {
                max-width: 100%;
            }

            .sidebar-footer {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.6rem;
            }
            .hero-section .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-section .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .hero-section .hero-stats {
                flex-direction: column;
                gap: 16px;
            }

            .section-block {
                padding: 36px 16px;
            }
            .section-block .section-header h2 {
                font-size: 1.4rem;
            }

            .news-card {
                padding: 18px;
            }

            .stat-item .stat-number {
                font-size: 1.6rem;
            }

            .faq-section .accordion-button {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-section .accordion-body {
                padding: 0 16px 16px;
                font-size: 0.85rem;
            }

            .site-footer .footer-links {
                margin-bottom: 16px;
            }
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #f1948a;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #f1c40f;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-surface: #16213e;
            --text-white: #f5f5f7;
            --text-light: #b0b0c0;
            --text-muted: #7a7a8a;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 20px rgba(231, 76, 60, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 220px;
            --header-height: 0px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-base);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            font-size: 16px;
            padding-left: var(--sidebar-width);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Sidebar Navigation (App Shell) ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            padding: 0;
            overflow-y: auto;
            backdrop-filter: blur(12px);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 24px 20px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
        }
        .brand-text span {
            color: var(--primary);
        }

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

        .sidebar-nav .nav-item {
            list-style: none;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-nav .nav-link:hover {
            background: rgba(231, 76, 60, 0.08);
            color: var(--text-white);
        }
        .sidebar-nav .nav-link:hover i {
            color: var(--primary);
        }
        .sidebar-nav .nav-link.active {
            background: linear-gradient(135deg, rgba(231, 76, 60, 0.15), rgba(231, 76, 60, 0.05));
            color: var(--primary);
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .sidebar-nav .nav-link.active i {
            color: var(--primary);
        }

        .nav-badge {
            margin-left: auto;
            background: var(--primary);
            color: #fff;
            font-size: 0.65rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            animation: pulse-badge 2s infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-surface) 50%, var(--bg-dark) 100%);
            padding: 60px 0 50px;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(231, 76, 60, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(241, 196, 15, 0.05), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--text-white), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.8;
        }
        .page-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .page-hero .hero-tags .tag {
            background: rgba(231, 76, 60, 0.12);
            color: var(--primary-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(231, 76, 60, 0.2);
            transition: var(--transition);
        }
        .page-hero .hero-tags .tag:hover {
            background: rgba(231, 76, 60, 0.2);
            transform: translateY(-2px);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 60px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-card);
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 32px;
            max-width: 600px;
        }
        .section-header {
            margin-bottom: 36px;
        }

        /* ===== Game Cards Grid ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .game-card .card-img {
            height: 180px;
            background: var(--bg-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: var(--text-muted);
            position: relative;
            overflow: hidden;
        }
        .game-card .card-img .img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 50%, rgba(15, 15, 26, 0.9));
        }
        .game-card .card-img .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }
        .game-card .card-img .card-rate {
            position: absolute;
            bottom: 14px;
            right: 14px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(4px);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card .card-body {
            padding: 20px;
        }
        .game-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-white);
        }
        .game-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .game-card .card-body .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card .card-body .card-desc {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 12px;
        }
        .game-card .card-body .card-tags .tag {
            background: rgba(231, 76, 60, 0.08);
            color: var(--text-light);
            font-size: 0.7rem;
            padding: 3px 10px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
        }

        /* ===== Rank List ===== */
        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 14px 20px;
            transition: var(--transition);
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateX(4px);
        }
        .rank-number {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-muted);
            width: 32px;
            text-align: center;
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-number {
            color: var(--accent);
        }
        .rank-item:nth-child(2) .rank-number {
            color: var(--text-light);
        }
        .rank-item:nth-child(3) .rank-number {
            color: #cd7f32;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .rank-info .rank-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .rank-score {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
            flex-shrink: 0;
        }
        .rank-score small {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-muted);
        }

        /* ===== Category Tags ===== */
        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .category-tags .cat-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-light);
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .category-tags .cat-tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(231, 76, 60, 0.25);
        }
        .category-tags .cat-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* ===== Feature Row ===== */
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(231, 76, 60, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-card), var(--bg-surface));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(231, 76, 60, 0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-light);
            max-width: 540px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .btn-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 8px 24px rgba(231, 76, 60, 0.3);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(231, 76, 60, 0.4);
            color: #fff;
        }
        .btn-outline-cta {
            background: transparent;
            color: var(--text-white);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-cta:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(231, 76, 60, 0.05);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item h5 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item h5 i {
            color: var(--primary);
            font-size: 0.9rem;
        }
        .faq-item p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 0;
            padding-left: 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--primary);
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(231, 76, 60, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            margin-top: 32px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* ===== Mobile Toggle ===== */
        .sidebar-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1060;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-white);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            font-size: 1.3rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .sidebar-toggle:hover {
            background: var(--primary);
            border-color: var(--primary);
        }

        /* ===== Overlay ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            body {
                padding-left: 0;
            }
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-toggle {
                display: flex;
            }
            .sidebar-overlay.open {
                display: block;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 40px 0 32px;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .game-grid {
                grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
                gap: 16px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .rank-item {
                padding: 12px 16px;
                gap: 12px;
            }
            .rank-number {
                font-size: 1.1rem;
                width: 24px;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
            .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .sidebar-toggle {
                top: 12px;
                left: 12px;
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .game-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 1.3rem;
            }
            .page-hero .hero-tags .tag {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .category-tags .cat-tag {
                font-size: 0.8rem;
                padding: 6px 16px;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .btn-outline-cta {
                padding: 10px 24px;
                font-size: 0.85rem;
            }
            .faq-item {
                padding: 16px;
            }
            .faq-item h5 {
                font-size: 0.9rem;
            }
        }

        /* ===== Utility ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
:root {
            --sidebar-bg: #0f0f1a;
            --sidebar-width: 240px;
            --sidebar-brand: #f59e0b;
            --sidebar-text: rgba(255,255,255,0.75);
            --sidebar-active: #4a6cf7;
            --sidebar-hover: rgba(255,255,255,0.08);
            --main-bg: #f5f7fa;
            --card-bg: #ffffff;
            --text-primary: #1e293b;
            --text-body: #334155;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --accent: #4a6cf7;
            --accent-hover: #3b5de7;
            --gold: #f59e0b;
            --gold-light: #fbbf24;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 4px 16px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --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; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px; line-height: 1.7; color: var(--text-body); background: var(--main-bg);
        }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }
        .app-layout { display: flex; min-height: 100vh; }
        .sidebar {
            width: var(--sidebar-width); background: var(--sidebar-bg); position: fixed; top: 0; left: 0;
            bottom: 0; z-index: 1040; display: flex; flex-direction: column; overflow-y: auto;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .sidebar-brand {
            display: flex; align-items: center; gap: 10px; padding: 20px 20px 16px; border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .brand-icon {
            width: 36px; height: 36px; background: var(--gold); color: #0f0f1a; border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; flex-shrink: 0;
        }
        .brand-text { font-size: 20px; font-weight: 700; color: #fff; line-height: 1.2; }
        .brand-text span { color: var(--gold); }
        .sidebar-nav { list-style: none; padding: 12px 12px; flex: 1; display: flex; flex-direction: column; gap: 2px; }
        .sidebar-nav .nav-item { list-style: none; }
        .sidebar-nav .nav-link {
            display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-radius: var(--radius-sm);
            color: var(--sidebar-text); font-size: 0.95rem; font-weight: 500; transition: all var(--transition); text-decoration: none;
            position: relative;
        }
        .sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 1.05rem; }
        .sidebar-nav .nav-link:hover { background: var(--sidebar-hover); color: #fff; }
        .sidebar-nav .nav-link.active { background: var(--sidebar-active); color: #fff; box-shadow: 0 4px 12px rgba(74,108,247,0.35); }
        .nav-badge {
            font-size: 0.65rem; background: #ef4444; color: #fff; padding: 1px 7px; border-radius: 20px;
            margin-left: auto; font-weight: 600; letter-spacing: 0.3px;
        }
        .sidebar-footer {
            padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.06); color: rgba(255,255,255,0.35);
            font-size: 0.75rem; text-align: center;
        }
        .main-content {
            margin-left: var(--sidebar-width); flex: 1; display: flex; flex-direction: column; min-height: 100vh;
        }
        .page-header {
            background: var(--card-bg); border-bottom: 1px solid var(--border); padding: 12px 0; position: sticky; top: 0;
            z-index: 1020; backdrop-filter: blur(12px); background: rgba(255,255,255,0.92);
        }
        .page-header .container-fluid { display: flex; align-items: center; justify-content: space-between; }
        .breadcrumb-custom {
            display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap;
        }
        .breadcrumb-custom a { color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
        .breadcrumb-custom a:hover { color: var(--accent); }
        .breadcrumb-custom .sep { color: var(--text-muted); opacity: 0.5; }
        .breadcrumb-custom .current { color: var(--text-primary); font-weight: 600; }
        .mobile-toggle {
            display: none; background: none; border: none; color: var(--text-primary); font-size: 1.4rem;
            padding: 4px 8px; border-radius: var(--radius-sm); cursor: pointer; transition: background var(--transition);
        }
        .mobile-toggle:hover { background: rgba(0,0,0,0.05); }
        .article-wrap {
            flex: 1; padding: 32px 0 24px;
        }
        .article-container { max-width: 820px; margin: 0 auto; padding: 0 20px; }
        .article-card {
            background: var(--card-bg); border-radius: var(--radius-lg); box-shadow: var(--shadow);
            padding: 40px 48px; margin-bottom: 28px;
        }
        .article-category {
            display: inline-block; background: rgba(74,108,247,0.10); color: var(--accent); font-size: 0.8rem;
            font-weight: 600; padding: 4px 14px; border-radius: 20px; margin-bottom: 16px; letter-spacing: 0.3px;
        }
        .article-title {
            font-size: 2rem; font-weight: 800; color: var(--text-primary); line-height: 1.3; margin-bottom: 16px;
        }
        .article-meta {
            display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; color: var(--text-muted);
            font-size: 0.85rem; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 24px;
        }
        .article-meta i { margin-right: 5px; }
        .article-body {
            font-size: 1.05rem; line-height: 1.85; color: var(--text-body);
        }
        .article-body p { margin-bottom: 1.25rem; }
        .article-body h2, .article-body h3 { color: var(--text-primary); font-weight: 700; margin-top: 1.8rem; margin-bottom: 0.8rem; }
        .article-body h2 { font-size: 1.55rem; }
        .article-body h3 { font-size: 1.25rem; }
        .article-body img { margin: 1.5rem 0; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--accent); background: rgba(74,108,247,0.05); padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 1.5rem 0; color: var(--text-primary);
        }
        .article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
        .article-body li { margin-bottom: 0.4rem; }
        .article-footer-bar {
            display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px;
            padding-top: 20px; margin-top: 24px; border-top: 1px solid var(--border);
        }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .article-tags .tag {
            background: var(--main-bg); color: var(--text-muted); font-size: 0.8rem; padding: 4px 14px;
            border-radius: 20px; transition: all var(--transition); cursor: default;
        }
        .article-tags .tag:hover { background: var(--accent); color: #fff; }
        .article-share { display: flex; align-items: center; gap: 8px; }
        .article-share .share-btn {
            width: 36px; height: 36px; border-radius: 50%; background: var(--main-bg); border: none;
            display: flex; align-items: center; justify-content: center; color: var(--text-muted);
            font-size: 0.95rem; transition: all var(--transition); cursor: pointer;
        }
        .article-share .share-btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(74,108,247,0.30); }
        .not-found-box {
            text-align: center; padding: 60px 20px;
        }
        .not-found-box .nf-icon {
            font-size: 4rem; color: var(--text-muted); margin-bottom: 16px; opacity: 0.5;
        }
        .not-found-box h2 { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn-home {
            display: inline-flex; align-items: center; gap: 8px; padding: 10px 28px; background: var(--accent);
            color: #fff; border-radius: var(--radius-sm); font-weight: 600; border: none; transition: all var(--transition);
        }
        .not-found-box .btn-home:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(74,108,247,0.30); }
        .section-related {
            padding: 0 0 32px;
        }
        .section-related .container-fluid { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        .section-related .section-title {
            font-size: 1.35rem; font-weight: 700; color: var(--text-primary); margin-bottom: 20px; display: flex; align-items: center; gap: 10px;
        }
        .section-related .section-title i { color: var(--gold); }
        .related-card {
            background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow-sm);
            padding: 20px 22px; transition: all var(--transition); height: 100%; display: flex; flex-direction: column;
            border: 1px solid var(--border);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .related-card .rc-cat {
            font-size: 0.7rem; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .rc-title {
            font-size: 1rem; font-weight: 700; color: var(--text-primary); line-height: 1.4; margin-bottom: 8px;
            display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
        }
        .related-card .rc-title a { color: inherit; text-decoration: none; }
        .related-card .rc-title a:hover { color: var(--accent); }
        .related-card .rc-excerpt {
            font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 12px; flex: 1;
            display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
        }
        .related-card .rc-meta {
            font-size: 0.75rem; color: var(--text-muted); display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--border); padding-top: 12px;
        }
        .cta-section {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%); padding: 36px 0; margin-bottom: 0;
        }
        .cta-section .cta-box {
            text-align: center; max-width: 700px; margin: 0 auto; padding: 0 20px;
        }
        .cta-section .cta-box h3 {
            color: #fff; font-size: 1.4rem; font-weight: 700; margin-bottom: 8px;
        }
        .cta-section .cta-box p {
            color: rgba(255,255,255,0.6); font-size: 0.95rem; margin-bottom: 20px;
        }
        .cta-section .cta-btn {
            display: inline-flex; align-items: center; gap: 8px; padding: 12px 32px; background: var(--gold);
            color: #0f0f1a; border-radius: var(--radius-sm); font-weight: 700; border: none; transition: all var(--transition);
            font-size: 0.95rem;
        }
        .cta-section .cta-btn:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.35); color: #0f0f1a; }
        .site-footer {
            background: #0a0a14; color: rgba(255,255,255,0.55); padding: 40px 0 24px; margin-top: auto;
        }
        .site-footer .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
        .footer-brand { font-size: 1.35rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .footer-brand span { color: var(--gold); }
        .footer-desc { font-size: 0.85rem; line-height: 1.6; margin-bottom: 16px; color: rgba(255,255,255,0.45); }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a {
            width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex;
            align-items: center; justify-content: center; color: rgba(255,255,255,0.5); font-size: 1rem;
            transition: all var(--transition); text-decoration: none;
        }
        .footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
        .footer-links { display: flex; flex-direction: column; gap: 8px; }
        .footer-links a {
            color: rgba(255,255,255,0.45); font-size: 0.85rem; text-decoration: none; transition: color var(--transition);
        }
        .footer-links a:hover { color: var(--gold); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06); padding-top: 16px; margin-top: 28px;
            font-size: 0.75rem; color: rgba(255,255,255,0.25); text-align: center;
        }
        .sidebar-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 1035; }
        @media (max-width: 1024px) {
            .article-card { padding: 28px 24px; }
            .article-title { font-size: 1.6rem; }
        }
        @media (max-width: 768px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); box-shadow: 4px 0 40px rgba(0,0,0,0.3); }
            .sidebar-overlay.active { display: block; }
            .main-content { margin-left: 0; }
            .mobile-toggle { display: flex; align-items: center; justify-content: center; }
            .article-card { padding: 20px 16px; border-radius: var(--radius); }
            .article-title { font-size: 1.35rem; }
            .article-meta { gap: 8px 16px; font-size: 0.8rem; }
            .article-body { font-size: 0.98rem; }
            .article-container { padding: 0 12px; }
            .section-related .container-fluid { padding: 0 12px; }
            .related-card { padding: 16px 18px; }
            .cta-section .cta-box h3 { font-size: 1.15rem; }
            .site-footer .container { padding: 0 16px; }
            .page-header .container-fluid { padding: 0 12px; }
            .breadcrumb-custom { font-size: 0.78rem; }
        }
        @media (max-width: 520px) {
            .article-card { padding: 16px 12px; }
            .article-title { font-size: 1.15rem; }
            .article-body { font-size: 0.92rem; }
            .article-meta { flex-direction: column; align-items: flex-start; gap: 4px; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
            .related-card .rc-title { font-size: 0.9rem; }
            .cta-section .cta-box h3 { font-size: 1rem; }
            .cta-section .cta-btn { padding: 10px 24px; font-size: 0.85rem; }
        }

/* roulang page: category2 */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #a5b4fc;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #ec4899;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #22223a;
            --bg-surface: #16162a;
            --text-white: #f1f5f9;
            --text-muted: #9ca3af;
            --text-dim: #6b7280;
            --border-color: #2e2e4a;
            --border-light: #3e3e5e;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --sidebar-collapsed: 70px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

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

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

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* Layout: Sidebar + Main */
        .app-wrapper {
            display: flex;
            min-height: 100vh;
        }

        /* ===== SIDEBAR ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1050;
            transition: width var(--transition), transform var(--transition);
            box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
            overflow-y: auto;
            overflow-x: hidden;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 22px 20px 18px;
            border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            line-height: 1.2;
        }
        .brand-text span {
            color: var(--secondary);
        }

        .sidebar-nav {
            list-style: none;
            padding: 16px 12px;
            margin: 0;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav .nav-item {
            margin: 0;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }

        .sidebar-nav .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            flex-shrink: 0;
        }

        .sidebar-nav .nav-link span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-nav .nav-link:hover {
            background: rgba(99, 102, 241, 0.12);
            color: var(--text-white);
        }

        .sidebar-nav .nav-link.active {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(236, 72, 153, 0.08));
            color: var(--text-white);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--primary);
        }

        .sidebar-nav .nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 28px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }

        .nav-badge {
            background: linear-gradient(135deg, var(--accent), var(--secondary));
            color: #fff;
            font-size: 0.6rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: auto;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            animation: pulse-badge 2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.75rem;
            color: var(--text-dim);
            flex-shrink: 0;
            text-align: center;
        }

        /* ===== MAIN CONTENT ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .page-body {
            flex: 1;
            padding: 40px 36px 60px;
            max-width: 1240px;
            width: 100%;
            margin: 0 auto;
        }

        /* ===== TOP MOBILE BAR ===== */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1040;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .mobile-topbar .brand-text {
            font-size: 1.1rem;
        }

        .mobile-topbar .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 1rem;
        }

        .menu-toggle {
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== HERO ===== */
        .page-hero {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(236, 72, 153, 0.06));
            border-radius: var(--radius-lg);
            padding: 40px 44px 36px;
            margin-bottom: 40px;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent 70%);
            pointer-events: none;
            border-radius: 50%;
        }

        .page-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .page-hero h1 span {
            color: var(--secondary);
        }

        .page-hero p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            position: relative;
            z-index: 1;
            margin-top: 8px;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .hero-stat-item i {
            color: var(--secondary);
            font-size: 1.1rem;
        }

        .hero-stat-item strong {
            color: var(--text-white);
            font-weight: 700;
        }

        /* ===== SECTION TITLE ===== */
        .section-title-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }

        .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin: 0;
            line-height: 1.3;
        }
        .section-title small {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 400;
            display: block;
            margin-top: 4px;
        }

        .section-more {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .section-more:hover {
            color: var(--primary-light);
            gap: 10px;
        }

        /* ===== CARDS ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }

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

        .card-img-top {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
            background: var(--bg-surface);
        }

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

        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-white);
        }

        .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .card-meta i {
            margin-right: 4px;
        }

        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(99, 102, 241, 0.15);
            color: var(--primary-light);
            margin-right: 6px;
            margin-bottom: 6px;
            transition: var(--transition);
        }
        .card-tag:hover {
            background: rgba(99, 102, 241, 0.25);
            color: var(--text-white);
        }
        .card-tag.hot {
            background: rgba(245, 158, 11, 0.15);
            color: var(--secondary);
        }
        .card-tag.new {
            background: rgba(236, 72, 153, 0.15);
            color: var(--accent);
        }

        /* ===== GUIDE LIST ===== */
        .guide-list-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .guide-list-item:last-child {
            border-bottom: none;
        }
        .guide-list-item:hover {
            padding-left: 8px;
        }

        .guide-thumb {
            width: 100px;
            height: 72px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-surface);
        }

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

        .guide-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-white);
        }
        .guide-info h4 a {
            color: var(--text-white);
        }
        .guide-info h4 a:hover {
            color: var(--primary-light);
        }

        .guide-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 0.75rem;
            color: var(--text-dim);
        }
        .guide-meta i {
            margin-right: 4px;
        }
        .guide-meta .badge {
            background: rgba(99, 102, 241, 0.15);
            color: var(--primary-light);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 0.7rem;
        }

        /* ===== BADGE / TAG ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(99, 102, 241, 0.14);
            color: var(--primary-light);
            border: 1px solid rgba(99, 102, 241, 0.2);
            transition: var(--transition);
        }
        .badge-custom:hover {
            background: rgba(99, 102, 241, 0.25);
            border-color: var(--primary);
        }
        .badge-custom.gold {
            background: rgba(245, 158, 11, 0.14);
            color: var(--secondary);
            border-color: rgba(245, 158, 11, 0.2);
        }
        .badge-custom.rose {
            background: rgba(236, 72, 153, 0.14);
            color: var(--accent);
            border-color: rgba(236, 72, 153, 0.2);
        }

        /* ===== FEATURED SECTION ===== */
        .featured-grid .card-featured {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .featured-grid .card-featured:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .featured-thumb {
            height: 200px;
            background: var(--bg-surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.6rem;
            color: var(--text-dim);
            position: relative;
            overflow: hidden;
        }
        .featured-thumb .overlay-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
        }
        .featured-thumb .overlay-tag.gold {
            background: var(--secondary);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }
        .featured-thumb .overlay-tag.rose {
            background: var(--accent);
            box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
        }

        .featured-body {
            padding: 20px 22px 24px;
        }
        .featured-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .featured-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        /* ===== STEP / FLOW ===== */
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px 32px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .step-card:hover {
            border-color: var(--border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 16px;
            box-shadow: 0 6px 18px rgba(99, 102, 241, 0.3);
        }

        .step-card h5 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--text-muted);
            font-size: 0.88rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 16px 22px;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(99, 102, 241, 0.08);
            color: var(--primary-light);
        }

        .faq-accordion .accordion-button::after {
            filter: invert(1) brightness(1.8);
        }

        .faq-accordion .accordion-body {
            padding: 8px 22px 18px;
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.05));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px 44px;
            text-align: center;
            margin-top: 20px;
        }

        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            font-size: 1rem;
        }

        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.3);
        }
        .btn-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
            color: #fff;
        }
        .btn-custom i {
            font-size: 0.9rem;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: 2px solid var(--border-light);
            background: transparent;
            color: var(--text-white);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(99, 102, 241, 0.06);
            transform: translateY(-2px);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 44px 36px 32px;
            margin-top: auto;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--secondary);
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 16px;
        }

        .footer-social {
            display: flex;
            gap: 14px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 6px 18px rgba(99, 102, 241, 0.3);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            margin-top: 28px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .page-body {
                padding: 32px 24px 48px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .site-footer {
                padding: 36px 24px 28px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: 8px 0 40px rgba(0, 0, 0, 0.6);
            }

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

            .mobile-topbar {
                display: flex;
            }

            .page-body {
                padding: 24px 18px 40px;
            }

            .page-hero {
                padding: 28px 22px 30px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-stats {
                gap: 16px;
                flex-wrap: wrap;
            }

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

            .guide-list-item {
                flex-direction: column;
                gap: 12px;
            }
            .guide-thumb {
                width: 100%;
                height: 120px;
            }

            .cta-section {
                padding: 32px 22px;
            }
            .cta-section h3 {
                font-size: 1.25rem;
            }

            .featured-thumb {
                height: 160px;
            }

            .site-footer {
                padding: 28px 18px 24px;
            }

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

        @media (max-width: 520px) {
            .page-body {
                padding: 16px 12px 32px;
            }
            .page-hero {
                padding: 20px 16px 24px;
                border-radius: var(--radius-md);
            }
            .page-hero h1 {
                font-size: 1.25rem;
            }
            .hero-stat-item {
                font-size: 0.8rem;
            }
            .card-body {
                padding: 16px 16px 18px;
            }
            .section-title {
                font-size: 1.1rem;
            }
            .step-card {
                padding: 20px 16px 24px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
            .btn-custom {
                padding: 10px 24px;
                font-size: 0.85rem;
            }
            .btn-outline-custom {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .featured-thumb {
                height: 140px;
            }
        }

        /* Overlay for mobile */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1045;
            backdrop-filter: blur(4px);
        }
        .sidebar-overlay.active {
            display: block;
        }