/* roulang page: index */
:root {
            --primary: #0a0e27;
            --primary-light: #12183d;
            --primary-lighter: #1a2245;
            --accent-blue: #00d4ff;
            --accent-blue-dark: #009dcc;
            --accent-purple: #7c3aed;
            --accent-purple-light: #a855f7;
            --accent-green: #00ff88;
            --accent-green-dark: #00cc6a;
            --accent-pink: #ff3d71;
            --text-white: #ffffff;
            --text-light: #e8ecf4;
            --text-muted: #8a94b0;
            --text-dark: #1a1f36;
            --border-color: rgba(0, 212, 255, 0.12);
            --border-light: rgba(255, 255, 255, 0.06);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow-blue: 0 0 30px rgba(0, 212, 255, 0.15);
            --shadow-glow-purple: 0 0 30px rgba(124, 58, 237, 0.15);
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --header-height: 72px;
            --tab-height: 68px;
            --max-width: 1200px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--primary);
            color: var(--text-light);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        .container {
            max-width: var(--max-width);
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        .container-fluid {
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(10, 14, 39, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--text-white);
            letter-spacing: 0.5px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .logo:hover {
            color: var(--accent-blue);
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            font-weight: 800;
        }
        .logo span {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-desktop a {
            padding: 8px 20px;
            border-radius: 8px;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-desktop a:hover {
            color: var(--text-white);
            background: rgba(0, 212, 255, 0.06);
        }
        .nav-desktop a.active {
            color: var(--accent-blue);
            background: rgba(0, 212, 255, 0.1);
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-blue);
            border-radius: 2px;
        }

        .nav-cta {
            padding: 8px 24px !important;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)) !important;
            color: #fff !important;
            border-radius: 8px !important;
            font-weight: 600 !important;
            margin-left: 12px;
            transition: var(--transition) !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 24px rgba(0, 212, 255, 0.25) !important;
            color: #fff !important;
        }

        /* ===== MOBILE BOTTOM TAB ===== */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--tab-height);
            background: rgba(10, 14, 39, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-color);
            padding: 0 8px;
            align-items: center;
            justify-content: space-around;
        }
        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: 12px;
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
            min-width: 60px;
            position: relative;
        }
        .mobile-tab-bar .tab-item i {
            font-size: 1.3rem;
            line-height: 1;
        }
        .mobile-tab-bar .tab-item:hover {
            color: var(--text-white);
            background: rgba(0, 212, 255, 0.05);
        }
        .mobile-tab-bar .tab-item.active {
            color: var(--accent-blue);
        }
        .mobile-tab-bar .tab-item.active i {
            text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
        }
        .mobile-tab-bar .tab-item.active::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent-blue);
            border-radius: 2px;
        }
        .mobile-tab-bar .tab-item.tab-cta {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            color: #fff !important;
            border-radius: 14px;
            padding: 6px 20px;
            min-width: 80px;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
        }
        .mobile-tab-bar .tab-item.tab-cta i {
            color: #fff;
        }

        /* ===== HERO ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            padding-bottom: 40px;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            filter: brightness(0.3) saturate(1.2);
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 39, 0.85) 0%, rgba(10, 14, 39, 0.4) 50%, rgba(0, 212, 255, 0.05) 100%);
            z-index: 1;
        }
        .hero-overlay-glow {
            position: absolute;
            top: 20%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-overlay-glow-2 {
            position: absolute;
            bottom: 10%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.06) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            padding: 40px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            font-size: 0.85rem;
            color: var(--accent-blue);
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }
        .hero-badge i {
            font-size: 0.9rem;
        }
        .hero-title {
            font-size: clamp(2.2rem, 5.5vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple-light), var(--accent-green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-hero {
            padding: 14px 40px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            color: #fff;
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
        }
        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.35);
            color: #fff;
        }
        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            border: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-blue);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== SECTION COMMON ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .section-header-center {
            text-align: center;
        }
        .section-header-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FEATURES ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow-blue);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 20px;
            background: rgba(0, 212, 255, 0.08);
            color: var(--accent-blue);
        }
        .feature-card:nth-child(2) .feature-icon {
            background: rgba(124, 58, 237, 0.08);
            color: var(--accent-purple-light);
        }
        .feature-card:nth-child(3) .feature-icon {
            background: rgba(0, 255, 136, 0.08);
            color: var(--accent-green);
        }
        .feature-card:nth-child(4) .feature-icon {
            background: rgba(255, 61, 113, 0.08);
            color: var(--accent-pink);
        }
        .feature-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }
        .feature-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== TOURNAMENTS / ACTIVITIES ===== */
        .tournaments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .tournament-card {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .tournament-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow-blue);
            border-color: rgba(0, 212, 255, 0.2);
        }
        .tournament-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--primary-lighter);
        }
        .tournament-body {
            padding: 20px 20px 24px;
        }
        .tournament-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent-blue);
            margin-bottom: 10px;
        }
        .tournament-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .tournament-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .tournament-meta i {
            margin-right: 4px;
        }

        /* ===== CMS / LATEST NEWS ===== */
        .news-section {
            background: var(--primary-light);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .news-card {
            background: var(--primary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }
        .news-card:hover {
            border-color: rgba(0, 212, 255, 0.2);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-blue);
        }
        .news-category {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(124, 58, 237, 0.12);
            color: var(--accent-purple-light);
            margin-bottom: 10px;
        }
        .news-title {
            font-size: 1rem;
            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-summary {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-meta i {
            margin-right: 4px;
        }
        .news-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--primary);
            border-radius: var(--radius);
            border: 1px dashed var(--border-color);
        }

        /* ===== STATS ===== */
        .stats-section {
            position: relative;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.03) 0%, transparent 70%);
            pointer-events: none;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 24px;
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--primary);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--primary-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.15);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-blue);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--accent-blue);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.collapsed {
            display: none;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 40px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.04), rgba(124, 58, 237, 0.04));
            border: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
        }
        .cta-title {
            font-size: clamp(1.5rem, 2.5vw, 2.2rem);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-cta {
            padding: 14px 40px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            color: #fff;
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.15);
        }
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 212, 255, 0.3);
            color: #fff;
        }
        .btn-cta-secondary {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            border: 1px solid var(--border-color);
        }
        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 100px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-blue);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer-bottom-links a:hover {
            color: var(--accent-blue);
        }

        /* ===== BACK TO TOP ===== */
        .back-to-top {
            position: fixed;
            bottom: 80px;
            right: 20px;
            z-index: 1040;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
            color: #fff;
            border: none;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
            cursor: pointer;
            transition: var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
        }
        .back-to-top.show {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(0, 212, 255, 0.35);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .section-padding {
                padding: 60px 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --tab-height: 60px;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .site-footer {
                padding-bottom: 76px;
            }
            .hero-section {
                min-height: auto;
                padding-top: calc(var(--header-height) + 20px);
                padding-bottom: 40px;
            }
            .hero-stats {
                gap: 20px;
                margin-top: 32px;
                padding-top: 24px;
            }
            .hero-stat-number {
                font-size: 1.4rem;
            }
            .section-padding {
                padding: 48px 0;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .tournaments-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-hero {
                width: 100%;
                justify-content: center;
            }
            .back-to-top {
                bottom: 72px;
                right: 12px;
                width: 38px;
                height: 38px;
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-sub {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .mobile-tab-bar .tab-item {
                padding: 4px 8px;
                min-width: 50px;
                font-size: 0.65rem;
            }
            .mobile-tab-bar .tab-item i {
                font-size: 1.1rem;
            }
            .mobile-tab-bar .tab-item.tab-cta {
                padding: 4px 14px;
                min-width: 60px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .feature-card {
                padding: 24px 16px;
            }
            .tournament-body {
                padding: 16px;
            }
            .news-card {
                padding: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tournaments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        /* ===== BOOTSTRAP OVERRIDES ===== */
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)) !important;
            border: none !important;
            box-shadow: 0 4px 16px rgba(0, 212, 255, 0.15) !important;
            border-radius: 10px !important;
            font-weight: 600 !important;
            padding: 10px 28px !important;
            transition: var(--transition) !important;
        }
        .btn-primary:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 28px rgba(0, 212, 255, 0.25) !important;
        }
        .btn-outline-light {
            border-radius: 10px !important;
            border-color: var(--border-color) !important;
            color: var(--text-light) !important;
            font-weight: 600 !important;
            padding: 10px 28px !important;
            transition: var(--transition) !important;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.06) !important;
            border-color: var(--accent-blue) !important;
            color: var(--accent-blue) !important;
        }
        .accordion-button {
            background: var(--primary-light) !important;
            color: var(--text-light) !important;
            border: 1px solid var(--border-color) !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background: var(--primary-light) !important;
            color: var(--accent-blue) !important;
            border-color: rgba(0, 212, 255, 0.2) !important;
        }
        .accordion-button::after {
            filter: brightness(0.7) invert(1) !important;
        }
        .accordion-body {
            background: var(--primary) !important;
            color: var(--text-muted) !important;
            border: 1px solid var(--border-color) !important;
            border-top: none !important;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff2a2a;
            --secondary: #0b0e11;
            --accent: #ffd700;
            --bg-dark: #0b0e11;
            --bg-card: #151a1f;
            --bg-card-hover: #1c232a;
            --bg-section: #0f1318;
            --bg-light: #1a2026;
            --text-primary: #f5f5f5;
            --text-secondary: #9ca3af;
            --text-muted: #6b7280;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.16);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 12px 48px rgba(229, 9, 20, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            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;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }

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

        /* ===== Site Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(11, 14, 17, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.35);
        }
        .logo span {
            letter-spacing: 0.5px;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-desktop a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--text-primary);
        }
        .nav-desktop a:hover::after {
            width: 100%;
        }
        .nav-desktop a.active {
            color: var(--primary);
        }
        .nav-desktop a.active::after {
            width: 100%;
            background: var(--primary);
        }
        .nav-desktop .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            border: none;
        }
        .nav-desktop .nav-cta::after {
            display: none;
        }
        .nav-desktop .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(229, 9, 20, 0.35);
            color: #fff !important;
        }

        /* Mobile menu toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 28px;
            cursor: pointer;
            padding: 4px;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            color: var(--primary);
        }

        /* Mobile bottom tab */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(11, 14, 17, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-color);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            color: var(--text-muted);
            font-size: 11px;
            text-decoration: none;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-weight: 500;
        }
        .mobile-bottom-tab a i {
            font-size: 22px;
            line-height: 1;
        }
        .mobile-bottom-tab a:hover,
        .mobile-bottom-tab a.active {
            color: var(--primary);
        }
        .mobile-bottom-tab a.active {
            background: rgba(229, 9, 20, 0.1);
        }
        .mobile-bottom-tab .tab-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 4px 18px !important;
            border-radius: 50px;
        }
        .mobile-bottom-tab .tab-cta i {
            font-size: 18px;
        }

        /* ===== Article Hero / Banner ===== */
        .article-hero {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-section);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 17, 0.92) 0%, rgba(11, 14, 17, 0.6) 100%);
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-hero .breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .article-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .article-hero .breadcrumb .sep {
            color: var(--text-muted);
        }
        .article-hero .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }
        .article-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 900px;
            background: linear-gradient(135deg, #fff 60%, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .meta-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .article-hero .meta-line i {
            margin-right: 4px;
            color: var(--primary);
        }
        .article-hero .meta-line .badge-category {
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
        }

        /* ===== Article Content ===== */
        .article-content-section {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .article-content-section .container {
            max-width: 860px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-body p {
            margin-bottom: 20px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.85;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 36px;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .article-body h2 {
            font-size: 28px;
            border-left: 4px solid var(--primary);
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 22px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: var(--text-secondary);
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-body a:hover {
            color: var(--primary-light);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(229, 9, 20, 0.06);
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 28px 0;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }
        .article-body .article-cover-img {
            border-radius: var(--radius);
            margin-bottom: 32px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .tag-list .tag {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            transition: var(--transition);
        }
        .article-body .tag-list .tag:hover {
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 40px;
        }
        .not-found-box i {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(229, 9, 20, 0.3);
            color: #fff;
        }

        /* ===== Related / CTA Section ===== */
        .article-cta-section {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }
        .article-cta-section .container {
            max-width: 860px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border: 1px solid var(--border-color);
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .related-card h3 {
            font-size: 24px;
            margin-bottom: 8px;
        }
        .related-card p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .related-card .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--primary);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            text-decoration: none;
        }
        .related-card .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(229, 9, 20, 0.35);
            color: #fff;
        }
        .related-card .btn-cta i {
            font-size: 18px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 0;
            margin-bottom: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-heading {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0 24px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom-links a {
            color: var(--text-muted);
            transition: var(--transition);
            text-decoration: none;
            font-size: 13px;
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-hero h1 {
                font-size: 32px;
            }
            .article-body {
                padding: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-desktop {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(11, 14, 17, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 32px;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-card);
            }
            .nav-desktop.open {
                display: flex;
            }
            .nav-desktop a {
                font-size: 16px;
                padding: 8px 0;
            }
            .mobile-toggle {
                display: block;
            }
            .mobile-bottom-tab {
                display: flex;
            }
            .site-footer {
                margin-bottom: 56px;
            }
            .article-hero {
                padding: 120px 0 56px;
            }
            .article-hero h1 {
                font-size: 26px;
            }
            .article-hero .meta-line {
                font-size: 13px;
                gap: 12px;
            }
            .article-content-section {
                padding: 40px 0 56px;
            }
            .article-body {
                padding: 24px 20px;
                border-radius: var(--radius);
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
                flex-wrap: wrap;
            }
            .related-card {
                padding: 28px 20px;
            }
            .related-card h3 {
                font-size: 20px;
            }
            .not-found-box {
                padding: 48px 20px;
            }
            .not-found-box i {
                font-size: 48px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 22px;
            }
            .article-body {
                padding: 20px 16px;
            }
            .article-body p {
                font-size: 15px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .mobile-bottom-tab a {
                font-size: 10px;
                padding: 2px 8px;
            }
            .mobile-bottom-tab a i {
                font-size: 20px;
            }
            .related-card .btn-cta {
                padding: 12px 24px;
                font-size: 14px;
            }
            .footer-grid {
                gap: 24px;
            }
        }

        @media (min-width: 769px) {
            .mobile-toggle {
                display: none !important;
            }
            .nav-desktop {
                display: flex !important;
            }
        }

        /* ===== Utility ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-soft {
            background: rgba(229, 9, 20, 0.08);
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .gap-2 {
            gap: 12px;
        }
        .fw-600 {
            font-weight: 600;
        }
        .fs-small {
            font-size: 14px;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #0066FF;
            --clr-primary-dark: #0044CC;
            --clr-primary-light: #3388FF;
            --clr-secondary: #00CCFF;
            --clr-accent: #FF6B00;
            --clr-accent-hover: #E85D00;
            --clr-bg: #0A0E17;
            --clr-bg-alt: #111827;
            --clr-bg-card: #1A1F2E;
            --clr-bg-card-hover: #222A3E;
            --clr-text: #F1F5F9;
            --clr-text-muted: #94A3B8;
            --clr-text-dim: #64748B;
            --clr-border: #2A3347;
            --clr-glow: rgba(0, 102, 255, 0.35);
            --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 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px var(--clr-glow);
            --font-base: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-base);
            background-color: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            padding-top: var(--header-h);
        }
        a { color: var(--clr-secondary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--clr-primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; }

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

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1050;
            height: var(--header-h);
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 1.35rem; color: var(--clr-text);
            transition: var(--transition);
        }
        .logo:hover { color: var(--clr-primary-light); }
        .logo-icon {
            width: 38px; height: 38px; border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem; color: #fff;
            box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
        }
        .nav-desktop { display: flex; align-items: center; gap: 8px; }
        .nav-desktop a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--clr-text-muted);
            transition: var(--transition); position: relative;
        }
        .nav-desktop a:hover { color: var(--clr-text); background: rgba(255,255,255,0.06); }
        .nav-desktop a.active {
            color: var(--clr-text);
            background: rgba(0, 102, 255, 0.15);
        }
        .nav-desktop a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 4px;
            background: var(--clr-primary);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary)) !important;
            color: #fff !important; border-radius: var(--radius-sm) !important;
            padding: 8px 22px !important; font-weight: 600 !important;
            box-shadow: 0 0 20px rgba(0, 102, 255, 0.25);
        }
        .nav-cta:hover { box-shadow: 0 0 35px rgba(0, 102, 255, 0.45) !important; transform: translateY(-1px); }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1060;
            background: rgba(10, 14, 23, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--clr-border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            justify-content: space-around;
        }
        .mobile-tab-bar a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            padding: 6px 12px; border-radius: var(--radius-sm);
            font-size: 0.7rem; color: var(--clr-text-dim); transition: var(--transition);
            min-width: 60px;
        }
        .mobile-tab-bar a i { font-size: 1.25rem; }
        .mobile-tab-bar a:hover { color: var(--clr-text); }
        .mobile-tab-bar a.active { color: var(--clr-primary); }
        .mobile-tab-bar a.active i { text-shadow: 0 0 20px rgba(0, 102, 255, 0.5); }
        .mobile-tab-bar .tab-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff !important; border-radius: 50%; width: 48px; height: 48px;
            justify-content: center; padding: 0; margin-top: -8px;
            box-shadow: 0 0 25px rgba(0, 102, 255, 0.35);
        }
        .mobile-tab-bar .tab-cta i { font-size: 1.4rem; }

        /* ===== Hero ===== */
        .hero-section {
            position: relative; min-height: 85vh;
            display: flex; align-items: center; justify-content: center;
            text-align: center; padding: 80px 0;
            background: linear-gradient(135deg, #0A0E17 0%, #111827 50%, #0D1B2E 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.25; z-index: 0;
        }
        .hero-section::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(0,102,255,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(0,204,255,0.1) 0%, transparent 50%);
            z-index: 1;
        }
        .hero-content { position: relative; z-index: 2; max-width: 860px; }
        .hero-badge {
            display: inline-block; padding: 6px 20px; border-radius: 50px;
            background: rgba(0, 102, 255, 0.15); border: 1px solid rgba(0, 102, 255, 0.3);
            font-size: 0.85rem; color: var(--clr-secondary); margin-bottom: 24px;
            letter-spacing: 1px; backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 800;
            line-height: 1.15; margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 30%, var(--clr-secondary) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 1.15rem; color: var(--clr-text-muted);
            max-width: 680px; margin: 0 auto 36px; line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .btn-primary-custom {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff; font-weight: 700; font-size: 1.05rem;
            border: none; cursor: pointer; transition: var(--transition);
            box-shadow: 0 0 30px rgba(0, 102, 255, 0.3);
        }
        .btn-primary-custom:hover {
            box-shadow: 0 0 50px rgba(0, 102, 255, 0.5);
            transform: translateY(-3px); color: #fff;
        }
        .btn-outline-custom {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 14px 36px; border-radius: var(--radius-md);
            background: transparent; color: var(--clr-text);
            font-weight: 600; font-size: 1.05rem;
            border: 1.5px solid var(--clr-border); cursor: pointer; transition: var(--transition);
        }
        .btn-outline-custom:hover {
            border-color: var(--clr-primary); color: var(--clr-text);
            background: rgba(0, 102, 255, 0.08);
        }
        .hero-stats {
            display: flex; gap: 40px; justify-content: center; margin-top: 50px;
            flex-wrap: wrap;
        }
        .hero-stat-item { text-align: center; }
        .hero-stat-num {
            font-size: 2rem; font-weight: 800;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stat-label { font-size: 0.85rem; color: var(--clr-text-dim); margin-top: 2px; }

        /* ===== Section Common ===== */
        .section-block { padding: 90px 0; }
        .section-block-alt { background: var(--clr-bg-alt); }
        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700;
            text-align: center; margin-bottom: 14px;
        }
        .section-sub {
            text-align: center; color: var(--clr-text-muted);
            max-width: 640px; margin: 0 auto 50px; font-size: 1.05rem;
        }

        /* ===== Cards ===== */
        .card-custom {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-md); padding: 32px 24px;
            transition: var(--transition); height: 100%;
        }
        .card-custom:hover {
            background: var(--clr-bg-card-hover);
            border-color: rgba(0, 102, 255, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
        }
        .card-icon {
            width: 56px; height: 56px; border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(0,102,255,0.15), rgba(0,204,255,0.1));
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; color: var(--clr-secondary); margin-bottom: 18px;
        }
        .card-custom h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 10px; }
        .card-custom p { color: var(--clr-text-muted); font-size: 0.95rem; line-height: 1.7; }

        /* ===== Feature Grid ===== */
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-card {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-md); padding: 36px 28px;
            transition: var(--transition); text-align: center;
        }
        .feature-card:hover {
            border-color: rgba(0, 102, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .feature-card .card-icon { margin: 0 auto 18px; }
        .feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 10px; }
        .feature-card p { color: var(--clr-text-muted); font-size: 0.92rem; line-height: 1.7; }

        /* ===== Cover Image ===== */
        .cover-img-wrapper {
            border-radius: var(--radius-md); overflow: hidden;
            border: 1px solid var(--clr-border); transition: var(--transition);
        }
        .cover-img-wrapper:hover { border-color: rgba(0, 102, 255, 0.3); }
        .cover-img-wrapper img { width: 100%; height: 220px; object-fit: cover; transition: var(--transition); }
        .cover-img-wrapper:hover img { transform: scale(1.03); }

        /* ===== Tournaments ===== */
        .tournament-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .tournament-item {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-sm); padding: 24px 16px; text-align: center;
            transition: var(--transition);
        }
        .tournament-item:hover {
            border-color: rgba(0, 102, 255, 0.3);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
        }
        .tournament-item .t-icon { font-size: 2.2rem; margin-bottom: 10px; }
        .tournament-item h4 { font-size: 1rem; font-weight: 600; }
        .tournament-item p { font-size: 0.82rem; color: var(--clr-text-dim); margin-top: 4px; }

        /* ===== Process / Steps ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .process-step {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-md); padding: 32px 20px; text-align: center;
            transition: var(--transition); position: relative;
        }
        .process-step:hover {
            border-color: rgba(0, 102, 255, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .step-number {
            width: 48px; height: 48px; border-radius: 50%;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            color: #fff; font-weight: 800; font-size: 1.2rem;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px; box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
        }
        .process-step h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
        .process-step p { color: var(--clr-text-muted); font-size: 0.88rem; line-height: 1.6; }

        /* ===== Stats ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-box {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-md); padding: 32px 16px; text-align: center;
            transition: var(--transition);
        }
        .stat-box:hover { border-color: rgba(0, 102, 255, 0.3); }
        .stat-number {
            font-size: 2.6rem; font-weight: 800; line-height: 1.2;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label { font-size: 0.92rem; color: var(--clr-text-muted); margin-top: 4px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--clr-bg-card); border: 1px solid var(--clr-border);
            border-radius: var(--radius-sm); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(0, 102, 255, 0.2); }
        .faq-question {
            padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
            cursor: pointer; font-weight: 500; font-size: 1rem;
            user-select: none; transition: var(--transition);
        }
        .faq-question:hover { background: rgba(255,255,255,0.02); }
        .faq-question i { transition: var(--transition); color: var(--clr-text-dim); font-size: 1.1rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--clr-primary); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
            padding: 0 24px; color: var(--clr-text-muted); font-size: 0.92rem; line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px; padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 204, 255, 0.04));
            border: 1px solid rgba(0, 102, 255, 0.2);
            border-radius: var(--radius-lg); padding: 64px 40px; text-align: center;
            position: relative; overflow: hidden;
        }
        .cta-block::before {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at center, rgba(0,102,255,0.1) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-block > * { position: relative; z-index: 1; }
        .cta-block h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 14px; }
        .cta-block p { color: var(--clr-text-muted); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-bg-alt); border-top: 1px solid var(--clr-border);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 1.2rem; margin-bottom: 14px; }
        .footer-desc { color: var(--clr-text-dim); font-size: 0.9rem; line-height: 1.7; margin-top: 12px; }
        .footer-heading {
            font-weight: 600; font-size: 1rem; margin-bottom: 16px;
            color: var(--clr-text);
        }
        .footer-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-links a {
            color: var(--clr-text-dim); font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-links a:hover { color: var(--clr-secondary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid var(--clr-border); padding-top: 24px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px;
            color: var(--clr-text-dim); font-size: 0.85rem;
        }
        .footer-bottom-links { display: flex; gap: 20px; }
        .footer-bottom-links a { color: var(--clr-text-dim); font-size: 0.85rem; }
        .footer-bottom-links a:hover { color: var(--clr-secondary); }

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

        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .mobile-tab-bar { display: flex; }
            body { padding-bottom: 70px; }
            .hero-section { min-height: 70vh; padding: 60px 0; }
            .hero-stats { gap: 24px; }
            .section-block { padding: 60px 0; }
            .feature-grid { grid-template-columns: 1fr; }
            .tournament-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-block { padding: 40px 24px; }
        }

        @media (max-width: 520px) {
            .hero-title { font-size: 2rem; }
            .hero-sub { font-size: 1rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .tournament-grid { grid-template-columns: 1fr 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .section-title { font-size: 1.5rem; }
            .hero-stat-num { font-size: 1.5rem; }
        }

        /* ===== Misc Utilities ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-2 { gap: 8px; }
        .gap-3 { gap: 16px; }
        .mt-1 { margin-top: 4px; }
        .me-1 { margin-right: 4px; }
        .mb-1 { margin-bottom: 4px; }
        .mb-2 { margin-bottom: 8px; }
        .mb-3 { margin-bottom: 16px; }
        .mb-4 { margin-bottom: 24px; }
        .mb-5 { margin-bottom: 40px; }