:root {
            --primary-color: #0B2447;
            --primary-hover: #153A7A;
            --secondary-color: #C0C0C8;
            --secondary-hover: #E0E0E8;
            --accent-color: #00F5FF;
            --bg-main: #050B18;
            --bg-surface: #0D162A;
            --bg-elevated: #16223D;
            --text-primary: #E6EEFF;
            --text-secondary: #B0C4DE;
            --text-muted: #788DA7;
            --brand-contrast: #050B18;
            --link-color: #00F5FF;
            --link-hover: #70F9FF;
            --btn-bg: #00F5FF;
            --btn-text: #050B18;
            --btn-hover-bg: #70F9FF;
            --border-default: #1C2D52;
            --border-brand: #00F5FF;
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --glass-bg: rgba(13, 22, 42, 0.7);
            --glass-border: rgba(0, 245, 255, 0.3);
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(15px, 3.9vw, 16px);
            line-height: 1.65;
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
            background-color: var(--bg-main);
            color: var(--text-primary);
            background-image: radial-gradient(circle at top right, #16223D, #050B18);
        }
        img, video, iframe { max-width: 100%; height: auto; display: block; }
        a { color: var(--link-color); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--link-hover); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-logo-link { display: flex; align-items: center; gap: 8px; }
        .header-logo-link strong { font-size: 16px; font-weight: normal; color: var(--text-primary); }
        .header-actions { display: flex; gap: 12px; }
        .btn-auth {
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
        }
        .btn-login { background: transparent; border: 1px solid var(--border-brand); color: var(--accent-color); }
        .btn-login:hover { background: var(--border-brand); color: var(--bg-main); }
        .btn-register { background: var(--btn-bg); color: var(--btn-text); }
        .btn-register:hover { background: var(--btn-hover-bg); }

        main { max-width: 1200px; margin: 0 auto; }

        .hero-section { text-align: center; padding: 40px 0; }
        h1 { 
            font-size: clamp(1.6rem, 6.5vw, 2.4rem); 
            line-height: 1.2; 
            margin-bottom: 20px; 
            color: var(--text-primary); 
            font-family: 'Be Vietnam Pro', sans-serif;
        }
        .hero-intro { 
            font-size: 1.1rem; 
            color: var(--text-secondary); 
            margin-bottom: 30px; 
            max-width: 800px; 
            margin-inline: auto; 
        }
        .hero-cta { 
            display: block; 
            width: 100%; 
            max-width: 400px; 
            margin: 0 auto 30px; 
            padding: 16px; 
            background: linear-gradient(180deg, #00F5FF 0%, #00D1DB 100%); 
            color: var(--bg-main); 
            text-align: center; 
            border-radius: var(--radius-pill); 
            font-weight: 700; 
            font-size: 1.2rem; 
            box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
        }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
        .hero-tag { 
            background: var(--bg-elevated); 
            color: var(--accent-color); 
            padding: 4px 12px; 
            border-radius: var(--radius-pill); 
            font-size: 0.85rem; 
            border: 1px solid var(--glass-border);
        }

        .banner-link img { 
            width: 100%; 
            aspect-ratio: 2 / 1; 
            object-fit: cover; 
            border-radius: var(--radius-md); 
        }

        .category-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 16px; 
            margin: 40px 0; 
        }
        .category-tile { 
            background: var(--glass-bg); 
            backdrop-filter: blur(10px); 
            border: 1px solid var(--glass-border); 
            border-radius: var(--radius-lg); 
            padding: 20px; 
            text-align: center; 
            transition: transform 0.2s ease; 
        }
        .category-tile:hover { transform: translateY(-5px); border-color: var(--accent-color); }
        .category-tile i { font-size: 2rem; color: var(--accent-color); margin-bottom: 12px; }
        .category-tile strong { display: block; font-size: 1.1rem; color: var(--text-primary); margin-bottom: 8px; }
        .category-tile span { font-size: 0.9rem; color: var(--text-muted); }

        h2 { 
            font-size: clamp(1.3rem, 5.2vw, 1.8rem); 
            line-height: 1.25; 
            margin-top: 40px; 
            margin-bottom: 20px; 
            color: var(--text-primary); 
            border-left: 4px solid var(--accent-color); 
            padding-left: 15px; 
        }
        h3 { 
            font-size: clamp(1.05rem, 4.2vw, 1.25rem); 
            line-height: 1.3; 
            color: var(--text-primary); 
            margin-bottom: 10px; 
        }

        .game-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 16px; 
        }
        .game-card { 
            background: var(--bg-surface); 
            border-radius: var(--radius-md); 
            overflow: hidden; 
            border: 1px solid var(--border-default); 
            transition: border-color 0.2s ease; 
        }
        .game-card:hover { border-color: var(--accent-color); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card-info { padding: 12px; text-align: center; }
        .game-card-info h3 { font-size: 1rem; margin: 0; }

        .facts-container { 
            background: var(--bg-surface); 
            border-radius: var(--radius-lg); 
            padding: 24px; 
            border: 1px solid var(--border-default); 
            margin-bottom: 20px; 
        }
        .freshness-notice { 
            font-style: italic; 
            color: var(--text-muted); 
            font-size: 0.9rem; 
            margin-bottom: 15px; 
            display: block; 
        }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table tr { border-bottom: 1px solid var(--border-default); }
        .facts-table td { padding: 12px 8px; color: var(--text-secondary); }
        .facts-table td:first-child { font-weight: 600; color: var(--text-primary); width: 40%; }
        .terms-link-wrapper { margin-top: 15px; font-size: 0.85rem; text-align: center; }
        .terms-link-wrapper a { color: var(--text-muted); }

        .toc-nav { 
            display: flex; 
            overflow-x: auto; 
            gap: 12px; 
            padding: 10px 0; 
            margin: 20px 0; 
            scrollbar-width: none; 
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link { 
            background: var(--bg-elevated); 
            color: var(--text-secondary); 
            padding: 8px 16px; 
            border-radius: var(--radius-pill); 
            white-space: nowrap; 
            font-size: 0.9rem; 
            border: 1px solid var(--border-default); 
        }
        .toc-link:hover { background: var(--border-default); color: var(--accent-color); }

        .promo-list { display: flex; flex-direction: column; gap: 20px; }
        .promo-card { 
            background: var(--bg-surface); 
            border: 1px solid var(--border-default); 
            border-radius: var(--radius-lg); 
            padding: 24px; 
            display: flex; 
            flex-direction: column; 
            gap: 15px; 
        }
        .promo-card h3 { margin: 0; color: var(--accent-color); }
        .promo-card p { margin: 0; color: var(--text-secondary); }
        .btn-promo { 
            align-self: flex-start; 
            padding: 10px 20px; 
            background: var(--btn-bg); 
            color: var(--btn-text); 
            border-radius: var(--radius-md); 
            font-weight: 600; 
        }

        .usp-grid { display: flex; flex-direction: column; gap: 16px; }
        .usp-item { 
            display: flex; 
            align-items: center; 
            gap: 15px; 
            background: var(--bg-surface); 
            padding: 16px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
        }
        .usp-item i { font-size: 1.5rem; color: var(--accent-color); width: 30px; text-align: center; }
        .usp-content strong { display: block; color: var(--text-primary); margin-bottom: 4px; }
        .usp-content span { font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 16px; 
        }
        .payment-card { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            text-align: center; 
            border: 1px solid var(--border-default); 
        }
        .payment-card i { font-size: 2rem; color: var(--accent-color); margin-bottom: 12px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; }
        .guide-step { 
            display: flex; 
            gap: 16px; 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
        }
        .step-badge { 
            width: 32px; 
            height: 32px; 
            background: var(--accent-color); 
            color: var(--bg-main); 
            border-radius: 50%; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-weight: 700; 
            flex-shrink: 0; 
        }
        .step-text h3 { margin: 0 0 8px 0; }
        .step-text a { color: inherit; text-decoration: none; }

        .download-panel { 
            background: var(--bg-surface); 
            padding: 30px; 
            border-radius: var(--radius-lg); 
            text-align: center; 
            border: 1px solid var(--border-brand); 
        }
        .btn-download { 
            display: inline-block; 
            padding: 14px 30px; 
            background: var(--btn-bg); 
            color: var(--btn-text); 
            border-radius: var(--radius-pill); 
            font-weight: 700; 
            margin-top: 20px; 
        }

        .player-guides { display: flex; flex-direction: column; gap: 20px; }
        .guide-card { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: 1px solid var(--border-default); 
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }

        .announcements-list { display: flex; flex-direction: column; gap: 16px; }
        .announcement-item { 
            display: flex; 
            gap: 15px; 
            background: var(--bg-surface); 
            padding: 16px; 
            border-radius: var(--radius-md); 
            border-left: 4px solid var(--accent-color); 
        }
        .announcement-item i { color: var(--accent-color); font-size: 1.2rem; margin-top: 4px; }
        .announcement-info h3 { font-size: 1.1rem; margin: 0 0 8px 0; }
        .announcement-info p { margin: 0 0 8px 0; font-size: 0.9rem; color: var(--text-secondary); }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); }

        .faq-section { display: flex; flex-direction: column; gap: 12px; }
        details { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-md); }
        summary { padding: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        summary::-webkit-details-marker { display: none; }
        summary h3 { margin: 0; font-size: 1.05rem; }
        .faq-answer { padding: 0 16px 16px; color: var(--text-secondary); font-size: 0.95rem; }

        .about-content { background: var(--bg-surface); padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .team-card { 
            margin-top: 20px; 
            padding: 20px; 
            background: var(--bg-elevated); 
            border-radius: var(--radius-md); 
            border: 1px solid var(--glass-border); 
        }

        .security-grid { 
            display: grid; 
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
            gap: 20px; 
            margin-bottom: 24px; 
        }
        .security-item { background: var(--bg-surface); padding: 20px; border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .rg-links { display: flex; gap: 15px; margin-bottom: 20px; flex-wrap: wrap; }
        .rg-link { background: var(--bg-elevated); padding: 8px 16px; border-radius: var(--radius-md); font-size: 0.9rem; border: 1px solid var(--border-default); }

        footer { 
            margin-top: 60px; 
            padding: 40px 0; 
            border-top: 1px solid var(--border-default); 
            text-align: center; 
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 12px; 
            max-width: 800px; 
            margin: 0 auto 30px; 
        }
        .footer-sitemap a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-contact { margin-bottom: 20px; color: var(--text-secondary); }
        .footer-legal { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            background: var(--bg-surface); 
            backdrop-filter: blur(15px); 
            border-top: 1px solid var(--border-brand); 
            display: flex; 
            justify-content: space-around; 
            align-items: center; 
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom)); 
            z-index: 1000; 
        }
        .nav-item { text-align: center; color: var(--text-secondary); flex: 1; }
        .nav-item i { display: block; font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item span { font-size: 0.7rem; font-weight: 500; }

        .util-link { color: var(--accent-color); font-weight: 600; display: block; text-align: center; margin-top: 10px; }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .category-grid { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { display: none; }
            .hero-section { padding: 80px 0; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
        }

        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }