:root {
            --brand-primary: #1A3A5F;
            --brand-primary-hover: #254C7A;
            --brand-secondary: #C0C0C8;
            --brand-secondary-hover: #D9D9E3;
            --brand-accent: #00F5FF;
            --bg-main: #050B14;
            --bg-surface: #0D1624;
            --bg-elevated: #162235;
            --text-primary: #E6EEF5;
            --text-secondary: #B0BCC7;
            --text-muted: #7B8B9D;
            --text-link: #00F5FF;
            --text-link-hover: #70F9FF;
            --btn-bg: #00F5FF;
            --btn-text: #050B14;
            --btn-hover-bg: #70F9FF;
            --border-default: #1C2B41;
            --border-brand: rgba(0, 245, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --glass-border: 1px solid rgba(0, 245, 255, 0.2);
            --glass-bg: rgba(13, 22, 36, 0.8);
        }

        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));
            background-color: var(--bg-main);
            color: var(--text-primary);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--text-link); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--text-link-hover); }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-align: center;
        }
        .btn-primary { background: var(--btn-bg); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); }
        .btn-outline { border: 1px solid var(--brand-accent); color: var(--brand-accent); background: transparent; }
        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }
        .btn-full { width: 100%; display: flex; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-default);
        }
        .header-brand { display: flex; align-items: center; gap: 10px; }
        .header-brand strong { font-size: 16px; font-weight: 400; color: var(--text-primary); }
        .header-actions { display: flex; gap: 12px; }

        main { width: 100%; }
        section { 
            padding: 40px 0; 
            content-visibility: auto; 
            contain-intrinsic-size: 1px 500px; 
        }

        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 20px; color: var(--text-primary); }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-bottom: 24px; color: var(--text-primary); }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 12px; color: var(--text-primary); }

        .hero-panel { text-align: center; padding: 40px 0; }
        .hero-intro { max-width: 800px; margin: 0 auto 30px; color: var(--text-secondary); }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
        .hero-tag { padding: 6px 14px; background: var(--bg-elevated); border: var(--glass-border); border-radius: var(--radius-pill); font-size: 0.85rem; color: var(--text-secondary); }

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

        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .category-tile { 
            background: var(--glass-bg); 
            border: var(--glass-border); 
            border-radius: var(--radius-md); 
            padding: 20px; 
            text-align: center; 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 10px;
            transition: transform 0.3s ease;
        }
        .category-tile:hover { transform: translateY(-5px); background: var(--bg-elevated); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); }
        .category-tile span { display: block; font-weight: 600; font-size: 1.1rem; color: var(--text-primary); }
        .category-tile p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        .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: var(--glass-border); 
            transition: all 0.3s ease; 
        }
        .game-card:hover { border-color: var(--brand-accent); transform: scale(1.02); }
        .game-card img { aspect-ratio: 1/1; width: 100%; object-fit: cover; }
        .game-card h3 { padding: 12px; margin: 0; font-size: 1rem; text-align: center; color: var(--text-primary); }

        .facts-container { background: var(--bg-surface); border-radius: var(--radius-lg); padding: 24px; border: var(--glass-border); }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.9rem; margin-bottom: 20px; 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; vertical-align: top; }
        .facts-label { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .facts-value { color: var(--text-primary); }
        .facts-footer { margin-top: 16px; text-align: center; font-size: 0.9rem; }

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

        .promo-card { 
            background: linear-gradient(135deg, var(--bg-elevated), var(--bg-surface)); 
            border: var(--glass-border); 
            border-radius: var(--radius-lg); 
            padding: 24px; 
            margin-bottom: 20px; 
            display: flex; 
            flex-direction: column; 
            gap: 16px;
        }
        .promo-card h3 { margin: 0; font-size: 1.4rem; }

        .usp-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
        .usp-tile { 
            display: flex; 
            align-items: center; 
            gap: 20px; 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border-left: 4px solid var(--brand-accent); 
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); width: 30px; text-align: center; }
        .usp-content strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .payment-card { 
            background: var(--bg-surface); 
            border: var(--glass-border); 
            border-radius: var(--radius-md); 
            padding: 20px; 
            text-align: center; 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 12px; 
        }
        .payment-card i { font-size: 1.8rem; color: var(--text-primary); }
        .payment-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        .step-list { display: grid; grid-template-columns: 1fr; gap: 24px; }
        .step-item { display: flex; gap: 20px; align-items: flex-start; }
        .step-num { 
            min-width: 40px; 
            height: 40px; 
            background: var(--brand-accent); 
            color: var(--bg-main); 
            border-radius: 50%; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-weight: 700; 
            flex-shrink: 0; 
        }
        .step-content h3 { margin: 0 0 8px 0; }
        .step-content h3 a { color: inherit; text-decoration: none; }

        .download-section { 
            background: var(--bg-elevated); 
            padding: 30px; 
            border-radius: var(--radius-lg); 
            text-align: center; 
            border: var(--glass-border); 
        }

        .guide-item { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            margin-bottom: 16px; 
            border: 1px solid var(--border-default); 
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; display: block; }

        .announcement-list { display: grid; grid-template-columns: 1fr; gap: 16px; }
        .announcement-card { 
            background: var(--bg-surface); 
            padding: 20px; 
            border-radius: var(--radius-md); 
            border: var(--glass-border); 
            display: flex; 
            gap: 16px; 
        }
        .announcement-card i { color: var(--brand-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 8px; }

        .faq-container { display: grid; gap: 12px; }
        .faq-item { background: var(--bg-surface); border-radius: var(--radius-md); border: var(--glass-border); }
        .faq-item summary { padding: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-answer { padding: 0 16px 16px; color: var(--text-secondary); font-size: 0.95rem; }

        .about-box { background: var(--bg-surface); padding: 30px; border-radius: var(--radius-lg); border: var(--glass-border); }
        .team-card { 
            margin-top: 24px; 
            padding: 20px; 
            background: var(--bg-elevated); 
            border-radius: var(--radius-md); 
            border: 1px dashed var(--brand-accent); 
        }

        .security-section { background: var(--bg-surface); padding: 30px; border-radius: var(--radius-lg); border: var(--glass-border); }
        .security-links { display: flex; gap: 15px; margin: 20px 0; flex-wrap: wrap; }
        .security-link { background: var(--bg-main); padding: 8px 16px; border-radius: var(--radius-pill); font-size: 0.9rem; border: 1px solid var(--border-default); }

        footer { 
            margin-top: 40px; 
            padding: 40px 0; 
            border-top: 1px solid var(--border-default); 
            text-align: center; 
            color: var(--text-muted); 
            font-size: 0.9rem; 
        }
        .footer-sitemap { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 10px; 
            margin-bottom: 30px; 
            text-align: center; 
        }
        .footer-contact { margin-bottom: 20px; }
        .footer-contact a { color: var(--text-primary); font-weight: 600; }
        .footer-legal { line-height: 1.4; max-width: 700px; margin: 0 auto; }

        .navigator { 
            position: fixed; 
            inset-inline: 0; 
            bottom: 0; 
            background: var(--glass-bg); 
            backdrop-filter: blur(10px); 
            display: flex; 
            justify-content: space-around; 
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom)); 
            border-top: 1px solid var(--border-brand); 
            z-index: 1000; 
        }
        .nav-item { 
            display: flex; 
            flex-direction: column; 
            align-items: center; 
            gap: 4px; 
            color: var(--text-secondary); 
            font-size: 0.75rem; 
            text-decoration: none; 
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link { font-size: 0.9rem; color: var(--text-link); font-weight: 500; }

        @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); }
            .step-list { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
            .usp-grid { grid-template-columns: repeat(3, 1fr); }
        }

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