:root {
            --brand-primary: #0072FF;
            --brand-primary-hover: #338BFF;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F5FF;
            --bg-main: #050A18;
            --bg-surface: #0D152B;
            --bg-elevated: #16213D;
            --text-primary: #E6EEFF;
            --text-secondary: #B0B9D1;
            --text-muted: #7A86A1;
            --border-default: #1C2C55;
            --border-brand: #00F5FF;
            --grad-brand: linear-gradient(135deg, #0072FF 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at top right, #16213D 0%, #050A18 100%);
            --radius-md: 12px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
        }

        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;
            color: var(--text-primary);
            background: var(--bg-main);
            background-image: var(--grad-hero);
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; font-style: italic; }
        a { color: var(--brand-accent); text-decoration: none; transition: color 0.3s; }
        a:hover { color: #33D9FF; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 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: 400; }

        .nav-actions { display: flex; gap: 12px; }
        .btn-nav {
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.875rem;
            background: var(--bg-elevated);
            color: var(--text-primary);
            border: 1px solid var(--border-default);
        }
        .btn-nav-primary { background: var(--brand-primary); border-color: var(--brand-primary); }
        .btn-nav-primary:hover { background: var(--brand-primary-hover); }

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

        .hero-section { text-align: center; padding: 2rem 0; }
        .hero-section h1 {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 1.5rem;
            background: var(--grad-brand);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-intro {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 800px;
            margin-inline: auto;
        }
        .btn-hero-cta {
            display: block;
            width: 100%;
            padding: 16px;
            background: var(--grad-brand);
            color: var(--bg-main);
            text-align: center;
            font-weight: 700;
            font-size: 1.2rem;
            border-radius: var(--radius-md);
            margin-bottom: 1.5rem;
            box-shadow: 0 0 15px rgba(0, 245, 255, 0.4);
        }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
        .tag-pill {
            padding: 4px 12px;
            background: rgba(0, 114, 255, 0.1);
            border: 1px solid var(--border-brand);
            border-radius: 9999px;
            font-size: 0.8rem;
            color: var(--brand-accent);
        }

        .banner-wrap { margin: 2rem 0; }
        .banner-wrap img { border-radius: var(--radius-lg); width: 100%; aspect-ratio: 2/1; object-fit: cover; }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 3rem;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: transform 0.3s, border-color 0.3s;
        }
        .category-tile:hover { transform: translateY(-5px); border-color: var(--brand-accent); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .category-tile span { display: block; font-weight: 600; font-size: 1.1rem; margin-bottom: 8px; }
        .category-tile p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }

        .section-title { font-size: clamp(1.3rem, 5.2vw, 1.8rem); text-align: center; margin-bottom: 1.5rem; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 3rem;
        }
        .game-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .game-card:hover { border-color: var(--brand-accent); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 {
            font-size: 1rem;
            padding: 12px;
            margin: 0;
            text-align: center;
            color: var(--text-primary);
        }

        .facts-wrap {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 3rem;
        }
        .facts-notice { font-style: italic; color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1rem; text-align: center; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table tr { border-bottom: 1px solid var(--border-default); }
        .facts-table td { padding: 12px; font-size: 0.95rem; }
        .facts-label { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .facts-value { color: var(--text-primary); }
        .facts-footer-link { display: block; text-align: center; margin-top: 1rem; font-size: 0.85rem; color: var(--text-muted); }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 10px 0;
            margin-bottom: 3rem;
            scrollbar-width: none;
        }
        .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);
        }
        .toc-link:hover { border-color: var(--brand-accent); }

        .promo-container { display: flex; flex-direction: column; gap: 20px; margin-bottom: 3rem; }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 24px;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--brand-primary);
        }
        .promo-card h3 { margin-top: 0; color: var(--brand-accent); }
        .promo-card p { color: var(--text-secondary); margin-bottom: 1.5rem; }
        .btn-promo {
            display: inline-block;
            padding: 10px 20px;
            background: var(--brand-primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .usp-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 3rem; }
        .usp-tile {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: center;
        }
        .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; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 3rem;
        }
        .payment-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .payment-card i { font-size: 2rem; color: var(--brand-primary); margin-bottom: 10px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: grid; grid-template-columns: 1fr; gap: 20px; margin-bottom: 3rem; }
        .step-item {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            align-items: flex-start;
        }
        .step-num {
            background: var(--brand-primary);
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-weight: 700;
        }
        .step-content h3 { margin: 0 0 10px 0; font-size: 1.1rem; }
        .step-content a { color: inherit; }

        .download-section {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-bottom: 3rem;
            border: 1px solid var(--border-default);
        }
        .btn-download {
            display: inline-block;
            padding: 16px 32px;
            background: var(--grad-brand);
            color: var(--bg-main);
            font-weight: 700;
            border-radius: var(--radius-md);
            margin: 20px 0;
        }

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

        .announcement-list { display: flex; flex-direction: column; gap: 15px; margin-bottom: 3rem; }
        .announcement-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            border: 1px solid var(--border-default);
        }
        .announcement-item i { color: var(--brand-accent); margin-top: 5px; }
        .announcement-info h3 { margin: 0 0 8px 0; font-size: 1.1rem; }
        .announcement-info p { margin: 0 0 8px 0; font-size: 0.9rem; color: var(--text-secondary); }
        .announcement-date { font-size: 0.75rem; color: var(--text-muted); }

        .faq-item { margin-bottom: 15px; background: var(--bg-surface); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-default); }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; display: flex; align-items: center; }
        .faq-item summary h3 { margin: 0; font-size: 1rem; color: var(--text-primary); }
        .faq-item p { padding: 15px; margin: 0; color: var(--text-secondary); border-top: 1px solid var(--border-default); }

        .about-box {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin-bottom: 3rem;
            border: 1px solid var(--border-default);
        }
        .team-card {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-top: 20px;
            border: 1px solid var(--border-brand);
        }

        .security-box {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin-bottom: 3rem;
            border: 1px solid var(--border-default);
        }
        .security-links { display: flex; gap: 20px; margin: 20px 0; }

        footer {
            background: var(--bg-surface);
            padding: 40px 0 20px 0;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
            text-align: left;
        }
        .footer-sitemap a { color: var(--text-muted); font-size: 0.9rem; }
        .footer-contact { margin-bottom: 20px; font-size: 0.95rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.7rem;
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link { display: inline-block; margin-top: 1rem; color: var(--brand-accent); font-weight: 600; }

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

        @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); }
            .guide-steps { grid-template-columns: repeat(2, 1fr); }
            .navigator { display: none; }
            .footer-sitemap { grid-template-columns: repeat(5, 1fr); }
        }

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