:root {
            --color-primary: #0A2540;
            --color-primary-hover: #123A61;
            --color-secondary: #C0C0C8;
            --color-secondary-hover: #D1D1D9;
            --color-accent: #00F5FF;
            --color-bg-main: #050B14;
            --color-bg-surface: #0C1624;
            --color-bg-elevated: #152133;
            --color-text-primary: #E6EBF2;
            --color-text-secondary: #A0AEC0;
            --color-text-muted: #718096;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050B14;
            --color-btn-hover: #70F9FF;
            --color-border: #1E2D42;
            --color-border-strong: #2D415D;
            --color-border-brand: rgba(0, 245, 255, 0.4);
            --font-headings: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Be Vietnam Pro', sans-serif;
            --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(12, 22, 36, 0.75);
            --glass-border: 1px solid rgba(0, 245, 255, 0.3);
        }
        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            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(--color-bg-main);
            color: var(--color-text-primary);
            overflow-x: hidden;
        }
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin-inline: auto;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            color: inherit;
        }
        .header-logo-text {
            font-size: 16px;
            font-weight: 400;
        }
        .header-actions {
            display: flex;
            gap: 12px;
        }
        .btn-nav {
            text-decoration: none;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.875rem;
            transition: all 0.2s ease;
        }
        .btn-login {
            color: var(--color-text-primary);
            background: var(--color-bg-elevated);
            border: 1px solid var(--color-border);
        }
        .btn-login:hover { background: var(--color-border-strong); }
        .btn-register {
            background: var(--color-btn-bg);
            color: var(--color-btn-text);
        }
        .btn-register:hover { background: var(--color-btn-hover); }
        main { max-width: 1200px; margin-inline: auto; }
        .hero-section {
            padding: 40px 0;
            text-align: center;
        }
        h1 {
            font-family: var(--font-headings);
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--color-accent);
        }
        .hero-intro {
            max-width: 800px;
            margin: 0 auto 30px;
            color: var(--color-text-secondary);
        }
        .cta-main {
            display: block;
            width: 100%;
            max-width: 400px;
            margin: 0 auto 30px;
            padding: 16px;
            background: linear-gradient(180deg, #00F5FF 0%, #00D1DD 100%);
            color: var(--color-btn-text);
            text-decoration: none;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.25rem;
            box-shadow: 0 0 15px rgba(0, 245, 255, 0.5);
        }
        .feature-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .tag-pill {
            padding: 6px 14px;
            background: var(--glass-bg);
            border: var(--glass-border);
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            color: var(--color-accent);
            backdrop-filter: blur(4px);
        }
        .banner-link {
            display: block;
            width: 100%;
            margin: 0;
            padding: 0;
            text-decoration: none;
        }
        .banner-img {
            width: 100%;
            aspect-ratio: 2 / 1;
            object-fit: cover;
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin: 40px 0;
        }
        .category-tile {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 20px;
            background: var(--color-bg-surface);
            border: var(--glass-border);
            border-radius: var(--radius-md);
            text-decoration: none;
            color: inherit;
            transition: transform 0.2s ease;
        }
        .category-tile:hover { transform: translateY(-5px); }
        .category-tile i {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .category-tile strong {
            display: block;
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--color-text-primary);
        }
        .category-tile span {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .game-card {
            text-decoration: none;
            color: inherit;
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: var(--glass-border);
            transition: opacity 0.2s ease;
        }
        .game-card:hover { opacity: 0.9; }
        .game-card img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
        }
        .game-card h3 {
            padding: 12px;
            margin: 0;
            font-size: 1rem;
            text-align: center;
            color: var(--color-text-primary);
        }
        .facts-section {
            background: var(--color-bg-surface);
            padding: 30px 20px;
            border-radius: var(--radius-lg);
            margin: 40px 0;
            border: var(--glass-border);
        }
        .freshness-notice {
            font-style: italic;
            color: var(--color-text-muted);
            font-size: 0.875rem;
            margin-bottom: 20px;
            display: block;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
        }
        .facts-table tr { border-bottom: 1px solid var(--color-border); }
        .facts-table td { padding: 12px 8px; font-size: 0.9rem; }
        .facts-label { color: var(--color-text-secondary); width: 40%; }
        .facts-value { color: var(--color-text-primary); font-weight: 500; }
        .terms-link-wrap {
            text-align: center;
            font-size: 0.85rem;
        }
        .terms-link-wrap a { color: var(--color-text-muted); text-decoration: underline; }
        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 20px 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            padding: 8px 16px;
            background: var(--color-bg-elevated);
            color: var(--color-text-primary);
            text-decoration: none;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.875rem;
            border: 1px solid var(--color-border);
        }
        .promo-grid {
            display: grid;
            gap: 20px;
            margin-bottom: 40px;
        }
        .promo-card {
            background: linear-gradient(135deg, var(--color-bg-surface) 0%, var(--color-bg-elevated) 100%);
            padding: 24px;
            border-radius: var(--radius-md);
            border: var(--glass-border);
            text-align: center;
        }
        .promo-card h3 { margin-top: 0; color: var(--color-accent); }
        .promo-card p { color: var(--color-text-secondary); margin-bottom: 20px; }
        .btn-promo {
            display: inline-block;
            padding: 12px 24px;
            background: var(--color-btn-bg);
            color: var(--color-btn-text);
            text-decoration: none;
            border-radius: var(--radius-pill);
            font-weight: 600;
        }
        .usp-grid {
            display: grid;
            gap: 20px;
            margin: 40px 0;
        }
        .usp-card {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            border: var(--glass-border);
        }
        .usp-card i { font-size: 1.5rem; color: var(--color-accent); }
        .usp-content strong { display: block; color: var(--color-text-primary); margin-bottom: 4px; }
        .usp-content span { font-size: 0.9rem; color: var(--color-text-secondary); }
        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .payment-card {
            padding: 20px;
            background: var(--color-bg-surface);
            border: var(--glass-border);
            border-radius: var(--radius-md);
            text-align: center;
        }
        .payment-card i { font-size: 1.5rem; color: var(--color-accent); margin-bottom: 10px; display: block; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.8rem; color: var(--color-text-secondary); margin: 0; }
        .guide-steps {
            display: grid;
            gap: 24px;
            margin-bottom: 40px;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .step-badge {
            min-width: 40px;
            height: 40px;
            background: var(--color-accent);
            color: var(--color-bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .step-content h3 { margin: 0 0 8px; color: var(--color-text-primary); }
        .step-content h3 a { color: inherit; text-decoration: none; }
        .step-content p { margin: 0; color: var(--color-text-secondary); }
        .download-section {
            text-align: center;
            padding: 40px 20px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            margin-bottom: 40px;
            border: var(--glass-border);
        }
        .btn-download {
            display: inline-block;
            padding: 16px 32px;
            background: var(--color-btn-bg);
            color: var(--color-btn-text);
            text-decoration: none;
            border-radius: var(--radius-pill);
            font-weight: 700;
            margin-top: 20px;
        }
        .player-guides {
            display: grid;
            gap: 20px;
            margin-bottom: 40px;
        }
        .guide-card {
            padding: 20px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            border: var(--glass-border);
        }
        .guide-card h3 { margin: 0 0 4px; }
        .guide-meta { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 12px; display: block; }
        .announcement-list {
            display: grid;
            gap: 16px;
            margin-bottom: 40px;
        }
        .announcement-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            border: var(--glass-border);
        }
        .announcement-item i { color: var(--color-accent); margin-top: 4px; }
        .announcement-date { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-top: 8px; }
        .faq-section { margin-bottom: 40px; }
        details { margin-bottom: 12px; background: var(--color-bg-surface); border: var(--glass-border); border-radius: var(--radius-md); }
        summary { padding: 16px; cursor: pointer; list-style: none; }
        summary h3 { margin: 0; font-size: 1.1rem; color: var(--color-text-primary); }
        .faq-answer { padding: 0 16px 16px; color: var(--color-text-secondary); font-size: 0.95rem; }
        .about-section {
            padding: 30px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            border: var(--glass-border);
            margin-bottom: 40px;
        }
        .team-card {
            margin-top: 30px;
            padding: 20px;
            background: var(--color-bg-elevated);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-accent);
        }
        .security-section {
            padding: 30px;
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            border: var(--glass-border);
            margin-bottom: 40px;
        }
        .rg-links {
            display: flex;
            gap: 15px;
            margin: 20px 0;
        }
        .rg-links a { color: var(--color-accent); text-decoration: underline; font-size: 0.9rem; }
        footer {
            border-top: 1px solid var(--color-border);
            padding: 40px 0 100px;
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 30px;
            text-align: left;
        }
        .footer-sitemap a { color: var(--color-text-secondary); text-decoration: none; font-size: 0.85rem; }
        .footer-contact { margin-bottom: 20px; color: var(--color-text-secondary); }
        .footer-contact a { color: var(--color-accent); text-decoration: none; }
        .footer-legal { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.8; }
        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--color-bg-surface);
            border-top: var(--glass-border);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: var(--color-text-secondary);
            font-size: 0.7rem;
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--color-accent); }
        .util-link { color: var(--color-accent); text-decoration: none; font-weight: 500; }
        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); }
            .navigator { position: static; 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); }
        }