:root {
            --brand-primary: #1E3A8A;
            --brand-primary-hover: #2563EB;
            --brand-secondary: #C0C0C0;
            --brand-secondary-hover: #E5E7EB;
            --brand-accent: #00F5FF;
            --bg-main: #050B1A;
            --bg-surface: #0D162B;
            --bg-elevated: #16223D;
            --bg-overlay: rgba(5, 11, 26, 0.75);
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-brand-contrast: #050B1A;
            --text-link: #00F5FF;
            --text-link-hover: #7DD3C7;
            --btn-bg: #00F5FF;
            --btn-text: #050B1A;
            --btn-hover-bg: #7DD3C7;
            --btn-hover-text: #050B1A;
            --sem-success: #10B981;
            --sem-error: #EF4444;
            --sem-warning: #F59E0B;
            --sem-info: #3B82F6;
            --border-default: #1E293B;
            --border-strong: #334155;
            --border-brand: #00F5FF;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --shadow-elevated: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.4);
            --grad-brand: linear-gradient(135deg, #1E3A8A 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at center, #16223D 0%, #050B1A 100%);
            --grad-btn: linear-gradient(to right, #00F5FF, #7DD3C7);
        }

        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);
        }
        img, video, iframe { 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, .cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 18px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-align: center;
        }
        .cta-primary {
            background: var(--grad-btn);
            color: var(--btn-text);
            box-shadow: var(--shadow-glow);
        }
        .cta-primary:hover {
            background: var(--btn-hover-bg);
            transform: translateY(-2px);
        }
        .cta-secondary {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border: 1px solid var(--border-brand);
        }
        .cta-secondary:hover {
            background: var(--border-strong);
        }
        h1 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin: 0 0 1rem 0; font-weight: 700; color: #fff; }
        h2 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2.5rem; margin-bottom: 1.25rem; font-weight: 700; color: var(--brand-accent); }
        h3 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin: 0 0 0.75rem 0; font-weight: 600; color: var(--text-primary); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-default);
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; color: var(--text-primary); }
        .header-actions { display: flex; gap: 10px; }

        main { width: 100%; }
        .hero-section {
            text-align: center;
            padding: 3rem 0;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            margin-bottom: 2rem;
        }
        .hero-intro { max-width: 800px; margin: 0 auto 2rem auto; padding: 0 1rem; color: var(--text-secondary); }
        .hero-cta { display: block; width: 100%; max-width: 400px; margin: 0 auto; font-size: 1.1rem; }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin-top: 2rem;
        }
        .hero-pill {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
        }

        .banner-wrapper { display: block; width: 100%; margin-bottom: 2rem; }
        .banner-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: 12px;
            margin-bottom: 2rem;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-md);
            text-align: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }
        .category-tile:hover { border-color: var(--brand-accent); transform: translateY(-3px); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 0.75rem; }
        .category-tile strong { display: block; margin-bottom: 0.5rem; font-size: 1rem; color: #fff; }
        .category-tile span { font-size: 0.85rem; color: var(--text-secondary); display: block; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 2rem;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--brand-accent); }
        .game-img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-info { padding: 12px; text-align: center; }
        .game-info h3 { font-size: 0.95rem; margin: 0; color: var(--text-primary); }

        .facts-container {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border-default);
            margin-bottom: 2rem;
        }
        .freshness-notice { font-style: italic; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; 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; font-size: 0.9rem; }
        .facts-label { color: var(--text-secondary); width: 40%; }
        .facts-value { color: #fff; font-weight: 500; }
        .facts-footer { margin-top: 1rem; font-size: 0.8rem; text-align: center; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 1rem 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            white-space: nowrap;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            border: 1px solid var(--border-default);
        }

        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }
        .promo-card:hover { border-color: var(--brand-accent); box-shadow: var(--shadow-card); }
        .promo-card h3 { color: #fff; }
        .promo-card p { color: var(--text-secondary); margin-bottom: 1.5rem; }

        .usp-grid { display: grid; gap: 16px; margin-bottom: 2rem; }
        .usp-tile {
            background: var(--bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-accent);
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); }
        .usp-content strong { display: block; font-size: 1rem; color: #fff; }
        .usp-content span { font-size: 0.85rem; color: var(--text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 2rem;
        }
        .payment-card {
            background: var(--bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 1.75rem; color: var(--brand-accent); margin-bottom: 0.75rem; }
        .payment-card strong { display: block; margin-bottom: 0.5rem; color: #fff; }
        .payment-card p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; }

        .guide-list { display: grid; gap: 16px; margin-bottom: 2rem; }
        .guide-item {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.75rem; color: var(--text-muted); display: block; margin-bottom: 0.75rem; }

        .steps-grid { display: grid; gap: 20px; margin-bottom: 2rem; }
        .step-item {
            display: flex;
            gap: 16px;
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .step-num {
            min-width: 40px;
            height: 40px;
            background: var(--grad-brand);
            color: var(--btn-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-content h3 { margin: 0 0 0.5rem 0; }
        .step-content a { color: inherit; text-decoration: none; }

        .download-box {
            background: var(--bg-elevated);
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-brand);
            margin-bottom: 2rem;
        }

        .announcement-list { display: grid; gap: 16px; margin-bottom: 2rem; }
        .announcement-card {
            background: var(--bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            display: flex;
            gap: 16px;
        }
        .announcement-card i { color: var(--brand-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-info h3 { font-size: 1rem; margin: 0 0 0.5rem 0; }
        .announcement-info p { font-size: 0.85rem; color: var(--text-secondary); margin: 0 0 0.5rem 0; }
        .announcement-date { font-size: 0.75rem; color: var(--text-muted); }

        .faq-container { display: grid; gap: 12px; margin-bottom: 2rem; }
        .faq-item { background: var(--bg-surface); border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .faq-item summary { padding: 1rem; cursor: pointer; outline: none; list-style: none; }
        .faq-item summary h3 { margin: 0; font-size: 1rem; display: flex; align-items: center; gap: 10px; }
        .faq-item summary h3::before { content: '\f054'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--brand-accent); }
        .faq-answer { padding: 0 1rem 1rem 1rem; font-size: 0.9rem; color: var(--text-secondary); }

        .about-box {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
            margin-bottom: 2rem;
        }
        .team-card {
            margin-top: 2rem;
            padding: 1.5rem;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
        }

        .security-section {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .security-grid { display: grid; gap: 16px; margin-bottom: 1.5rem; }
        .security-item { display: flex; gap: 12px; align-items: flex-start; font-size: 0.9rem; }
        .security-item i { color: var(--sem-success); margin-top: 4px; }

        footer {
            background: var(--bg-surface);
            padding: 2rem 0;
            margin-top: 3rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 800px;
            margin: 0 auto 2rem auto;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; }
        .footer-legal { font-size: 0.75rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

        .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, 0px);
            z-index: 1000;
            backdrop-filter: blur(15px);
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 0.7rem;
            gap: 4px;
            flex: 1;
        }
        .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; }

        @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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { position: static; height: auto; padding: 0; border: none; display: none; }
            .hero-section { padding: 5rem 0; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(7, 1fr); }
        }

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