:root {
            --color-primary: #0B2447;
            --color-primary-hover: #153B7A;
            --color-secondary: #C0C0C0;
            --color-secondary-hover: #E0E0E0;
            --color-accent: #00F5FF;
            --color-bg-main: #050C1A;
            --color-bg-surface: #0D182B;
            --color-bg-elevated: #16243D;
            --color-text-primary: #E6F1FF;
            --color-text-secondary: #B0C4DE;
            --color-text-muted: #647B9A;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050C1A;
            --color-btn-hover-bg: #70F9FF;
            --color-border: #1E2F4D;
            --color-border-strong: #2C426B;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 9999px;
            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.4);
            --grad-brand: linear-gradient(135deg, #0B2447 0%, #00F5FF 100%);
            --grad-hero: linear-gradient(180deg, #0D182B 0%, #050C1A 100%);
        }
        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(--color-bg-main);
            color: var(--color-text-primary);
            overflow-x: hidden;
        }
        h1, h2, h3 {
            font-family: 'Barlow Condensed', sans-serif;
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-top: 0;
        }
        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); margin-bottom: 1rem; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); margin-top: 2.5rem; margin-bottom: 1.25rem; color: var(--color-accent); }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); margin-bottom: 0.75rem; }
        a { color: var(--color-accent); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--color-btn-hover-bg); }
        img { max-width: 100%; height: auto; display: block; }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            border: none;
            text-align: center;
        }
        .btn-primary { background: var(--color-btn-bg); color: var(--color-btn-text); }
        .btn-primary:hover { background: var(--color-btn-hover-bg); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
        .btn-outline { background: transparent; border: 2px solid var(--color-accent); color: var(--color-accent); }
        .btn-outline:hover { background: var(--color-accent); color: var(--color-btn-text); }
        .btn-full { width: 100%; display: block; box-sizing: border-box; }
        
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 1rem;
            border-bottom: 1px solid var(--color-border);
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 10px; }

        .hero-section {
            padding-block: 2rem 0;
            background: var(--grad-hero);
            text-align: center;
        }
        .hero-intro { max-width: 800px; margin: 0 auto 2rem; padding-inline: 1rem; }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 1.5rem; }
        .hero-tag {
            background: var(--color-bg-elevated);
            color: var(--color-text-secondary);
            padding: 6px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            border: 1px solid var(--color-border-strong);
        }

        .banner-wrapper { display: block; width: 100%; overflow: hidden; }
        .banner-wrapper img { aspect-ratio: 2 / 1; width: 100%; object-fit: cover; }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 2rem 0;
        }
        .category-tile {
            background: var(--color-bg-surface);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border);
            transition: border-color 0.2s ease;
        }
        .category-tile:hover { border-color: var(--color-accent); }
        .category-tile i { font-size: 2rem; color: var(--color-accent); margin-bottom: 0.75rem; }
        .category-tile strong { display: block; font-size: 1.1rem; margin-bottom: 0.5rem; }
        .category-tile span { font-size: 0.85rem; color: var(--color-text-secondary); line-height: 1.4; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-block: 1.5rem 0;
        }
        .game-card {
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }
        .game-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); border-color: var(--color-accent); }
        .game-card img { aspect-ratio: 1 / 1; width: 100%; object-fit: cover; }
        .game-card h3 { padding: 12px; font-size: 1rem; text-align: center; margin: 0; color: var(--color-text-primary); }

        .facts-container { background: var(--color-bg-surface); border-radius: var(--radius-lg); padding: 1.5rem; margin-block: 1.5rem 0; border: 1px solid var(--color-border); }
        .freshness-notice { font-style: italic; color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 1rem; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table tr { border-bottom: 1px solid var(--color-border); }
        .facts-table td { padding: 12px 8px; font-size: 0.95rem; }
        .facts-label { color: var(--color-text-secondary); font-weight: 500; width: 40%; }
        .facts-value { color: var(--color-text-primary); }
        .terms-link { display: block; margin-top: 1rem; font-size: 0.85rem; color: var(--color-text-muted); text-align: center; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding-block: 1rem;
            scrollbar-width: none;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            margin-block: 2rem 0;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            background: var(--color-bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border-strong);
        }
        .toc-link:hover { background: var(--color-primary); color: var(--color-accent); }

        .promo-list { display: flex; flex-direction: column; gap: 20px; margin-block: 1.5rem 0; }
        .promo-card {
            background: var(--color-bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            border-left: 4px solid var(--color-accent);
            box-shadow: var(--shadow-card);
        }
        .promo-card h3 { margin-bottom: 0.75rem; }
        .promo-body { color: var(--color-text-secondary); margin-bottom: 1.5rem; font-size: 0.95rem; }

        .usp-grid { display: flex; flex-direction: column; gap: 15px; margin-block: 2rem 0; }
        .usp-tile {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            padding: 1.5rem;
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--color-accent); margin-top: 4px; }
        .usp-content strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--color-text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 1.5rem 0;
        }
        .payment-card {
            background: var(--color-bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border);
        }
        .payment-card i { font-size: 1.8rem; color: var(--color-accent); margin-bottom: 10px; display: block; }
        .payment-card strong { display: block; margin-bottom: 8px; font-size: 1rem; }
        .payment-card p { margin: 0; font-size: 0.8rem; color: var(--color-text-secondary); line-height: 1.4; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; margin-block: 1.5rem 0; }
        .guide-step {
            display: flex;
            gap: 15px;
            align-items: flex-start;
            background: var(--color-bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
        }
        .step-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: var(--color-bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .guide-step h3 { margin-bottom: 8px; color: var(--color-accent); }
        .guide-step a { color: inherit; }

        .download-box {
            background: var(--color-bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border);
            margin-block: 1.5rem 0;
        }
        .download-box p { margin-bottom: 1.5rem; color: var(--color-text-secondary); }

        .player-guides { display: flex; flex-direction: column; gap: 20px; margin-block: 1.5rem 0; }
        .guide-item {
            background: var(--color-bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
        }
        .guide-meta { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 1rem; display: block; }

        .announcement-list { display: flex; flex-direction: column; gap: 15px; margin-block: 1.5rem 0; }
        .announcement-card {
            background: var(--color-bg-surface);
            padding: 1.25rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            display: flex;
            gap: 15px;
        }
        .announcement-card i { color: var(--color-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-content h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .announcement-content p { font-size: 0.9rem; color: var(--color-text-secondary); margin-bottom: 8px; }
        .announcement-date { font-size: 0.8rem; color: var(--color-text-muted); }

        .faq-container { display: flex; flex-direction: column; gap: 12px; margin-block: 1.5rem 0; }
        .faq-item { background: var(--color-bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
        .faq-item summary { padding: 1rem; cursor: pointer; list-style: none; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; display: flex; align-items: center; gap: 10px; }
        .faq-item summary h3::after { content: '\f054'; font-family: 'Font Awesome 6 Free'; font-weight: 900; margin-left: auto; font-size: 0.9rem; }
        .faq-answer { padding: 0 1rem 1rem; color: var(--color-text-secondary); font-size: 0.95rem; }

        .about-section { background: var(--color-bg-surface); padding: 2rem; border-radius: var(--radius-lg); border: 1px solid var(--color-border); margin-block: 2rem 0; }
        .team-card {
            margin-top: 2rem;
            padding: 1.5rem;
            background: var(--color-bg-elevated);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-accent);
        }
        .team-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
        .team-card p { font-size: 0.9rem; color: var(--color-text-secondary); margin-bottom: 8px; }

        .security-section {
            background: var(--color-bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            margin-block: 2rem 0;
        }
        .security-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-block: 1.5rem 0; }
        .security-item { padding: 1rem; background: var(--color-bg-main); border-radius: var(--radius-md); border: 1px solid var(--color-border-strong); }
        .security-item i { color: var(--color-accent); margin-right: 8px; }

        footer {
            padding-block: 2rem 0;
            border-top: 1px solid var(--color-border);
            margin-top: 3rem;
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 2rem;
            text-align: center;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--color-text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.5; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--color-bg-surface);
            display: flex;
            justify-content: space-around;
            align-items: center;
            border-top: 1px solid var(--color-border);
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 0.75rem;
            text-decoration: none;
            flex: 1;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--color-accent); }

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

        section { content-visibility: auto; contain-intrinsic-size: 0 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); }
            .security-grid { grid-template-columns: repeat(2, 1fr); }
            .navigator { display: none; }
            footer { padding-bottom: 24px; }
        }
        @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); }
        }