:root {
            --brand-primary: #0D2B45;
            --brand-primary-hover: #163E63;
            --brand-secondary: #C0C0C8;
            --brand-secondary-hover: #E0E0E8;
            --brand-accent: #00F5FF;
            --bg-main: #050C16;
            --bg-surface: #0B1624;
            --bg-elevated: #122135;
            --bg-overlay: rgba(5, 12, 22, 0.8);
            --text-primary: #E6EEF5;
            --text-secondary: #AAB8C8;
            --text-muted: #6B7D91;
            --text-brand-contrast: #050C16;
            --text-link: #00F5FF;
            --text-link-hover: #80FFFF;
            --btn-bg: #00F5FF;
            --btn-text: #050C16;
            --btn-hover-bg: #80FFFF;
            --btn-hover-text: #050C16;
            --semantic-success: #00E676;
            --semantic-error: #FF5252;
            --semantic-warning: #FFD740;
            --semantic-info: #40C4FF;
            --border-default: #1C2E46;
            --border-strong: #2D4566;
            --border-brand: #00F5FF;
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --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, #0D2B45 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at top right, #163E63 0%, #050C16 100%);
            --grad-btn: linear-gradient(180deg, #00F5FF 0%, #00D1DD 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));
            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; }
        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: transform 0.2s, background 0.2s;
            border: none;
            text-align: center;
        }
        .btn-primary { background: var(--grad-btn); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); }
        .btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border-brand); }
        .btn-secondary:hover { background: var(--border-strong); }
        .btn-block { width: 100%; display: flex; }

        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; color: var(--text-primary); }
        h2 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2rem; margin-bottom: 1rem; color: var(--text-primary); }
        h3 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin: 0 0 0.5rem 0; color: var(--text-primary); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 1rem;
            border-bottom: 1px solid var(--border-default);
            background: var(--bg-surface);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-logo { display: flex; align-items: center; gap: 8px; }
        .header-logo strong { font-size: 16px; font-weight: 400; color: var(--text-primary); }
        .header-nav { display: flex; gap: 12px; }

        main { padding-top: 1rem; }
        .hero-section {
            background: var(--grad-hero);
            padding: 2rem 1rem;
            text-align: center;
            border-radius: var(--radius-lg);
            margin-bottom: 2rem;
        }
        .hero-intro { max-width: 800px; margin: 0 auto 1.5rem auto; color: var(--text-secondary); }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 1.5rem; }
        .tag-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: 0.875rem;
        }

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

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-block: 2rem 0;
        }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-md);
            text-align: center;
            transition: background 0.3s, border-color 0.3s;
        }
        .cat-tile:hover { background: var(--bg-elevated); border-color: var(--brand-accent); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 10px; display: block; }
        .cat-tile strong { display: block; margin-bottom: 5px; font-size: 1.1rem; }
        .cat-tile span { font-size: 0.875rem; color: var(--text-muted); line-height: 1.4; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-block: 1.5rem 0;
        }
        .game-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.2s;
        }
        .game-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card-body { padding: 12px; text-align: center; }
        .game-card-body h3 { font-size: 1rem; margin: 0; }

        .facts-container { background: var(--bg-surface); border-radius: var(--radius-md); padding: 1.5rem; border: 1px solid var(--border-default); margin-block: 2rem 0; }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.875rem; margin-bottom: 1rem; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); font-size: 0.9rem; }
        .facts-table td:first-child { color: var(--text-secondary); font-weight: 500; width: 40%; }
        .facts-table td:last-child { color: var(--text-primary); text-align: right; }
        .facts-footer { margin-top: 1rem; text-align: center; font-size: 0.875rem; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding-block: 1rem;
            scrollbar-width: none;
            border-top: 1px solid var(--border-default);
            border-bottom: 1px solid var(--border-default);
            margin-block: 2rem 0;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.875rem;
            border: 1px solid var(--border-default);
        }
        .toc-link:hover { color: var(--brand-accent); border-color: var(--brand-accent); }

        .promo-grid { display: flex; flex-direction: column; gap: 16px; margin-block: 1.5rem 0; }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
        }
        .promo-card::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--brand-accent); }

        .usp-grid { display: flex; flex-direction: column; gap: 16px; margin-block: 2rem 0; }
        .usp-tile {
            background: var(--bg-elevated);
            border: 1px solid var(--border-default);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); margin-top: 4px; }
        .usp-content strong { display: block; margin-bottom: 4px; font-size: 1.1rem; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .step-list { display: flex; flex-direction: column; gap: 20px; margin-block: 1.5rem 0; }
        .step-item { display: flex; gap: 16px; align-items: flex-start; background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .step-num {
            min-width: 36px;
            height: 36px;
            background: var(--brand-accent);
            color: var(--btn-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }
        .step-body h3 { margin-bottom: 8px; }
        .step-body a { color: inherit; text-decoration: none; }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-block: 1.5rem 0; }
        .pay-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.25rem;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .pay-card i { font-size: 1.75rem; color: var(--brand-accent); margin-bottom: 12px; display: block; }
        .pay-card strong { display: block; margin-bottom: 8px; font-size: 1rem; }
        .pay-card p { margin: 0; font-size: 0.875rem; color: var(--text-secondary); line-height: 1.4; }

        .guide-item { background: var(--bg-surface); border: 1px solid var(--border-default); padding: 1.5rem; border-radius: var(--radius-md); margin-block: 1rem 0; }
        .guide-meta { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 10px; display: block; }

        .announcement-grid { display: flex; flex-direction: column; gap: 16px; margin-block: 1.5rem 0; }
        .announcement-card { background: var(--bg-surface); border: 1px solid var(--border-default); padding: 1.25rem; border-radius: var(--radius-md); }
        .announcement-header { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; }
        .announcement-header i { color: var(--brand-accent); }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 10px; }

        .faq-item { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius-md); margin-block: 0.75rem 0; }
        .faq-item summary { padding: 1rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item .faq-answer { padding: 0 1rem 1rem 1rem; color: var(--text-secondary); border-top: 1px solid var(--border-default); padding-top: 1rem; }

        .trust-card { background: var(--bg-elevated); border: 1px solid var(--border-brand); padding: 1.5rem; border-radius: var(--radius-md); margin-top: 2rem; }

        footer {
            background: var(--bg-surface);
            padding: 2rem 1rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 2rem;
            text-align: left;
        }
        .footer-sitemap a { font-size: 0.875rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-default);
            display: flex;
            justify-content: space-around;
            padding-block: 8px;
            padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.7rem;
            text-decoration: none;
            flex: 1;
        }
        .nav-item i { font-size: 1.2rem; margin-bottom: 4px; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link { display: block; text-align: center; margin-top: 1rem; color: var(--brand-accent); 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); }
            .promo-grid { flex-direction: row; }
            .promo-card { flex: 1; }
            .usp-grid { flex-direction: row; }
            .usp-tile { flex: 1; }
            .step-list { flex-direction: row; }
            .step-item { flex: 1; }
            .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); }
        }