:root {
            --brand-primary: #1E40AF;
            --brand-primary-hover: #2563EB;
            --brand-secondary: #94A3B8;
            --brand-secondary-hover: #CBD5E1;
            --brand-accent: #06B6D4;
            --bg-main: #080C16;
            --bg-surface: #0F172A;
            --bg-elevated: #1E293B;
            --bg-overlay: rgba(8, 12, 22, 0.8);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-brand-contrast: #080C16;
            --text-link: #38BDF8;
            --text-link-hover: #7DD3FC;
            --btn-bg: #06B6D4;
            --btn-text: #080C16;
            --btn-hover-bg: #22D3EE;
            --border-default: #1E293B;
            --border-strong: #334155;
            --border-brand: #06B6D4;
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --grad-brand: linear-gradient(135deg, #1E40AF 0%, #06B6D4 100%);
            --grad-hero: radial-gradient(circle at center, #1E293B 0%, #080C16 100%);
            --grad-btn: linear-gradient(to right, #06B6D4, #22D3EE);
        }

        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;
            background-color: var(--bg-main);
            color: var(--text-primary);
            padding-inline: 14px;
            padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
            overflow-x: hidden;
        }

        img { 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(--text-brand-contrast);
        }
        .btn-primary:hover {
            background: var(--btn-hover-bg);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-brand);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            background: rgba(6, 182, 212, 0.1);
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 12px; }

        main { width: 100%; }

        .hero-section {
            padding: 40px 0;
            text-align: center;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            margin-bottom: 24px;
        }
        h1 {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-text {
            max-width: 700px;
            margin: 0 auto 30px;
            color: var(--text-secondary);
        }
        .hero-cta { width: 100%; max-width: 400px; margin: 0 auto; display: block; }
        .hero-tags {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .tag-pill {
            background: var(--bg-elevated);
            border: 1px solid var(--border-strong);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .banner-link { display: block; width: 100%; margin-bottom: 24px; }
        .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: 16px;
            margin-bottom: 32px;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: border-color 0.3s;
        }
        .category-tile:hover { border-color: var(--brand-accent); }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); margin-bottom: 12px; }
        .category-tile span { display: block; font-weight: 600; margin-bottom: 8px; }
        .category-tile p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.2s;
        }
        .game-card:hover { transform: scale(1.03); }
        .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-section {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 32px;
            border: 1px solid var(--border-strong);
        }
        .freshness-notice {
            font-style: italic;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 16px;
        }
        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--border-default);
        }
        .facts-label { font-weight: 600; color: var(--text-secondary); width: 40%; }
        .facts-value { color: var(--text-primary); }
        .terms-hint {
            font-size: 0.85rem;
            text-align: center;
            color: var(--text-muted);
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 12px 0;
            margin-bottom: 32px;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--border-strong);
        }

        h2 {
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 2rem;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }

        .promo-container { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-brand);
            padding: 24px;
            border-radius: var(--radius-md);
            position: relative;
        }
        .promo-card h3 { margin-top: 0; color: var(--brand-accent); }

        .usp-bar { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
        .usp-tile {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-accent);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); }
        .usp-content strong { display: block; margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }
        .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: 1.8rem; color: var(--text-link); margin-bottom: 12px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .guide-step {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .step-num {
            background: var(--grad-brand);
            min-width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--text-brand-contrast);
        }
        .guide-step h3 { margin: 0 0 8px; font-size: 1.1rem; }
        .guide-step h3 a { color: inherit; }

        .download-section {
            background: var(--bg-elevated);
            padding: 32px 24px;
            border-radius: var(--radius-md);
            text-align: center;
            margin-bottom: 32px;
        }

        .player-guides { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; display: block; }

        .announcements { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
        .announcement-item {
            background: var(--bg-surface);
            padding: 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            display: flex;
            gap: 16px;
        }
        .announcement-item i { color: var(--brand-accent); margin-top: 4px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 8px; }

        .faq-section { margin-bottom: 32px; }
        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            margin-bottom: 12px;
            border-radius: var(--radius-md);
        }
        .faq-item summary { padding: 16px; cursor: pointer; list-style: none; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; color: var(--text-primary); }
        .faq-answer { padding: 0 16px 16px; color: var(--text-secondary); font-size: 0.95rem; }

        .about-section {
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            border: 1px solid var(--border-strong);
        }
        .team-card {
            margin-top: 24px;
            padding: 20px;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-brand);
        }

        .security-section {
            background: var(--bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            border: 1px solid var(--border-default);
        }
        .security-links { display: flex; gap: 16px; flex-wrap: wrap; margin: 16px 0; }
        .security-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            border: 1px solid var(--border-strong);
        }

        footer {
            background: var(--bg-surface);
            padding: 40px 0 24px;
            border-top: 1px solid var(--border-strong);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 32px;
            text-align: left;
        }
        .footer-sitemap a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-contact { margin-bottom: 24px; color: var(--text-secondary); }
        .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-strong);
            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-secondary);
            font-size: 0.75rem;
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        .util-link { display: inline-block; margin-top: 10px; 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); }
            .navigator { display: none; }
            .header-actions .btn { padding: 8px 20px; }
        }

        @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); }
        }