:root {
            --brand-primary: #0D2A4A;
            --brand-primary-hover: #163B63;
            --brand-secondary: #C0C0C8;
            --brand-accent: #00F5FF;
            --bg-main: #050D1A;
            --bg-surface: #0A162B;
            --bg-elevated: #11223E;
            --text-primary: #E6EEF5;
            --text-secondary: #B0C4DE;
            --text-muted: #78909C;
            --btn-bg: #00F5FF;
            --btn-text: #050D1A;
            --btn-hover-bg: #70F9FF;
            --border-default: #1C2E4A;
            --border-brand: #00F5FF66;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
        }

        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(--bg-main);
            color: var(--text-primary);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--brand-accent); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #70F9FF; }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-default);
        }
        .header-brand { display: flex; align-items: center; gap: 10px; }
        .header-brand strong { font-size: 16px; font-weight: normal; }
        .header-actions { display: flex; gap: 12px; }

        .btn-nav {
            background: var(--bg-elevated);
            color: var(--text-primary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-default);
            font-size: 14px;
            font-weight: 500;
        }
        .btn-nav-primary {
            background: var(--btn-bg);
            color: var(--btn-text);
            border-color: var(--btn-bg);
        }

        main { width: 100%; }

        .hero-section {
            padding: 40px 0;
            text-align: center;
            background: radial-gradient(circle at top right, #11223E 0%, #050D1A 100%);
        }
        .hero-section h1 {
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .hero-intro {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 800px;
            margin: 0 auto 30px;
        }
        .hero-cta {
            display: block;
            width: 100%;
            background: linear-gradient(180deg, #00F5FF 0%, #00D1D9 100%);
            color: var(--btn-text);
            text-align: center;
            padding: 16px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.2rem;
            box-shadow: 0 0 20px rgba(0, 245, 255, 0.4);
            margin-bottom: 24px;
        }
        .hero-tags {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-tag {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--border-brand);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 13px;
        }

        .banner-link img {
            width: 100%;
            aspect-ratio: 2/1;
            object-fit: cover;
            border-radius: 0;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin: 32px 0;
        }
        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(10px);
        }
        .category-tile i { font-size: 2rem; color: var(--brand-accent); }
        .category-tile strong { display: block; font-size: 1.1rem; color: var(--text-primary); }
        .category-tile span { font-size: 13px; color: var(--text-secondary); }

        .game-section {
            margin: 40px 0;
            content-visibility: auto;
            contain-intrinsic-size: 500px;
        }
        .game-section h2 {
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            margin-bottom: 24px;
            color: var(--text-primary);
        }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            overflow: hidden;
            transition: transform 0.3s ease;
        }
        .game-card:hover { transform: translateY(-5px); border-color: var(--border-brand); }
        .game-card img { aspect-ratio: 1/1; object-fit: cover; width: 100%; }
        .game-card h3 {
            font-size: 1rem;
            padding: 12px;
            margin: 0;
            text-align: center;
            color: var(--text-primary);
        }

        .facts-section {
            background: var(--bg-surface);
            padding: 30px 20px;
            border-radius: var(--radius-lg);
            margin: 40px 0;
            border: 1px solid var(--border-default);
        }
        .freshness-notice {
            font-style: italic;
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
            display: block;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
        }
        .facts-table tr { border-bottom: 1px solid var(--border-default); }
        .facts-table td { padding: 12px 0; color: var(--text-secondary); }
        .facts-table td:first-child { font-weight: 600; color: var(--text-primary); width: 40%; }
        .terms-link {
            display: block;
            margin-top: 15px;
            font-size: 13px;
            color: var(--text-muted);
            text-align: center;
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 10px 0;
            margin: 20px 0;
            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: 14px;
            border: 1px solid var(--border-default);
            color: var(--text-secondary);
        }

        .promo-grid { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 24px;
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
        }
        .promo-card h3 { margin-top: 0; color: var(--brand-accent); }
        .promo-card p { color: var(--text-secondary); margin-bottom: 20px; }
        .promo-btn {
            display: inline-block;
            background: var(--btn-bg);
            color: var(--btn-text);
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        .usp-bar {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin: 40px 0;
        }
        .usp-tile {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); }
        .usp-tile strong { display: block; color: var(--text-primary); margin-bottom: 5px; }
        .usp-tile span { font-size: 14px; color: var(--text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .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: 2rem; color: var(--brand-accent); margin-bottom: 10px; }
        .payment-card strong { display: block; margin-bottom: 8px; color: var(--text-primary); }
        .payment-card p { font-size: 13px; color: var(--text-secondary); margin: 0; }

        .guide-list { display: flex; flex-direction: column; gap: 20px; }
        .guide-step {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .step-num {
            width: 40px;
            height: 40px;
            background: var(--brand-accent);
            color: var(--btn-text);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }
        .guide-step h3 { margin: 0 0 10px 0; font-size: 1.2rem; }
        .guide-step a { color: inherit; }

        .download-section {
            background: var(--bg-surface);
            padding: 30px 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-brand);
        }
        .download-btn {
            display: block;
            width: 100%;
            max-width: 300px;
            margin: 20px auto;
            background: var(--btn-bg);
            color: var(--btn-text);
            padding: 16px;
            border-radius: var(--radius-md);
            font-weight: 700;
        }

        .player-guides { display: flex; flex-direction: column; gap: 20px; }
        .guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .guide-item .meta { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 10px; }

        .announcement-list { display: flex; flex-direction: column; gap: 16px; }
        .announcement-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-accent);
            display: flex;
            gap: 15px;
        }
        .announcement-item i { color: var(--brand-accent); margin-top: 5px; }
        .announcement-content h3 { margin: 0 0 8px 0; font-size: 1.1rem; }
        .announcement-date { font-size: 12px; color: var(--text-muted); display: block; margin-top: 10px; }

        .faq-section details {
            background: var(--bg-surface);
            margin-bottom: 12px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .faq-section summary {
            padding: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-section summary h3 { margin: 0; font-size: 1.1rem; color: var(--text-primary); }
        .faq-section p { padding: 0 16px 16px; color: var(--text-secondary); margin: 0; }

        .about-section {
            background: var(--bg-surface);
            padding: 30px 20px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .team-card {
            margin-top: 30px;
            padding: 20px;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-brand);
        }

        .security-section {
            margin: 40px 0;
            padding: 30px 20px;
            background: linear-gradient(135deg, #0D2A4A 0%, #050D1A 100%);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-default);
        }
        .security-links { display: flex; gap: 15px; flex-wrap: wrap; margin: 20px 0; }
        .security-link {
            background: rgba(255,255,255,0.05);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            border: 1px solid var(--border-default);
        }

        footer {
            margin-top: 60px;
            padding: 40px 0;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 30px;
        }
        .footer-sitemap a { color: var(--text-secondary); font-size: 14px; }
        .footer-contact { margin-bottom: 20px; color: var(--text-secondary); }
        .footer-legal { font-size: 13px; color: var(--text-muted); line-height: 1.8; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: rgba(10, 22, 43, 0.9);
            backdrop-filter: blur(15px);
            display: flex;
            justify-content: space-around;
            padding: 12px 0 calc(12px + env(safe-area-inset-bottom, 0px));
            border-top: 1px solid var(--border-brand);
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-secondary);
            font-size: 11px;
        }
        .nav-item i { font-size: 1.2rem; }

        @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); }
            .usp-bar { grid-template-columns: repeat(2, 1fr); }
            .navigator { display: none; }
        }

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