:root {
            --brand-primary: #1A3A5F;
            --brand-primary-hover: #254D7A;
            --brand-secondary: #C0C0C8;
            --brand-secondary-hover: #E0E0E8;
            --brand-accent: #00F5FF;
            --bg-main: #050A14;
            --bg-surface: #0C1425;
            --bg-elevated: #152036;
            --bg-overlay: rgba(5, 10, 20, 0.8);
            --text-primary: #E6F1FF;
            --text-secondary: #AAB8D1;
            --text-muted: #7284A5;
            --text-contrast: #050A14;
            --text-link: #00F5FF;
            --text-link-hover: #70F8FF;
            --btn-bg: #00F5FF;
            --btn-text: #050A14;
            --btn-hover-bg: #70F8FF;
            --border-default: #1E2D4A;
            --border-strong: #2C3E61;
            --border-brand: rgba(0, 245, 255, 0.4);
            --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);
            --glow-accent: 0 0 15px rgba(0, 245, 255, 0.6);
            --grad-brand: linear-gradient(135deg, #1A3A5F 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at top right, #152036 0%, #050A14 100%);
            --grad-btn: linear-gradient(180deg, #00F5FF 0%, #00C2D1 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 ease; }
        a:hover { color: var(--text-link-hover); }

        .btn, .cta-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-pill);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-align: center;
        }
        .btn-primary {
            background: var(--grad-btn);
            color: var(--text-contrast);
            box-shadow: var(--glow-accent);
        }
        .btn-primary:hover { background: var(--btn-hover-bg); transform: translateY(-2px); }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-brand);
        }
        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(5, 10, 20, 0.8);
            backdrop-filter: blur(10px);
        }
        .header-logo-link { display: flex; align-items: center; gap: 10px; }
        .header-logo-link strong { font-size: 16px; font-weight: 400; color: var(--text-primary); }
        .header-actions { display: flex; gap: 12px; }

        main { width: 100%; }
        section {
            padding: 40px 0;
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
        }

        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 1.5rem; color: var(--text-primary); }
        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); }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 1rem; color: var(--text-primary); }

        .hero-section {
            background: var(--grad-hero);
            padding: 60px 0;
            text-align: center;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }
        .hero-intro-text { max-width: 700px; margin: 0 auto 2rem; color: var(--text-secondary); }
        .hero-cta-full { display: block; width: 100%; max-width: 400px; margin: 0 auto; }
        .hero-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 2rem; }
        .tag-pill {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--border-brand);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.875rem;
            color: var(--brand-accent);
        }

        .banner-link { display: block; width: 100%; margin: 20px 0; overflow: hidden; border-radius: var(--radius-md); }
        .banner-img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; }

        .cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .cat-tile:hover { border-color: var(--brand-accent); background: var(--bg-elevated); transform: translateY(-5px); }
        .cat-tile i { font-size: 2rem; color: var(--brand-accent); }
        .cat-tile strong { display: block; margin-bottom: 5px; color: var(--text-primary); }
        .cat-tile span { font-size: 0.875rem; color: var(--text-muted); }

        .game-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .game-card:hover { border-color: var(--brand-accent); transform: scale(1.03); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 { font-size: 0.9rem; padding: 12px; margin: 0; text-align: center; color: var(--text-primary); }

        .facts-container { background: var(--bg-surface); border-radius: var(--radius-md); padding: 20px; border: 1px solid var(--border-default); }
        .freshness-notice { font-style: italic; color: var(--text-muted); font-size: 0.875rem; 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 8px; font-size: 0.9rem; }
        .facts-label { color: var(--text-secondary); font-weight: 500; width: 40%; }
        .facts-value { color: var(--text-primary); text-align: right; }
        .terms-link { display: block; text-align: center; margin-top: 15px; font-size: 0.875rem; color: var(--text-muted); }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 10px 0;
            scrollbar-width: none;
            border-bottom: 1px solid var(--border-default);
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            padding: 8px 16px;
            background: var(--bg-surface);
            border-radius: var(--radius-pill);
            font-size: 0.875rem;
            border: 1px solid var(--border-default);
        }
        .toc-link:hover { background: var(--border-strong); }

        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .promo-card h3 { margin: 0; color: var(--brand-accent); }

        .usp-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
        .usp-tile {
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            align-items: flex-start;
            border-left: 4px solid var(--brand-accent);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--brand-accent); margin-top: 4px; }
        .usp-content strong { display: block; font-size: 1.1rem; margin-bottom: 5px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .payment-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
        .payment-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 15px;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .payment-card i { font-size: 1.8rem; color: var(--brand-accent); margin-bottom: 10px; }
        .payment-card strong { display: block; font-size: 0.9rem; margin-bottom: 8px; }
        .payment-card p { margin: 0; font-size: 0.75rem; color: var(--text-muted); }

        .guide-steps { display: grid; grid-template-columns: 1fr; gap: 20px; }
        .step-card {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .step-badge {
            min-width: 32px;
            height: 32px;
            background: var(--brand-accent);
            color: var(--text-contrast);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .step-content h3 { margin: 0 0 10px 0; }
        .step-content h3 a { color: inherit; }

        .download-section {
            background: var(--bg-elevated);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
        }

        .player-guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-bottom: 15px;
            border: 1px solid var(--border-default);
        }
        .guide-meta { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 10px; }

        .announcement-item {
            display: flex;
            gap: 15px;
            padding: 15px 0;
            border-bottom: 1px solid var(--border-default);
        }
        .announcement-item i { color: var(--brand-accent); margin-top: 5px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 5px; }

        .faq-item { margin-bottom: 15px; background: var(--bg-surface); border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        .faq-item summary { padding: 15px; cursor: pointer; list-style: none; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary h3 { margin: 0; font-size: 1rem; }
        .faq-answer { padding: 0 15px 15px; color: var(--text-secondary); font-size: 0.9rem; }

        .about-card {
            background: var(--bg-surface);
            padding: 25px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .team-card {
            margin-top: 20px;
            padding: 20px;
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-brand);
        }

        footer {
            padding: 40px 0 100px;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            max-width: 600px;
            margin: 0 auto 30px;
            text-align: left;
        }
        .footer-sitemap a { font-size: 0.875rem; color: var(--text-secondary); }
        .footer-contact { margin-bottom: 20px; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); line-height: 1.4; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--bg-surface);
            backdrop-filter: blur(15px);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            border-top: 1px solid var(--border-default);
            z-index: 2000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            color: var(--text-secondary);
            font-size: 0.7rem;
            text-decoration: none;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        .utility-link {
            display: inline-block;
            margin-top: 10px;
            font-weight: 600;
            color: var(--brand-accent);
        }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .cat-grid { grid-template-columns: repeat(3, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .usp-grid { grid-template-columns: repeat(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .guide-steps { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
        }

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