:root {
            --primary: #1A3A5F;
            --primary-hover: #254E7D;
            --secondary: #C0C0C0;
            --secondary-hover: #E0E0E0;
            --accent: #00F5FF;
            --bg-main: #050B14;
            --bg-surface: #0D1624;
            --bg-elevated: #162235;
            --text-primary: #E6F1FF;
            --text-secondary: #AAB8C8;
            --text-muted: #6E8094;
            --text-link: #00F5FF;
            --text-link-hover: #B2FFFF;
            --btn-bg: #00F5FF;
            --btn-text: #050B14;
            --btn-hover-bg: #66FFFF;
            --border-default: #1C2D44;
            --border-strong: #2D4263;
            --border-brand: rgba(0, 245, 255, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --grad-brand: linear-gradient(135deg, #1A3A5F 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at top right, #162235 0%, #050B14 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;
            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); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 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-nav { display: flex; gap: 12px; }

        .btn-base {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            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-outline { border: 1px solid var(--border-brand); color: var(--text-primary); background: transparent; }
        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }

        main { width: 100%; }

        .hero-section {
            text-align: center;
            padding: 3rem 0;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            margin-bottom: 2rem;
        }
        h1 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }
        .hero-text {
            max-width: 800px;
            margin: 0 auto 2rem;
            color: var(--text-secondary);
            padding-inline: 1rem;
        }
        .hero-cta { display: block; width: 100%; max-width: 400px; margin: 0 auto 2rem; }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .tag-pill {
            background: var(--bg-elevated);
            border: 1px solid var(--border-brand);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

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

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 3rem;
        }
        .cat-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;
        }
        .cat-tile:hover { border-color: var(--accent); }
        .cat-tile i { font-size: 2rem; color: var(--accent); margin-bottom: 12px; }
        .cat-tile strong { display: block; margin-bottom: 8px; color: var(--text-primary); }
        .cat-tile span { font-size: 0.85rem; color: var(--text-muted); }

        h2 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 3rem;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            text-align: center;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 3rem;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.3s;
        }
        .game-card:hover { transform: translateY(-5px); border-color: var(--border-strong); }
        .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-container {
            background: var(--bg-surface);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 3rem;
        }
        .freshness-notice {
            display: block;
            text-align: center;
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.85rem;
            margin-bottom: 1.5rem;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1rem;
        }
        .facts-table tr { border-bottom: 1px solid var(--border-default); }
        .facts-table td { padding: 12px 8px; 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 { text-align: center; font-size: 0.85rem; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 1rem 0;
            margin-bottom: 2rem;
            scrollbar-width: none;
            -ms-overflow-style: 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: 0.85rem;
            border: 1px solid var(--border-default);
        }

        .promo-grid { display: flex; flex-direction: column; gap: 20px; margin-bottom: 3rem; }
        .promo-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-strong);
            padding: 24px;
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .promo-card h3 { margin: 0; color: var(--accent); }

        .usp-bar {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-bottom: 3rem;
        }
        .usp-tile {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            align-items: flex-start;
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--accent); margin-top: 4px; }
        .usp-title { display: block; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .usp-desc { font-size: 0.85rem; color: var(--text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 3rem;
        }
        .payment-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 2rem; color: var(--text-primary); margin-bottom: 12px; }
        .payment-card strong { display: block; margin-bottom: 8px; font-size: 0.9rem; }
        .payment-card p { font-size: 0.75rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 24px; margin-bottom: 3rem; }
        .guide-step {
            display: flex;
            gap: 20px;
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: flex-start;
        }
        .step-num {
            background: var(--grad-brand);
            color: var(--btn-text);
            min-width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h3 { margin: 0 0 8px; font-size: 1.1rem; }
        .step-content p { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }

        .mobile-section {
            background: var(--bg-elevated);
            padding: 32px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-bottom: 3rem;
        }
        .mobile-section p { margin-bottom: 2rem; color: var(--text-secondary); }

        .player-guide { margin-bottom: 3rem; }
        .guide-item {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            border-left: 4px solid var(--accent);
        }
        .guide-meta { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 8px; display: block; }

        .announcement-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-bottom: 3rem;
        }
        .announcement-card {
            background: var(--bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
        }
        .announcement-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
        .announcement-header i { color: var(--accent); }
        .announcement-date { display: block; font-size: 0.75rem; color: var(--text-muted); margin-top: 12px; }

        .faq-section { margin-bottom: 3rem; }
        details { background: var(--bg-surface); margin-bottom: 12px; border-radius: var(--radius-md); border: 1px solid var(--border-default); }
        summary { padding: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        summary h3 { margin: 0; font-size: 1rem; color: var(--text-primary); }
        .faq-answer { padding: 0 16px 16px; color: var(--text-secondary); font-size: 0.9rem; }

        .about-section {
            background: var(--bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            margin-bottom: 3rem;
        }
        .team-card {
            background: var(--bg-elevated);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-top: 2rem;
            border: 1px solid var(--border-strong);
        }

        .security-section {
            background: var(--bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            margin-bottom: 3rem;
            text-align: center;
        }
        .security-links { display: flex; justify-content: center; gap: 20px; margin: 20px 0; }

        footer {
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin-bottom: 2rem;
            text-align: left;
        }
        .footer-contact { margin-bottom: 1.5rem; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--text-muted); }

        .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;
            backdrop-filter: blur(10px);
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 0.7rem;
            color: var(--text-secondary);
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }

        .util-link { color: var(--text-link); font-weight: 500; text-decoration: underline; }

        @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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .usp-bar { grid-template-columns: repeat(2, 1fr); }
            .announcement-grid { 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(6, 1fr); }
            .game-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .usp-bar { grid-template-columns: repeat(4, 1fr); }
            .announcement-grid { grid-template-columns: repeat(2, 1fr); }
        }

        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }