:root {
            --color-primary: #1A3A5F;
            --color-primary-hover: #254E82;
            --color-secondary: #C0C0C5;
            --color-secondary-hover: #E0E0E5;
            --color-accent: #00F5FF;
            --color-bg-main: #050A14;
            --color-bg-surface: #0B1424;
            --color-bg-elevated: #131E33;
            --color-text-primary: #E6F0FF;
            --color-text-secondary: #B0C4DE;
            --color-text-muted: #788FA9;
            --color-text-link: #00F5FF;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050A14;
            --color-btn-hover: #70F8FF;
            --color-border-default: #1E2C44;
            --color-border-brand: rgba(0, 245, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --shadow-glow: 0 0 15px rgba(0, 245, 255, 0.6);
            --grad-brand: linear-gradient(135deg, #1A3A5F 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at center, #131E33 0%, #050A14 100%);
            --grad-btn: linear-gradient(to right, #00F5FF, #70F8FF);
        }

        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(--color-bg-main);
            color: var(--color-text-primary);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-text-link); text-decoration: none; transition: color 0.3s; }
        a:hover { color: var(--color-btn-hover); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-logo { display: flex; align-items: center; gap: 8px; }
        .header-logo strong { font-size: 16px; font-weight: 400; }
        .header-nav { display: flex; gap: 12px; }
        .btn-nav {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 14px;
            background: var(--color-bg-elevated);
            color: var(--color-text-primary);
            border: 1px solid var(--color-border-default);
        }
        .btn-nav-primary {
            background: var(--grad-btn);
            color: var(--color-btn-text);
            border: none;
        }

        main { max-width: 1200px; margin: 0 auto; }

        .hero-section {
            text-align: center;
            padding: 40px 0;
            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: 16px;
            color: var(--color-text-primary);
        }
        .hero-intro {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            margin-bottom: 24px;
            padding-inline: 20px;
        }
        .hero-cta {
            display: block;
            width: 100%;
            max-width: 400px;
            margin: 0 auto 24px;
            padding: 16px;
            border-radius: var(--radius-pill);
            background: var(--grad-btn);
            color: var(--color-btn-text);
            font-weight: 700;
            font-size: 1.2rem;
            text-transform: uppercase;
            box-shadow: var(--shadow-glow);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .hero-tag {
            padding: 4px 12px;
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--color-border-brand);
            color: var(--color-accent);
            border-radius: var(--radius-pill);
            font-size: 13px;
        }

        .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(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: transform 0.3s, border-color 0.3s;
        }
        .category-tile:hover { transform: translateY(-5px); border-color: var(--color-accent); }
        .category-tile i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .category-tile strong { display: block; font-size: 1.1rem; margin-bottom: 8px; color: var(--color-text-primary); }
        .category-tile span { font-size: 13px; color: var(--color-text-muted); line-height: 1.4; }

        h2 {
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 32px;
            margin-bottom: 20px;
            border-left: 4px solid var(--color-accent);
            padding-left: 12px;
        }
        h3 {
            font-size: clamp(1.05rem, 4.2vw, 1.25rem);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }
        .game-card {
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-default);
            transition: border-color 0.3s;
        }
        .game-card:hover { border-color: var(--color-accent); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 {
            padding: 12px;
            margin: 0;
            font-size: 1rem;
            text-align: center;
            color: var(--color-text-primary);
        }

        .facts-container {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 32px;
        }
        .freshness-notice {
            font-style: italic;
            color: var(--color-text-muted);
            font-size: 14px;
            margin-bottom: 16px;
            display: block;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
        }
        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--color-border-default);
        }
        .facts-table td:first-child { font-weight: 600; color: var(--color-text-secondary); width: 40%; }
        .facts-table td:last-child { color: var(--color-text-primary); }
        .terms-link-wrap {
            margin-top: 16px;
            font-size: 14px;
            text-align: center;
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding-bottom: 12px;
            margin-bottom: 32px;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            white-space: nowrap;
            background: var(--color-bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            border: 1px solid var(--color-border-default);
        }

        .promo-list { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .promo-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-brand);
            padding: 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
        }
        .promo-card h3 { color: var(--color-accent); }
        .promo-body { color: var(--color-text-secondary); margin-bottom: 20px; }
        .btn-promo {
            display: inline-block;
            padding: 10px 20px;
            background: var(--grad-btn);
            color: var(--color-btn-text);
            border-radius: var(--radius-sm);
            font-weight: 600;
        }

        .usp-bar {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 32px;
        }
        .usp-tile {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--color-accent); margin-top: 4px; }
        .usp-content strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 14px; color: var(--color-text-muted); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }
        .payment-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
            text-align: center;
        }
        .payment-card i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .payment-card strong { display: block; margin-bottom: 8px; }
        .payment-card p { font-size: 13px; color: var(--color-text-muted); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .step-item {
            display: flex;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .step-num {
            width: 36px;
            height: 36px;
            background: var(--grad-brand);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h3 a { color: inherit; text-decoration: none; }

        .download-box {
            background: var(--color-bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border-brand);
            margin-bottom: 32px;
        }
        .btn-download {
            display: block;
            width: 100%;
            max-width: 300px;
            margin: 20px auto;
            padding: 16px;
            background: var(--grad-btn);
            color: var(--color-btn-text);
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.1rem;
        }

        .player-guides { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
        .guide-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .guide-meta { font-size: 13px; color: var(--color-text-muted); margin-bottom: 12px; display: block; }

        .announcements { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
        .announcement-item {
            display: flex;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .announcement-item i { color: var(--color-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-date { font-size: 12px; color: var(--color-text-muted); display: block; margin-top: 8px; }

        .faq-section { margin-bottom: 32px; }
        details {
            background: var(--color-bg-surface);
            margin-bottom: 12px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-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: 1.1rem; }
        .faq-answer { padding: 0 16px 16px; color: var(--color-text-secondary); }

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

        .security-section {
            background: var(--color-bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-default);
            margin-bottom: 32px;
        }
        .external-links { display: flex; gap: 16px; margin: 20px 0; flex-wrap: wrap; }
        .ext-link { padding: 8px 16px; background: var(--color-bg-elevated); border-radius: var(--radius-sm); font-size: 14px; }

        footer {
            background: var(--color-bg-surface);
            padding: 40px 0 24px;
            border-top: 1px solid var(--color-border-default);
            margin-top: 40px;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin-bottom: 32px;
            text-align: center;
        }
        .footer-sitemap a { font-size: 14px; color: var(--color-text-secondary); }
        .footer-contact { text-align: center; margin-bottom: 24px; font-size: 14px; }
        .footer-legal { text-align: center; font-size: 13px; color: var(--color-text-muted); }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border-default);
            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;
            gap: 4px;
            color: var(--color-text-secondary);
            font-size: 11px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--color-accent); }

        .util-link {
            display: block;
            text-align: center;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
        }

        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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { position: static; height: auto; padding: 20px 0; border: none; display: none; }
        }

        @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); }
        }