:root {
            --color-brand-primary: #0D2142;
            --color-brand-hover: #15305C;
            --color-brand-secondary: #C0C0C8;
            --color-brand-accent: #00F5FF;
            --color-bg-main: #050B18;
            --color-bg-surface: #0B1529;
            --color-bg-elevated: #121E36;
            --color-text-primary: #E6EBF5;
            --color-text-secondary: #A9B6D1;
            --color-text-muted: #6D7B96;
            --color-text-link: #00F5FF;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050B18;
            --color-border-default: #1C2B4D;
            --color-border-brand: #00F5FF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --font-headings: 'Be Vietnam Pro', sans-serif;
            --font-body: 'Be Vietnam Pro', sans-serif;
        }

        html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-body);
            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 0.2s; }
        a:hover { color: #70F9FF; }
        .btn {
            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;
            border: none;
            transition: transform 0.2s, background-color 0.2s;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(180deg, #00F5FF 0%, #00D1DC 100%);
            color: var(--color-btn-text);
        }
        .btn-primary:hover { transform: translateY(-2px); background: #70F9FF; }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-brand-accent);
            color: var(--color-brand-accent);
        }
        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            margin-bottom: 24px;
        }
        .header-logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-brand-name {
            font-size: 16px;
            font-weight: normal;
            color: var(--color-text-primary);
        }
        .header-actions {
            display: flex;
            gap: 10px;
        }

        main { width: 100%; }
        h1 {
            font-family: var(--font-headings);
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin: 0 0 16px 0;
            color: var(--color-text-primary);
        }
        h2 {
            font-family: var(--font-headings);
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 2rem;
            margin-bottom: 1.25rem;
            color: var(--color-text-primary);
        }
        h3 {
            font-family: var(--font-headings);
            font-size: clamp(1.05rem, 4.2vw, 1.25rem);
            line-height: 1.3;
            margin-bottom: 0.75rem;
            color: var(--color-text-primary);
        }

        .hero-section {
            padding: 24px 0;
            text-align: center;
        }
        .hero-intro {
            margin-bottom: 24px;
            color: var(--color-text-secondary);
            max-width: 700px;
            margin-inline: auto;
        }
        .hero-cta-wrapper { margin-bottom: 24px; }
        .btn-full { width: 100%; box-sizing: border-box; }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }
        .tag-pill {
            background: rgba(11, 21, 41, 0.6);
            border: 1px solid var(--color-border-default);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            backdrop-filter: blur(4px);
        }

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

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 24px 0;
        }
        .category-tile {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-md);
            padding: 16px;
            text-align: center;
            text-decoration: none;
            transition: border-color 0.3s;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .category-tile:hover { border-color: var(--color-brand-accent); }
        .category-icon { font-size: 1.5rem; color: var(--color-brand-accent); }
        .category-label { font-weight: 600; color: var(--color-text-primary); display: block; }
        .category-desc { font-size: 0.8rem; color: var(--color-text-muted); line-height: 1.4; }

        .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;
            text-decoration: none;
            border: 1px solid var(--color-border-default);
            transition: transform 0.2s;
        }
        .game-card:hover { transform: translateY(-4px); border-color: var(--color-border-brand); }
        .game-img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-info { padding: 12px; text-align: center; }
        .game-info h3 { margin: 0; font-size: 0.95rem; color: var(--color-text-primary); }

        .facts-table-wrapper {
            background: var(--color-bg-surface);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid var(--color-border-default);
            margin-bottom: 24px;
        }
        .freshness-notice {
            font-style: italic;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            display: block;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
        }
        .facts-row { border-bottom: 1px solid var(--color-border-default); }
        .facts-label { padding: 12px 0; color: var(--color-text-secondary); font-weight: 500; width: 40%; }
        .facts-value { padding: 12px 0; color: var(--color-text-primary); text-align: right; }
        .terms-footer-link {
            display: block;
            text-align: center;
            margin-top: 12px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding-bottom: 12px;
            margin: 24px 0;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--color-bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--color-border-default);
        }

        .promo-container {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 32px;
        }
        .promo-card {
            background: linear-gradient(135deg, var(--color-bg-surface), var(--color-bg-elevated));
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .promo-card h3 { margin-top: 0; }
        .promo-text { color: var(--color-text-secondary); margin-bottom: 8px; }

        .usp-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-bottom: 32px;
        }
        .usp-tile {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            padding: 16px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .usp-icon { font-size: 1.25rem; color: var(--color-brand-accent); margin-top: 4px; }
        .usp-content strong { display: block; color: var(--color-text-primary); margin-bottom: 4px; }
        .usp-content p { margin: 0; font-size: 0.9rem; color: var(--color-text-secondary); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 32px;
        }
        .payment-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            padding: 16px;
            border-radius: var(--radius-md);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .payment-card i { font-size: 1.5rem; color: var(--color-brand-accent); }
        .payment-name { font-weight: 600; display: block; }
        .payment-desc { font-size: 0.75rem; color: var(--color-text-muted); }

        .guide-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 32px;
        }
        .guide-step {
            display: flex;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-default);
        }
        .step-number {
            background: var(--color-brand-accent);
            color: var(--color-btn-text);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }
        .step-content h3 { margin: 0 0 8px 0; }
        .step-content a { color: inherit; text-decoration: none; }

        .app-section {
            background: var(--color-bg-elevated);
            padding: 32px 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-bottom: 32px;
            border: 1px solid var(--color-border-default);
        }
        .app-text { color: var(--color-text-secondary); margin-bottom: 24px; }

        .player-guide-item {
            border-bottom: 1px solid var(--color-border-default);
            padding: 20px 0;
        }
        .player-guide-item:last-child { border-bottom: none; }
        .meta-text { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-bottom: 8px; }

        .announcement-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 32px;
        }
        .announcement-card {
            background: var(--color-bg-surface);
            padding: 16px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-brand-accent);
            display: flex;
            gap: 16px;
        }
        .announcement-icon { font-size: 1.2rem; color: var(--color-brand-accent); }
        .announcement-body h3 { margin: 0 0 8px 0; font-size: 1rem; }
        .announcement-date { font-size: 0.75rem; color: var(--color-text-muted); display: block; margin-top: 8px; }

        .faq-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 32px;
        }
        .faq-item {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-md);
        }
        .faq-item summary {
            padding: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary h3 { margin: 0; font-size: 1rem; pointer-events: none; }
        .faq-answer { padding: 0 16px 16px 16px; color: var(--color-text-secondary); font-size: 0.95rem; }

        .about-section {
            background: var(--color-bg-surface);
            padding: 24px;
            border-radius: var(--radius-lg);
            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-default);
        }

        .security-section {
            padding: 24px;
            border: 1px solid var(--color-border-default);
            border-radius: var(--radius-lg);
            margin-bottom: 32px;
        }
        .security-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin: 16px 0;
        }

        footer {
            background: var(--color-bg-surface);
            padding: 32px 0;
            border-top: 1px solid var(--color-border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin-bottom: 24px;
            max-width: 800px;
            margin-inline: auto;
        }
        .footer-sitemap a { font-size: 0.85rem; color: var(--color-text-secondary); }
        .footer-contact { margin-bottom: 24px; font-size: 0.9rem; }
        .footer-legal { font-size: 0.8rem; color: var(--color-text-muted); max-width: 700px; margin-inline: auto; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: rgba(11, 21, 41, 0.95);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--color-border-default);
            display: flex;
            justify-content: space-around;
            padding: 10px 0 calc(10px + env(safe-area-inset-bottom, 0px));
            z-index: 1000;
        }
        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            text-decoration: none;
            font-size: 0.7rem;
            color: var(--color-text-secondary);
        }
        .nav-item i { font-size: 1.2rem; }

        .util-link {
            display: inline-block;
            margin-top: 16px;
            font-weight: 600;
            color: var(--color-brand-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(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .guide-steps { flex-direction: row; }
            .guide-step { flex-direction: column; align-items: center; text-align: center; }
            .navigator { display: none; }
            .promo-container { flex-direction: row; }
            .promo-card { flex: 1; }
        }

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