:root {
            --color-primary: #0F2A4D;
            --color-primary-hover: #163C6B;
            --color-secondary: #C0C0C8;
            --color-secondary-hover: #D8D8E0;
            --color-accent: #00F5FF;
            --color-bg-main: #060D1A;
            --color-bg-surface: #0B1629;
            --color-bg-elevated: #12213B;
            --color-text-primary: #E6EBF5;
            --color-text-secondary: #A0B0C5;
            --color-text-muted: #6B7D96;
            --color-brand-contrast: #060D1A;
            --color-link: #00F5FF;
            --color-link-hover: #70F9FF;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #060D1A;
            --color-btn-hover-bg: #70F9FF;
            --color-border-default: #1C2F4D;
            --color-border-strong: #2A4166;
            --color-border-brand: #00F5FF;
            --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-glow: 0 0 15px rgba(0, 245, 255, 0.4);
            --grad-brand: linear-gradient(135deg, #0F2A4D 0%, #060D1A 100%);
            --grad-hero: radial-gradient(circle at top right, #163C6B 0%, #060D1A 70%);
            --grad-btn: linear-gradient(180deg, #00F5FF 0%, #00D1DB 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(--color-bg-main);
            color: var(--color-text-primary);
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-link); text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: var(--color-link-hover); }

        .btn, .cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            min-inline-size: 44px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            cursor: pointer;
            border: none;
            text-align: center;
            transition: transform 0.2s ease, filter 0.2s ease;
        }
        .btn-primary {
            background: var(--grad-btn);
            color: var(--color-btn-text);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }
        .btn-secondary {
            background: var(--color-bg-elevated);
            color: var(--color-text-primary);
            border: 1px solid var(--color-border-brand);
        }
        .btn-secondary:hover { background: var(--color-primary-hover); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-default);
            margin-bottom: 24px;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; color: var(--color-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: 0 0 20px 0; color: var(--color-accent); }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin: 2rem 0 1.5rem 0; color: var(--color-text-primary); }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin: 0 0 10px 0; color: var(--color-text-primary); }

        .hero-wrapper {
            background: var(--grad-hero);
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-brand);
            text-align: center;
            margin-bottom: 24px;
        }
        .hero-intro { font-size: 1.1rem; color: var(--color-text-secondary); margin-bottom: 24px; }
        .hero-cta { display: block; width: 100%; margin-bottom: 24px; font-size: 1.2rem; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
        .hero-tag {
            background: rgba(0, 245, 255, 0.1);
            border: 1px solid var(--color-accent);
            color: var(--color-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
        }

        .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: border-color 0.3s ease;
        }
        .category-tile:hover { border-color: var(--color-accent); }
        .category-tile i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .category-tile .cat-name { display: block; font-weight: 600; margin-bottom: 8px; }
        .category-tile .cat-desc { font-size: 0.85rem; color: var(--color-text-muted); display: block; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .game-card {
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border-default);
            transition: transform 0.2s ease;
        }
        .game-card:hover { transform: scale(1.03); border-color: var(--color-accent); }
        .game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
        .game-card h3 { padding: 12px; font-size: 1rem; text-align: center; margin: 0; }

        .facts-wrapper {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 24px;
        }
        .freshness-notice { font-style: italic; color: var(--color-text-muted); font-size: 0.9rem; 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-footer { margin-top: 16px; font-size: 0.85rem; text-align: center; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 12px 0;
            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);
            border: 1px solid var(--color-border-default);
            font-size: 0.9rem;
        }

        .promo-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-strong);
            padding: 24px;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .promo-card h3 { color: var(--color-accent); }

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

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .pay-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .pay-card i { font-size: 2rem; color: var(--color-accent); margin-bottom: 12px; }
        .pay-card strong { display: block; margin-bottom: 8px; }
        .pay-card p { font-size: 0.85rem; color: var(--color-text-muted); margin: 0; }

        .guide-steps { display: grid; gap: 20px; }
        .step-item {
            display: flex;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .step-num {
            min-width: 36px;
            height: 36px;
            background: var(--color-accent);
            color: var(--color-bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }
        .step-content h3 a { color: inherit; }

        .download-section {
            background: var(--color-bg-surface);
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--color-border-strong);
        }

        .guide-item {
            background: var(--color-bg-surface);
            border-left: 4px solid var(--color-accent);
            padding: 20px;
            margin-bottom: 16px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .guide-meta { font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 12px; display: block; }

        .announcement-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            border-bottom: 1px solid var(--color-border-default);
        }
        .announcement-item i { color: var(--color-accent); margin-top: 4px; }
        .announcement-date { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-top: 8px; }

        .faq-item { margin-bottom: 16px; border: 1px solid var(--color-border-default); border-radius: var(--radius-md); }
        .faq-item summary { padding: 16px; cursor: pointer; list-style: none; display: flex; align-items: center; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; }
        .faq-item p { padding: 0 16px 16px 16px; color: var(--color-text-secondary); margin: 0; }

        .about-card {
            background: var(--color-bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-strong);
        }
        .team-card {
            margin-top: 24px;
            padding: 20px;
            background: var(--color-bg-elevated);
            border-radius: var(--radius-md);
            border-top: 2px solid var(--color-accent);
        }

        .security-box {
            background: var(--color-bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .security-links { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0; }
        .security-links a { background: var(--color-bg-elevated); padding: 8px 12px; border-radius: var(--radius-sm); font-size: 0.9rem; }

        footer {
            margin-top: 40px;
            padding: 40px 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: 32px;
            text-align: left;
        }
        .footer-contact { margin-bottom: 24px; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.85rem; 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-brand);
            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;
            color: var(--color-text-secondary);
            font-size: 0.75rem;
            gap: 4px;
        }
        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--color-accent); }

        .utility-link { color: var(--color-accent); font-weight: 600; text-decoration: underline; }

        @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); }
            .navigator { position: static; display: none; }
        }

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