:root {
            --color-primary: #0B2C5E;
            --color-primary-hover: #12418A;
            --color-secondary: #BCC6CC;
            --color-secondary-hover: #D1D9DE;
            --color-accent: #00F5FF;
            --color-bg-main: #050C1A;
            --color-bg-surface: #0C162D;
            --color-bg-elevated: #152242;
            --color-text-primary: #E6EEFF;
            --color-text-secondary: #B0BBE0;
            --color-text-muted: #7A8BBA;
            --color-btn-bg: #00F5FF;
            --color-btn-text: #050C1A;
            --color-btn-hover-bg: #70F8FF;
            --color-border: #1E2D52;
            --color-border-strong: #2D417A;
            --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, #0B2C5E 0%, #00F5FF 100%);
            --grad-hero: radial-gradient(circle at top right, #12418A, #050C1A 70%);
            --grad-btn: linear-gradient(180deg, #00F5FF 0%, #00D1DC 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(--color-bg-main);
            color: var(--color-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; font-style: italic; }
        a { color: var(--color-accent); text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: var(--color-btn-hover-bg); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            max-width: 1200px;
            margin: 0 auto;
        }

        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: 400; color: var(--color-text-primary); }
        .header-auth { 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-md);
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s ease, background 0.3s ease;
            border: none;
            text-align: center;
        }

        .btn-primary {
            background: var(--grad-btn);
            color: var(--color-btn-text);
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover { background: var(--color-btn-hover-bg); transform: translateY(-2px); }

        .btn-outline {
            background: transparent;
            color: var(--color-text-primary);
            border: 1px solid var(--color-border-brand);
        }

        .btn-outline:hover { background: rgba(0, 245, 255, 0.1); }

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

        .hero-section {
            padding: 40px 0;
            text-align: center;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            margin-bottom: 24px;
        }

        h1 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--color-text-primary);
        }

        .hero-intro {
            max-width: 800px;
            margin: 0 auto 30px;
            color: var(--color-text-secondary);
            padding-inline: 20px;
        }

        .hero-cta { display: block; width: 100%; max-width: 400px; margin: 0 auto 24px; }

        .feature-pills {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .pill {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--color-border);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            backdrop-filter: blur(4px);
        }

        .banner-link { display: block; width: 100%; margin-bottom: 30px; border-radius: var(--radius-md); overflow: hidden; }
        .banner-link img { width: 100%; aspect-ratio: 2/1; object-fit: cover; }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }

        .category-tile {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .category-tile:hover { border-color: var(--color-accent); background: var(--color-bg-elevated); transform: translateY(-5px); }
        .category-tile i { font-size: 2rem; color: var(--color-accent); }
        .category-tile strong { display: block; font-size: 1.1rem; margin-bottom: 4px; }
        .category-tile span { font-size: 0.85rem; color: var(--color-text-muted); }

        .games-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }

        .game-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            text-decoration: none;
            display: flex;
            flex-direction: column;
        }

        .game-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-card); }
        .game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
        .game-card h3 {
            font-size: 1rem;
            padding: 12px;
            margin: 0;
            color: var(--color-text-primary);
            text-align: center;
        }

        .facts-section {
            background: var(--color-bg-surface);
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 40px;
        }

        .freshness-notice {
            font-style: italic;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            display: block;
        }

        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 16px;
        }

        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text-secondary);
        }

        .facts-table td:first-child {
            font-weight: 600;
            color: var(--color-text-primary);
            width: 40%;
        }

        .terms-link {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            display: block;
            text-align: center;
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 12px 0 24px;
            scrollbar-width: none;
        }

        .toc-nav::-webkit-scrollbar { display: none; }

        .toc-link {
            background: var(--color-bg-surface);
            color: var(--color-text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            border: 1px solid var(--color-border);
        }

        .toc-link:hover { background: var(--color-border-strong); color: var(--color-accent); }

        h2 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin-top: 40px;
            margin-bottom: 20px;
            color: var(--color-text-primary);
        }

        .promo-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 40px; }
        .promo-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            padding: 24px;
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            gap: 16px;
            transition: border-color 0.3s ease;
        }
        .promo-card:hover { border-color: var(--color-accent); }

        .usp-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
            margin-bottom: 40px;
        }

        .usp-tile {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .usp-tile i { font-size: 1.5rem; color: var(--color-accent); min-width: 30px; }
        .usp-content strong { display: block; margin-bottom: 4px; color: var(--color-text-primary); }
        .usp-content span { font-size: 0.9rem; color: var(--color-text-muted); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }

        .payment-card {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .payment-card i { font-size: 2rem; color: var(--color-accent); }
        .payment-card strong { display: block; color: var(--color-text-primary); }
        .payment-card p { font-size: 0.85rem; color: var(--color-text-muted); margin: 0; }

        .guide-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }

        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
        }

        .step-num {
            background: var(--color-accent);
            color: var(--color-bg-main);
            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; }
        .step-content a { color: inherit; text-decoration: none; }

        .download-panel {
            background: var(--color-bg-surface);
            padding: 30px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            text-align: center;
            margin-bottom: 40px;
        }

        .player-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-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 40px;
        }

        .announcement-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            display: flex;
            gap: 16px;
        }

        .announcement-card i { color: var(--color-accent); font-size: 1.2rem; margin-top: 4px; }
        .announcement-body h3 { margin: 0 0 8px; font-size: 1.1rem; }
        .announcement-date { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-top: 8px; }

        .faq-container {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 40px;
        }

        details {
            background: var(--color-bg-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        summary {
            padding: 16px;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary h3 { margin: 0; font-size: 1.05rem; color: var(--color-text-primary); }
        summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--color-accent); transition: transform 0.3s; }
        details[open] summary::after { transform: rotate(180deg); }
        .faq-answer { padding: 0 16px 16px; color: var(--color-text-secondary); font-size: 0.95rem; }

        .trust-statement {
            background: var(--color-bg-surface);
            padding: 30px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 24px;
        }

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

        .security-panel {
            background: var(--color-bg-surface);
            padding: 30px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 40px;
        }

        footer {
            background: var(--color-bg-surface);
            padding: 40px 0 80px;
            border-top: 1px solid var(--color-border);
            text-align: center;
            margin-top: 60px;
        }

        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 30px;
            text-align: center;
        }

        .footer-sitemap a { color: var(--color-text-secondary); font-size: 0.9rem; }

        .footer-contact { margin-bottom: 20px; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.85rem; color: var(--color-text-muted); max-width: 700px; margin: 0 auto; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: rgba(12, 22, 45, 0.95);
            backdrop-filter: blur(10px);
            display: flex;
            justify-content: space-around;
            align-items: center;
            border-top: 1px solid var(--color-border);
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 1000;
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 0.75rem;
            gap: 4px;
            text-decoration: none;
        }

        .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; }

        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); }
            .games-grid { grid-template-columns: repeat(2, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .navigator { display: none; }
            footer { padding-bottom: 40px; }
        }

        @media (min-width: 1200px) {
            body { padding-inline: 32px; max-width: 1200px; margin-inline: auto; }
            .category-grid { grid-template-columns: repeat(4, 1fr); }
            .games-grid { grid-template-columns: repeat(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(7, 1fr); }
        }