:root {
            --brand-primary: #1E3A8A;
            --brand-primary-hover: #2563EB;
            --brand-secondary: #CBD5E1;
            --brand-secondary-hover: #F1F5F9;
            --brand-accent: #06B6D4;
            --bg-main: #0A0F1C;
            --bg-surface: #131B2B;
            --bg-elevated: #1C263B;
            --bg-overlay: rgba(10, 15, 28, 0.8);
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --text-brand-contrast: #0F172A;
            --text-link: #22D3EE;
            --text-link-hover: #A5F3FC;
            --btn-bg: #06B6D4;
            --btn-text: #0F172A;
            --btn-bg-hover: #22D3EE;
            --btn-text-hover: #0F172A;
            --border-default: #2D3748;
            --border-strong: #4A5568;
            --border-brand: #06B6D4;
            --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-elevated: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 15px rgba(6, 182, 212, 0.5);
            --grad-brand: linear-gradient(135deg, #1E3A8A 0%, #06B6D4 100%);
            --grad-hero: radial-gradient(circle at center, #1E3A8A 0%, #0A0F1C 100%);
            --grad-btn: linear-gradient(to right, #06B6D4, #22D3EE);
        }

        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(--bg-main);
            color: var(--text-primary);
        }

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

        .btn, .cta-button {
            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 ease, background 0.2s ease;
            text-align: center;
        }

        .cta-primary {
            background: var(--grad-btn);
            color: var(--btn-text);
            font-size: 1.1rem;
            box-shadow: var(--shadow-glow);
        }

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

        .cta-secondary {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border: 1px solid var(--border-brand);
        }

        .cta-secondary:hover {
            background: var(--border-strong);
        }

        h1 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.6rem, 6.5vw, 2.4rem); line-height: 1.2; margin-bottom: 1rem; color: #fff; }
        h2 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.3rem, 5.2vw, 1.8rem); line-height: 1.25; margin-top: 2rem; margin-bottom: 1.2rem; color: #fff; }
        h3 { font-family: 'Be Vietnam Pro', sans-serif; font-size: clamp(1.05rem, 4.2vw, 1.25rem); line-height: 1.3; margin-bottom: 0.8rem; color: var(--text-primary); }

        header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-overlay);
            backdrop-filter: blur(10px);
        }

        .header-logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .header-brand-name {
            font-size: 16px;
            font-weight: normal;
            color: #fff;
        }

        .header-actions {
            display: flex;
            gap: 10px;
        }

        main { width: 100%; }

        .hero-section {
            padding: 3rem 0;
            text-align: center;
            background: var(--grad-hero);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .hero-intro {
            max-width: 800px;
            margin: 0 auto 2rem;
            padding-inline: 1rem;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin-top: 1.5rem;
        }

        .hero-tag {
            background: rgba(6, 182, 212, 0.15);
            border: 1px solid var(--brand-accent);
            color: var(--brand-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .banner-container {
            margin: 1rem 0;
            line-height: 0;
        }

        .banner-container 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: 12px;
            margin: 2rem 0;
        }

        .category-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 1.5rem 1rem;
            border-radius: var(--radius-md);
            text-align: center;
            transition: border-color 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .category-tile:hover {
            border-color: var(--brand-accent);
            background: var(--bg-elevated);
        }

        .category-tile i {
            font-size: 2rem;
            color: var(--brand-accent);
        }

        .category-tile strong {
            display: block;
            font-size: 1.1rem;
            color: #fff;
        }

        .category-tile span {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 2rem;
        }

        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-default);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .game-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
            border-color: var(--brand-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: #fff;
        }

        .facts-section {
            background: var(--bg-surface);
            padding: 2rem 1.5rem;
            border-radius: var(--radius-lg);
            margin: 2rem 0;
            border: 1px solid var(--border-default);
        }

        .freshness-notice {
            font-style: italic;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            display: block;
        }

        .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: 0.95rem;
        }

        .facts-label {
            color: var(--text-secondary);
            width: 40%;
            font-weight: 500;
        }

        .facts-value {
            color: #fff;
            font-weight: 400;
        }

        .terms-link-wrapper {
            font-size: 0.85rem;
            text-align: center;
            color: var(--text-muted);
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 1rem 0;
            scrollbar-width: none;
        }

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

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

        .promo-section { margin: 3rem 0; }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 2rem;
            border-radius: var(--radius-lg);
            margin-bottom: 1.5rem;
            transition: border-color 0.3s ease;
        }
        .promo-card:hover { border-color: var(--brand-accent); }

        .usp-bar {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
            margin: 2rem 0;
        }

        .usp-tile {
            background: var(--bg-elevated);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            display: flex;
            gap: 15px;
            align-items: flex-start;
            border-left: 4px solid var(--brand-accent);
        }

        .usp-tile i {
            font-size: 1.5rem;
            color: var(--brand-accent);
            margin-top: 4px;
        }

        .usp-content strong {
            display: block;
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 5px;
        }

        .usp-content p {
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 2rem 0;
        }

        .payment-card {
            background: var(--bg-surface);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-default);
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .payment-card i { font-size: 1.8rem; color: var(--brand-accent); }
        .payment-card strong { display: block; color: #fff; margin-bottom: 5px; }
        .payment-card p { margin: 0; font-size: 0.8rem; color: var(--text-secondary); }

        .guide-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin: 2rem 0;
        }

        .step-item {
            display: flex;
            gap: 15px;
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
        }

        .step-badge {
            background: var(--brand-accent);
            color: var(--btn-text);
            min-width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .step-content h3 { margin-top: 0; }
        .step-content a { color: inherit; text-decoration: none; }

        .download-section {
            background: var(--bg-elevated);
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            margin: 3rem 0;
            border: 1px solid var(--border-default);
        }

        .player-guides { margin: 3rem 0; }
        .guide-item {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            border: 1px solid var(--border-default);
        }
        .guide-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: block;
        }

        .announcement-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
            margin: 2rem 0;
        }

        .announcement-item {
            background: var(--bg-surface);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-primary);
            display: flex;
            gap: 15px;
        }

        .announcement-item i { color: var(--brand-accent); font-size: 1.2rem; margin-top: 5px; }
        .announcement-text h3 { margin: 0 0 5px 0; font-size: 1.1rem; }
        .announcement-text p { margin: 0 0 8px 0; font-size: 0.9rem; color: var(--text-secondary); }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); }

        .faq-container { margin: 3rem 0; }
        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
        }
        .faq-item summary {
            padding: 15px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .faq-item summary h3 { margin: 0; font-size: 1.05rem; }
        .faq-item p { padding: 0 15px 15px; margin: 0; color: var(--text-secondary); font-size: 0.95rem; }

        .about-section {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            margin: 3rem 0;
            border: 1px solid var(--border-default);
        }

        .team-card {
            background: var(--bg-elevated);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            margin-top: 2rem;
            border: 1px solid var(--border-brand);
        }

        .security-footer {
            background: var(--bg-surface);
            padding: 2rem;
            border-radius: var(--radius-lg);
            margin: 3rem 0;
            border: 1px solid var(--border-default);
        }

        footer {
            background: var(--bg-surface);
            padding: 3rem 0 2rem;
            border-top: 1px solid var(--border-default);
            margin-top: 4rem;
        }

        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 2rem;
        }

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

        .footer-contact {
            text-align: center;
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .footer-legal {
            text-align: center;
            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-default);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            z-index: 2000;
            backdrop-filter: blur(10px);
        }

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

        .nav-item i { font-size: 1.2rem; }
        .nav-item:hover { color: var(--brand-accent); }

        .util-link {
            display: block;
            text-align: center;
            margin-top: 1rem;
            font-weight: 600;
            color: var(--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(3, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .guide-steps { grid-template-columns: repeat(2, 1fr); }
            .usp-bar { grid-template-columns: repeat(3, 1fr); }
            .announcement-list { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
            body { padding-bottom: 24px; }
        }

        @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); }
        }