:root {
            --color-primary: #007AFF;
            --color-primary-hover: #3395FF;
            --color-secondary: #C0C0C8;
            --color-secondary-hover: #E0E0E8;
            --color-accent: #00F2FF;
            --bg-main: #050A15;
            --bg-surface: #0C1426;
            --bg-elevated: #16213D;
            --bg-overlay: rgba(5, 10, 21, 0.8);
            --text-primary: #E6EBF5;
            --text-secondary: #B0B8D1;
            --text-muted: #7A86A3;
            --text-brand-contrast: #050A15;
            --text-link: #00F2FF;
            --text-link-hover: #33D4FF;
            --btn-bg: #007AFF;
            --btn-text: #FFFFFF;
            --btn-hover-bg: #00F2FF;
            --btn-hover-text: #050A15;
            --semantic-success: #00C896;
            --semantic-error: #FF4D4D;
            --semantic-warning: #FFB800;
            --semantic-info: #00A3FF;
            --border-default: #1E2B4A;
            --border-strong: #2D3F6B;
            --border-brand: rgba(0, 242, 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-elevated: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 15px rgba(0, 242, 255, 0.5);
            --grad-brand: linear-gradient(135deg, #007AFF 0%, #00F2FF 100%);
            --grad-hero: radial-gradient(circle at top right, #16213D 0%, #050A15 100%);
            --grad-btn: linear-gradient(180deg, #007AFF 0%, #005BBF 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));
            background-color: var(--bg-main);
            color: var(--text-primary);
            overflow-x: hidden;
        }

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

        .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: all 0.3s ease;
            border: none;
            text-align: center;
            box-sizing: border-box;
        }
        .btn-primary {
            background: var(--grad-btn);
            color: var(--btn-text);
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            background: var(--btn-hover-bg);
            color: var(--btn-hover-text);
            transform: translateY(-2px);
        }
        .btn-secondary {
            background: var(--bg-elevated);
            color: var(--text-primary);
            border: 1px solid var(--border-brand);
        }
        .btn-secondary:hover {
            background: var(--border-strong);
            color: var(--color-accent);
        }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            margin-bottom: 24px;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-brand strong {
            font-size: 16px;
            font-weight: 400;
        }
        .header-actions {
            display: flex;
            gap: 12px;
        }

        main {
            width: 100%;
        }

        .hero-section {
            text-align: center;
            padding: 40px 0;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            margin-bottom: 32px;
        }
        h1 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin: 0 0 20px 0;
            color: var(--text-primary);
        }
        .hero-intro {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 800px;
            margin: 0 auto 30px auto;
            padding-inline: 10px;
        }
        .hero-cta-wrapper {
            width: 100%;
            max-width: 500px;
            margin: 0 auto 24px auto;
        }
        .hero-cta {
            display: block;
            width: 100%;
            font-size: 1.25rem;
            text-transform: uppercase;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 20px;
        }
        .hero-tag {
            background: rgba(0, 242, 255, 0.1);
            border: 1px solid var(--border-brand);
            color: var(--color-accent);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
        }

        .banner-link {
            display: block;
            width: 100%;
            margin-bottom: 32px;
        }
        .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: 40px;
        }
        .cat-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: all 0.3s ease;
        }
        .cat-tile:hover {
            border-color: var(--color-accent);
            background: var(--bg-elevated);
            transform: translateY(-4px);
        }
        .cat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .cat-name {
            display: block;
            font-size: 1.1rem;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .cat-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: block;
        }

        .section-title {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.3rem, 5.2vw, 1.8rem);
            line-height: 1.25;
            margin: 40px 0 24px 0;
            color: var(--text-primary);
            text-align: center;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .game-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .game-card:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
        }
        .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: 1rem;
            color: var(--text-primary);
            font-weight: 500;
        }

        .facts-wrapper {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-lg);
            padding: 24px;
            margin-bottom: 40px;
        }
        .freshness-notice {
            display: block;
            font-style: italic;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
            text-align: center;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 16px;
        }
        .facts-table td {
            padding: 12px;
            border-bottom: 1px solid var(--border-default);
        }
        .facts-label {
            color: var(--text-secondary);
            width: 40%;
            font-weight: 500;
        }
        .facts-value {
            color: var(--text-primary);
            text-align: right;
        }
        .terms-hint {
            display: block;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding: 10px 0 20px 0;
            scrollbar-width: none;
            margin-bottom: 32px;
        }
        .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);
        }
        .toc-link:hover {
            background: var(--border-strong);
            color: var(--color-accent);
        }

        .promo-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }
        .promo-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-brand);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .promo-card h3 {
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--color-accent);
        }
        .promo-body {
            color: var(--text-secondary);
            margin-bottom: 20px;
            max-width: 600px;
        }

        .usp-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-bottom: 40px;
        }
        .usp-tile {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .usp-icon {
            font-size: 1.5rem;
            color: var(--color-accent);
            margin-top: 4px;
        }
        .usp-content strong {
            display: block;
            font-size: 1.1rem;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .usp-content span {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 40px;
        }
        .pay-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
        }
        .pay-icon {
            font-size: 1.8rem;
            color: var(--color-accent);
            margin-bottom: 12px;
        }
        .pay-name {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .pay-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .guide-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }
        .step-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
            display: flex;
            gap: 20px;
        }
        .step-num {
            background: var(--grad-brand);
            color: var(--bg-main);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h3 {
            margin: 0 0 8px 0;
            font-size: 1.1rem;
        }
        .step-content h3 a {
            color: inherit;
            text-decoration: none;
        }
        .step-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .mobile-access-box {
            background: var(--bg-surface);
            border: 1px solid var(--border-brand);
            padding: 30px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-bottom: 40px;
        }
        .mobile-access-box p {
            margin-bottom: 24px;
            color: var(--text-secondary);
        }

        .player-guides {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 40px;
        }
        .guide-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 20px;
            border-radius: var(--radius-md);
        }
        .guide-card h3 {
            margin: 0 0 4px 0;
            font-size: 1.2rem;
            color: var(--color-accent);
        }
        .guide-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: block;
        }

        .announcements {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 40px;
        }
        .ann-item {
            background: var(--bg-surface);
            border-left: 4px solid var(--color-accent);
            padding: 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            display: flex;
            gap: 16px;
        }
        .ann-icon {
            font-size: 1.2rem;
            color: var(--color-accent);
        }
        .ann-content h3 {
            margin: 0 0 8px 0;
            font-size: 1.1rem;
        }
        .ann-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .ann-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .faq-section {
            margin-bottom: 40px;
        }
        details {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
        }
        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;
            color: var(--text-primary);
            font-weight: 500;
        }
        .faq-answer {
            padding: 0 16px 16px 16px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            border-top: 1px solid var(--border-default);
            padding-top: 16px;
        }

        .about-box {
            background: var(--bg-surface);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin-bottom: 40px;
        }
        .team-card {
            margin-top: 30px;
            background: var(--bg-elevated);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
        }

        .security-box {
            background: var(--bg-surface);
            border: 1px solid var(--border-default);
            padding: 30px;
            border-radius: var(--radius-lg);
            margin-bottom: 40px;
        }
        .security-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px 0;
        }
        .security-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border-default);
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .security-list li i { color: var(--semantic-success); }
        .rg-links {
            display: flex;
            gap: 16px;
            margin: 20px 0;
            flex-wrap: wrap;
        }
        .rg-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            border: 1px solid var(--border-default);
        }

        footer {
            background: var(--bg-surface);
            padding: 40px 0;
            border-top: 1px solid var(--border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 32px auto;
            text-align: center;
        }
        .footer-sitemap a {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .footer-contact {
            margin-bottom: 24px;
            color: var(--text-secondary);
        }
        .footer-legal {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
            max-width: 700px;
            margin: 0 auto;
        }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            background: var(--bg-surface);
            border-top: 1px solid var(--border-brand);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding: 12px 0 calc(12px + env(safe-area-inset-bottom, 0px));
            z-index: 1000;
            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;
            margin-bottom: 2px;
        }
        .nav-item:hover { color: var(--color-accent); }

        .util-link {
            display: block;
            text-align: center;
            margin-top: 16px;
            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(4, 1fr); }
            .payment-grid { grid-template-columns: repeat(4, 1fr); }
            .usp-grid { grid-template-columns: repeat(2, 1fr); }
            .navigator { position: static; display: none; }
            body { padding-bottom: 0; }
        }

        @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); }
        }