:root {
            --color-brand-primary: #1E40AF;
            --color-brand-primary-hover: #2563EB;
            --color-brand-secondary: #94A3B8;
            --color-brand-accent: #06B6D4;
            --color-bg-main: #050B18;
            --color-bg-surface: #0D172B;
            --color-bg-elevated: #16223D;
            --color-text-primary: #E2E8F0;
            --color-text-secondary: #94A3B8;
            --color-text-muted: #64748B;
            --color-btn-bg: #06B6D4;
            --color-btn-text: #050B18;
            --color-btn-hover: #22D3EE;
            --color-border-default: #1E293B;
            --color-border-brand: rgba(6, 182, 212, 0.5);
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 24px;
            --radius-pill: 9999px;
            --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
            --grad-brand: linear-gradient(135deg, #1E40AF 0%, #06B6D4 100%);
            --grad-hero: radial-gradient(circle at center, #1E3A8A 0%, #050B18 100%);
            --grad-btn: linear-gradient(to bottom, #06B6D4 0%, #0891B2 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; }
        a { color: #38BDF8; text-decoration: none; transition: color 0.2s; }
        a:hover { color: #7DD3FC; }

        .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, opacity 0.2s;
            text-align: center;
            border: none;
        }
        .btn-primary {
            background: var(--grad-btn);
            color: var(--color-btn-text);
        }
        .btn-primary:hover { background-color: var(--color-btn-hover); transform: translateY(-2px); }
        .btn-outline {
            border: 1px solid var(--color-brand-accent);
            color: var(--color-brand-accent);
            background: transparent;
        }
        .btn-outline:hover { background: rgba(6, 182, 212, 0.1); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-block: 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .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: 12px;
        }

        main { max-width: 1200px; margin: 0 auto; }
        section {
            padding-block: 40px 0;
            content-visibility: auto;
            contain-intrinsic-size: 1px 500px;
        }

        h1 {
            font-family: 'Be Vietnam Pro', sans-serif;
            font-size: clamp(1.6rem, 6.5vw, 2.4rem);
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: #FFFFFF;
            text-align: center;
        }
        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: 1.5rem;
            color: var(--color-brand-accent);
            text-align: center;
        }
        h3 {
            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-block: 60px 20px;
            background: var(--grad-hero);
            border-radius: var(--radius-lg);
            text-align: center;
            margin-bottom: 24px;
        }
        .hero-intro {
            max-width: 800px;
            margin: 0 auto 24px;
            padding-inline: 20px;
            color: var(--color-text-secondary);
        }
        .hero-cta {
            display: block;
            width: 100%;
            max-width: 400px;
            margin: 0 auto 24px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            padding-inline: 20px;
        }
        .hero-tag {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid var(--color-border-brand);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.875rem;
            color: var(--color-brand-accent);
        }

        .banner-link {
            display: block;
            width: 100%;
            margin-bottom: 40px;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .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-default);
            padding: 20px;
            border-radius: var(--radius-md);
            text-align: center;
            transition: background 0.3s, border-color 0.3s;
        }
        .category-tile:hover {
            background: var(--color-bg-elevated);
            border-color: var(--color-brand-accent);
        }
        .category-icon {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--color-brand-accent);
        }
        .category-title {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            color: #FFFFFF;
        }
        .category-desc {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
        }

        .games-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;
        }
        .game-card:hover { transform: translateY(-5px); border-color: var(--color-brand-accent); }
        .game-img {
            aspect-ratio: 1 / 1;
            width: 100%;
            object-fit: cover;
        }
        .game-info { padding: 12px; text-align: center; }
        .game-info h3 { margin: 0; font-size: 1rem; }

        .facts-container {
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--color-border-default);
            margin-bottom: 40px;
        }
        .freshness-notice {
            display: block;
            font-style: italic;
            color: var(--color-text-muted);
            font-size: 0.875rem;
            text-align: center;
            margin-bottom: 20px;
        }
        .facts-table {
            width: 100%;
            border-collapse: collapse;
        }
        .facts-row td {
            padding: 12px;
            border-bottom: 1px solid var(--color-border-default);
        }
        .facts-label { color: var(--color-text-secondary); font-weight: 500; width: 40%; }
        .facts-value { color: var(--color-text-primary); text-align: right; }
        .terms-link-wrapper {
            text-align: center;
            margin-top: 16px;
            font-size: 0.875rem;
        }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 12px;
            padding-block: 20px;
            scrollbar-width: none;
            justify-content: center;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--color-bg-surface);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            border: 1px solid var(--color-border-default);
            font-size: 0.875rem;
        }

        .promo-grid { display: flex; flex-direction: column; gap: 20px; }
        .promo-card {
            background: var(--color-bg-surface);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--color-border-default);
            border-left: 4px solid var(--color-brand-accent);
        }

        .usp-grid { display: flex; flex-direction: column; gap: 20px; }
        .usp-item {
            display: flex;
            gap: 20px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            align-items: center;
        }
        .usp-icon { font-size: 1.5rem; color: var(--color-brand-accent); width: 40px; text-align: center; }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .payment-card {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
            text-align: center;
        }
        .payment-icon { font-size: 1.5rem; margin-bottom: 12px; display: block; color: var(--color-brand-accent); }
        .payment-name { display: block; font-weight: 600; margin-bottom: 8px; }
        .payment-desc { font-size: 0.875rem; color: var(--color-text-secondary); }

        .guide-steps { display: flex; flex-direction: column; gap: 24px; }
        .guide-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .step-num {
            min-width: 36px;
            height: 36px;
            background: var(--color-brand-accent);
            color: var(--color-bg-main);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

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

        .player-guide-item {
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            border: 1px solid var(--color-border-default);
        }
        .guide-meta { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: 12px; display: block; }

        .announcement-grid { display: flex; flex-direction: column; gap: 16px; }
        .announcement-card {
            display: flex;
            gap: 16px;
            background: var(--color-bg-surface);
            padding: 20px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-default);
        }
        .announcement-date { font-size: 0.875rem; color: var(--color-text-muted); display: block; margin-top: 8px; }

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

        .about-content {
            background: var(--color-bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-default);
        }
        .team-card {
            margin-top: 24px;
            padding: 20px;
            background: var(--color-bg-elevated);
            border-radius: var(--radius-md);
            border-left: 4px solid var(--color-brand-accent);
        }

        .security-box {
            background: var(--color-bg-surface);
            padding: 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-default);
        }
        .external-links { display: flex; gap: 16px; margin: 20px 0; flex-wrap: wrap; }
        .external-link { background: var(--color-bg-elevated); padding: 8px 16px; border-radius: var(--radius-pill); font-size: 0.875rem; }

        footer {
            margin-top: 60px;
            padding-block: 40px 20px;
            border-top: 1px solid var(--color-border-default);
            text-align: center;
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            max-width: 800px;
            margin: 0 auto 32px;
            text-align: left;
        }
        .footer-contact { margin-bottom: 24px; color: var(--color-text-secondary); }
        .footer-legal { font-size: 0.875rem; color: var(--color-text-muted); line-height: 1.5; }

        .navigator {
            position: fixed;
            inset-inline: 0;
            bottom: 0;
            height: 72px;
            background: var(--color-bg-surface);
            border-top: 1px solid var(--color-border-default);
            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;
            gap: 4px;
            color: var(--color-text-secondary);
            font-size: 0.75rem;
        }
        .nav-item i { font-size: 1.25rem; }
        .nav-item:hover { color: var(--color-brand-accent); }

        .util-link { color: var(--color-brand-accent); text-decoration: underline; }

        @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); }
            .guide-step { flex-direction: row; }
            .navigator { display: none; }
            .footer-sitemap { grid-template-columns: repeat(5, 1fr); }
        }

        @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(4, 1fr); }
        }