:root {
            --primary: #006D77;
            --primary-hover: #00838D;
            --secondary: #EDF6F9;
            --accent: #FF6B6B;
            --bg-main: #001A1D;
            --bg-surface: #00262B;
            --bg-elevated: #00333A;
            --text-primary: #E0F2F1;
            --text-secondary: #B2DFDB;
            --text-muted: #80CBC4;
            --text-link: #FF8E8E;
            --text-link-hover: #FFB3B3;
            --btn-bg: #FF6B6B;
            --btn-text: #FFFFFF;
            --btn-hover: #FF8585;
            --border-default: #003D44;
            --border-strong: #005A63;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 8px;
            --radius-pill: 9999px;
            --shadow-card: 4px 4px 0px rgba(0, 0, 0, 0.4);
        }

        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);
        }

        h1, h2, h3 {
            font-family: 'Barlow Condensed', sans-serif;
            letter-spacing: -0.02em;
            line-height: 1.1;
            margin-top: 2rem;
            color: var(--text-primary);
        }

        h1 { font-size: clamp(1.6rem, 6.5vw, 2.4rem); text-align: center; }
        h2 { font-size: clamp(1.3rem, 5.2vw, 1.8rem); border-left: 4px solid var(--accent); padding-left: 12px; }
        h3 { font-size: clamp(1.05rem, 4.2vw, 1.25rem); }

        a { color: var(--text-link); text-decoration: none; transition: color 0.2s; }
        a:hover { color: var(--text-link-hover); }

        img { max-width: 100%; height: auto; display: block; }

        .btn-base {
            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;
            transition: transform 0.1s, background-color 0.2s;
            border: none;
            text-align: center;
        }
        .btn-primary { background: linear-gradient(to bottom, #FF6B6B 0%, #EE5253 100%); color: var(--btn-text); }
        .btn-primary:hover { background: var(--btn-hover); transform: translateY(-2px); }
        .btn-outline { border: 2px solid var(--accent); color: var(--accent); background: transparent; }
        .btn-outline:hover { background: var(--accent); color: var(--btn-text); }

        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            max-width: 1200px;
            margin: 0 auto;
        }
        .header-brand { display: flex; align-items: center; gap: 8px; }
        .header-brand strong { font-size: 16px; font-weight: normal; }

        .hero-section { text-align: center; padding: 2rem 0; }
        .hero-intro { max-width: 800px; margin: 1rem auto 2rem; color: var(--text-secondary); }
        .hero-cta { width: 100%; margin-bottom: 1.5rem; font-size: 1.2rem; }
        .hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
        .hero-tag {
            background: var(--bg-elevated);
            color: var(--text-muted);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            border: 1px solid var(--border-default);
        }

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

        .cat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 2rem 0;
        }
        .cat-tile {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
            transition: border-color 0.2s;
        }
        .cat-tile:hover { border-color: var(--accent); }
        .cat-tile i { font-size: 2rem; color: var(--accent); margin-bottom: 0.5rem; }
        .cat-tile-name { display: block; font-weight: bold; margin-bottom: 0.5rem; color: var(--text-primary); }
        .cat-tile-desc { font-size: 0.85rem; color: var(--text-muted); display: block; }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin: 1.5rem 0;
        }
        .game-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-default);
            text-decoration: none;
        }
        .game-card img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
        .game-card h3 { margin: 0; padding: 12px; font-size: 1rem; text-align: center; color: var(--text-primary); }

        .facts-container { background: var(--bg-surface); border-radius: var(--radius-lg); padding: 1.5rem; margin: 1.5rem 0; border: 1px solid var(--border-strong); }
        .freshness-notice { font-style: italic; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1rem; display: block; }
        .facts-table { width: 100%; border-collapse: collapse; }
        .facts-table td { padding: 12px; border-bottom: 1px solid var(--border-default); }
        .facts-label { font-weight: 600; color: var(--text-muted); width: 40%; }
        .facts-value { color: var(--text-primary); }
        .terms-link { display: block; margin-top: 1rem; font-size: 0.85rem; text-align: center; }

        .toc-nav {
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 1rem 0;
            margin-bottom: 2rem;
            scrollbar-width: none;
        }
        .toc-nav::-webkit-scrollbar { display: none; }
        .toc-link {
            background: var(--bg-elevated);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            white-space: nowrap;
            font-size: 0.9rem;
            color: var(--text-primary);
            border: 1px solid var(--border-default);
        }

        .promo-list { display: flex; flex-direction: column; gap: 16px; margin: 1.5rem 0; }
        .promo-card { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); border-left: 4px solid var(--accent); }
        .promo-card h3 { margin-top: 0; color: var(--accent); }

        .usp-grid { display: flex; flex-direction: column; gap: 12px; margin: 1.5rem 0; }
        .usp-tile {
            background: var(--bg-surface);
            padding: 1rem;
            border-radius: var(--radius-lg);
            display: flex;
            gap: 15px;
            align-items: center;
            border: 1px solid var(--border-default);
        }
        .usp-tile i { font-size: 1.5rem; color: var(--accent); width: 30px; text-align: center; }
        .usp-content strong { display: block; color: var(--text-primary); }
        .usp-content span { font-size: 0.85rem; color: var(--text-muted); }

        .payment-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin: 1.5rem 0;
        }
        .payment-card {
            background: var(--bg-surface);
            padding: 1rem;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border-default);
        }
        .payment-card i { font-size: 1.5rem; color: var(--accent); margin-bottom: 0.5rem; }
        .payment-card strong { display: block; margin-bottom: 0.5rem; }
        .payment-card p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

        .guide-steps { display: flex; flex-direction: column; gap: 20px; margin: 1.5rem 0; }
        .guide-step { display: flex; gap: 15px; align-items: flex-start; }
        .step-number {
            background: var(--accent);
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            flex-shrink: 0;
        }
        .guide-step h3 { margin-top: 0; }
        .guide-step a { color: inherit; }

        .download-box {
            background: linear-gradient(var(--bg-surface), var(--bg-elevated));
            padding: 2rem;
            border-radius: var(--radius-lg);
            text-align: center;
            margin: 1.5rem 0;
            border: 1px solid var(--border-strong);
        }

        .player-guide-item {
            background: var(--bg-surface);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            margin-bottom: 1rem;
            border: 1px solid var(--border-default);
        }
        .meta-text { font-size: 0.8rem; color: var(--text-muted); display: block; margin-bottom: 0.5rem; }

        .announcement-list { display: flex; flex-direction: column; gap: 12px; margin: 1.5rem 0; }
        .announcement-item {
            background: var(--bg-surface);
            padding: 1rem;
            border-radius: var(--radius-lg);
            display: flex;
            gap: 12px;
            border: 1px solid var(--border-default);
        }
        .announcement-item i { color: var(--accent); margin-top: 4px; }
        .announcement-date { font-size: 0.8rem; color: var(--text-muted); display: block; margin-top: 4px; }

        .faq-item { background: var(--bg-surface); margin-bottom: 12px; border-radius: var(--radius-lg); border: 1px solid var(--border-default); }
        .faq-item summary { padding: 1rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
        .faq-item summary h3 { margin: 0; font-size: 1.1rem; }
        .faq-answer { padding: 0 1rem 1rem 1rem; color: var(--text-secondary); border-top: 1px solid var(--border-default); padding-top: 1rem; }

        .about-content { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); margin: 1.5rem 0; }
        .team-card {
            background: var(--bg-elevated);
            padding: 1rem;
            border-radius: var(--radius-lg);
            margin-top: 1.5rem;
            border: 1px solid var(--border-strong);
        }

        .security-box { background: var(--bg-surface); padding: 1.5rem; border-radius: var(--radius-lg); margin: 1.5rem 0; }
        .security-links { display: flex; gap: 10px; flex-wrap: wrap; margin: 1rem 0; }
        .security-link { background: var(--bg-elevated); padding: 6px 12px; border-radius: var(--radius-sm); font-size: 0.85rem; }

        footer {
            background: var(--bg-surface);
            padding: 2rem 0;
            margin-top: 3rem;
            border-top: 2px solid var(--border-default);
        }
        .footer-sitemap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            text-align: center;
            margin-bottom: 2rem;
        }
        .footer-contact { text-align: center; margin-bottom: 1.5rem; font-size: 0.9rem; }
        .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);
            display: flex;
            justify-content: space-around;
            align-items: center;
            padding-bottom: env(safe-area-inset-bottom);
            border-top: 1px solid var(--border-strong);
            z-index: 100;
        }
        .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; }

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

        section { content-visibility: auto; contain-intrinsic-size: 1px 500px; }

        @media (min-width: 768px) {
            body { padding-inline: 24px; padding-bottom: 24px; }
            .cat-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; height: auto; padding: 0; display: none; }
            footer { padding-bottom: 24px; }
        }

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