:root {
            --primary: #2563eb;
            --primary-hover: #1d4ed8;
            --text-main: #0f172a;
            --text-sub: #334155;
            --text-muted: #64748b;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --border: #e2e8f0;
        }
        @media (prefers-color-scheme: dark) {
            :root {
                --primary: #3b82f6;
                --primary-hover: #60a5fa;
                --text-main: #f1f5f9;
                --text-sub: #cbd5e1;
                --text-muted: #94a3b8;
                --bg-page: #0b0f19;
                --bg-card: #151d2f;
                --border: #1e293b;
            }
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.65;
            padding: 0;
        }
        header.site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 800;
            font-size: 1.2rem;
        }
        .nav-links {
            display: flex;
            gap: 1rem;
            align-items: center;
        }
        .nav-link {
            color: var(--text-sub);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 600;
            transition: color 0.15s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        main.container {
            max-width: 860px;
            margin: 2.5rem auto 4rem;
            padding: 0 1.25rem;
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
        }
        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 9999px;
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
        }
        h1 {
            font-size: 1.85rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .subtitle {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 2rem;
            padding-bottom: 1.25rem;
            border-bottom: 1px solid var(--border);
        }
        h2 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 1.8rem 0 0.6rem;
            color: var(--text-main);
        }
        p {
            font-size: 0.95rem;
            color: var(--text-sub);
            margin-bottom: 1rem;
            line-height: 1.75;
        }
        .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: #1d4ed8;
            color: #ffffff;
            font-weight: 600;
            border-radius: 10px;
            text-decoration: none;
            transition: all 0.2s ease;
            margin-top: 2rem;
        }
        .btn-home:hover {
            background: #1e40af;
            transform: translateY(-1px);
        }
        footer {
            text-align: center;
            padding: 2rem 1rem 3rem;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        footer a {
            color: var(--text-muted);
            text-decoration: underline;
            margin: 0 0.5rem;
        }
        footer a:hover {
            color: var(--primary);
        }
    
        /* --- multilingual legal additions --- */
        .lang-bar { display:flex; justify-content:flex-end; align-items:center; gap:.5rem; margin-bottom:1rem; font-size:.85rem; color:var(--text-muted); }
        .lang-bar select { padding:.35rem .6rem; border:1px solid var(--border); border-radius:8px; background:var(--bg-card); color:var(--text-main); font-size:.85rem; }
        .content-card ul { margin:.5rem 0 1rem 1.4rem; color:var(--text-sub); }
        .content-card li { margin-bottom:.4rem; font-size:.95rem; line-height:1.7; }
        .content-card p.note { background:rgba(37,99,235,.05); padding:1rem 1.25rem; border-radius:8px; }
        .content-card a { color:var(--primary); }
        .home-wrap { text-align:center; margin-top:2.5rem; }
        .content-card a.btn-home { color:#fff; }