body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.7;color:#0f172a;margin:0}
    .container{max-width:920px;margin:0 auto;padding:24px}
    h1{font-size:2rem;margin:16px 0 12px}
    h2{font-size:1.375rem;margin:28px 0 12px}
    h3{font-size:1.125rem;margin:20px 0 8px}
    .toc{background:#f8fafc;padding:16px;border-radius:12px;border:1px solid #e2e8f0}
    .toc a{display:block;text-decoration:none;color:#0ea5e9;margin:6px 0}
    table{width:100%;border-collapse:collapse;margin:16px 0}
    th,td{border:1px solid #e2e8f0;padding:10px;vertical-align:top}
    th{background:#f1f5f9;text-align:left}
    .note{background:#fff7ed;border:1px solid #fed7aa;padding:12px;border-radius:10px}
    .grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
    .cta{background:#0ea5e9;color:#fff;padding:14px 18px;border-radius:10px;text-decoration:none;display:inline-block;margin-top:8px}