body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,sans-serif;color:#1f2937;background:#f8fafc}
.w{max-width:860px;margin:0 auto;padding:0 20px}header{background:#fff;border-bottom:1px solid #e5e7eb}header .w{display:flex;justify-content:space-between;align-items:center;height:56px}
nav a{margin-left:20px;color:#2563eb;text-decoration:none}h1{font-size:28px;margin:32px 0 12px}h2{font-size:18px;margin:24px 0 6px}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}.card{display:block;background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:16px;color:inherit;text-decoration:none}
.card h2{margin:0 0 6px}footer{margin-top:48px;padding:20px 0;color:#6b7280;font-size:14px}@media(max-width:600px){.cards{grid-template-columns:1fr}}