:root{--bg:#fff;--text:#0f172a;--muted:#475569;--line:#e2e8f0;--brand:#0f766e;--brand2:#115e59;--max:900px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg)}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--max);margin:0 auto;padding:28px 18px}header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:saturate(180%)blur(10px);border-bottom:1px solid var(--line);z-index:10}.top{display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{font-weight:800;letter-spacing:.2px}nav{display:flex;gap:14px;flex-wrap:wrap;align-items:center}nav a{padding:8px 10px;border-radius:10px}nav a:hover{background:#f1f5f9;text-decoration:none}.hero{border:1px solid var(--line);border-radius:18px;padding:18px;background:linear-gradient(180deg,#f8fafc,transparent)}h1{font-size:34px;line-height:1.15;margin:10px 0}h2{margin:28px 0 10px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}.card{grid-column:span 6;border:1px solid var(--line);border-radius:16px;padding:16px;background:#fff}@media(max-width:740px){.card{grid-column:span 12}}.list{list-style:none;margin:0;padding:0}.list li{padding:14px 0;border-bottom:1px solid var(--line)}.meta{font-size:14px;color:var(--muted)}.btn{display:inline-block;padding:10px 14px;border-radius:12px;border:1px solid var(--line);background:#f8fafc}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:var(--brand2);text-decoration:none}footer{border-top:1px solid var(--line);margin-top:34px;padding-top:18px;color:var(--muted);font-size:14px}