:root{--fg:#1c2733;--muted:#5b6b7a;--line:#e3e8ee;--accent:#0f5f8a}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;text-decoration:none;color:var(--fg)}
nav a{margin-left:18px;text-decoration:none;color:var(--accent)}
h1{font-size:1.9rem;margin:2rem 0 1rem}
main p{color:var(--muted);max-width:60ch}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:2rem 0}
.card{border:1px solid var(--line);border-radius:10px;padding:18px}
.card h3{margin:0 0 .4rem}
footer{border-top:1px solid var(--line);margin-top:3rem;padding:1.5rem 0;color:var(--muted)}