body{font-family:Arial,sans-serif;margin:0;color:#123}
.hero{background:linear-gradient(#0d6efd,#53b8ff);color:#fff;padding:60px 20px;text-align:center}
.btn{display:inline-block;background:#25D366;color:#fff;padding:12px 20px;text-decoration:none;border-radius:8px}
section{padding:30px 20px;max-width:1000px;margin:auto}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}
.card{border:1px solid #ddd;border-radius:10px;padding:20px;text-align:center}
footer{text-align:center;padding:20px;background:#f3f3f3}