body{margin:0;font-family:Arial,sans-serif;background:#eef8ff}header{background:#0077b6;color:#fff;padding:15px;display:flex;justify-content:space-between;align-items:center}nav a{color:#fff;text-decoration:none;margin:0 10px}.hero{text-align:center;padding:80px 20px;background:linear-gradient(#0096c7,#48cae4);color:#fff}.btn{display:inline-block;background:#fff;color:#0077b6;padding:12px 20px;border-radius:8px;text-decoration:none;font-weight:bold}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;padding:30px} .cards div{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px #0002}footer{text-align:center;padding:20px;background:#023e8a;color:#fff}