body{margin:0;font-family:sans-serif;background:#f5f7fb}nav{display:flex;justify-content:space-between;padding:18px 5%;background:#0f2740;color:#fff}nav a{color:#fff;margin-left:18px;text-decoration:none}header{height:70vh;background:linear-gradient(135deg,#2a6fd6,#7ec8ff);display:flex;align-items:center;padding:0 8%;color:#fff}h1{font-size:60px}.btn{background:#fff;color:#1b4da1;padding:14px 24px;border-radius:999px;text-decoration:none;font-weight:bold}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;padding:40px 5%}.cards div{background:#fff;padding:30px;border-radius:16px;box-shadow:0 6px 18px rgba(0,0,0,.1)}img{width:90%;display:block;margin:20px auto;border-radius:12px}