body{font-family:Arial;margin:0;background:#f4f6f9;}
nav{background:#0b1f3a;padding:15px;color:white;display:flex;justify-content:space-between;}
nav a{color:white;margin-left:15px;text-decoration:none;}
.hero{background:#162f57;color:white;padding:120px 20px;text-align:center;}
section{padding:60px 20px;max-width:1200px;margin:auto;}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;}
.card{background:white;padding:20px;border-radius:10px;box-shadow:0 10px 20px rgba(0,0,0,.1);}
footer{background:#0b1f3a;color:white;text-align:center;padding:20px;}