body{margin:0;font-family:Arial,sans-serif;background:#07111f;color:#fff}
header{background:#081a2f;padding:15px 40px;display:flex;justify-content:space-between;align-items:center}
nav a{color:#fff;text-decoration:none;margin:0 12px}
.hero{padding:120px 50px;background:linear-gradient(135deg,#0b2340,#0f4c81)}
.section{padding:60px 50px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{background:#10243d;padding:25px;border-radius:10px}
footer{background:#081a2f;padding:20px;text-align:center}
h1,h2{margin-top:0}