body{margin:0;font-family:Arial,sans-serif;color:#333}
.hero{background:linear-gradient(135deg,#0B1F3A,#1565C0);color:#fff;padding:120px 20px;text-align:center}
.container{max-width:1200px;margin:auto;padding:60px 20px}
.btn{background:#00B8D4;color:#fff;padding:12px 24px;text-decoration:none;border-radius:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{padding:24px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.1);background:#fff}
.dark{background:#f4f7fb}
footer{background:#0B1F3A;color:#fff;text-align:center;padding:30px}