body{margin:0;font-family:Arial,sans-serif;background:#f5f8fc;color:#18324a}
header{display:flex;justify-content:space-between;align-items:center;padding:20px 40px;background:#0f2742;color:#fff}
nav a{color:#fff;margin-left:20px;text-decoration:none}
.hero{padding:90px 20px;text-align:center;background:linear-gradient(#18324a,#5db6ff);color:#fff}
.btn{display:inline-block;padding:12px 22px;background:#fff;color:#18324a;text-decoration:none;border-radius:8px;font-weight:bold}
section{padding:50px 20px;max-width:1100px;margin:auto}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.card{background:#fff;padding:20px;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
footer{text-align:center;padding:25px;background:#0f2742;color:#fff}