body{font-family:Arial,sans-serif;margin:0;background:#f5f5f5;color:#222;line-height:1.6}
header{background:#0d6efd;color:#fff;padding:60px 20px;text-align:center}
.btn{display:inline-block;background:#fff;color:#0d6efd;padding:12px 18px;text-decoration:none;border-radius:6px}
section{max-width:1000px;margin:auto;padding:40px 20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{background:#fff;padding:20px;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
footer{text-align:center;padding:30px;background:#222;color:#fff}