body{margin:0;font-family:Arial,sans-serif;background:#f5f7fa;color:#222}
header{background:linear-gradient(135deg,#0b7a31,#16c45b);color:#fff;padding:60px 20px;text-align:center}
nav{background:#111;padding:15px;text-align:center}
nav a{color:#fff;text-decoration:none;margin:0 12px}
.container{max-width:1100px;margin:auto;padding:30px 20px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.card{background:#fff;padding:20px;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.1)}
footer{background:#111;color:#fff;text-align:center;padding:20px;margin-top:30px}
.btn{display:inline-block;background:#16c45b;color:#fff;padding:10px 18px;border-radius:8px;text-decoration:none}