body {font-family:Arial;margin:0;background:#0f172a;color:white;}
.nav {display:flex;justify-content:space-between;padding:15px;background:#020617;}
.nav ul {display:flex;gap:15px;list-style:none;}
.nav a {color:white;text-decoration:none;}
.hero {padding:100px 20px;text-align:center;background:#064e3b;}
.btn {background:#22c55e;padding:10px 20px;border-radius:5px;}
.section {padding:40px;text-align:center;}
.grid {display:flex;gap:20px;justify-content:center;}
.card {background:#1e293b;padding:20px;border-radius:10px;}
footer {text-align:center;padding:20px;background:#020617;}