body{margin:0;font-family:Arial;background:#0b0f1a;color:#e5e7eb}
header{padding:20px;background:#0f172a}
nav a{color:#c7d2fe;margin-right:15px;text-decoration:none}
.hero{text-align:center;padding:80px}
.btn{background:#6366f1;color:white;border:none;padding:12px 25px;border-radius:5px}
.content{padding:40px}