body {font-family: Arial, sans-serif; margin:0; background:#0f172a; color:#fff;}
header, footer {padding:20px; background:#020617; text-align:center;}
nav a {margin:0 10px; color:#38bdf8; text-decoration:none;}
.hero {padding:80px 20px; text-align:center;}
.section {padding:40px 20px;}
.card {background:#020617; padding:20px; margin:10px; border-radius:10px;}
.button {background:#38bdf8; color:#000; padding:10px 20px; border:none; border-radius:5px; cursor:pointer;}
.container {max-width:1000px; margin:auto;}