body{margin:0;font-family:Arial;background:#020617;color:#e5e7eb}
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center}
.btn{padding:15px 30px;background:#38bdf8;color:#020617;border-radius:30px;display:inline-block}
.card{background:#0f172a;padding:25px;border-radius:18px;margin:10px}