body{font-family:Arial,sans-serif;margin:0;background:#0f172a;color:white}
header{padding:40px;text-align:center;background:#b91c1c}
nav{padding:15px;text-align:center;background:#111827}
nav a{color:white;text-decoration:none;margin:0 12px}
section{padding:30px;max-width:1000px;margin:auto}
.card{background:#1f2937;padding:15px;border-radius:10px;margin:10px 0}
footer{text-align:center;padding:20px;background:#111827}