body{font-family:Arial;margin:0;background:#0b0f17;color:#e5e7eb}
.container{max-width:900px;margin:auto;padding:20px}
.header{background:#111827;padding:20px}
section{margin:30px 0;padding:20px;background:#111827;border-radius:10px}
footer{text-align:center;color:#9ca3af;margin-top:40px}