body{margin:0;font-family:Arial,sans-serif;background:#0f172a;color:#f8fafc}
.container{max-width:900px;margin:auto;padding:40px}
a.button{display:inline-block;padding:12px 18px;margin:8px;background:#2563eb;color:#fff;text-decoration:none;border-radius:8px}
.card{background:#1e293b;padding:24px;border-radius:12px;margin:20px 0}
footer{margin-top:40px;color:#94a3b8;font-size:.9rem}