body{font-family:Arial,sans-serif;max-width:900px;margin:auto;padding:40px;background:#f8f9fb;color:#222}
header{background:#1f5eff;color:#fff;padding:30px;border-radius:12px}
h1,h2{margin-top:0}.btn{display:inline-block;background:#ff8a00;color:#fff;padding:12px 20px;
text-decoration:none;border-radius:8px;font-weight:bold}.card{background:#fff;padding:20px;border-radius:10px;
margin:20px 0;box-shadow:0 2px 8px rgba(0,0,0,.08)}footer{margin-top:40px;color:#666}