:root{
  font-family: Inter, system-ui, Arial, sans-serif;
}
body{background:#f4f6f9;margin:0;padding:40px;}
.container{max-width:800px;margin:0 auto}
h1{text-align:center}
.card{background:white;padding:20px;border-radius:12px;box-shadow:0 6px 20px rgba(24,24,24,0.06);margin:18px 0}
button{padding:10px 14px;border-radius:8px;border:none;cursor:pointer}
.status{margin-top:10px;font-size:0.95rem;color:#333}
@media (max-width:600px){body{padding:16px}}