body { font-family: -apple-system, system-ui, sans-serif; margin: 16px; }
header h1 { margin: 0 0 8px 0; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 12px 0; }
.card { border: 1px solid #ddd; border-radius: 12px; padding: 12px; white-space: pre; }
button { padding: 10px 12px; border-radius: 10px; border: 1px solid #ccc; background: #fff; }
pre { border: 1px solid #ddd; border-radius: 12px; padding: 12px; overflow:auto; }
.cmd input {
  flex: 1;
  min-width: 240px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #ccc;
}
.hint { margin-top: 8px; font-size: 13px; opacity: 0.8; }
code { background: #f4f4f4; padding: 2px 6px; border-radius: 6px; }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }