:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}
body { margin: 0; }
main { max-width: 720px; margin: 2rem auto; padding: 0 1rem; }
h1 { margin-top: 0; }
.card {
  border: 1px solid color-mix(in srgb, currentColor 20%, transparent);
  border-radius: 8px;
  padding: 1rem;
  margin: 1rem 0;
}
.card h2 { margin: 0 0 0.5rem 0; font-size: 1.1rem; }
label { display: block; margin: 0.5rem 0; }
input { width: 100%; padding: 0.5rem; box-sizing: border-box; }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
button {
  padding: 0.6rem 1rem;
  border: 1px solid currentColor;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  color: inherit;
}
button:hover { background: color-mix(in srgb, currentColor 10%, transparent); }
pre {
  background: color-mix(in srgb, currentColor 8%, transparent);
  padding: 0.75rem;
  border-radius: 6px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 320px;
  overflow: auto;
}
code { font-size: 0.9rem; }