html, body { background: #fff; }
body {
  font-family: ui-sans-serif, system-ui, sans-serif;
  max-width: 880px;
  margin: 2rem auto;
  padding: 0 1.25rem;
  color: #1a1a1a;
}
h1 { font-size: 1.6rem; margin-bottom: 0.25rem; }
p.lead { color: #555; margin-top: 0; }
label { display: block; margin: 1rem 0 0.35rem; font-weight: 600; font-size: 13px; }
textarea {
  width: 100%;
  box-sizing: border-box;
  min-height: 180px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 13px;
  padding: 0.6rem 0.8rem;
  border: 1px solid #bbb;
  border-radius: 4px;
}
.row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin: 0.85rem 0 0.4rem;
}
button {
  background: #b3502a;
  color: #fff;
  border: 0;
  border-radius: 4px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}
button:hover { background: #94411f; }
button.ghost { background: transparent; color: #b3502a; border: 1px solid #b3502a; }
.hint { color: #777; font-size: 12px; }
label.opt {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  font-weight: 400;
  font-size: 13px;
  color: #444;
}
.err { color: #b00020; font-size: 13px; min-height: 1.2em; margin-top: 0.4rem; }
footer {
  margin-top: 2.5rem;
  color: #777;
  font-size: 12px;
  border-top: 1px solid #eee;
  padding-top: 1rem;
}