:root {
  --bg: #f6f4ee;
  --fg: #1f2a24;
  --muted: #5c6b62;
  --card: #ffffff;
  --line: #d8d3c4;
  --accent: #2e5d45;
  --ok: #1f6f43;
  --warn: #8a5a00;
  --err: #a12a2a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141a17;
    --fg: #e8e6df;
    --muted: #a3ada6;
    --card: #1d2420;
    --line: #34403a;
    --accent: #7fbf9a;
    --ok: #7fd1a1;
    --warn: #e6b45c;
    --err: #f08a8a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0 16px 32px;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  max-width: 760px;
  margin-inline: auto;
}
h1 { font-size: 1.4rem; margin: 20px 0 6px; }
h2 { font-size: 1.1rem; margin: 0 0 8px; }
h3 { font-size: 0.95rem; margin: 14px 0 6px; color: var(--muted); }
.lead, .hint { color: var(--muted); font-size: 0.92rem; }
section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  margin: 12px 0;
}
textarea, input[type="text"] {
  width: 100%;
  font: 13px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
.row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; align-items: center; }
button {
  font: inherit;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--card);
}
button:disabled { opacity: 0.4; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 10px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
ol, ul { padding-left: 20px; margin: 0; }
li { margin: 4px 0; overflow-wrap: anywhere; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.ok { color: var(--ok); }
.warning { color: var(--warn); }
.error { color: var(--err); }
.msg { min-height: 1.2em; overflow-wrap: anywhere; }
footer { color: var(--muted); font-size: 0.85rem; text-align: center; margin-top: 20px; }