:root {
  --bg: #f6f5f2;
  --card: #ffffff;
  --text: #1d1c1a;
  --muted: #6b6860;
  --line: #e4e1da;
  --accent: #f38020;
  --accent-ink: #ffffff;
  --ok: #1d7a46;
  --err: #b3261e;
  --field: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141311;
    --card: #1d1c19;
    --text: #edeae4;
    --muted: #a19d94;
    --line: #33312c;
    --ok: #5cc28a;
    --err: #ff8a80;
    --field: #161512;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
a { color: var(--accent); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 40px 16px 64px; }
header h1 { font-size: 1.75rem; margin: 0 0 4px; letter-spacing: -0.01em; }
.lead { color: var(--muted); margin: 0 0 24px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}
h2 { font-size: 1.05rem; margin: 0 0 14px; display: flex; align-items: center; gap: 10px; }
.num {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: 0.85rem;
}
label { display: block; margin-bottom: 12px; }
.label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 4px; }
input, select {
  width: 100%; font: inherit; color: inherit;
  background: var(--field); border: 1px solid var(--line); border-radius: 9px;
  padding: 9px 11px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.row { display: flex; gap: 10px; align-items: flex-end; }
.row label { margin-bottom: 0; }
.grow { flex: 1; min-width: 0; }
button, .button {
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
  border-radius: 9px; padding: 9px 16px; border: 1px solid transparent;
  background: var(--accent); color: var(--accent-ink); display: inline-block; white-space: nowrap;
}
button.secondary, .button.secondary { background: transparent; color: var(--text); border-color: var(--line); }
button.primary { width: 100%; padding: 12px; font-size: 1.05rem; margin-top: 8px; }
button.link { background: none; border: 0; padding: 0; color: var(--muted); text-decoration: underline; font-weight: 400; }
button:disabled { opacity: 0.45; cursor: not-allowed; }
.howto { padding-left: 20px; margin: 0 0 14px; }
.howto li { margin-bottom: 10px; }
.howto .hint { display: block; margin-top: 6px; }
.hint { color: var(--muted); font-size: 0.88rem; margin: 10px 0 0; }
.status { margin: 12px 0 0; font-size: 0.95rem; min-height: 1px; }
.status:empty { margin: 0; }
.status.ok { color: var(--ok); }
.status.err, .err { color: var(--err); }
.plan { margin: 0 0 12px; }
.plan .version { font-weight: 600; }
.warn { color: var(--err); }
details { margin: 8px 0 4px; }
summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; margin-bottom: 10px; }
.progress { list-style: none; padding: 0; margin: 14px 0 0; font-size: 0.92rem; color: var(--muted); }
.progress li::before { content: "✓ "; color: var(--ok); }
.progress li:last-child::before { content: "… "; color: var(--muted); }
.progress.done li:last-child::before { content: "✓ "; color: var(--ok); }
.progress.failed li:last-child::before { content: "✕ "; color: var(--err); }
.result { margin-top: 16px; padding: 16px; border-radius: 10px; border: 1px solid var(--line); }
.result.ok { border-color: var(--ok); }
.result.fail { border-color: var(--err); }
.result h3 { margin: 0 0 6px; font-size: 1.05rem; }
.result a.url { font-size: 1.1rem; font-weight: 600; color: var(--accent); word-break: break-all; }
.result p { margin: 6px 0; }
footer { color: var(--muted); font-size: 0.85rem; text-align: center; margin-top: 24px; }
@media (max-width: 480px) {
  .row { flex-direction: column; align-items: stretch; }
}