:root {
  --bg: #f1f1f1;
  --card: #ffffff;
  --ink: #303030;
  --muted: #616161;
  --line: #e3e3e3;
  --accent: #0f766e;
  --accent-ink: #ffffff;
  --on: #0c5132;
  --on-bg: #cdfee1;
  --off: #8e1f0b;
  --off-bg: #fee9e8;
  --warn-bg: #fff1e3;
  --warn: #5e4200;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --card: #262626;
    --ink: #e3e3e3;
    --muted: #a8a8a8;
    --line: #3a3a3a;
    --accent: #2bb3a5;
    --accent-ink: #0b1f1d;
    --on: #b4fed2;
    --on-bg: #0c3a24;
    --off: #fed1d7;
    --off-bg: #4a1a14;
    --warn-bg: #3d2b0a;
    --warn: #ffd6a4;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; }
.wrap { max-width: 860px; margin: 0 auto; padding: 20px 16px 40px; display: grid; gap: 16px; }
h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 6px; }
h3 { font-size: 14px; margin: 0 0 4px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05); }
.row, .step { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.step + .step { border-top: 1px solid var(--line); margin-top: 12px; padding-top: 12px; }
.step > div:first-child, .row > div:first-child { flex: 1 1 320px; min-width: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.label { display: block; font-weight: 600; margin-bottom: 4px; }
textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); font: 13px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; resize: vertical; margin-bottom: 10px; }
textarea:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn { appearance: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 8px; padding: 6px 12px; font: inherit; font-weight: 600; cursor: pointer; min-height: 32px; }
.btn:hover { filter: brightness(0.97); }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-danger { color: var(--off); }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.is-on { background: var(--on-bg); color: var(--on); }
.badge.is-off { background: var(--off-bg); color: var(--off); }
.badge.is-unknown { background: var(--warn-bg); color: var(--warn); }
.note { margin: 0; padding: 10px 12px; border-radius: 8px; }
.note.is-ok { background: var(--on-bg); color: var(--on); }
.note.is-error { background: var(--off-bg); color: var(--off); }
code { font-size: 12px; }
.foot { text-align: center; }