:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --muted: #666;
  --bg: #fafafa;
  --card: #fff;
  --line: #e5e5e5;
  --ok: #15803d;
  --error: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #ededed;
    --muted: #a1a1a1;
    --bg: #171717;
    --card: #1f1f1f;
    --line: #333;
    --ok: #4ade80;
    --error: #f87171;
  }
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  display: grid;
  place-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 1.5rem;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.7;
}

main { width: 100%; max-width: 32rem; text-align: center; }

h1 { font-size: 1.5rem; margin: 0 0 .25rem; }

.lead { margin: 0 0 2rem; color: var(--muted); }

.status {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .75rem;
  padding: 1.25rem 1.5rem;
}

.status h2 {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--muted);
  margin: 0 0 .75rem;
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .5rem 1.25rem;
  margin: 0;
  font-size: .9rem;
}

dt { color: var(--muted); white-space: nowrap; }

dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

dd[data-state="ok"] { color: var(--ok); }
dd[data-state="error"] { color: var(--error); }

@media (max-width: 30rem) {
  dl { grid-template-columns: 1fr; gap: .15rem; }
  dt { margin-top: .5rem; }
}