:root {
  color-scheme: light dark;
  --bg: #fff;
  --fg: #111;
  --dim: #5c5c5c;
  --line: #d4d4d4;
  --card: #f3f3f3;
  --accent: #0a4fd6;
  --on-accent: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000;
    --fg: #f2f2f2;
    --dim: #9a9a9a;
    --line: #2c2c2c;
    --card: #121212;
    --accent: #7db0ff;
    --on-accent: #000;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: max(24px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(32px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}
.mono, h1, h2, .cmd { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace; }
.cmd { margin: 0 0 1rem; color: var(--dim); }
h1 { margin: 0 0 .5rem; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; }
h2 { margin: 2rem 0 .5rem; font-size: 1.1rem; }
p { margin: 0 0 1rem; }
.lead { font-size: 1.15rem; }
.note { color: var(--dim); }
ol { margin: 0 0 1rem; padding-left: 1.4rem; }
li { margin-bottom: .4rem; }
button {
  min-height: 44px;
  padding: .5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font: inherit;
  font-weight: 600;
}
button.alt { background: transparent; color: var(--accent); }
button:disabled { opacity: .5; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 1.5rem;
  padding: .75rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 10px;
  background: var(--card);
}
.banner p { margin: 0; }
details { margin-top: 1.5rem; }
summary { min-height: 44px; padding: .5rem 0; cursor: pointer; font-weight: 600; }
dl { display: grid; grid-template-columns: minmax(7rem, 11rem) 1fr; gap: .25rem 1rem; margin: 0 0 1rem; font-size: .9rem; }
dt { color: var(--dim); }
dd { margin: 0; overflow-wrap: anywhere; }
.out { min-height: 1.5rem; color: var(--dim); font-size: .9rem; overflow-wrap: anywhere; }
footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }