:root {
  --bg: #ffffff;
  --fg: #18202c;
  --muted: #5a6474;
  --line: #dde2ea;
  --card: #f6f8fb;
  --accent: #1d5bb0;
  --warm: #e8912d;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161e;
    --fg: #e6eaf0;
    --muted: #9aa4b2;
    --line: #2a3340;
    --card: #19202a;
    --accent: #6ea2ec;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); }
main, .top, footer { max-width: 960px; margin: 0 auto; padding: 0 16px; }
main.narrow { max-width: 720px; }
.top { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 8px; align-items: center; font-weight: 600; color: var(--fg); text-decoration: none; }
.gh { font-size: 14px; }
.hero h1 { font-size: clamp(26px, 5vw, 38px); line-height: 1.15; margin: 32px 0 8px; }
.lede { color: var(--muted); max-width: 640px; margin: 0 0 20px; }
.picker { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: end; }
.picker label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 14px; }
.picker input {
  font: inherit; font-weight: 400; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--card); color: var(--fg); width: 100%;
}
.picker input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
#swap { font-size: 20px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); cursor: pointer; }
#result h2 { font-size: 20px; margin: 28px 0 6px; }
#result em { font-style: normal; color: var(--accent); }
.defs { color: var(--muted); font-size: 14px; }
.note { background: var(--card); border-left: 3px solid var(--warm); padding: 8px 12px; border-radius: 4px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0 0 8px; }
.ex { margin: 0; padding-left: 18px; font-size: 14px; color: var(--muted); }
.num { color: var(--warm); font-variant-numeric: tabular-nums; }
.cta { margin: 36px 0; padding: 18px 20px; border: 1px solid var(--accent); border-radius: 12px; }
.cta h2 { margin-top: 0; font-size: 20px; }
pre { background: var(--card); padding: 10px 12px; border-radius: 8px; overflow-x: auto; font-size: 14px; }
.small { font-size: 14px; color: var(--muted); }
.plist { columns: 2 260px; padding-left: 28px; }
.plist li { break-inside: avoid; margin-bottom: 2px; }
.about { color: var(--muted); font-size: 15px; }
.crumb { font-size: 14px; color: var(--muted); margin-top: 24px; }
.aliases { color: var(--muted); }
.examples dt { font-weight: 600; margin-top: 8px; }
.examples dd { margin: 2px 0 0; }
.pager { display: flex; justify-content: space-between; margin: 32px 0; gap: 12px; }
footer { color: var(--muted); font-size: 14px; padding-top: 24px; padding-bottom: 32px; border-top: 1px solid var(--line); margin-top: 32px; }
@media (max-width: 600px) {
  .picker { grid-template-columns: 1fr; }
  #swap { justify-self: start; }
}