/* Plain and readable: system fonts, one column, wide tables scroll on their own. */
:root {
  --fg: #1a1a1a;
  --bg: #fff;
  --muted: #555;
  --line: #ccc;
  --soft: #f3f3f3;
  --accent: #0b57d0;
  --bad: #b3261e;
  --warn-bg: #fff4ce;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --bg: #161616;
    --muted: #aaa;
    --line: #444;
    --soft: #242424;
    --accent: #8ab4f8;
    --bad: #f2b8b5;
    --warn-bg: #3a3000;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--fg);
  background: var(--bg);
}
.bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; }
.tools { display: flex; gap: 0.5rem; }
main { max-width: 48rem; margin: 0 auto; padding: 1rem; }
main:focus, h2:focus { outline: none; }
h2 { margin-top: 0.5rem; overflow-wrap: anywhere; }
section { margin-top: 2rem; padding-top: 0.5rem; border-top: 1px solid var(--line); }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
button {
  font: inherit;
  min-height: 2.75rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--soft);
  color: var(--fg);
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: progress; }
button.copy { min-height: 2.25rem; padding: 0.2rem 0.7rem; font-size: 0.9rem; }
input {
  font: inherit;
  width: 100%;
  max-width: 32rem;
  min-height: 2.75rem;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
input[type="file"] { padding: 0.5rem 0; border: none; }
.check { display: flex; gap: 0.5rem; align-items: flex-start; }
.check input { flex: none; width: 1.25rem; height: 1.25rem; min-height: 0; margin: 0.15rem 0 0; }
.field { margin: 0 0 1rem; }
.field label { display: block; font-weight: 600; }
.hint { margin: 0 0 0.3rem; color: var(--muted); font-size: 0.95rem; }
fieldset { border: 1px solid var(--line); border-radius: 6px; margin: 0 0 1rem; padding: 0.5rem 1rem; }
legend { font-weight: 600; padding: 0 0.3rem; }
.warn { background: var(--warn-bg); padding: 0.5rem 0.75rem; border-radius: 6px; }
.out:empty { display: none; }
.out { margin-top: 0.75rem; }
.out.error, td.error { color: var(--bad); }
.flash { background: var(--soft); padding: 0.25rem 1rem; border-radius: 6px; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; margin: 0.5rem 0; }
th, td { text-align: left; padding: 0.35rem 0.75rem 0.35rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
td.n { text-align: right; font-variant-numeric: tabular-nums; }
caption { text-align: left; font-weight: 600; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
dl.figures { display: grid; grid-template-columns: max-content 1fr; gap: 0.25rem 1rem; }
dl.figures dt { font-weight: 600; }
dl.figures dd { margin: 0; overflow-wrap: anywhere; }
.addr { display: inline-flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
code, pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.9rem; }
.code { display: flex; gap: 0.5rem; align-items: flex-start; margin: 0.25rem 0 0.75rem; }
.code pre {
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 0.5rem 0.75rem;
  background: var(--soft);
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre;
}
.token pre { white-space: pre-wrap; word-break: break-all; }
details { margin: 0.5rem 0; border: 1px solid var(--line); border-radius: 6px; padding: 0.25rem 0.75rem; }
summary { cursor: pointer; font-weight: 600; min-height: 2.25rem; display: list-item; padding-top: 0.4rem; }
ol { padding-left: 1.25rem; }
details h4 { margin: 1rem 0 0; }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }
li > p { margin: 0.5rem 0 0.25rem; }
@media (max-width: 30rem) {
  dl.figures { grid-template-columns: 1fr; }
  dl.figures dd { margin-bottom: 0.5rem; }
  .code { flex-direction: column; }
  .code pre { width: 100%; }
}