:root {
  --bg: #ffffff;
  --fg: #1d2433;
  --muted: #5b6475;
  --line: #dde2ea;
  --link: #1a56db;
  --bar: #f5f7fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c;
    --fg: #e6e9ef;
    --muted: #9aa3b2;
    --line: #2c3340;
    --link: #7aa7ff;
    --bar: #1a1e27;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Arabic", "Noto Sans Devanagari",
    "Noto Sans Thai", "Noto Sans CJK SC", "Noto Sans JP", "Noto Sans KR", Arial, sans-serif;
  line-height: 1.6;
}
.bar {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bar);
  border-bottom: 1px solid var(--line);
}
.home { font-weight: 600; text-decoration: none; color: var(--fg); }
.lang { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .9em; }
.lang select {
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  max-width: 60vw;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 1.6em; margin: 0 0 4px; }
h2 { font-size: 1.2em; margin-top: 1.8em; }
.meta { color: var(--muted); font-size: .9em; }
table { border-collapse: collapse; width: 100%; font-size: .95em; }
th, td { border: 1px solid var(--line); padding: 6px 8px; text-align: start; vertical-align: top; }
a { color: var(--link); word-break: break-word; }
code { font-size: .9em; }
.links li { margin: 6px 0; }