:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #57606a;
  --rule: #d8dee4;
  --accent: #8b5e34;
  --warn-bg: #fff8e6;
  --warn-rule: #e0c66a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a; --fg: #e6edf3; --muted: #9aa4ae; --rule: #30363d;
    --accent: #d8a76a; --warn-bg: #2a2415; --warn-rule: #6b5a24;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 2rem 1.25rem 5rem;
  background: var(--bg); color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", sans-serif;
  line-height: 1.85; font-size: 16px;
}
main { max-width: 46rem; margin: 0 auto; }
h1 { font-size: 1.6rem; line-height: 1.4; margin: 0 0 .25rem; }
h2 { font-size: 1.2rem; margin: 2.5rem 0 .75rem; padding-top: 1rem;
     border-top: 1px solid var(--rule); }
h3 { font-size: 1rem; margin: 1.75rem 0 .5rem; color: var(--accent); }
p, li { margin: .5rem 0; }
ul { padding-left: 1.3rem; }
a { color: var(--accent); }
.lead { color: var(--muted); margin-bottom: 2rem; }
.updated { color: var(--muted); font-size: .9rem; }
.lang { margin: 0 0 2rem; font-size: .9rem; }
.note {
  background: var(--warn-bg); border: 1px solid var(--warn-rule);
  border-radius: 8px; padding: .9rem 1.1rem; margin: 1.25rem 0;
}
.table-wrap { overflow-x: auto; margin: 1rem 0; }
table { border-collapse: collapse; width: 100%; min-width: 32rem; font-size: .95rem; }
th, td { border: 1px solid var(--rule); padding: .55rem .7rem; text-align: left;
         vertical-align: top; }
th { background: color-mix(in srgb, var(--fg) 6%, transparent); font-weight: 600; }
footer { margin-top: 3.5rem; padding-top: 1.25rem; border-top: 1px solid var(--rule);
         color: var(--muted); font-size: .9rem; }