:root {
  --text: #1b1f24;
  --muted: #57606a;
  --background: #ffffff;
  --surface: #f6f8fa;
  --border: #d0d7de;
  --link: #0b5fbd;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #e6edf3;
    --muted: #9da7b3;
    --background: #0d1117;
    --surface: #161b22;
    --border: #30363d;
    --link: #6cb6ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header { border-bottom: 1px solid var(--border); }
.bar, main, footer { max-width: 52rem; margin: 0 auto; padding: 0 1rem; }
.bar { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem 1.5rem; padding-top: 0.9rem; padding-bottom: 0.9rem; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; }
header nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.1rem; }
header nav a { color: var(--muted); text-decoration: none; }
header nav a:hover, header nav a[aria-current="page"] { color: var(--text); text-decoration: underline; }
main { padding-top: 1.5rem; padding-bottom: 3rem; }
h1, h2, h3, h4 { line-height: 1.25; margin: 2rem 0 0.75rem; }
h1 { font-size: 2rem; margin-top: 0.5rem; }
h2 { font-size: 1.45rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }
h3 { font-size: 1.15rem; }
p, ul, ol, pre, blockquote, .table { margin: 0 0 1rem; }
li > p { margin-bottom: 0.5rem; }
li > pre, li > .table { margin-top: 0.5rem; }
a { color: var(--link); }
code {
  font: 0.9em/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--surface);
  border-radius: 4px;
  padding: 0.1em 0.3em;
  overflow-wrap: anywhere;
}
pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  overflow-x: auto;
}
pre code { background: none; padding: 0; overflow-wrap: normal; }
.table { overflow-x: auto; }
table { border-collapse: collapse; font-size: 0.95em; }
th, td { border: 1px solid var(--border); padding: 0.4rem 0.6rem; text-align: left; vertical-align: top; }
th { background: var(--surface); }
blockquote { border-left: 3px solid var(--border); margin-left: 0; padding-left: 1rem; color: var(--muted); }
hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }
.contents { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 0.8rem 1rem; margin-bottom: 1.5rem; }
.contents p { margin: 0 0 0.4rem; font-weight: 600; }
.contents ul { margin: 0; padding-left: 1.2rem; }
footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; padding-top: 1rem; padding-bottom: 2rem; }