:root {
  --bg: #ffffff; --bg2: #f6f8fa; --fg: #1f2328; --muted: #59636e;
  --border: #d1d9e0; --accent: #0b5cad; --accent2: #e7f0fa;
  --code-bg: #f6f8fa; --sidebar-w: 300px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --bg2: #161b22; --fg: #e6edf3; --muted: #9198a1;
    --border: #30363d; --accent: #58a6ff; --accent2: #0d2540;
    --code-bg: #161b22;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--fg); background: var(--bg); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

#sidebar {
  position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-w);
  overflow-y: auto; background: var(--bg2); border-right: 1px solid var(--border);
  padding: 16px 12px 40px; font-size: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; color: var(--fg); margin-bottom: 14px; }
.brand .logo { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 7px; background: var(--accent); color: #fff; font-size: 17px; flex-shrink: 0; }
.nav-group { margin: 18px 4px 6px; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
#sidebar details { margin: 2px 0; }
#sidebar summary { cursor: pointer; padding: 4px 6px; border-radius: 6px; font-weight: 600; }
#sidebar summary:hover { background: var(--accent2); }
#sidebar ul { list-style: none; margin: 2px 0 6px; padding-left: 14px; border-left: 1px solid var(--border); }
#sidebar li { margin: 1px 0; }
#sidebar li a { display: block; padding: 2px 8px; border-radius: 6px; color: var(--fg); }
#sidebar li a:hover { background: var(--accent2); text-decoration: none; }
#sidebar li.current > a { background: var(--accent2); color: var(--accent); font-weight: 600; }

.search-box { position: relative; margin-bottom: 8px; }
#search { width: 100%; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--fg); font-size: 14px; }
#search-results { position: absolute; z-index: 50; left: 0; right: 0; top: 38px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.25); max-height: 340px; overflow-y: auto; display: none; }
#search-results.open { display: block; }
#search-results a { display: block; padding: 8px 10px; border-bottom: 1px solid var(--border); color: var(--fg); }
#search-results a:last-child { border-bottom: none; }
#search-results a:hover { background: var(--accent2); text-decoration: none; }
#search-results .r-title { font-weight: 600; }
#search-results .r-sec { font-size: 12px; color: var(--muted); }

main { margin-left: var(--sidebar-w); padding: 28px 48px 60px; max-width: 980px; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 14px; }
h2 { font-size: 22px; margin: 34px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
h3 { font-size: 18px; margin: 28px 0 8px; }
h4 { font-size: 15.5px; margin: 22px 0 6px; }
p { margin: 10px 0; }
ul, ol { margin: 8px 0; padding-left: 26px; }
li { margin: 3px 0; }
code { background: var(--code-bg); border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; font: 13px/1.5 "SF Mono", SFMono-Regular, ui-monospace, Menlo, Consolas, monospace; }
pre.code { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; overflow-x: auto; }
pre.code code { background: none; border: none; padding: 0; font-size: 13px; }
pre.ascii code { font-size: 12.5px; line-height: 1.35; }

.purpose { background: var(--accent2); border-left: 4px solid var(--accent); border-radius: 0 8px 8px 0; padding: 12px 16px; margin: 0 0 18px; }
.audience h3, .quicknav h3, .related h3 { margin-top: 26px; }

.tbl { overflow-x: auto; margin: 12px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { border: 1px solid var(--border); padding: 7px 11px; text-align: left; vertical-align: top; }
th { background: var(--bg2); }
tr:nth-child(even) td { background: color-mix(in srgb, var(--bg2) 55%, var(--bg)); }

.qn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.qn { display: block; border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; color: var(--fg); font-weight: 600; font-size: 14px; }
.qn span { display: block; font-size: 11.5px; font-weight: 500; color: var(--muted); margin-bottom: 2px; }
.qn:hover { border-color: var(--accent); text-decoration: none; }

.related ul { list-style: none; padding-left: 0; }
.related li { padding: 4px 0; border-bottom: 1px dashed var(--border); }
.crumb { font-size: 12.5px; color: var(--muted); }

.home .lede { font-size: 18px; color: var(--muted); }
.home-top { display: flex; gap: 28px; align-items: flex-start; margin-bottom: 8px; }
.home-intro { flex: 1 1 auto; min-width: 0; }
.bio-card {
  flex: 0 0 280px; border: 1px solid var(--border); border-radius: 14px;
  background: linear-gradient(180deg, var(--accent2), var(--bg2));
  padding: 24px 22px 20px; text-align: center;
}
.bio-avatar {
  width: 96px; height: 96px; margin: 0 auto 12px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 32px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; letter-spacing: .02em;
}
img.bio-photo { object-fit: cover; display: block; border: 3px solid var(--accent); box-shadow: 0 4px 14px rgba(0,0,0,.18); }
.bio-card h3 { margin: 0 0 2px; font-size: 18px; }
.bio-role { margin: 0 0 12px; font-size: 12.5px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--accent); }
.bio-text { margin: 0; font-size: 14px; color: var(--muted); text-align: left; }
@media (max-width: 900px) {
  .home-top { flex-direction: column; }
  .bio-card { flex: none; width: 100%; }
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin: 14px 0 8px; }
.card { border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; color: var(--fg); background: var(--bg2); position: relative; }
.card:hover { border-color: var(--accent); text-decoration: none; }
.card h3 { margin: 0 0 6px; font-size: 16.5px; color: var(--accent); }
.card p { margin: 0 0 10px; font-size: 13.5px; color: var(--muted); }
.card .count { font-size: 12px; color: var(--muted); }

footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); }
.hits { float: right; font-size: 11px; opacity: .55; }

#menu-toggle { display: none; position: fixed; z-index: 100; top: 12px; left: 12px; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg2); color: var(--fg); font-size: 18px; cursor: pointer; }
@media (max-width: 900px) {
  #menu-toggle { display: block; }
  #sidebar { transform: translateX(-100%); transition: transform .2s; z-index: 90; width: 82vw; max-width: 340px; }
  #sidebar.open { transform: none; box-shadow: 0 0 40px rgba(0,0,0,.4); }
  main { margin-left: 0; padding: 64px 20px 60px; }
}