:root {
  --ink: #1f2933;
  --muted: #5b6775;
  --line: #d9dee7;
  --bg: #f4f6f8;
  --card: #ffffff;
  --brand: #1c2833;
  --accent: #1a5fb4;
  --ok: #1e7a46;
  --warn: #9a6700;
  --bad: #b42318;
  --note: #eef4ff;
  --note-border: #b6d0f5;
  --warn-bg: #fff8e6;
  --warn-border: #e6c56a;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font: 16px/1.55 "Segoe UI", system-ui, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.site-header {
  background: var(--brand);
  color: #fff;
  padding: 14px 0;
}
.site-header .wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}
.brand { color: #fff; text-decoration: none; font-weight: 650; font-size: 18px; }
.ver { color: #c5ced6; font-size: 13px; }
.layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 28px;
  padding: 28px 20px 64px;
}
.side {
  position: sticky;
  top: 16px;
  align-self: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 12px;
}
.side a {
  display: block;
  text-decoration: none;
  color: var(--ink);
  padding: 6px 8px;
  border-radius: 5px;
  font-size: 14px;
}
.side a:hover, .side a.active { background: var(--note); color: var(--accent); }
.side .group { margin: 12px 8px 6px; font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
main { min-width: 0; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 28px 0 10px; padding-top: 8px; }
h3 { font-size: 16px; margin: 20px 0 8px; }
.lede { color: var(--muted); margin: 0 0 18px; font-size: 17px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  margin: 0 0 16px;
}
figure {
  margin: 16px 0 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
figure img {
  display: block;
  width: 100%;
  height: auto;
}
figcaption {
  padding: 10px 14px 12px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  margin: 10px 0 18px;
  font-size: 14.5px;
}
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: #f7f8fa; }
ol, ul { padding-left: 22px; }
li { margin: 4px 0; }
code, kbd {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.9em;
  background: #eef1f5;
  padding: 1px 5px;
  border-radius: 4px;
}
pre {
  background: #1c2833;
  color: #e8eef4;
  padding: 12px 14px;
  border-radius: 8px;
  overflow: auto;
  font-size: 13px;
}
.callout {
  border-left: 4px solid var(--note-border);
  background: var(--note);
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
  margin: 12px 0 16px;
}
.callout.warn { border-left-color: var(--warn-border); background: var(--warn-bg); }
.menu-map { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.menu-map h3 { margin: 0 0 8px; }
.who-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.who-grid a {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  text-decoration: none;
  color: inherit;
}
.who-grid a:hover { border-color: var(--accent); }
.who-grid strong { display: block; color: var(--accent); margin-bottom: 4px; }
.footer-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; }
}
@media print {
  .site-header, .side, .footer-nav { display: none; }
  .layout { display: block; padding: 0; }
  body { background: #fff; }
  figure { break-inside: avoid; }
}