:root {
  --paper: #efe6d6;
  --sheet: #f7f1e6;
  --ink: #1c1915;
  --muted: #5e564c;
  --line: #ddcbb3;
  --side: #242018;
  --side-ink: #f3eadc;
  --copper: #9a4318;
  --copper-soft: #f3e0d2;
  --code: #1a2320;
  --code-ink: #e7f0ea;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
  background: var(--paper);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 18px;
  line-height: 1.55;
}

.side {
  background: var(--side);
  color: var(--side-ink);
  padding: 28px 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}
.mark {
  width: 36px;
  height: 36px;
  border: 1.5px solid #e6d3b5;
  border-radius: 4px;
  background:
    linear-gradient(#e6d3b5, #e6d3b5) 8px 17px / 20px 1.5px no-repeat,
    linear-gradient(#e6d3b5, #e6d3b5) 12px 10px / 6px 6px no-repeat,
    linear-gradient(#e6d3b5, #e6d3b5) 20px 10px / 6px 6px no-repeat;
}
.brand strong { display: block; font-size: 16px; letter-spacing: 0.01em; }
.brand small { display: block; color: #cbbba3; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; }
.docid {
  margin: 0;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #cbbba3;
}
.side nav { display: flex; flex-direction: column; gap: 4px; }
.side a {
  color: #f3eadc;
  text-decoration: none;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
  padding: 8px 10px;
  border-radius: 6px;
}
.side nav a:hover { background: rgba(255,255,255,0.06); }
.side nav a.active { background: #9a4318; color: #fffaf4; }
.side-note {
  margin-top: auto;
  color: #cbbba3;
  font-size: 13px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  line-height: 1.45;
}

main { padding: 42px 56px 64px; max-width: 980px; }
.crumb {
  margin: 0 0 8px;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
}
h1 { margin: 0 0 10px; font-size: 42px; line-height: 1.1; font-weight: 600; }
.lead { margin: 0 0 28px; color: var(--muted); font-size: 20px; }
section { margin: 0 0 34px; }
h2 { font-size: 26px; margin: 0 0 10px; }
h3 { margin: 0 0 6px; font-size: 18px; }
p { margin: 0 0 12px; }
a { color: var(--copper); }
ol, ul { margin: 0 0 12px; padding-left: 1.2em; }
li + li { margin-top: 6px; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.grid article {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
}
.callout {
  background: var(--copper-soft);
  border-left: 4px solid var(--copper);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
}
.callout p { margin: 4px 0 0; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--sheet);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
}
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }

code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: #efe0cf;
  padding: 0.05em 0.3em;
  border-radius: 4px;
}
pre {
  background: var(--code);
  color: var(--code-ink);
  padding: 16px 18px;
  border-radius: 10px;
  overflow: auto;
  line-height: 1.45;
}
pre code { background: transparent; color: inherit; padding: 0; font-size: 13.5px; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
}

@media (max-width: 860px) {
  body { display: block; font-size: 17px; }
  .side { position: relative; height: auto; }
  .side-note { margin-top: 8px; }
  .side nav { flex-direction: row; flex-wrap: wrap; }
  main { padding: 28px 18px 48px; }
  h1 { font-size: 32px; }
  .grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; }
}