:root {
  --ink: #1b1d21;
  --dim: #5c6169;
  --line: #d9dde3;
  --bg: #fbfaf8;
  --panel: #f2f1ed;
  --accent: #7a4b1e;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.62 Charter, Georgia, "Times New Roman", serif;
}

.page {
  display: grid;
  grid-template-columns: 15rem minmax(0, 46rem);
  gap: 3rem;
  max-width: 66rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 6rem;
}

nav {
  position: sticky;
  top: 2.5rem;
  align-self: start;
  font-size: 0.9rem;
}

nav .mark {
  display: block;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.4rem;
  margin-bottom: 1.2rem;
}

nav ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li { margin: 0.35rem 0; }

nav a {
  color: var(--dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.7rem;
  display: block;
}

nav a:hover { color: var(--ink); }

nav a.here {
  color: var(--ink);
  border-left-color: var(--accent);
}

main { min-width: 0; }

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  margin: 0 0 0.6rem;
  font-weight: 600;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2.6rem 0 0.6rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 1.02rem;
  font-weight: 600;
  margin: 1.7rem 0 0.4rem;
}

p { margin: 0.8rem 0; }

.lede {
  font-size: 1.1rem;
  color: var(--dim);
  margin-bottom: 2rem;
}

a { color: var(--accent); }

code, pre, kbd, td code {
  font-family: "DejaVu Sans Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86em;
}

code { background: var(--panel); padding: 0.08em 0.3em; border-radius: 2px; }

pre {
  background: var(--panel);
  border-left: 2px solid var(--line);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
}

pre code { background: none; padding: 0; }

kbd {
  background: #fff;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 3px;
  padding: 0.05em 0.35em;
  white-space: nowrap;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.45rem 0.7rem 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

th {
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--dim);
}

td:first-child { white-space: nowrap; padding-right: 1.2rem; }

td.wrap:first-child { white-space: normal; }

ul, ol { padding-left: 1.2rem; }

li { margin: 0.3rem 0; }

.note {
  background: var(--panel);
  border-left: 2px solid var(--accent);
  padding: 0.7rem 1rem;
  margin: 1.4rem 0;
}

.note p { margin: 0.3rem 0; }

footer {
  grid-column: 2;
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.85rem;
}

@media (max-width: 62rem) {
  .page { grid-template-columns: 1fr; gap: 1.5rem; }
  nav { position: static; }
  nav ol { columns: 2; }
  footer { grid-column: 1; }
}