/* Knowledge navigation: independent rows and a readable hierarchy. */
.knowledge-reader .docs-sidebar {
  padding-top: 24px;
  padding-right: 18px;
  padding-bottom: 40px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  overscroll-behavior: contain;
}
.knowledge-reader .docs-sidebar section { margin-bottom: 16px; }
.knowledge-reader .docs-sidebar .nav-track { padding-top: 12px; border-top: 1px solid var(--line); }
.knowledge-reader .docs-sidebar .nav-toggle {
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 8px;
  line-height: 1.5;
  transition: background .15s ease;
}
.knowledge-reader .docs-sidebar .nav-toggle:hover { background: var(--surface); }
.knowledge-reader .docs-sidebar .nav-toggle span { width: 18px; flex: 0 0 18px; text-align: center; color: var(--muted); }
.knowledge-reader .docs-sidebar .nav-toggle em {
  min-width: 24px;
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  font-size: 10px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.knowledge-reader .docs-sidebar .nav-chapter {
  margin: 6px 0 8px 8px;
  padding-left: 8px;
  border-left: 1px solid var(--line);
}
.knowledge-reader .docs-sidebar .nav-chapter > .nav-toggle { font-size: 12px; font-weight: 650; }
.knowledge-reader .docs-sidebar .nav-chapter > .nav-body { padding: 4px 0 6px; }
.knowledge-reader .docs-sidebar .nav-body a {
  display: block;
  position: relative;
  width: 100%;
  margin: 3px 0;
  padding: 9px 12px;
  border-radius: 7px;
  color: var(--text-2);
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.65;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: background .15s ease, color .15s ease;
}
.knowledge-reader .docs-sidebar .nav-body a:hover { background: var(--surface); color: var(--primary); }
.knowledge-reader .docs-sidebar .nav-body a.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 650;
}
.knowledge-reader .docs-sidebar .nav-body a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.knowledge-reader .docs-sidebar a:focus-visible,
.knowledge-reader .docs-sidebar button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
@media (min-width: 1051px) {
  .knowledge-reader.docs-grid { grid-template-columns: minmax(260px, calc((100vw - 1160px)/2 + 240px)) minmax(0, 740px) 220px 1fr; }
}