/* Nav section headers ("Guides", "Reference", etc.) — visually distinct
   from clickable page links so they don't afford clicking. */
.md-nav--primary .md-nav__item--section > .md-nav__link {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.6;
  cursor: default;
}