/* Cache-busting header nav override: with Wiki added, eight sections plus the
   logo must fit one line inside the 660px wrap. New filename so iOS Safari
   cannot serve a stale cached copy. Desktop only; mobile uses the hamburger. */
@media (min-width: 641px) {
  nav:not(.fnav) {
    gap: 12px;
    font-size: 13px;
  }
  nav:not(.fnav) a:not(:first-child) {
    letter-spacing: 0.05em;
  }
}