/* The Sutra Voice lockup on the introduction page. mdBook switches themes with a class on <html>,
   not prefers-color-scheme, so both lockups are in the page and the theme shows one. */
.brand-lockup { margin: 0.5em 0 1.5em; }
.brand-lockup img { max-width: 540px; width: 100%; height: auto; }
.brand-lockup .on-dark { display: none; }
html.coal .brand-lockup .on-light, html.navy .brand-lockup .on-light, html.ayu .brand-lockup .on-light { display: none; }
html.coal .brand-lockup .on-dark, html.navy .brand-lockup .on-dark, html.ayu .brand-lockup .on-dark { display: inline; }
main h1:first-child:has(+ .brand-lockup) {
  position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}