/* Hide the index/redirect "Contents" entry from the book sidebar.
   Quarto books require an index page in the chapters list, but our index
   is a meta-refresh redirect to the first real chapter and shouldn't be
   listed as a navigable sidebar item. */
#quarto-sidebar li.sidebar-item:has(> .sidebar-item-container > a[href$="/index.html"]) {
  display: none;
}