/*
 * Supplementary rules for the PHP build.
 *
 * All visual design already lives in the compiled site.css. The single rule
 * here makes the HTML `hidden` attribute authoritative for JS-managed panels,
 * the mobile navigation and overlay dialogs, so they cannot be overridden by
 * a layout utility in the compiled sheet.
 */
[hidden] {
  display: none !important;
}