/* Preserve the accepted shell geometry: fade only, without removing layout space. */
.house-shell-header[data-scroll-chrome],.house-mobile-nav[data-scroll-chrome],.r512-tray-launcher{
  opacity:1;
  transition:opacity 220ms cubic-bezier(.22,.61,.36,1);
}
.house-shell-header[data-scroll-hidden="true"],.house-mobile-nav[data-scroll-hidden="true"],html[data-house-chrome-hidden="true"] .r512-tray-launcher{
  opacity:0;
  pointer-events:none;
}
.house-shell-header[data-scroll-chrome]:focus-within,.house-mobile-nav[data-scroll-chrome]:focus-within{
  opacity:1;
  pointer-events:auto;
}
@media(prefers-reduced-motion:reduce){
  .house-shell-header[data-scroll-chrome],.house-mobile-nav[data-scroll-chrome],.r512-tray-launcher{transition:none}
}