/* The site uses viewport-fit=auto: Safari owns the outer safe area.
   Keep the reading tabs at the scrollport edge, without reserving a second
   header/safe-area lane. GNB remains in ordinary document flow (V9).
   reading-navigation-v9.js measures this actual top and tab height for anchors. */
@media (max-width:760px) {
  html:has(.w-reading) { --anchor-offset:77px; }
  body:has(.w-reading) .w-toc { top:0; }
}