/* Round 43 · navigation veil (canonical final page only). Paper over the content, under the header (z 40),
   so the top navigation stays visible and clickable. It never takes input and is never announced.
   Opacity is driven by navigation43.js; only an interrupted run fades it out by CSS. */
body[data-navigation-polish] .nav43-veil{position:fixed;inset:0;z-index:39;background:var(--paper);opacity:0;visibility:hidden;pointer-events:none}
body[data-navigation-polish] .nav43-veil[data-releasing]{transition:opacity .2s linear,visibility 0s linear .2s}
@media(prefers-reduced-motion:reduce){body[data-navigation-polish] .nav43-veil{display:none}}