/* ───────────────────────────────────────────────────────────────
   PROTOTYPE LINK: show or hide it in one place.

       block  = shown   (closing slide + /docs page)
       none   = hidden

   The URL itself lives in docs/index.html, on the "Live prototype"
   card — search for data-prototype-link.

   !important is deliberate: this is a kill switch, and the /docs
   page styles its cards with `a.doc`, which would otherwise outrank
   a plain attribute selector and keep the card visible.
   ─────────────────────────────────────────────────────────────── */
[data-prototype-block] { display: block !important; }