/* === BfastAI — Pastille de verre de la nav, commune à toutes les pages =========
   Posée et déplacée par assets/nav.js. */
.bf-nav-glass{position:absolute;left:0;top:0;z-index:1;pointer-events:none;border-radius:999px;background:linear-gradient(180deg,rgba(255,252,248,.18),rgba(255,252,248,.06));-webkit-backdrop-filter:blur(8px) saturate(160%);backdrop-filter:blur(8px) saturate(160%);border:1px solid rgba(255,252,248,.22);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),inset 0 -6px 12px rgba(0,0,0,.18),0 4px 14px rgba(0,0,0,.25);opacity:0;transition:transform .45s cubic-bezier(.4,0,.2,1),width .45s cubic-bezier(.4,0,.2,1),height .3s ease,top .3s ease,opacity .25s ease;}
@media (prefers-reduced-motion:reduce){.bf-nav-glass{transition:opacity .2s ease;}}