#fs-language-toggle{
  /* Nascosto per impostazione predefinita: compare SOLO dove esiste F·S in testata. */
  display:none;
  position:fixed;top:52px;left:calc(50% + 44px);
  z-index:9999;padding:2px 7px;
  border:0;border-bottom:1px solid currentColor;
  border-radius:0;background:transparent;color:#fff;
  mix-blend-mode:difference;font-family:"Space Mono","Courier New",monospace;
  font-size:11px;font-weight:700;line-height:1.4;letter-spacing:.10em;
  cursor:pointer;touch-action:manipulation;
  transform-origin:center center;
  transition:opacity .45s cubic-bezier(.4,0,.2,1),transform .45s cubic-bezier(.4,0,.2,1);
}
/* Stesso punto di comparsa del logo F·S superiore (non quello del menu in basso). */
body:has(.fixed-brand) #fs-language-toggle{
  display:block;
}
/* Stessa scomparsa durante lo scroll. */
html.show-nav-scroll #fs-language-toggle{
  transform:scaleY(0);
  opacity:0;
  pointer-events:none;
}
#fs-language-toggle:hover{opacity:.65}
#fs-language-toggle:focus-visible{outline:2px solid currentColor;outline-offset:4px}
@media(max-width:767px){#fs-language-toggle{top:54px;left:calc(50% + 37px);padding:2px 6px;font-size:10px}}