/* This prototype replaces only the narrow bar's backdrop. Links and the
   established intro remain separate, above the optical surface. */
.header-inner > .header-glass > .iphone-refraction {
  position:absolute;inset:0;width:100%;height:100%;border-radius:inherit;
  pointer-events:none;opacity:0;
}
html .site-header .header-inner > .header-glass[data-webgl-glass] {
  -webkit-backdrop-filter:none;backdrop-filter:none;background:transparent;
}
.header-inner > .header-glass[data-webgl-glass] > .iphone-refraction {opacity:1;}
.header-inner > .header-glass[data-webgl-glass]::before,
.header-inner > .header-glass[data-webgl-glass]::after {z-index:1;}