/* The mechanism itself is the entrance. Keep an accessible, invisible click target. */
#core,#core:hover,#core:active,#core:focus-visible {
  top:46%; width:clamp(180px,30vw,420px); height:180px; padding:0;
  background:none; border:0; box-shadow:none; text-shadow:none;
  backdrop-filter:none; border-radius:50%;
}
#core-label { display:none!important; }
#core:focus-visible { outline:1px solid #69bcff88; outline-offset:8px; }
@media(max-width:850px) { #core,#core:hover,#core:active,#core:focus-visible { top:34%; width:60%; height:150px; } }