nav#sidebar {

  > form[role=tablist] {
    > div:has( label[role=tab][for=modelLibrary] + input#modelLibrary[type=radio] + div[role=tabpanel]) {
      
      > label[role=tab][for=modelLibrary]::before {
        content: var( --icon-ai );
      } 
    }

    > div:has( label[role=tab][for=modelLibrary] + input#modelLibrary[type=radio] + div[role=tabpanel]:empty) {
      display: none;
    }
  }
}