.nav-rail__submenu-list{margin:0;padding:0;list-style:none}.nav-rail__submenu-list .nav-rail-subitem{width:100%}.nav-rail-subitem .nav-rail-subitem__arrow{transition:transform var(--speed2,.2s) cubic-bezier(.2,0,0,1);margin-left:auto}.nav-rail-subitem .nav-rail-subitem__reveal{transition:grid-template-rows var(--speed2,.2s) cubic-bezier(.2,0,0,1);grid-template-rows:0fr;display:grid}.nav-rail-subitem .nav-rail-subitem__reveal>*{min-height:0;overflow:hidden}.nav-rail-subitem.nav-rail-subitem--open>button .nav-rail-subitem__arrow{transform:rotate(180deg)}.nav-rail-subitem.nav-rail-subitem--open>.nav-rail-subitem__reveal{grid-template-rows:1fr}