/* Shared flat navigation: shape and color communicate state, never bevels or 3D motion. */
:root body :is(nav,.site-header,.site-footer,.hub-information-actions) :is(a,button,select,[role=tab]),
:root body #shell#shell#shell#shell :is(#sidebar,.topbar,nav,.dock-tabs,.workspace-bottom-nav) :is(a,button,select,[role=tab]),
:root body :is(.button,.header-cta,.nav,.launch-tool,.hub-download) {
 box-shadow:none!important;text-shadow:none!important;filter:none!important;background-image:none!important;transform:none!important;perspective:none!important;backdrop-filter:none!important;
}