/* One native back button; only its parent changes with the covering surface. */
.exam-shell .reading-note-toolbar>.practice-back{
 order:-2;flex:none;width:44px;height:44px;min-width:44px;min-height:44px;
 padding:10px;border-radius:10px;touch-action:manipulation;
}
.exam-shell .pause-overlay>.practice-back{
 position:absolute;left:clamp(20px,4vw,64px);top:max(6px,env(safe-area-inset-top,0px));
 width:44px;height:44px;min-width:44px;min-height:44px;padding:10px;
 border-radius:10px;touch-action:manipulation;
}
.exam-shell .practice-back svg{width:24px;height:24px;pointer-events:none}
@media(max-width:760px){.exam-shell .pause-overlay>.practice-back{left:18px}}