/* iPhone/WebKit stability layer: prevent pre-ready FOUC and suspend work in
   slides that Reveal has classified as non-current. Teaching content and the
   desktop 1600x900 composition are unchanged. */

.mobile-stability-mode .reveal.ready > .slides > section:not(.present) {
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.mobile-stability-mode .reveal.ready > .slides > section:not(.present),
.mobile-stability-mode .reveal.ready > .slides > section:not(.present) * {
    animation-play-state: paused !important;
}

.mobile-stability-mode .reveal.ready > .slides > section:not(.present) video {
    visibility: hidden !important;
}