#alSVG .flyFromLeft,
#alSVG .flyFromRight {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: 50% 50%;
  will-change: transform, opacity;
  transition: transform var(--fly-duration, 700ms)
      var(--fly-ease, cubic-bezier(0.2, 0.7, 0.2, 1)),
    opacity var(--fly-duration, 700ms) ease;
}

#alSVG #al_4 {
  transform-box: fill-box;
  transform-origin: 0% 50%;
  will-change: transform, opacity;
  opacity: 0; /* скрыть, пока вне "тоннеля" */
}

/* Смещения */
#alSVG .flyFromLeft {
  transform: translateX(calc(var(--fly-dist, 120px) * -1));
}
#alSVG .flyFromRight {
  transform: translateX(var(--fly-dist, 120px));
}

/* В кадре */
#alSVG .in {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* АДАПТАЦИЯ */
@media (prefers-reduced-motion: reduce) {
  #alSVG .flyFromLeft,
  #alSVG .flyFromRight {
    transition: none;
  }
  #alSVG #al_4 {
    transform: none !important;
    opacity: 1 !important;
  }
}