.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.intro {
  position: relative;
  min-height: 125vh;
  overflow: visible;
  background: var(--page-background);
}

.pixel-section {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  overflow: hidden;
  background: var(--page-background);
}

.pixel-section__fill {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: var(--color-red-main);
  opacity: 0;
  pointer-events: none;
}

.pixel-transition {
  position: absolute;
  z-index: 2;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: minmax(0, 1fr);
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.pixel-transition__tile {
  min-width: 0;
  min-height: 0;
  background: var(--color-red-main);
  opacity: 0;
  will-change: opacity;
}

@media (max-width: 700px) {
  .pixel-transition {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .pixel-transition__tile {
    opacity: 1;
  }

  .pixel-section__fill {
    opacity: 1;
  }
}