.section-scroll-media {
  position: relative;
  block-size: 200vh;
}

.section-scroll-media-container {
  position: sticky;
  inset-block-start: calc(var(--header-height) + var(--announcement-bar-height));
  inline-size: 100%;
  block-size: calc(100svh - calc(var(--header-height) + var(--announcement-bar-height)));

  video,
  img {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
  }

  &::after {
    content: '';
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    box-shadow: inset 0 0 0 var(--layout-margin) var(--scheme-background);
    animation-name: shrink-shadow;
    animation-duration: 1ms;
    animation-fill-mode: forwards;
    animation-timing-function: linear;
    animation-timeline: view();
    animation-range: entry 100% exit -25%;
    pointer-events: none;
    z-index: 1;
  }
}

@keyframes shrink-shadow {
  from {
    box-shadow: inset 0 0 0 var(--layout-margin) var(--scheme-background);
  }

  to {
    box-shadow: inset 0 0 0 0 var(--scheme-background);
  }
}