/* Slow, quiet waves around the interlude heading. Content keeps its own layout. */
.pd-interlude {
  position: relative;
  isolation: isolate;
}

.pd-rings {
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: 0;
  overflow: hidden;
  pointer-events: none;
  contain: paint;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 44px, #000 calc(100% - 112px), transparent);
  mask-image: linear-gradient(to bottom, transparent, #000 44px, #000 calc(100% - 112px), transparent);
}

.pd-rings__svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  fill: none;
}

.pd-rings__wave {
  transform-origin: 0 0;
  transform: scale(var(--pd-rings-static-scale, 1));
  opacity: 1;
}

.pd-rings__line {
  fill: none;
  stroke: #fff;
  stroke-width: 1px;
  vector-effect: non-scaling-stroke;
}

.pd-rings__light {
  opacity: 0;
}

@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .pd-rings--motion .pd-rings__wave {
    animation: pd-rings-expand 28s linear infinite;
    animation-delay: var(--pd-rings-delay, 0s);
    animation-play-state: paused;
  }

  .pd-rings--running .pd-rings__wave {
    animation-play-state: running;
  }

  .pd-rings__parallax,
  .pd-rings__spotlight {
    transition: transform 500ms var(--ease-out, cubic-bezier(0.23, 1, 0.32, 1));
  }

  .pd-rings__light {
    transition: opacity 200ms ease;
  }

  .pd-rings--pointer .pd-rings__light {
    opacity: 1;
  }
}

@keyframes pd-rings-expand {
  0% {
    transform: scale(1);
    opacity: 0;
  }
  12% {
    opacity: 1;
  }
  76% {
    opacity: 1;
  }
  100% {
    transform: scale(var(--pd-rings-end-scale, 1.6));
    opacity: 0;
  }
}

@media (max-width: 719.98px) {
  .pd-rings {
    -webkit-mask-image: linear-gradient(to bottom, transparent, #000 24px, #000 calc(100% - 76px), transparent);
    mask-image: linear-gradient(to bottom, transparent, #000 24px, #000 calc(100% - 76px), transparent);
  }
}

@media (prefers-reduced-motion: reduce), (hover: none), (pointer: coarse) {
  .pd-rings__wave {
    animation: none;
  }

  .pd-rings__parallax,
  .pd-rings__spotlight,
  .pd-rings__light {
    transition: none;
  }
}