.curtain-columns {
  display: none;
}

html.has-curtain-bridge .opening-sequence {
  --opening-extent: 115svh;
}

html.has-curtain-bridge .chapter--material {
  overflow: visible;
}

html.has-curtain-bridge .chapter--material::before {
  content: "";
  position: absolute;
  z-index: 0;
  right: 0;
  bottom: 100%;
  left: 0;
  height: clamp(48px, 7svh, 84px);
  background: var(--color-cream);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

html.has-curtain-bridge .chapter--material .chapter__inner,
html.has-curtain-bridge .chapter--material .matter-gallery,
html.has-curtain-bridge .curtain-columns {
  position: relative;
  z-index: 1;
}

html.has-curtain-bridge .curtain-columns {
  --curtain-columns-opacity: 0;
  --curtain-column-left-y: 10vh;
  --curtain-column-center-y: -8vh;
  --curtain-column-right-y: 12vh;
  display: grid;
  grid-template-columns: 24fr 38fr 22fr;
  gap: 3vw;
  width: 100%;
  height: 110svh;
  margin-bottom: clamp(76px, 11svh, 132px);
  padding: clamp(48px, 7svh, 84px) 5vw 0;
  overflow: hidden;
  opacity: var(--curtain-columns-opacity);
  pointer-events: none;
  will-change: opacity;
}

.curtain-columns__track {
  display: grid;
  align-content: start;
  gap: clamp(14px, 1.6vw, 24px);
  will-change: transform;
}

.curtain-columns__track--left {
  transform: translate3d(0, var(--curtain-column-left-y), 0);
}

.curtain-columns__track--center {
  transform: translate3d(0, var(--curtain-column-center-y), 0);
}

.curtain-columns__track--right {
  transform: translate3d(0, var(--curtain-column-right-y), 0);
}

.curtain-columns figure {
  min-height: 0;
  margin: 0;
  overflow: hidden;
  border-radius: clamp(14px, 1.4vw, 22px);
  background: #e9e3dc;
}

.curtain-columns__track--left figure:nth-child(1) { height: 38svh; }
.curtain-columns__track--left figure:nth-child(2) { height: 32svh; }
.curtain-columns__track--left figure:nth-child(3) { height: 44svh; }

.curtain-columns__track--center figure:nth-child(1) { height: 46svh; }
.curtain-columns__track--center figure:nth-child(2) { height: 34svh; }
.curtain-columns__track--center figure:nth-child(3) { height: 42svh; }

.curtain-columns__track--right figure:nth-child(1) { height: 36svh; }
.curtain-columns__track--right figure:nth-child(2) { height: 42svh; }
.curtain-columns__track--right figure:nth-child(3) { height: 34svh; }

.curtain-columns img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}

.curtain-columns__track--left img {
  object-position: 54% center;
}

.curtain-columns__track--center img {
  object-position: center;
}

.curtain-columns__track--right img {
  object-position: 45% center;
}

html.has-curtain-bridge .chapter--material .chapter-heading {
  opacity: var(--curtain-heading-opacity, 0);
  transform: translate3d(0, var(--curtain-heading-y, 28px), 0);
  filter: none;
  will-change: opacity, transform;
}

html.has-curtain-bridge.curtain-header-on-cream .site-header {
  border-bottom: 1px solid rgba(44, 24, 16, 0.12);
  background: rgba(249, 246, 242, 0.96);
  color: var(--color-ink);
  text-shadow: none;
}

html.has-curtain-bridge.curtain-header-on-cream .site-brand__light {
  opacity: 0;
}

html.has-curtain-bridge.curtain-header-on-cream .site-brand__dark {
  opacity: 1;
}

html[data-motion="off"].has-curtain-bridge .opening-sequence {
  --opening-extent: 170svh;
}

html[data-motion="off"].has-curtain-bridge .chapter--material::before,
html[data-motion="off"].has-curtain-bridge .curtain-columns {
  display: none;
}

html[data-motion="off"].has-curtain-bridge .chapter--material .chapter-heading {
  opacity: 1;
  transform: none;
}

@media (max-width: 820px) {
  html.has-curtain-bridge .opening-sequence {
    --opening-extent: 115svh;
  }

  html.has-curtain-bridge .chapter--material::before {
    height: 42px;
  }

  html.has-curtain-bridge .curtain-columns {
    grid-template-columns: 28fr 42fr 28fr;
    gap: 12px;
    width: 100%;
    height: 105svh;
    margin-left: 0;
    margin-bottom: 72px;
    padding: 42px 0 0;
  }

  .curtain-columns figure {
    border-radius: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html.has-curtain-bridge .opening-sequence {
    --opening-extent: 140svh;
  }

  html.has-curtain-bridge .chapter--material::before,
  html.has-curtain-bridge .curtain-columns {
    display: none;
  }

  html.has-curtain-bridge .chapter--material .chapter-heading {
    opacity: 1;
    transform: none;
  }
}




/* Early curtain timing */
html.has-curtain-bridge .chapter--material {
  padding-top: clamp(60px, 8svh, 84px);
}