.research-page {
  background:
    radial-gradient(70rem 36rem at 82% -8%, var(--green-soft), transparent 62%),
    var(--ink);
}

.research-hero,
.research-detail__hero {
  padding-block: clamp(5rem, 10vw, 8rem) clamp(3.5rem, 7vw, 5.5rem);
}

.research-hero__inner,
.research-detail__hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(20rem, .65fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: end;
}

.research-hero__copy h1,
.research-detail__hero h1 {
  margin: 0;
  max-width: 12ch;
  font-size: var(--fs-display);
}

.research-hero__meta,
.research-detail__type {
  margin: 0 0 1rem;
  color: var(--green-bright);
}

.research-hero__intro,
.research-detail__lede {
  max-width: 46rem;
}

.research-hero__intro .lede,
.research-detail__lede {
  margin: 0 0 1.5rem;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.research-card {
  min-width: 0;
  background: var(--ink-1);
}

.research-card__link {
  display: flex;
  min-height: 24rem;
  height: 100%;
  flex-direction: column;
  gap: 1.25rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  color: inherit;
  text-decoration: none;
}

.research-card__link:hover h3,
.research-card__link:focus-visible h3 {
  color: var(--green-bright);
}

.research-card__head {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-3);
}

.research-card__type {
  color: var(--green-bright);
}

.research-card h3 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2rem, 4.2vw, 3.5rem);
  transition: color var(--t-base);
}

.research-card p {
  margin: 0;
  max-width: 52ch;
  color: var(--text-2);
}

.research-card__action {
  margin-top: auto;
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text);
}

.research-breadcrumbs {
  grid-column: 1 / -1;
  margin-bottom: clamp(1rem, 3vw, 2rem);
}

.research-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--text-3);
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
}

.research-breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: .5rem;
  color: var(--text-5);
}

.research-breadcrumbs a {
  color: var(--text-2);
  text-decoration: none;
}

.research-breadcrumbs a:hover {
  color: var(--green-bright);
}

.research-viewer-wrap {
  padding-block: clamp(.75rem, 2vw, 1.25rem) clamp(2rem, 5vw, 4rem);
}

.research-viewer-wrap__inner {
  display: grid;
  gap: clamp(.75rem, 1.7vw, 1rem);
}

.research-viewer-wrap .research-breadcrumbs {
  margin-bottom: 0;
}

.research-viewer-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(18rem, .55fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
}

.research-viewer-head h1 {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(1.75rem, 3.2vw, 3.5rem);
}

.research-viewer-head__description {
  margin: 0;
  color: var(--text-2);
  font-size: var(--fs-body);
  line-height: 1.45;
}

.pptx-viewer {
  --pptx-zoom: 1;
  display: grid;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.pptx-viewer__toolbar {
  display: flex;
  min-width: 0;
  gap: .75rem;
  align-items: center;
  justify-content: space-between;
  padding: .75rem;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}

.pptx-viewer__nav,
.pptx-viewer__tools {
  display: flex;
  min-width: 0;
  gap: .5rem;
  align-items: center;
}

.pptx-viewer__button {
  display: inline-grid;
  min-width: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  padding: 0 .85rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font: 600 .95rem/1 var(--sans);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}

.pptx-viewer__button:hover,
.pptx-viewer__button:focus-visible {
  border-color: var(--green-bright);
  background: var(--green-soft);
}

.pptx-viewer__button:disabled {
  cursor: default;
  color: var(--text-5);
  border-color: var(--line);
  background: transparent;
}

.pptx-viewer__button--wide {
  min-width: 5rem;
}

.pptx-viewer__counter {
  min-width: 4.5rem;
  color: var(--text-2);
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .12em;
  text-align: center;
}

.pptx-viewer__body {
  display: grid;
  grid-template-columns: clamp(9rem, 16vw, 14rem) minmax(0, 1fr);
  min-height: 0;
  height: min(66vh, 44rem);
}

.pptx-viewer__thumbs {
  display: grid;
  align-content: start;
  gap: .625rem;
  overflow: auto;
  padding: .75rem;
  border-right: 1px solid var(--line);
  background: var(--ink);
  scrollbar-color: var(--line-3) transparent;
}

.pptx-thumb {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: .5rem;
  align-items: center;
  width: 100%;
  padding: .25rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  text-align: left;
}

.pptx-thumb:hover,
.pptx-thumb:focus-visible,
.pptx-thumb.is-active {
  border-color: var(--green-bright);
  background: var(--green-soft);
  color: var(--text);
}

.pptx-thumb__number {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .08em;
  text-align: center;
}

.pptx-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: 4px;
  background: var(--ink-2);
}

.pptx-viewer__stage {
  --pptx-stage-pad: clamp(.75rem, 2vw, 1.5rem);
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  place-items: center;
  padding: var(--pptx-stage-pad);
  background:
    radial-gradient(48rem 28rem at 80% 12%, var(--green-soft), transparent 64%),
    var(--ink-1);
  scrollbar-color: var(--line-3) transparent;
}

.pptx-viewer.is-zoomed .pptx-viewer__stage {
  overflow: auto;
}

.pptx-viewer__image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  opacity: 0;
  object-fit: contain;
  box-shadow: 0 1.25rem 4rem rgba(0, 0, 0, .35);
  transition: opacity var(--t-base);
  user-select: none;
}

.pptx-viewer__image.is-visible {
  opacity: 1;
}

.pptx-viewer.is-zoomed .pptx-viewer__image {
  max-width: none;
  max-height: none;
}

.pptx-viewer__loader {
  position: absolute;
  inset: auto;
  z-index: 3;
  padding: .75rem 1rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--ink);
  color: var(--text-2);
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.pptx-viewer:fullscreen {
  height: 100vh;
  background: var(--ink);
}

.pptx-viewer:fullscreen .pptx-viewer__body {
  height: calc(100vh - 4.5rem);
}

.pptx-viewer:fullscreen .pptx-viewer__image {
  max-height: calc(100vh - 7rem);
}

@media (max-width: 860px) {
  .research-hero__inner,
  .research-detail__hero-inner,
  .research-viewer-head {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .research-hero__copy h1,
  .research-detail__hero h1 {
    max-width: 11ch;
  }

  .research-grid {
    grid-template-columns: 1fr;
  }

  .research-card__link {
    min-height: 20rem;
  }

  .pptx-viewer__toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .pptx-viewer__tools {
    overflow-x: auto;
    padding-bottom: .125rem;
  }

  .pptx-viewer__body {
    grid-template-columns: 1fr;
    height: auto;
  }

  .pptx-viewer__thumbs {
    display: flex;
    order: 2;
    overflow-x: auto;
    overflow-y: hidden;
    border-top: 1px solid var(--line);
    border-right: 0;
  }

  .pptx-thumb {
    flex: 0 0 9rem;
    grid-template-columns: 1fr;
    gap: .25rem;
  }

  .pptx-thumb__number {
    text-align: left;
  }

  .pptx-viewer__stage {
    min-height: min(54vh, 32rem);
    overflow: hidden;
  }

  .pptx-viewer__image {
    width: auto;
    max-width: 100%;
    max-height: 100%;
  }
}

@media (max-width: 560px) {
  .research-viewer-wrap__inner {
    padding-inline: 0;
  }

  .research-viewer-head,
  .research-breadcrumbs {
    padding-inline: var(--gutter);
  }

  .pptx-viewer {
    border-inline: 0;
  }

  .pptx-viewer__button--wide {
    min-width: auto;
  }

  .pptx-viewer__tools .pptx-viewer__button {
    white-space: nowrap;
  }

  .pptx-viewer__stage {
    --pptx-stage-pad: .75rem;
    min-height: min(50vh, 28rem);
  }

  .pptx-viewer__image {
    width: auto;
    max-width: 100%;
    max-height: 100%;
  }

}