/* Topic guides share their approved illustration with the homepage directory. */
.topic-hub .topic-hero { padding: clamp(54px, 6vw, 86px) 0; }
.topic-hub .topic-hero-inner {
  max-width: 1360px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(160px, 250px);
  align-items: end;
  gap: clamp(32px, 7vw, 110px);
}
.topic-hub .topic-hero-inner > div { max-width: 740px; }
.topic-hub .topic-back { display: inline-block; margin-bottom: 32px; }
.topic-hub .topic-hero-inner .eyebrow { margin: 0; }
.topic-hub .topic-hero-inner h1 {
  margin: 12px 0 18px;
  font-size: clamp(43px, 5vw, 68px);
  line-height: 1.06;
  text-wrap: balance;
}
.topic-hub .topic-hero-inner p:not(.eyebrow) { max-width: 50ch; font-size: 18px; line-height: 1.65; }
.topic-hub .topic-hero-link { display: inline-block; margin-top: 22px; text-underline-offset: 4px; }
.topic-hub .topic-hero-art {
  width: 100%; max-width: 220px; max-height: none;
  aspect-ratio: 1; object-fit: contain; border-radius: 0;
  justify-self: center; align-self: end;
}
@media (max-width: 650px) {
  .topic-hub .topic-hero { padding: 38px 0 44px; }
  .topic-hub .topic-hero-inner { grid-template-columns: minmax(0, 1fr) 80px; gap: 16px; align-items: end; }
  .topic-hub .topic-back { margin-bottom: 24px; }
  .topic-hub .topic-hero-inner h1 { font-size: clamp(36px, 9vw, 48px); }
  .topic-hub .topic-hero-inner p:not(.eyebrow) { font-size: 16px; }
  .topic-hub .topic-hero-art { width: 80px; }
}
@media (max-width: 380px) {
  .topic-hub .topic-hero-inner { grid-template-columns: 1fr; }
  .topic-hub .topic-hero-art { justify-self: start; width: 88px; }
}

/* Unpublished collections need a useful reading list, not an empty catalogue. */
.topic-hub .topic-content { max-width: 1360px; padding-block: 64px 88px; }
.topic-hub .topic-planning,
.topic-hub .topic-questions--later {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 7vw, 110px);
  align-items: start;
  scroll-margin-top: 110px;
}
.topic-hub .topic-planning h2,
.topic-hub .topic-questions--later h2 { margin: 0 0 18px; font-size: 30px; }
.topic-hub .topic-planning-note p,
.topic-hub .topic-questions--later .topic-section-heading p { max-width: 39ch; color: var(--muted); font-size: 16px; }
.topic-hub .topic-planning-note { scroll-margin-top: 110px; }
.topic-hub .topic-planned-questions,
.topic-hub .topic-questions--later ul { list-style: none; padding: 0; margin: 0; }
.topic-hub .topic-planned-questions li,
.topic-hub .topic-questions--later li {
  margin: 0;
  padding: 19px 0;
  border-bottom: 1px solid var(--hairline);
  font: 500 clamp(19px, 1.6vw, 24px)/1.4 var(--font-display);
  text-wrap: pretty;
}
.topic-hub .topic-planned-questions li:first-child,
.topic-hub .topic-questions--later li:first-child { padding-top: 0; }
.topic-hub .topic-all-articles { min-height: 44px; padding-block: 8px; }

/* Published research is presented as an open shelf of illustrations and text. */
.topic-hub .topic-library { margin-bottom: 80px; scroll-margin-top: 110px; }
.topic-hub .topic-library > .topic-section-heading h2 { margin-bottom: 10px; }
.topic-hub .topic-library > .topic-section-heading p:not(.eyebrow) { color: var(--muted); font-size: 16px; }
.topic-hub .topic-filters { padding-block: 20px; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.topic-hub .topic-article-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  gap: 42px 30px;
}
.topic-hub .topic-article-grid > .card {
  flex: 0 0 calc((100% - 60px) / 3);
  min-width: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}
.topic-hub .topic-article-grid > .card:hover { box-shadow: none; transform: none; }
.topic-hub .topic-article-grid > .card > a img { height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: center top; border-radius: 2px; }
.topic-hub .topic-article .card-body { padding: 20px 0 0; }
.topic-hub .topic-article .pill { background: transparent; padding: 0; color: var(--teal); }
.topic-hub .topic-article :is(.pill,.topic-article-type,.meta-line,.evidence-unrated) { font: 400 14px/1.5 var(--font-body); text-transform: none; letter-spacing: 0; }
.topic-hub .topic-article :is(.topic-article-type,.meta-line,.evidence-unrated,.excerpt) { color: #555; }
.topic-hub .topic-article h3 { margin: 14px 0 12px; font-size: 24px; line-height: 1.25; }
.topic-hub .topic-article .excerpt { font-size: 15px; line-height: 1.6; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; }
.topic-hub .topic-empty { padding: 22px 0; border: 0; border-radius: 0; background: transparent; }
.topic-hub .topic-questions--later { margin: 0; padding-top: 36px; border-top: 1px solid var(--hairline); }
@media (max-width: 900px) {
  .topic-hub .topic-article-grid > .card { flex-basis: calc((100% - 30px) / 2); }
}
@media (max-width: 650px) {
  .topic-hub .topic-content { padding-block: 42px 56px; }
  .topic-hub .topic-planning,
  .topic-hub .topic-questions--later { grid-template-columns: 1fr; gap: 30px; }
  .topic-hub .topic-planning h2,
  .topic-hub .topic-questions--later h2 { font-size: 27px; }
  .topic-hub .topic-library { margin-bottom: 48px; }
  .topic-hub .topic-filters { gap: 16px 12px; }
  .topic-hub .topic-filters label { flex: 1 1 140px; min-width: 0; }
  .topic-hub .topic-filters select { width: 100%; }
}
@media (max-width: 600px) {
  .topic-hub .topic-article-grid > .card { flex-basis: 100%; }
}