/* ============================================================
   Homepage sections 2–6.

   Follows the visual language already established on this page:
   Literata for headings with tight tracking, Google Sans for body,
   teal #09bab2 as the single accent, sharp corners, hairline rules
   instead of shadows, and the shared --page-inset container.
   ============================================================ */

.hs {
  --hs-teal: #09bab2;
  --hs-teal-deep: #067a75;
  --hs-ink: #1c2b2a;
  --hs-ink-soft: #5c6866;
  --hs-line: #e3e6e5;
  --hs-line-soft: #eef1f0;
  --hs-paper: #ffffff;
  --hs-wash: #f7f9f8;
}

.hs-section {
  padding-block: clamp(64px, 8vw, 104px);
  padding-inline: var(--homepage-gutter, var(--page-inset));
  font-family: 'Google Sans', system-ui, sans-serif;
  color: var(--hs-ink);
  background: var(--hs-paper);
}

.hs-section--fullbleed {
  padding-inline: 0;
}

.hs-section__inner {
}

.hs-section--wash { background: var(--hs-wash); }
.hs-section--ruled { border-top: 1px solid var(--hs-line); }

/* ── Section heading ──────────────────────────────────────── */

.hs-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.hs-head__copy { max-width: 720px; }

.hs-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hs-teal-deep);
}

.hs-kicker::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--hs-teal);
}

.hs-title {
  margin: 0;
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.02;
  color: var(--hs-ink);
  text-wrap: balance;
}

.hs-lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.65;
  color: var(--hs-ink-soft);
}

.hs-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hs-teal-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
  white-space: nowrap;
  transition: color 250ms ease;
}

.hs-link:hover { color: var(--hs-ink); }
.hs-link .material-symbols-outlined { font-size: 17px; }

/* ── Quick access ─────────────────────────────────────────── */

.hs-shortcuts {
  border-bottom: 1px solid var(--hs-line);
}

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

.hs-shortcut {
  position: relative;
  display: flex;
  min-height: 250px;
  flex-direction: column;
  align-items: flex-start;
  padding: 28px;
  color: var(--hs-ink);
  background: var(--hs-paper);
  text-decoration: none;
  transition: background-color 250ms ease;
}

.hs-shortcut:hover { background: var(--hs-wash); }

.hs-shortcut__index {
  position: absolute;
  top: 22px;
  right: 24px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--hs-ink-soft);
  font-variant-numeric: tabular-nums;
}

.hs-shortcut__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  margin-bottom: 28px;
  border: 1px solid var(--hs-line);
  color: var(--hs-teal-deep);
  transition: color 250ms ease, background-color 250ms ease, border-color 250ms ease;
}

.hs-shortcut:hover .hs-shortcut__icon {
  color: #fff;
  border-color: var(--hs-teal);
  background: var(--hs-teal);
}

.hs-shortcut > strong {
  font-family: 'Literata', Georgia, serif;
  font-size: 23px;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.hs-shortcut > span:not(.hs-shortcut__index, .hs-shortcut__icon) {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.65;
  color: var(--hs-ink-soft);
}

.hs-shortcut > small {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 24px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hs-teal-deep);
}

.hs-shortcut > small .material-symbols-outlined {
  font-size: 16px;
  transition: transform 250ms ease;
}

.hs-shortcut:hover > small .material-symbols-outlined { transform: translateX(4px); }

/* ── 2. Faculty picks ─────────────────────────────────────── */

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

.hs-faculty__card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px 24px;
  background: var(--hs-paper);
  text-decoration: none;
  transition: background-color 250ms ease;
}

.hs-faculty__card:hover { background: var(--hs-wash); }

.hs-faculty__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--hs-line);
  color: var(--hs-teal-deep);
  transition: background-color 250ms ease, color 250ms ease, border-color 250ms ease;
}

.hs-faculty__card:hover .hs-faculty__icon {
  background: var(--hs-teal);
  border-color: var(--hs-teal);
  color: #fff;
}

.hs-faculty__icon .material-symbols-outlined { font-size: 24px; }

.hs-faculty__name {
  margin: 0;
  font-family: 'Literata', Georgia, serif;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--hs-ink);
}

.hs-faculty__count {
  font-size: 13px;
  color: var(--hs-ink-soft);
}

.hs-faculty__count b {
  font-size: 17px;
  font-weight: 700;
  color: var(--hs-ink);
  font-variant-numeric: tabular-nums;
}

.hs-faculty__cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: 6px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hs-teal-deep);
}

.hs-faculty__cta .material-symbols-outlined {
  font-size: 16px;
  transition: transform 250ms ease;
}

.hs-faculty__card:hover .hs-faculty__cta .material-symbols-outlined {
  transform: translateX(4px);
}

/* ── 3. New arrivals rail ─────────────────────────────────── */

.hs-rail { position: relative; overflow: hidden; }

.hs-rail--fullbleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.hs-rail__track {
  --hs-rail-gap: 20px;
  --hs-rail-half-gap: 10px;
  display: flex;
  align-items: stretch;
  gap: var(--hs-rail-gap);
  padding-bottom: 18px;
  width: max-content;
  min-width: 100%;
  scrollbar-width: thin;
  scrollbar-color: #c8d2d0 transparent;
}

.hs-rail__track > * {
  flex: 0 0 clamp(240px, 27vw, 360px);
  display: flex;
  align-self: stretch;
}
.hs-rail__track::-webkit-scrollbar { height: 5px; }
.hs-rail__track::-webkit-scrollbar-thumb { background: #c8d2d0; }

/* Book card — real cover when supplied, otherwise one neutral placeholder. */
.hs-book {
  display: flex;
  flex-direction: column;
  height: clamp(560px, 58vw, 640px);
  width: 100%;
  border: 1px solid var(--hs-line);
  background: var(--hs-paper);
  overflow: hidden;
  transition: border-color 250ms ease;
}

.hs-book:hover { border-color: var(--hs-teal); }

.hs-book__cover {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: clamp(300px, 34vw, 480px);
  aspect-ratio: auto;
  flex: 0 0 auto;
  padding: 16px;
  background: linear-gradient(155deg, #31403d, #172624);
  color: #fff;
  overflow: hidden;
}

/* Keep the same polished colour language as the catalogue covers. */
.hs-book--navy .hs-book__cover {
  background:
    radial-gradient(circle at 18% 20%, rgba(159, 198, 255, .26), transparent 28%),
    linear-gradient(135deg, #163450 0%, #0c2138 100%);
}

.hs-book--wine .hs-book__cover {
  background:
    linear-gradient(145deg, rgba(255,255,255,.08), transparent 34%),
    linear-gradient(135deg, #6f1d2d 0%, #441019 100%);
}

.hs-book--forest .hs-book__cover {
  background:
    radial-gradient(circle at 82% 18%, rgba(145, 239, 198, .22), transparent 26%),
    linear-gradient(135deg, #1e5a46 0%, #12372a 100%);
}

.hs-book--wood .hs-book__cover {
  background:
    linear-gradient(135deg, rgba(255,255,255,.1), transparent 42%),
    repeating-linear-gradient(90deg, rgba(255,228,196,.08) 0 10px, transparent 10px 18px),
    linear-gradient(135deg, #6c4428 0%, #3d2416 100%);
}

.hs-book--plum .hs-book__cover {
  background:
    radial-gradient(circle at 20% 78%, rgba(255,220,245,.18), transparent 28%),
    linear-gradient(135deg, #54406d 0%, #2e2240 100%);
}

.hs-book__cover::before {
  content: '';
  position: absolute;
  inset-block: 0;
  left: 9px;
  width: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.hs-book__cover--image { padding: 0; }

.hs-book__cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hs-book__cover--image .hs-book__udc { display: none; }

.hs-book__placeholder-icon {
  position: static;
  font-size: 38px;
  color: rgba(255, 255, 255, 0.72);
}

/* A missing cover must still identify the real bibliographic record. */
.hs-book__placeholder-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  max-width: 92%;
  color: #fff;
}

.hs-book__placeholder-copy strong {
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(17px, 1.45vw, 23px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hs-book__placeholder-copy small {
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hs-book__udc {
  align-self: flex-start;
  padding: 3px 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.hs-book__sign {
  align-self: flex-end;
  font-family: 'Literata', Georgia, serif;
  font-size: 34px;
  line-height: 1;
  opacity: 0.82;
}

.hs-book__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
  padding: 18px;
  overflow: hidden;
}

.hs-book__title {
  margin: 0;
  font-family: 'Literata', Georgia, serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--hs-ink);
  overflow: hidden;
  height: calc(1.3em * 2);
}

.hs-book__title a {
  color: inherit;
  text-decoration: none;
}

.hs-book__title a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.hs-book__author {
  margin: 0;
  font-size: 13.5px;
  color: var(--hs-ink-soft);
  overflow: hidden;
  height: calc(1.35em);
}

.hs-book__meta {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--hs-ink-soft);
  min-height: calc(1.5em * 2);
  overflow: hidden;
}

.hs-book__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 12.5px;
  font-weight: 700;
  color: #0f7a52;
}

.hs-book__status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.hs-book__status--out { color: #a4531f; }
.hs-book__status--pending { color: #68736f; }

.hs-book__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: auto;
  padding: 10px 14px;
  border: 1px solid var(--hs-ink);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hs-ink);
  text-decoration: none;
  transition: background-color 250ms ease, color 250ms ease, border-color 250ms ease;
}

.hs-book__cta:hover {
  background: var(--hs-ink);
  color: #fff;
}

/* ── 4. Collections ───────────────────────────────────────── */

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

.hs-collection {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px;
  background: var(--hs-paper);
  text-decoration: none;
  transition: background-color 250ms ease;
}

.hs-collection:hover { background: var(--hs-wash); }

.hs-collection__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.hs-collection__icon {
  display: inline-flex;
  color: var(--hs-teal-deep);
}

.hs-collection__icon .material-symbols-outlined { font-size: 26px; }

.hs-collection__udc {
  padding: 3px 8px;
  border: 1px solid var(--hs-line);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--hs-ink-soft);
}

.hs-collection__name {
  margin: 0;
  font-family: 'Literata', Georgia, serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--hs-ink);
}

.hs-collection__count {
  font-size: 13px;
  font-weight: 700;
  color: var(--hs-teal-deep);
  font-variant-numeric: tabular-nums;
}

.hs-collection__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--hs-ink-soft);
}

/* ── 5. Statistics ────────────────────────────────────────── */

.hs-stats-layout {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 6vw, 88px);
}

.hs-stats-layout > .hs-head__copy {
  flex: 0 1 38%;
  align-self: flex-start;
}

.hs-stats {
  flex: 1 1 62%;
  display: grid;
  border-top: 1px solid var(--hs-line);
}

.hs-stat {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  grid-template-areas:
    "icon value number"
    "icon label number";
  align-items: center;
  gap: 4px 20px;
  min-height: 142px;
  padding: 26px 0;
  border-bottom: 1px solid var(--hs-line);
}

.hs-stat::before,
.hs-stat::after {
  content: '';
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

/* Each fact carries its own quiet library motif: book edges, catalogue dots
   and the concentric geometry of a reading room. */
.hs-stat:nth-child(1)::before {
  top: 22px;
  right: 38px;
  width: 112px;
  height: 96px;
  opacity: 0.42;
  background:
    linear-gradient(90deg, transparent 13px, rgba(9, 186, 178, .2) 13px 14px, transparent 14px),
    repeating-linear-gradient(0deg, rgba(28, 43, 42, .1) 0 1px, transparent 1px 13px);
  transform: skewY(-4deg);
}

.hs-stat:nth-child(1)::after {
  top: 16px;
  right: 29px;
  width: 5px;
  height: 108px;
  border: 1px solid rgba(9, 186, 178, .28);
  border-block-width: 0;
}

.hs-stat:nth-child(2)::before {
  top: 18px;
  right: 28px;
  width: 118px;
  height: 106px;
  opacity: 0.52;
  background-image: radial-gradient(circle, rgba(7, 138, 132, .23) 1.2px, transparent 1.4px);
  background-size: 12px 12px;
  -webkit-mask-image: linear-gradient(125deg, transparent 4%, #000 38%, #000 72%, transparent 96%);
  mask-image: linear-gradient(125deg, transparent 4%, #000 38%, #000 72%, transparent 96%);
}

.hs-stat:nth-child(2)::after {
  top: 50%;
  right: 24px;
  width: 126px;
  height: 1px;
  background: rgba(9, 186, 178, .24);
  transform: rotate(-28deg);
}

.hs-stat:nth-child(3)::before {
  top: 8px;
  right: -28px;
  width: 136px;
  height: 136px;
  border-radius: 50%;
  opacity: 0.62;
  background: repeating-radial-gradient(
    circle,
    transparent 0 12px,
    rgba(9, 186, 178, .18) 12px 13px
  );
}

.hs-stat:nth-child(3)::after {
  right: 39px;
  bottom: 18px;
  width: 58px;
  height: 58px;
  border: 1px solid rgba(28, 43, 42, .1);
  transform: rotate(45deg);
}

.hs-stat::before,
.hs-stat::after {
  transition: opacity 250ms ease, transform 420ms cubic-bezier(.2, .8, .2, 1);
}

.hs-stat:hover::before { opacity: 0.9; }
.hs-stat:nth-child(1):hover::before { transform: skewY(-4deg) translateX(-5px); }
.hs-stat:nth-child(2):hover::before { transform: translateX(-5px); }
.hs-stat:nth-child(3):hover::before { transform: rotate(8deg) scale(1.04); }

.hs-stat__number {
  grid-area: number;
  align-self: start;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--hs-ink-soft);
  font-variant-numeric: tabular-nums;
  z-index: 1;
}

.hs-stat__icon {
  grid-area: icon;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--hs-line);
  color: var(--hs-teal-deep);
  transition: color 250ms ease, background-color 250ms ease, border-color 250ms ease;
  z-index: 1;
}

.hs-stat:hover .hs-stat__icon {
  color: #fff;
  border-color: var(--hs-teal);
  background: var(--hs-teal);
}

.hs-stat__value {
  grid-area: value;
  display: block;
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.95;
  color: var(--hs-ink);
  font-variant-numeric: tabular-nums;
  z-index: 1;
}

.hs-stat__label {
  grid-area: label;
  display: block;
  margin-top: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hs-ink-soft);
  z-index: 1;
}

/* ── 6. FAQ ───────────────────────────────────────────────── */

.hs-faq {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hs-line);
}

.hs-faq__item { border-bottom: 1px solid var(--hs-line); }

.hs-faq__item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  list-style: none;
  cursor: pointer;
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--hs-ink);
  transition: color 250ms ease;
}

.hs-faq__item summary::-webkit-details-marker { display: none; }
.hs-faq__item summary:hover { color: var(--hs-teal-deep); }

.hs-faq__sign {
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--hs-teal-deep);
  transition: transform 250ms ease;
}

.hs-faq__item[open] .hs-faq__sign { transform: rotate(180deg); }

.hs-faq__answer {
  margin: 0;
  padding: 0 clamp(20px, 6vw, 64px) 24px 0;
  max-width: 82ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--hs-ink-soft);
}

.hs-faq__more { margin-top: 32px; }

/* ── Focus ────────────────────────────────────────────────── */

.hs a:focus-visible,
.hs button:focus-visible,
.hs summary:focus-visible {
  outline: 2px solid var(--hs-teal-deep);
  outline-offset: 3px;
}

/* ── Breakpoints ──────────────────────────────────────────── */

@media (min-width: 640px) {
  .hs-shortcuts__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hs-faculty,
  .hs-collections { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .hs-stats-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .hs-faculty { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .hs-collections { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

/* ── Motion preferences ───────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .hs *,
  .hs *::before,
  .hs *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

  .hs-rail__track { scroll-behavior: auto; }
}

@media (forced-colors: active) {
  .hs-stat::before,
  .hs-stat::after {
    display: none;
  }
}

/* ============================================================
   Homepage editorial refinement.

   These rules intentionally stay behind homepage section markers. They add
   a reader-controlled book rail, a compact subject index, and two deliberate
   closing beats without changing the shared public shell or assistant.
   ============================================================ */

.hs-link .material-symbols-outlined {
  transition: transform 220ms ease;
}

.hs-link:is(:hover, :focus-visible) .material-symbols-outlined {
  transform: translateX(3px);
}

/* New arrivals: a shelf readers move themselves, never a moving marquee. */
[data-section="homepage-new-arrivals"] {
  padding-block: clamp(76px, 7vw, 98px);
  border-top: 1px solid var(--hs-line);
  border-bottom: 1px solid var(--hs-line);
  background: #fbfaf6;
}

[data-section="homepage-new-arrivals"] .hs-head--arrivals {
  align-items: flex-end;
  margin-bottom: clamp(26px, 3vw, 38px);
}

.hs-rail-controls {
  display: flex;
  align-items: center;
  gap: 22px;
}

.hs-rail-controls__buttons {
  display: inline-flex;
  gap: 8px;
}

.hs-rail-control {
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(28, 43, 42, .24);
  border-radius: 0;
  background: transparent;
  color: var(--hs-ink);
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.hs-rail-control .material-symbols-outlined { font-size: 19px; }

.hs-rail-control:is(:hover, :focus-visible) {
  border-color: var(--hs-teal-deep);
  background: var(--hs-paper);
  color: var(--hs-teal-deep);
}

.hs-rail-control:disabled {
  border-color: rgba(28, 43, 42, .1);
  color: rgba(28, 43, 42, .3);
  cursor: default;
}

[data-section="homepage-new-arrivals"] .hs-rail {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: inline mandatory;
  scroll-padding-inline: var(--homepage-gutter, var(--page-inset));
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
  scrollbar-color: #aebbb8 transparent;
}

[data-section="homepage-new-arrivals"] .hs-rail::-webkit-scrollbar { height: 5px; }
[data-section="homepage-new-arrivals"] .hs-rail::-webkit-scrollbar-thumb { background: #aebbb8; }

[data-section="homepage-new-arrivals"] .hs-rail__track {
  width: max-content;
  min-width: 100%;
  gap: 20px;
  padding-inline: var(--homepage-gutter, var(--page-inset));
  padding-bottom: 20px;
  transform: none !important;
  animation: none !important;
}

[data-section="homepage-new-arrivals"] .hs-rail__track > * {
  flex: 0 0 clamp(254px, 22vw, 316px);
  scroll-snap-align: start;
  scroll-snap-stop: normal;
}

[data-section="homepage-new-arrivals"] .hs-book {
  height: clamp(525px, 44vw, 570px);
  border-color: rgba(28, 43, 42, .16);
}

[data-section="homepage-new-arrivals"] .hs-book__cover {
  height: clamp(300px, 28vw, 366px);
}

[data-section="homepage-new-arrivals"] .hs-book__cover-image {
  transition: transform 420ms cubic-bezier(.2, .7, .2, 1), filter 280ms ease;
}

[data-section="homepage-new-arrivals"] .hs-book:is(:hover, :focus-within) .hs-book__cover-image {
  transform: scale(1.018);
  filter: saturate(1.04);
}

.hs-book__placeholder-mark {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  align-items: flex-start;
  padding-left: 7px;
  color: rgba(255, 255, 255, .82);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.35;
  text-transform: uppercase;
}

.hs-book__placeholder-mark small {
  color: rgba(255, 255, 255, .6);
  font-size: 7px;
  font-weight: 600;
  letter-spacing: .08em;
}

/* Subject collections read as a compact index rather than ten more cards. */
[data-section="homepage-collections"] {
  padding-block: clamp(74px, 7vw, 96px);
}

[data-section="homepage-collections"] .hs-head {
  margin-bottom: clamp(26px, 3vw, 38px);
}

[data-section="homepage-collections"] .hs-collections {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

[data-section="homepage-collections"] .hs-collection {
  position: relative;
  min-height: 184px;
  padding: 22px 52px 22px 22px;
  transition: background-color 200ms ease, box-shadow 200ms ease;
}

[data-section="homepage-collections"] .hs-collection:is(:hover, :focus-visible) {
  background: #f4f8f7;
  box-shadow: inset 0 2px 0 var(--hs-teal);
}

.hs-collection__action {
  position: absolute;
  right: 20px;
  bottom: 20px;
  color: rgba(28, 43, 42, .42);
  font-size: 18px;
  transition: color 200ms ease, transform 200ms ease;
}

.hs-collection:is(:hover, :focus-visible) .hs-collection__action {
  color: var(--hs-teal-deep);
  transform: translate(2px, -2px);
}

/* The assistant is an academic service in the page story, not a pop-up ad. */
.homepage-ai-feature {
  padding: clamp(72px, 7vw, 96px) var(--homepage-gutter, var(--page-inset));
  border-bottom: 1px solid rgba(16, 41, 69, .1);
  background:
    linear-gradient(90deg, rgba(9, 186, 178, .035), transparent 30%),
    #eef4f2;
}

.homepage-ai-feature__frame {
  position: relative;
  isolation: isolate;
}

.homepage-ai-feature__frame::before {
  content: "KAZUTB / AI BIBLIOGRAPHER";
  display: block;
  margin-bottom: 13px;
  color: #43615e;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .17em;
}

.homepage .homepage-ai-feature .ai-advisor-banner {
  overflow: hidden;
  border: 1px solid rgba(9, 52, 66, .2);
  border-radius: 0;
  box-shadow: 0 22px 60px -52px rgba(7, 35, 50, .75);
}

.homepage .homepage-ai-feature .ai-advisor-banner__intro {
  padding: clamp(25px, 3vw, 38px);
  background:
    radial-gradient(ellipse at 8% 60%, rgba(20, 132, 128, .48), transparent 68%),
    linear-gradient(125deg, #092d41, #071e32);
}

.homepage .homepage-ai-feature .ai-advisor-banner h2.ai-advisor-banner__title {
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(27px, 2.6vw, 39px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -.04em;
}

.homepage .homepage-ai-feature .ai-advisor-banner__workspace {
  padding: clamp(26px, 3vw, 40px);
  background:
    radial-gradient(ellipse at 100% 100%, rgba(9, 186, 178, .1), transparent 58%),
    #fbfcfa;
}

/* A composed last decision point before the global footer. */
.homepage-support-close {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) auto;
  gap: clamp(26px, 5vw, 72px);
  align-items: center;
  margin-top: clamp(60px, 7vw, 92px);
  padding: clamp(30px, 4vw, 52px);
  border-top: 2px solid #b26f52;
  background:
    linear-gradient(108deg, #0c3141 0%, #0a2938 72%, #123e45 100%);
  color: #fff;
}

.homepage-support-close__copy > p {
  margin: 0 0 10px;
  color: #8ee0d8;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.homepage-support-close__copy h3 {
  margin: 0;
  color: #fff;
  font-family: 'Literata', Georgia, serif;
  font-size: clamp(24px, 2.7vw, 37px);
  font-weight: 650;
  letter-spacing: -.035em;
  line-height: 1.08;
}

.homepage-support-close__copy > span {
  display: block;
  max-width: 62ch;
  margin-top: 12px;
  color: rgba(233, 245, 245, .76);
  font-size: 14px;
  line-height: 1.65;
}

.homepage-support-close__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.homepage-support-close__actions :is(a, button) {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 17px;
  border: 1px solid rgba(255, 255, 255, .42);
  border-radius: 0;
  background: transparent;
  color: #fff;
  font: 700 12px/1.25 'Google Sans', system-ui, sans-serif;
  letter-spacing: .055em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.homepage-support-close__actions .homepage-support-close__primary {
  border-color: #83dcd5;
  background: #83dcd5;
  color: #082834;
}

.homepage-support-close__actions :is(a, button):is(:hover, :focus-visible) {
  border-color: #fff;
  background: #fff;
  color: #082834;
}

.homepage-support-close__actions .material-symbols-outlined { font-size: 17px; }

@media (min-width: 1024px) {
  [data-section="homepage-collections"] .hs-collections {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  [data-section="homepage-collections"] .hs-collection {
    min-height: 202px;
    padding: 24px 42px 24px 20px;
  }

  [data-section="homepage-collections"] .hs-collection__desc {
    display: none;
  }
}

@media (max-width: 760px) {
  [data-section="homepage-new-arrivals"] {
    padding-block: 66px;
  }

  [data-section="homepage-new-arrivals"] .hs-head--arrivals {
    align-items: flex-start;
    margin-bottom: 25px;
  }

  .hs-rail-controls {
    width: 100%;
    justify-content: space-between;
    gap: 14px;
  }

  [data-section="homepage-new-arrivals"] .hs-rail__track {
    gap: 14px;
    padding-bottom: 15px;
  }

  [data-section="homepage-new-arrivals"] .hs-rail__track > * {
    flex-basis: min(80vw, 292px);
  }

  [data-section="homepage-new-arrivals"] .hs-book {
    height: 508px;
  }

  [data-section="homepage-new-arrivals"] .hs-book__cover {
    height: 278px;
  }

  [data-section="homepage-collections"] {
    padding-block: 68px;
  }

  [data-section="homepage-collections"] .hs-collections {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  [data-section="homepage-collections"] .hs-collection {
    min-height: 148px;
    gap: 8px;
    padding: 17px 34px 17px 15px;
  }

  [data-section="homepage-collections"] .hs-collection__icon .material-symbols-outlined {
    font-size: 21px;
  }

  [data-section="homepage-collections"] .hs-collection__udc {
    padding: 2px 5px;
    font-size: 9px;
  }

  [data-section="homepage-collections"] .hs-collection__name {
    font-size: clamp(14px, 4.2vw, 17px);
    line-height: 1.18;
  }

  [data-section="homepage-collections"] .hs-collection__count {
    font-size: 11px;
  }

  [data-section="homepage-collections"] .hs-collection__desc {
    display: none;
  }

  [data-section="homepage-collections"] .hs-collection__action {
    right: 12px;
    bottom: 13px;
    font-size: 16px;
  }

  .homepage-ai-feature {
    padding: 66px var(--homepage-gutter, var(--page-inset));
  }

  .homepage .homepage-ai-feature .ai-advisor-banner {
    grid-template-columns: minmax(0, 1fr);
    border-radius: 0;
  }

  .homepage .homepage-ai-feature .ai-advisor-banner__intro,
  .homepage .homepage-ai-feature .ai-advisor-banner__workspace {
    padding: 22px;
  }

  .homepage .homepage-ai-feature .ai-advisor-banner__identity {
    align-items: flex-start;
  }

  .homepage .homepage-ai-feature .ai-advisor-banner__mark {
    width: 54px;
    height: 54px;
  }

  .homepage .homepage-ai-feature .ai-advisor-banner h2.ai-advisor-banner__title {
    font-size: clamp(24px, 7vw, 30px);
  }

  .homepage-support-close {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 26px 22px;
  }

  .homepage-support-close__actions {
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  .homepage-support-close__actions :is(a, button) {
    width: 100%;
  }
}