.handbooks-gallery .gallery-shell {
  width: min(100%, 78rem);
  min-height: 100svh;
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.gallery-intro { padding-block: clamp(3rem, 7vw, 5.5rem) 2.75rem; }
.gallery-rule { width: 4rem; height: 1px; background: var(--ink); }

.gallery-intro h1 {
  margin: 1.6rem 0 0;
  font-size: clamp(3.3rem, 6.5vw, 5.5rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1;
}

.handbook-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
  gap: 2.75rem;
  padding-bottom: 4rem;
}

.handbook-card { min-width: 0; }
.handbook-card-link { display: block; text-decoration: none; }
.handbook-cover { border: 1px solid var(--line); background: var(--paper); }
.handbook-cover img { display: block; width: 100%; height: auto; }

@view-transition { navigation: none; }

/* Clip the long reader during the opening so the compositor only moves one
   viewport of paper, rather than a layer containing the entire handbook. */
html { scrollbar-gutter: stable; }
.handbook-reader.is-opening { height: 100svh; overflow: clip; }

/* Both views are built into the page, including the no-JavaScript routes. */
.handbooks-gallery .handbook-reader,
.handbooks-reader .gallery-shell,
.handbooks-reader > .skip-link { display: none; }

.handbook-departure {
  position: fixed;
  z-index: 1000;
  min-height: 100svh;
  padding-inline: var(--page-gutter);
  background: var(--paper);
  pointer-events: none;
}

.handbook-opening-cover {
  position: fixed;
  z-index: 1001;
  border: 1px solid var(--line);
  background: var(--paper);
  transform-origin: left center;
  backface-visibility: hidden;
  box-shadow: 0 16px 38px -20px rgb(0 0 0 / 24%);
  pointer-events: none;
  will-change: transform;
}

.handbook-opening-cover img { display: block; width: 100%; height: 100%; }

@media (hover: hover) and (pointer: fine) {
  .handbook-cover {
    transition: transform 450ms cubic-bezier(0.22, 1, 0.36, 1),
      box-shadow 450ms ease, border-color 250ms ease;
  }
  .handbook-card-link:hover .handbook-cover {
    transform: translateY(-4px);
    box-shadow: 0 14px 30px -20px rgb(0 0 0 / 22%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .handbook-cover { transition: none; }
  .handbook-card-link:hover .handbook-cover { transform: none; }
}

.handbook-card-link:hover .handbook-cover,
.handbook-card-link:focus-visible .handbook-cover { border-color: var(--ink); }

.gallery-footer {
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72rem;
}

.gallery-footer p { margin: 0; }
.handbooks-return { display: block; padding: 0.65rem 1.75rem; font-size: 0.72rem; }
.handbooks-return-mobile { display: none; }

@media (max-width: 60rem) {
  .handbooks-return { display: none; }
  .handbooks-return-mobile {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 2.75rem;
    min-height: 2.75rem;
    text-decoration: none;
  }
}

@media (max-width: 600px) {
  .gallery-intro { padding-bottom: 2rem; }
  .handbook-grid { gap: 2rem; }
}

@media print {
  .handbooks-return, .handbooks-return-mobile, .handbook-departure, .handbook-opening-cover { display: none; }
  .handbook-card { break-inside: avoid; }
}