/* Book Introductions adds two clear shelves without another crowded catalogue. */
.books-page h1, .books-page h2, .books-page h3 { overflow-wrap: anywhere; }
.books-total { border-top: 1px solid var(--cream-border); padding: 1rem 0; margin: 0; color: var(--ink-light); font: .72rem/1.8 var(--sans); }
.books-doors { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.books-door { display: flex; flex-direction: column; padding: 2rem; border: 1px solid var(--cream-border); color: var(--green); text-decoration: none; }
.books-door:hover { background: var(--cream-dark); border-color: var(--gold); }
.books-door h2 { font: 400 clamp(2rem, 4vw, 3.4rem)/1.2 var(--serif); margin: .5rem 0 1rem; }
.books-door h2.lang-zh, .books-door h2.lang-hant { font-size: 2rem; line-height: 1.5; }
.books-door-deck { font-size: 1.08rem; line-height: 1.8; color: var(--ink-light); margin: 0 0 1.5rem; }
.books-featured { margin-top: 3rem; }
.books-featured > h2, .books-section-heading h2 { font-size: 1.8rem; font-weight: 400; line-height: 1.5; margin: 0; }
.books-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.books-section-heading > a { color: var(--green); font: .72rem/1.6 var(--sans); text-underline-offset: .25em; }
.books-section-note { color: var(--ink-muted); font-size: .84rem; line-height: 1.8; margin: .5rem 0 1.3rem; }
@media (max-width: 760px) {
  .books-doors { grid-template-columns: 1fr; }
  .books-door { padding: 1.4rem; }
  .books-section-heading { flex-direction: column; gap: .5rem; }
}