.section-book { padding: 96px 48px; background: var(--acid); color: var(--black); display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; position: relative; }
.section-book::before {
  content: 'LIBRO';
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  font-family: var(--font-display);
  font-size: 200px;
  color: rgba(0,0,0,0.06);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
.book-label { font-size: 10px; letter-spacing: 5px; text-transform: uppercase; color: rgba(0,0,0,0.5); margin-bottom: 24px; }
.book-title { font-family: var(--font-display); font-size: clamp(48px, 5vw, 72px); line-height: 0.95; letter-spacing: -1px; margin-bottom: 24px; }
.book-subtitle { font-size: 16px; font-style: italic; color: rgba(0,0,0,0.6); margin-bottom: 32px; line-height: 1.6; }
.book-desc { font-size: 16px; line-height: 1.8; color: rgba(0,0,0,0.7); margin-bottom: 40px; }
.book-cover { display: flex; justify-content: center; width: 100%; }
.book-img {
  width: min(100%, 320px);
  height: auto;
  display: block;
}
.book-btn-mobile { display: none; }
.book-cover-placeholder { aspect-ratio: 3/4; background: rgba(0,0,0,0.15); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; }
.cover-icon { font-size: 48px; color: rgba(0,0,0,0.2); }
.cover-label { font-size: 10px; letter-spacing: 3px; text-transform: uppercase; color: rgba(0,0,0,0.3); }