.chapter-grid { display: grid; gap: 22px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.chapter-card { background: #fffdf8; border-top: 4px solid #e2ba60; box-shadow: 0 12px 28px rgba(73,16,29,.08); padding: 28px; }
.chapter-card h3 { color: #6c1825; font-size: 22px; margin: 0 0 12px; }
.chapter-card p { font-size: 16px; line-height: 1.65; margin: 0; }
.chapter-card .note { color: #922237; font-size: 13px; font-weight: 700; margin-top: 12px; }
.chapter-mark { align-items: center; background: #6c1825; color: #e2ba60; display: inline-flex; font: 700 13px/1 Montserrat, sans-serif; height: 34px; justify-content: center; margin-bottom: 18px; width: 34px; }
@media (max-width: 1000px) { .chapter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .chapter-grid { grid-template-columns: 1fr; } }

/* Modern Heritage refinement. */
.modern-heritage .chapter-card.mh-surface-card{border-top:4px solid #e2ad32;background:rgba(255,253,249,.94);transition:transform .22s ease,box-shadow .22s ease}
.modern-heritage .chapter-card.mh-surface-card:hover{transform:translateY(-5px);box-shadow:0 22px 48px rgba(73,16,29,.14)}
.modern-heritage .chapter-mark{border-radius:50%;box-shadow:0 7px 18px rgba(73,16,29,.16)}
@media(prefers-reduced-motion:reduce){.modern-heritage .chapter-card.mh-surface-card{transition:none}.modern-heritage .chapter-card.mh-surface-card:hover{transform:none}}