.rich-copy .geology-photo { margin: 1.5rem 0 2rem; padding: 1rem; border: 1px solid var(--line); background: #fff; }
.geology-photo img { display: block; width: 100%; max-width: 800px; height: auto; margin: auto; }
.rich-copy .geology-photo figcaption, .rich-copy .geology-bracket figcaption { margin-top: 1rem; font-size: 1rem; line-height: 1.65; }
.geology-image-credit { display: block; margin-top: .5rem; font-size: .9rem; overflow-wrap: anywhere; }
.rich-copy .geology-bracket { margin: 1.5rem 0 2rem; padding: 0; }
.geology-layer { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .75rem; align-items: center; padding: 1rem; border: 1px solid var(--night); background: #e3efea; font-size: 1rem; line-height: 1.6; }
.geology-layer + .geology-layer { border-top: 0; }
.geology-layer-fossil { background: var(--yellow-soft); }
.geology-layer strong { font-size: 1.1rem; }
.rich-copy .geology-check { margin: 1.25rem 0 2rem; padding: 1rem; border-left: 4px solid var(--night); background: var(--yellow-soft); }
.rich-copy .geology-check p { margin: 0 0 .75rem; }
.rich-copy .geology-check details { margin: 0; }
.geology-check summary { min-height: 44px; padding: .5rem 0; cursor: pointer; font-weight: 800; }
.geology-check summary:focus-visible { outline: 3px solid var(--night); outline-offset: 3px; }
@media (max-width: 650px) {
  .geology-layer { grid-template-columns: minmax(0, 1fr); gap: .25rem; }
  .rich-copy .geology-photo { padding: .5rem; }
}