.donor-finder { margin: 0 0 20px; padding: 16px; border: 1px solid var(--border);
  border-radius: 12px; background: var(--bg-card); color: var(--text-primary); }
.donor-finder[hidden], #donorMore[hidden] { display: none; }
.donor-finder summary { cursor: pointer; font-weight: 650; }
.donor-finder p { font-size: 14px; line-height: 1.55; }
.donor-form { display: grid; grid-template-columns: 90px repeat(3,minmax(0,1fr));
  gap: 12px; align-items: end; }
.donor-form label { display: grid; gap: 6px; font-size: 13px; min-width: 0; }
.donor-form input { box-sizing: border-box; width: 100%; min-width: 0; font: inherit;
  font-size: 16px; background: var(--bg-page); color: var(--text-primary);
  border: 1px solid var(--border); border-radius: 7px; padding: 10px; }
.donor-finder button { font: inherit; padding: 10px 14px; border: 0; border-radius: 8px;
  background: var(--accent); color: var(--accent-ink); cursor: pointer; }
.donor-form button { grid-column: 1 / -1; justify-self: start; }
.donor-finder button:disabled { opacity: .6; cursor: wait; }
.donor-note { color: var(--text-muted); }
.donor-results { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.donor-car { padding: 14px; background: var(--bg-page); border: 1px solid var(--border);
  border-radius: 8px; overflow-wrap: anywhere; }
.donor-car h3 { font-size: 16px; margin: 0 0 8px; }
.donor-car p { margin: 5px 0; }
#donorMore { margin-top: 12px; }
@media (max-width: 600px) {
  .donor-form { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .donor-results { grid-template-columns: minmax(0,1fr); }
  .donor-form button { width: 100%; }
}
.cross-card { margin: 12px 0; padding: 12px; border: 1px solid var(--border, #ccc); border-radius: 8px; overflow-wrap: anywhere; min-width: 0; }
#crossModel { margin: 20px 0; overflow-wrap: anywhere; }
#crossModel summary { cursor: pointer; padding: 8px 0; }
#crossModel button { margin: 8px; min-height: 44px; }
#crossModel .math-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }