/* v26: repair the measured 320px laboratory heading overflow.
 * Keep the existing palette, fonts, reveal effects and case-tab scrolling.
 * Do not mask layout errors with page-wide overflow:hidden.
 */
@media (max-width: 900px) {
  #lab .section-head {
    grid-template-columns: minmax(0, 1fr);
  }
  #lab .section-head > * {
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}
@media (max-width: 380px) {
  #lab .section-head h2 {
    font-size: clamp(26px, 8.6vw, 34px);
  }
}