/* Topic 2 shares the course typography; these rules only size its semantic figures and controls. */
.topic2-geometry { display: block; width: 100%; max-width: 440px; height: auto; color: var(--ink); margin: 8px 0; }
.topic2-geometry .diagram-label { color: var(--ink); font-size: 15px; line-height: 1.3; }
.topic2-lab { max-width: var(--reading); margin: 18px 0 23px; }
.topic2-lab-title { font: 700 18px/1.4 var(--sans); margin-bottom: 8px; }
.topic2-description { font: 16px/1.5 var(--sans); color: var(--muted); margin-bottom: 10px; }
.topic2-adjustments > summary { font: 650 16px/1.4 var(--sans); padding: 12px 0; min-height: 44px; }
.topic2-controls { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px 20px; font: 16px/1.5 var(--sans); margin: 10px 0 16px; }
.topic2-controls label { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.topic2-controls label > span { font-weight: 600; }
.topic2-controls input, .topic2-controls select { width: 100%; min-height: 44px; padding: 7px; color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 0; font: 16px/1.4 var(--sans); }
.topic2-controls input[type=range] { padding: 0; accent-color: var(--ink); }
.topic2-controls input:disabled { opacity: .45; }
.topic2-output { font: inherit; }
.topic2-output > p { margin-bottom: 12px; }
.topic2-output .katex-display { margin: 12px 0; }
.topic2-output table { width: auto; }
.topic2-output caption { white-space: nowrap; }
@media (max-width:650px) {
  .topic2-controls { grid-template-columns: 1fr; gap: 12px; }
  .topic2-lab { max-width: 100%; }
  .topic2-lab .diagram-pair { display: block; }
  .topic2-output .geometry { max-width: 420px; }
}
@media print {
  .topic2-lab { display: none; }
  .topic2-geometry { max-width: 110mm; }
}