.opt-comparison { margin-top: 28px; }
.opt-comparison .opt-comparison-controls { margin-bottom: 26px; padding: 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.opt-comparison [role="tablist"] { display: flex; flex-wrap: wrap; gap: 8px; }
.opt-comparison [data-lens-select] { flex: 1 1 130px; min-height: 44px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--paper); color: var(--ink); font: inherit; font-size: 0.9rem; line-height: 1.3; cursor: pointer; }
.opt-comparison [data-lens-select][aria-selected="true"] { border-color: var(--accent); background: var(--accent); color: white; font-weight: 700; }
.opt-comparison button:focus-visible, .opt-comparison input:focus-visible, .opt-comparison [role="tabpanel"]:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.opt-comparison fieldset { display: flex; flex-wrap: wrap; gap: 10px 22px; min-width: 0; margin: 18px 0 0; padding: 0; border: 0; }
.opt-comparison legend { margin-bottom: 8px; font-size: 0.85rem; font-weight: 700; }
.opt-comparison fieldset label { display: inline-flex; align-items: center; gap: 7px; font-size: 0.9rem; line-height: 1.4; cursor: pointer; }
.opt-comparison input { accent-color: var(--accent); }
.opt-comparison label:has(input:disabled) { color: var(--muted); cursor: default; }
.opt-comparison [data-focus-note] { margin: 12px 0 0; font-size: 0.85rem; line-height: 1.5; color: var(--muted); }
.opt-comparison-case { margin-top: 32px; }
.opt-comparison.is-enhanced .opt-comparison-case { margin-top: 0; }
.opt-comparison-case > h3 { margin-bottom: 12px; }
.opt-comparison-case .textbook-figure img { height: auto; }
.opt-comparison-case pre { max-width: 100%; margin: 14px 0 22px; padding: 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--soft); font-size: 0.83rem; line-height: 1.6; tab-size: 4; }
.opt-comparison-case code { font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
.opt-comparison-case pre code { font-size: inherit; }
@media (max-width: 780px) {
  .opt-comparison .opt-comparison-controls { padding: 14px; }
  .opt-comparison [data-lens-select] { flex-basis: 140px; }
}
@media print {
  .opt-comparison .opt-comparison-controls { display: none !important; }
  .opt-comparison .opt-comparison-case[hidden] { display: block !important; }
  .opt-comparison .opt-comparison-case { margin-top: 32px; }
  .opt-comparison .textbook-figure { width: 100%; margin-left: 0; transform: none; }
  .opt-comparison-case pre { white-space: pre-wrap; overflow-wrap: anywhere; }
}