.abstract-series { display: flex; gap: 12px; overflow-x: auto; padding: 12px 2px 18px; margin-bottom: 14px; }
.abstract-series figure { flex: 0 0 clamp(132px, 13vw, 180px); margin: 0; }
.abstract-series figcaption { text-align: center; font: 12px var(--mono); margin-top: 6px; }
.abstract-series svg, .abstract-options svg, .abstract-comparison svg, .abstract-initial-svg svg { display: block; width: 100%; height: auto; }
.abstract-capture { overflow-x: auto; padding: 8px 2px 14px; margin-bottom: 8px; }
.abstract-capture img { display: block; width: 100%; min-width: 560px; max-width: 920px; height: auto; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
.abstract-option-img { display: block; width: 100%; height: auto; border-radius: 3px; background: #fff; }
.abstract-note { padding: 10px 14px; border-left: 3px solid #b42318; background: #fff5f3; margin: 8px 0; font-size: 14px; }
.abstract-note.satisfied { border-color: #067647; background: #edf5f0; }
.abstract-missing { aspect-ratio: 1; display: grid; place-items: center; font: 50px var(--mono); border: 2px dashed var(--line); border-radius: 6px; }
.abstract-options { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin: 16px 0; }
.abstract-options figure { margin: 0; }
.abstract-options figcaption { font-size: 12px; margin-top: 6px; }
.abstract-options .answer-option { display: grid; grid-template-columns: 20px 1fr; gap: 8px; padding: 10px; min-width: 0; }
.abstract-options .option-content { width: 100%; grid-column: 1 / -1; }
.abstract-options input { margin: 0; align-self: center; }
.abstract-options .option-letter { text-align: center; justify-self: start; }
.abstract-options .answer-option:focus-within { outline: 3px solid var(--accent); outline-offset: 3px; }
.abstract-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 280px)); gap: 24px; margin: 20px 0; }
.abstract-comparison figure { margin: 0; }
.abstract-comparison figcaption { font-size: 13px; margin: 8px 0; }
.abstract-checks { list-style: none; padding: 0; }
.abstract-checks li { padding: 10px 14px; border-left: 3px solid #067647; margin-bottom: 8px; background: #edf5f0; font-size: 14px; }
.abstract-checks li.violated { border-color: #b42318; background: #fff5f3; }
.abstract-rule { background: #dcfae6; color: #085d3a; border-radius: 6px; padding: 16px; margin: 18px 0; }
.abstract-rule p:last-child { margin-bottom: 0; }
.abstract-initial-svg { max-width: 220px; margin: 16px 0; }
.abstract-source-guide { margin-top: 16px; }
.abstract-screen .maths-summary-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.abstract-screen .answer-fieldset { min-width: 0; }
.abstract-screen fieldset legend { font-size: 18px; }
@media (max-width: 700px) {
  .abstract-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .abstract-series figure { flex-basis: 145px; }
  .abstract-screen .maths-summary-grid { grid-template-columns: 1fr; }
  .abstract-comparison { gap: 12px; }
}