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th{background:var(--soft)}.ds-conclusion{margin-top:20px!important;padding:14px 17px;border-left:4px solid #d27c1c;background:#fff8e8;border-radius:0 8px 8px 0}.ds-exercises{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.ds-exercise{min-width:0;margin:0;padding:18px;border:1px solid var(--line);border-radius:11px}.ds-exercise legend{font-weight:750}.ds-exercise legend span{display:inline-grid;place-items:center;width:25px;height:25px;margin-right:7px;border-radius:50%;background:var(--soft);color:var(--accent);font-size:.78rem}.ds-options{display:grid;gap:8px;margin-top:13px}.ds-options label{padding:7px;border-radius:6px}.ds-feedback{font-size:.86rem;margin-top:13px!important;padding:10px 12px;border-radius:6px}.ds-feedback[data-state=correct]{background:#e7f6ed;border-left:3px solid #21835d}.ds-feedback[data-state=retry]{background:#fff2da;border-left:3px solid #b67817}#ds-form>.ds-actions{margin-top:18px}.ds-sources{margin-top:28px;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}.ds-sources summary{color:var(--accent);font-weight:700;cursor:pointer;padding:8px 0}.ds-sources p{margin-top:10px}.ds-sources a{color:var(--accent)}.ds-answer,.ds-print{display:none}.ds-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:760px){.ds{padding:20px 13px}.ds-heading,.ds-section-heading{align-items:flex-start;flex-direction:column}.ds-exercises,.ds-observation,.ds-simulator{grid-template-columns:1fr}.ds-tabs button{font-size:.81rem;padding:9px}}@media print{@page{size:A4 portrait;margin:9mm}#main-content,.ds,body,html{background:#fff!important;color:#111!important;margin:0!important;padding:0!important;max-width:none!important}.ds>:not(.ds-print){display:none!important}.ds-print{display:block!important;font:10.5pt/1.3 Arial,sans-serif}.ds-print-heading{border-bottom:1pt 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