.heroDesc{max-width:100%}
.enunciado{background:linear-gradient(135deg,#eef2ff 0%,#f0f4ff 100%);border:1.5px solid rgba(59,110,248,.3);border-radius:14px;padding:14px 20px;margin:0 0 20px;position:relative}
.enunciado p{margin:0;color:#0f1629;font-weight:500;line-height:1.65}
.compactFormulaGrid{grid-template-columns:repeat(2,minmax(0,1fr))}
.modeGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:10px 0 12px}
.compactModeGrid{grid-template-columns:repeat(2,minmax(0,1fr));max-width:760px}
.modeBtn{min-height:58px;text-align:left;justify-content:flex-start;align-items:flex-start;flex-direction:column;background:#f8fafc}
.modeBtn strong{font-size:13px;color:#0f1629}
.modeBtn small{font-size:11px;color:#64748b;font-weight:700;line-height:1.3}
.modeBtn.active{background:#e8eeff;border-color:#93a7ff;box-shadow:0 0 0 3px rgba(59,110,248,.12)}
.condForm{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:10px;align-items:end;margin-top:10px}
.condField{grid-column:span 4;min-width:0}
.condField.wide{grid-column:span 8}
.condField.equationField{grid-column:span 4}
.condField.full{grid-column:span 12}
.condField label{display:block;margin:0 0 5px;font-size:12px;font-weight:800;color:#374151}
.condField .inputEcuacion{width:40%}
.templateMatrixWrap{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:8px}
.templateMatrixWrap table{border-spacing:6px}
.resultMatrixBlock{display:flex;align-items:flex-start;gap:18px;flex-wrap:wrap;margin-top:12px}
.resultMatrixBox{border:1px solid var(--border);background:#fff;border-radius:10px;padding:14px 16px;overflow-x:auto;max-width:100%}
.resultMatrixBox .resultMatrixTitle{font-size:11px;font-weight:900;letter-spacing:.07em;text-transform:uppercase;color:#2d4faa;margin-bottom:10px}
.linearSystemPreview{overflow-x:auto;padding:8px 0}
.solutionKind{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.04em;text-transform:uppercase;background:#ecfdf5;color:#166534;border:1px solid #bbf7d0;margin-bottom:10px}
.solutionKind.none{background:#fef2f2;color:#991b1b;border-color:#fecaca}
.solutionKind.infinite{background:#eef2ff;color:#1e40af;border-color:#c7d2fe}
.varList{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px;margin-top:10px}
.varChip{border:1px solid var(--border);background:#fafafe;border-radius:8px;padding:8px 10px;min-height:38px;display:flex;align-items:center;overflow-x:auto}
.quickActions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.summaryPill{border:1px solid rgba(30,50,150,.1);border-radius:14px;padding:12px 16px;background:#fff;box-shadow:0 2px 12px rgba(20,40,120,.06);overflow-x:auto}
.summaryPillTitle{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.1em;color:#3b6ef8;margin-bottom:8px}
.problemSummaryRow{display:flex;align-items:center;gap:12px;flex-wrap:nowrap;padding:4px 0;overflow-x:auto}
.problemSummaryRow .summaryPill{flex:0 0 auto}
.conditionSummary{display:inline-flex;align-items:center;gap:14px;padding:8px 14px}
.conditionSummary .summaryPillTitle{margin-bottom:0}
.conditionMath{display:inline-flex;align-items:center}
.matrixSummary{display:inline-flex;align-items:center;gap:14px;padding:8px 14px}
.matrixSummary .summaryPillTitle{margin-bottom:0}
.knownInputSummary{padding:8px 14px}
.knownMatricesPrompt{margin:0 0 4px;font-size:12px;font-weight:700;color:#374151}
.knownMatricesInputs,.knownMatricesValues{display:flex;align-items:center;gap:12px;flex-wrap:nowrap}
.knownInputSummary .matrizInputWrap{display:inline-flex;margin:0;padding:0;border:0;background:transparent;box-shadow:none}
.conditionEquality{padding:8px 0 2px;overflow-x:auto}
.conditionEquality .katex-display{margin:0}
.conditionDetailActions{display:flex;justify-content:flex-start;margin:8px 0 2px}
.conditionDetailsToggle{font-size:12px;padding:7px 12px}
.conditionMembersDetail[hidden]{display:none}
.conditionMemberCalc{margin-top:12px;padding-top:10px;border-top:1px dashed var(--border)}
.conditionMemberTitle{font-size:11px;font-weight:900;letter-spacing:.07em;text-transform:uppercase;color:#2d4faa;margin-bottom:6px}
.conditionMemberWork{overflow-x:auto}
.linearSystemChain{display:flex;align-items:center;gap:12px;overflow-x:auto;padding:2px 0 8px;white-space:nowrap}
.linearStaticSystem{display:inline-flex;align-items:center;flex:0 0 auto}
.linearStaticSystem .katex-display{margin:0}
.systemEquivalence{display:inline-flex;align-items:center;color:var(--accent);flex:0 0 auto}
.linearInputSystem{display:inline-flex;align-items:center;flex:0 0 auto}
.linearInputBrace{font:normal 54px/1 Georgia,serif;color:#1a2b6b;padding-right:6px;align-self:stretch;display:flex;align-items:center}
.linearEquationFields{display:inline-flex;flex-direction:column;justify-content:center;gap:5px}
.linearEquationInput{width:196px;height:30px;font-size:14px}
.linearSystemErrors .msgError{margin:4px 0 0}
.parameterMatrixChain{display:flex;align-items:center;gap:12px;overflow-x:auto;padding:4px 0 8px;white-space:nowrap}
.parameterMatrixInput{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto}
.parameterMatrixLabel,.parameterStaticMatrix{display:inline-flex;align-items:center;flex:0 0 auto}
.parameterInputMatrix{display:inline-flex;align-items:center}
.parameterInputMatrix table{border-spacing:5px}
.parameterMatrixCell{width:54px}
.parameterMatrixErrors .msgError{margin:4px 0 0}
.solutionSummary{border-color:rgba(37,99,235,.25);background:#f0f4ff}
.summarySolutionStatus{margin-bottom:0}
#caja1 .pasoSection{margin-top:12px}
.stepCard .stepTitle{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.stepTitleAutoBtn{flex-direction:column;align-items:center;gap:1px;font-size:11px;padding:5px 10px;background:#f5f3ff;border-color:#c4b5fd;color:#7c3aed;flex-shrink:0}
.stepTitleAutoBtn:hover{background:#ede9fe;border-color:#a78bfa}
.stepTitleAutoNote{font-size:9px;font-weight:700;color:#9ca3af}
.unknownNameControl{display:flex;align-items:center;gap:6px}
.unknownNameControl label{font-size:11px;font-weight:800;color:var(--muted);white-space:nowrap;margin:0}
.unknownNameInput{width:32px;height:26px;text-align:center;font-size:14px;font-weight:800;text-transform:uppercase;border:1px solid var(--border);border-radius:6px;background:var(--soft);color:var(--accent);padding:0;outline:none;cursor:pointer}
.unknownNameInput:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
@media(max-width:900px){
  .compactFormulaGrid,.modeGrid{grid-template-columns:1fr}
  .condField,.condField.wide,.condField.equationField,.condField.full{grid-column:span 12}
  .problemSummaryRow{align-items:flex-start}
  .linearEquationInput{width:170px}
}