.extended-grid-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;margin-bottom:40px}.extended-col-card{background:var(--card-bg);border:2px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm);transition:transform .2s,border-color .2s}.extended-col-card:hover{transform:translateY(-2px);border-color:var(--primary)}.extended-col-header{font-size:15px;font-weight:800;color:var(--primary);text-align:center;border-bottom:2px solid var(--border-color);padding-bottom:10px;margin-bottom:12px}.extended-rows{display:flex;flex-direction:column;gap:6px}.ext-row{display:flex;justify-content:center;background:var(--bg-color);padding:6px 10px;border-radius:6px;font-size:14px;font-weight:600;transition:all .2s ease;border:1.5px solid transparent}.ext-row.highlighted{background:var(--primary-light);border-color:var(--primary);transform:scale(1.03);box-shadow:var(--shadow-sm)}.ext-row .eq{color:var(--text-dark);width:55%;text-align:right;padding-right:4px}.ext-row .res{color:var(--secondary);font-weight:800;width:45%;text-align:left;padding-left:4px}.search-finder-container{background:var(--bg-color);padding:20px;border-radius:var(--radius-md);margin-bottom:30px;border:1px solid var(--border-color)}.search-finder-input{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:10px;outline:none;font-size:15px;font-weight:600;background:var(--card-bg);color:var(--text-dark);transition:border-color .2s}.search-finder-input:focus{border-color:var(--primary)}.combo-quiz-card{background:linear-gradient(135deg,var(--card-bg),var(--bg-color));border:2px solid var(--primary);border-radius:var(--radius-lg);padding:30px;margin-bottom:40px;position:relative}.combo-quiz-area{background:var(--card-bg);border-radius:var(--radius-md);padding:24px;border:1px solid var(--border-color);margin-top:20px;text-align:center}.combo-quiz-question{font-size:36px;font-weight:800;color:var(--text-dark);margin-bottom:16px}.combo-quiz-input{width:120px;padding:10px;font-size:24px;font-weight:800;text-align:center;border:3px solid var(--border-color);border-radius:var(--radius-md);outline:none;transition:border-color .2s;background:var(--bg-color);color:var(--text-dark)}.combo-quiz-input:focus{border-color:var(--primary)}.combo-quiz-feedback{font-size:18px;font-weight:700;margin-top:12px;min-height:27px}.combo-quiz-feedback.correct{color:#2ecc71}.combo-quiz-feedback.incorrect{color:#e74c3c}.combo-quiz-stats{display:flex;justify-content:center;gap:30px;margin-top:20px;border-top:1px solid var(--border-color);padding-top:16px}.combo-stat-item{text-align:center}.combo-stat-val{font-size:22px;font-weight:800;color:var(--primary)}.combo-stat-lbl{font-size:12px;color:var(--text-muted);font-weight:600}.numeric-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:8px;margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}.grid-cell{aspect-ratio:1;background:var(--card-bg);border:2px solid var(--border-color);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--text-dark);cursor:pointer;transition:all .2s ease;user-select:none}.grid-cell:hover{border-color:var(--primary);transform:scale(1.08);box-shadow:var(--shadow-sm)}.grid-cell.highlight-even{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}.grid-cell.highlight-odd{background:var(--secondary-light);border-color:var(--secondary);color:var(--secondary)}.grid-cell.highlight-prime{background:#ffeeb2;border-color:#f39c12;color:#d35400}.grid-cell.highlight-multiple{background:#d5f5e3;border-color:#2ecc71;color:#27ae60;transform:scale(1.02)}.grid-ctrl-btn{padding:8px 16px;border:2px solid var(--border-color);border-radius:20px;font-weight:600;background:var(--card-bg);color:var(--text-dark);cursor:pointer;transition:all .2s ease}.grid-ctrl-btn:hover{border-color:var(--primary);color:var(--primary)}.grid-ctrl-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}@media(max-width:600px){.numeric-grid{gap:4px;margin-bottom:25px}.grid-cell{font-size:11px;border-radius:4px;border-width:1px}.grid-controls{gap:8px!important;justify-content:center!important}.grid-ctrl-btn{font-size:12px;padding:6px 12px}.grid-controls>div{margin-left:0!important;width:100%!important;justify-content:center!important}#multiple-select{width:100%!important;text-align-last:center!important}}@media print{body{background:#fff!important;color:#000!important}.app-container,.main-content,article.content-card{display:block!important;box-shadow:none!important;border:none!important;padding:0!important;background:transparent!important;margin:0!important;width:100%!important;max-width:100%!important}article.content-card h1{display:block!important;text-align:center!important;margin-bottom:20px!important;font-size:24px!important;color:#000!important}.extended-grid-container{display:flex!important;flex-direction:row!important;flex-wrap:wrap!important;gap:15px!important;width:100%!important;margin-top:20px!important}.extended-col-card{display:block!important;flex:1 1 200px!important;border:1px solid #333!important;background:#fff!important;color:#000!important;padding:10px!important;box-shadow:none!important;border-radius:8px!important;page-break-inside:avoid!important;break-inside:avoid!important}.extended-col-header{color:#000!important;border-bottom:1px solid #333!important}.ext-row{background:#f8f9fa!important;border:1px solid #ddd!important;color:#000!important;padding:4px 8px!important;font-size:12px!important}.ext-row .eq{color:#000!important}.ext-row .res{color:#2e7d32!important;font-weight:800}.numeric-grid{display:grid!important;grid-template-columns:repeat(10,1fr)!important;gap:6px!important;max-width:500px!important;margin:20px auto!important}.grid-cell{border:1px solid #333!important;background:#fff!important;color:#000!important;font-size:14px!important;border-radius:4px!important}.grid-cell.highlight-even{background:#f0f0f0!important}.grid-cell.highlight-odd{background:#e9e9e9!important}.grid-cell.highlight-prime{background:#fff3cd!important}.grid-cell.highlight-multiple{background:#d4edda!important}.main-header,.sidebar,.main-footer,.breadcrumbs,.combo-quiz-card,.faq-item,.faqs-container,.quiz-controls-row,.app-container:before,.app-container:after,.combo-tips-grid,.intro-lead,.combo-tip-card,.print-btn,.search-finder-container,.grid-controls,h2,p{display:none!important}}