:root{--sc-tool:#2563eb;--sc-tool-dark:#1d4ed8;--sc-gradient:linear-gradient(135deg,#2563eb 0%,#60a5fa 100%);--sc-light:#eff6ff}[data-theme="dark"]{--sc-light:rgba(37,99,235,0.15)}.sc-type-toggle{display:flex;border:1.5px solid var(--border);border-radius:0.5rem;overflow:hidden;margin-bottom:1rem}.sc-type-btn{flex:1;padding:0.5rem;font-weight:600;font-size:0.75rem;border:none;cursor:pointer;background:var(--bg-secondary);color:var(--text-secondary);transition:all 0.15s;font-family:var(--font-sans);text-align:center}.sc-type-btn.active{background:var(--sc-gradient);color:#fff}.sc-type-btn:hover:not(.active){background:var(--bg-tertiary)}[data-theme="dark"] .sc-type-btn{background:var(--bg-tertiary)}[data-theme="dark"] .sc-type-btn.active{background:var(--sc-gradient);color:#fff}.sc-mode-toggle{display:grid;grid-template-columns:repeat(4,1fr);gap:0.375rem;background:var(--bg-secondary);padding:0.375rem;border-radius:0.625rem;border:1.5px solid var(--border)}.sc-mode-btn{position:relative;padding:0.5rem 0.375rem;font-weight:600;font-size:0.625rem;border:1.5px solid transparent;border-radius:0.5rem;cursor:pointer;background:transparent;color:var(--text-muted);transition:all 0.2s ease;font-family:var(--font-sans);text-align:center;white-space:nowrap;line-height:1.3}.sc-mode-btn::before{content:"";display:block;width:1.5rem;height:1.5rem;margin:0 auto 0.25rem;border-radius:0.375rem;background:var(--bg-tertiary);transition:all 0.2s ease}.sc-mode-btn[data-mode="expansion"]::before{background:linear-gradient(135deg,#2563eb20,#60a5fa30);border:1.5px solid #2563eb30}.sc-mode-btn[data-mode="remainder"]::before{background:linear-gradient(135deg,#d9770620,#fbbf2430);border:1.5px solid #d9770630}.sc-mode-btn[data-mode="integral"]::before{background:linear-gradient(135deg,#7c3aed20,#a78bfa30);border:1.5px solid #7c3aed30}.sc-mode-btn[data-mode="limit"]::before{background:linear-gradient(135deg,#e11d4820,#fb718530);border:1.5px solid #e11d4830}.sc-mode-btn::after{position:absolute;top:0.5rem;left:50%;transform:translateX(-50%);font-size:0.75rem;font-weight:700;line-height:1.5rem;width:1.5rem;text-align:center}.sc-mode-btn[data-mode="expansion"]::after{content:"Σ";color:#2563eb}.sc-mode-btn[data-mode="remainder"]::after{content:"±";color:#d97706}.sc-mode-btn[data-mode="integral"]::after{content:"∫";color:#7c3aed}.sc-mode-btn[data-mode="limit"]::after{content:"→";color:#e11d48}.sc-mode-btn:hover:not(.active){background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border)}.sc-mode-btn.active{border-color:var(--sc-tool);background:var(--sc-light);color:var(--sc-tool);box-shadow:0 1px 3px rgba(37,99,235,0.12)}.sc-mode-btn[data-mode="expansion"].active{--_accent:#2563eb;border-color:#2563eb;background:#eff6ff;color:#2563eb;box-shadow:0 1px 3px rgba(37,99,235,0.15)}.sc-mode-btn[data-mode="remainder"].active{border-color:#d97706;background:#fffbeb;color:#92400e;box-shadow:0 1px 3px rgba(217,119,6,0.15)}.sc-mode-btn[data-mode="integral"].active{border-color:#7c3aed;background:#f5f3ff;color:#5b21b6;box-shadow:0 1px 3px rgba(124,58,237,0.15)}.sc-mode-btn[data-mode="limit"].active{border-color:#e11d48;background:#fff1f2;color:#9f1239;box-shadow:0 1px 3px rgba(225,29,72,0.15)}.sc-mode-btn.active::before{transform:scale(1.05)}.sc-mode-btn[data-mode="expansion"].active::before{background:linear-gradient(135deg,#2563eb30,#60a5fa50);border-color:#2563eb60}.sc-mode-btn[data-mode="remainder"].active::before{background:linear-gradient(135deg,#d9770630,#fbbf2450);border-color:#d9770660}.sc-mode-btn[data-mode="integral"].active::before{background:linear-gradient(135deg,#7c3aed30,#a78bfa50);border-color:#7c3aed60}.sc-mode-btn[data-mode="limit"].active::before{background:linear-gradient(135deg,#e11d4830,#fb718550);border-color:#e11d4860}[data-theme="dark"] .sc-mode-toggle{background:var(--bg-tertiary);border-color:var(--border)}[data-theme="dark"] .sc-mode-btn{color:var(--text-muted)}[data-theme="dark"] .sc-mode-btn:hover:not(.active){background:rgba(255,255,255,0.05)}[data-theme="dark"] .sc-mode-btn[data-mode="expansion"].active{background:rgba(37,99,235,0.15);color:#60a5fa;border-color:#2563eb80}[data-theme="dark"] .sc-mode-btn[data-mode="remainder"].active{background:rgba(217,119,6,0.15);color:#fbbf24;border-color:#d9770680}[data-theme="dark"] .sc-mode-btn[data-mode="integral"].active{background:rgba(124,58,237,0.15);color:#a78bfa;border-color:#7c3aed80}[data-theme="dark"] .sc-mode-btn[data-mode="limit"].active{background:rgba(225,29,72,0.15);color:#fb7185;border-color:#e11d4880}[data-theme="dark"] .sc-mode-btn::before{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.1)}[data-theme="dark"] .sc-mode-btn[data-mode="expansion"].active::before{background:rgba(37,99,235,0.2);border-color:rgba(37,99,235,0.4)}[data-theme="dark"] .sc-mode-btn[data-mode="remainder"].active::before{background:rgba(217,119,6,0.2);border-color:rgba(217,119,6,0.4)}[data-theme="dark"] .sc-mode-btn[data-mode="integral"].active::before{background:rgba(124,58,237,0.2);border-color:rgba(124,58,237,0.4)}[data-theme="dark"] .sc-mode-btn[data-mode="limit"].active::before{background:rgba(225,29,72,0.2);border-color:rgba(225,29,72,0.4)}.sc-mode-inputs{margin-top:0.75rem;padding:0.75rem;border-radius:0.5rem;animation:sc-slideDown 0.25s ease-out}.sc-mode-inputs .tool-form-hint{margin-top:0.5rem;font-size:0.6875rem;line-height:1.5}.sc-mode-inputs .sc-param-row{margin-bottom:0}#sc-remainder-inputs{background:#fffbeb;border:1.5px solid #fde68a;border-top:3px solid #d97706}#sc-integral-inputs{background:#f5f3ff;border:1.5px solid #ddd6fe;border-top:3px solid #7c3aed}#sc-limit-inputs{background:#fff1f2;border:1.5px solid #fecdd3;border-top:3px solid #e11d48}#sc-remainder-inputs .sc-param-label{color:#92400e}#sc-integral-inputs .sc-param-label{color:#5b21b6}#sc-limit-inputs .sc-param-label{color:#9f1239}#sc-remainder-inputs .sc-param-input:focus{border-color:#d97706;box-shadow:0 0 0 2px rgba(217,119,6,0.15)}#sc-integral-inputs .sc-param-input:focus{border-color:#7c3aed;box-shadow:0 0 0 2px rgba(124,58,237,0.15)}#sc-limit-inputs .sc-param-input:focus{border-color:#e11d48;box-shadow:0 0 0 2px rgba(225,29,72,0.15)}#sc-limit-inputs .sc-func-input:focus{border-color:#e11d48;box-shadow:0 0 0 3px rgba(225,29,72,0.1)}[data-theme="dark"] #sc-remainder-inputs{background:rgba(217,119,6,0.08);border-color:rgba(217,119,6,0.2);border-top-color:#d97706}[data-theme="dark"] #sc-integral-inputs{background:rgba(124,58,237,0.08);border-color:rgba(124,58,237,0.2);border-top-color:#7c3aed}[data-theme="dark"] #sc-limit-inputs{background:rgba(225,29,72,0.08);border-color:rgba(225,29,72,0.2);border-top-color:#e11d48}[data-theme="dark"] #sc-remainder-inputs .sc-param-label{color:#fbbf24}[data-theme="dark"] #sc-integral-inputs .sc-param-label{color:#a78bfa}[data-theme="dark"] #sc-limit-inputs .sc-param-label{color:#fb7185}@keyframes sc-slideDown{from{opacity:0;transform:translateY(-0.5rem)}to{opacity:1;transform:translateY(0)}}.sc-remainder-box,.sc-integral-box,.sc-limit-box{padding:1rem 1.25rem;border-radius:0.625rem;margin:0.75rem 0}.sc-remainder-box{border-left:4px solid #d97706;background:linear-gradient(135deg,#fffbeb 0%,#fef3c7 100%)}.sc-integral-box{border-left:4px solid #7c3aed;background:linear-gradient(135deg,#f5f3ff 0%,#ede9fe 100%)}.sc-limit-box{border-left:4px solid #e11d48;background:linear-gradient(135deg,#fff1f2 0%,#ffe4e6 100%)}.sc-remainder-box h4,.sc-integral-box h4,.sc-limit-box h4{font-size:0.8125rem;font-weight:700;margin:0 0 0.75rem;display:flex;align-items:center;gap:0.5rem;letter-spacing:0.01em}.sc-remainder-box h4{color:#92400e}.sc-integral-box h4{color:#5b21b6}.sc-limit-box h4{color:#9f1239}.sc-remainder-box h4::before{content:"±";font-size:1.1rem}.sc-integral-box h4::before{content:"∫";font-size:1.1rem}.sc-limit-box h4::before{content:"→";font-size:1.1rem}.sc-remainder-box .sc-step-math,.sc-integral-box .sc-step-math,.sc-limit-box .sc-step-math{overflow-x:auto;padding:0.375rem 0}.sc-result-row{display:flex;justify-content:space-between;align-items:baseline;font-size:0.8125rem;color:var(--text-secondary);padding:0.375rem 0;border-bottom:1px dashed rgba(0,0,0,0.06)}.sc-result-row:last-child{border-bottom:none}.sc-result-row strong{color:var(--text-primary);font-family:var(--font-mono);font-size:0.875rem}.sc-result-comparison{display:flex;gap:0.75rem;margin-top:0.75rem;font-size:0.8125rem}.sc-result-comparison>div{flex:1;padding:0.625rem;background:rgba(255,255,255,0.6);border:1px solid rgba(0,0,0,0.06);border-radius:0.5rem;text-align:center}[data-theme="dark"] .sc-remainder-box{background:linear-gradient(135deg,rgba(217,119,6,0.1),rgba(217,119,6,0.05));border-left-color:#d97706}[data-theme="dark"] .sc-integral-box{background:linear-gradient(135deg,rgba(124,58,237,0.1),rgba(124,58,237,0.05));border-left-color:#7c3aed}[data-theme="dark"] .sc-limit-box{background:linear-gradient(135deg,rgba(225,29,72,0.1),rgba(225,29,72,0.05));border-left-color:#e11d48}[data-theme="dark"] .sc-remainder-box h4{color:#fbbf24}[data-theme="dark"] .sc-integral-box h4{color:#a78bfa}[data-theme="dark"] .sc-limit-box h4{color:#fb7185}[data-theme="dark"] .sc-result-row{border-bottom-color:rgba(255,255,255,0.06)}[data-theme="dark"] .sc-result-comparison>div{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.08)}.sc-func-input{width:100%;padding:0.625rem 0.75rem;font-family:var(--font-mono);font-size:0.875rem;border:1.5px solid var(--border);border-radius:0.5rem;background:var(--bg-primary);color:var(--text-primary);transition:border-color 0.15s}.sc-func-input:focus{outline:none;border-color:var(--sc-tool);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.sc-func-input::placeholder{color:var(--text-muted);font-family:var(--font-sans)}.sc-func-input-wrap{position:relative}.sc-func-autocomplete{display:none;position:absolute;top:100%;left:0;right:0;z-index:var(--z-dropdown,1000);max-height:260px;overflow-y:auto;background:var(--bg-primary);border:1.5px solid var(--sc-tool);border-top:none;border-radius:0 0 0.5rem 0.5rem;box-shadow:var(--shadow-lg,0 10px 25px rgba(0,0,0,0.1))}.sc-func-autocomplete.active{display:block}.sc-func-ac-item{display:flex;align-items:center;padding:0.5rem 0.75rem;cursor:pointer;transition:background 0.1s;font-family:var(--font-mono);font-size:0.8125rem;color:var(--text-primary)}.sc-func-ac-item:hover,.sc-func-ac-item.selected{background:var(--sc-light)}.sc-func-ac-cat{margin-left:auto;padding:0.125rem 0.5rem;font-size:0.625rem;font-weight:600;font-family:var(--font-sans);text-transform:uppercase;letter-spacing:0.03em;border-radius:2rem;background:var(--bg-tertiary,var(--bg-secondary));color:var(--text-muted);white-space:nowrap;flex-shrink:0}[data-theme="dark"] .sc-func-autocomplete{background:var(--bg-secondary);border-color:var(--sc-tool);box-shadow:0 10px 25px rgba(0,0,0,0.3)}[data-theme="dark"] .sc-func-ac-item:hover,[data-theme="dark"] .sc-func-ac-item.selected{background:var(--sc-light)}[data-theme="dark"] .sc-func-ac-cat{background:var(--bg-tertiary);color:var(--text-muted)}.sc-func-palette{display:flex;flex-wrap:wrap;gap:0.25rem;margin-top:0.375rem}.sc-palette-btn{padding:0.25rem 0.5rem;font-size:0.6875rem;font-weight:600;font-family:var(--font-mono);border:1px solid var(--border);border-radius:0.25rem;background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;transition:all 0.15s;line-height:1.2}.sc-palette-btn:hover{background:var(--sc-light);color:var(--sc-tool);border-color:var(--sc-tool)}.sc-palette-btn:active{transform:scale(0.95)}[data-theme="dark"] .sc-palette-btn{background:var(--bg-tertiary)}.sc-param-row{display:flex;gap:0.5rem;align-items:flex-end;margin-bottom:0.5rem}.sc-param-group{flex:1;min-width:0}.sc-param-label{display:block;font-size:0.6875rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:0.25rem}.sc-param-input{width:100%;padding:0.5rem 0.5rem;font-size:0.8125rem;font-family:var(--font-mono);border:1.5px solid var(--border);border-radius:0.375rem;background:var(--bg-primary);color:var(--text-primary);transition:border-color 0.15s;text-align:center}.sc-param-input:focus{outline:none;border-color:var(--sc-tool);box-shadow:0 0 0 2px rgba(37,99,235,0.1)}.sc-method-select{width:100%;padding:0.5rem 0.75rem;font-size:0.8125rem;border:1.5px solid var(--border);border-radius:0.375rem;background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);cursor:pointer;transition:border-color 0.15s}.sc-method-select:focus{outline:none;border-color:var(--sc-tool)}#sc-result-content{overflow-x:auto;overflow-y:auto}#sc-result-content .katex-display{overflow-x:auto;overflow-y:hidden}.sc-preview{min-height:2.5rem;padding:0.5rem 0.75rem;border:1.5px dashed var(--border);border-radius:0.5rem;background:var(--bg-secondary);font-size:1rem;display:flex;align-items:center;justify-content:center;overflow-x:auto}.sc-preview .katex{font-size:1em}.sc-output-tabs{display:flex;border-bottom:1.5px solid var(--border);background:var(--bg-secondary);border-radius:0.75rem 0.75rem 0 0;overflow:hidden}.sc-output-tab{flex:1;padding:0.625rem 0.5rem;font-size:0.75rem;font-weight:600;border:none;cursor:pointer;background:transparent;color:var(--text-secondary);transition:all 0.15s;font-family:var(--font-sans);text-align:center;position:relative}.sc-output-tab.active{color:var(--sc-tool);background:var(--bg-primary)}.sc-output-tab.active::after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--sc-tool)}.sc-output-tab:hover:not(.active){background:var(--bg-tertiary)}.sc-panel{display:none}.sc-panel.active{display:block}#sc-panel-result.active{display:flex;flex-direction:column;max-height:80vh}.sc-result-scroll-container{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:0 1px;scrollbar-width:thin;scrollbar-color:var(--sc-tool) transparent}.sc-result-scroll-container::-webkit-scrollbar{width:5px}.sc-result-scroll-container::-webkit-scrollbar-track{background:transparent}.sc-result-scroll-container::-webkit-scrollbar-thumb{background:var(--sc-tool);border-radius:3px}.sc-result-scroll-container::-webkit-scrollbar-thumb:hover{background:var(--sc-tool-dark)}.sc-result-toolbar{display:flex;align-items:center;gap:0.25rem;padding:0.625rem 0.75rem;border-top:1.5px solid var(--border);background:var(--bg-secondary);border-radius:0 0 0.75rem 0.75rem;flex-shrink:0}.sc-toolbar-group{display:flex;gap:0.25rem}.sc-toolbar-sep{width:1px;height:1.25rem;background:var(--border);margin:0 0.25rem;flex-shrink:0}.sc-toolbar-btn{display:inline-flex;align-items:center;gap:0.35rem;padding:0.375rem 0.625rem;font-size:0.6875rem;font-weight:600;font-family:var(--font-sans);border:1px solid var(--border);border-radius:0.375rem;background:var(--bg-primary);color:var(--text-secondary);cursor:pointer;transition:all 0.15s;white-space:nowrap;line-height:1}.sc-toolbar-btn:hover{background:var(--sc-light);color:var(--sc-tool);border-color:var(--sc-tool)}.sc-toolbar-btn:active{transform:scale(0.97)}.sc-toolbar-btn svg{flex-shrink:0}[data-theme="dark"] .sc-result-toolbar{background:var(--bg-tertiary)}[data-theme="dark"] .sc-toolbar-btn{background:var(--bg-secondary);border-color:var(--border);color:var(--text-secondary)}[data-theme="dark"] .sc-toolbar-btn:hover{background:var(--sc-light);color:var(--sc-tool);border-color:var(--sc-tool)}.sc-steps-toggle-btn{display:flex;align-items:center;justify-content:center;gap:0.5rem;width:100%;padding:0.75rem 1rem;font-size:0.875rem;font-weight:600;font-family:var(--font-sans);color:#fff;background:var(--sc-gradient);border:none;border-radius:0.5rem;cursor:pointer;transition:opacity 0.15s,transform 0.15s}.sc-steps-toggle-btn:hover{opacity:0.9}.sc-steps-toggle-btn:active{transform:scale(0.98)}.sc-steps-toggle-btn svg{transition:transform 0.2s}.sc-steps-toggle-btn.open svg{transform:rotate(90deg)}.sc-steps-header{padding:1rem 1.25rem;background:var(--sc-light);border-radius:0.75rem;border:1.5px solid rgba(37,99,235,0.2);margin-bottom:0.5rem}.sc-steps-header h4{font-size:1rem;font-weight:700;color:var(--sc-tool);margin:0 0 0.25rem}.sc-steps-header p{font-size:0.8125rem;color:var(--text-secondary);margin:0}.sc-steps-header--remainder{background:#fffbeb;border-color:rgba(217,119,6,0.3)}.sc-steps-header--remainder h4{color:#d97706}.sc-steps-header--integral{background:#f5f3ff;border-color:rgba(124,58,237,0.3)}.sc-steps-header--integral h4{color:#7c3aed}.sc-steps-header--limit{background:#fff1f2;border-color:rgba(225,29,72,0.3)}.sc-steps-header--limit h4{color:#e11d48}[data-theme="dark"] .sc-steps-header--remainder{background:rgba(217,119,6,0.12);border-color:rgba(217,119,6,0.25)}[data-theme="dark"] .sc-steps-header--remainder h4{color:#fbbf24}[data-theme="dark"] .sc-steps-header--integral{background:rgba(124,58,237,0.12);border-color:rgba(124,58,237,0.25)}[data-theme="dark"] .sc-steps-header--integral h4{color:#a78bfa}[data-theme="dark"] .sc-steps-header--limit{background:rgba(225,29,72,0.12);border-color:rgba(225,29,72,0.25)}[data-theme="dark"] .sc-steps-header--limit h4{color:#fb7185}.sc-step{display:flex;gap:0.75rem;padding:0.75rem;margin:0.5rem 0;background:var(--bg-secondary);border-radius:0.5rem;border-left:3px solid var(--sc-tool);transition:background 0.15s}.sc-step:hover{background:var(--bg-tertiary)}.sc-step-number{width:1.5rem;height:1.5rem;border-radius:50%;background:var(--sc-gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:0.6875rem;font-weight:700;flex-shrink:0;margin-top:0.125rem}.sc-step-content{flex:1;min-width:0}.sc-step-desc{font-size:0.8125rem;font-weight:500;color:var(--text-primary);margin-bottom:0.375rem}.sc-step-math{overflow-x:auto;padding:0.25rem 0}.sc-step-math .katex{font-size:0.9em}.sc-step-math .katex-display{margin:0;overflow-x:auto;overflow-y:hidden}.sc-step-derivative{font-size:0.75rem;color:var(--text-muted);margin-top:0.25rem;overflow-x:auto}.sc-step-derivative .katex{font-size:0.85em}.sc-term-badge{display:inline-block;background:var(--sc-gradient);color:#fff;padding:0.125rem 0.5rem;border-radius:0.75rem;font-size:0.6875rem;font-weight:600;margin-left:0.5rem;vertical-align:middle}.sc-convergence{padding:1rem;background:#f0fdf4;border-left:3px solid #22c55e;border-radius:0.5rem;margin-top:1rem}[data-theme="dark"] .sc-convergence{background:rgba(34,197,94,0.1)}.sc-convergence h4{font-size:0.875rem;font-weight:600;color:#15803d;margin:0 0 0.5rem}[data-theme="dark"] .sc-convergence h4{color:#4ade80}.sc-convergence p{font-size:0.8125rem;color:var(--text-secondary);margin:0;line-height:1.6}.sc-slider-group{display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1rem;background:var(--bg-secondary);border-radius:0.5rem;margin-top:0.75rem}.sc-slider-label{font-size:0.75rem;font-weight:600;color:var(--text-secondary);white-space:nowrap}.sc-slider{flex:1;-webkit-appearance:none;height:4px;border-radius:2px;background:var(--border);outline:none}.sc-slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--sc-tool);cursor:pointer}.sc-slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--sc-tool);cursor:pointer;border:none}.sc-slider-value{font-family:var(--font-mono);font-size:0.8125rem;font-weight:600;color:var(--sc-tool);min-width:1.5rem;text-align:center}.sc-examples{display:flex;flex-wrap:wrap;gap:0.375rem}.sc-example-chip{padding:0.3rem 0.625rem;font-size:0.6875rem;font-weight:500;border-radius:2rem;border:1px solid var(--border);background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;transition:all 0.15s;font-family:var(--font-mono)}.sc-example-chip:hover{background:var(--sc-light);color:var(--sc-tool);border-color:var(--sc-tool)}.sc-formula-box{background:#fefce8;border:1.5px solid #fde047;border-radius:0.5rem;padding:0.75rem;text-align:center;margin:0.5rem 0}[data-theme="dark"] .sc-formula-box{background:rgba(253,224,71,0.1);border-color:rgba(253,224,71,0.3)}.sc-formula-box .katex{font-size:1em}.sc-concept-hero{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:0.75rem;padding:1.5rem 1rem;margin:1rem 0;background:var(--bg-secondary);border-radius:0.75rem}.sc-concept-block{text-align:center}.sc-concept-symbol{font-family:var(--font-mono);font-size:1.5rem;font-weight:700;line-height:1;margin-bottom:0.25rem}.sc-concept-label{font-size:0.625rem;font-weight:600;text-transform:uppercase;letter-spacing:0.05em}.sc-c-fn{color:#2563eb}.sc-c-deriv{color:#7c3aed}.sc-c-fact{color:#059669}.sc-c-power{color:#dc2626}.sc-c-eq{color:var(--text-muted);font-size:1.25rem}.sc-series-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0.75rem;margin:1rem 0}.sc-series-card{padding:1rem;background:var(--bg-secondary);border-radius:0.5rem;border-left:3px solid var(--sc-tool)}.sc-series-card h4{font-size:0.875rem;font-weight:600;color:var(--text-primary);margin:0 0 0.375rem;display:flex;align-items:center;gap:0.375rem}.sc-series-card p{font-size:0.75rem;color:var(--text-secondary);margin:0;line-height:1.5;font-family:var(--font-mono)}.sc-callout{display:flex;gap:0.75rem;padding:1rem;border-radius:0.5rem;margin:1rem 0}.sc-callout-icon{font-size:1.25rem;flex-shrink:0}.sc-callout-text{font-size:0.8125rem;line-height:1.6;color:var(--text-secondary)}.sc-callout-insight{background:#eff6ff;border-left:3px solid #2563eb}.sc-callout-tip{background:#ecfdf5;border-left:3px solid #10b981}[data-theme="dark"] .sc-callout-insight{background:rgba(37,99,235,0.1)}[data-theme="dark"] .sc-callout-tip{background:rgba(16,185,129,0.1)}.sc-edu-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0.75rem}.sc-edu-card{padding:1rem;background:var(--bg-secondary);border-radius:0.5rem}.sc-edu-card h4{font-size:0.875rem;font-weight:600;color:var(--text-primary);margin:0 0 0.375rem}.sc-edu-card p{font-size:0.8125rem;color:var(--text-secondary);margin:0;line-height:1.6}.sc-sympy-spinner{width:20px;height:20px;border:3px solid var(--border);border-top-color:var(--sc-tool);border-radius:50%;animation:sc-spin 0.6s linear infinite;margin:0 auto}@keyframes sc-spin{to{transform:rotate(360deg)}}@keyframes sc-fadeInUp{from{opacity:0;transform:translateY(1rem)}to{opacity:1;transform:translateY(0)}}.sc-anim{opacity:0;transform:translateY(1rem);transition:opacity 0.5s ease,transform 0.5s ease}.sc-anim.sc-visible{opacity:1;transform:translateY(0)}.sc-anim-d1{transition-delay:0.1s}.sc-anim-d2{transition-delay:0.2s}.sc-anim-d3{transition-delay:0.3s}.sc-anim-d4{transition-delay:0.4s}.sc-anim-d5{transition-delay:0.5s}@media (prefers-reduced-motion:reduce){.sc-anim{opacity:1;transform:none;transition:none}}.sc-worksheet-btn{padding:0.5rem 1rem;font-size:0.8125rem;font-weight:600;border:1.5px solid var(--sc-tool);border-radius:0.5rem;background:transparent;color:var(--sc-tool);cursor:pointer;transition:all 0.15s;font-family:var(--font-sans)}.sc-worksheet-btn:hover{background:var(--sc-tool);color:#fff}@media (max-width:640px){.sc-mode-toggle{grid-template-columns:repeat(2,1fr)}.sc-mode-btn{font-size:0.625rem;padding:0.4rem 0.25rem}.sc-mode-btn::before{width:1.25rem;height:1.25rem}.sc-mode-btn::after{font-size:0.625rem;line-height:1.25rem;width:1.25rem;top:0.4rem}.sc-mode-inputs{padding:0.625rem}.sc-param-row{flex-direction:column;gap:0.375rem}.sc-series-grid{grid-template-columns:1fr}.sc-edu-grid{grid-template-columns:1fr}#sc-panel-result.active{max-height:70vh}.sc-toolbar-btn{padding:0.35rem 0.5rem;font-size:0.625rem}.sc-remainder-box,.sc-integral-box,.sc-limit-box{padding:0.75rem}.sc-result-comparison{flex-direction:column;gap:0.5rem}}