.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:30px}.stat-card{background:white;border-radius:20px;padding:20px;display:flex;align-items:center;gap:16px;border:1px solid var(--gray-200);transition:all 0.3s}.stat-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.1)}.stat-icon{width:50px;height:50px;background:linear-gradient(135deg, #e0e7ff, #f0f4ff);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--primary-color)}.stat-value{font-size:1.6rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.input-tabs{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap;border-bottom:1px solid var(--gray-200);padding-bottom:12px}.input-tab{background:transparent;border:none;padding:10px 20px;border-radius:40px;cursor:pointer;font-size:0.85rem;transition:all 0.2s;color:var(--gray-600)}.input-tab i{margin-right:6px}.input-tab.active{background:var(--primary-color);color:white}.input-panel{margin-bottom:24px}.manual-input{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.input-group label{display:block;font-size:0.75rem;color:var(--gray-500);margin-bottom:8px}.data-input{width:100%;padding:10px 14px;border:1px solid var(--gray-300);border-radius:12px;font-family:'Fira Code',monospace}.data-input:focus{outline:none;border-color:var(--primary-color)}.paste-textarea{width:100%;min-height:150px;padding:16px;font-family:'Fira Code',monospace;font-size:0.85rem;border:1px solid var(--gray-300);border-radius:12px;resize:vertical}.paste-options{display:flex;gap:20px;margin-top:12px}.upload-area{border:2px dashed var(--gray-300);border-radius:20px;padding:40px;text-align:center;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:var(--primary-color);background:var(--gray-50)}.upload-area i{font-size:48px;color:var(--gray-400);margin-bottom:12px}.upload-hint{font-size:0.75rem;color:var(--gray-500);margin-top:8px}.file-info{background:var(--gray-50);border-radius:16px;padding:16px;margin-top:16px}.file-info div{margin-bottom:4px;font-size:0.85rem}.chart-options{background:var(--gray-50);border-radius:20px;padding:20px;margin-bottom:24px}.options-header{font-size:0.85rem;font-weight:600;margin-bottom:16px;color:var(--gray-700)}.options-grid{display:grid;grid-template-columns:repeat(auto-fit, minmax(200px, 1fr));gap:16px}.option-group label{display:block;font-size:0.75rem;color:var(--gray-500);margin-bottom:6px}.option-input,.option-select{width:100%;padding:8px 12px;border:1px solid var(--gray-300);border-radius:12px;background:white}.option-group input[type="range"]{width:100%;margin-top:4px}.option-group .checkbox-label{display:flex;align-items:center;gap:8px;font-size:0.8rem;margin-top:6px}.calc-section{text-align:center;margin:24px 0}.calc-btn{padding:12px 40px;font-size:1rem}.chart-section{background:white;border-radius:20px;border:1px solid var(--gray-200);padding:20px;margin-bottom:24px;animation:fadeIn 0.3s ease}.chart-container{position:relative;height:400px}.chart-actions{display:flex;gap:12px;justify-content:center;margin-top:16px}.stats-section .stats-grid{grid-template-columns:repeat(6, 1fr);margin-top:16px}.stats-section .stat-card{padding:12px;text-align:center}.stats-section .stat-value{font-size:1rem}.knowledge-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-top:20px}.knowledge-card{background:var(--gray-50);border-radius:16px;padding:20px;text-align:center}.knowledge-card i{font-size:28px;color:var(--primary-color);margin-bottom:12px}.knowledge-card h4{font-size:0.85rem;margin-bottom:8px}.knowledge-card p{font-size:0.75rem;color:var(--gray-500);line-height:1.5}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.manual-input{grid-template-columns:1fr}.options-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.input-tabs{justify-content:center}.chart-container{height:300px}.knowledge-grid{grid-template-columns:1fr}}