.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)}.config-section,.columns-section{margin-bottom:24px}.config-section h3,.columns-header h3{font-size:1rem;margin-bottom:16px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.config-grid{background:var(--gray-50);border-radius:20px;padding:20px;display:grid;grid-template-columns:repeat(3, 1fr);gap:24px}.config-group label{display:block;font-size:0.85rem;font-weight:500;margin-bottom:8px;color:var(--gray-700)}.config-input-wrapper{display:flex;align-items:center;gap:16px}.config-input-wrapper input{flex:1}.config-value{min-width:40px;text-align:center;font-family:monospace;font-weight:600;color:var(--primary-color)}.config-select{width:100%;padding:10px 12px;border:1px solid var(--gray-300);border-radius:12px;background:white}.columns-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.columns-actions{display:flex;gap:8px}.columns-container{background:var(--gray-50);border-radius:20px;padding:20px;max-height:300px;overflow-y:auto}.column-item{display:flex;align-items:center;gap:12px;padding:10px 12px;background:white;border-radius:12px;margin-bottom:8px;border:1px solid var(--gray-200);transition:all 0.2s}.column-item:hover{border-color:var(--primary-color)}.column-item .col-index{width:28px;height:28px;background:var(--gray-100);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:600;color:var(--gray-600)}.column-item input{flex:1;padding:6px 12px;border:1px solid var(--gray-200);border-radius:8px;font-size:0.85rem}.column-item select{padding:6px 12px;border:1px solid var(--gray-200);border-radius:8px;font-size:0.85rem;background:white}.column-item .remove-col{background:transparent;border:none;color:#ef4444;cursor:pointer;padding:4px 8px;border-radius:6px}.column-item .remove-col:hover{background:#fee2e2}.calc-section{display:flex;gap:16px;justify-content:center;margin:24px 0;flex-wrap:wrap}.calc-btn{padding:12px 32px;font-size:1rem}.preview-section{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;margin-bottom:24px;animation:fadeIn 0.3s ease}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.preview-header h3{font-size:0.95rem;display:flex;align-items:center;gap:8px}.preview-table-wrapper{overflow-x:auto;padding:16px;max-height:400px;overflow-y:auto}.preview-table{width:100%;border-collapse:collapse;font-size:0.85rem}.preview-table th,.preview-table td{padding:10px 14px;border:1px solid var(--gray-200);text-align:left}.preview-table th{background:var(--gray-50);font-weight:600;position:sticky;top:0}.preview-table tr:nth-child(even){background:var(--gray-50)}.result-section{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;margin-bottom:24px;animation:fadeIn 0.3s ease}.result-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.result-header h3{font-size:1rem;display:flex;align-items:center;gap:8px}.result-actions{display:flex;gap:8px;flex-wrap:wrap}.result-content{padding:20px;background:#1a1a2e}.result-pre{font-family:'Fira Code',monospace;font-size:0.8rem;color:#4ade80;word-break:break-all;white-space:pre-wrap;margin:0;max-height:500px;overflow-y:auto}.result-footer{padding:12px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);font-size:0.7rem;color:var(--gray-500)}.format-info{display:flex;justify-content:center;gap:24px;padding:12px;background:var(--gray-50);border-radius:16px;margin-bottom:24px;flex-wrap:wrap}.format-item{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--gray-600)}.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)}.config-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.calc-section{flex-direction:column;align-items:stretch}.result-actions{flex-wrap:wrap}.knowledge-grid{grid-template-columns:1fr}}