.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)}.options-section{margin-bottom:24px}.options-section h3{font-size:1rem;margin-bottom:16px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.options-grid{background:var(--gray-50);border-radius:20px;padding:20px;display:grid;grid-template-columns:repeat(auto-fit, minmax(240px, 1fr));gap:20px}.option-group label{display:block;font-size:0.85rem;font-weight:500;margin-bottom:8px;color:var(--gray-700)}.type-buttons{display:flex;flex-wrap:wrap;gap:8px}.type-btn{background:white;border:1px solid var(--gray-200);padding:6px 14px;border-radius:30px;font-size:0.75rem;cursor:pointer;transition:all 0.2s}.type-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:white}.count-control,.depth-control,.array-control{display:flex;align-items:center;gap:16px}.count-control input,.depth-control input,.array-control input{flex:1}.range-value{min-width:40px;font-family:monospace;font-weight:600;color:var(--primary-color)}.custom-fields{background:var(--gray-50);border-radius:20px;padding:16px 20px;margin-bottom:24px}.fields-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-weight:500;font-size:0.85rem}.fields-list{display:flex;flex-direction:column;gap:8px}.field-item{display:flex;gap:12px;align-items:center}.field-item input{padding:6px 12px;border:1px solid var(--gray-300);border-radius:8px;font-size:0.8rem}.field-item .field-name{flex:0 0 120px}.field-item .field-type{flex:0 0 100px}.field-item .field-value{flex:1;color:var(--gray-500);font-size:0.75rem}.field-item .remove-field{background:transparent;border:none;color:var(--gray-400);cursor:pointer}.field-item .remove-field:hover{color:#ef4444}.calc-section{text-align:center;margin:24px 0}.calc-btn{padding:12px 40px;font-size:1rem}.result-section{background:white;border-radius:20px;border:1px solid var(--gray-200);overflow:hidden;margin-bottom:32px;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}.result-content{padding:20px;background:#1a1a2e;max-height:500px;overflow-y:auto}.result-pre{font-family:'Fira Code',monospace;font-size:0.85rem;color:#4ade80;word-break:break-all;white-space:pre-wrap;margin:0}.result-footer{padding:12px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;gap:20px;font-size:0.7rem;color:var(--gray-500)}.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)}.options-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:repeat(2, 1fr)}.field-item{flex-wrap:wrap}.field-item .field-name,.field-item .field-type{flex:1}}@media (max-width:600px){.stats-grid{grid-template-columns:1fr}.knowledge-grid{grid-template-columns:1fr}.type-buttons{flex-direction:column}}