.stats-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:20px;margin-bottom:20px}.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:1.8rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.75rem;color:var(--gray-500)}.extra-stats{display:grid;grid-template-columns:repeat(6, 1fr);gap:12px;margin-bottom:24px}.extra-stat{background:var(--gray-50);border-radius:12px;padding:12px 16px;text-align:center}.extra-label{display:block;font-size:0.65rem;color:var(--gray-500)}.extra-value{display:block;font-size:1rem;font-weight:600;color:var(--gray-800)}.input-section{margin-bottom:24px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.section-header h3{font-size:1rem;display:flex;align-items:center;gap:8px}.input-actions{display:flex;gap:8px}.input-textarea{width:100%;min-height:180px;padding:16px;font-family:'Fira Code',monospace;font-size:0.9rem;border:1px solid var(--gray-300);border-radius:16px;resize:vertical;background:#1a1a2e;color:#e0e0e0;line-height:1.6}.input-textarea:focus{outline:none;border-color:var(--primary-color)}.input-footer{margin-top:8px;display:flex;justify-content:space-between;font-size:0.7rem;color:var(--gray-500)}.options-section{background:var(--gray-50);border-radius:20px;padding:20px;margin-bottom:24px}.options-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}.option-group label{display:block;font-size:0.8rem;font-weight:600;margin-bottom:10px;color:var(--gray-700)}.delimiter-buttons{display:flex;flex-wrap:wrap;gap:6px}.delim-btn{background:white;border:1px solid var(--gray-300);padding:5px 12px;border-radius:30px;font-size:0.7rem;cursor:pointer;transition:all 0.2s}.delim-btn i{margin-right:4px}.delim-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:white}.custom-delim{margin-top:10px}.custom-delim-input{width:100%;padding:8px 12px;border:1px solid var(--gray-300);border-radius:8px}.filter-options,.format-options{display:flex;flex-direction:column;gap:8px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.8rem}.checkbox-label input{display:none}.checkmark{width:18px;height:18px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative;transition:all 0.2s;flex-shrink:0}.checkbox-label input:checked+.checkmark{background:var(--primary-color);border-color:var(--primary-color)}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:10px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.format-select{padding:6px 12px;border:1px solid var(--gray-300);border-radius:8px;background:white}.action-section{display:flex;gap:16px;justify-content:center;margin-bottom:24px}.calc-btn{padding:12px 32px;font-size:1rem}.chart-section{margin-bottom:24px}.chart-container{padding:20px;background:white;border-radius:16px;margin-top:16px;max-height:350px}#numberChart{max-height:300px}.number-list-section{margin-bottom:24px}.number-list{display:flex;flex-wrap:wrap;gap:8px;padding:16px;background:var(--gray-50);border-radius:16px;margin-top:12px;max-height:200px;overflow-y:auto}.number-item{background:white;padding:6px 14px;border-radius:20px;font-family:'Fira Code',monospace;font-size:0.8rem;border:1px solid var(--gray-200)}.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}@media (max-width:900px){.stats-grid{grid-template-columns:repeat(2, 1fr)}.extra-stats{grid-template-columns:repeat(3, 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}.extra-stats{grid-template-columns:repeat(2, 1fr)}.action-section{flex-direction:column;align-items:center}.knowledge-grid{grid-template-columns:1fr}}