.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-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}.variable-input{width:100%;padding:14px 20px;font-family:'Fira Code',monospace;font-size:1.1rem;border:2px solid var(--gray-300);border-radius:16px;transition:all 0.3s;background:#1a1a2e;color:#e0e0e0}.variable-input: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)}.style-section{margin-bottom:24px}.style-section h3{font-size:1rem;margin-bottom:16px;color:var(--gray-700);display:flex;align-items:center;gap:8px}.style-grid{display:grid;grid-template-columns:repeat(6, 1fr);gap:12px}.style-btn{background:var(--gray-50);border:2px solid var(--gray-200);border-radius:16px;padding:16px 12px;cursor:pointer;transition:all 0.3s;text-align:center}.style-btn i{font-size:24px;color:var(--gray-500);margin-bottom:8px;display:block}.style-btn span{display:block;font-weight:600;font-size:0.85rem}.style-btn small{display:block;font-size:0.65rem;color:var(--gray-400);margin-top:4px;font-family:'Fira Code',monospace}.style-btn.active{border-color:var(--primary-color);background:#e0e7ff}.style-btn.active i{color:var(--primary-color)}.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)}.option-select{width:100%;padding:8px 12px;border:1px solid var(--gray-300);border-radius:8px;background:white}.filter-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%)}.affix-inputs{display:flex;gap:8px}.affix-input{flex:1;padding:8px 12px;border:1px solid var(--gray-300);border-radius:8px;font-family:'Fira Code',monospace}.action-section{display:flex;gap:16px;justify-content:center;margin-bottom:24px}.convert-btn{padding:12px 32px;font-size:1rem}.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}.result-content{padding:16px 20px}.result-item{display:flex;align-items:center;padding:10px 0;border-bottom:1px solid var(--gray-200)}.result-item:last-child{border-bottom:none}.result-label{width:120px;font-weight:600;color:var(--gray-600);font-size:0.85rem}.result-value{font-family:'Fira Code',monospace;font-size:0.95rem;color:var(--primary-color);flex:1;word-break:break-all}.result-footer{padding:12px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);font-size:0.7rem;color:var(--gray-500)}.history-list{display:flex;flex-wrap:wrap;gap:8px;padding:12px 0}.history-item{background:var(--gray-100);padding:4px 12px;border-radius:20px;font-family:'Fira Code',monospace;font-size:0.75rem;cursor:pointer}.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)}.style-grid{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}.style-grid{grid-template-columns:repeat(2, 1fr)}.action-section{flex-direction:column;align-items:center}.knowledge-grid{grid-template-columns:1fr}}