.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #8b5cf6, #6d28d9);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.stats-cards{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.stat-card{background:white;border-radius:60px;padding:16px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #ede9fe, #f5f3ff);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#8b5cf6;font-size:1.3rem}.stat-info{text-align:left}.stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.stat-label{font-size:0.7rem;color:var(--gray-500)}.remove-bg-container{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.upload-section,.result-section{background:linear-gradient(135deg, #fff, #fafafc);border-radius:24px;border:1px solid var(--gray-200);overflow:hidden}.upload-card{padding:20px}.upload-area{border:2px dashed var(--gray-300);border-radius:20px;padding:40px 20px;text-align:center;cursor:pointer;transition:all 0.3s;background:var(--gray-50)}.upload-area:hover{border-color:#8b5cf6;background:var(--gray-100)}.upload-area i{font-size:48px;color:var(--gray-400);margin-bottom:16px}.upload-area p{font-size:0.9rem;margin-bottom:8px}.upload-hint{font-size:0.7rem;color:var(--gray-400);display:block;margin-bottom:16px}.upload-btn{background:linear-gradient(135deg, #8b5cf6, #6d28d9);border:none;padding:10px 24px;border-radius:40px;color:white;cursor:pointer;font-size:0.85rem}.preview-card{margin-top:20px;animation:fadeIn 0.3s ease}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:0.85rem;font-weight:500}.clear-btn{background:transparent;border:none;cursor:pointer;color:var(--gray-500);padding:4px 8px;border-radius:20px}.clear-btn:hover{background:var(--gray-100);color:var(--danger-color)}.preview-container{background:#1a1a2e;border-radius:16px;padding:16px;text-align:center;min-height:250px;display:flex;align-items:center;justify-content:center}.preview-container img{max-width:100%;max-height:250px;object-fit:contain}.preview-info{display:flex;justify-content:space-between;margin-top:12px;font-size:0.7rem;color:var(--gray-500)}.result-card{padding:20px;height:100%;display:flex;flex-direction:column}.result-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;font-weight:500}.result-actions{display:flex;gap:8px}.action-btn{background:var(--gray-100);border:none;padding:6px 12px;border-radius:30px;font-size:0.7rem;cursor:pointer;transition:all 0.2s}.action-btn:hover{background:#8b5cf6;color:white}.result-container{flex:1;background:#1a1a2e;border-radius:16px;padding:16px;display:flex;align-items:center;justify-content:center;min-height:300px}.placeholder{text-align:center;color:var(--gray-500)}.placeholder i{font-size:48px;margin-bottom:16px;opacity:0.5}.result-container img{max-width:100%;max-height:280px;object-fit:contain}.options-bar{background:var(--gray-50);border-radius:20px;padding:16px 20px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:24px}.option-group{flex:1;min-width:200px}.option-group label{display:block;font-size:0.7rem;font-weight:600;color:var(--gray-500);margin-bottom:8px}.option-items{display:flex;flex-wrap:wrap;gap:8px}.option-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}.option-btn.active{background:#8b5cf6;border-color:#8b5cf6;color:white}#customColorGroup{display:flex;align-items:center;gap:16px}#bgColor{width:50px;height:36px;border:1px solid var(--gray-300);border-radius:8px;cursor:pointer}.examples-section{margin-bottom:24px}.divider{display:flex;align-items:center;gap:12px;margin-bottom:16px}.divider span{font-size:0.85rem;font-weight:500;color:var(--gray-600)}.divider::after{content:'';flex:1;height:1px;background:var(--gray-200)}.example-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px}.example-item{background:white;border-radius:16px;overflow:hidden;cursor:pointer;transition:all 0.3s;border:1px solid var(--gray-200);text-align:center}.example-item:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,0.1);border-color:#8b5cf6}.example-item img{width:100%;height:100px;object-fit:cover}.example-item span{display:block;padding:8px;font-size:0.7rem;color:var(--gray-600)}.info-section{margin-top:20px}.info-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;padding:16px;background:var(--gray-50);border-radius:20px}.info-item{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--gray-600)}.info-item i{color:#10b981}.sensitivity-control{display:flex;align-items:center;gap:12px;margin-top:8px}.sensitivity-control input{flex:1}.sensitivity-control span{min-width:40px;text-align:center;font-weight:500;color:#8b5cf6}.option-group small{display:block;font-size:0.6rem;color:var(--gray-400);margin-top:6px}.loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.7);display:flex;align-items:center;justify-content:center;border-radius:16px;z-index:10}.loading-spinner{text-align:center;color:white}.loading-spinner i{font-size:32px;animation:spin 1s linear infinite;margin-bottom:12px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width:900px){.remove-bg-container{grid-template-columns:1fr}.example-grid{grid-template-columns:repeat(2, 1fr)}.info-grid{grid-template-columns:repeat(2, 1fr)}.options-bar{flex-direction:column}}@media (max-width:480px){.stats-cards{gap:12px}.stat-card{padding:12px 20px}.example-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}}