*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);color:var(--text);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:20px}.header{text-align:center;margin-bottom:30px}.header h1{font-size:2.5rem;color:#333;margin-bottom:10px}.header p{color:#666;font-size:1.1rem}.toolbar{background:#fff;border-radius:10px;padding:20px;margin-bottom:20px;box-shadow:0 2px 10px rgba(0,0,0,.1);display:flex;flex-wrap:wrap;gap:15px;align-items:center}.toolbar-group{display:flex;align-items:center;gap:10px;margin-right:30px}.toolbar-group label{font-weight:500;color:#555}.btn{padding:8px 16px;border:none;border-radius:6px;cursor:pointer;font-size:14px;transition:all .3s ease;background:var(--color-primary);color:#fff}.btn:hover{background:var(--color-primary-hover);transform:translateY(-1px)}.btn-secondary{background:#6c757d}.btn-secondary:hover{background:#5a6268}.btn-success{background:#28a745}.btn-success:hover{background:#218838}.main-content{display:grid;grid-template-columns:1fr 300px;gap:20px}.image-panel{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 10px rgba(0,0,0,.1);min-height:500px}.upload-area{border:2px dashed #ddd;border-radius:8px;padding:40px;text-align:center;background:#f8f9fa;transition:all .3s ease}.upload-area.dragover,.upload-area:hover{border-color:var(--color-primary);background:#f0f2ff}.upload-content h3{margin-bottom:10px;color:#333}.upload-content p{color:#666;margin-bottom:5px}.upload-hint{font-size:.9rem;color:#999;margin-bottom:20px}.upload-btn{background:linear-gradient(135deg,var(--color-primary) 0,#764ba2 100%);color:#fff;border:none;padding:12px 30px;border-radius:25px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px rgba(102,126,234,.3);margin-top:20px}.upload-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(102,126,234,.4)}.image-list{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:15px}.image-item{background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1);overflow:hidden;transition:all .3s ease;cursor:move;border:2px solid transparent}.image-item:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,.15);border-color:var(--color-primary)}.image-preview{position:relative;height:120px;overflow:hidden}.image-preview img{width:100%;height:100%;object-fit:cover}.image-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s ease}.image-item:hover .image-overlay{opacity:1}.delete-btn{background:#ff4757;color:#fff;border:none;width:30px;height:30px;border-radius:50%;font-size:1rem;cursor:pointer;transition:all .3s ease}.delete-btn:hover{background:#ff3742;transform:scale(1.1)}.image-info{padding:10px}.image-name{font-size:.8rem;color:#333;font-weight:500;margin-bottom:8px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.duration-control{display:flex;flex-direction:column;gap:4px}.duration-control label{font-size:.7rem;color:#666}.duration-control input{padding:4px 6px;border:1px solid #ddd;border-radius:4px;font-size:.7rem}.preview-panel{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 10px rgba(0,0,0,.1);height:fit-content}.preview-panel h3{margin-bottom:15px;color:#333}.preview-container{margin-top:15px}.preview-image{width:100%;max-width:250px;height:auto;border-radius:8px;border:1px solid #ddd}.controls{margin-bottom:0}.control-group{margin-bottom:15px;display:flex;gap:10px}.gif-info{background:#f8f9fa;padding:10px;border-radius:6px;border:1px solid #ddd;font-size:.8rem;color:#666;margin-top:10px}.gif-tips-box{background:#f0f2ff;border:1px solid var(--color-primary);border-radius:8px;padding:16px;margin:16px 0;font-size:.9rem}.gif-tips-title{font-weight:600;color:#333;margin-bottom:10px}.gif-tips-list{margin:0 0 12px 0;padding-left:20px;color:#555;line-height:1.6}.gif-tips-list li{margin-bottom:6px}.btn-crop{display:inline-block;padding:8px 16px;background:var(--color-primary);color:#fff;text-decoration:none;border-radius:6px;font-size:14px;transition:all .3s ease}.btn-crop:hover{background:var(--color-primary-hover);transform:translateY(-1px)}.how-to-section{margin-top:24px;background:#f8f9fa;border-radius:10px;padding:20px}.how-to-title{margin:0 0 16px 0;font-size:1.1rem;color:#333}.how-to-content{margin:0}.faq-section{margin-top:24px;background:#f8f9fa;border-radius:10px;padding:20px}.faq-title{margin:0 0 16px 0;font-size:1.1rem;color:#333}.faq-list{margin:0;font-size:.95rem}.faq-list dt{font-weight:600;color:#333;margin-top:12px}.faq-list dt:first-of-type{margin-top:0}.faq-list dd{margin:4px 0 0 0;color:#555;line-height:1.5}.how-to-steps{margin:0;padding-left:24px;line-height:1.8;color:#555}.how-to-steps li{margin-bottom:8px}.how-to-steps a{color:var(--color-primary);text-decoration:none}.how-to-steps a:hover{text-decoration:underline}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.8);display:flex;align-items:center;justify-content:center;z-index:1000}.loading-content{background:#fff;padding:40px;border-radius:15px;text-align:center;box-shadow:0 20px 40px rgba(0,0,0,.3)}.spinner{width:50px;height:50px;border:4px solid #f3f3f3;border-top:4px solid var(--color-primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}.loading-content p{font-size:1.1rem;color:#333}@media (max-width:768px){.container{padding:10px}.header h1{font-size:2rem}.toolbar{flex-direction:column;align-items:stretch}.toolbar-group{justify-content:space-between}.main-content{grid-template-columns:1fr}.image-list{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.control-group{flex-direction:column}}@media (max-width:480px){.header h1{font-size:1.5rem}.header p{font-size:1rem}.image-list{grid-template-columns:1fr}}