* {
            box-sizing: border-box;
            font-family: system-ui, 'Segoe UI', 'Helvetica Neue', sans-serif;
        }

        body {
            background: #f8f9fa;
            margin: 0;
            min-height: 100vh;
            padding: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
		.navbar{
			height:80px !important;
			
		}
        /* 主容器 */
        .converter-container {
            max-width: 1200px;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 2rem;
            box-shadow: 0 5px 15px 2px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            padding: 2rem;
            transition: all 0.3s;
			margin-top:70px;
        }

        h1 {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 0.5rem 0;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            background-clip: text;
            color: #333;
            text-align: center;
        }

        .sub {
            text-align: center;
            color: #6b7280;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }

        /* 控制栏 */
        .controls-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-bottom: 30px;
            background: #f3f4f6;
            padding: 20px;
            border-radius: 1.5rem;
        }

        .upload-area {
            flex: 2;
            min-width: 200px;
        }

        .upload-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #0D6EFD;
            color: white;
            padding: 12px 28px;
            border-radius: 60px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            border: none;
            font-size: 1rem;
        }

        .upload-btn:hover {
          
            transform: scale(0.97);
        }

        #imageInput {
            display: none;
        }

        .format-panel {
            flex: 2;
            min-width: 200px;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .format-label {
           
            color: #374151;
        }

        .format-select {
            padding: 10px 16px;
            border-radius: 40px;
            border: 1px solid #d1d5db;
            background: white;
            font-size: 1rem;
            cursor: pointer;
            outline: none;
            font-weight: 500;
        }

        .format-select:focus {
            border-color: #4f46e5;
            ring: 2px solid #4f46e5;
        }

        .action-buttons {
           align-items:center;
		   margin-top:14px;
            border-radius: 20px !important;
			
			gap: 12px;
			justify-content: flex-end;
        }
		
		.cleanbtn{
			color:#e74032 !important;
		}

        
		.btn {
			
			border: none;
			padding: 0px 20px;
			border-radius: 40px;
			font-weight: 500;
			cursor: pointer;
			transition: 0.2s;
			box-shadow: 0 1px 3px rgba(0,0,0,0.1);
			
			border: 1px solid #cddfe7;
		}

        .btn-primary {
			background: #0D6EFD;
			color: white;
			border: none;
			padding: 10px 16px;
		}

        .btn-primary:hover {
            
            transform: scale(0.97);
        }

        .btn-danger {
            background: #ef4444;
            color: white;
            border: none;
        }

        .btn-danger:hover {
            background: #dc2626;
            transform: scale(0.98);
        }

        .btn:hover {
            transform: scale(0.98);
        }

        /* 图片网格 */
        .images-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 20px;
        }

        .image-card {
            background: white;
            border-radius: 1.2rem;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.2s;
            border: 1px solid #e5e7eb;
        }

        .image-card:hover {
            transform: translateY(-4px);
        }

        .card-header {
            padding: 12px;
            background: #f9fafb;
            border-bottom: 1px solid #e5e7eb;
            display: flex;
            justify-content: space-between;
            font-size: 0.75rem;
            color: #6b7280;
        }

        .preview-area {
            background: #f3f4f6;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 180px;
            padding: 16px;
        }

        .preview-img {
            max-width: 100%;
            max-height: 160px;
            object-fit: contain;
            border-radius: 8px;
        }

        .info-panel {
            padding: 12px;
            font-size: 0.8rem;
            background: white;
            display: flex;
            justify-content: space-between;
            border-top: 1px solid #f0f0f0;
        }

        .convert-status {
            color: #10b981;
            font-weight: 600;
        }

        .download-btn {
            background: #4f46e5;
            color: white;
            border: none;
            padding: 4px 16px;
            border-radius: 40px;
            font-weight: 500;
            cursor: pointer;
            margin: 12px;
            width: calc(100% - 24px);
            transition: 0.2s;
        }

        .download-btn:hover {
            background: #4338ca;
            transform: scale(0.98);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: #9ca3af;
            font-size: 1rem;
        }

        footer {
            margin-top: 30px;
            text-align: center;
            font-size: 0.8rem;
            color: #9ca3af;
        }

        @media (max-width: 640px) {
            .converter-container {
                padding: 1rem;
            }
            .controls-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .action-buttons {
                justify-content: stretch;
            }
            .btn {
                text-align: center;
            }
        }