@charset "UTF-8"

        .container {
            max-width: 1100px;
            margin: 0 auto;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }

        .description {
            color: #ecf0f1;
            max-width: 700px;
            margin: 0 auto;
        }
        .main-content {
            display: flex;
            flex-direction: column;
            padding: 20px;
        }
        .upload-section {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
            text-align: center;
        }
        .file-input {
            margin: 15px 0;
            padding: 10px;
            width: 100%;
            max-width: 400px;
            border: 2px dashed #3498db;
            border-radius: 5px;
        }
        .btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            transition: background 0.3s;
            margin: 5px;
        }
        .btn:hover {
            background: #2980b9;
        }
        .btn:disabled {
            background: #95a5a6;
            cursor: not-allowed;
        }
        .canvas-container {
            width: 85%;
            height: 740px;
            border: 1px solid #ddd;
            border-radius: 8px;
            overflow: hidden;
            position: relative; 
            background: #1a1a1a;
            margin-bottom: 20px;
        }
        #dxfCanvas {
            background: #1a1a1a;
            display: block;
            position: absolute;
            top: 0;
            left: 0;
        }
        .controls {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .info-panel {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            margin-top: 20px;
        }
        .info-panel h3 {
            margin-bottom: 10px;
            color: #2c3e50;
        }
        .info-content {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
        }
        .info-item {
            background: white;
            padding: 10px;
            border-radius: 5px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
        }
        footer {
            text-align: center;
            padding: 20px;
            color: #7f8c8d;
            font-size: 14px;
        }
        .loading {
            display: block;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 18px;
            z-index: 10;
        }
        .copyright {
            display: block;
            position: absolute;
            top: 98%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: white;
            font-size: 8px;
            z-index: 11;
        }
        .status {
            margin-top: 10px;
            padding: 10px;
            border-radius: 5px;
            text-align: center;
        }
        .status.error {
            background: #ffebee;
            color: #c62828;
        }
        .status.success {
            background: #e8f5e9;
            color: #2e7d32;
        }

        .tblReporter {
            border-collapse:collapse;
        }

        @media (max-width: 768px) {
            .main-content {
                padding: 15px;
            }
            .canvas-container {
                height: 400px;
            }
        }


        /* 隐藏默认的下拉按钮 */
        .expanded-select {
            appearance: none; /* 移除浏览器默认样式 */
            -webkit-appearance: none;
            width: 100%;
            border: none;
            padding: 0;
            margin: 0;
            background: transparent;
        }

        /* 让所有选项可见（核心） */
        .expanded-select option {
            display: block; /* 每个选项单独占一行 */
            padding: 10px 15px;
            cursor: pointer;
            border-bottom: 1px solid #eee;
        }

        /* 选项交互样式 */
        .expanded-select option:hover {
            background-color: #f0f7ff;
        }

        .expanded-select option:checked {
            background-color: #6699CC;  !important
            color: #6699CC;
            font-weight: bold;
        }

        /* 去除聚焦时的默认边框 */
        .expanded-select:focus {
            outline: none;
        }

        .tech-tool {
            width:260px; 
            height:260px;
            padding:10px;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 10px;
        }
        
        .data-table th, .data-table td {
            padding: 10px;
            text-align: center;
            border: 1px solid #d0ddee;
        }
        
        .data-table th {
            background: #6699CC;
            color: white;
        }
        
        .data-table tr:nth-child(even) {
            background: #e5eff5;
        }