/* 基础样式 */
  
        
        /* 加载界面样式 */
        #loading-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #ffffff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s ease-out;
        }
        
        .loading-content {
            text-align: center;
        }
        
        .company-logo {
            width: 260px;
            height: auto;
            margin-bottom: 30px;
            animation: pulse 2s infinite;
        }
        
        .loading-text {
            font-size: 18px;
            color: #666;
            margin-bottom: 20px;
        }
        
        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid #f3f3f3;
            border-top: 5px solid #3498db;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin: 0 auto;
        }
        
        /* 主内容样式 */
        #main-content {
            display: none;
          
            max-width: 100%;
            margin: 0 auto;
        }
        
        
        /* 动画定义 */
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }