body { font-family: 'Arial', sans-serif;
                    background-color: #f5f5f5;
                                                    display: flex;
                    justify-content: center;
                    align-items: center;
                    height: 100vh;
                    margin: 0;
               }
               .login-container {
                    background-color: white;
                    padding: 30px;
                    border-radius: 8px;
                    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
                    width: 100%;
                    max-width: 350px;
               }
               .login-header {
                    text-align: center;
                    margin-bottom: 25px;
               }
               .login-header h1 {
                    color: #333;
                    font-size: 24px;
                    margin: 0;
               }
               .input-group {
                    margin-bottom: 20px;
               }
               .input-group label {
                    display: block;
                    margin-bottom: 8px;
                    color: #555;
                    font-size: 14px;
               }
               .input-group input {
                    width: 100%;
                    padding: 10px;
                    border: 1px solid #ddd; 
                    border-radius: 4px;
                    font-size: 16px;
                    box-sizing: border-box;
               }
               .input-group input:focus {
                    outline: none;
                    border-color: #4285f4;
               }
               .login-button {
                    width: 100%; 
                    padding: 12px;
                    background-color: #4285f4;
                    color: white; 
                    border: none; 
                    border-radius: 4px;  
                    font-size: 16px; 
                    cursor: pointer;  
                    transition: background-color 0.3s;
                    background-image: none !important; /* 确保覆盖任何内联样式 */
               }
               .login-button:hover { 
                    background-color: #3367d6;
               }
               .forgot-password {
                     display: block;
                     text-align: center; 
                     margin-top: 15px; 
                     color: #4285f4;  
                     text-decoration: none;            font-size: 14px;
               }
               .forgot-password:hover {
                     text-decoration: underline;
               }
               .error-message { 
                    color: #d32f2f; 
                    font-size: 14px; 
                    margin-top: 5px;  
                    display: none;
               }