 // 添加的欢迎消息显示
                    redirectMessageElement.textContent = t.redirectMessage;
                    messageElement.style.display = 'block';
                    document.getElementById("loginForm").style.display = "none"; 

                    let countdown = 5;
                    const countdownElement = document.getElementById('countdown');
                    const intervalId = setInterval(() => {
                        countdown -= 1;
                        if (countdown <=