document.addEventListener("DOMContentLoaded", function () { const popupTrigger = document.getElementById('popup-trigger'); const popupWindow = document.getElementById('popup-window'); const popupClose = document.getElementById('popup-close');if (popupTrigger && popupWindow && popupClose) { popupTrigger.addEventListener('click', () => { popupWindow.classList.toggle('show'); });popupClose.addEventListener('click', () => { popupWindow.classList.remove('show'); });// 自動開啟(例如5秒後) setTimeout(() => { popupWindow.classList.add('show'); }, 5000); } });