.product-sidebar { width: 100%; font-family: "Arial", sans-serif; }.product-menu { list-style: none; margin: 0; padding: 0; }.product-menu > li { margin-bottom: 5px; position: relative; }.product-menu a { display: flex; justify-content: space-between; align-items: center; color: #333; text-decoration: none; padding: 8px 12px; border-radius: 4px; transition: all 0.2s ease; }.product-menu a:hover { color: #1aa54a; }.product-menu .active > a { color: #1aa54a; font-weight: 600; }/* 箭头样式 */ .arrow { display: inline-block; width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 6px solid #333; transition: transform 0.25s ease, border-color 0.25s ease; }/* 展开时箭头旋转 */ .has-submenu.active > a .arrow { transform: rotate(180deg); border-top-color: #1aa54a; }/* 二级菜单 */ .submenu { list-style: none; padding-left: 15px; margin-top: 5px; display: none; }.has-submenu.active .submenu { display: block; }.submenu a { padding: 6px 10px; display: block; color: #555; transition: color 0.2s ease; }.submenu a:hover { color: #1aa54a; }/* 箭头点击区域更大 */ .arrow { pointer-events: auto; cursor: pointer; }document.addEventListener("DOMContentLoaded", function() { const arrows = document.querySelectorAll(".has-submenu .arrow");arrows.forEach(arrow => { arrow.addEventListener("click", function(e) { e.preventDefault(); e.stopPropagation(); // 防止触发主链接跳转const parent = this.closest(".has-submenu"); const isActive = parent.classList.contains("active");// 关闭所有菜单 document.querySelectorAll(".has-submenu").forEach(li => li.classList.remove("active"));// 当前菜单展开 if (!isActive) parent.classList.add("active"); }); }); });