diff --git a/app/index/view/pc/public/header.html b/app/index/view/pc/public/header.html
index b0d9e99e..e2cec73b 100644
--- a/app/index/view/pc/public/header.html
+++ b/app/index/view/pc/public/header.html
@@ -11,8 +11,9 @@
             </div>
             <div class="header-nav-items">
                 {if condition="!empty($header_categorys)"}
-                <div class="header-nav-item">
+                <div class="header-nav-item" >
                     <div class="header-nav-title">{:lang_i18n('产品列表')}</div>
+                    <!-- style=" opacity: 1;" -->
                     <div class="header-dropdown" >
                         <div class="header-dropdown-tabs">
                             {volist name="header_categorys" id="vo" key="idx"}
@@ -190,40 +191,41 @@
 </div>
 <div style="width: 100vw;height: 64px;"></div>
 <div id="mhk"></div>
-<script>
 
-    // // 获取所有包含商品卡片的元素
+<script>
+    // 获取所有包含商品卡片的元素
     const productCards = document.querySelectorAll('.header-buy-product-card');
 
     productCards.forEach(card => {
-            // 获取卡片内的图片容器和两张图片
-            const imgContainer = card.querySelector('.header-buy-product-img');
-            const defaultImg = imgContainer?.querySelector('.header-default-img');
-            const hoverImg = imgContainer?.querySelector('.header-hover-img');
+        // 获取卡片内的图片容器和两张图片
+        const imgContainer = card.querySelector('.header-buy-product-img');
+        const defaultImg = imgContainer?.querySelector('.header-default-img');
+        const hoverImg = imgContainer?.querySelector('.header-hover-img');
 
-            // 检查悬浮图是否存在（因为HTML中用了if判断，所以可能有也可能没有这个元素）
-            const hasHoverImg = hoverImg !== null;
+        // 检查悬浮图是否存在（因为HTML中用了if判断，所以可能有也可能没有这个元素）
+        const hasHoverImg = hoverImg !== null;
 
-            // 如果没有悬浮图，不需要任何交互，直接返回
-            if (!hasHoverImg) return;
+        // 如果没有悬浮图，不需要任何交互，直接返回
+        if (!hasHoverImg) return;
 
-            // 初始状态确保普通图显示，悬浮图隐藏
+        // 初始状态确保普通图显示，悬浮图隐藏
+        defaultImg.style.opacity = '1';
+        hoverImg.style.opacity = '0';
+
+        // 鼠标移入事件：显示悬浮图，隐藏普通图
+        card.addEventListener('mouseenter', () => {
+            defaultImg.style.opacity = '0';
+            hoverImg.style.opacity = '1';
+        });
+
+        // 鼠标移出事件：恢复普通图，隐藏悬浮图
+        card.addEventListener('mouseleave', () => {
             defaultImg.style.opacity = '1';
             hoverImg.style.opacity = '0';
-
-            // 鼠标移入事件：显示悬浮图，隐藏普通图
-            card.addEventListener('mouseenter', () => {
-                defaultImg.style.opacity = '0';
-                hoverImg.style.opacity = '1';
-            });
-
-            // 鼠标移出事件：恢复普通图，隐藏悬浮图
-            card.addEventListener('mouseleave', () => {
-                defaultImg.style.opacity = '1';
-                hoverImg.style.opacity = '0';
-            });
+        });
     });
-    //产品列表在hover复位tabs选择
+
+    // 产品列表在hover复位tabs选择
     const productNavContainer = document.querySelector('.header-nav-item:first-child');
 
     if (productNavContainer) {
@@ -247,20 +249,15 @@
         });
     }
 
-
-
     const tabItems1 = document.querySelectorAll('.header-tab-item');
     const tabContents = document.querySelectorAll('.header-tab-content');
 
-    tabItems1.forEach(tab =>
-    {
-        tab.addEventListener('mouseenter', () =>
-        {
+    tabItems1.forEach(tab => {
+        tab.addEventListener('mouseenter', () => {
             tabItems1.forEach(item => item.classList.remove('active'));
             tab.classList.add('active');
             const tabId = tab.getAttribute('data-tab');
-            tabContents.forEach(content =>
-            {
+            tabContents.forEach(content => {
                 content.classList.remove('active');
                 if (content.id === tabId) {
                     content.classList.add('active');
@@ -271,33 +268,31 @@
 
     let searchHistory = JSON.parse(localStorage.getItem('searchHistory') || '[]');
 
-    function renderHistory ()
-    {
+    function renderHistory() {
         const historyList = document.getElementById('historyList');
         const historySection = document.getElementById('searchHistory');
         if (searchHistory.length === 0) {
-            historySection.style.display = 'none';
+            if (historySection) historySection.style.display = 'none';
             return;
         }
-        historySection.style.display = 'block';
-        historyList.innerHTML = searchHistory.map((item, index) => `
-            <div class="header-history-item" data-keyword="${item}">
-                <span>${item}</span>
-                <span class="header-delete-icon" data-index="${index}">✕</span>
-            </div>
-        `).join('');
-        document.querySelectorAll('.header-history-item').forEach(item =>
-        {
+        if (historySection) historySection.style.display = 'block';
+        if (historyList) {
+            historyList.innerHTML = searchHistory.map((item, index) => `
+                <div class="header-history-item" data-keyword="${item}">
+                    <span>${item}</span>
+                    <span class="header-delete-icon" data-index="${index}">✕</span>
+                </div>
+            `).join('');
+        }
+        document.querySelectorAll('.header-history-item').forEach(item => {
             const keyword = item.getAttribute('data-keyword');
             const deleteBtn = item.querySelector('.header-delete-icon');
-            item.addEventListener('click', (e) =>
-            {
+            item.addEventListener('click', (e) => {
                 if (e.target === deleteBtn) return;
                 performSearch(keyword);
             });
             if (deleteBtn) {
-                deleteBtn.addEventListener('click', (e) =>
-                {
+                deleteBtn.addEventListener('click', (e) => {
                     e.stopPropagation();
                     const index = parseInt(deleteBtn.getAttribute('data-index'));
                     searchHistory.splice(index, 1);
@@ -308,8 +303,7 @@
         });
     }
 
-    function addToHistory (keyword)
-    {
+    function addToHistory(keyword) {
         if (!keyword.trim()) return;
         searchHistory = searchHistory.filter(item => item !== keyword);
         searchHistory.unshift(keyword);
@@ -320,16 +314,14 @@
 
     const clearHistoryBtn = document.getElementById('clearHistory');
     if (clearHistoryBtn) {
-        clearHistoryBtn.addEventListener('click', () =>
-        {
+        clearHistoryBtn.addEventListener('click', () => {
             searchHistory = [];
             localStorage.setItem('searchHistory', JSON.stringify(searchHistory));
             renderHistory();
         });
     }
 
-    function performSearch (keyword)
-    {
+    function performSearch(keyword) {
         if (keyword.trim()) {
             addToHistory(keyword);
             window.location.href = "{:url('product/search')}?keywords=" + encodeURIComponent(keyword);
@@ -344,67 +336,178 @@
     const searchSubmit = document.querySelector('.header-search-submit');
     const langDropdown = document.getElementById('langDropdown');
     const buyDropdown = document.getElementById('buyDropdown');
+    const mhk = document.getElementById('mhk');
+    const body = document.body;
 
     const langCloseBtn = document.querySelector('.header-lang-dropdown-delete-icon');
     const searchCloseBtn = document.querySelector('.header-search-dropdown-delete-icon');
 
+    // 保存滚动位置
+    let scrollTopPosition = 0;
+
+    // 打开蒙版层（禁止滚动，不抖动）
+    function openOverlay() {
+        if (mhk && mhk.style.display !== 'block') {
+            // 保存当前滚动位置
+            scrollTopPosition = window.pageYOffset || document.documentElement.scrollTop;
+            
+            mhk.style.display = 'block';
+            
+            // 禁止滚动，保持位置
+            body.style.position = 'fixed';
+            body.style.top = `-${scrollTopPosition}px`;
+            body.style.left = '0';
+            body.style.right = '0';
+            body.style.width = '100%';
+        }
+    }
+
+    // 关闭蒙版层（恢复滚动）
+    function closeOverlay() {
+        if (mhk && mhk.style.display === 'block') {
+            const isBuyOpen = buyDropdown && buyDropdown.classList.contains('show');
+            const isSearchOpen = searchDropdown && searchDropdown.classList.contains('show');
+            const isLangOpen = langDropdown && langDropdown.classList.contains('show');
+            
+            // 检查是否有任何导航下拉菜单打开
+            let hasNavOpen = false;
+            document.querySelectorAll('.header-dropdown').forEach(dropdown => {
+                const style = window.getComputedStyle(dropdown);
+                if (style.opacity === '1') {
+                    hasNavOpen = true;
+                }
+            });
+            
+            if (!isBuyOpen && !isSearchOpen && !isLangOpen && !hasNavOpen) {
+                mhk.style.display = 'none';
+                
+                // 恢复滚动
+                body.style.position = '';
+                body.style.top = '';
+                body.style.left = '';
+                body.style.right = '';
+                body.style.width = '';
+                
+                // 恢复滚动位置
+                window.scrollTo(0, scrollTopPosition);
+            }
+        }
+    }
+
+    // ========== header-dropdown 导航下拉菜单打开时显示蒙版 ==========
+    function initNavDropdownOverlay() {
+        const navItems = document.querySelectorAll('.header-nav-item');
+        let hideTimer = null;
+
+        navItems.forEach(item => {
+            const dropdown = item.querySelector('.header-dropdown');
+            if (!dropdown) return;
+
+            // 鼠标移入导航项
+            item.addEventListener('mouseenter', () => {
+                if (hideTimer) clearTimeout(hideTimer);
+                openOverlay();
+            });
+
+            // 鼠标移出导航项
+            item.addEventListener('mouseleave', () => {
+                hideTimer = setTimeout(() => {
+                    const isHoveringDropdown = dropdown && dropdown.matches(':hover');
+                    if (!isHoveringDropdown) {
+                        const isBuyOpen = buyDropdown && buyDropdown.classList.contains('show');
+                        const isSearchOpen = searchDropdown && searchDropdown.classList.contains('show');
+                        const isLangOpen = langDropdown && langDropdown.classList.contains('show');
+                        if (!isBuyOpen && !isSearchOpen && !isLangOpen) {
+                            closeOverlay();
+                        }
+                    }
+                }, 100);
+            });
+
+            // 鼠标移入下拉菜单
+            dropdown.addEventListener('mouseenter', () => {
+                if (hideTimer) clearTimeout(hideTimer);
+                openOverlay();
+            });
+
+            // 鼠标移出下拉菜单
+            dropdown.addEventListener('mouseleave', () => {
+                hideTimer = setTimeout(() => {
+                    const isHoveringNav = item && item.matches(':hover');
+                    if (!isHoveringNav) {
+                        const isBuyOpen = buyDropdown && buyDropdown.classList.contains('show');
+                        const isSearchOpen = searchDropdown && searchDropdown.classList.contains('show');
+                        const isLangOpen = langDropdown && langDropdown.classList.contains('show');
+                        if (!isBuyOpen && !isSearchOpen && !isLangOpen) {
+                            closeOverlay();
+                        }
+                    }
+                }, 100);
+            });
+        });
+    }
+
+    // 关闭所有导航下拉菜单
+    function closeAllNavDropdowns() {
+        document.querySelectorAll('.header-dropdown').forEach(dropdown => {
+            dropdown.style.opacity = '';
+            dropdown.style.transform = '';
+            dropdown.style.pointerEvents = '';
+        });
+    }
+
     // 语言关闭按钮
-    if (langCloseBtn && langCloseBtn) {
-        langCloseBtn.addEventListener('click', (e) =>
-        {
+    if (langCloseBtn) {
+        langCloseBtn.addEventListener('click', (e) => {
             e.stopPropagation();
-            langDropdown.classList.remove('show');
-
+            if (langDropdown) langDropdown.classList.remove('show');
+            closeOverlay();
         });
     }
-    //搜索关闭
-    if (searchCloseBtn && searchCloseBtn) {
-        searchCloseBtn.addEventListener('click', (e) =>
-        {
 
+    // 搜索关闭按钮
+    if (searchCloseBtn) {
+        searchCloseBtn.addEventListener('click', (e) => {
             e.stopPropagation();
-            searchDropdown.classList.remove('show');
-
+            if (searchDropdown) searchDropdown.classList.remove('show');
+            closeOverlay();
         });
     }
-    // 鼠标移入导航项时，关闭购买下拉框
+
+    // 鼠标移入导航项时，关闭其他弹窗
     const navItems = document.querySelectorAll('.header-nav-item');
-    navItems.forEach(item =>
-    {
-
-        item.addEventListener('mouseenter', () =>
-        {
-
-            buyDropdown.classList.remove('show');
-            langDropdown.classList.remove('show');
-            searchDropdown.classList.remove('show');
-
+    navItems.forEach(item => {
+        item.addEventListener('mouseenter', () => {
+            if (buyDropdown) buyDropdown.classList.remove('show');
+            if (langDropdown) langDropdown.classList.remove('show');
+            if (searchDropdown) searchDropdown.classList.remove('show');
         });
     });
 
+    // 搜索按钮点击
     if (searchBtn && searchDropdown) {
-        searchBtn.addEventListener('click', (e) =>
-        {
+        searchBtn.addEventListener('click', (e) => {
             e.stopPropagation();
             if (langDropdown) langDropdown.classList.remove('show');
             if (buyDropdown) buyDropdown.classList.remove('show');
             searchDropdown.classList.toggle('show');
             if (searchDropdown.classList.contains('show')) {
                 renderHistory();
+                openOverlay();
+            } else {
+                closeOverlay();
             }
         });
     }
 
     if (searchSubmit) {
-        searchSubmit.addEventListener('click', () =>
-        {
+        searchSubmit.addEventListener('click', () => {
             performSearch(searchInput.value);
         });
     }
 
     if (searchInput) {
-        searchInput.addEventListener('keypress', (e) =>
-        {
+        searchInput.addEventListener('keypress', (e) => {
             if (e.key === 'Enter') {
                 performSearch(searchInput.value);
             }
@@ -412,37 +515,44 @@
     }
 
     const hotProducts = document.querySelectorAll('.header-hot-product-item');
-    hotProducts.forEach(product =>
-    {
-        product.addEventListener('click', () =>
-        {
+    hotProducts.forEach(product => {
+        product.addEventListener('click', () => {
             const keyword = product.getAttribute('data-keyword');
             if (keyword) performSearch(keyword);
         });
     });
 
+    // 语言按钮点击
     const langBtn = document.querySelector('.header-lang-wrapper .header-nav-btn');
     if (langBtn && langDropdown) {
-        langBtn.addEventListener('click', (e) =>
-        {
+        langBtn.addEventListener('click', (e) => {
             e.stopPropagation();
             if (searchDropdown) searchDropdown.classList.remove('show');
             if (buyDropdown) buyDropdown.classList.remove('show');
             langDropdown.classList.toggle('show');
+            if (langDropdown.classList.contains('show')) {
+                openOverlay();
+            } else {
+                closeOverlay();
+            }
         });
     }
 
+    // 购买按钮点击
     const buyWrapper = document.querySelector('.header-buy-wrapper');
     if (buyWrapper && buyDropdown) {
-        buyWrapper.addEventListener('click', () =>
-        {
-            // buyDropdown.classList.add('show');
+        buyWrapper.addEventListener('click', () => {
             buyDropdown.classList.toggle('show');
+            if (buyDropdown.classList.contains('show')) {
+                openOverlay();
+            } else {
+                closeOverlay();
+            }
         });
     }
 
-    document.addEventListener('click', (e) =>
-    {
+    // 全局点击关闭
+    document.addEventListener('click', (e) => {
         if (!e.target.closest('.header-search-wrapper')) {
             if (searchDropdown) searchDropdown.classList.remove('show');
         }
@@ -452,438 +562,202 @@
         if (!e.target.closest('.header-buy-wrapper')) {
             if (buyDropdown) buyDropdown.classList.remove('show');
         }
+        // 关闭所有导航下拉菜单
+        if (!e.target.closest('.header-nav-item')) {
+            closeAllNavDropdowns();
+            closeOverlay();
+        }
     });
 
+    // 阻止弹窗冒泡
     if (searchDropdown) searchDropdown.addEventListener('click', (e) => e.stopPropagation());
     if (langDropdown) langDropdown.addEventListener('click', (e) => e.stopPropagation());
     if (buyDropdown) buyDropdown.addEventListener('click', (e) => e.stopPropagation());
 
-    renderHistory();
-
-// ========== 蒙版层功能（支持所有弹窗，包括导航悬停下拉） ==========
-const mhk = document.getElementById('mhk');
-const body = document.body;
-
-// 获取滚动条宽度（防止打开弹窗时页面抖动）
-function getScrollbarWidth() {
-    const scrollDiv = document.createElement('div');
-    scrollDiv.style.cssText = `
-        width: 100px;
-        height: 100px;
-        overflow: scroll;
-        position: absolute;
-        top: -9999px;
-    `;
-    document.body.appendChild(scrollDiv);
-    const scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
-    console.log(scrollbarWidth,'=scrollbarWidth=')
-    document.body.removeChild(scrollDiv);
-
-    return scrollbarWidth;
-}
-
-// 打开蒙版层的函数
-function openOverlay() {
-    if (mhk && mhk.style.display !== 'block') {
-        mhk.style.display = 'block';
-        body.style.overflow = 'hidden';
-        body.style.paddingRight = getScrollbarWidth() + 'px';
+    // 蒙版层点击关闭
+    if (mhk) {
+        mhk.addEventListener('click', () => {
+            if (searchDropdown) searchDropdown.classList.remove('show');
+            if (langDropdown) langDropdown.classList.remove('show');
+            if (buyDropdown) buyDropdown.classList.remove('show');
+            closeAllNavDropdowns();
+            closeOverlay();
+        });
     }
-}
 
-// 关闭蒙版层的函数
-function closeOverlay() {
-    if (mhk && mhk.style.display === 'block') {
-        // 检查是否还有其他弹窗打开（包括导航下拉菜单）
-        const isBuyOpen = buyDropdown && buyDropdown.classList.contains('show');
-        const isSearchOpen = searchDropdown && searchDropdown.classList.contains('show');
-        const isLangOpen = langDropdown && langDropdown.classList.contains('show');
+    // 监听弹窗状态变化关闭蒙版
+    function setupDropdownObserver(dropdown) {
+        if (!dropdown) return;
+        const observer = new MutationObserver((mutations) => {
+            mutations.forEach((mutation) => {
+                if (mutation.attributeName === 'class') {
+                    if (!dropdown.classList.contains('show')) {
+                        closeOverlay();
+                    }
+                }
+            });
+        });
+        observer.observe(dropdown, { attributes: true });
+    }
 
-        // 检查导航下拉菜单是否打开（通过检查是否有 active 或显示状态）
-        const productDropdown = document.querySelector('.header-nav-item:first-child .header-dropdown');
-        const isProductDropdownOpen = productDropdown && window.getComputedStyle(productDropdown).display !== 'none';
+    setupDropdownObserver(buyDropdown);
+    setupDropdownObserver(searchDropdown);
+    setupDropdownObserver(langDropdown);
 
-        // 检查其他导航下拉菜单
-        let isOtherNavOpen = false;
-        const otherNavItems = document.querySelectorAll('.header-nav-item:not(:first-child)');
-        otherNavItems.forEach(item => {
+    // ========== header-dropdown JS 控制版本（带防抖） ==========
+    function initHeaderDropdown() {
+        const navItems = document.querySelectorAll('.header-nav-item');
+        let hoverTimer = null;
+        let leaveTimer = null;
+        let currentOpenDropdown = null;
+        
+        // 获取所有下拉菜单并设置初始状态
+        const allDropdowns = document.querySelectorAll('.header-dropdown');
+        allDropdowns.forEach(dropdown => {
+            dropdown.style.opacity = '0';
+            dropdown.style.transform = 'translateY(-1.25em)';
+            dropdown.style.pointerEvents = 'none';
+            dropdown.style.transition = 'opacity 0.3s ease, transform 0.3s ease';
+        });
+        
+        // 显示下拉菜单
+        function showDropdown(dropdown) {
+            if (!dropdown) return;
+            // 关闭当前打开的
+            if (currentOpenDropdown && currentOpenDropdown !== dropdown) {
+                hideDropdown(currentOpenDropdown);
+            }
+            dropdown.style.opacity = '1';
+            dropdown.style.transform = 'translateY(0)';
+            dropdown.style.pointerEvents = 'auto';
+            currentOpenDropdown = dropdown;
+        }
+        
+        // 隐藏下拉菜单
+        function hideDropdown(dropdown) {
+            if (!dropdown) return;
+            dropdown.style.opacity = '0';
+            dropdown.style.transform = 'translateY(-1.25em)';
+            dropdown.style.pointerEvents = 'none';
+            if (currentOpenDropdown === dropdown) {
+                currentOpenDropdown = null;
+            }
+        }
+        
+        // 隐藏所有下拉菜单
+        function hideAllDropdowns() {
+            allDropdowns.forEach(dropdown => {
+                dropdown.style.opacity = '0';
+                dropdown.style.transform = 'translateY(-1.25em)';
+                dropdown.style.pointerEvents = 'none';
+            });
+            currentOpenDropdown = null;
+        }
+        
+        navItems.forEach(item => {
             const dropdown = item.querySelector('.header-dropdown');
-            if (dropdown && window.getComputedStyle(dropdown).display !== 'none') {
-                isOtherNavOpen = true;
-            }
-        });
-
-        // 只有当所有弹窗和导航下拉菜单都关闭时，才关闭蒙版层
-        if (!isBuyOpen && !isSearchOpen && !isLangOpen && !isProductDropdownOpen && !isOtherNavOpen) {
-            mhk.style.display = 'none';
-            body.style.overflow = '';
-            body.style.paddingRight = '';
-        }
-    }
-}
-
-// 强制关闭所有弹窗和蒙版
-function closeAllDropdownsAndOverlay() {
-    let anyOpen = false;
-
-    if (buyDropdown && buyDropdown.classList.contains('show')) {
-        buyDropdown.classList.remove('show');
-        anyOpen = true;
-    }
-    if (searchDropdown && searchDropdown.classList.contains('show')) {
-        searchDropdown.classList.remove('show');
-        anyOpen = true;
-    }
-    if (langDropdown && langDropdown.classList.contains('show')) {
-        langDropdown.classList.remove('show');
-        anyOpen = true;
-    }
-
-    // 关闭产品列表导航的下拉菜单（通过移除hover触发的显示）
-    const productNavItem = document.querySelector('.header-nav-item:first-child');
-    if (productNavItem) {
-        const productDropdown = productNavItem.querySelector('.header-dropdown');
-        if (productDropdown && window.getComputedStyle(productDropdown).display !== 'none') {
-            productDropdown.style.display = '';
-            anyOpen = true;
-        }
-    }
-
-    // 关闭其他导航的下拉菜单
-    const otherNavItems = document.querySelectorAll('.header-nav-item:not(:first-child)');
-    otherNavItems.forEach(item => {
-        const dropdown = item.querySelector('.header-dropdown');
-        if (dropdown && window.getComputedStyle(dropdown).display !== 'none') {
-            dropdown.style.display = '';
-            anyOpen = true;
-        }
-    });
-
-    if (anyOpen) {
-        closeOverlay();
-    } else {
-        closeOverlay();
-    }
-}
-
-// ========== 监听导航下拉菜单的显示/隐藏 ==========
-
-// 1. 产品列表导航（第一个导航项）
-const productNavItem = document.querySelector('.header-nav-item:first-child');
-if (productNavItem) {
-    const productDropdown = productNavItem.querySelector('.header-dropdown');
-
-    // 监听鼠标进入产品列表导航
-    productNavItem.addEventListener('mouseenter', () => {
-        // 当导航下拉菜单显示时，关闭其他点击弹窗
-        if (searchDropdown && searchDropdown.classList.contains('show')) {
-            searchDropdown.classList.remove('show');
-        }
-        if (langDropdown && langDropdown.classList.contains('show')) {
-            langDropdown.classList.remove('show');
-        }
-        if (buyDropdown && buyDropdown.classList.contains('show')) {
-            buyDropdown.classList.remove('show');
-        }
-        // 打开蒙版层
-        openOverlay();
-    });
-
-    // 监听鼠标离开产品列表导航（延迟关闭，给用户移动到下拉菜单的时间）
-    productNavItem.addEventListener('mouseleave', () => {
-        setTimeout(() => {
-            // 检查鼠标是否在下拉菜单上
-            if (productDropdown) {
-                const isHoveringDropdown = productDropdown.matches(':hover');
-                const isHoveringNav = productNavItem.matches(':hover');
-                if (!isHoveringDropdown && !isHoveringNav) {
-                    closeOverlay();
-                }
-            } else {
-                closeOverlay();
-            }
-        }, 100);
-    });
-
-    // 监听下拉菜单的鼠标离开事件
-    if (productDropdown) {
-        productDropdown.addEventListener('mouseleave', () => {
-            setTimeout(() => {
-                const isHoveringNav = productNavItem.matches(':hover');
-                if (!isHoveringNav) {
-                    closeOverlay();
-                }
-            }, 100);
-        });
-    }
-}
-
-// 2. 其他导航项（有下拉菜单的）
-const otherNavItems = document.querySelectorAll('.header-nav-item:not(:first-child)');
-otherNavItems.forEach(item => {
-    const hasDropdown = item.querySelector('.header-dropdown');
-    if (hasDropdown) {
-        const dropdown = hasDropdown;
-
-        // 监听鼠标进入导航项
-        item.addEventListener('mouseenter', () => {
-            // 关闭其他点击弹窗
-            if (searchDropdown && searchDropdown.classList.contains('show')) {
-                searchDropdown.classList.remove('show');
-            }
-            if (langDropdown && langDropdown.classList.contains('show')) {
-                langDropdown.classList.remove('show');
-            }
-            if (buyDropdown && buyDropdown.classList.contains('show')) {
-                buyDropdown.classList.remove('show');
-            }
-            // 打开蒙版层
-            openOverlay();
-        });
-
-        // 监听鼠标离开导航项
-        item.addEventListener('mouseleave', () => {
-            setTimeout(() => {
-                if (dropdown) {
-                    const isHoveringDropdown = dropdown.matches(':hover');
-                    const isHoveringNav = item.matches(':hover');
-                    if (!isHoveringDropdown && !isHoveringNav) {
-                        closeOverlay();
-                    }
-                } else {
-                    closeOverlay();
-                }
-            }, 100);
-        });
-
-        // 监听下拉菜单的鼠标离开
-        if (dropdown) {
-            dropdown.addEventListener('mouseleave', () => {
-                setTimeout(() => {
-                    const isHoveringNav = item.matches(':hover');
-                    if (!isHoveringNav) {
-                        closeOverlay();
-                    }
+            if (!dropdown) return;
+            
+            // 鼠标移入导航项
+            item.addEventListener('mouseenter', () => {
+                // 清除离开定时器
+                if (leaveTimer) clearTimeout(leaveTimer);
+                if (hoverTimer) clearTimeout(hoverTimer);
+                
+                // 防抖：延迟100ms再显示，避免频繁触发
+                hoverTimer = setTimeout(() => {
+                    // 关闭其他弹窗（搜索、语言、购买）
+                    if (searchDropdown) searchDropdown.classList.remove('show');
+                    if (langDropdown) langDropdown.classList.remove('show');
+                    if (buyDropdown) buyDropdown.classList.remove('show');
+                    
+                    showDropdown(dropdown);
+                    // 打开蒙版层
+                    if (typeof openOverlay === 'function') openOverlay();
                 }, 100);
             });
-        }
-    }
-});
-
-// ========== 重新绑定所有点击弹窗事件 ==========
-
-// 1. 购买弹窗
-const buyWrapperNew = document.querySelector('.header-buy-wrapper');
-if (buyWrapperNew && buyDropdown) {
-    const newBuyWrapper = buyWrapperNew.cloneNode(true);
-    buyWrapperNew.parentNode.replaceChild(newBuyWrapper, buyWrapperNew);
-
-    newBuyWrapper.addEventListener('click', (e) => {
-        e.stopPropagation();
-        const isOpen = buyDropdown.classList.contains('show');
-
-        if (isOpen) {
-            buyDropdown.classList.remove('show');
-            closeOverlay();
-        } else {
-            // 关闭其他弹窗和导航下拉菜单
-            if (searchDropdown && searchDropdown.classList.contains('show')) {
-                searchDropdown.classList.remove('show');
-            }
-            if (langDropdown && langDropdown.classList.contains('show')) {
-                langDropdown.classList.remove('show');
-            }
-            // 关闭导航下拉菜单
-            closeAllNavDropdowns();
-
-            buyDropdown.classList.add('show');
-            openOverlay();
-        }
-    });
-}
-
-// 2. 搜索弹窗
-const searchBtnNew = document.querySelector('.header-search-wrapper .header-nav-btn');
-if (searchBtnNew && searchDropdown) {
-    const newSearchBtn = searchBtnNew.cloneNode(true);
-    searchBtnNew.parentNode.replaceChild(newSearchBtn, searchBtnNew);
-
-    newSearchBtn.addEventListener('click', (e) => {
-        e.stopPropagation();
-        const isOpen = searchDropdown.classList.contains('show');
-
-        if (isOpen) {
-            searchDropdown.classList.remove('show');
-            closeOverlay();
-        } else {
-            // 关闭其他弹窗和导航下拉菜单
-            if (buyDropdown && buyDropdown.classList.contains('show')) {
-                buyDropdown.classList.remove('show');
-            }
-            if (langDropdown && langDropdown.classList.contains('show')) {
-                langDropdown.classList.remove('show');
-            }
-            // 关闭导航下拉菜单
-            closeAllNavDropdowns();
-
-            searchDropdown.classList.add('show');
-            openOverlay();
-            if (typeof renderHistory === 'function') {
-                renderHistory();
-            }
-        }
-    });
-}
-
-// 3. 语言弹窗
-const langBtnNew = document.querySelector('.header-lang-wrapper .header-nav-btn');
-if (langBtnNew && langDropdown) {
-    const newLangBtn = langBtnNew.cloneNode(true);
-    langBtnNew.parentNode.replaceChild(newLangBtn, langBtnNew);
-
-    newLangBtn.addEventListener('click', (e) => {
-        e.stopPropagation();
-        const isOpen = langDropdown.classList.contains('show');
-
-        if (isOpen) {
-            langDropdown.classList.remove('show');
-            closeOverlay();
-        } else {
-            // 关闭其他弹窗和导航下拉菜单
-            if (buyDropdown && buyDropdown.classList.contains('show')) {
-                buyDropdown.classList.remove('show');
-            }
-            if (searchDropdown && searchDropdown.classList.contains('show')) {
-                searchDropdown.classList.remove('show');
-            }
-            // 关闭导航下拉菜单
-            closeAllNavDropdowns();
-
-            langDropdown.classList.add('show');
-            openOverlay();
-        }
-    });
-}
-
-// 辅助函数：关闭所有导航下拉菜单
-function closeAllNavDropdowns() {
-    // 关闭产品列表导航下拉菜单
-    const productNavItem = document.querySelector('.header-nav-item:first-child');
-    if (productNavItem) {
-        const productDropdown = productNavItem.querySelector('.header-dropdown');
-        if (productDropdown) {
-            productDropdown.style.display = '';
-        }
-    }
-
-    // 关闭其他导航下拉菜单
-    const otherNavItems = document.querySelectorAll('.header-nav-item:not(:first-child)');
-    otherNavItems.forEach(item => {
-        const dropdown = item.querySelector('.header-dropdown');
-        if (dropdown) {
-            dropdown.style.display = '';
-        }
-    });
-}
-
-// ========== 关闭按钮事件重新绑定 ==========
-
-// 语言关闭按钮
-const langCloseBtnNew = document.querySelector('.header-lang-dropdown-delete-icon');
-if (langCloseBtnNew && langDropdown) {
-    const newLangCloseBtn = langCloseBtnNew.cloneNode(true);
-    langCloseBtnNew.parentNode.replaceChild(newLangCloseBtn, langCloseBtnNew);
-
-    newLangCloseBtn.addEventListener('click', (e) => {
-        e.stopPropagation();
-        langDropdown.classList.remove('show');
-        closeOverlay();
-    });
-}
-
-// 搜索关闭按钮
-const searchCloseBtnNew = document.querySelector('.header-search-dropdown-delete-icon');
-if (searchCloseBtnNew && searchDropdown) {
-    const newSearchCloseBtn = searchCloseBtnNew.cloneNode(true);
-    searchCloseBtnNew.parentNode.replaceChild(newSearchCloseBtn, searchCloseBtnNew);
-
-    newSearchCloseBtn.addEventListener('click', (e) => {
-        e.stopPropagation();
-        searchDropdown.classList.remove('show');
-        closeOverlay();
-    });
-}
-
-// ========== 全局点击事件 ==========
-document.addEventListener('click', (e) => {
-    // 检查是否点击在购买区域外
-    if (!e.target.closest('.header-buy-wrapper') && !e.target.closest('#buyDropdown')) {
-        if (buyDropdown && buyDropdown.classList.contains('show')) {
-            buyDropdown.classList.remove('show');
-            closeOverlay();
-        }
-    }
-
-    // 检查是否点击在搜索区域外
-    if (!e.target.closest('.header-search-wrapper') && !e.target.closest('#searchDropdown')) {
-        if (searchDropdown && searchDropdown.classList.contains('show')) {
-            searchDropdown.classList.remove('show');
-            closeOverlay();
-        }
-    }
-
-    // 检查是否点击在语言区域外
-    if (!e.target.closest('.header-lang-wrapper') && !e.target.closest('#langDropdown')) {
-        if (langDropdown && langDropdown.classList.contains('show')) {
-            langDropdown.classList.remove('show');
-            closeOverlay();
-        }
-    }
-
-    // 检查是否点击在导航区域外（如果点击在导航外部，关闭导航下拉菜单）
-    if (!e.target.closest('.header-nav-item')) {
-        closeAllNavDropdowns();
-        closeOverlay();
-    }
-});
-
-// ========== 蒙版层点击事件 ==========
-if (mhk) {
-    mhk.addEventListener('click', () => {
-        closeAllDropdownsAndOverlay();
-        closeAllNavDropdowns();
-        closeOverlay();
-    });
-}
-
-// ========== 监听弹窗状态变化 ==========
-function setupDropdownObserver(dropdown, name) {
-    if (!dropdown) return;
-
-    const observer = new MutationObserver((mutations) => {
-        mutations.forEach((mutation) => {
-            if (mutation.attributeName === 'class') {
-                if (!dropdown.classList.contains('show')) {
-                    closeOverlay();
-                }
+            
+            // 鼠标移出导航项
+            item.addEventListener('mouseleave', () => {
+                // 清除移入定时器
+                if (hoverTimer) clearTimeout(hoverTimer);
+                
+                // 延迟300ms再隐藏，给用户移动到下拉菜单的时间
+                leaveTimer = setTimeout(() => {
+                    // 检查鼠标是否在下拉菜单上
+                    const isHoveringDropdown = dropdown.matches(':hover');
+                    if (!isHoveringDropdown) {
+                        hideDropdown(dropdown);
+                        // 关闭蒙版层
+                        if (typeof closeOverlay === 'function') closeOverlay();
+                    }
+                }, 300);
+            });
+            
+            // 鼠标移入下拉菜单
+            dropdown.addEventListener('mouseenter', () => {
+                if (leaveTimer) clearTimeout(leaveTimer);
+                showDropdown(dropdown);
+            });
+            
+            // 鼠标移出下拉菜单
+            dropdown.addEventListener('mouseleave', () => {
+                leaveTimer = setTimeout(() => {
+                    const isHoveringNav = item.matches(':hover');
+                    if (!isHoveringNav) {
+                        hideDropdown(dropdown);
+                        // 关闭蒙版层
+                        if (typeof closeOverlay === 'function') closeOverlay();
+                    }
+                }, 200);
+            });
+        });
+        
+        // 点击其他地方关闭所有下拉菜单
+        document.addEventListener('click', (e) => {
+            if (!e.target.closest('.header-nav-item')) {
+                hideAllDropdowns();
+                if (typeof closeOverlay === 'function') closeOverlay();
             }
         });
-    });
-    observer.observe(dropdown, { attributes: true });
-}
-
-setupDropdownObserver(buyDropdown, 'buy');
-setupDropdownObserver(searchDropdown, 'search');
-setupDropdownObserver(langDropdown, 'lang');
-
-// ========== 页面卸载时恢复滚动 ==========
-window.addEventListener('beforeunload', () => {
-    if (body) {
-        body.style.overflow = '';
-        body.style.paddingRight = '';
+        
+        // 暴露方法供外部调用
+        window.headerDropdown = {
+            hideAll: hideAllDropdowns,
+            show: showDropdown,
+            hide: hideDropdown
+        };
     }
-});
 
-// 确保蒙版层初始状态正确
-closeOverlay();
-</script>
+    // 初始化（在 DOM 加载完成后执行）
+    if (document.readyState === 'loading') {
+        document.addEventListener('DOMContentLoaded', initHeaderDropdown);
+    } else {
+        initHeaderDropdown();
+    }
+    
+
+
+
+    // 页面卸载时恢复滚动
+    window.addEventListener('beforeunload', () => {
+        if (body) {
+            body.style.position = '';
+            body.style.top = '';
+            body.style.left = '';
+            body.style.right = '';
+            body.style.width = '';
+        }
+    });
+
+    // 初始化导航下拉菜单蒙版层
+    initNavDropdownOverlay();
+
+    // 初始化渲染
+    renderHistory();
+    closeOverlay();
+
+
+
+
+</script>
\ No newline at end of file
diff --git a/public/static/index/pc/css/header.css b/public/static/index/pc/css/header.css
index 3e5de00f..d6529b57 100644
--- a/public/static/index/pc/css/header.css
+++ b/public/static/index/pc/css/header.css
@@ -4,7 +4,10 @@
     box-sizing: border-box;
     font-family: '微软雅黑', sans-serif;
 }
-
+html {
+    overflow-y: scroll;
+    scrollbar-gutter: stable ;
+}
 body {
     overflow-x: hidden;
 
@@ -41,7 +44,7 @@ a {
 .header-nav-bar {
     width: 100%;
     max-width: 1520px;
-    height: 4em;
+    height:64px;
     display: flex;
     align-items: center;
     flex-wrap: nowrap;
@@ -256,25 +259,36 @@ a {
 
 /* ========== 以下为原有样式，保持不变 ========== */
 
-/* 原有的下拉框样式 */
+/* 原有的下拉框样式 - 带动画效果 */
 .header-dropdown {
     box-sizing: border-box;
     max-width: 1920px;
     width: 100%;
     position: absolute;
-    top: 4em;
+    top: 64px;
     left: 0;
     right: 0;
     background-color: #fff;
-    z-index: 199;
+    z-index: 999;
     border-top: none;
     overflow: hidden;
     padding-bottom: 2.375em;
-    display: none;
+    opacity: 0;
+    transform: translateY(-1.25em);
+    pointer-events: none;
+    transition: opacity 0.3s ease, transform 0.3s ease;
+   
 }
 
-.header-nav-item:hover .header-dropdown {
-    display: block;
+/* .header-nav-item:hover .header-dropdown {
+    opacity: 1;
+    transform: translateY(0);
+    pointer-events: auto;
+} */
+
+/* 添加动画锁定时的不响应状态 */
+.header-dropdown.animating-out {
+    pointer-events: none;
 }
 
 /* Tabs切换栏：居中，宽度100%（基于下拉框内容区） */
@@ -952,7 +966,7 @@ a {
     }
 
     .header-dropdown-content1 {
-        padding: 0 12em;
+        padding: 2em 12em;
     }
 
     .header-buy-dropdown {
@@ -980,7 +994,7 @@ a {
     }
 
     .header-dropdown-content1 {
-        padding: 0 10em;
+        padding: 2em 10em;
     }
 
     .header-buy-dropdown {
@@ -1008,7 +1022,7 @@ a {
     }
 
     .header-dropdown-content1 {
-        padding: 0 8em;
+        padding: 2em 8em;
     }
 
     .header-buy-dropdown {
@@ -1020,6 +1034,7 @@ a {
         row-gap: 60px;
     }
 }
+/* 蒙版层样式 */
 #mhk {
     width: 100%;
     height: 100%;
@@ -1028,6 +1043,7 @@ a {
     left: 0;
     backdrop-filter: blur(5px);
     background-color: rgba(0, 0, 0, 0.5);
-    z-index: 88;
+    z-index: 90;
     display: none;
+    overflow: hidden;
 }