更改所有页面中英文切换样式及JS功能代码 所有页面logo图片不切换

hanJing/index.html

@@ -26,7 +26,27 @@
              <li> <a id="nav-future" href="./html/approaching.html"> 展望未来</a></li>
              <li> <a id="nav-about" href="./html/aboutUs.html"> 关于我们</a></li>
          </ul>
-         <button class="language" id="lang-toggle" aria-label="切换语言" tabindex="0">English</button>
+         <!-- <button class="language" id="lang-toggle" aria-label="切换语言" tabindex="0">English</button> -->
+         <div class="lang-dropdown">
+            <button class="lang-btn" id="lang-btn" aria-label="选择语言" tabindex="0">
+                <img id="current-flag" src="./imgs/flags/zh.svg" alt="中文">
+                <span id="current-lang">简体中文</span>
+                <span class="arrow">▼</span>
+            </button>
+            <div class="lang-dropdown-content" id="lang-dropdown">
+                <div class="lang-item" data-lang="zh">
+                    <img src="./imgs/flags/zh.svg" alt="中文">
+                    <span>简体中文</span>
+                </div>
+                <div class="lang-item" data-lang="en">
+                    <img src="./imgs/flags/en.svg" alt="English">
+                    <span>English</span>
+                </div>
+            </div>
+        </div>
+      
+      
+      
         </div>
         <!-- <div class="bg">
             <img src="./imgs/svg/点纹.svg" alt="背景">