电脑端样式修改；

src/views/components/HistoryRecord.vue

@@ -16,7 +16,7 @@
       <img
         class="collapsed-toggle-btn"
         @click="openHistory"
-        src="https://d31zlh4on95l9h.cloudfront.net/images/b2d784f8607ab65081f5289459581bfe.png"
+        src="	https://d31zlh4on95l9h.cloudfront.net/images/815e7ebfb1963eadca9435e82c3c4a8d.png"
         alt="icon"
         title="打开边栏"
       />
@@ -30,7 +30,7 @@
       >
         <img
           class="collapsed-bottom-announcement"
-          src="https://d31zlh4on95l9h.cloudfront.net/images/c51c7fbb68671729801fb10d65bd7789.png"
+          src="https://d31zlh4on95l9h.cloudfront.net/images/172be9b9c4d936f2f6b182ef7a4bed10.png"
           alt="icon"
         />
       </div>
@@ -41,7 +41,7 @@
       >
         <img
           class="collapsed-bottom-feedback"
-          src="https://d31zlh4on95l9h.cloudfront.net/images/41d6e25c19466718d462bcee2f050140.png"
+          src="https://d31zlh4on95l9h.cloudfront.net/images/ed88a0a7095c3cd1e0b51ffcca7f4068.png"
           alt="icon"
         />
       </div>
@@ -62,7 +62,7 @@
         <img
           class="toggle-btn"
           @click="closeHistory"
-          src="https://d31zlh4on95l9h.cloudfront.net/images/b2d784f8607ab65081f5289459581bfe.png"
+          src="https://d31zlh4on95l9h.cloudfront.net/images/815e7ebfb1963eadca9435e82c3c4a8d.png"
           alt="icon"
           title="收起边栏"
         />
@@ -184,14 +184,14 @@
         <div class="bottom-btn" @click="handleAnnouncementClick" title="公告">
           <img
             class="bottom-announcement"
-            src="https://d31zlh4on95l9h.cloudfront.net/images/c51c7fbb68671729801fb10d65bd7789.png"
+            src="https://d31zlh4on95l9h.cloudfront.net/images/172be9b9c4d936f2f6b182ef7a4bed10.png"
             alt="icon"
           />
         </div>
         <div class="bottom-btn" @click="handleFeedbackClick" title="用户反馈">
           <img
             class="bottom-feedback"
-            src="https://d31zlh4on95l9h.cloudfront.net/images/41d6e25c19466718d462bcee2f050140.png"
+            src="https://d31zlh4on95l9h.cloudfront.net/images/ed88a0a7095c3cd1e0b51ffcca7f4068.png"
             alt="icon"
           />
         </div>

src/views/homePage.vue

@@ -1105,7 +1105,7 @@ onUnmounted(() => {
                 </div>
                 <div class="pc-backToHomeBtn" @click="backToHome()">
                   <img
-                    src="https://d31zlh4on95l9h.cloudfront.net/images/d8b388e461423f79087ddbe016002217.png"
+                    src="https://d31zlh4on95l9h.cloudfront.net/images/9cbc5b2eb2327bd04d015c19d8c3f1f9.png"
                     alt="返回首页"
                     class="pc-backImg"
                   />