diff --git a/src/views/study/coursenew.vue b/src/views/study/coursenew.vue
index f7f58b28..1de3c7a0 100644
--- a/src/views/study/coursenew.vue
+++ b/src/views/study/coursenew.vue
@@ -1,6 +1,12 @@
 <template>
   <div>
     <div class="xpage-coures-banner">
+      <portal-header
+        current="course"
+        textColor="#fff"
+        :goSearch="1"
+      ></portal-header>
+      <div style="margin: 0px 80px">
       <portal-header
         current="course"
         textColor="#fff"
@@ -1993,11 +1999,23 @@
         timedOut = true;
         xmlhttp.abort();
       }, 1000);
-      xmlhttp.open(
-        "HEAD",
-        window.location.protocol + "//uapi.boe.com.cn/500.html",
-        true
+      // 1. 拼接随机参数（时间戳+随机数，确保URL唯一，破缓存）
+      const url =
+        window.location.protocol +
+        "//uapi.boe.com.cn/500.html?t=" +
+        Date.now() +
+        Math.random();
+      // 2. 打开 HEAD 请求（URL已带随机参数）
+      xmlhttp.open("HEAD", url, true);
+
+      // 3. 设置禁用缓存的请求头（覆盖现代浏览器+老IE+代理）
+      xmlhttp.setRequestHeader(
+        "Cache-Control",
+        "no-cache, no-store, must-revalidate"
       );
+      xmlhttp.setRequestHeader("Pragma", "no-cache"); // IE兼容
+      xmlhttp.setRequestHeader("Expires", "0"); // 禁止过期缓存复用
+      // xmlhttp.open("HEAD", window.location.protocol + "//uapi.boe.com.cn/500.html", true);
       xmlhttp.send();
       xmlhttp.onreadystatechange = function () {
         if (xmlhttp.readyState == 4) {
@@ -2229,23 +2247,26 @@
       }, this.appentInterval * 1000);
     },
 
-      finishStudyItem() { //设置完成学习的内容,针对于音视频的内容
-        if (!this.contentData.studyItemId) {
-          //这种可能没有，不过这里也是为了万中那个1
-          !this.tentative && this.saveStudyInfo();
-        } else {
-          // 如果正在处理完成请求，则直接返回，避免重复调用
-          if (this.isFinishingStudyItem) {
-            return;
-          }
-          let params = {
-            itemId: this.contentData.studyItemId,
-            studyId: this.studyId,
-            courseId: this.courseId,
-            cnum: this.totalContent
-          }
-          this.isFinishingStudyItem = true; // 设置标志位
-          apiVideoStudy.finishStudyItem(params).then(res => {
+    finishStudyItem() {
+      //设置完成学习的内容,针对于音视频的内容
+      if (!this.contentData.studyItemId) {
+        //这种可能没有，不过这里也是为了万中那个1
+        !this.tentative && this.saveStudyInfo();
+      } else {
+        // 如果正在处理完成请求，则直接返回，避免重复调用
+        if (this.isFinishingStudyItem) {
+          return;
+        }
+        let params = {
+          itemId: this.contentData.studyItemId,
+          studyId: this.studyId,
+          courseId: this.courseId,
+          cnum: this.totalContent,
+        };
+        this.isFinishingStudyItem = true; // 设置标志位
+        apiVideoStudy
+          .finishStudyItem(params)
+          .then((res) => {
             if (res.status == 200) {
               this.contentData.status = 9;
               this.contentData.progress = 100;
@@ -2253,12 +2274,13 @@
               console.log("记录完成学习失败:" + res.message + "，" + res.error);
             }
             this.isFinishingStudyItem = false; // 重置标志位
-          }).catch(error => {
+          })
+          .catch((error) => {
             console.error("记录完成学习出错:", error);
             this.isFinishingStudyItem = false; // 出错时也重置标志位
           });
-        }
-      },
+      }
+    },
 
     saveStudyItem() {
       //先保存学习的内容,针对于音视频的内容
@@ -2519,20 +2541,20 @@
   }
 }
 
-  .player-box {
-    position: absolute;
-    width: 100%;
-    max-width: 300px;
-    margin: 20px auto;
-    height: 187px;
-    background: rgba(74, 74, 74, .8);
-    border-radius: 33px;
-    text-align: center;
-    padding: 20px;
-    top: 50%;
-    box-sizing: border-box;
-    left: 50%;
-    transform: translate(-50%, -50%);
+.player-box {
+  position: absolute;
+  width: 100%;
+  max-width: 300px;
+  margin: 20px auto;
+  height: 187px;
+  background: rgba(74, 74, 74, 0.8);
+  border-radius: 33px;
+  text-align: center;
+  padding: 20px;
+  top: 50%;
+  box-sizing: border-box;
+  left: 50%;
+  transform: translate(-50%, -50%);
 
   .player-praise {
     margin-top: 25px;