style: 调整对话框和按钮尺寸，更新工具提示文本以提高清晰度，并对教师和创建者的选择实施下拉可见性处理。

src/assets/styles/index.scss

@@ -394,7 +394,7 @@ li{
 
 .custom-confirm-dialog {
   max-width: 692px;
-  min-width: 692px;
+  min-width: 600px;
   min-height: 222px !important;
   padding: 0px 0px 0px;
   border-radius: 10px;
@@ -465,9 +465,9 @@ li{
     padding-bottom: 20px;
 
     .el-button {
-      min-width: 120px;
+      width: 70px;
-      height: 40px;
+      height: 32px;
-      font-size: 16px;
+      font-size: 14px;
       border-radius: 6px;
       padding: 0 18px;
     }

src/views/course/ManageListRemote.vue

@@ -26,6 +26,7 @@
                 :remote-method="remoteSearchTeacher"
                 :loading="teacherLoading"
                 @input.native="limitTeacherInput"
+                @visible-change="handleTeacherVisibleChange"
                 @change="handleTeacherChange"
                 @clear="handleTeacherClear"
               >
@@ -70,8 +71,8 @@
             {{ showAdvancedFilter ? '收起' : '展开' }}
             <i :class="showAdvancedFilter ? 'el-icon-arrow-up' : 'el-icon-arrow-down'"></i>
           </el-button>
-          <el-tooltip content="搜索" placement="top" effect="dark" popper-class="icon-btn-tooltip">
+          <el-tooltip content="查询" placement="top" effect="dark" popper-class="icon-btn-tooltip">
-            <div class="icon-btn icon-btn--search" @click="searchData(true)" aria-label="搜索"></div>
+            <div class="icon-btn icon-btn--search" @click="searchData(true)" aria-label="查询"></div>
           </el-tooltip>
           <el-tooltip content="重置" placement="top" effect="dark" popper-class="icon-btn-tooltip">
             <div class="icon-btn icon-btn--reset" @click="reset" aria-label="重置"></div>
@@ -103,6 +104,7 @@
               @change="handleResOwnerChange"
               @input.native="limitResOwnerInput"
               filterable
+              :filter-method="resOwnerFilterMethod"
             ></el-cascader>
           </div>
           <div class="filter-field filter-field--creator creator-filter">
@@ -121,6 +123,7 @@
                 :remote-method="remoteSearchCreator"
                 :loading="creatorLoading"
                 @input.native="limitCreatorInput"
+                @visible-change="handleCreatorVisibleChange"
                 @change="handleCreatorChange"
                 @clear="handleCreatorClear"
               >
@@ -143,8 +146,8 @@
             {{ showAdvancedFilter ? '收起' : '展开' }}
             <i :class="showAdvancedFilter ? 'el-icon-arrow-up' : 'el-icon-arrow-down'"></i>
           </el-button>
-          <el-tooltip content="搜索" placement="top" effect="dark" popper-class="icon-btn-tooltip">
+          <el-tooltip content="查询" placement="top" effect="dark" popper-class="icon-btn-tooltip">
-            <div class="icon-btn icon-btn--search" @click="searchData(true)" aria-label="搜索"></div>
+            <div class="icon-btn icon-btn--search" @click="searchData(true)" aria-label="查询"></div>
           </el-tooltip>
           <el-tooltip content="重置" placement="top" effect="dark" popper-class="icon-btn-tooltip">
             <div class="icon-btn icon-btn--reset" @click="reset" aria-label="重置"></div>
@@ -741,6 +744,16 @@ export default {
       this.teacherOptions = [];
       this.params.teacherId = '';
     },
+    // 授课教师下拉展开时，如果当前没有关键字，则清空上一次的查询结果
+    handleTeacherVisibleChange(visible) {
+      if (!visible) return;
+      // 打开时才处理
+      const select = this.$refs.teacherSelect;
+      const query = (select && select.query) || '';
+      if (!query) {
+        this.teacherOptions = [];
+      }
+    },
     async remoteSearchCreator(keyword) {
       const limited = (keyword || '').slice(0, 50);
       if (this.$refs.creatorSelect && this.$refs.creatorSelect.query !== limited) {
@@ -793,6 +806,15 @@ export default {
       this.creatorSelected = [];
       this.params.createUserId = '';
     },
+    // 创建人下拉展开时，如果当前没有关键字，则清空上一次的查询结果
+    handleCreatorVisibleChange(visible) {
+      if (!visible) return;
+      const select = this.$refs.creatorSelect;
+      const query = (select && select.query) || '';
+      if (!query) {
+        this.creatorOptions = [];
+      }
+    },
     limitTeacherInput(event) {
       const limited = (event && event.target && event.target.value ? event.target.value : '').slice(0, 50);
       if (event && event.target && event.target.value !== limited) {
@@ -820,6 +842,12 @@ export default {
         this.$refs.resOwnerCascader.inputValue = limited;
       }
     },
+    resOwnerFilterMethod(node, keyword) {
+      if (!keyword) return true;
+      const text = (node.label || (node.data && node.data.name) || '').toString().toLowerCase();
+      const kw = keyword.toString().toLowerCase();
+      return text.includes(kw);
+    },
     handleTopSort() {
       if (this.$refs.topSorter) {
         this.$refs.topSorter.open();
@@ -1078,7 +1106,7 @@ export default {
         const url = window.URL.createObjectURL(blob);
         const timestamp = new Date().toISOString().replace(/[-:T]/g, '').split('.')[0];
         link.href = url;
-        link.download = `课程管理_${timestamp}.xlsx`;
+        link.download = `在线课列表.xlsx`;
         document.body.appendChild(link);
         link.click();
         document.body.removeChild(link);
@@ -2150,6 +2178,35 @@ export default {
     padding: 5px 0;
   }
 }
+.qrcode-img {
+  width: 150px;
+  height: 150px;
+  display: block;
+  position: relative;
+  .downloadn-container {
+    position: absolute;
+    width: 40px;
+    height: 45px;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    z-index: 99;
+    background: white;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    transition: all 0.3s ease;
+    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
+    cursor: pointer;
+    span {
+      color: #409eff;
+      display: block;
+      font-size: 12px;
+      line-height: 12px;
+    }
+  }
+}
 </style>
 
 <style lang="scss">