style: 统一页面按钮样式与尺寸

src/components/StartTask.vue

@@ -663,6 +663,7 @@ onUnmounted(() => {
       <el-button
         text
         size="small"
+        type="primary"
         @click="expectationContent = expectationSaved; expectationDialogVisible = true"
       >
         修改
@@ -749,12 +750,12 @@ onUnmounted(() => {
           />
           <div class="fragment-edit-actions">
             <el-button size="small" @click="cancelEditFragment">取消</el-button>
-            <el-button size="small" type="primary" :loading="savingFragment" @click="saveEditFragment(fragment.id)">保存</el-button>
+            <el-button size="small" type="success" :loading="savingFragment" @click="saveEditFragment(fragment.id)">保存</el-button>
           </div>
         </template>
         <template v-else>
           <span class="fragment-content">{{ fragment.content }}</span>
-          <el-button size="small" @click="startEditFragment(fragment)">编辑</el-button>
+          <el-button text type="primary" size="small" @click="startEditFragment(fragment)">编辑</el-button>
         </template>
       </div>
     </article>
@@ -1104,10 +1105,6 @@ onUnmounted(() => {
   gap: 8px;
 }
 
-.action-row .el-button {
-  margin: 0;
-}
-
 .fragments-card {
   padding: 20px;
 }
@@ -1172,14 +1169,6 @@ onUnmounted(() => {
   .info-grid {
     grid-template-columns: 1fr;
   }
-
-  .action-row {
-    flex-direction: column;
-  }
-
-  .action-row .el-button {
-    width: 100%;
-  }
 }
 
 /* ---- 历史学习记录 ---- */