diff --git a/src/assets/main.css b/src/assets/main.css
index 898f03c..edf0458 100644
--- a/src/assets/main.css
+++ b/src/assets/main.css
@@ -35,6 +35,27 @@ a:hover {
   box-shadow: var(--shadow-soft);
 }
 
+/* 按钮操作区统一规范：窄屏下操作按钮纵向全宽 */
+.action-row .el-button,
+.edit-actions .el-button,
+.fragment-edit-actions .el-button {
+  margin: 0;
+}
+
+@media (max-width: 768px) {
+  .action-row,
+  .edit-actions,
+  .fragment-edit-actions {
+    flex-direction: column;
+  }
+
+  .action-row .el-button,
+  .edit-actions .el-button,
+  .fragment-edit-actions .el-button {
+    width: 100%;
+  }
+}
+
 .fade-up-enter-active,
 .fade-up-leave-active {
   transition: opacity 0.22s ease, transform 0.22s ease;
diff --git a/src/components/Review.vue b/src/components/Review.vue
index 1af2157..51b836e 100644
--- a/src/components/Review.vue
+++ b/src/components/Review.vue
@@ -66,7 +66,7 @@ onMounted(() => {
   <section class="review-page">
     <div class="table-toolbar">
       <span class="toolbar-placeholder"></span>
-      <el-button type="success" plain size="small" :loading="loading" @click="loadTasks">刷新</el-button>
+      <el-button type="success" plain :loading="loading" @click="loadTasks">刷新</el-button>
     </div>
 
     <div class="summary-grid">
@@ -99,6 +99,7 @@ onMounted(() => {
             <el-button
               text
               type="success"
+              size="small"
               :loading="openingTaskNum === row.taskNum"
               @click.stop="openTaskReview(row)"
             >
@@ -106,7 +107,8 @@ onMounted(() => {
             </el-button>
             <el-button
               text
-              type="primary"
+              type="success"
+              size="small"
               @click.stop="router.push(`/review/recall/${row.taskNum}`)"
             >
               回忆复习
diff --git a/src/components/ReviewDetail.vue b/src/components/ReviewDetail.vue
index 44b024f..6990475 100644
--- a/src/components/ReviewDetail.vue
+++ b/src/components/ReviewDetail.vue
@@ -252,8 +252,8 @@ watch(
           placeholder="请输入学习内容"
         />
         <div class="edit-actions">
-          <el-button @click="cancelEdit">取消</el-button>
-          <el-button type="success" :loading="saving" @click="saveEdit">保存</el-button>
+          <el-button size="small" @click="cancelEdit">取消</el-button>
+          <el-button type="success" size="small" :loading="saving" @click="saveEdit">保存</el-button>
         </div>
       </div>
       <!-- 只读模式 -->
diff --git a/src/components/ReviewRecall.vue b/src/components/ReviewRecall.vue
index 87b2ffb..f25175a 100644
--- a/src/components/ReviewRecall.vue
+++ b/src/components/ReviewRecall.vue
@@ -374,7 +374,6 @@ onMounted(() => {
   <section class="recall-page">
     <!-- 顶部操作栏 -->
     <div class="page-header">
-      <el-button size="small" @click="router.back()">← 返回</el-button>
       <h2>回忆复习</h2>
       <el-button size="small" @click="loadHistory" v-if="!showHistory">
         历史记录
@@ -478,18 +477,16 @@ onMounted(() => {
         <div class="panel-actions">
           <el-button
             v-if="hasCompared"
-            size="small"
             type="success"
             @click="resetComparison"
           >
             返回完整导图
           </el-button>
-          <el-button size="small" @click="standardExpanded = !standardExpanded">
+          <el-button @click="standardExpanded = !standardExpanded">
             {{ standardExpanded ? "折叠" : "展开" }}
           </el-button>
           <el-button
             v-if="standardExpanded"
-            size="small"
             type="warning"
             :loading="regenerating"
             @click="handleRegenerate"
@@ -498,7 +495,6 @@ onMounted(() => {
           </el-button>
           <el-button
             v-if="standardExpanded && !editingStandard"
-            size="small"
             type="primary"
             @click="startEditStandard"
           >
@@ -612,9 +608,6 @@ onMounted(() => {
 
 .surface-card {
   padding: 20px 22px;
-  background: #fff;
-  border-radius: 8px;
-  border: 1px solid var(--border-soft, #e0e0e0);
 }
 
 .surface-card h3 {
diff --git a/src/components/StartTask.vue b/src/components/StartTask.vue
index c9cec14..064620a 100644
--- a/src/components/StartTask.vue
+++ b/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 ---- */
diff --git a/src/components/Study.vue b/src/components/Study.vue
index 572d973..66fb8ff 100644
--- a/src/components/Study.vue
+++ b/src/components/Study.vue
@@ -457,12 +457,12 @@ onMounted(() => {
 
         <aside class="surface-card action-card">
           <div class="block-title">常用操作</div>
-          <el-button size="large" @click="fetchTasks" :loading="loading">刷新列表</el-button>
+          <el-button @click="fetchTasks" :loading="loading">刷新列表</el-button>
           <el-button type="success" size="large" @click="startTask">开始任务</el-button>
-          <el-button size="large" @click="addTask">添加任务</el-button>
-          <el-button size="large" @click="changeTask">更新任务</el-button>
-          <el-button size="large" @click="openWeightsDialog">权重配置</el-button>
-          <el-button type="danger" size="large" @click="removeTask">删除任务</el-button>
+          <el-button @click="addTask">添加任务</el-button>
+          <el-button @click="changeTask">更新任务</el-button>
+          <el-button @click="openWeightsDialog">权重配置</el-button>
+          <el-button type="danger" @click="removeTask">删除任务</el-button>
         </aside>
       </main>
     </div>
diff --git a/src/components/TaskForm.vue b/src/components/TaskForm.vue
index 203d3e6..47fc233 100644
--- a/src/components/TaskForm.vue
+++ b/src/components/TaskForm.vue
@@ -410,7 +410,7 @@ async function previewMaterial() {
       <div class="group" v-if="isUpdateMode" v-loading="applicationLoading">
         <div class="application-header">
           <h3>应用场景</h3>
-          <el-button type="primary" @click="openApplicationDialog()">添加应用场景</el-button>
+          <el-button type="success" @click="openApplicationDialog()">添加应用场景</el-button>
         </div>
         <div class="application-list" v-if="applications.length > 0">
           <div class="application-item" v-for="item in applications" :key="item.id">
@@ -608,15 +608,6 @@ async function previewMaterial() {
     padding: 16px;
   }
 
-  .action-row {
-    flex-direction: column;
-  }
-
-  .action-row .el-button {
-    width: 100%;
-    margin: 0;
-  }
-
   .application-main {
     align-items: flex-start;
     flex-direction: column;
diff --git a/src/components/Welcome.vue b/src/components/Welcome.vue
index 8dbcc97..18a3d64 100644
--- a/src/components/Welcome.vue
+++ b/src/components/Welcome.vue
@@ -216,11 +216,11 @@ onMounted(() => {
       </div>
     </template>
     <template #footer>
-      <el-button v-if="!recallCard.revealed" type="success" @click="revealRecallContent">
+      <el-button v-if="!recallCard.revealed" type="success" plain @click="revealRecallContent">
         回忆好了，展开对照
       </el-button>
-      <el-button v-else type="success" @click="openRecallDetail">进入详情页</el-button>
-      <el-button type="success" plain @click="goToRecallFromCard">前往回忆复习</el-button>
+      <el-button v-else type="success" plain @click="openRecallDetail">进入详情页</el-button>
+      <el-button type="success" @click="goToRecallFromCard">前往回忆复习</el-button>
       <el-button @click="recallCard.visible = false">关闭</el-button>
     </template>
   </el-dialog>