diff --git a/src/oj/learn/index.vue b/src/oj/learn/index.vue
index 4960e11..be055b0 100644
--- a/src/oj/learn/index.vue
+++ b/src/oj/learn/index.vue
@@ -1,8 +1,9 @@
 <template>
-  <n-grid :cols="5" :x-gap="16" v-if="tutorial.id">
-    <n-gi :span="1">
-      <n-card title="目录" :bordered="false" size="small">
-        <n-scrollbar :style="{ maxHeight: 'calc(100vh - 180px)' }">
+  <div>
+    <!-- 桌面端布局 -->
+    <n-grid :cols="5" :x-gap="16" v-if="tutorial.id && isDesktop">
+      <n-gi :span="1">
+        <n-card title="教程目录" :bordered="false" size="small">
           <n-list hoverable clickable>
             <n-list-item
               v-for="(item, index) in titles"
@@ -17,30 +18,86 @@
               </n-text>
             </n-list-item>
           </n-list>
-        </n-scrollbar>
-      </n-card>
-    </n-gi>
+        </n-card>
+      </n-gi>
 
-    <n-gi :span="tutorial.code ? 2 : 4">
-      <n-card
-        :title="`第 ${step} 课：${titles[step - 1]?.title}`"
-        :bordered="false"
-        size="small"
-      >
-        <MdPreview
-          preview-theme="vuepress"
-          :theme="isDark ? 'dark' : 'light'"
-          :model-value="tutorial.content"
-        />
-      </n-card>
-    </n-gi>
+      <n-gi :span="tutorial.code ? 2 : 4">
+        <n-card
+          :title="`第 ${step} 课：${titles[step - 1]?.title}`"
+          :bordered="false"
+          size="small"
+        >
+          <MdPreview
+            preview-theme="vuepress"
+            :theme="isDark ? 'dark' : 'light'"
+            :model-value="tutorial.content"
+          />
+        </n-card>
+      </n-gi>
 
-    <n-gi :span="2" v-if="tutorial.code">
-      <n-card title="示例代码" :bordered="false" size="small">
-        <CodeEditor language="Python3" v-model="tutorial.code" />
-      </n-card>
-    </n-gi>
-  </n-grid>
+      <n-gi :span="2" v-if="tutorial.code">
+        <n-card title="示例代码" :bordered="false" size="small">
+          <CodeEditor language="Python3" v-model="tutorial.code" />
+        </n-card>
+      </n-gi>
+    </n-grid>
+
+    <!-- 手机端布局 -->
+    <template v-if="tutorial.id && !isDesktop">
+      <n-tabs type="line" animated v-model:value="activeTab">
+        <n-tab-pane name="catalog" tab="目录">
+          <n-list hoverable clickable>
+            <n-list-item
+              v-for="(item, index) in titles"
+              :key="item.id"
+              @click="goToLesson(index + 1)"
+            >
+              <n-text
+                :type="step === index + 1 ? 'primary' : undefined"
+                :strong="step === index + 1"
+              >
+                {{ index + 1 }}. {{ item.title }}
+              </n-text>
+            </n-list-item>
+          </n-list>
+        </n-tab-pane>
+
+        <n-tab-pane name="content" :tab="`第 ${step} 课`">
+          <MdPreview
+            preview-theme="vuepress"
+            :theme="isDark ? 'dark' : 'light'"
+            :model-value="tutorial.content"
+          />
+        </n-tab-pane>
+
+        <n-tab-pane name="code" tab="示例代码" v-if="tutorial.code">
+          <CodeEditor language="Python3" v-model="tutorial.code" />
+        </n-tab-pane>
+      </n-tabs>
+
+      <n-divider style="margin: 12px 0" />
+
+      <n-flex align="center" justify="space-between">
+        <n-button
+          secondary
+          type="primary"
+          :disabled="isFirstLesson"
+          @click="goToPrevLesson"
+        >
+          ← 上一课
+        </n-button>
+        <n-text>{{ step }} / {{ titles.length }}</n-text>
+        <n-button
+          secondary
+          type="primary"
+          :disabled="isLastLesson"
+          @click="goToNextLesson"
+        >
+          下一课 →
+        </n-button>
+      </n-flex>
+    </template>
+  </div>
 </template>
 
 <script setup lang="ts">
@@ -48,6 +105,7 @@ import { MdPreview } from "md-editor-v3"
 import "md-editor-v3/lib/preview.css"
 import { Tutorial } from "utils/types"
 import { getTutorial, getTutorials } from "../api"
+import { isDesktop } from "shared/composables/breakpoints"
 
 const CodeEditor = defineAsyncComponent(
   () => import("shared/components/CodeEditor.vue"),
@@ -72,12 +130,29 @@ const tutorial = ref<Partial<Tutorial>>({
 })
 
 const titles = ref<{ id: number; title: string }[]>([])
+const activeTab = ref("content")
+
+const isFirstLesson = computed(() => step.value === 1)
+const isLastLesson = computed(() => step.value === titles.value.length)
 
 function goToLesson(lessonNumber: number) {
+  activeTab.value = "content"
   const dest = lessonNumber.toString().padStart(2, "0")
   router.push("/learn/" + dest)
 }
 
+function goToPrevLesson() {
+  if (step.value > 1) {
+    goToLesson(step.value - 1)
+  }
+}
+
+function goToNextLesson() {
+  if (step.value < titles.value.length) {
+    goToLesson(step.value + 1)
+  }
+}
+
 async function init() {
   const res1 = await getTutorials()
   titles.value = res1.data
@@ -101,4 +176,12 @@ watch(
 :deep(.md-editor-preview .md-editor-code .md-editor-code-head) {
   z-index: 100;
 }
+
+:deep(.md-editor-preview h1) {
+  font-size: 1.6em;
+}
+
+:deep(.md-editor-preview h2) {
+  font-size: 1.4em;
+}
 </style>
diff --git a/src/shared/components/Header.vue b/src/shared/components/Header.vue
index d7df508..09fba53 100644
--- a/src/shared/components/Header.vue
+++ b/src/shared/components/Header.vue
@@ -86,7 +86,6 @@ const menus = computed<MenuOption[]>(() => [
     label: () => h(RouterLink, { to: "/learn/01" }, { default: () => "自学" }),
     key: "learn",
     icon: renderIcon("streamline-emojis:snake"),
-    show: isDesktop.value,
   },
   {
     label: () => h(RouterLink, { to: "/" }, { default: () => "题库" }),