diff --git a/src/components.d.ts b/src/components.d.ts
index dfd6712..7aeb439 100644
--- a/src/components.d.ts
+++ b/src/components.d.ts
@@ -9,6 +9,7 @@ export {}
 
 declare module '@vue/runtime-core' {
   export interface GlobalComponents {
+    IEpArrowRightBold: typeof import('~icons/ep/arrow-right-bold')['default']
     IEpBell: typeof import('~icons/ep/bell')['default']
     IEpCaretRight: typeof import('~icons/ep/caret-right')['default']
     IEpLoading: typeof import('~icons/ep/loading')['default']
diff --git a/src/learn/index.vue b/src/learn/index.vue
index c9cc587..532a7d8 100644
--- a/src/learn/index.vue
+++ b/src/learn/index.vue
@@ -1,23 +1,17 @@
 <script setup lang="ts">
 import { isDesktop } from "~/shared/composables/breakpoints"
 import { code } from "~/shared/composables/learn"
+import { useLearnStore } from "./store"
 
 const CodeEditor = defineAsyncComponent(() => import("~/shared/CodeEditor.vue"))
 
 const route = useRoute()
 const router = useRouter()
+const learnStore = useLearnStore()
 
-const TOTAL = 3
-
-const Mds = Array.from({ length: TOTAL }, (_, i) => i + 1).map((v) =>
+const Mds = Array.from({ length: learnStore.total }, (_, i) => i + 1).map((v) =>
   defineAsyncComponent(() => import(`./step-${v}/index.md`))
 )
-const step = computed(() => {
-  if (!route.params.step || !route.params.step.length) return 1
-  else {
-    return parseInt(route.params.step[0].split("-")[1])
-  }
-})
 
 watch(
   () => route.params.step,
@@ -32,45 +26,38 @@ watch(
   },
   { immediate: true }
 )
-
-function prev() {
-  router.push(`/learn/step-${step.value - 1}`)
-}
-function next() {
-  router.push(`/learn/step-${step.value + 1}`)
-}
 </script>
 
 <template>
-  <n-grid v-if="isDesktop" :cols="24">
-    <n-gi :span="10">
+  <n-grid v-if="isDesktop" :cols="22">
+    <n-gi :span="2">
       <n-scrollbar style="max-height: calc(100vh - 92px)">
-        <component :is="Mds[step - 1]"></component>
-        <n-space justify="space-around">
-          <n-button v-if="step !== 1" text type="primary" @click="prev">
-            上一步
-          </n-button>
-          <n-button v-if="step !== TOTAL" text type="primary" @click="next">
-            下一步
+        <n-space vertical>
+          <span>目录</span>
+          <n-button
+            text
+            :type="learnStore.current === title.key ? 'primary' : 'default'"
+            v-for="title in learnStore.menu"
+            :key="title.key"
+            @click="title.props?.onClick"
+          >
+            {{ title.label }}
           </n-button>
         </n-space>
       </n-scrollbar>
     </n-gi>
-    <n-gi :span="14">
-      <CodeEditor v-model="code" />
+    <n-gi :span="10">
+      <n-scrollbar style="max-height: calc(100vh - 92px)">
+        <component :is="Mds[learnStore.current - 1]"></component>
+      </n-scrollbar>
+    </n-gi>
+    <n-gi :span="10">
+      <CodeEditor v-model="code" height="calc(100vh - 92px)" />
     </n-gi>
   </n-grid>
   <div v-else>
     <n-scrollbar style="height: calc(50vh - 42px)">
-      <component :is="Mds[step - 1]"></component>
-      <n-space justify="space-around">
-        <n-button v-if="step !== 1" text type="primary" @click="prev">
-          上一步
-        </n-button>
-        <n-button v-if="step !== TOTAL" text type="primary" @click="next">
-          下一步
-        </n-button>
-      </n-space>
+      <component :is="Mds[learnStore.current - 1]"></component>
     </n-scrollbar>
     <CodeEditor v-model="code" height="calc(50vh - 42px)" />
   </div>
diff --git a/src/learn/menu.md b/src/learn/menu.md
new file mode 100644
index 0000000..5239dc7
--- /dev/null
+++ b/src/learn/menu.md
@@ -0,0 +1,24 @@
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
+我是第一步
+我是第二步
+我是第三步
diff --git a/src/learn/store.ts b/src/learn/store.ts
new file mode 100644
index 0000000..bcfdb36
--- /dev/null
+++ b/src/learn/store.ts
@@ -0,0 +1,39 @@
+import sidebar from "./menu.md?raw"
+
+export const useLearnStore = defineStore("learn", () => {
+  const route = useRoute()
+  const router = useRouter()
+
+  const current = computed(() => {
+    if (!route.params.step || !route.params.step.length) return 1
+    else {
+      return parseInt(route.params.step[0].split("-")[1])
+    }
+  })
+
+  const menu: DropdownOption[] = sidebar
+    .split("\n")
+    .filter((title) => !!title)
+    .map((title: string, index) => {
+      return {
+        key: index + 1,
+        label: title,
+        props: {
+          onClick: () => {
+            router.push(`/learn/step-${index + 1}`)
+          },
+        },
+      }
+    })
+
+  function go(step: number) {
+    router.push(`/learn/step-${step}`)
+  }
+
+  return {
+    total: menu.length,
+    current,
+    menu,
+    go,
+  }
+})
diff --git a/src/shared/Header.vue b/src/shared/Header.vue
index ea79c4f..71b8787 100644
--- a/src/shared/Header.vue
+++ b/src/shared/Header.vue
@@ -7,9 +7,11 @@ import { toggleLogin, toggleSignup } from "~/shared/composables/modal"
 import { RouterLink } from "vue-router"
 import { isDesktop, isMobile } from "~/shared/composables/breakpoints"
 import { code } from "~/shared/composables/learn"
+import { useLearnStore } from "~/learn/store"
 
 const userStore = useUserStore()
 const configStore = useConfigStore()
+const learnStore = useLearnStore()
 const route = useRoute()
 const router = useRouter()
 const active = computed(() => {
@@ -96,7 +98,7 @@ function goHome() {
 <template>
   <n-space justify="space-between" align="center">
     <n-space align="center">
-      <div class="websiteTitle" @click="goHome">
+      <div v-if="isDesktop" class="websiteTitle" @click="goHome">
         {{ configStore.config?.website_name }}
       </div>
       <n-menu
@@ -107,9 +109,23 @@ function goHome() {
       />
     </n-space>
     <n-space align="center">
-      <n-button v-if="$route.name === 'learn'" type="primary" @click="run">
-        运行
-      </n-button>
+      <n-dropdown
+        v-if="$route.name === 'learn' && isMobile"
+        trigger="click"
+        :options="learnStore.menu"
+      >
+        <n-button>目录</n-button>
+      </n-dropdown>
+      <div v-if="$route.name === 'learn'">
+        <n-button v-if="isDesktop" type="primary" @click="run">
+          运行代码
+        </n-button>
+        <n-button v-else circle @click="run">
+          <n-icon>
+            <i-ep-arrow-right-bold />
+          </n-icon>
+        </n-button>
+      </div>
       <n-dropdown v-if="isMobile" :options="menus" trigger="click">
         <n-button>菜单</n-button>
       </n-dropdown>
diff --git a/src/utils/functions.ts b/src/utils/functions.ts
index 37a1a6b..d3878a6 100644
--- a/src/utils/functions.ts
+++ b/src/utils/functions.ts
@@ -17,13 +17,6 @@ export function filterEmptyValue(object: any) {
   return query
 }
 
-export function buildProblemCodeKey(problemID: string, contestID = "") {
-  if (contestID) {
-    return `${STORAGE_KEY.PROBLEM_CODE}_${contestID}_${problemID}`
-  }
-  return `${STORAGE_KEY.PROBLEM_CODE}_NaN_${problemID}`
-}
-
 export function getTagColor(
   tag: "Low" | "Mid" | "High" | "简单" | "中等" | "困难"
 ) {
diff --git a/vite.config.ts b/vite.config.ts
index 5e453fd..13c6a8e 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -38,8 +38,6 @@ export default defineConfig({
           ],
           "codemirror-lang": [
             "@codemirror/lang-cpp",
-            "@codemirror/lang-javascript",
-            "@codemirror/lang-java",
             "@codemirror/lang-python",
           ],
         },