diff --git a/src/components/Login.vue b/src/components/Login.vue
index 36aada9..2142d82 100644
--- a/src/components/Login.vue
+++ b/src/components/Login.vue
@@ -31,6 +31,7 @@
               type="password"
               v-model:value="studentPassword"
               name="password"
+              @keyup.enter="submitStudent"
             />
           </n-form-item>
           <n-alert
@@ -73,6 +74,7 @@
               type="password"
               v-model:value="adminPassword"
               name="password"
+              @keyup.enter="submitAdmin"
             />
           </n-form-item>
           <n-alert
diff --git a/src/components/task/TutorialContent.vue b/src/components/task/TutorialContent.vue
index f715527..68a45b4 100644
--- a/src/components/task/TutorialContent.vue
+++ b/src/components/task/TutorialContent.vue
@@ -40,6 +40,9 @@ async function render() {
   const data = await Tutorial.get(step.value)
   taskId.value = data.task_ptr
   assetBaseUrl.value = `/media/tasks/tutorial/${step.value}/`
+  html.value = data.example_html ?? ""
+  css.value = data.example_css ?? ""
+  js.value = data.example_js ?? ""
   const merged = `# ${data.display}. ${data.title}\n${data.content}`
   content.value = await marked.parse(merged, { async: true })
 }
diff --git a/src/pages/ChallengeDetail.vue b/src/pages/ChallengeDetail.vue
index fc8f2a0..bcf2d9e 100644
--- a/src/pages/ChallengeDetail.vue
+++ b/src/pages/ChallengeDetail.vue
@@ -36,9 +36,18 @@
         <n-tab-pane name="desc" tab="挑战描述" display-directive="show">
           <div class="desc-pane">
             <div class="challenge-meta">
-              <n-text depth="3">
-                出题人：{{ challengeAuthor || "未设置" }}
-              </n-text>
+              <n-flex align="center" justify="space-between">
+                <n-text depth="3">
+                  出题人：{{ challengeAuthor || "未设置" }}
+                </n-text>
+                <n-button
+                  v-if="exampleCode"
+                  size="small"
+                  @click="previewExample"
+                >
+                  看示例
+                </n-button>
+              </n-flex>
             </div>
             <div
               class="markdown-body content no-select"
@@ -182,6 +191,7 @@ const showStats = ref(false)
 const showAssets = ref(false)
 const assets = ref<TaskAsset[]>([])
 const historyRefreshKey = ref(0)
+const exampleCode = ref<{ html: string; css: string; js: string } | null>(null)
 
 const assetBaseUrl = computed(
   () => `/media/tasks/challenge/${challengeDisplay.value}/`,
@@ -201,6 +211,15 @@ async function loadChallenge() {
   ])
   taskId.value = data.task_ptr
   challengeAuthor.value = data.author_name ?? ""
+  if (data.example_html || data.example_css || data.example_js) {
+    exampleCode.value = {
+      html: data.example_html ?? "",
+      css: data.example_css ?? "",
+      js: data.example_js ?? "",
+    }
+  } else {
+    exampleCode.value = null
+  }
   challengeContent.value = await marked.parse(data.content, {
     async: true,
     renderer: challengeRenderer,
@@ -234,6 +253,13 @@ function edit() {
   })
 }
 
+function previewExample() {
+  if (!exampleCode.value) return
+  html.value = exampleCode.value.html
+  css.value = exampleCode.value.css
+  js.value = exampleCode.value.js
+}
+
 function clearAll() {
   html.value = ""
   css.value = ""
diff --git a/src/pages/ChallengeEditor.vue b/src/pages/ChallengeEditor.vue
index 084173a..ed13eaa 100644
--- a/src/pages/ChallengeEditor.vue
+++ b/src/pages/ChallengeEditor.vue
@@ -76,11 +76,20 @@
             </n-button>
           </n-form-item>
         </n-form>
-        <TaskAssetManager
-          v-if="challenge.display"
-          task-type="challenge"
-          :display="challenge.display"
-        />
+        <n-flex>
+          <TaskAssetManager
+            v-if="challenge.display"
+            task-type="challenge"
+            :display="challenge.display"
+          />
+          <n-button
+            v-if="challenge.display"
+            size="small"
+            @click="showExampleModal = true"
+          >
+            示例代码
+          </n-button>
+        </n-flex>
         <MarkdownEditor
           style="height: calc(100vh - 100px)"
           v-model="challenge.content"
@@ -88,9 +97,28 @@
       </n-flex>
     </n-gi>
   </n-grid>
+
+  <n-modal
+    v-model:show="showExampleModal"
+    preset="card"
+    title="示例代码（点击「看示例」时显示效果）"
+    style="width: 640px"
+  >
+    <n-input
+      type="textarea"
+      v-model:value="rawCode"
+      placeholder="粘贴完整的前端代码，自动拆分为 HTML / CSS / JS..."
+      :autosize="{ minRows: 10, maxRows: 30 }"
+    />
+    <n-flex v-if="splitResult" style="margin-top: 8px">
+      <n-tag size="small" type="success">HTML · {{ splitResult.html.length }} 字符</n-tag>
+      <n-tag size="small" type="info">CSS · {{ splitResult.css.length }} 字符</n-tag>
+      <n-tag size="small" type="warning">JS · {{ splitResult.js.length }} 字符</n-tag>
+    </n-flex>
+  </n-modal>
 </template>
 <script lang="ts" setup>
-import { computed, onMounted, reactive, ref } from "vue"
+import { computed, onMounted, reactive, ref, watch } from "vue"
 import { useRoute, useRouter } from "vue-router"
 import { Icon } from "@iconify/vue"
 import { Challenge } from "../api"
@@ -105,6 +133,55 @@ const message = useMessage()
 const confirm = useDialog()
 
 const list = ref<ChallengeSlim[]>([])
+const showExampleModal = ref(false)
+const rawCode = ref("")
+const splitResult = ref<{ html: string; css: string; js: string } | null>(null)
+
+function splitHtml(raw: string) {
+  let result = raw
+  const cssBlocks: string[] = []
+  const jsBlocks: string[] = []
+  result = result.replace(/<style[^>]*>([\s\S]*?)<\/style>/gi, (_, c) => {
+    cssBlocks.push(c.trim())
+    return ""
+  })
+  result = result.replace(
+    /<script(?![^>]*\bsrc\b)[^>]*>([\s\S]*?)<\/script>/gi,
+    (_, c) => {
+      jsBlocks.push(c.trim())
+      return ""
+    },
+  )
+  return {
+    html: result.trim(),
+    css: cssBlocks.join("\n\n"),
+    js: jsBlocks.join("\n\n"),
+  }
+}
+
+watch(rawCode, (val) => {
+  if (!val.trim()) {
+    splitResult.value = null
+    challenge.example_html = null
+    challenge.example_css = null
+    challenge.example_js = null
+    return
+  }
+  const split = splitHtml(val)
+  splitResult.value = split
+  challenge.example_html = split.html || null
+  challenge.example_css = split.css || null
+  challenge.example_js = split.js || null
+})
+
+watch(showExampleModal, (visible) => {
+  if (!visible) return
+  const parts: string[] = []
+  if (challenge.example_css) parts.push(`<style>\n${challenge.example_css}\n</style>`)
+  if (challenge.example_html) parts.push(challenge.example_html)
+  if (challenge.example_js) parts.push(`<script>\n${challenge.example_js}\n<\/script>`)
+  rawCode.value = parts.join("\n\n")
+})
 const challenge = reactive({
   display: 0,
   title: "",
@@ -112,6 +189,9 @@ const challenge = reactive({
   score: 0,
   is_public: false,
   author_name: "",
+  example_html: null as string | null,
+  example_css: null as string | null,
+  example_js: null as string | null,
 })
 
 const canSubmit = computed(
@@ -135,6 +215,9 @@ function createNew() {
   challenge.score = 0
   challenge.is_public = false
   challenge.author_name = ""
+  challenge.example_html = null
+  challenge.example_css = null
+  challenge.example_js = null
 }
 
 async function submit() {
@@ -147,6 +230,9 @@ async function submit() {
     challenge.score = 0
     challenge.is_public = false
     challenge.author_name = ""
+    challenge.example_html = null
+    challenge.example_css = null
+    challenge.example_js = null
     await getContent()
   } catch (error: any) {
     message.error(error.response.data.detail)
@@ -176,6 +262,9 @@ async function show(display: number) {
   challenge.score = item.score
   challenge.is_public = item.is_public
   challenge.author_name = item.author_name ?? ""
+  challenge.example_html = item.example_html ?? null
+  challenge.example_css = item.example_css ?? null
+  challenge.example_js = item.example_js ?? null
 }
 
 async function togglePublic(display: number) {
diff --git a/src/pages/TutorialEditor.vue b/src/pages/TutorialEditor.vue
index 581b02d..d191e81 100644
--- a/src/pages/TutorialEditor.vue
+++ b/src/pages/TutorialEditor.vue
@@ -61,11 +61,20 @@
             </n-button>
           </n-form-item>
         </n-form>
-        <TaskAssetManager
-          v-if="tutorial.display"
-          task-type="tutorial"
-          :display="tutorial.display"
-        />
+        <n-flex>
+          <TaskAssetManager
+            v-if="tutorial.display"
+            task-type="tutorial"
+            :display="tutorial.display"
+          />
+          <n-button
+            v-if="tutorial.display"
+            size="small"
+            @click="showExampleModal = true"
+          >
+            示例代码
+          </n-button>
+        </n-flex>
         <MarkdownEditor
           style="height: calc(100vh - 100px)"
           v-model="tutorial.content"
@@ -73,9 +82,28 @@
       </n-flex>
     </n-gi>
   </n-grid>
+
+  <n-modal
+    v-model:show="showExampleModal"
+    preset="card"
+    title="示例代码（加载教程时自动填入编辑器）"
+    style="width: 640px"
+  >
+    <n-input
+      type="textarea"
+      v-model:value="rawCode"
+      placeholder="粘贴完整的前端代码，自动拆分为 HTML / CSS / JS..."
+      :autosize="{ minRows: 10, maxRows: 30 }"
+    />
+    <n-flex v-if="splitResult" style="margin-top: 8px">
+      <n-tag size="small" type="success">HTML · {{ splitResult.html.length }} 字符</n-tag>
+      <n-tag size="small" type="info">CSS · {{ splitResult.css.length }} 字符</n-tag>
+      <n-tag size="small" type="warning">JS · {{ splitResult.js.length }} 字符</n-tag>
+    </n-flex>
+  </n-modal>
 </template>
 <script lang="ts" setup>
-import { computed, onMounted, reactive, ref } from "vue"
+import { computed, onMounted, reactive, ref, watch } from "vue"
 import { useRoute, useRouter } from "vue-router"
 import { Icon } from "@iconify/vue"
 import { Tutorial } from "../api"
@@ -90,11 +118,63 @@ const message = useMessage()
 const confirm = useDialog()
 
 const list = ref<TutorialSlim[]>([])
+const showExampleModal = ref(false)
+const rawCode = ref("")
+const splitResult = ref<{ html: string; css: string; js: string } | null>(null)
+
+function splitHtml(raw: string) {
+  let result = raw
+  const cssBlocks: string[] = []
+  const jsBlocks: string[] = []
+  result = result.replace(/<style[^>]*>([\s\S]*?)<\/style>/gi, (_, c) => {
+    cssBlocks.push(c.trim())
+    return ""
+  })
+  result = result.replace(
+    /<script(?![^>]*\bsrc\b)[^>]*>([\s\S]*?)<\/script>/gi,
+    (_, c) => {
+      jsBlocks.push(c.trim())
+      return ""
+    },
+  )
+  return {
+    html: result.trim(),
+    css: cssBlocks.join("\n\n"),
+    js: jsBlocks.join("\n\n"),
+  }
+}
+
+watch(rawCode, (val) => {
+  if (!val.trim()) {
+    splitResult.value = null
+    tutorial.example_html = null
+    tutorial.example_css = null
+    tutorial.example_js = null
+    return
+  }
+  const split = splitHtml(val)
+  splitResult.value = split
+  tutorial.example_html = split.html || null
+  tutorial.example_css = split.css || null
+  tutorial.example_js = split.js || null
+})
+
+watch(showExampleModal, (visible) => {
+  if (!visible) return
+  const parts: string[] = []
+  if (tutorial.example_css) parts.push(`<style>\n${tutorial.example_css}\n</style>`)
+  if (tutorial.example_html) parts.push(tutorial.example_html)
+  if (tutorial.example_js) parts.push(`<script>\n${tutorial.example_js}\n<\/script>`)
+  rawCode.value = parts.join("\n\n")
+})
 const tutorial = reactive({
   display: 0,
   title: "",
   content: "",
   is_public: false,
+  example_html: null as string | null,
+  example_css: null as string | null,
+  example_js: null as string | null,
 })
 
 const canSubmit = computed(
@@ -116,6 +196,9 @@ function createNew() {
   tutorial.title = ""
   tutorial.content = ""
   tutorial.is_public = false
+  tutorial.example_html = null
+  tutorial.example_css = null
+  tutorial.example_js = null
 }
 
 async function submit() {
@@ -126,6 +209,9 @@ async function submit() {
     tutorial.title = ""
     tutorial.content = ""
     tutorial.is_public = false
+    tutorial.example_html = null
+    tutorial.example_css = null
+    tutorial.example_js = null
     await getContent()
   } catch (error: any) {
     message.error(error.response.data.detail)
@@ -153,6 +239,9 @@ async function show(display: number) {
   tutorial.title = item.title
   tutorial.content = item.content
   tutorial.is_public = item.is_public
+  tutorial.example_html = item.example_html ?? null
+  tutorial.example_css = item.example_css ?? null
+  tutorial.example_js = item.example_js ?? null
 }
 
 async function togglePublic(display: number) {
diff --git a/src/router.ts b/src/router.ts
index a767ef3..2d8764b 100644
--- a/src/router.ts
+++ b/src/router.ts
@@ -5,25 +5,28 @@ import Workspace from "./pages/Workspace.vue"
 import { STORAGE_KEY } from "./utils/const"
 
 const routes = [
-  { path: "/", name: "home", component: Workspace },
-  { path: "/tutorial", name: "home-tutorial-list", component: Workspace },
-  { path: "/tutorial/:display", name: "home-tutorial", component: Workspace },
-  { path: "/challenge", name: "home-challenge-list", component: Workspace },
+  { path: "/", name: "home", component: Workspace, meta: { auth: true } },
+  { path: "/tutorial", name: "home-tutorial-list", component: Workspace, meta: { auth: true } },
+  { path: "/tutorial/:display", name: "home-tutorial", component: Workspace, meta: { auth: true } },
+  { path: "/challenge", name: "home-challenge-list", component: Workspace, meta: { auth: true } },
   {
     path: "/challenge/:display",
     name: "home-challenge",
     component: () => import("./pages/ChallengeDetail.vue"),
+    meta: { auth: true },
   },
   {
     path: "/submissions/:page",
     name: "submissions",
     component: () => import("./pages/Submissions.vue"),
+    meta: { auth: true },
   },
   {
     path: "/submission/:id",
     name: "submission",
     component: () => import("./pages/Submission.vue"),
     props: true,
+    meta: { auth: true },
   },
   {
     path: "/showcase",
diff --git a/src/utils/type.ts b/src/utils/type.ts
index 87e2bb3..8e4b3d4 100644
--- a/src/utils/type.ts
+++ b/src/utils/type.ts
@@ -54,12 +54,18 @@ export interface TutorialSlim {
 
 export interface TutorialReturn extends TutorialSlim {
   content: string
+  example_html: string | null
+  example_css: string | null
+  example_js: string | null
 }
 
 export interface TutorialIn {
   display: number
   title: string
   content: string
+  example_html?: string | null
+  example_css?: string | null
+  example_js?: string | null
 }
 
 export interface ChallengeSlim {
@@ -72,12 +78,22 @@ export interface ChallengeSlim {
   author_name: string | null
 }
 
+export interface ChallengeReturn extends ChallengeSlim {
+  content: string
+  example_html: string | null
+  example_css: string | null
+  example_js: string | null
+}
+
 export interface ChallengeIn {
   display: number
   title: string
   content: string
   score: number
   is_public: boolean
+  example_html?: string | null
+  example_css?: string | null
+  example_js?: string | null
 }
 
 export interface User {