diff --git a/app/assets/css/tailwind.css b/app/assets/css/tailwind.css
index f51bcaf..47837c1 100644
--- a/app/assets/css/tailwind.css
+++ b/app/assets/css/tailwind.css
@@ -116,13 +116,48 @@
 @layer base {
   * {
     @apply border-border outline-ring/50;
+    scrollbar-width: thin;
+    scrollbar-color: color-mix(in oklch, var(--foreground) 28%, transparent)
+      transparent;
   }
+
   body {
     @apply bg-background text-foreground;
     @apply font-sans;
   }
+
   button:not(:disabled),
   [role="button"]:not(:disabled) {
     cursor: pointer;
   }
+
+  /* Chrome / Edge / Safari */
+  *::-webkit-scrollbar {
+    width: 8px;
+    height: 8px;
+  }
+
+  *::-webkit-scrollbar-track {
+    background: transparent;
+  }
+
+  *::-webkit-scrollbar-thumb {
+    background: color-mix(in oklch, var(--foreground) 22%, transparent);
+    border-radius: 999px;
+  }
+
+  *::-webkit-scrollbar-thumb:hover {
+    background: color-mix(in oklch, var(--foreground) 38%, transparent);
+  }
+
+  /* 去掉滚动条两头的箭头按钮 */
+  *::-webkit-scrollbar-button {
+    display: none;
+    width: 0;
+    height: 0;
+  }
+
+  *::-webkit-scrollbar-corner {
+    background: transparent;
+  }
 }
diff --git a/app/components/home/OcsConfigCard.vue b/app/components/home/OcsConfigCard.vue
index 45f67f0..501a341 100644
--- a/app/components/home/OcsConfigCard.vue
+++ b/app/components/home/OcsConfigCard.vue
@@ -68,8 +68,9 @@ const copyConfig = async () => {
 
     <CardContent>
       <pre
-        class="max-h-[30rem] overflow-auto rounded-2xl bg-muted p-4 text-xs leading-5 text-muted-foreground"
-      ><code>{{ configText }}</code></pre>
+        class="max-h-120 overflow-auto rounded-2xl bg-muted p-4 text-xs leading-5 text-muted-foreground"
+      ><code>{{ configText }}</code>
+        </pre>
     </CardContent>
   </Card>
 </template>
diff --git a/app/components/layout/AppHeader.vue b/app/components/layout/AppHeader.vue
index 7b00826..abef252 100644
--- a/app/components/layout/AppHeader.vue
+++ b/app/components/layout/AppHeader.vue
@@ -1,6 +1,11 @@
 <!-- app/components/layout/AppHeader.vue - 顶部导航和页面切换入口 -->
 <script lang="ts" setup>
-import { Activity, BookOpenText, LayoutDashboard, Search } from "lucide-vue-next";
+import {
+  Activity,
+  BookOpenText,
+  LayoutDashboard,
+  Search
+} from "lucide-vue-next";
 
 import { Button } from "@/components/ui/button";
 
@@ -33,7 +38,9 @@ const isActive = (to: string) => {
 </script>
 
 <template>
-  <header class="border-b bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/80">
+  <header
+    class="border-b bg-background/95 backdrop-blur supports-backdrop-filter:bg-background/80"
+  >
     <div
       class="mx-auto flex min-h-16 w-full max-w-7xl items-center justify-between gap-4 px-4 md:px-6"
     >
diff --git a/app/components/ui/scroll-area/ScrollArea.vue b/app/components/ui/scroll-area/ScrollArea.vue
new file mode 100644
index 0000000..137028f
--- /dev/null
+++ b/app/components/ui/scroll-area/ScrollArea.vue
@@ -0,0 +1,33 @@
+<script setup lang="ts">
+import type { ScrollAreaRootProps } from 'reka-ui'
+import type { HTMLAttributes } from 'vue'
+import { reactiveOmit } from '@vueuse/core'
+import {
+  ScrollAreaCorner,
+  ScrollAreaRoot,
+  ScrollAreaViewport,
+} from 'reka-ui'
+import { cn } from '@/lib/utils'
+import ScrollBar from './ScrollBar.vue'
+
+const props = defineProps<ScrollAreaRootProps & { class?: HTMLAttributes['class'] }>()
+
+const delegatedProps = reactiveOmit(props, 'class')
+</script>
+
+<template>
+  <ScrollAreaRoot
+    data-slot="scroll-area"
+    v-bind="delegatedProps"
+    :class="cn('relative', props.class)"
+  >
+    <ScrollAreaViewport
+      data-slot="scroll-area-viewport"
+      class="size-full rounded-[inherit] transition-[color,box-shadow] outline-none focus-visible:ring-[3px] focus-visible:ring-ring/50 focus-visible:outline-1"
+    >
+      <slot />
+    </ScrollAreaViewport>
+    <ScrollBar />
+    <ScrollAreaCorner />
+  </ScrollAreaRoot>
+</template>
diff --git a/app/components/ui/scroll-area/ScrollBar.vue b/app/components/ui/scroll-area/ScrollBar.vue
new file mode 100644
index 0000000..2b7042b
--- /dev/null
+++ b/app/components/ui/scroll-area/ScrollBar.vue
@@ -0,0 +1,27 @@
+<script setup lang="ts">
+import type { ScrollAreaScrollbarProps } from 'reka-ui'
+import type { HTMLAttributes } from 'vue'
+import { reactiveOmit } from '@vueuse/core'
+import { ScrollAreaScrollbar, ScrollAreaThumb } from 'reka-ui'
+import { cn } from '@/lib/utils'
+
+const props = withDefaults(defineProps<ScrollAreaScrollbarProps & { class?: HTMLAttributes['class'] }>(), {
+  orientation: 'vertical',
+})
+
+const delegatedProps = reactiveOmit(props, 'class')
+</script>
+
+<template>
+  <ScrollAreaScrollbar
+    data-slot="scroll-area-scrollbar"
+    :data-orientation="orientation"
+    v-bind="delegatedProps"
+    :class="cn('data-horizontal:h-2.5 data-horizontal:flex-col data-horizontal:border-t data-horizontal:border-t-transparent data-vertical:h-full data-vertical:w-2.5 data-vertical:border-l data-vertical:border-l-transparent flex touch-none p-px transition-colors select-none', props.class)"
+  >
+    <ScrollAreaThumb
+      data-slot="scroll-area-thumb"
+      class="rounded-full relative flex-1 bg-border"
+    />
+  </ScrollAreaScrollbar>
+</template>
diff --git a/app/components/ui/scroll-area/index.ts b/app/components/ui/scroll-area/index.ts
new file mode 100644
index 0000000..2bd4fae
--- /dev/null
+++ b/app/components/ui/scroll-area/index.ts
@@ -0,0 +1,2 @@
+export { default as ScrollArea } from './ScrollArea.vue'
+export { default as ScrollBar } from './ScrollBar.vue'
diff --git a/app/interfaces/answer.ts b/app/interfaces/answer.ts
index b2cc06f..0510d4c 100644
--- a/app/interfaces/answer.ts
+++ b/app/interfaces/answer.ts
@@ -1,7 +1,12 @@
 // app/interfaces/answer.ts - 前端和本地 API 之间使用的响应类型
 
 /** OCS 支持的题型；空字符串表示不指定题型，交给模型根据题目判断 */
-export type QuestionType = "" | "single" | "multiple" | "judgement" | "completion";
+export type QuestionType =
+  | ""
+  | "single"
+  | "multiple"
+  | "judgement"
+  | "completion";
 
 /** 答题接口请求体，字段名保持旧 Python 服务和 OCS AnswererWrapper 兼容 */
 export interface ISearchRequest {
diff --git a/app/layouts/default.vue b/app/layouts/default.vue
index e374b52..2733810 100644
--- a/app/layouts/default.vue
+++ b/app/layouts/default.vue
@@ -5,11 +5,15 @@ import AppHeader from "@/components/layout/AppHeader.vue";
 </script>
 
 <template>
-  <div class="min-h-screen bg-background text-foreground">
-    <AppHeader />
-    <main class="mx-auto min-h-[calc(100vh-8rem)] w-full max-w-7xl px-4 py-6 md:px-6">
-      <slot />
+  <div
+    class="flex h-screen flex-col overflow-hidden bg-background text-foreground"
+  >
+    <AppHeader class="shrink-0" />
+    <main class="flex min-h-0 flex-1 flex-col overflow-y-auto">
+      <div class="mx-auto w-full max-w-7xl flex-1 px-4 py-6 md:px-6">
+        <slot />
+      </div>
+      <AppFooter />
     </main>
-    <AppFooter />
   </div>
 </template>
diff --git a/app/services/answer_service.ts b/app/services/answer_service.ts
index 8de65de..f03c13f 100644
--- a/app/services/answer_service.ts
+++ b/app/services/answer_service.ts
@@ -7,7 +7,6 @@ import type {
   ISearchResponse,
   IStatsResponse
 } from "@/interfaces";
-
 import BaseClientService from "@/services/base_service";
 
 /** 当前 Nuxt 站点内 API 的基础路径，部署到子路径时由 Nuxt 自己处理 */
diff --git a/app/stores/answer.ts b/app/stores/answer.ts
index 8b43e8f..0c92d2a 100644
--- a/app/stores/answer.ts
+++ b/app/stores/answer.ts
@@ -137,10 +137,7 @@ export const useAnswerStore = defineStore("answer", () => {
 
       searchErrorMessage.value = res.data.msg || "答题失败";
     } catch (error) {
-      searchErrorMessage.value = getClientErrorMessage(
-        error,
-        "服务器内部错误"
-      );
+      searchErrorMessage.value = getClientErrorMessage(error, "服务器内部错误");
     } finally {
       searchLoading.value = false;
     }