diff --git a/apps/web/public/noto--dog-face.ico b/apps/web/public/noto--dog-face.ico
index a49602a..2bfde1d 100644
Binary files a/apps/web/public/noto--dog-face.ico and b/apps/web/public/noto--dog-face.ico differ
diff --git a/apps/web/src/admin/ai/list.vue b/apps/web/src/admin/ai/list.vue
index d374ef8..42bfb09 100644
--- a/apps/web/src/admin/ai/list.vue
+++ b/apps/web/src/admin/ai/list.vue
@@ -3,7 +3,6 @@ import { Icon } from "@iconify/vue"
 import PageHeader from "admin/components/PageHeader.vue"
 import { useThemeVars } from "naive-ui"
 import { classLabel } from "oj/submission/utils"
-import Markdown from "shared/components/Markdown.vue"
 import { useBackClose } from "shared/composables/backClose"
 import { useBreakpoints } from "shared/composables/breakpoints"
 import Pagination from "shared/components/Pagination.vue"
@@ -12,6 +11,9 @@ import { parseTime } from "utils/functions"
 import type { AdminAiReport, AdminAiReportListItem } from "utils/types"
 import { getAIReportDetail, getAIReportList, pinAIReport } from "../api"
 
+// Markdown 连着整套代码高亮（两百多 KB），这里要等点开 / AI 写完才用得上，别让它拖慢页面
+const Markdown = defineAsyncComponent(() => import("shared/components/Markdown.vue"))
+
 /**
  * 后台 AI 报告（设计稿「智能分析重设计」AiAdmin）：左边一份一行（用户名、班级、时间、
  * 两行摘要），点哪份右边就是全文。原来是表格 + 弹框，看一份要点「查看」、关框、再点下一份。
diff --git a/apps/web/src/oj/ai/components/AiSummary.vue b/apps/web/src/oj/ai/components/AiSummary.vue
index 32b6bb6..f37cdc5 100644
--- a/apps/web/src/oj/ai/components/AiSummary.vue
+++ b/apps/web/src/oj/ai/components/AiSummary.vue
@@ -2,11 +2,13 @@
 import type { LearningPeriod } from "@oj2/contract"
 import { Icon } from "@iconify/vue"
 import { useThemeVars } from "naive-ui"
-import Markdown from "shared/components/Markdown.vue"
 import { parseTime } from "utils/functions"
 import { streamAI } from "utils/stream"
 import { getLatestAnalysis } from "../../api"
 
+// Markdown 连着整套代码高亮（两百多 KB），这里要等点开 / AI 写完才用得上，别让它拖慢页面
+const Markdown = defineAsyncComponent(() => import("shared/components/Markdown.vue"))
+
 /**
  * AI 小结。进来先拿这个时间段上次生成的那份（老师钉住的优先），没有才出按钮 ——
  * 一份小结要等十几秒、也要花钱，不在进页面时自动生成。
diff --git a/apps/web/src/oj/class/pk.vue b/apps/web/src/oj/class/pk.vue
index c46e430..7172064 100644
--- a/apps/web/src/oj/class/pk.vue
+++ b/apps/web/src/oj/class/pk.vue
@@ -1,6 +1,5 @@
 <script setup lang="ts">
 import type { ClassBattleItem, ClassPk, ClassPkPeriod } from "@oj2/contract"
-import Markdown from "shared/components/Markdown.vue"
 import { useThemeVars } from "naive-ui"
 import { getClassBattle, getClassPk } from "oj/api"
 import { classLabel, groupClassOptions } from "oj/submission/utils"
@@ -12,6 +11,9 @@ import PkGrid from "./components/PkGrid.vue"
 import PkRace from "./components/PkRace.vue"
 import { pkColor } from "./utils"
 
+// Markdown 连着整套代码高亮（两百多 KB），这里要等点开 / AI 写完才用得上，别让它拖慢页面
+const Markdown = defineAsyncComponent(() => import("shared/components/Markdown.vue"))
+
 /**
  * 班级 PK（设计稿「班级 PK 重设计」定稿）。用户定的：两个班按「同一批题」对决（B），
  * 三个班以上按题对照（C），学生也能看。原来的综合分、雷达图、十张柱状图、四分位数都去掉了。
diff --git a/apps/web/src/oj/classroom/components/ProblemBrief.vue b/apps/web/src/oj/classroom/components/ProblemBrief.vue
index eaca0a6..f4b6d35 100644
--- a/apps/web/src/oj/classroom/components/ProblemBrief.vue
+++ b/apps/web/src/oj/classroom/components/ProblemBrief.vue
@@ -1,10 +1,12 @@
 <script setup lang="ts">
 import { isSqlProblem } from "@oj2/contract"
 import { getProblem } from "oj/api"
-import Markdown from "shared/components/Markdown.vue"
 import { errorMessage } from "utils/api"
 import type { ProblemDetail } from "utils/types"
 
+// Markdown 连着整套代码高亮（两百多 KB），这里要等点开 / AI 写完才用得上，别让它拖慢页面
+const Markdown = defineAsyncComponent(() => import("shared/components/Markdown.vue"))
+
 /**
  * 「讲错误」弹层左边的题目（用户要的：演示学生的错误时题目和代码要并排）。
  * 只摆讲题用得上的：描述、输入、输出、例子 —— 题目页的状态标签、流程图、相似题都不要。
diff --git a/apps/web/src/oj/rank/components/ClassDetailDrawer.vue b/apps/web/src/oj/rank/components/ClassDetailDrawer.vue
index d002cee..42b623f 100644
--- a/apps/web/src/oj/rank/components/ClassDetailDrawer.vue
+++ b/apps/web/src/oj/rank/components/ClassDetailDrawer.vue
@@ -1,6 +1,5 @@
 <script setup lang="ts">
 import type { ClassDetail } from "@oj2/contract"
-import Markdown from "shared/components/Markdown.vue"
 import { useThemeVars } from "naive-ui"
 import { getClassDetail } from "oj/api"
 import { classLabel } from "oj/submission/utils"
@@ -12,6 +11,9 @@ import { parseTime } from "utils/functions"
 import { useRankPalette } from "../palette"
 import RankAvatar from "./RankAvatar.vue"
 
+// Markdown 连着整套代码高亮（两百多 KB），这里要等点开 / AI 写完才用得上，别让它拖慢页面
+const Markdown = defineAsyncComponent(() => import("shared/components/Markdown.vue"))
+
 /**
  * 班级详情（设计稿「班级详情 · 老师 / 学生」）：从右边滑出的抽屉，代替原来那个满是
  * 四分位数、标准差、综合分的弹框。谁都能看；「要多关心的同学」和 AI 分析只给老师，