diff --git a/src/client/component/Archives.vue b/src/client/component/Archives.vue
index 18c1272d..a4be868b 100644
--- a/src/client/component/Archives.vue
+++ b/src/client/component/Archives.vue
@@ -1,6 +1,6 @@
 <script lang="ts" setup>
-import * as dayjs from 'dayjs'
 import { useArchivesList } from '../composables/useArchives'
+import { dayjs } from '../utils/dayjs'
 
 const archivesList = useArchivesList()
 
diff --git a/src/client/component/CategoryGroup.vue b/src/client/component/CategoryGroup.vue
index f1088924..d48688e1 100644
--- a/src/client/component/CategoryGroup.vue
+++ b/src/client/component/CategoryGroup.vue
@@ -1,8 +1,8 @@
 <script lang="ts" setup>
-import * as dayjs from 'dayjs'
 import type { Component } from 'vue'
 import { h, withDefaults } from 'vue'
 import type { CategoryItem } from '../composables'
+import { dayjs } from '../utils/dayjs'
 
 interface Props {
   category: CategoryItem
diff --git a/src/client/component/PostMeta.vue b/src/client/component/PostMeta.vue
index f2d4b3a3..2a207ead 100644
--- a/src/client/component/PostMeta.vue
+++ b/src/client/component/PostMeta.vue
@@ -1,7 +1,7 @@
 <script lang="ts" setup>
-import * as dayjs from 'dayjs'
 import { computed, withDefaults } from 'vue'
 import type { PostItemIndex } from '../../shared'
+import { dayjs } from '../utils/dayjs'
 import Icon from './Icon.vue'
 
 const props = withDefaults(
diff --git a/src/client/composables/useArchives.ts b/src/client/composables/useArchives.ts
index a3647774..213c7543 100644
--- a/src/client/composables/useArchives.ts
+++ b/src/client/composables/useArchives.ts
@@ -1,7 +1,7 @@
-import * as dayjs from 'dayjs'
 import { ref } from 'vue'
 import type { Ref } from 'vue'
 import type { PostItemIndex } from '../../shared'
+import { dayjs } from '../utils/dayjs'
 import { usePostIndex } from './usePostIndex'
 
 export interface ArchivesItem {
diff --git a/src/client/styles/code-group.css b/src/client/styles/code-group.css
index 24b37435..7471be4b 100644
--- a/src/client/styles/code-group.css
+++ b/src/client/styles/code-group.css
@@ -45,7 +45,7 @@
   border-bottom: var(--c-brand) 1px solid;
 }
 
-@media (max-width: $MQMobileNarrow) {
+@media (max-width: 419px) {
   .code-group__nav {
     margin-left: -1.5rem;
     margin-right: -1.5rem;
diff --git a/src/client/utils/dayjs.ts b/src/client/utils/dayjs.ts
new file mode 100644
index 00000000..30736bda
--- /dev/null
+++ b/src/client/utils/dayjs.ts
@@ -0,0 +1,3 @@
+import * as _dayjs from 'dayjs'
+
+export const dayjs = (_dayjs as any).default || _dayjs
diff --git a/src/client/utils/index.d.ts b/src/client/utils/index.d.ts
deleted file mode 100644
index 6715d26b..00000000
--- a/src/client/utils/index.d.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export * from './isActiveSidebarItem';
-export * from './resolveEditLink';
-export * from './resolveRepoType';
diff --git a/src/client/utils/index.js b/src/client/utils/index.js
deleted file mode 100644
index 6715d26b..00000000
--- a/src/client/utils/index.js
+++ /dev/null
@@ -1,3 +0,0 @@
-export * from './isActiveSidebarItem';
-export * from './resolveEditLink';
-export * from './resolveRepoType';