diff --git a/changelog.d/settings-tab-width.fix.md b/changelog.d/settings-tab-width.fix.md
new file mode 100644
index 000000000..65845d209
--- /dev/null
+++ b/changelog.d/settings-tab-width.fix.md
@@ -0,0 +1,2 @@
+project: settings
+修复切换设置页“关于”标签时页面宽度不一致、标题横向移动的问题
diff --git a/frontend/src/views/setting/components/SettingsSectionLayout.vue b/frontend/src/views/setting/components/SettingsSectionLayout.vue
index 226c4a60f..b507f0294 100644
--- a/frontend/src/views/setting/components/SettingsSectionLayout.vue
+++ b/frontend/src/views/setting/components/SettingsSectionLayout.vue
@@ -92,8 +92,6 @@ async function toggleNavigation() {
       :class="{
         'settings-shell--navigation-available': navigationAvailable,
         'settings-shell--with-nav': hasNavigation,
-        'settings-shell--dual': effectiveDual,
-        'settings-shell--about': activeKey === 'others',
       }"
     >
       <div class="settings-shell-main">
@@ -168,7 +166,7 @@ async function toggleNavigation() {
 </template>
 
 <style scoped>
-/* 卡片与目录共用限宽容器，标题和页签保持同一条左边缘。 */
+/* 所有页签共用限宽容器，切换页面或目录时标题和页签保持对齐。 */
 .settings-section-layout {
   position: relative;
   display: flex;
@@ -185,20 +183,11 @@ async function toggleNavigation() {
   flex: 1;
   justify-content: center;
   width: 100%;
-  max-width: 1040px;
+  max-width: 1440px;
   min-height: 0;
   margin: 0 auto;
 }
 
-.settings-shell--navigation-available,
-.settings-shell--dual {
-  max-width: 1440px;
-}
-
-.settings-shell--about {
-  max-width: 1240px;
-}
-
 .settings-shell-main {
   display: flex;
   flex: 1;