diff --git a/src/components/common/DataPagination.vue b/src/components/common/DataPagination.vue
index 283aa18..2c66ce6 100644
--- a/src/components/common/DataPagination.vue
+++ b/src/components/common/DataPagination.vue
@@ -97,7 +97,7 @@ interface Props {
 }
 
 const props = withDefaults(defineProps<Props>(), {
-  pageSizeOptions: () => [10, 20, 50, 100]
+  pageSizeOptions: () => [5, 10, 20, 50, 100]
 })
 
 defineEmits<{
diff --git a/src/composables/useAdminFiles.ts b/src/composables/useAdminFiles.ts
index 5719e13..8b6cdb9 100644
--- a/src/composables/useAdminFiles.ts
+++ b/src/composables/useAdminFiles.ts
@@ -81,6 +81,8 @@ const legacyForeverExpiresAt = '2099-12-31T23:59'
 const detailPolicyDownloadLimit = 5
 const hourInMilliseconds = 60 * 60 * 1000
 const dayInMilliseconds = 24 * 60 * 60 * 1000
+const adminPageSizeOptions = [5, 10, 20, 50, 100] as const
+const defaultAdminPageSize = 10
 
 type DetailPolicyActionOption = {
   action: AdminFilePolicyAction
@@ -167,8 +169,10 @@ const normalizePresetChoice = <T extends string>(
 
 const normalizePresetSize = (value: unknown) => {
   const normalizedSize = Number(value)
-  if (!Number.isFinite(normalizedSize)) return 10
-  return Math.min(Math.max(Math.trunc(normalizedSize), 1), 100)
+  const pageSize = Number.isFinite(normalizedSize) ? Math.trunc(normalizedSize) : defaultAdminPageSize
+  return adminPageSizeOptions.includes(pageSize as (typeof adminPageSizeOptions)[number])
+    ? pageSize
+    : defaultAdminPageSize
 }
 
 const buildDefaultViewPresetParams = (): AdminFileViewPresetParams => ({
@@ -178,7 +182,7 @@ const buildDefaultViewPresetParams = (): AdminFileViewPresetParams => ({
   health: 'all',
   sortBy: 'created_at',
   sortOrder: 'desc',
-  size: 10
+  size: defaultAdminPageSize
 })
 
 const normalizeViewPresetParams = (params: unknown): AdminFileViewPresetParams => {
@@ -218,7 +222,7 @@ export function useAdminFiles() {
   const summary = ref<AdminFileSummary>(emptySummary())
   const params = ref<AdminFileListParams & { total: number }>({
     page: 1,
-    size: 10,
+    size: defaultAdminPageSize,
     total: 0,
     keyword: '',
     status: 'all',
@@ -311,7 +315,7 @@ export function useAdminFiles() {
     health: params.value.health || 'all',
     sortBy: params.value.sortBy || 'created_at',
     sortOrder: params.value.sortOrder || 'desc',
-    size: params.value.size || 10
+    size: params.value.size || defaultAdminPageSize
   })
 
   const buildBuiltInViewPreset = (
@@ -1204,8 +1208,7 @@ export function useAdminFiles() {
   }
 
   const handlePageSizeChange = async (size: number) => {
-    if (!Number.isFinite(size) || size < 1) return
-    params.value.size = Math.min(Math.trunc(size), 100)
+    params.value.size = normalizePresetSize(size)
     params.value.page = 1
     markViewPresetDirty()
     await loadFiles()
diff --git a/src/layout/AdminLayout/AdminLayout.vue b/src/layout/AdminLayout/AdminLayout.vue
index 1a0f018..162c808 100644
--- a/src/layout/AdminLayout/AdminLayout.vue
+++ b/src/layout/AdminLayout/AdminLayout.vue
@@ -89,10 +89,10 @@
     <div class="flex h-full min-h-0 min-w-0 flex-1 flex-col">
       <!-- Header -->
       <header
-        class="shadow-md border-b transition-colors duration-300 h-16"
+        class="h-14 border-b shadow-md transition-colors duration-300 lg:hidden"
         :class="[isDarkMode ? 'bg-[#1a2930] border-[#31454d]' : 'bg-[#f2f6f5] border-[#c8d7da]']"
       >
-        <div class="flex items-center justify-between h-16 px-4">
+        <div class="flex h-14 items-center justify-between px-4">
           <button @click="toggleSidebar" class="lg:hidden">
             <MenuIcon class="w-6 h-6" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']" />
           </button>
diff --git a/src/views/manage/FileManageView.vue b/src/views/manage/FileManageView.vue
index 0ae8230..a8d7b21 100644
--- a/src/views/manage/FileManageView.vue
+++ b/src/views/manage/FileManageView.vue
@@ -707,7 +707,7 @@
         :current-page="historyPage"
         :page-size="historyPageSize"
         :total="historyRows.length"
-        :page-size-options="[5, 10, 20, 50]"
+        :page-size-options="[5, 10, 20, 50, 100]"
         @page-change="historyPage = $event"
         @page-size-change="handleHistoryPageSizeChange"
       />
diff --git a/src/views/manage/SystemSettingsView.vue b/src/views/manage/SystemSettingsView.vue
index 2b64fd7..acc8f6f 100644
--- a/src/views/manage/SystemSettingsView.vue
+++ b/src/views/manage/SystemSettingsView.vue
@@ -31,59 +31,50 @@ onMounted(() => {
 <template>
   <div class="p-6">
     <div
-      class="sticky top-0 z-20 -mx-6 -mt-6 mb-6 border-b px-6 py-4 backdrop-blur"
-      :class="[isDarkMode ? 'border-gray-700 bg-gray-900/85' : 'border-gray-200 bg-gray-50/90']"
+      class="mb-6 flex flex-col gap-3 lg:flex-row lg:items-end lg:justify-between"
     >
-      <div class="flex flex-col gap-4 lg:flex-row lg:items-center lg:justify-between">
-        <div>
-          <h2 class="text-2xl font-bold" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
-            {{ t('admin.settings.title') }}
-          </h2>
-          <p
-            class="mt-1 text-sm"
-            :class="[isDirty ? 'text-amber-500' : isDarkMode ? 'text-gray-400' : 'text-gray-500']"
-          >
-            {{
-              isDirty ? t('manage.settings.unsavedChanges') : t('manage.settings.allChangesSaved')
-            }}
-          </p>
-        </div>
+      <div>
+        <h2 class="text-2xl font-bold" :class="[isDarkMode ? 'text-white' : 'text-[#2d4650]']">
+          {{ t('admin.settings.title') }}
+        </h2>
+        <p
+          class="mt-1 text-sm"
+          :class="[isDirty ? 'text-amber-500' : isDarkMode ? 'text-gray-400' : 'text-[#586f75]']"
+        >
+          {{ isDirty ? t('manage.settings.unsavedChanges') : t('manage.settings.allChangesSaved') }}
+        </p>
+      </div>
 
-        <div class="flex flex-wrap items-center gap-3">
-          <BaseButton
-            variant="secondary"
-            :loading="isRefreshing"
-            :disabled="isSaving || isDirty"
-            :title="
-              isDirty ? t('manage.settings.refreshBlocked') : t('manage.settings.refreshConfig')
-            "
-            @click="refreshConfig"
-          >
-            <template #icon>
-              <RefreshCwIcon class="mr-2 h-4 w-4" />
-            </template>
-            {{
-              isRefreshing ? t('manage.settings.refreshing') : t('manage.settings.refreshConfig')
-            }}
-          </BaseButton>
+      <div class="flex flex-wrap items-center gap-2">
+        <BaseButton
+          variant="secondary"
+          :loading="isRefreshing"
+          :disabled="isSaving || isDirty"
+          :title="isDirty ? t('manage.settings.refreshBlocked') : t('manage.settings.refreshConfig')"
+          @click="refreshConfig"
+        >
+          <template #icon>
+            <RefreshCwIcon class="mr-2 h-4 w-4" />
+          </template>
+          {{ isRefreshing ? t('manage.settings.refreshing') : t('manage.settings.refreshConfig') }}
+        </BaseButton>
 
-          <BaseButton
-            :loading="isSaving"
-            :disabled="!isDirty || isRefreshing"
-            @click="submitConfig"
-          >
-            <template #icon>
-              <SaveIcon class="mr-2 h-4 w-4" />
-            </template>
-            {{ isSaving ? t('manage.settings.saving') : t('manage.settings.saveChanges') }}
-          </BaseButton>
-        </div>
+        <BaseButton :loading="isSaving" :disabled="!isDirty || isRefreshing" @click="submitConfig">
+          <template #icon>
+            <SaveIcon class="mr-2 h-4 w-4" />
+          </template>
+          {{ isSaving ? t('manage.settings.saving') : t('manage.settings.saveChanges') }}
+        </BaseButton>
       </div>
     </div>
 
     <div
-      class="space-y-6 rounded-lg shadow-md p-6"
-      :class="[isDarkMode ? 'bg-gray-800 bg-opacity-70' : 'bg-white']"
+      class="theme-2026-card theme-2026-card-hover space-y-8 rounded-[30px] border p-6 shadow-md transition-all duration-200 hover:-translate-y-0.5 hover:shadow-lg"
+      :class="[
+        isDarkMode
+          ? 'border-[#40545c] bg-[#202f36]/90 hover:border-[#7199a8] hover:bg-[#263941] hover:shadow-black/25'
+          : 'border-[#d7e3e5] bg-[#f8fbfb] hover:border-[#8fb2bf] hover:shadow-[#a9bdc2]/70'
+      ]"
     >
       <!-- 基本设置 -->
       <section class="space-y-4">
@@ -714,4 +705,10 @@ onMounted(() => {
     </div>
   </div>
 </template>
-<style scoped></style>
+<style scoped>
+:deep(input:not([type='checkbox'])),
+:deep(select),
+:deep(textarea) {
+  border-radius: 30px;
+}
+</style>