diff --git a/index.html b/index.html
index fcbd449..5bf309c 100644
--- a/index.html
+++ b/index.html
@@ -5,7 +5,7 @@
   <link rel="icon" href="/assets/logo_small.png" />
   <meta
     name="viewport"
-    content="width=device-width, initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"
+    content="width=device-width, initial-scale=1.0"
   />
   <meta name="description" content="{{description}}" />
   <meta name="keywords" content="{{keywords}}" />
diff --git a/src/App.vue b/src/App.vue
index 8ef2c54..3eb1071 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -21,7 +21,7 @@ const {
       <LanguageSwitcher />
       <ThemeToggle v-model="isDarkMode" />
     </div>
-    <div v-if="isLoading" class="loading-overlay">
+    <div v-if="isLoading" class="loading-overlay" role="status" aria-live="polite" aria-label="Loading">
       <div class="loading-spinner"></div>
     </div>
     <RouterView v-slot="{ Component }">
@@ -36,7 +36,7 @@ const {
 
 <style>
 .app-container {
-  min-height: 100vh;
+  min-height: 100dvh;
   width: 100%;
   transition: background-color 0.5s ease;
 }
diff --git a/src/assets/style/main.css b/src/assets/style/main.css
index 648ad57..ccb3d43 100644
--- a/src/assets/style/main.css
+++ b/src/assets/style/main.css
@@ -17,6 +17,11 @@ html {
   -webkit-font-smoothing: antialiased;
 }
 
+:focus-visible {
+  outline: 3px solid rgba(95, 135, 150, 0.78);
+  outline-offset: 3px;
+}
+
 button,
 input,
 select,
@@ -32,6 +37,17 @@ textarea {
   color-scheme: dark;
 }
 
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    scroll-behavior: auto !important;
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+}
+
 .native-date-input::-webkit-calendar-picker-indicator {
   cursor: pointer;
   min-height: 2.75rem;
diff --git a/src/components/common/AlertComponent.vue b/src/components/common/AlertComponent.vue
index f677275..be56e24 100644
--- a/src/components/common/AlertComponent.vue
+++ b/src/components/common/AlertComponent.vue
@@ -7,6 +7,8 @@
     <div
       v-for="alert in alerts"
       :key="alert.id"
+      :role="alert.type === 'error' ? 'alert' : 'status'"
+      :aria-live="alert.type === 'error' ? 'assertive' : 'polite'"
       :class="[
         'w-full rounded-[30px] shadow-xl overflow-hidden',
         'bg-gradient-to-r',
@@ -23,8 +25,9 @@
           </div>
           <div class="ml-4 flex-shrink-0 flex">
             <button
+              type="button"
               @click="removeAlert(alert.id)"
-              class="inline-flex text-white hover:text-gray-200 focus:outline-none transition-colors duration-200"
+              class="inline-flex h-11 w-11 items-center justify-center rounded-lg text-white transition-colors duration-200 hover:bg-white/10 hover:text-gray-100 focus:outline-none focus:ring-2 focus:ring-white"
             >
               <span class="sr-only">{{ t('common.close') }}</span>
               <X class="h-5 w-5" />
diff --git a/src/components/common/BaseModal.vue b/src/components/common/BaseModal.vue
index 701e0fe..ea538d9 100644
--- a/src/components/common/BaseModal.vue
+++ b/src/components/common/BaseModal.vue
@@ -6,24 +6,20 @@
         class="fixed inset-0 z-50 overflow-y-auto"
         @click="handleBackdropClick"
       >
-        <!-- 背景遮罩 -->
-        <div
-          class="fixed inset-0 bg-black bg-opacity-50 transition-opacity"
-          @click.stop="handleBackdropClick"
-        ></div>
-        
-        <!-- 模态框容器 -->
+        <div class="fixed inset-0 bg-black/50 transition-opacity" aria-hidden="true"></div>
+
         <div class="flex min-h-full items-center justify-center p-4">
           <div
             ref="modalRef"
-            class="relative flex max-h-[calc(100vh-2rem)] transform flex-col overflow-hidden rounded-[30px] shadow-xl transition-all"
-            :class="[
-              sizeClasses,
-              isDarkMode ? 'bg-gray-800' : 'bg-white'
-            ]"
+            role="dialog"
+            aria-modal="true"
+            :aria-label="title || t('common.dialog')"
+            tabindex="-1"
+            class="relative flex max-h-[calc(100dvh-2rem)] transform flex-col overflow-hidden rounded-[24px] shadow-xl transition-all sm:rounded-[30px]"
+            :class="[sizeClasses, isDarkMode ? 'bg-gray-800' : 'bg-white']"
             @click.stop
+            @keydown="handleKeydown"
           >
-            <!-- 头部 -->
             <div
               v-if="$slots.header || title"
               class="flex shrink-0 items-center justify-between border-b px-4 py-3 sm:px-6 sm:py-4"
@@ -36,27 +32,28 @@
               </slot>
               <button
                 v-if="closable"
-                @click="$emit('close')"
+                type="button"
                 class="flex h-11 w-11 shrink-0 items-center justify-center rounded-lg transition-colors"
                 :class="[
                   isDarkMode
-                    ? 'text-gray-400 hover:text-gray-300 hover:bg-gray-700'
-                    : 'text-gray-400 hover:text-gray-500 hover:bg-gray-100'
+                    ? 'text-gray-300 hover:bg-gray-700 hover:text-white'
+                    : 'text-gray-600 hover:bg-gray-100 hover:text-gray-800'
                 ]"
+                :aria-label="t('common.close')"
+                :title="t('common.close')"
+                @click="emit('close')"
               >
-                <X class="h-5 w-5" />
+                <X class="h-5 w-5" aria-hidden="true" />
               </button>
             </div>
-            
-            <!-- 内容 -->
-            <div class="min-h-0 flex-1 overflow-y-auto px-4 py-4 sm:px-6">
+
+            <div class="min-h-0 flex-1 overflow-y-auto px-4 py-4 sm:px-6" tabindex="0">
               <slot></slot>
             </div>
-            
-            <!-- 底部 -->
+
             <div
               v-if="$slots.footer"
-              class="flex shrink-0 items-center justify-end space-x-3 border-t px-4 py-3 sm:px-6 sm:py-4"
+              class="flex shrink-0 flex-wrap items-center justify-end gap-2 border-t px-4 py-3 sm:px-6 sm:py-4"
               :class="[isDarkMode ? 'border-gray-700 bg-gray-900/50' : 'border-gray-200 bg-gray-50']"
             >
               <slot name="footer"></slot>
@@ -69,8 +66,9 @@
 </template>
 
 <script setup lang="ts">
-import { computed, inject, ref } from 'vue'
+import { computed, inject, nextTick, ref, watch } from 'vue'
 import { X } from 'lucide-vue-next'
+import { useI18n } from 'vue-i18n'
 
 interface Props {
   show: boolean
@@ -86,48 +84,91 @@ const props = withDefaults(defineProps<Props>(), {
   closeOnBackdrop: true
 })
 
-const emit = defineEmits<{
-  close: []
-}>()
-
+const emit = defineEmits<{ close: [] }>()
+const { t } = useI18n()
 const isDarkMode = inject('isDarkMode')
 const modalRef = ref<HTMLElement>()
+let returnFocusElement: HTMLElement | null = null
 
-const sizeClasses = computed(() => {
-  const sizes = {
-    sm: 'max-w-md w-full',
-    md: 'max-w-lg w-full',
-    lg: 'max-w-2xl w-full',
-    xl: 'max-w-4xl w-full'
-  }
-  return sizes[props.size]
-})
+const sizeClasses = computed(() => ({
+  sm: 'max-w-md w-full',
+  md: 'max-w-lg w-full',
+  lg: 'max-w-2xl w-full',
+  xl: 'max-w-4xl w-full'
+})[props.size])
+
+const focusableSelector =
+  'button:not([disabled]), [href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])'
 
 const handleBackdropClick = () => {
-  if (props.closeOnBackdrop) {
+  if (props.closeOnBackdrop) emit('close')
+}
+
+const handleKeydown = (event: KeyboardEvent) => {
+  if (event.key === 'Escape' && props.closable) {
+    event.preventDefault()
     emit('close')
+    return
+  }
+  if (event.key !== 'Tab' || !modalRef.value) return
+  const focusable = [...modalRef.value.querySelectorAll<HTMLElement>(focusableSelector)]
+  if (!focusable.length) {
+    event.preventDefault()
+    modalRef.value.focus()
+    return
+  }
+  const first = focusable[0]
+  const last = focusable[focusable.length - 1]
+  if (event.shiftKey && document.activeElement === first) {
+    event.preventDefault()
+    last.focus()
+  } else if (!event.shiftKey && document.activeElement === last) {
+    event.preventDefault()
+    first.focus()
   }
 }
+
+watch(
+  () => props.show,
+  async (show) => {
+    if (show) {
+      returnFocusElement = document.activeElement instanceof HTMLElement ? document.activeElement : null
+      await nextTick()
+      const first = modalRef.value?.querySelector<HTMLElement>(focusableSelector)
+      ;(first || modalRef.value)?.focus()
+    } else {
+      await nextTick()
+      returnFocusElement?.focus()
+      returnFocusElement = null
+    }
+  }
+)
 </script>
 
 <style scoped>
 .modal-enter-active,
 .modal-leave-active {
-  transition: opacity 0.3s ease;
+  transition: opacity 0.24s ease;
 }
-
 .modal-enter-active .relative,
 .modal-leave-active .relative {
-  transition: all 0.3s ease;
+  transition: transform 0.24s ease, opacity 0.24s ease;
 }
-
 .modal-enter-from,
 .modal-leave-to {
   opacity: 0;
 }
-
 .modal-enter-from .relative,
 .modal-leave-to .relative {
-  transform: scale(0.95) translateY(-20px);
+  opacity: 0;
+  transform: scale(0.97) translateY(-10px);
+}
+@media (prefers-reduced-motion: reduce) {
+  .modal-enter-active,
+  .modal-leave-active,
+  .modal-enter-active .relative,
+  .modal-leave-active .relative {
+    transition-duration: 0.01ms;
+  }
 }
 </style>
diff --git a/src/components/common/DataPagination.vue b/src/components/common/DataPagination.vue
index 2c66ce6..f039869 100644
--- a/src/components/common/DataPagination.vue
+++ b/src/components/common/DataPagination.vue
@@ -1,53 +1,46 @@
 <template>
   <div
-    class="mt-4 flex flex-col gap-3 border-t px-6 py-4 sm:flex-row sm:items-center sm:justify-between"
+    class="mt-4 flex flex-col gap-3 border-t px-4 py-4 sm:flex-row sm:items-center sm:justify-between sm:px-6"
     :class="[isDarkMode ? 'border-[#31454d]' : 'border-[#c8d7da]']"
   >
-    <div
-      class="flex items-center text-sm"
-      :class="[isDarkMode ? 'text-gray-400' : 'text-gray-500']"
-    >
-      显示第 {{ (currentPage - 1) * pageSize + 1 }} 到
-      {{ Math.min(currentPage * pageSize, total) }} 条，共 {{ total }} 条
+    <div class="text-sm" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-600']">
+      {{ t('components.pagination.range', { start: rangeStart, end: rangeEnd, total }) }}
     </div>
 
     <div class="flex flex-wrap items-center gap-2">
       <select
         :value="pageSize"
-        class="h-9 rounded-[30px] border px-3 text-sm shadow-sm transition-colors"
+        class="min-h-11 rounded-[30px] border px-3 text-sm shadow-sm transition-colors sm:min-h-9"
         :class="[
           isDarkMode
             ? 'border-[#40545c] bg-[#263941] text-[#d8e3e5] hover:border-[#7199a8]'
             : 'border-[#c8d8dc] bg-[#edf4f5] text-[#415d66] hover:border-[#9db6bd]'
         ]"
+        :aria-label="t('components.pagination.pageSize')"
         @change="$emit('page-size-change', Number(($event.target as HTMLSelectElement).value))"
       >
-        <option v-for="size in pageSizeOptions" :key="size" :value="size">{{ size }}/页</option>
+        <option v-for="size in pageSizeOptions" :key="size" :value="size">
+          {{ t('components.pagination.perPage', { size }) }}
+        </option>
       </select>
+
       <button
-        @click="$emit('page-change', currentPage - 1)"
+        type="button"
         :disabled="currentPage === 1"
-        class="inline-flex items-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md"
-        :class="[
-          isDarkMode
-            ? currentPage === 1
-              ? 'cursor-not-allowed bg-[#223039] text-[#657a80]'
-              : 'bg-[#263941] text-[#d8e3e5] hover:bg-[#2d4751]'
-            : currentPage === 1
-              ? 'cursor-not-allowed bg-[#e8eeee] text-[#9aa9ad]'
-              : 'bg-[#edf4f5] text-[#415d66] hover:bg-[#e2ecee]'
-        ]"
+        class="inline-flex min-h-11 items-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md sm:min-h-9"
+        :class="buttonClass(currentPage === 1)"
+        @click="$emit('page-change', currentPage - 1)"
       >
-        <ChevronLeftIcon class="w-4 h-4" />
-        上一页
+        <ChevronLeftIcon class="h-4 w-4" aria-hidden="true" />
+        {{ t('common.previous') }}
       </button>
 
-      <div class="flex items-center space-x-1">
+      <div class="flex items-center gap-1">
         <template v-for="pageNum in displayedPages" :key="pageNum">
           <button
             v-if="pageNum !== '...'"
-            @click="$emit('page-change', pageNum as number)"
-            class="inline-flex items-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md"
+            type="button"
+            class="inline-flex min-h-11 min-w-11 items-center justify-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md sm:min-h-9 sm:min-w-9"
             :class="[
               currentPage === pageNum
                 ? 'bg-[#5f8796] text-white shadow-[#9fb8bf]/35'
@@ -55,39 +48,34 @@
                   ? 'bg-[#263941] text-[#d8e3e5] hover:bg-[#2d4751]'
                   : 'bg-[#edf4f5] text-[#415d66] hover:bg-[#e2ecee]'
             ]"
+            :aria-label="t('components.pagination.goToPage', { page: pageNum })"
+            :aria-current="currentPage === pageNum ? 'page' : undefined"
+            @click="$emit('page-change', pageNum as number)"
           >
             {{ pageNum }}
           </button>
-          <span v-else class="px-2" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-500']">
-            ...
-          </span>
+          <span v-else class="px-1" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-600']">…</span>
         </template>
       </div>
 
       <button
-        @click="$emit('page-change', currentPage + 1)"
+        type="button"
         :disabled="currentPage >= totalPages"
-        class="inline-flex items-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md"
-        :class="[
-          isDarkMode
-            ? currentPage >= totalPages
-              ? 'cursor-not-allowed bg-[#223039] text-[#657a80]'
-              : 'bg-[#263941] text-[#d8e3e5] hover:bg-[#2d4751]'
-            : currentPage >= totalPages
-              ? 'cursor-not-allowed bg-[#e8eeee] text-[#9aa9ad]'
-              : 'bg-[#edf4f5] text-[#415d66] hover:bg-[#e2ecee]'
-        ]"
+        class="inline-flex min-h-11 items-center rounded-[30px] px-3 py-1.5 shadow-sm transition-all duration-200 hover:shadow-md sm:min-h-9"
+        :class="buttonClass(currentPage >= totalPages)"
+        @click="$emit('page-change', currentPage + 1)"
       >
-        下一页
-        <ChevronRightIcon class="w-4 h-4" />
+        {{ t('common.next') }}
+        <ChevronRightIcon class="h-4 w-4" aria-hidden="true" />
       </button>
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { inject, computed } from 'vue'
+import { computed, inject, type Ref } from 'vue'
 import { ChevronLeftIcon, ChevronRightIcon } from 'lucide-vue-next'
+import { useI18n } from 'vue-i18n'
 
 interface Props {
   currentPage: number
@@ -105,44 +93,33 @@ defineEmits<{
   'page-size-change': [size: number]
 }>()
 
-const isDarkMode = inject('isDarkMode')
+const isDarkMode = inject<Ref<boolean>>('isDarkMode', computed(() => false))
+const { t } = useI18n()
+const totalPages = computed(() => Math.max(1, Math.ceil(props.total / props.pageSize)))
+const rangeStart = computed(() => (props.total ? (props.currentPage - 1) * props.pageSize + 1 : 0))
+const rangeEnd = computed(() => Math.min(props.currentPage * props.pageSize, props.total))
 
-// 计算总页数
-const totalPages = computed(() => Math.ceil(props.total / props.pageSize))
-
-// 计算要显示的页码
 const displayedPages = computed(() => {
   const current = props.currentPage
   const total = totalPages.value
-  const delta = 2 // 当前页码前后显示的页码数
-
-  const pages: (number | string)[] = []
-
-  // 始终显示第一页
-  pages.push(1)
-
-  // 计算显示范围
-  const left = Math.max(2, current - delta)
-  const right = Math.min(total - 1, current + delta)
-
-  // 添加省略号和页码
-  if (left > 2) {
-    pages.push('...')
-  }
-
-  for (let i = left; i <= right; i++) {
-    pages.push(i)
-  }
-
-  if (right < total - 1) {
-    pages.push('...')
-  }
-
-  // 始终显示最后一页
-  if (total > 1) {
-    pages.push(total)
-  }
-
+  const pages: (number | string)[] = [1]
+  const left = Math.max(2, current - 2)
+  const right = Math.min(total - 1, current + 2)
+  if (left > 2) pages.push('...')
+  for (let i = left; i <= right; i++) pages.push(i)
+  if (right < total - 1) pages.push('...')
+  if (total > 1) pages.push(total)
   return pages
 })
+
+const buttonClass = (disabled: boolean) => {
+  if (isDarkMode.value) {
+    return disabled
+      ? 'cursor-not-allowed bg-[#223039] text-[#71878d]'
+      : 'bg-[#263941] text-[#d8e3e5] hover:bg-[#2d4751]'
+  }
+  return disabled
+    ? 'cursor-not-allowed bg-[#e8eeee] text-[#7d8d91]'
+    : 'bg-[#edf4f5] text-[#415d66] hover:bg-[#e2ecee]'
+}
 </script>
diff --git a/src/components/common/DataTable.vue b/src/components/common/DataTable.vue
index a07731c..e7d2caa 100644
--- a/src/components/common/DataTable.vue
+++ b/src/components/common/DataTable.vue
@@ -18,16 +18,18 @@
         <slot name="toolbar"></slot>
       </div>
     </div>
-    <div class="overflow-x-auto">
+    <div class="overflow-x-auto" tabindex="0" role="region" :aria-label="title">
       <table
-        class="min-w-full divide-y"
-        :class="[isDarkMode ? 'divide-[#31454d]' : 'divide-[#d7e3e5]']"
+        class="divide-y"
+        :class="[tableClass, isDarkMode ? 'divide-[#31454d]' : 'divide-[#d7e3e5]']"
       >
+        <caption class="sr-only">{{ title }}</caption>
         <thead>
           <tr>
             <th
               v-for="header in headers"
               :key="header"
+              scope="col"
               class="px-6 py-3.5 text-left text-xs font-medium uppercase tracking-wider"
               :class="[isDarkMode ? 'text-gray-400' : 'text-gray-500']"
             >
@@ -53,9 +55,12 @@ import { inject, useSlots } from 'vue'
 interface Props {
   title: string
   headers: string[]
+  tableClass?: string
 }
 
-defineProps<Props>()
+withDefaults(defineProps<Props>(), {
+  tableClass: 'min-w-full'
+})
 
 const slots = useSlots()
 const isDarkMode = inject('isDarkMode')
diff --git a/src/components/common/ExpirationSelector.vue b/src/components/common/ExpirationSelector.vue
index 458d22f..5fe560d 100644
--- a/src/components/common/ExpirationSelector.vue
+++ b/src/components/common/ExpirationSelector.vue
@@ -1,6 +1,6 @@
 <template>
   <div class="flex flex-col space-y-3">
-    <label :class="['text-sm font-medium', isDarkMode ? 'text-gray-300' : 'text-gray-700']">
+    <label for="send-expiration-value" :class="['text-sm font-medium', isDarkMode ? 'text-gray-300' : 'text-gray-700']">
       {{ t('send.expiration.label') }}
     </label>
     <div class="relative flex-grow group">
@@ -14,6 +14,7 @@
       >
         <template v-if="expirationMethod !== 'forever'">
           <input
+            id="send-expiration-value"
             :value="expirationValue"
             @input="updateValue"
             type="number"
@@ -35,6 +36,7 @@
           >
             <button
               type="button"
+              :aria-label="t('send.expiration.increment')"
               @click="incrementValue(1)"
               class="flex-1 px-2 flex items-center justify-center transition-all duration-200"
               :class="[
@@ -54,6 +56,7 @@
             </button>
             <button
               type="button"
+              :aria-label="t('send.expiration.decrement')"
               @click="incrementValue(-1)"
               class="flex-1 px-2 flex items-center justify-center transition-all duration-200"
               :class="[
@@ -74,6 +77,7 @@
           </div>
         </template>
         <select
+          :aria-label="t('send.expiration.method')"
           :value="expirationMethod"
           @change="updateMethod"
           :class="[
diff --git a/src/components/common/FileRecordList.vue b/src/components/common/FileRecordList.vue
index 300d638..ff423f8 100644
--- a/src/components/common/FileRecordList.vue
+++ b/src/components/common/FileRecordList.vue
@@ -29,8 +29,11 @@
         </div>
         <div class="flex-shrink-0 flex space-x-2">
           <button
+            type="button"
+            :aria-label="t('fileRecord.viewDetails')"
+            :title="t('fileRecord.viewDetails')"
             @click="$emit('view-details', record)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode
                 ? 'hover:bg-indigo-400 text-indigo-400'
@@ -40,8 +43,11 @@
             <EyeIcon class="w-5 h-5" />
           </button>
           <button
+            type="button"
+            :aria-label="t('fileRecord.download')"
+            :title="t('fileRecord.download')"
             @click="$emit('download-record', record)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode
                 ? 'hover:bg-green-400 text-green-400'
@@ -51,8 +57,11 @@
             <DownloadIcon class="w-5 h-5" />
           </button>
           <button
+            type="button"
+            :aria-label="t('fileRecord.deleteRecord')"
+            :title="t('fileRecord.deleteRecord')"
             @click="$emit('delete-record', record.id)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode ? 'hover:bg-red-400 text-red-400' : 'hover:bg-red-100 text-red-600'
             ]"
@@ -69,6 +78,7 @@
 import { inject } from 'vue'
 import { FileIcon, EyeIcon, DownloadIcon, TrashIcon } from 'lucide-vue-next'
 import type { ReceivedFileRecord } from '@/types'
+import { useI18n } from 'vue-i18n'
 
 interface Props {
   records: ReceivedFileRecord[]
@@ -83,6 +93,7 @@ interface Emits {
 defineProps<Props>()
 defineEmits<Emits>()
 const isDarkMode = inject('isDarkMode')
+const { t } = useI18n()
 </script>
 
 <style scoped>
diff --git a/src/components/common/LanguageSwitcher.vue b/src/components/common/LanguageSwitcher.vue
index feb1f13..7166ffe 100644
--- a/src/components/common/LanguageSwitcher.vue
+++ b/src/components/common/LanguageSwitcher.vue
@@ -1,13 +1,17 @@
 <template>
   <div ref="switcherRef" class="relative">
     <button
+      type="button"
       @click="toggleDropdown"
       :class="[
-        'flex items-center space-x-2 px-3 py-2 rounded-lg transition-all duration-200',
+        'flex min-h-11 items-center space-x-2 rounded-lg px-3 py-2 transition-all duration-200',
         isDarkMode
           ? 'bg-gray-800/60 hover:bg-gray-700/80 text-gray-300 hover:text-white'
           : 'bg-gray-100 hover:bg-gray-200 text-gray-700 hover:text-gray-900'
       ]"
+      :aria-expanded="isDropdownOpen"
+      aria-haspopup="listbox"
+      :aria-label="t('common.language')"
     >
       <GlobeIcon class="w-4 h-4" />
       <span class="text-sm font-medium">{{ currentLanguage.name }}</span>
@@ -29,6 +33,7 @@
     >
       <div
         v-if="isDropdownOpen"
+        role="listbox"
         :class="[
           'absolute right-0 mt-2 w-32 rounded-lg shadow-lg ring-1 ring-black ring-opacity-5 z-50',
           isDarkMode
@@ -40,9 +45,12 @@
           <button
             v-for="language in availableLocales"
             :key="language.code"
+            type="button"
+            role="option"
+            :aria-selected="currentLocale === language.code"
             @click="switchLanguage(language.code)"
             :class="[
-              'w-full text-left px-4 py-2 text-sm transition-colors duration-150',
+              'min-h-11 w-full px-4 py-2 text-left text-sm transition-colors duration-150',
               currentLocale === language.code
                 ? isDarkMode
                   ? 'bg-indigo-600 text-white'
@@ -66,7 +74,7 @@ import { useI18n } from 'vue-i18n'
 import { GlobeIcon, ChevronDownIcon } from 'lucide-vue-next'
 import { availableLocales, setLocale } from '@/i18n/index'
 
-const { locale } = useI18n()
+const { locale, t } = useI18n()
 const isDarkMode = inject('isDarkMode')
 const isDropdownOpen = ref(false)
 const switcherRef = ref<HTMLElement | null>(null)
diff --git a/src/components/common/PageFooter.vue b/src/components/common/PageFooter.vue
index 8846e6e..5ab5f5e 100644
--- a/src/components/common/PageFooter.vue
+++ b/src/components/common/PageFooter.vue
@@ -3,7 +3,7 @@
     <div class="mb-6 text-center" v-if="linkText && linkTo">
       <router-link
         :to="linkTo"
-        class="text-indigo-400 hover:text-indigo-300 transition duration-300"
+        class="inline-flex min-h-11 items-center rounded-lg px-3 text-[#3f6a77] transition duration-200 hover:bg-[#dcebed] hover:text-[#315c69] dark:text-[#b8d4dc] dark:hover:bg-[#294047]"
       >
         {{ linkText }}
       </router-link>
@@ -23,7 +23,9 @@
       <div class="flex items-center space-x-4">
         <router-link
           to="/login"
-          class="text-sm hover:text-indigo-300 transition duration-300 flex items-center"
+          class="flex h-11 w-11 items-center justify-center rounded-lg text-sm transition duration-200 hover:bg-[#dcebed] dark:hover:bg-[#294047]"
+          :aria-label="t('manage.login.title')"
+          :title="t('manage.login.title')"
           :class="[
             isDarkMode
               ? 'text-gray-400 hover:text-indigo-400'
@@ -33,8 +35,9 @@
           <UserIcon class="w-4 h-4" />
         </router-link>
         <button
+          type="button"
           @click="$emit('toggle-drawer')"
-          class="text-sm hover:text-indigo-300 transition duration-300 flex items-center"
+          class="flex min-h-11 items-center rounded-lg px-2 text-sm transition duration-200 hover:bg-[#dcebed] dark:hover:bg-[#294047]"
           :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
         >
           {{ drawerText }}
diff --git a/src/components/common/PageHeader.vue b/src/components/common/PageHeader.vue
index 35a8f77..8da010d 100644
--- a/src/components/common/PageHeader.vue
+++ b/src/components/common/PageHeader.vue
@@ -1,6 +1,6 @@
 <template>
   <div class="text-center">
-    <div class="flex justify-center mb-8">
+    <div class="mb-5 flex justify-center" aria-hidden="true">
       <div
         class="rounded-full bg-gradient-to-r from-indigo-500 via-purple-500 to-pink-500 p-1 animate-spin-slow"
       >
@@ -9,17 +9,19 @@
         </div>
       </div>
     </div>
-    <h2
+    <button
+      type="button"
       @click="$emit('title-click')"
-      class="text-3xl cursor-pointer font-extrabold text-center mb-6"
+      class="mb-6 min-h-11 rounded-lg px-2 text-center text-3xl font-extrabold focus:outline-none focus:ring-2 focus:ring-indigo-500"
       :class="[
         isDarkMode
           ? 'text-transparent bg-clip-text bg-gradient-to-r from-indigo-300 via-purple-300 to-pink-300'
           : 'text-indigo-600'
       ]"
+      :aria-label="title"
     >
       {{ title }}
-    </h2>
+    </button>
   </div>
 </template>
 
@@ -54,4 +56,10 @@ const isDarkMode = inject('isDarkMode')
 .animate-spin-slow {
   animation: spin-slow 3s linear infinite;
 }
+
+@media (prefers-reduced-motion: reduce) {
+  .animate-spin-slow {
+    animation: none;
+  }
+}
 </style>
\ No newline at end of file
diff --git a/src/components/common/RetrieveForm.vue b/src/components/common/RetrieveForm.vue
index 46bda72..4cb1fc4 100644
--- a/src/components/common/RetrieveForm.vue
+++ b/src/components/common/RetrieveForm.vue
@@ -12,6 +12,8 @@
           id="code"
           v-model="code"
           type="text"
+          inputmode="text"
+          autocomplete="one-time-code"
           ref="codeInput"
           class="w-full px-4 py-3 rounded-lg placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-indigo-500 transition duration-300 pr-10"
           :class="[
@@ -21,6 +23,7 @@
           ]"
           :placeholder="t('retrieve.codeInput.placeholder')"
           required
+          :aria-invalid="error"
           :readonly="inputStatus.readonly"
           maxlength="5"
           @focus="isInputFocused = true"
@@ -42,8 +45,8 @@
     </div>
     <button
       type="submit"
-      class="w-full bg-gradient-to-r from-indigo-500 via-purple-500 to-pink-500 text-white font-bold py-3 px-4 rounded-lg hover:from-indigo-600 hover:via-purple-600 hover:to-pink-600 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 transition duration-300 transform hover:scale-105 hover:shadow-lg relative overflow-hidden group"
-      :disabled="inputStatus.loading"
+      class="group relative w-full overflow-hidden rounded-lg bg-gradient-to-r from-indigo-500 via-purple-500 to-pink-500 px-4 py-3 font-bold text-white transition duration-300 hover:from-indigo-600 hover:via-purple-600 hover:to-pink-600 hover:shadow-lg focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-opacity-50 disabled:cursor-not-allowed disabled:opacity-50 motion-safe:hover:scale-[1.02] disabled:hover:scale-100"
+      :disabled="inputStatus.loading || code.trim().length !== 5"
     >
       <span class="flex items-center justify-center relative z-10">
         <span>{{ inputStatus.loading ? t('common.loading') : t('retrieve.submit') }}</span>
diff --git a/src/components/common/SendTypeSelector.vue b/src/components/common/SendTypeSelector.vue
index b250404..6bb8d1c 100644
--- a/src/components/common/SendTypeSelector.vue
+++ b/src/components/common/SendTypeSelector.vue
@@ -4,7 +4,7 @@
       type="button"
       @click="selectType('file')"
       :class="[
-        'px-4 py-2 rounded-lg transition-colors duration-300',
+        'min-h-11 px-4 py-2 rounded-lg transition-colors duration-300',
         selectedType === 'file' 
           ? 'bg-indigo-600 text-white' 
           : isDarkMode 
@@ -18,7 +18,7 @@
       type="button"
       @click="selectType('text')"
       :class="[
-        'px-4 py-2 rounded-lg transition-colors duration-300',
+        'min-h-11 px-4 py-2 rounded-lg transition-colors duration-300',
         selectedType === 'text' 
           ? 'bg-indigo-600 text-white' 
           : isDarkMode 
diff --git a/src/components/common/SentRecordList.vue b/src/components/common/SentRecordList.vue
index 5773ced..91d9b6c 100644
--- a/src/components/common/SentRecordList.vue
+++ b/src/components/common/SentRecordList.vue
@@ -26,8 +26,11 @@
         </div>
         <div class="flex-shrink-0 flex space-x-2">
           <button
+            type="button"
+            :aria-label="t('common.copy')"
+            :title="t('common.copy')"
             @click="$emit('copy-link', record)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode ? 'hover:bg-blue-400 text-blue-400' : 'hover:bg-blue-100 text-blue-600'
             ]"
@@ -35,8 +38,11 @@
             <ClipboardCopyIcon class="w-5 h-5" />
           </button>
           <button
+            type="button"
+            :aria-label="t('fileRecord.viewDetails')"
+            :title="t('fileRecord.viewDetails')"
             @click="$emit('view-details', record)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode
                 ? 'hover:bg-green-400 text-green-400'
@@ -46,8 +52,11 @@
             <EyeIcon class="w-5 h-5" />
           </button>
           <button
+            type="button"
+            :aria-label="t('fileRecord.deleteRecord')"
+            :title="t('fileRecord.deleteRecord')"
             @click="$emit('delete-record', record.id)"
-            class="p-2 rounded-full hover:bg-opacity-20 transition duration-300"
+            class="flex h-11 w-11 items-center justify-center rounded-full transition duration-200 hover:bg-opacity-20"
             :class="[
               isDarkMode ? 'hover:bg-red-400 text-red-400' : 'hover:bg-red-100 text-red-600'
             ]"
@@ -64,6 +73,7 @@
 import { inject } from 'vue'
 import { ClipboardCopyIcon, EyeIcon, FileIcon, TrashIcon } from 'lucide-vue-next'
 import type { SentFileRecord } from '@/types'
+import { useI18n } from 'vue-i18n'
 
 defineProps<{
   records: SentFileRecord[]
@@ -76,6 +86,7 @@ defineEmits<{
 }>()
 
 const isDarkMode = inject('isDarkMode')
+const { t } = useI18n()
 </script>
 
 <style scoped>
diff --git a/src/components/common/SettingNumberInput.vue b/src/components/common/SettingNumberInput.vue
index a44453a..e566efa 100644
--- a/src/components/common/SettingNumberInput.vue
+++ b/src/components/common/SettingNumberInput.vue
@@ -1,17 +1,18 @@
 <template>
   <div class="space-y-2">
-    <label class="block text-sm font-medium" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
+    <label :for="inputId" class="block text-sm font-medium" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
       {{ label }}
     </label>
-    <div class="flex items-center space-x-2">
+    <div class="flex items-center gap-2">
       <input
+        :id="inputId"
         type="number"
         :value="modelValue"
-        class="w-24 rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
+        class="min-h-11 w-28 rounded-md border px-4 py-2.5 shadow-sm outline-none transition-all duration-200 focus:border-indigo-500 focus:ring-2 focus:ring-indigo-500"
         :class="[
           isDarkMode
-            ? 'bg-gray-700 border-gray-600 text-white placeholder-gray-400 hover:border-gray-500'
-            : 'border-gray-300 hover:border-gray-400 placeholder-gray-500'
+            ? 'border-gray-600 bg-gray-700 text-white hover:border-gray-500'
+            : 'border-gray-300 bg-white text-gray-900 hover:border-gray-400'
         ]"
         @input="handleInput"
       />
@@ -21,19 +22,12 @@
 </template>
 
 <script setup lang="ts">
-import { inject } from 'vue'
-
-defineProps<{
-  label: string
-  modelValue: number
-  suffix: string
-}>()
+import { computed, inject } from 'vue'
 
+const props = defineProps<{ label: string; modelValue: number; suffix: string }>()
+const inputId = computed(() => `setting-number-${props.label.toLowerCase().replace(/[^a-z0-9\u4e00-\u9fa5]+/gi, '-')}`)
 const isDarkMode = inject('isDarkMode')
-
-const emit = defineEmits<{
-  'update:modelValue': [value: number]
-}>()
+const emit = defineEmits<{ 'update:modelValue': [value: number] }>()
 
 const handleInput = (event: Event) => {
   const input = event.target as HTMLInputElement
@@ -41,10 +35,7 @@ const handleInput = (event: Event) => {
     emit('update:modelValue', 0)
     return
   }
-
   const nextValue = input.valueAsNumber
-  if (!Number.isNaN(nextValue)) {
-    emit('update:modelValue', nextValue)
-  }
+  if (!Number.isNaN(nextValue)) emit('update:modelValue', nextValue)
 }
 </script>
diff --git a/src/components/common/SettingSwitch.vue b/src/components/common/SettingSwitch.vue
index 160aa07..1a9643d 100644
--- a/src/components/common/SettingSwitch.vue
+++ b/src/components/common/SettingSwitch.vue
@@ -1,32 +1,29 @@
 <template>
   <div class="space-y-2">
-    <label class="block text-sm font-medium mb-2" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
+    <span :id="labelId" class="block text-sm font-medium" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
       {{ label }}
-    </label>
-    <div class="flex items-center">
+    </span>
+    <div class="flex min-h-11 items-center gap-3">
       <button
         type="button"
-        class="relative inline-flex h-6 w-11 flex-shrink-0 cursor-pointer rounded-full border-2 border-transparent shadow-sm transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-[#8fb2bf] focus:ring-offset-2"
-        :class="[
-          modelValue === 1
-            ? 'bg-[#6f9688]'
-            : isDarkMode
-              ? 'bg-[#40545c]'
-              : 'bg-[#cfdadc]'
-        ]"
+        class="flex h-11 w-14 shrink-0 items-center justify-center rounded-full focus:outline-none focus:ring-2 focus:ring-[#8fb2bf] focus:ring-offset-2"
         role="switch"
         :aria-checked="modelValue === 1"
+        :aria-labelledby="labelId"
         @click="$emit('toggle')"
       >
         <span
-          class="pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200 ease-in-out"
-          :class="[
-            modelValue === 1 ? 'translate-x-5' : 'translate-x-0',
-            isDarkMode && modelValue !== 1 ? 'bg-gray-100' : 'bg-white'
-          ]"
-        />
+          class="relative inline-flex h-6 w-11 rounded-full border-2 border-transparent shadow-sm transition-colors duration-200"
+          :class="modelValue === 1 ? 'bg-[#6f9688]' : isDarkMode ? 'bg-[#40545c]' : 'bg-[#cfdadc]'"
+          aria-hidden="true"
+        >
+          <span
+            class="pointer-events-none inline-block h-5 w-5 transform rounded-full bg-white shadow ring-0 transition duration-200"
+            :class="modelValue === 1 ? 'translate-x-5' : 'translate-x-0'"
+          ></span>
+        </span>
       </button>
-      <span class="ml-3 text-sm" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
+      <span class="text-sm" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-700']">
         {{ modelValue === 1 ? enabledText : disabledText }}
       </span>
     </div>
@@ -34,18 +31,10 @@
 </template>
 
 <script setup lang="ts">
-import { inject } from 'vue'
-
-defineProps<{
-  label: string
-  modelValue: number
-  enabledText: string
-  disabledText: string
-}>()
-
-defineEmits<{
-  toggle: []
-}>()
+import { computed, inject } from 'vue'
 
+const props = defineProps<{ label: string; modelValue: number; enabledText: string; disabledText: string }>()
+defineEmits<{ toggle: [] }>()
 const isDarkMode = inject('isDarkMode')
+const labelId = computed(() => `setting-switch-${props.label.toLowerCase().replace(/[^a-z0-9\u4e00-\u9fa5]+/gi, '-')}`)
 </script>
diff --git a/src/components/common/SideDrawer.vue b/src/components/common/SideDrawer.vue
index c19b36f..157fed1 100644
--- a/src/components/common/SideDrawer.vue
+++ b/src/components/common/SideDrawer.vue
@@ -1,63 +1,124 @@
 <template>
-  <transition name="drawer">
-    <div
-      v-if="visible"
-      class="fixed inset-y-0 right-0 w-full sm:w-120 bg-opacity-70 backdrop-filter backdrop-blur-xl shadow-2xl z-50 overflow-hidden flex flex-col"
-      :class="[isDarkMode ? 'bg-gray-900' : 'bg-white']"
-    >
-      <div
-        class="flex justify-between items-center p-6 border-b"
-        :class="[isDarkMode ? 'border-gray-700' : 'border-gray-200']"
-      >
-        <h3 class="text-2xl font-bold" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
-          {{ title }}
-        </h3>
+  <Teleport to="body">
+    <transition name="drawer">
+      <div v-if="visible" class="fixed inset-0 z-50">
         <button
-          @click="$emit('close')"
-          class="hover:text-white transition duration-300"
-          :class="[isDarkMode ? 'text-gray-400' : 'text-gray-800']"
+          type="button"
+          class="absolute inset-0 bg-black/45"
+          :aria-label="t('common.close')"
+          @click="emit('close')"
+        ></button>
+        <aside
+          ref="drawerRef"
+          role="dialog"
+          aria-modal="true"
+          :aria-label="title"
+          tabindex="-1"
+          class="absolute inset-y-0 right-0 flex w-full flex-col overflow-hidden bg-opacity-95 shadow-2xl backdrop-blur-xl sm:w-[30rem]"
+          :class="[isDarkMode ? 'bg-gray-900' : 'bg-white']"
+          @keydown="handleKeydown"
         >
-          <XIcon class="w-6 h-6" />
-        </button>
+          <div
+            class="flex items-center justify-between border-b p-4 sm:p-6"
+            :class="[isDarkMode ? 'border-gray-700' : 'border-gray-200']"
+          >
+            <h3 class="text-xl font-bold sm:text-2xl" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
+              {{ title }}
+            </h3>
+            <button
+              type="button"
+              class="flex h-11 w-11 items-center justify-center rounded-lg transition duration-200"
+              :class="[isDarkMode ? 'text-gray-300 hover:bg-gray-800 hover:text-white' : 'text-gray-700 hover:bg-gray-100']"
+              :aria-label="t('common.close')"
+              :title="t('common.close')"
+              @click="emit('close')"
+            >
+              <XIcon class="h-6 w-6" aria-hidden="true" />
+            </button>
+          </div>
+          <div class="min-h-0 flex-1 overflow-y-auto" tabindex="0">
+            <slot></slot>
+          </div>
+        </aside>
       </div>
-      <slot></slot>
-    </div>
-  </transition>
+    </transition>
+  </Teleport>
 </template>
 
 <script setup lang="ts">
-import { inject } from 'vue'
+import { inject, nextTick, ref, watch } from 'vue'
 import { XIcon } from 'lucide-vue-next'
+import { useI18n } from 'vue-i18n'
 
-interface Props {
-  visible: boolean
-  title: string
-}
-
-interface Emits {
-  close: []
-}
-
-defineProps<Props>()
-defineEmits<Emits>()
+const props = defineProps<{ visible: boolean; title: string }>()
+const emit = defineEmits<{ close: [] }>()
+const { t } = useI18n()
 const isDarkMode = inject('isDarkMode')
+const drawerRef = ref<HTMLElement>()
+let returnFocusElement: HTMLElement | null = null
+const focusableSelector =
+  'button:not([disabled]), [href], input:not([disabled]), select:not([disabled]), textarea:not([disabled]), [tabindex]:not([tabindex="-1"])'
+
+const handleKeydown = (event: KeyboardEvent) => {
+  if (event.key === 'Escape') {
+    event.preventDefault()
+    emit('close')
+    return
+  }
+  if (event.key !== 'Tab' || !drawerRef.value) return
+  const focusable = [...drawerRef.value.querySelectorAll<HTMLElement>(focusableSelector)]
+  const first = focusable[0]
+  const last = focusable[focusable.length - 1]
+  if (!first || !last) return
+  if (event.shiftKey && document.activeElement === first) {
+    event.preventDefault()
+    last.focus()
+  } else if (!event.shiftKey && document.activeElement === last) {
+    event.preventDefault()
+    first.focus()
+  }
+}
+
+watch(
+  () => props.visible,
+  async (visible) => {
+    if (visible) {
+      returnFocusElement = document.activeElement instanceof HTMLElement ? document.activeElement : null
+      await nextTick()
+      const first = drawerRef.value?.querySelector<HTMLElement>(focusableSelector)
+      ;(first || drawerRef.value)?.focus()
+    } else {
+      await nextTick()
+      returnFocusElement?.focus()
+      returnFocusElement = null
+    }
+  }
+)
 </script>
 
 <style scoped>
 .drawer-enter-active,
 .drawer-leave-active {
-  transition: transform 0.3s ease;
+  transition: opacity 0.24s ease;
+}
+.drawer-enter-active aside,
+.drawer-leave-active aside {
+  transition: transform 0.24s ease;
 }
-
 .drawer-enter-from,
 .drawer-leave-to {
+  opacity: 0;
+}
+.drawer-enter-from aside,
+.drawer-leave-to aside {
   transform: translateX(100%);
 }
-
-@media (min-width: 640px) {
-  .sm\:w-120 {
-    width: 30rem;
-    /* 480px */
+@media (prefers-reduced-motion: reduce) {
+  .drawer-enter-active,
+  .drawer-leave-active,
+  .drawer-enter-active aside,
+  .drawer-leave-active aside {
+    transition-duration: 0.01ms;
   }
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/src/components/common/StatCard.vue b/src/components/common/StatCard.vue
index 29ae39a..8aacf85 100644
--- a/src/components/common/StatCard.vue
+++ b/src/components/common/StatCard.vue
@@ -9,10 +9,10 @@
   >
     <div class="flex items-center justify-between gap-3">
       <div class="min-w-0">
-        <p class="truncate text-xs sm:text-sm" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-600']">
+        <p class="line-clamp-2 text-xs leading-tight sm:text-sm" :title="title" :class="[isDarkMode ? 'text-gray-300' : 'text-gray-600']">
           {{ title }}
         </p>
-        <h3 class="mt-1 truncate text-xl font-bold tabular-nums sm:text-2xl" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
+        <h3 class="mt-1 break-words text-xl font-bold leading-tight tabular-nums sm:text-2xl" :title="String(value)" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
           {{ value }}
         </h3>
       </div>
@@ -20,10 +20,10 @@
         class="shrink-0 rounded-full p-2.5 transition-transform duration-300 group-hover:scale-105 sm:p-3"
         :class="iconBgClass"
       >
-        <component :is="icon" class="h-5 w-5 sm:h-6 sm:w-6" :class="iconClass" />
+        <component :is="icon" class="h-5 w-5 sm:h-6 sm:w-6" :class="iconClass" aria-hidden="true" />
       </div>
     </div>
-    <p class="mt-2 line-clamp-1 text-xs sm:text-sm" :class="descriptionClass">
+    <p class="mt-2 line-clamp-2 text-xs sm:text-sm" :class="descriptionClass">
       <slot name="description"></slot>
     </p>
   </div>
diff --git a/src/components/common/ThemeToggle.vue b/src/components/common/ThemeToggle.vue
index 9b0178a..5510417 100644
--- a/src/components/common/ThemeToggle.vue
+++ b/src/components/common/ThemeToggle.vue
@@ -1,9 +1,11 @@
 <script setup lang="ts">
 import { inject } from 'vue'
 import { SunIcon, MoonIcon } from 'lucide-vue-next'
+import { useI18n } from 'vue-i18n'
 
 const isDarkMode = inject('isDarkMode') as { value: boolean }
 const toggleTheme = inject('toggleTheme') as () => void
+const { t } = useI18n()
 
 const toggleColorMode = () => {
   toggleTheme()
@@ -12,8 +14,11 @@ const toggleColorMode = () => {
 
 <template>
   <button
+    type="button"
     @click="toggleColorMode"
-    class="rounded-full p-2 shadow-sm transition-all duration-500 hover:shadow-md focus:outline-none focus:ring-2 focus:ring-[#8fb2bf] focus:ring-offset-2 transform hover:rotate-180"
+    class="flex h-11 w-11 items-center justify-center rounded-full shadow-sm transition-all duration-200 hover:shadow-md focus:outline-none focus:ring-2 focus:ring-[#8fb2bf] focus:ring-offset-2 motion-safe:hover:rotate-180"
+    :aria-label="isDarkMode ? t('common.switchToLight') : t('common.switchToDark')"
+    :title="isDarkMode ? t('common.switchToLight') : t('common.switchToDark')"
     :class="
       isDarkMode
         ? 'bg-[#263941] text-[#d8c98e]'
diff --git a/src/composables/useDashboardStats.ts b/src/composables/useDashboardStats.ts
index 9de8ab7..7c31123 100644
--- a/src/composables/useDashboardStats.ts
+++ b/src/composables/useDashboardStats.ts
@@ -1,4 +1,5 @@
 import { computed, ref, reactive } from 'vue'
+import { useI18n } from 'vue-i18n'
 import { StatsService } from '@/services'
 import type { DashboardData, DashboardHealthSummary, DashboardViewData } from '@/types'
 import { formatFileSize, getErrorMessage } from '@/utils/common'
@@ -54,12 +55,12 @@ const clampRatio = (value: number) => Math.max(0, Math.min(100, Math.round(value
 
 const hasOwn = (target: object, key: string) => Object.prototype.hasOwnProperty.call(target, key)
 
-const formatDuration = (startTimestamp: number | null) => {
+const formatDuration = (startTimestamp: number | null, dayLabel: string, hourLabel: string) => {
   if (!startTimestamp) return '-'
   const uptime = Date.now() - startTimestamp
   const days = Math.floor(uptime / (24 * 60 * 60 * 1000))
   const hours = Math.floor((uptime % (24 * 60 * 60 * 1000)) / (60 * 60 * 1000))
-  return `${days}天${hours}小时`
+  return `${days}${dayLabel} ${hours}${hourLabel}`
 }
 
 const healthSummaryKeys: (keyof DashboardHealthSummary)[] = [
@@ -91,12 +92,15 @@ const normalizeHealthSummary = (detail: DashboardData): DashboardHealthSummary =
 })
 
 export function useDashboardStats(options: UseDashboardStatsOptions = {}) {
+  const { t, locale } = useI18n()
   const dashboardData = reactive<DashboardViewData>(emptyDashboardData())
   const isLoading = ref(false)
   const errorMessage = ref('')
   const lastUpdatedAt = ref<Date | null>(null)
   const lastUpdatedText = computed(() =>
-    lastUpdatedAt.value ? lastUpdatedAt.value.toLocaleString() : '-'
+    lastUpdatedAt.value
+      ? new Intl.DateTimeFormat(locale.value, { dateStyle: 'medium', timeStyle: 'short' }).format(lastUpdatedAt.value)
+      : '-'
   )
 
   const fetchDashboardData = async () => {
@@ -140,7 +144,11 @@ export function useDashboardStats(options: UseDashboardStatsOptions = {}) {
       dashboardData.yesterdaySizeText = formatFileSize(dashboardData.yesterdaySize)
       dashboardData.todaySizeText = formatFileSize(dashboardData.todaySize)
       dashboardData.uploadSizeLimitText = formatFileSize(dashboardData.uploadSizeLimit)
-      dashboardData.sysUptimeText = formatDuration(dashboardData.sysUptime)
+      dashboardData.sysUptimeText = formatDuration(
+        dashboardData.sysUptime,
+        t('common.dayShort'),
+        t('common.hourShort')
+      )
       dashboardData.activeRatio = dashboardData.totalFiles
         ? clampRatio((dashboardData.activeCount / dashboardData.totalFiles) * 100)
         : 0
diff --git a/src/i18n/locales/en-US.ts b/src/i18n/locales/en-US.ts
index 388229e..80bb11c 100644
--- a/src/i18n/locales/en-US.ts
+++ b/src/i18n/locales/en-US.ts
@@ -10,6 +10,14 @@ export default {
     add: 'Add',
     back: 'Back',
     next: 'Next',
+    language: 'Select language',
+    switchToLight: 'Switch to light mode',
+    switchToDark: 'Switch to dark mode',
+    showPassword: 'Show password',
+    hidePassword: 'Hide password',
+    openMenu: 'Open navigation menu',
+    closeMenu: 'Close navigation menu',
+    dialog: 'Dialog',
     previous: 'Previous',
     loading: 'Loading...',
     noData: 'No Data',
@@ -46,6 +54,8 @@ export default {
     second: 'second',
     hour: 'hour',
     day: 'day',
+    dayShort: 'd',
+    hourShort: 'h',
     times: 'times',
     appName: 'FileCodeBox - File Transfer',
     appDescription: 'Ready-to-use file transfer system'
@@ -111,6 +121,29 @@ export default {
           title: 'Permanent',
           description: 'View long-retention share records'
         }
+      },
+      topDownloads: {
+        title: 'Top 5 Downloads',
+        description: 'Downloads and traffic in the selected date range',
+        file: 'File',
+        downloads: 'Downloads',
+        traffic: 'Traffic',
+        status: 'Status',
+        empty: 'No download records',
+        current: 'Current',
+        history: 'Historical'
+      },
+      trend: {
+        title: 'Download / Upload Trend',
+        mobileHint: 'Tap or slide to inspect; drag the bottom date axis to pan',
+        startDate: 'Start date',
+        endDate: 'End date',
+        zoomIn: 'Zoom in',
+        zoomOut: 'Zoom out',
+        reset: 'Reset',
+        noData: 'No data',
+        loadFailed: 'Failed to load analytics',
+        summary: '{window}: {downloads} downloads / {downloadTraffic}, {uploads} uploads / {uploadTraffic}'
       }
     },
     fileManage: {
@@ -313,6 +346,9 @@ export default {
       forever: 'Forever',
       count: 'By Count',
       label: 'Expiration Time',
+      method: 'Expiration method',
+      increment: 'Increase expiration value',
+      decrement: 'Decrease expiration value',
       placeholders: {
         days: 'Enter days',
         hours: 'Enter hours',
@@ -741,6 +777,11 @@ export default {
       unsavedChanges: 'Unsaved configuration changes',
       allChangesSaved: 'All configuration changes are saved',
       refreshBlocked: 'Save current changes before refreshing'
+      ,sectionNavigation: 'Settings section navigation'
+      ,reloadSaved: 'Reload saved settings'
+      ,robotsWarning: 'A Disallow: / rule blocks search engines from crawling the entire site.'
+      ,fileSizeUnit: 'File size unit'
+      ,timeUnit: 'Time unit'
     },
     systemSettings: {
       title: 'System Settings',
@@ -924,6 +965,10 @@ export default {
   // Components
   components: {
     pagination: {
+      range: 'Showing {start} to {end} of {total}',
+      pageSize: 'Items per page',
+      perPage: '{size}/page',
+      goToPage: 'Go to page {page}',
       showing: 'Showing',
       to: 'to',
       of: 'of',
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index 0dd5af9..f282d13 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -10,6 +10,14 @@ export default {
     add: '添加',
     back: '返回',
     next: '下一页',
+    language: '选择语言',
+    switchToLight: '切换到浅色模式',
+    switchToDark: '切换到深色模式',
+    showPassword: '显示密码',
+    hidePassword: '隐藏密码',
+    openMenu: '打开导航菜单',
+    closeMenu: '关闭导航菜单',
+    dialog: '对话框',
     previous: '上一页',
     loading: '加载中...',
     noData: '暂无数据',
@@ -46,6 +54,8 @@ export default {
     second: '秒',
     hour: '小时',
     day: '天',
+    dayShort: '天',
+    hourShort: '小时',
     times: '次',
     appName: '文件快递柜 - FileCodeBox',
     appDescription: '开箱即用的文件快传系统'
@@ -111,6 +121,29 @@ export default {
           title: '永久有效',
           description: '查看长期保留的分享记录'
         }
+      },
+      topDownloads: {
+        title: '热门下载 Top 5',
+        description: '统计当前日期范围内的下载次数和流量',
+        file: '文件',
+        downloads: '下载',
+        traffic: '流量',
+        status: '状态',
+        empty: '暂无下载记录',
+        current: '现存',
+        history: '历史'
+      },
+      trend: {
+        title: '下载/上传趋势',
+        mobileHint: '轻触或滑动查看数据；拖动底部日期轴平移图表',
+        startDate: '开始日期',
+        endDate: '结束日期',
+        zoomIn: '放大',
+        zoomOut: '缩小',
+        reset: '重置',
+        noData: '无数据',
+        loadFailed: '统计加载失败',
+        summary: '{window}，下载 {downloads} 次 / {downloadTraffic}，上传 {uploads} 次 / {uploadTraffic}'
       }
     },
     fileManage: {
@@ -342,6 +375,9 @@ export default {
     },
     expiration: {
       label: '过期时间',
+      method: '过期方式',
+      increment: '增加过期值',
+      decrement: '减少过期值',
       placeholders: {
         days: '输入天数',
         hours: '输入小时数',
@@ -769,6 +805,11 @@ export default {
       unsavedChanges: '有未保存的配置变更',
       allChangesSaved: '所有配置已保存',
       refreshBlocked: '请先保存当前变更再刷新'
+      ,sectionNavigation: '设置分区导航'
+      ,reloadSaved: '重新加载已保存配置'
+      ,robotsWarning: '如果包含 Disallow: /，搜索引擎将无法抓取整个站点。'
+      ,fileSizeUnit: '文件大小单位'
+      ,timeUnit: '时间单位'
     },
     dashboard: {
       title: '仪表盘',
@@ -944,6 +985,10 @@ export default {
   // 组件相关
   components: {
     pagination: {
+      range: '显示第 {start} 到 {end} 条，共 {total} 条',
+      pageSize: '每页显示数量',
+      perPage: '{size}/页',
+      goToPage: '前往第 {page} 页',
       showing: '显示第',
       to: '到',
       of: '条，共',
diff --git a/src/layout/AdminLayout/AdminLayout.vue b/src/layout/AdminLayout/AdminLayout.vue
index 162c808..a622b86 100644
--- a/src/layout/AdminLayout/AdminLayout.vue
+++ b/src/layout/AdminLayout/AdminLayout.vue
@@ -38,7 +38,7 @@
             {{ t('common.appName') }}
           </h1>
         </div>
-        <button @click="toggleSidebar" class="lg:hidden">
+        <button type="button" :aria-label="t('common.closeMenu')" :title="t('common.closeMenu')" @click="toggleSidebar" class="flex h-11 w-11 items-center justify-center rounded-lg lg:hidden">
           <XIcon class="w-6 h-6" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']" />
         </button>
       </div>
@@ -49,7 +49,7 @@
           <li v-for="item in menuItems" :key="item.id">
             <RouterLink
               :to="item.redirect"
-              class="flex h-10 w-full items-center rounded-lg border-l-4 px-3 text-sm font-medium"
+              class="flex min-h-11 w-full items-center rounded-lg border-l-4 px-3 text-sm font-medium"
               :class="[
                 route.name === item.id
                   ? isDarkMode
@@ -72,7 +72,7 @@
       <div class="p-4 border-t" :class="[isDarkMode ? 'border-[#31454d]' : 'border-[#c8d7da]']">
         <button
           @click="handleLogout"
-          class="flex items-center w-full p-2 rounded-lg transition-colors duration-200"
+          class="flex min-h-11 w-full items-center rounded-lg p-2 transition-colors duration-200"
           :class="[
             isDarkMode
               ? 'text-[#aebfc3] hover:bg-[#22353c] hover:text-[#edf4f4]'
@@ -93,7 +93,7 @@
         :class="[isDarkMode ? 'bg-[#1a2930] border-[#31454d]' : 'bg-[#f2f6f5] border-[#c8d7da]']"
       >
         <div class="flex h-14 items-center justify-between px-4">
-          <button @click="toggleSidebar" class="lg:hidden">
+          <button type="button" :aria-label="t('common.openMenu')" :title="t('common.openMenu')" @click="toggleSidebar" class="flex h-11 w-11 items-center justify-center rounded-lg lg:hidden">
             <MenuIcon class="w-6 h-6" :class="[isDarkMode ? 'text-gray-400' : 'text-gray-600']" />
           </button>
         </div>
diff --git a/src/main.ts b/src/main.ts
index 0aa1101..ad9dbcd 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -7,6 +7,8 @@ import App from './App.vue'
 import router from './router'
 import i18n from './i18n'
 
+document.documentElement.lang = i18n.global.locale.value
+
 const app = createApp(App)
 
 app.use(createPinia())
diff --git a/src/views/SendFileView.vue b/src/views/SendFileView.vue
index 7334f15..e5b2dfd 100644
--- a/src/views/SendFileView.vue
+++ b/src/views/SendFileView.vue
@@ -82,7 +82,7 @@
           </button>
         </form>
         <div class="mt-6 text-center">
-          <router-link to="/" class="text-indigo-400 hover:text-indigo-300 transition duration-300">
+          <router-link to="/" class="inline-flex min-h-11 items-center rounded-lg px-3 text-[#3f6a77] transition duration-200 hover:bg-[#dcebed] hover:text-[#315c69] dark:text-[#b8d4dc] dark:hover:bg-[#294047]">
             {{ t('send.needRetrieveFile') }}
           </router-link>
         </div>
@@ -100,8 +100,9 @@
           {{ t('send.secureEncryption') }}
         </span>
         <button
+          type="button"
           @click="toggleDrawer"
-          class="text-sm hover:text-indigo-300 transition duration-300 flex items-center"
+          class="flex min-h-11 items-center rounded-lg px-2 text-sm transition duration-200 hover:bg-indigo-50 dark:hover:bg-gray-700"
           :class="[isDarkMode ? 'text-indigo-400' : 'text-indigo-600']"
         >
           {{ t('send.sendRecords') }}
diff --git a/src/views/manage/DashboardView.vue b/src/views/manage/DashboardView.vue
index 6bdff37..983a8c7 100644
--- a/src/views/manage/DashboardView.vue
+++ b/src/views/manage/DashboardView.vue
@@ -236,18 +236,18 @@
         <div class="mb-5 flex flex-col gap-4">
           <div class="flex min-w-0 flex-col gap-3 xl:flex-row xl:items-start xl:justify-between">
             <div class="min-w-0">
-              <h3 class="text-lg font-semibold" :class="[primaryTextClass]">下载/上传趋势</h3>
+              <h3 class="text-lg font-semibold" :class="[primaryTextClass]">{{ t('admin.dashboard.trend.title') }}</h3>
               <p class="break-words text-sm leading-5" :class="[mutedTextClass]">
                 {{ analyticsSummaryText }}
               </p>
-              <p class="mt-1 text-xs sm:hidden" :class="[mutedTextClass]">轻触或滑动查看数据；拖动底部日期轴平移图表</p>
+              <p class="mt-1 text-xs sm:hidden" :class="[mutedTextClass]">{{ t('admin.dashboard.trend.mobileHint') }}</p>
             </div>
             <div class="flex shrink-0 flex-wrap items-center justify-end gap-2 xl:flex-nowrap">
               <div class="analytics-date-range flex min-w-0 items-center justify-center gap-1.5 sm:gap-2">
               <NativeDateSelect
                 v-model="analyticsStart"
                 :field-class="fieldClass"
-                aria-label="开始日期"
+                :aria-label="t('admin.dashboard.trend.startDate')"
                 @change="fetchAnalyticsData"
               />
               <span
@@ -259,7 +259,7 @@
               <NativeDateSelect
                 v-model="analyticsEnd"
                 :field-class="fieldClass"
-                aria-label="结束日期"
+                :aria-label="t('admin.dashboard.trend.endDate')"
                 @change="fetchAnalyticsData"
               />
             </div>
@@ -270,7 +270,7 @@
                 class="h-9 min-w-16"
                 @click="trendCanvas?.zoom(0.75)"
               >
-                放大
+                {{ t('admin.dashboard.trend.zoomIn') }}
               </BaseButton>
               <BaseButton
                 variant="outline"
@@ -278,7 +278,7 @@
                 class="h-9 min-w-16"
                 @click="trendCanvas?.zoom(1.33)"
               >
-                缩小
+                {{ t('admin.dashboard.trend.zoomOut') }}
               </BaseButton>
               <BaseButton
                 variant="outline"
@@ -286,7 +286,7 @@
                 class="h-9 min-w-16"
                 @click="trendCanvas?.resetWindow()"
               >
-                重置
+                {{ t('admin.dashboard.trend.reset') }}
               </BaseButton>
             </div>
           </div>
@@ -317,15 +317,15 @@
       >
         <div class="mb-5 flex items-center justify-between">
           <div>
-            <h3 class="text-lg font-semibold" :class="[primaryTextClass]">热门下载 Top 5</h3>
-            <p class="text-sm" :class="[mutedTextClass]">统计当前日期范围内的下载次数和流量</p>
+            <h3 class="text-lg font-semibold" :class="[primaryTextClass]">{{ t('admin.dashboard.topDownloads.title') }}</h3>
+            <p class="text-sm" :class="[mutedTextClass]">{{ t('admin.dashboard.topDownloads.description') }}</p>
           </div>
           <DownloadCloudIcon
             class="h-5 w-5"
             :class="[isDarkMode ? 'text-[#b8d4dc]' : 'text-[#5f8796]']"
           />
         </div>
-        <div class="overflow-x-auto">
+        <div class="overflow-x-auto" tabindex="0" role="region" :aria-label="t('admin.dashboard.topDownloads.title')">
           <table
             class="min-w-full divide-y"
             :class="[isDarkMode ? 'divide-gray-700' : 'divide-gray-200']"
@@ -336,32 +336,32 @@
                   class="px-4 py-3 text-left text-xs font-semibold uppercase"
                   :class="[mutedTextClass]"
                 >
-                  文件
+                  {{ t('admin.dashboard.topDownloads.file') }}
                 </th>
                 <th
                   class="px-4 py-3 text-left text-xs font-semibold uppercase"
                   :class="[mutedTextClass]"
                 >
-                  下载
+                  {{ t('admin.dashboard.topDownloads.downloads') }}
                 </th>
                 <th
                   class="px-4 py-3 text-left text-xs font-semibold uppercase"
                   :class="[mutedTextClass]"
                 >
-                  流量
+                  {{ t('admin.dashboard.topDownloads.traffic') }}
                 </th>
                 <th
                   class="px-4 py-3 text-left text-xs font-semibold uppercase"
                   :class="[mutedTextClass]"
                 >
-                  状态
+                  {{ t('admin.dashboard.topDownloads.status') }}
                 </th>
               </tr>
             </thead>
             <tbody class="divide-y" :class="[isDarkMode ? 'divide-gray-700' : 'divide-gray-100']">
               <tr v-if="analyticsTopFiles.length === 0">
                 <td colspan="4" class="px-4 py-8 text-center text-sm" :class="[mutedTextClass]">
-                  暂无下载记录
+                  {{ t('admin.dashboard.topDownloads.empty') }}
                 </td>
               </tr>
               <tr
@@ -383,7 +383,7 @@
                   {{ formatBytes(file.download_traffic) }}
                 </td>
                 <td class="px-4 py-3 text-sm" :class="[mutedTextClass]">
-                  {{ file.current ? '现存' : '历史' }}
+                  {{ file.current ? t('admin.dashboard.topDownloads.current') : t('admin.dashboard.topDownloads.history') }}
                 </td>
               </tr>
             </tbody>
@@ -497,7 +497,7 @@ const analyticsEnd = ref(today())
 const analyticsData = ref<AnalyticsData | null>(null)
 const analyticsError = ref('')
 const isAnalyticsLoading = ref(false)
-const analyticsWindowText = ref('无数据')
+const analyticsWindowText = ref(t('admin.dashboard.trend.noData'))
 const analyticsDailyRows = computed(() => analyticsData.value?.daily || [])
 const analyticsTopFiles = computed<AnalyticsFileRow[]>(() => analyticsData.value?.topFiles || [])
 const analyticsUploadTrafficText = computed(() =>
@@ -506,13 +506,14 @@ const analyticsUploadTrafficText = computed(() =>
 const analyticsDownloadTrafficText = computed(() =>
   formatBytes(analyticsData.value?.totals?.downloadTraffic || 0)
 )
-const analyticsSummaryText = computed(
-  () =>
-    `${analyticsWindowText.value}，下载 ${analyticsData.value?.totals?.totalDownloads || 0} 次 / ${
-      analyticsDownloadTrafficText.value
-    }，上传 ${analyticsData.value?.totals?.totalUploads || 0} 次 / ${
-      analyticsUploadTrafficText.value
-    }`
+const analyticsSummaryText = computed(() =>
+  t('admin.dashboard.trend.summary', {
+    window: analyticsWindowText.value,
+    downloads: analyticsData.value?.totals?.totalDownloads || 0,
+    downloadTraffic: analyticsDownloadTrafficText.value,
+    uploads: analyticsData.value?.totals?.totalUploads || 0,
+    uploadTraffic: analyticsUploadTrafficText.value
+  })
 )
 const formatBytes = (value: number | string | undefined) => formatFileSize(Number(value || 0), 1)
 
@@ -522,7 +523,7 @@ const fetchAnalyticsData = async () => {
   try {
     analyticsData.value = await fetchAnalytics(analyticsStart.value, analyticsEnd.value)
   } catch (error) {
-    analyticsError.value = error instanceof Error ? error.message : '统计加载失败'
+    analyticsError.value = error instanceof Error ? error.message : t('admin.dashboard.trend.loadFailed')
   } finally {
     isAnalyticsLoading.value = false
   }
@@ -641,10 +642,17 @@ const MetricProgress = defineComponent({
             h('span', { class: 'line-clamp-1 text-gray-500 dark:text-gray-400' }, props.label),
             h('span', { class: 'font-medium tabular-nums text-gray-900 dark:text-white' }, `${props.value}%`)
           ]),
-          h('div', { class: 'h-2 overflow-hidden rounded-full bg-gray-100 dark:bg-gray-700' }, [
+          h('div', {
+            class: 'h-2 overflow-hidden rounded-full bg-gray-200 dark:bg-gray-700',
+            role: 'progressbar',
+            'aria-label': props.label,
+            'aria-valuemin': 0,
+            'aria-valuemax': 100,
+            'aria-valuenow': props.value
+          }, [
             h('div', {
               class: ['h-full rounded-full', toneClass.value],
-              style: { width: `${props.value}%` }
+              style: { width: `${Math.max(0, Math.min(100, props.value))}%` }
             })
           ]),
           h('p', { class: 'mt-2 hidden text-sm text-gray-500 sm:block dark:text-gray-400' }, props.detail)
@@ -669,7 +677,7 @@ const PolicyRow = defineComponent({
         },
         [
           h('span', { class: 'text-sm text-gray-500 dark:text-gray-400' }, props.label),
-          h('span', { class: 'text-sm font-medium text-gray-900 dark:text-white' }, props.value)
+          h('span', { class: 'min-w-0 break-words text-right text-sm font-medium text-gray-900 dark:text-white' }, props.value)
         ]
       )
   }
diff --git a/src/views/manage/FileManageView.vue b/src/views/manage/FileManageView.vue
index 06ceb3c..cf1c1dd 100644
--- a/src/views/manage/FileManageView.vue
+++ b/src/views/manage/FileManageView.vue
@@ -21,7 +21,7 @@
         <div class="flex items-start justify-between gap-3">
           <div>
             <p class="text-xs sm:text-sm" :class="[mutedTextClass]">{{ card.label }}</p>
-            <p class="mt-1.5 truncate text-xl font-semibold tabular-nums sm:mt-2 sm:text-2xl" :class="[primaryTextClass]">
+            <p class="mt-1.5 break-words text-xl font-semibold leading-tight tabular-nums sm:mt-2 sm:text-2xl" :title="String(card.value)" :class="[primaryTextClass]">
               {{ card.value }}
             </p>
           </div>
@@ -58,7 +58,7 @@
             </template>
             {{ t('fileManage.resetFilters') }}
           </BaseButton>
-          <BaseButton variant="secondary" @click="isFilterPanelOpen = !isFilterPanelOpen">
+          <BaseButton variant="secondary" :aria-expanded="filterBodyVisible" aria-controls="file-filter-panel" @click="isFilterPanelOpen = !isFilterPanelOpen">
             <template #icon>
               <FilterIcon class="mr-2 h-4 w-4" />
             </template>
@@ -68,7 +68,7 @@
       </div>
 
       <Transition name="fcb-expand-120">
-        <div v-if="filterBodyVisible" class="fcb-expand-content mt-4 grid gap-4">
+        <div id="file-filter-panel" v-if="filterBodyVisible" class="fcb-expand-content mt-4 grid gap-4">
         <div class="flex flex-col gap-3 lg:flex-row lg:items-center">
           <label class="min-w-0 flex-1">
             <span class="sr-only">{{ t('fileManage.searchPlaceholder') }}</span>
@@ -331,15 +331,9 @@
               </div>
             </button>
           </div>
-          <div class="mt-3 grid grid-cols-3 gap-2 pl-14">
-            <button type="button" class="flex min-h-11 items-center justify-center rounded-lg border text-sm font-medium" :class="detailActionClass" @click="openFileDetail(file)">
-              <FileTextIcon class="mr-1.5 h-4 w-4" />{{ t('fileManage.detail') }}
-            </button>
-            <button type="button" class="flex min-h-11 items-center justify-center rounded-lg border text-sm font-medium" :class="detailActionClass" :disabled="Boolean(downloadingFileId)" @click="downloadFile(file)">
-              <DownloadIcon class="mr-1.5 h-4 w-4" />{{ file.isTextFile ? t('fileManage.exportText') : t('fileManage.downloadFile') }}
-            </button>
-            <button type="button" class="flex min-h-11 items-center justify-center rounded-lg border text-sm font-medium" :class="detailActionClass" @click="openEditModal(file)">
-              <PencilIcon class="mr-1.5 h-4 w-4" />{{ t('common.edit') }}
+          <div class="mt-3 pl-14">
+            <button type="button" class="flex min-h-11 w-full items-center justify-center rounded-lg border text-sm font-medium" :class="detailActionClass" @click="openFileDetail(file)">
+              <FileTextIcon class="mr-1.5 h-4 w-4" aria-hidden="true" />{{ t('fileManage.detail') }}
             </button>
           </div>
         </article>
@@ -357,7 +351,7 @@
     </section>
 
     <div class="hidden md:block">
-    <DataTable :title="t('fileManage.allFiles')" :headers="fileTableHeaders">
+    <DataTable :title="t('fileManage.allFiles')" :headers="fileTableHeaders" table-class="min-w-[1120px]">
       <template #actions>
         <BaseButton variant="secondary" :loading="isLoading" @click="refreshFileList">
           <template #icon>
@@ -702,7 +696,7 @@
           刷新历史
         </BaseButton>
       </div>
-      <div class="overflow-x-auto">
+      <div class="overflow-x-auto" tabindex="0" role="region" :aria-label="t('fileManage.history.title')">
         <table
           class="min-w-full divide-y"
           :class="[isDarkMode ? 'divide-gray-700' : 'divide-gray-200']"
diff --git a/src/views/manage/SystemSettingsView.vue b/src/views/manage/SystemSettingsView.vue
index acc8f6f..065b40a 100644
--- a/src/views/manage/SystemSettingsView.vue
+++ b/src/views/manage/SystemSettingsView.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
-import { inject, onMounted } from 'vue'
+import { inject, onMounted, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
-import { RefreshCwIcon, SaveIcon } from 'lucide-vue-next'
+import { EyeIcon, EyeOffIcon, RefreshCwIcon, SaveIcon } from 'lucide-vue-next'
 import BaseButton from '@/components/common/BaseButton.vue'
 import SettingNumberInput from '@/components/common/SettingNumberInput.vue'
 import SettingSwitch from '@/components/common/SettingSwitch.vue'
@@ -9,6 +9,7 @@ import { useSystemConfig } from '@/composables'
 
 const isDarkMode = inject('isDarkMode')
 const { t } = useI18n()
+const showAdminPassword = ref(false)
 const {
   config,
   isRefreshing,
@@ -23,13 +24,20 @@ const {
   toggleConfigFlag
 } = useSystemConfig()
 
+const scrollToSection = (section: string) => {
+  document.getElementById(`settings-${section}`)?.scrollIntoView({
+    behavior: window.matchMedia('(prefers-reduced-motion: reduce)').matches ? 'auto' : 'smooth',
+    block: 'start'
+  })
+}
+
 onMounted(() => {
   void refreshConfig()
 })
 </script>
 
 <template>
-  <div class="p-6">
+  <div class="p-4 pb-28 sm:p-6 sm:pb-28">
     <div
       class="mb-6 flex flex-col gap-3 lg:flex-row lg:items-end lg:justify-between"
     >
@@ -68,8 +76,29 @@ onMounted(() => {
       </div>
     </div>
 
+    <nav
+      class="mb-4 flex gap-2 overflow-x-auto pb-2"
+      :aria-label="t('manage.settings.sectionNavigation')"
+    >
+      <button
+        v-for="section in [
+          ['general', t('manage.settings.basicSettings')],
+          ['storage', t('manage.settings.storageSettings')],
+          ['upload', t('manage.settings.uploadLimits')],
+          ['access', t('manage.settings.errorLimits')]
+        ]"
+        :key="section[0]"
+        type="button"
+        class="inline-flex min-h-11 shrink-0 items-center rounded-full border px-4 text-sm font-medium"
+        :class="isDarkMode ? 'border-[#40545c] bg-[#263941] text-[#d8e3e5]' : 'border-[#c8d8dc] bg-[#edf4f5] text-[#415d66]'"
+        @click="scrollToSection(section[0])"
+      >
+        {{ section[1] }}
+      </button>
+    </nav>
+
     <div
-      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="theme-2026-card theme-2026-card-hover mx-auto max-w-6xl space-y-8 rounded-[24px] border p-4 shadow-md transition-all duration-200 hover:shadow-lg sm:rounded-[30px] sm:p-6"
       :class="[
         isDarkMode
           ? 'border-[#40545c] bg-[#202f36]/90 hover:border-[#7199a8] hover:bg-[#263941] hover:shadow-black/25'
@@ -77,7 +106,7 @@ onMounted(() => {
       ]"
     >
       <!-- 基本设置 -->
-      <section class="space-y-4">
+      <section id="settings-general" class="scroll-mt-4 space-y-4">
         <h3 class="text-lg font-medium mb-4" :class="[isDarkMode ? 'text-white' : 'text-gray-800']">
           {{ t('admin.settings.basicSettings') }}
         </h3>
@@ -92,8 +121,10 @@ onMounted(() => {
               {{ t('admin.settings.siteName') }}
             </label>
             <input
+              id="settings-site-name"
               type="text"
               v-model="config.name"
+              :aria-label="t('admin.settings.siteName')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -111,8 +142,10 @@ onMounted(() => {
               {{ t('admin.settings.websiteDescription') }}
             </label>
             <input
+              id="settings-description"
               type="text"
               v-model="config.description"
+              :aria-label="t('admin.settings.websiteDescription')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -131,24 +164,35 @@ onMounted(() => {
             </label>
             <div class="relative">
               <input
-                type="password"
+                id="settings-admin-password"
+                :type="showAdminPassword ? 'text' : 'password'"
                 minlength="6"
                 v-model="config.admin_token"
                 :placeholder="t('admin.settings.passwordPlaceholder')"
-                class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
+                autocomplete="new-password"
+                aria-describedby="settings-admin-password-note"
+                :aria-label="t('admin.settings.adminPassword')"
+                class="w-full rounded-md border px-4 py-2.5 pr-14 shadow-sm outline-none transition-all duration-200 ease-in-out focus:border-indigo-500 focus:ring-2 focus:ring-indigo-500"
                 :class="[
                   isDarkMode
                     ? 'bg-gray-700 border-gray-600 text-white placeholder-gray-400 hover:border-gray-500'
                     : 'border-gray-300 hover:border-gray-400 placeholder-gray-500'
                 ]"
               />
-              <div
-                class="absolute inset-y-0 right-0 flex items-center pr-3 text-sm text-gray-400"
-                :class="[isDarkMode ? 'text-gray-500' : 'text-gray-400']"
+              <button
+                type="button"
+                class="absolute inset-y-0 right-1 flex w-11 items-center justify-center rounded-lg"
+                :aria-label="showAdminPassword ? t('common.hidePassword') : t('common.showPassword')"
+                :title="showAdminPassword ? t('common.hidePassword') : t('common.showPassword')"
+                @click="showAdminPassword = !showAdminPassword"
               >
-                <span class="text-xs">{{ t('admin.settings.passwordNote') }}</span>
-              </div>
+                <EyeOffIcon v-if="showAdminPassword" class="h-5 w-5" aria-hidden="true" />
+                <EyeIcon v-else class="h-5 w-5" aria-hidden="true" />
+              </button>
             </div>
+            <p id="settings-admin-password-note" class="text-xs" :class="isDarkMode ? 'text-gray-300' : 'text-gray-600'">
+              {{ t('admin.settings.passwordNote') }}
+            </p>
           </div>
 
           <div class="space-y-2">
@@ -159,8 +203,10 @@ onMounted(() => {
               {{ t('admin.settings.keywords') }}
             </label>
             <input
+              id="settings-keywords"
               type="text"
               v-model="config.keywords"
+              :aria-label="t('admin.settings.keywords')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -179,7 +225,9 @@ onMounted(() => {
               {{ t('manage.settings.themeSelection') }}
             </label>
             <select
+              id="settings-theme"
               v-model="config.themesSelect"
+              :aria-label="t('manage.settings.themeSelection')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border appearance-none bg-no-repeat bg-right focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none cursor-pointer"
               :class="[
                 isDarkMode
@@ -203,8 +251,10 @@ onMounted(() => {
               {{ t('manage.settings.robotsFile') }}
             </label>
             <textarea
+              id="settings-robots"
               v-model="config.robotsText"
-              rows="3"
+              :aria-label="t('manage.settings.robotsFile')"
+              rows="5"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border resize-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -227,6 +277,7 @@ onMounted(() => {
             <input
               type="text"
               v-model="config.notify_title"
+              :aria-label="t('manage.settings.notificationTitle')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -245,6 +296,7 @@ onMounted(() => {
             </label>
             <textarea
               v-model="config.notify_content"
+              :aria-label="t('manage.settings.notificationContent')"
               rows="3"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border resize-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
@@ -257,7 +309,7 @@ onMounted(() => {
         </div>
 
         <!-- 存储设置 -->
-        <div class="space-y-4">
+        <div id="settings-storage" class="scroll-mt-4 space-y-4 border-t pt-8" :class="isDarkMode ? 'border-gray-700' : 'border-gray-200'">
           <h3
             class="text-lg font-medium mb-4"
             :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
@@ -276,6 +328,7 @@ onMounted(() => {
               type="text"
               :placeholder="t('manage.settings.storagePathPlaceholder')"
               v-model="config.storage_path"
+              :aria-label="t('manage.settings.storagePath')"
               class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
               :class="[
                 isDarkMode
@@ -295,6 +348,7 @@ onMounted(() => {
               </label>
               <select
                 v-model="config.file_storage"
+                :aria-label="t('manage.settings.storageMethod')"
                 class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border appearance-none bg-no-repeat bg-right focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none cursor-pointer"
                 :class="[
                   isDarkMode
@@ -331,6 +385,7 @@ onMounted(() => {
                   type="text"
                   :placeholder="t('manage.settings.webdavUrlPlaceholder')"
                   v-model="config.webdav_url"
+                  :aria-label="'WebDAV URL'"
                   class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                   :class="[
                     isDarkMode
@@ -351,6 +406,7 @@ onMounted(() => {
                     type="text"
                     :placeholder="t('manage.settings.webdavUsernamePlaceholder')"
                     v-model="config.webdav_username"
+                    :aria-label="'WebDAV Username'"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -371,6 +427,7 @@ onMounted(() => {
                     type="password"
                     :placeholder="t('manage.settings.webdavPasswordPlaceholder')"
                     v-model="config.webdav_password"
+                    :aria-label="'WebDAV Password'"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -394,6 +451,7 @@ onMounted(() => {
                   <input
                     type="text"
                     v-model="config.s3_access_key_id"
+                  :aria-label="t('manage.settings.s3AccessKeyId')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -413,6 +471,7 @@ onMounted(() => {
                   <input
                     type="password"
                     v-model="config.s3_secret_access_key"
+                  :aria-label="t('manage.settings.s3SecretAccessKey')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -432,6 +491,7 @@ onMounted(() => {
                   <input
                     type="text"
                     v-model="config.s3_bucket_name"
+                  :aria-label="t('manage.settings.s3BucketName')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -451,6 +511,7 @@ onMounted(() => {
                   <input
                     type="text"
                     v-model="config.s3_endpoint_url"
+                  :aria-label="t('manage.settings.s3EndpointUrl')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -470,6 +531,7 @@ onMounted(() => {
                   <input
                     type="text"
                     v-model="config.s3_region_name"
+                  :aria-label="t('manage.settings.s3RegionName')"
                     :placeholder="t('manage.settings.autoPlaceholder')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
@@ -489,6 +551,7 @@ onMounted(() => {
                   </label>
                   <select
                     v-model="config.s3_signature_version"
+                  :aria-label="t('manage.settings.s3SignatureVersion')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -511,6 +574,7 @@ onMounted(() => {
                   <input
                     type="text"
                     v-model="config.s3_hostname"
+                  :aria-label="t('manage.settings.s3Hostname')"
                     class="w-full rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                     :class="[
                       isDarkMode
@@ -541,7 +605,7 @@ onMounted(() => {
         </div>
 
         <!-- 上传限制 -->
-        <div class="mt-8">
+        <div id="settings-upload" class="scroll-mt-4 border-t pt-8" :class="isDarkMode ? 'border-gray-700' : 'border-gray-200'">
           <h3
             class="text-lg font-medium mb-4"
             :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
@@ -573,6 +637,7 @@ onMounted(() => {
                 <input
                   type="number"
                   v-model="fileSize"
+                  :aria-label="t('manage.settings.fileSizeLimit')"
                   class="w-24 rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                   :class="[
                     isDarkMode
@@ -582,6 +647,7 @@ onMounted(() => {
                 />
                 <select
                   v-model="sizeUnit"
+                  :aria-label="t('manage.settings.fileSizeUnit')"
                   class="rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                   :class="[
                     isDarkMode
@@ -644,6 +710,7 @@ onMounted(() => {
                 <input
                   type="number"
                   v-model="saveTime"
+                  :aria-label="t('manage.settings.maxSaveTime')"
                   class="w-24 rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                   :class="[
                     isDarkMode
@@ -653,6 +720,7 @@ onMounted(() => {
                 />
                 <select
                   v-model="saveTimeUnit"
+                  :aria-label="t('manage.settings.timeUnit')"
                   class="rounded-md shadow-sm px-4 py-2.5 transition-all duration-200 ease-in-out border focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 outline-none"
                   :class="[
                     isDarkMode
@@ -679,7 +747,7 @@ onMounted(() => {
         </div>
 
         <!-- 错误限制 -->
-        <div class="mt-8">
+        <div id="settings-access" class="scroll-mt-4 border-t pt-8" :class="isDarkMode ? 'border-gray-700' : 'border-gray-200'">
           <h3
             class="text-lg font-medium mb-4"
             :class="[isDarkMode ? 'text-white' : 'text-gray-800']"
@@ -703,6 +771,33 @@ onMounted(() => {
         </div>
       </section>
     </div>
+
+    <div
+      class="fixed inset-x-0 bottom-0 z-40 border-t px-4 py-3 backdrop-blur-xl lg:left-64"
+      :class="isDarkMode ? 'border-[#31454d] bg-[#17252b]/95' : 'border-[#c8d7da] bg-[#f2f6f5]/95'"
+      role="status"
+      aria-live="polite"
+    >
+      <div class="mx-auto flex max-w-6xl flex-wrap items-center justify-between gap-3">
+        <p class="text-sm font-medium" :class="isDirty ? 'text-amber-600 dark:text-amber-300' : isDarkMode ? 'text-gray-300' : 'text-[#415d66]'">
+          {{ isDirty ? t('manage.settings.unsavedChanges') : t('manage.settings.allChangesSaved') }}
+        </p>
+        <div class="flex items-center gap-2">
+          <BaseButton
+            variant="secondary"
+            :loading="isRefreshing"
+            :disabled="isSaving || isDirty"
+            @click="refreshConfig"
+          >
+            {{ t('manage.settings.reloadSaved') }}
+          </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>
+      </div>
+    </div>
   </div>
 </template>
 <style scoped>