✨ 优化 2026 前端无障碍与响应式体验

完善 2026 主题的移动端与桌面端交互体验，修复多项可访问性和信息展示问题。

- 允许浏览器缩放，补充焦点样式、按钮名称、表单标签和对话框键盘焦点管理\n- 支持 reduced-motion，扩大公共页、后台导航、记录列表和分页控件的触控区域\n- 优化系统设置分区导航、密码显示、字段语义和底部粘性保存栏\n- 压缩移动文件列表操作区，改善桌面表格滚动可达性和统计值截断\n- 优化仪表盘指标、趋势摘要、进度条语义及中英文文案

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>