修复非桌面端布局遮罩层的遮挡状态；修复后台首页组件渲染问题

src/app/admin/_client/layout.tsx

@@ -49,10 +49,11 @@ export default function Layout(props: AdminLayoutProps) {
           <rect width="100%" height="100%" className="fill-card" mask="url(#top-left-rounded-mask)"/>
         </svg>
 
+        {/* 遮罩层 */}
         <div
           data-expand={navbar}
           className={merge(
-            `md:hidden`,
+            `lg:hidden`,
             `transition-opacity duration-300 ease-in-out`,
             `col-start-1 row-start-1 col-span-2 row-span-2 bg-black/50 z-10`,
             `data-[expand=true]:opacity-100 data-[expand=false]:opacity-0`,