frontend: FE-031 弹窗统一macOS Sheet风格，顶部锚定下滑出场+分层阴影

Co-authored-by: Cursor <cursoragent@cursor.com>

mactfsui/app/components/ui/dialog.tsx

@@ -37,7 +37,7 @@ function DialogOverlay({
     <DialogPrimitive.Overlay
       data-slot="dialog-overlay"
       className={cn(
-        "fixed inset-0 isolate z-50 bg-black/10 duration-100 supports-backdrop-filter:backdrop-blur-xs data-open:animate-in data-open:fade-in-0 data-closed:animate-out data-closed:fade-out-0",
+        "fixed inset-0 isolate z-50 bg-black/20 duration-200 supports-backdrop-filter:backdrop-blur-xs data-open:animate-in data-open:fade-in-0 data-closed:animate-out data-closed:fade-out-0 data-closed:duration-150",
         className
       )}
       {...props}
@@ -59,7 +59,7 @@ function DialogContent({
       <DialogPrimitive.Content
         data-slot="dialog-content"
         className={cn(
-          "fixed top-1/2 left-1/2 z-50 grid w-full max-w-[calc(100%-2rem)] -translate-x-1/2 -translate-y-1/2 gap-4 rounded-xl bg-popover p-4 text-sm text-popover-foreground ring-1 ring-foreground/10 duration-100 outline-none sm:max-w-sm data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
+          "ease-spring fixed top-12 left-1/2 z-50 grid w-full max-w-[calc(100%-2rem)] -translate-x-1/2 gap-4 rounded-xl border bg-popover p-4 text-sm text-popover-foreground shadow-dialog duration-200 outline-none sm:max-w-sm data-open:animate-in data-open:fade-in-0 data-open:slide-in-from-top-6 data-closed:animate-out data-closed:fade-out-0 data-closed:slide-out-to-top-4 data-closed:duration-150 data-closed:ease-out",
           className
         )}
         {...props}
@@ -128,7 +128,7 @@ function DialogTitle({
     <DialogPrimitive.Title
       data-slot="dialog-title"
       className={cn(
-        "font-heading text-base leading-none font-medium",
+        "font-heading text-base leading-none font-semibold tracking-tight",
         className
       )}
       {...props}