diff --git a/app/components/PcFundTable.jsx b/app/components/PcFundTable.jsx
index fe2c386..8b981d6 100644
--- a/app/components/PcFundTable.jsx
+++ b/app/components/PcFundTable.jsx
@@ -34,7 +34,7 @@ import {
   DialogHeader,
   DialogTitle,
 } from '@/components/ui/dialog';
-import { DragIcon, ExitIcon, SettingsIcon, StarIcon, TrashIcon, ResetIcon } from './Icons';
+import { CloseIcon, DragIcon, ExitIcon, SettingsIcon, StarIcon, TrashIcon, ResetIcon } from './Icons';
 
 const NON_FROZEN_COLUMN_IDS = [
   'yesterdayChangePercent',
@@ -1167,13 +1167,22 @@ export default function PcFundTable({
       >
         <DialogContent
           className="sm:max-w-2xl max-h-[88vh] flex flex-col p-0 overflow-hidden"
-          showCloseButton
+          showCloseButton={false}
           onPointerDownOutside={blockDialogClose ? (e) => e.preventDefault() : undefined}
         >
           <DialogHeader className="flex-shrink-0 flex flex-row items-center justify-between gap-2 space-y-0 px-6 pb-4 pt-6 text-left border-b border-[var(--border)]">
             <DialogTitle className="text-base font-semibold text-[var(--text)]">
               基金详情
             </DialogTitle>
+            <button
+              type="button"
+              className="icon-button rounded-lg"
+              aria-label="关闭"
+              onClick={() => setCardDialogRow(null)}
+              style={{ padding: 4, borderColor: 'transparent' }}
+            >
+              <CloseIcon width="20" height="20" />
+            </button>
           </DialogHeader>
           <div
             className="flex-1 min-h-0 overflow-y-auto px-6 py-4"
diff --git a/components/ui/dialog.jsx b/components/ui/dialog.jsx
index b6019aa..e918bb3 100644
--- a/components/ui/dialog.jsx
+++ b/components/ui/dialog.jsx
@@ -56,25 +56,23 @@ function DialogContent({
   return (
     <DialogPortal data-slot="dialog-portal">
       <DialogOverlay className={overlayClassName} style={overlayStyle} />
-      <div className="fixed inset-0 z-50 flex items-center justify-center p-4">
-        <DialogPrimitive.Content
-          data-slot="dialog-content"
-          className={cn(
-            "relative w-full max-w-[calc(100%-2rem)] rounded-[16px] border border-[var(--border)] text-[var(--foreground)] p-6 dialog-content-shadow outline-none duration-200 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[state=open]:animate-in data-[state=open]:fade-in-0 data-[state=open]:zoom-in-95 sm:max-w-lg",
-            className
-          )}
-          {...props}>
-          {children}
-          {showCloseButton && (
-            <DialogPrimitive.Close
-              data-slot="dialog-close"
-              className="absolute top-4 right-4 rounded-md p-1.5 text-[var(--muted-foreground)] opacity-70 transition-colors duration-200 hover:opacity-100 hover:text-[var(--foreground)] hover:bg-[var(--secondary)] focus:outline-none focus-visible:ring-2 focus-visible:ring-[var(--ring)] focus-visible:ring-offset-2 focus-visible:ring-offset-[var(--card)] disabled:pointer-events-none cursor-pointer [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4">
-              <XIcon />
-              <span className="sr-only">Close</span>
-            </DialogPrimitive.Close>
-          )}
-        </DialogPrimitive.Content>
-      </div>
+      <DialogPrimitive.Content
+        data-slot="dialog-content"
+        className={cn(
+          "fixed top-[50%] left-[50%] z-50 w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-[16px] border border-[var(--border)] text-[var(--foreground)] p-6 dialog-content-shadow outline-none duration-200 data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=closed]:zoom-out-95 data-[state=open]:animate-in data-[state=open]:fade-in-0 data-[state=open]:zoom-in-95 sm:max-w-lg",
+          className
+        )}
+        {...props}>
+        {children}
+        {showCloseButton && (
+          <DialogPrimitive.Close
+            data-slot="dialog-close"
+            className="absolute top-4 right-4 rounded-md p-1.5 text-[var(--muted-foreground)] opacity-70 transition-colors duration-200 hover:opacity-100 hover:text-[var(--foreground)] hover:bg-[var(--secondary)] focus:outline-none focus-visible:ring-2 focus-visible:ring-[var(--ring)] focus-visible:ring-offset-2 focus-visible:ring-offset-[var(--card)] disabled:pointer-events-none cursor-pointer [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4">
+            <XIcon />
+            <span className="sr-only">Close</span>
+          </DialogPrimitive.Close>
+        )}
+      </DialogPrimitive.Content>
     </DialogPortal>
   );
 }