diff --git a/app/components/MobileFundCardDrawer.jsx b/app/components/MobileFundCardDrawer.jsx
new file mode 100644
index 0000000..f3f6435
--- /dev/null
+++ b/app/components/MobileFundCardDrawer.jsx
@@ -0,0 +1,83 @@
+'use client';
+
+import {
+  Drawer,
+  DrawerClose,
+  DrawerContent,
+  DrawerHeader,
+  DrawerTitle, DrawerTrigger,
+} from '@/components/ui/drawer';
+import FundCard from './FundCard';
+import { CloseIcon } from './Icons';
+
+/**
+ * 移动端基金详情底部 Drawer 弹框
+ *
+ * @param {Object} props
+ * @param {boolean} props.open - 是否打开
+ * @param {(open: boolean) => void} props.onOpenChange - 打开状态变化回调
+ * @param {boolean} [props.blockDrawerClose] - 是否禁止关闭（如上层有弹框时）
+ * @param {React.MutableRefObject<boolean>} [props.ignoreNextDrawerCloseRef] - 忽略下一次关闭（用于点击到内部 dialog 时）
+ * @param {Object|null} props.cardSheetRow - 当前选中的行数据，用于 getFundCardProps
+ * @param {(row: any) => Object} [props.getFundCardProps] - 根据行数据返回 FundCard 的 props
+ */
+export default function MobileFundCardDrawer({
+  open,
+  onOpenChange,
+  blockDrawerClose = false,
+  ignoreNextDrawerCloseRef,
+  cardSheetRow,
+  getFundCardProps,
+  children,
+}) {
+  return (
+    <Drawer
+      open={open}
+      onOpenChange={(nextOpen) => {
+        if (!nextOpen) {
+          if (ignoreNextDrawerCloseRef?.current) {
+            ignoreNextDrawerCloseRef.current = false;
+            return;
+          }
+          if (!blockDrawerClose) onOpenChange(false);
+        }
+      }}
+    >
+      <DrawerTrigger asChild>
+        {children}
+      </DrawerTrigger>
+      <DrawerContent
+        className="h-[77vh] max-h-[88vh] mt-0 flex flex-col"
+        onPointerDownOutside={(e) => {
+          if (blockDrawerClose) return;
+          if (e?.target?.closest?.('[data-slot="dialog-content"], [role="dialog"]')) {
+            if (ignoreNextDrawerCloseRef) ignoreNextDrawerCloseRef.current = true;
+            return;
+          }
+          onOpenChange(false);
+        }}
+      >
+        <DrawerHeader className="flex-shrink-0 flex flex-row items-center justify-between gap-2 space-y-0 px-5 pb-4 pt-2 text-left">
+          <DrawerTitle className="text-base font-semibold text-[var(--text)]">
+            基金详情
+          </DrawerTitle>
+          <DrawerClose
+            className="icon-button border-none bg-transparent p-1"
+            title="关闭"
+            style={{ borderColor: 'transparent', backgroundColor: 'transparent' }}
+          >
+            <CloseIcon width="20" height="20" />
+          </DrawerClose>
+        </DrawerHeader>
+        <div
+          className="flex-1 min-h-0 overflow-y-auto px-5 pb-8 pt-0"
+          style={{ paddingBottom: 'calc(24px + env(safe-area-inset-bottom, 0px))' }}
+        >
+          {cardSheetRow && getFundCardProps ? (
+            <FundCard {...getFundCardProps(cardSheetRow)} />
+          ) : null}
+        </div>
+      </DrawerContent>
+    </Drawer>
+  );
+}
diff --git a/app/components/MobileFundTable.jsx b/app/components/MobileFundTable.jsx
index 0eaf475..5e9fd74 100644
--- a/app/components/MobileFundTable.jsx
+++ b/app/components/MobileFundTable.jsx
@@ -24,17 +24,10 @@ import {
 } from '@dnd-kit/sortable';
 import { CSS } from '@dnd-kit/utilities';
 import { throttle } from 'lodash';
-import {
-  Drawer,
-  DrawerClose,
-  DrawerContent,
-  DrawerHeader,
-  DrawerTitle,
-} from '@/components/ui/drawer';
 import FitText from './FitText';
-import FundCard from './FundCard';
+import MobileFundCardDrawer from './MobileFundCardDrawer';
 import MobileSettingModal from './MobileSettingModal';
-import { CloseIcon, DragIcon, ExitIcon, SettingsIcon, SortIcon, StarIcon } from './Icons';
+import { DragIcon, ExitIcon, SettingsIcon, SortIcon, StarIcon } from './Icons';
 
 const MOBILE_NON_FROZEN_COLUMN_IDS = [
   'yesterdayChangePercent',
@@ -1082,51 +1075,14 @@ export default function MobileFundTable({
           />
         )}
 
-        <Drawer
+        <MobileFundCardDrawer
           open={!!(cardSheetRow && getFundCardProps)}
-          onOpenChange={(open) => {
-            if (!open) {
-              if (ignoreNextDrawerCloseRef.current) {
-                ignoreNextDrawerCloseRef.current = false;
-                return;
-              }
-              if (!blockDrawerClose) setCardSheetRow(null);
-            }
-          }}
-        >
-          <DrawerContent
-            className="h-[77vh] max-h-[88vh] mt-0 flex flex-col"
-            onPointerDownOutside={(e) => {
-              if (blockDrawerClose) return;
-              if (e?.target?.closest?.('[data-slot="dialog-content"], [role="dialog"]')) {
-                ignoreNextDrawerCloseRef.current = true;
-                return;
-              }
-              setCardSheetRow(null);
-            }}
-          >
-            <DrawerHeader className="flex-shrink-0 flex flex-row items-center justify-between gap-2 space-y-0 px-5 pb-4 pt-2 text-left">
-              <DrawerTitle className="text-base font-semibold text-[var(--text)]">
-                基金详情
-              </DrawerTitle>
-              <DrawerClose
-                className="icon-button border-none bg-transparent p-1"
-                title="关闭"
-                style={{ borderColor: 'transparent', backgroundColor: 'transparent' }}
-              >
-                <CloseIcon width="20" height="20" />
-              </DrawerClose>
-            </DrawerHeader>
-            <div
-              className="flex-1 min-h-0 overflow-y-auto px-5 pb-8 pt-0"
-              style={{ paddingBottom: 'calc(24px + env(safe-area-inset-bottom, 0px))' }}
-            >
-              {cardSheetRow && getFundCardProps ? (
-                <FundCard {...getFundCardProps(cardSheetRow)} />
-              ) : null}
-            </div>
-          </DrawerContent>
-        </Drawer>
+          onOpenChange={(open) => { if (!open) setCardSheetRow(null); }}
+          blockDrawerClose={blockDrawerClose}
+          ignoreNextDrawerCloseRef={ignoreNextDrawerCloseRef}
+          cardSheetRow={cardSheetRow}
+          getFundCardProps={getFundCardProps}
+        />
 
         {!onlyShowHeader && showPortalHeader && ReactDOM.createPortal(renderContent(true), document.body)}
       </div>
diff --git a/app/globals.css b/app/globals.css
index 4b6f46a..79a41cd 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -106,8 +106,10 @@
 
 html,
 body {
+  overscroll-behavior-y: none;
   height: 100%;
   overflow-x: clip;
+  will-change: auto; /* 或者移除任何 will-change: transform */
 }
 
 body {
diff --git a/app/page.jsx b/app/page.jsx
index 62b6c54..f34ef94 100644
--- a/app/page.jsx
+++ b/app/page.jsx
@@ -3356,13 +3356,13 @@ export default function HomePage() {
       isScanImporting;
 
     if (isAnyModalOpen) {
-      document.body.style.overflow = 'hidden';
+      containerRef.current.style.overflow = 'hidden';
     } else {
-      document.body.style.overflow = '';
+      containerRef.current.style.overflow = '';
     }
 
     return () => {
-      document.body.style.overflow = '';
+      containerRef.current.style.overflow = '';
     };
   }, [
     settingsOpen,
diff --git a/components/ui/drawer.jsx b/components/ui/drawer.jsx
index aa95895..e9c15f8 100644
--- a/components/ui/drawer.jsx
+++ b/components/ui/drawer.jsx
@@ -5,6 +5,50 @@ import { Drawer as DrawerPrimitive } from "vaul"
 
 import { cn } from "@/lib/utils"
 
+const DrawerScrollLockContext = React.createContext(null)
+
+/**
+ * 移动端滚动锁定：仅将 body 设为 position:fixed，用负值 top 把页面“拉”回当前视口位置，
+ * 既锁定滚动又保留视觉位置；overlay 上 ontouchmove preventDefault 防止背景触摸滚动。
+ */
+function useScrollLock(open) {
+  const savedScrollYRef = React.useRef(0)
+  const onOverlayTouchMove = React.useCallback((e) => {
+    e.preventDefault()
+  }, [])
+
+  React.useEffect(() => {
+    if (!open || typeof document === "undefined") return
+    const scrollY = window.scrollY ?? window.pageYOffset
+    savedScrollYRef.current = scrollY
+    const prev = {
+      position: document.body.style.position,
+      top: document.body.style.top,
+      left: document.body.style.left,
+      right: document.body.style.right,
+      width: document.body.style.width,
+    }
+    document.body.style.position = "fixed"
+    document.body.style.top = `-${scrollY}px`
+    document.body.style.left = "0"
+    document.body.style.right = "0"
+    document.body.style.width = "100%"
+    return () => {
+      document.body.style.position = prev.position
+      document.body.style.top = prev.top
+      document.body.style.left = prev.left
+      document.body.style.right = prev.right
+      document.body.style.width = prev.width
+      window.scrollTo(0, savedScrollYRef.current)
+    }
+  }, [open])
+
+  return React.useMemo(
+    () => (open ? { onTouchMove: onOverlayTouchMove } : null),
+    [open, onOverlayTouchMove]
+  )
+}
+
 function parseVhToPx(vhStr) {
   if (typeof vhStr === "number") return vhStr
   const match = String(vhStr).match(/^([\d.]+)\s*vh$/)
@@ -12,10 +56,17 @@ function parseVhToPx(vhStr) {
   return (window.innerHeight * Number(match[1])) / 100
 }
 
-function Drawer({
-  ...props
-}) {
-  return <DrawerPrimitive.Root data-slot="drawer" {...props} />;
+function Drawer({ open, ...props }) {
+  const scrollLock = useScrollLock(open)
+  const contextValue = React.useMemo(
+    () => ({ ...scrollLock, open: !!open }),
+    [scrollLock, open]
+  )
+  return (
+    <DrawerScrollLockContext.Provider value={contextValue}>
+      <DrawerPrimitive.Root modal={false} data-slot="drawer" open={open} {...props} />
+    </DrawerScrollLockContext.Provider>
+  )
 }
 
 function DrawerTrigger({
@@ -40,14 +91,26 @@ function DrawerOverlay({
   className,
   ...props
 }) {
+  const ctx = React.useContext(DrawerScrollLockContext)
+  const { open = false, ...scrollLockProps } = ctx || {}
+  // modal={false} 时 vaul 不渲染/隐藏 Overlay，用自定义遮罩 div 保证始终有遮罩；点击遮罩关闭
   return (
-    <DrawerPrimitive.Overlay
-      data-slot="drawer-overlay"
-      className={cn(
-        "fixed inset-0 z-50 bg-[var(--drawer-overlay)] backdrop-blur-[4px] data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:animate-in data-[state=open]:fade-in-0",
-        className
-      )}
-      {...props} />
+    <DrawerPrimitive.Close asChild>
+      <div
+        data-slot="drawer-overlay"
+        data-state={open ? "open" : "closed"}
+        role="button"
+        tabIndex={-1}
+        aria-label="关闭"
+        className={cn(
+          "fixed inset-0 z-50 cursor-default bg-[var(--drawer-overlay,rgba(0,0,0,0.45))] backdrop-blur-[6px]",
+          "data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:animate-in data-[state=open]:fade-in-0",
+          className
+        )}
+        {...scrollLockProps}
+        {...props}
+      />
+    </DrawerPrimitive.Close>
   );
 }