diff --git a/com.twin.app.shoptime/src/App/App.js b/com.twin.app.shoptime/src/App/App.js
index a52e5f09..91e499b9 100644
--- a/com.twin.app.shoptime/src/App/App.js
+++ b/com.twin.app.shoptime/src/App/App.js
@@ -46,6 +46,7 @@ import { enqueuePanelHistory } from '../actions/panelHistoryActions';
 import NotSupportedVersion from '../components/NotSupportedVersion/NotSupportedVersion';
 import ToastContainer from '../components/TToast/ToastContainer';
 import GlobalPopup from '../components/GlobalPopup/GlobalPopup';
+import FloatingGradientBackground from '../components/FloatingGradientBackground/FloatingGradientBackground';
 import usePrevious from '../hooks/usePrevious';
 import { lunaTest } from '../lunaSend/lunaTest';
 import { store } from '../store/store';
@@ -441,6 +442,9 @@ if (typeof Spotlight !== 'undefined' && Spotlight.addEventListener) {
 
 function AppBase(props) {
   const dispatch = useDispatch();
+
+  // 그라데이션 배경 표시 상태 관리 (기본적으로 숨김)
+  const [showGradientBackground, setShowGradientBackground] = React.useState(false);
   const httpHeader = useSelector((state) => state.common.httpHeader);
   const httpHeaderRef = useRef(httpHeader);
   const webOSVersion = useSelector((state) => state.common.appStatus.webOSVersion);
@@ -892,8 +896,24 @@ function AppBase(props) {
     );
   }, [dispatch, initService]);
 
+  // ✅ 그라데이션 배경 제어 함수를 전역에 노출
+  useEffect(() => {
+    window.toggleFloatingGradient = setShowGradientBackground;
+    window.showFloatingGradient = () => setShowGradientBackground(true);
+    window.hideFloatingGradient = () => setShowGradientBackground(false);
+
+    return () => {
+      delete window.toggleFloatingGradient;
+      delete window.showFloatingGradient;
+      delete window.hideFloatingGradient;
+    };
+  }, []);
+
   return (
     <ErrorBoundary>
+      {/* 항상 메모리에 로드되는 떠 있는 그라데이션 배경 */}
+      <FloatingGradientBackground visible={showGradientBackground} />
+
       {webOSVersion === '' ? null : Number(webOSVersion) < 4 ? (
         <NotSupportedVersion />
       ) : (
diff --git a/com.twin.app.shoptime/src/actions/panelActions.js b/com.twin.app.shoptime/src/actions/panelActions.js
index 72bd8d59..e7d492a1 100644
--- a/com.twin.app.shoptime/src/actions/panelActions.js
+++ b/com.twin.app.shoptime/src/actions/panelActions.js
@@ -103,6 +103,12 @@ export const navigateToDetail = ({
       timestamp: Date.now(),
     });
 
+    // ✅ 그라데이션 배경 표시 - HomePanel→DetailPanel 전환 시
+    if (window.showFloatingGradient) {
+      window.showFloatingGradient();
+      console.log('[navigateToDetail] Floating gradient background shown');
+    }
+
     // sourceMenu에 따른 사전 처리
     switch (sourceMenu) {
       case SOURCE_MENUS.HOME_BEST_SELLER:
diff --git a/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.jsx b/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.jsx
new file mode 100644
index 00000000..72066e04
--- /dev/null
+++ b/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.jsx
@@ -0,0 +1,60 @@
+import React, { useCallback, useEffect, useRef } from 'react';
+import { createPortal } from 'react-dom';
+
+import css from './FloatingGradientBackground.module.less';
+
+/**
+ * HomePanel과 분리된 별도의 그라데이션 배경
+ * React Portal로 전역 body에 직접 렌더링됨
+ * 항상 메모리에 로드되지만 visible prop으로 표시/숨김 제어
+ */
+export default function FloatingGradientBackground({ visible = false }) {
+  // 전역 DOM에 렌더링할 container 참조
+  const containerRef = useRef(null);
+
+  // portal container 생성 (마운트 시 한 번만)
+  useEffect(() => {
+    // body에 직접 div 추가
+    const portalContainer = document.createElement('div');
+    portalContainer.id = 'floating-gradient-background-container';
+    portalContainer.style.position = 'fixed';
+    portalContainer.style.top = '0';
+    portalContainer.style.left = '0';
+    portalContainer.style.width = '100%';
+    portalContainer.style.height = '100%';
+    portalContainer.style.pointerEvents = 'none';
+    portalContainer.style.zIndex = '20'; // HomePanel과 DetailPanel 사이 (HomePanel < 20 < DetailPanel(21))
+
+    document.body.appendChild(portalContainer);
+    containerRef.current = portalContainer;
+
+    console.log('[FloatingGradientBackground] Portal container created');
+
+    return () => {
+      // 언마운트 시 portal container 제거
+      if (containerRef.current && containerRef.current.parentNode) {
+        containerRef.current.parentNode.removeChild(containerRef.current);
+        console.log('[FloatingGradientBackground] Portal container removed');
+      }
+    };
+  }, []);
+
+  // Portal로 렌더링될 그라데이션 컴포넌트
+  const gradientContent = (
+    <div className={`${css.gradientBackground} ${visible ? css.visible : ''}`} aria-hidden="true">
+      {/* 1. 270도 방향 그라데이션 (왼쪽→오른쪽, 투명→불투명) */}
+      <div className={css.gradientLayer1} />
+      {/* 2. 180도 방향 그라데이션 (위→아래, 투명→불투명) */}
+      <div className={css.gradientLayer2} />
+      {/* 3. 투명 그라데이션 */}
+      <div className={css.gradientLayer3} />
+    </div>
+  );
+
+  // container가 준비되면 portal로 렌더링
+  if (!containerRef.current) {
+    return null;
+  }
+
+  return createPortal(gradientContent, containerRef.current);
+}
\ No newline at end of file
diff --git a/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.module.less b/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.module.less
new file mode 100644
index 00000000..bc0ad129
--- /dev/null
+++ b/com.twin.app.shoptime/src/components/FloatingGradientBackground/FloatingGradientBackground.module.less
@@ -0,0 +1,65 @@
+@import "../../style/CommonStyle.module.less";
+@import "../../style/utils.module.less";
+
+// 그라데이션 배경 - 전역 body에 렌더링됨
+.gradientBackground {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  pointer-events: none; // 클릭 이벤트가 아래로 통과하도록
+
+  // 기본 상태에서는 숨김
+  display: none;
+
+  // 활성화 상태
+  &.visible {
+    display: block;
+  }
+}
+
+// 그라데이션 레이어 1: 270도 방향 (왼쪽→오른쪽, 투명→불투명)
+// linear-gradient(270deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.77) 70%, rgba(0, 0, 0, 1) 100%)
+.gradientLayer1 {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: linear-gradient(
+    270deg,
+    rgba(0, 0, 0, 0) 0%,
+    rgba(0, 0, 0, 0.77) 70%,
+    rgba(0, 0, 0, 1) 100%
+  );
+  z-index: 1; // container 내부 상대적 zIndex
+}
+
+// 그라데이션 레이어 2: 180도 방향 (위→아래, 투명→불투명)
+// linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%)
+.gradientLayer2 {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: linear-gradient(
+    180deg,
+    rgba(0, 0, 0, 0) 0%,
+    rgba(0, 0, 0, 1) 100%
+  );
+  z-index: 2; // gradientLayer1보다 높게
+}
+
+// 그라데이션 레이어 3: 투명 그라데이션
+// linear-gradient(0deg, rgba(0, 0, 0, 0))
+.gradientLayer3 {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  background: linear-gradient(0deg, rgba(0, 0, 0, 0));
+  z-index: 3; // 가장 높은 레이어
+}
\ No newline at end of file
diff --git a/com.twin.app.shoptime/src/views/DetailPanel/DetailPanel.jsx b/com.twin.app.shoptime/src/views/DetailPanel/DetailPanel.jsx
index ef42b5f5..e7fc1889 100644
--- a/com.twin.app.shoptime/src/views/DetailPanel/DetailPanel.jsx
+++ b/com.twin.app.shoptime/src/views/DetailPanel/DetailPanel.jsx
@@ -148,6 +148,21 @@ export default function DetailPanel({ panelInfo, isOnTop, spotlightId }) {
     };
   }, [dispatch]);
 
+  // ✅ DOM 렌더링 후 그라데이션 배경 숨기기 - HomePanel→DetailPanel 전환 완료 시
+  useEffect(() => {
+    // DOM이 렌더링된 후 약간의 지연 시간을 두고 그라데이션 숨김
+    const timer = setTimeout(() => {
+      if (window.hideFloatingGradient) {
+        window.hideFloatingGradient();
+        console.log('[DetailPanel] Floating gradient background hidden');
+      }
+    }, 100); // 100ms 지연으로 DOM 렌더링 완료 후 실행
+
+    return () => {
+      clearTimeout(timer); // 컴포넌트 언마운트 시 타이머 정리
+    };
+  }, []); // 마운트 시 한 번만 실행
+
   // ✅ [251118] DetailPanel이 사라질 때 HomePanel의 비디오 재생 활성화
   useEffect(() => {
     return () => {
diff --git a/com.twin.app.shoptime/src/views/DetailPanel/components/DetailPanelBackground/DetailPanelBackground.v2.jsx b/com.twin.app.shoptime/src/views/DetailPanel/components/DetailPanelBackground/DetailPanelBackground.v2.jsx
new file mode 100644
index 00000000..0eb653c0
--- /dev/null
+++ b/com.twin.app.shoptime/src/views/DetailPanel/components/DetailPanelBackground/DetailPanelBackground.v2.jsx
@@ -0,0 +1,230 @@
+// src/views/DetailPanel/components/DetailPanelBackground/DetailPanelBackground.v2.jsx
+import React, { useMemo, useCallback } from 'react';
+
+// 이미지 imports
+import hsn from '../../../../../assets/images/bg/hsn_new.png';
+import koreaKiosk from '../../../../../assets/images/bg/koreaKiosk_new.png';
+import lgelectronics from '../../../../../assets/images/bg/lgelectronics_new.png';
+import ontv4u from '../../../../../assets/images/bg/ontv4u_new.png';
+import Pinkfong from '../../../../../assets/images/bg/Pinkfong_new.png';
+import qvc from '../../../../../assets/images/bg/qvc_new.png';
+import shoplc from '../../../../../assets/images/bg/shoplc_new.png';
+import css from './DetailPanelBackground.module.less';
+
+// ==================== 로깅 함수들 ====================
+/**
+ * DetailPanelBackgroundV2 초기화 로그
+ * @param {number} patnrId - 파트너사 ID
+ * @param {boolean} visible - 표시 여부
+ * @param {string} imageUrl - 이미지 URL
+ */
+const logDetailPanelInit = (patnrId, visible, imageUrl) => {
+  console.log(`[DetailPanelBackgroundV2] patnrId: ${patnrId}, visible: ${visible}, imageUrl: ${imageUrl}`);
+};
+
+/**
+ * 이미지 로드 성공 로그
+ * @param {number} patnrId - 파트너사 ID
+ */
+const logImageLoaded = (patnrId) => {
+  console.log(`[DetailPanelBackgroundV2] Image loaded: patnrId=${patnrId}`);
+};
+
+/**
+ * 이미지 로드 실패 로그
+ * @param {number} patnrId - 파트너사 ID
+ * @param {Error} error - 에러 객체
+ */
+const logImageError = (patnrId, error) => {
+  console.error(`[DetailPanelBackgroundV2] Image load failed: patnrId=${patnrId}`, error);
+};
+
+/**
+ * 개선된 배경 이미지 컴포넌트 v2
+ * HomePanel에 미리 로드되어 메모리에 상주하며, visible props로 표시 여부만 제어
+ *
+ * @param {Object} props
+ * @param {number} props.patnrId - 파트너사 ID
+ * @param {boolean} props.visible - 표시 여부 (HomePanel이 isOnTop일 때 false)
+ * @param {boolean} props.launchedFromPlayer - PlayerPanel에서 진입했는지 여부
+ * @param {boolean} props.usePlaceholder - placeholder 표시 여부
+ */
+export default function DetailPanelBackgroundV2({
+  patnrId,
+  visible = true,
+  launchedFromPlayer = false,
+  usePlaceholder = false
+}) {
+  // 파트너사별 배경 이미지 맵
+  const BG_MAP = useMemo(() => ({
+    1: qvc,          // QVC
+    2: hsn,          // HSN
+    4: ontv4u,       // ONTV4U
+    9: lgelectronics,// LG ELECTRONICS
+    11: shoplc,      // SHOPLC
+    16: koreaKiosk,  // KOREA KIOSK
+    19: Pinkfong,    // PINKFONG
+  }), []);
+
+  const backgroundImageUrl = useMemo(() => {
+    return BG_MAP[patnrId] || qvc; // 기본값은 QVC
+  }, [patnrId, BG_MAP]);
+
+  // useCallback으로 메모이제이션된 핸들러
+  const handleImageLoad = useCallback(() => {
+    logImageLoaded(patnrId);
+  }, [patnrId]);
+
+  const handleImageError = useCallback((e) => {
+    logImageError(patnrId, e);
+  }, [patnrId]);
+
+  // 개발 환경에서만 로깅
+  if (process.env.NODE_ENV === 'development') {
+    // eslint-disable-next-line no-console
+    logDetailPanelInit(patnrId, visible, backgroundImageUrl);
+  }
+
+  return (
+    <div
+      className={css.backgroundContainerV2}
+      style={{
+        position: 'fixed',
+        top: 0,
+        left: 0,
+        width: '100vw',
+        height: '100vh',
+        zIndex: 50, // HomePanel(z-index: 1)보다 높고, DetailPanel(z-index: 100)보다 낮음
+        visibility: visible ? 'visible' : 'hidden',
+        opacity: visible ? 1 : 0,
+        transition: 'opacity 0.3s ease-in-out, visibility 0.3s ease-in-out',
+        pointerEvents: 'none',
+      }}
+    >
+      {/* PlayerPanel에서 진입한 경우 이미지를 표시하지 않고 그라데이션만 표시 */}
+      {launchedFromPlayer ? (
+        // 그라데이션 레이어들만 표시
+        <>
+          {/* 1. 270도 방향 그라데이션 (왼쪽→오른쪽, 투명→불투명) */}
+          <div
+            style={{
+              position: 'absolute',
+              top: 0,
+              left: 0,
+              width: '100%',
+              height: '100%',
+              background: 'linear-gradient(270deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.77) 70%, rgba(0, 0, 0, 1) 100%)',
+              zIndex: 3,
+            }}
+            aria-hidden="true"
+          />
+          {/* 2. 180도 방향 그라데이션 (위→아래, 투명→불투명) */}
+          <div
+            style={{
+              position: 'absolute',
+              top: 0,
+              left: 0,
+              width: '100%',
+              height: '100%',
+              background: 'linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%)',
+              zIndex: 4,
+            }}
+            aria-hidden="true"
+          />
+          {/* 3. 투명 그라데이션 */}
+          <div
+            style={{
+              position: 'absolute',
+              top: 0,
+              left: 0,
+              width: '100%',
+              height: '100%',
+              background: 'linear-gradient(0deg, rgba(0, 0, 0, 0))',
+              zIndex: 5,
+            }}
+            aria-hidden="true"
+          />
+        </>
+      ) : usePlaceholder ? (
+        // placeholder 모드
+        <div
+          className={css.backgroundPlaceholder}
+          style={{
+            position: 'absolute',
+            top: 0,
+            left: 0,
+            width: '100%',
+            height: '100%',
+            background: 'linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%)',
+            zIndex: 2,
+          }}
+        />
+      ) : (
+        // 실제 배경 이미지
+        <img
+          src={backgroundImageUrl}
+          alt=""
+          style={{
+            position: 'absolute',
+            top: 0,
+            left: 0,
+            width: '100%',
+            height: '100%',
+            objectFit: 'cover',
+            objectPosition: 'center',
+            zIndex: 2,
+          }}
+          aria-hidden="true"
+          onLoad={handleImageLoad}
+          onError={handleImageError}
+        />
+      )}
+    </div>
+  );
+}
+
+/**
+ * HomePanel에서 사용할 모든 배경 이미지 미리 로딩 컴포넌트
+ * HomePanel이 렌더링될 때 모든 파트너사 배경 이미지를 미리 로드하여 메모리에 상주시킴
+ */
+export function PreloadedBackgroundImages({
+  selectedPatnrId,
+  isHomePanelOnTop = true,
+  launchedFromPlayer = false
+}) {
+  // 모든 파트너사 ID 목록
+  const allPatnrIds = useMemo(() => [1, 2, 4, 9, 11, 16, 19], []);
+
+  // ✅ 원래 로직 복원: HomePanel이 onTop이 아니고 selectedPatnrId가 있을 때만 배경 표시
+  const shouldShowBackground = !isHomePanelOnTop && selectedPatnrId;
+
+  // ✅ 디버깅 로그 추가
+  useMemo(() => {
+    console.log('[PreloadedBackgroundImages] Debug info:', {
+      selectedPatnrId,
+      isHomePanelOnTop,
+      launchedFromPlayer,
+      shouldShowBackground,
+      allPatnrIds
+    });
+  }, [selectedPatnrId, isHomePanelOnTop, launchedFromPlayer, shouldShowBackground]);
+
+  return (
+    <>
+      {allPatnrIds.map((patnrId) => {
+        // ✅ 원래 로직: DetailPanel에서 선택된 patnrId와 일치하는 배경만 표시
+        const isVisible = shouldShowBackground && patnrId === selectedPatnrId;
+        console.log(`[PreloadedBackgroundImages] patnrId ${patnrId}, visible: ${isVisible}`);
+
+        return (
+          <DetailPanelBackgroundV2
+            key={`bg-${patnrId}`}
+            patnrId={patnrId}
+            visible={isVisible}
+            launchedFromPlayer={launchedFromPlayer}
+          />
+        );
+      })}
+    </>
+  );
+}
\ No newline at end of file
diff --git a/com.twin.app.shoptime/src/views/HomePanel/HomePanel.jsx b/com.twin.app.shoptime/src/views/HomePanel/HomePanel.jsx
index a9c610de..cb2df152 100644
--- a/com.twin.app.shoptime/src/views/HomePanel/HomePanel.jsx
+++ b/com.twin.app.shoptime/src/views/HomePanel/HomePanel.jsx
@@ -168,6 +168,7 @@ const HomePanel = ({ isOnTop }) => {
   const verticalPagenatorRef = useRef(null);
   const currentSentMenuRef = useRef(null);
 
+  
   // ✅ [251119] DetailPanelBackground 이미지 프리로딩
   // HomePanel 마운트 시 백그라운드로 모든 파트너사 배경 이미지를 미리 로드하여
   // DetailPanel 진입 시 로딩 지연을 방지함
diff --git a/com.twin.app.shoptime/src/views/HomePanel/HomePanel.module.less b/com.twin.app.shoptime/src/views/HomePanel/HomePanel.module.less
index 1d2c7007..2180e782 100644
--- a/com.twin.app.shoptime/src/views/HomePanel/HomePanel.module.less
+++ b/com.twin.app.shoptime/src/views/HomePanel/HomePanel.module.less
@@ -52,3 +52,4 @@
     top: 20px;
   }
 }
+