diff --git a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx
index 30c5f3f3..68054800 100644
--- a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx
+++ b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx
@@ -134,6 +134,15 @@ const BuyNowContainer = SpotlightContainerDecorator(
   'div'
 );
 
+const ButtonStackContainer = SpotlightContainerDecorator(
+  {
+    spotlightDirection: 'vertical',
+    enterTo: 'last-focused',
+    restrict: 'self-only',
+  },
+  'div'
+);
+
 const SpottableComponent = Spottable('div');
 
 const getProductData = curry((productType, themeProductInfo, productInfo) =>
@@ -948,6 +957,11 @@ export default function ProductAllSection({
     []
   );
 
+  const stackDefaultElement = useMemo(
+    () => shopByMobileId || firstStackElementId,
+    [shopByMobileId, firstStackElementId]
+  );
+
   // 버튼 스택(위→아래) 구성: 실제 렌더링 순서에 맞춰 행(row) 단위로 설정
   const { focusDownMap, focusUpMap, focusOrder, focusRows } = useMemo(() => {
     const rows = [];
@@ -1166,6 +1180,7 @@ export default function ProductAllSection({
       });
     }
   }, [focusRows]);
+  const firstStackElementId = focusRows[0]?.[0];
   const scrollPositionRef = useRef(0);
   const prevScrollPositionRef = useRef(0); // 이전 스크롤 위치 추적
   const prevScrollTopRef = useRef(0); // HomePanel 스타일 스크롤 위치 추적
@@ -1491,100 +1506,106 @@ export default function ProductAllSection({
                 </div>
               </ProductOverview>
 
-              {userNumber &&
-                promotions.map((promotion, idx) => {
-                  const couponButtonId = `detail-coupon-button-${idx}`;
-                  return (
-                    <div className={css.couponContainer} key={idx}>
-                      <div className={css.couponTitleText}>
-                        <div className={css.firstTitle}>SPECIAL PROMOTION</div>
-                        <div className={css.secondTitle}>
-                          Coupon only applicable to this product!
-                        </div>
-                      </div>
-                      <TButton
-                        spotlightId={couponButtonId}
-                        className={css.couponButton}
-                        onClick={() => {
-                          handleCouponClick(idx, promotion);
-                        }}
-                        onSpotlightUp={handleSpotlightUpFromCouponButtons}
-                        onSpotlightDown={(e) => handleSpotlightDownFromCoupon(e, couponButtonId)}
-                        data-spotlight-next-down={focusDownMap[couponButtonId]}
-                        size="detail_very_small"
-                      >
-                        <div className={css.couponText}>COUPON</div>
-                        <img className={css.buttonImg} src={couponImg} />
-                      </TButton>
-                    </div>
-                  );
-                })}
-              {isBillingProductVisible && (
-                <BuyNowContainer
-                  className={css.buyNowCartContainer}
-                  spotlightId="detail-buy-container"
-                  defaultElement="detail-buy-now-button"
-                >
-                  <TButton
-                    spotlightId="detail-buy-now-button"
-                    className={css.buyNowButton}
-                    onClick={handleBuyNowClick}
-                    onSpotlightUp={handleSpotlightUpFromBuyButtons}
-                    onSpotlightDown={handleSpotlightDownFromBuyNow}
-                    data-spotlight-next-down={focusDownMap['detail-buy-now-button']}
-                    type="detail_small"
-                  >
-                    <div className={css.buyNowText}>{$L('BUY NOW')}</div>
-                  </TButton>
-                  <TButton
-                    spotlightId="detail-add-to-cart-button"
-                    className={css.addToCartButton}
-                    // onClick={handleAddToCartClick}
-                    onClick={handleBuyNowClick}
-                    onSpotlightUp={handleSpotlightUpFromBuyButtons}
-                    onSpotlightDown={handleSpotlightDownFromAddToCart}
-                    data-spotlight-next-down={focusDownMap['detail-add-to-cart-button']}
-                    type="detail_small"
-                  >
-                    <div className={css.addToCartText}>{$L('ADD TO CART')}</div>
-                  </TButton>
-                </BuyNowContainer>
-              )}
-
-              <ShopByMobileContainer
-                className={classNames(
-                  css.buttonContainer,
-                  isBillingProductVisible && css.buttonHasNoCart
-                )}
-                spotlightId="detail-shop-by-mobile-container"
-                defaultElement={SpotlightIds.DETAIL_SHOPBYMOBILE}
+              <ButtonStackContainer
+                className={css.buttonStackContainer}
+                spotlightId="detail-button-stack"
+                defaultElement={stackDefaultElement}
               >
-                {/* BUY NOW + ADD TO CART 버튼들 (결제 가능 상품일 때만 렌더링) */}
-                <TButton
-                  spotlightId={SpotlightIds.DETAIL_SHOPBYMOBILE}
-                  className={css.shopByMobileButton}
-                  onClick={handleShopByMobileOpen}
-                  onSpotlightUp={handleSpotlightUpToBackButton}
-                  onSpotlightDown={handleSpotlightDownFromShopByMobile}
-                  data-spotlight-next-down={focusDownMap[shopByMobileId]}
-                  data-spotlight-next-up={shopByMobileUpTarget}
-                >
-                  <div className={css.shopByMobileText}>{$L('SHOP BY MOBILE')}</div>
-                </TButton>
-                {panelInfo && (
-                  <div className={css.favoriteBtnWrapper}>
-                    <FavoriteBtn
-                      className={css.favoriteBtn}
-                      selectedPatnrId={panelInfo.patnrId}
-                      selectedPrdtId={panelInfo.prdtId}
-                      favoriteFlag={favoriteFlag}
-                      onFavoriteFlagChanged={onFavoriteFlagChanged}
-                      kind={'item_detail'}
-                      nextDownId={focusDownMap['favoriteBtn']}
-                    />
-                  </div>
+                {userNumber &&
+                  promotions.map((promotion, idx) => {
+                    const couponButtonId = `detail-coupon-button-${idx}`;
+                    return (
+                      <div className={css.couponContainer} key={idx}>
+                        <div className={css.couponTitleText}>
+                          <div className={css.firstTitle}>SPECIAL PROMOTION</div>
+                          <div className={css.secondTitle}>
+                            Coupon only applicable to this product!
+                          </div>
+                        </div>
+                        <TButton
+                          spotlightId={couponButtonId}
+                          className={css.couponButton}
+                          onClick={() => {
+                            handleCouponClick(idx, promotion);
+                          }}
+                          onSpotlightUp={handleSpotlightUpFromCouponButtons}
+                          onSpotlightDown={(e) => handleSpotlightDownFromCoupon(e, couponButtonId)}
+                          data-spotlight-next-down={focusDownMap[couponButtonId]}
+                          size="detail_very_small"
+                        >
+                          <div className={css.couponText}>COUPON</div>
+                          <img className={css.buttonImg} src={couponImg} />
+                        </TButton>
+                      </div>
+                    );
+                  })}
+                {isBillingProductVisible && (
+                  <BuyNowContainer
+                    className={css.buyNowCartContainer}
+                    spotlightId="detail-buy-container"
+                    defaultElement="detail-buy-now-button"
+                  >
+                    <TButton
+                      spotlightId="detail-buy-now-button"
+                      className={css.buyNowButton}
+                      onClick={handleBuyNowClick}
+                      onSpotlightUp={handleSpotlightUpFromBuyButtons}
+                      onSpotlightDown={handleSpotlightDownFromBuyNow}
+                      data-spotlight-next-down={focusDownMap['detail-buy-now-button']}
+                      type="detail_small"
+                    >
+                      <div className={css.buyNowText}>{$L('BUY NOW')}</div>
+                    </TButton>
+                    <TButton
+                      spotlightId="detail-add-to-cart-button"
+                      className={css.addToCartButton}
+                      // onClick={handleAddToCartClick}
+                      onClick={handleBuyNowClick}
+                      onSpotlightUp={handleSpotlightUpFromBuyButtons}
+                      onSpotlightDown={handleSpotlightDownFromAddToCart}
+                      data-spotlight-next-down={focusDownMap['detail-add-to-cart-button']}
+                      type="detail_small"
+                    >
+                      <div className={css.addToCartText}>{$L('ADD TO CART')}</div>
+                    </TButton>
+                  </BuyNowContainer>
                 )}
-              </ShopByMobileContainer>
+
+                <ShopByMobileContainer
+                  className={classNames(
+                    css.buttonContainer,
+                    isBillingProductVisible && css.buttonHasNoCart
+                  )}
+                  spotlightId="detail-shop-by-mobile-container"
+                  defaultElement={SpotlightIds.DETAIL_SHOPBYMOBILE}
+                >
+                  {/* BUY NOW + ADD TO CART 버튼들 (결제 가능 상품일 때만 렌더링) */}
+                  <TButton
+                    spotlightId={SpotlightIds.DETAIL_SHOPBYMOBILE}
+                    className={css.shopByMobileButton}
+                    onClick={handleShopByMobileOpen}
+                    onSpotlightUp={handleSpotlightUpToBackButton}
+                    onSpotlightDown={handleSpotlightDownFromShopByMobile}
+                    data-spotlight-next-down={focusDownMap[shopByMobileId]}
+                    data-spotlight-next-up={shopByMobileUpTarget}
+                  >
+                    <div className={css.shopByMobileText}>{$L('SHOP BY MOBILE')}</div>
+                  </TButton>
+                  {panelInfo && (
+                    <div className={css.favoriteBtnWrapper}>
+                      <FavoriteBtn
+                        className={css.favoriteBtn}
+                        selectedPatnrId={panelInfo.patnrId}
+                        selectedPrdtId={panelInfo.prdtId}
+                        favoriteFlag={favoriteFlag}
+                        onFavoriteFlagChanged={onFavoriteFlagChanged}
+                        kind={'item_detail'}
+                        nextDownId={focusDownMap['favoriteBtn']}
+                      />
+                    </div>
+                  )}
+                </ShopByMobileContainer>
+              </ButtonStackContainer>
 
               <div className={css.callToOrderSection}>
                 {orderPhnNo && (
diff --git a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.module.less b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.module.less
index 36ea3189..5accc675 100644
--- a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.module.less
+++ b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.module.less
@@ -605,6 +605,19 @@
   }
 }
 
+.buttonStackContainer {
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+
+  > * {
+    margin-bottom: 5px;
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+}
+
 .favoriteBtnWrapper {
   width: 60px;
   height: 60px;
@@ -825,4 +838,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}