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 7200a019..f0fb1959 100644
--- a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx
+++ b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/ProductAllSection.jsx
@@ -15,6 +15,7 @@ import couponImg from '../../../../assets/images/icons/coupon.png';
 // import Spottable from '@enact/spotlight/Spottable';
 //image
 import arrowDown from '../../../../assets/images/icons/ic_arrow_down_3x_new.png';
+import arrowDownIcon from '../../../../assets/images/icons/ic-arrow-down.svg';
 import indicatorDefaultImage from '../../../../assets/images/img-thumb-empty-144@3x.png';
 import { setHidePopup, setShowPopup } from '../../../actions/commonActions.js';
 import {
@@ -1452,15 +1453,22 @@ export default function ProductAllSection({
                 })()} */}
               </Container>
 
-              {panelInfo && panelInfo.type === 'theme' && !openThemeItemOverlay && (
-                <TButton
+              {/* Theme Item Button - 새로운 bottomButtonWrapper로 감싸기 */}
+              {/* {panelInfo && panelInfo.type === 'theme' && !openThemeItemOverlay && ( */}
+              <Container
+                className={css.bottomButtonWrapper}
+                spotlightId="theme-item-button-container"
+              >
+                <div
                   className={css.themeButton}
                   onClick={handleThemeItemButtonClick}
                   spotlightId="theme-open-button"
                 >
-                  {$L('THEME ITEM')}
-                </TButton>
-              )}
+                  <div>{$L('THEME ITEM')}</div>
+                  <img src={arrowDownIcon} className={css.themeButtonIcon} />
+                </div>
+              </Container>
+              {/* )} */}
 
               <DetailMobileSendPopUp
                 ismobileSendPopupOpen={mobileSendPopupOpen}
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 568cc2c9..3b43db25 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
@@ -444,7 +444,7 @@
     align-items: center !important;
     justify-content: center !important;
     &:focus {
-    background: @PRIMARY_COLOR_RED !important; 
+    background: @PRIMARY_COLOR_RED !important;
       > div {
         .couponText {
           color: white !important;
@@ -459,7 +459,7 @@
         color: white !important;
         font-size: 25px !important;
         font-family: @baseFont !important;
-        font-weight: 400 !important;        
+        font-weight: 400 !important;
         text-align: center !important;
       }
       .buttonImg {
@@ -661,6 +661,24 @@
   }
 }
 
+// Theme Item Button을 위한 새로운 Wrapper
+.bottomButtonWrapper {
+  position: absolute;
+  bottom: 40px;                // 바닥에서 40px 마진
+  left: 60px;                  // 왼쪽에서 60px
+  width: 635px;                // 고정 너비
+  min-width: 13.5rem;          // 최소 너비
+  max-width: 27.08333rem;      // 최대 너비
+  letter-spacing: -0.75px;     // 자간 조정
+
+  > * {
+    margin-bottom: 5px;
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+}
+
 .productDetailsButton,
 .userReviewsButton,
 .youMayLikeButton {
@@ -689,6 +707,64 @@
   }
 }
 
+.productDetailsButton,
+.userReviewsButton,
+.youMayLikeButton {
+  align-self: stretch;
+  height: 60px;
+  background: rgba(255, 255, 255, 0.05); // 기본 회색 배경
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 100%;
+
+  color: #eaeaea;
+  font-size: 25px;
+  font-family: @baseFont; // LG Smart 폰트 사용
+  font-weight: 400; // Bold에서 Regular로 변경
+  line-height: 35px;
+
+  &:focus {
+    background: @PRIMARY_COLOR_RED; // 포커스시만 빨간색
+  }
+
+  &.active {
+    border: 4px solid #4f172c;
+    background: #4f172c;
+  }
+}
+
+.themeButton {
+  width: 100%;
+  height: 60px;
+  padding: 20px 30px;
+  background: rgba(255, 255, 255, 0.05);
+  overflow: hidden;
+  border-radius: 6px;
+  justify-content: center;
+  align-items: center;
+  gap: 15px;
+  display: inline-flex;
+
+  color: white;
+  font-size: 25px;
+  font-family: @baseFont; // LG Smart UI
+  font-weight: 600;
+  line-height: 35px;
+  word-wrap: break-word;
+
+  &:focus {
+    background: @PRIMARY_COLOR_RED;
+  }
+}
+
+.themeButtonIcon {
+  width: 52.5px;
+  height: 31.25px;
+  object-fit: contain;
+}
+
 .addToCartButton {
   flex: 1 1 0% !important;
   width: auto !important;
diff --git a/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/heightCalculator.js b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/heightCalculator.js
new file mode 100644
index 00000000..711c6878
--- /dev/null
+++ b/com.twin.app.shoptime/src/views/DetailPanel/ProductAllSection/heightCalculator.js
@@ -0,0 +1,107 @@
+// InfoSection 높이 측정을 위한 유틸리티 함수
+
+// InfoSection 내부 요소들의 높이를 계산하는 함수
+export const calculateInfoSectionHeight = (infoSectionElement) => {
+  if (!infoSectionElement) {
+    console.error('InfoSection element not found');
+    return null;
+  }
+
+  const result = {
+    // 전체 InfoSection 높이
+    totalHeight: infoSectionElement.offsetHeight || infoSectionElement.clientHeight,
+
+    // 내부 요소들의 높이
+    elements: {},
+  };
+
+  // 주요 요소들의 높이 측정
+  const selectors = [
+    '.leftInfoContainer', // 전체 왼쪽 컨테이너
+    '.leftInfoWrapper', // 내부 래퍼
+    '.headerContent', // 헤더 콘텐츠 (태그, 별점)
+    '.productOverview', // 제품 개요
+    '.qrWrapper', // QR 코드
+    '.buttonStackContainer', // 버튼 스택 컨테이너
+    '.couponStackContainer', // 쿠폰 스택 (있을 경우)
+    '.buyNowCartContainer', // BUY NOW + ADD TO CART (있을 경우)
+    '.buttonContainer', // SHOP BY MOBILE (있을 경우)
+    '.callToOrderSection', // 전화 주문 섹션
+    '.actionButtonsWrapper', // PRODUCT DETAILS, USER REVIEWS, YOU MAY ALSO LIKE
+    '.themeButton', // THEME ITEM 버튼
+    '.DetailMobileSendPopUp', // 모바일 전송 팝업
+  ];
+
+  selectors.forEach((selector) => {
+    const element = infoSectionElement.querySelector(selector);
+    if (element) {
+      result.elements[selector] = {
+        height: element.offsetHeight,
+        clientHeight: element.clientHeight,
+        scrollHeight: element.scrollHeight,
+        marginTop: parseInt(window.getComputedStyle(element).marginTop) || 0,
+        marginBottom: parseInt(window.getComputedStyle(element).marginBottom) || 0,
+        paddingTop: parseInt(window.getComputedStyle(element).paddingTop) || 0,
+        paddingBottom: parseInt(window.getComputedStyle(element).paddingBottom) || 0,
+        isVisible: element.offsetParent !== null,
+      };
+    }
+  });
+
+  // 실제 사용된 높이 계산
+  const calculatedHeight = Object.values(result.elements).reduce((total, element) => {
+    if (element && element.isVisible) {
+      return total + element.height + element.marginTop + element.marginBottom;
+    }
+    return total;
+  }, 0);
+
+  result.calculatedHeight = calculatedHeight;
+  result.remainingSpace = result.totalHeight - calculatedHeight;
+  result.isOverflowing = calculatedHeight > result.totalHeight;
+
+  return result;
+};
+
+// React Hook으로 만든 버전
+export const useInfoSectionHeight = (infoSectionRef) => {
+  const [heightInfo, setHeightInfo] = useState(null);
+
+  const measureHeight = useCallback(() => {
+    if (infoSectionRef.current) {
+      const info = calculateInfoSectionHeight(infoSectionRef.current);
+      setHeightInfo(info);
+      console.log('InfoSection Height Info:', info);
+      return info;
+    }
+  }, [infoSectionRef]);
+
+  // 컴포넌트 마운트 시 측정
+  useEffect(() => {
+    measureHeight();
+  }, [measureHeight]);
+
+  // 윈도우 리사이즈 시 재측정 (선택사항)
+  useEffect(() => {
+    const handleResize = () => {
+      measureHeight();
+    };
+
+    window.addEventListener('resize', handleResize);
+    return () => window.removeEventListener('resize', handleResize);
+  }, [measureHeight]);
+
+  return {
+    heightInfo,
+    measureHeight,
+  };
+};
+
+// 사용 예시:
+// const infoSectionRef = useRef(null);
+// const { heightInfo, measureHeight } = useInfoSectionHeight(infoSectionRef);
+//
+// // JSX에서
+// <div ref={infoSectionRef} className={css.infoSection}>
+//   ... content ...
+// </div>