diff --git a/src/components/VideoDetailContent.tsx b/src/components/VideoDetailContent.tsx
index 5085b2e..ef36916 100644
--- a/src/components/VideoDetailContent.tsx
+++ b/src/components/VideoDetailContent.tsx
@@ -33,6 +33,7 @@ const VideoDetailContent: React.FC<VideoDetailContentProps> = ({ videoId, isModa
 
   const [copied, setCopied] = useState(false);
   const [isLandscape, setIsLandscape] = useState(false);
+  const [showSiteOverlay, setShowSiteOverlay] = useState(false);
   const [showLoginModal, setShowLoginModal] = useState(false);
 
   const [comments, setComments] = useState<CommentItem[]>([]);
@@ -68,6 +69,7 @@ const VideoDetailContent: React.FC<VideoDetailContentProps> = ({ videoId, isModa
     const fetchVideo = async () => {
       setLoading(true);
       setError(null);
+      setShowSiteOverlay(false);
       try {
         const data = await getVideoById(videoId);
         setVideo(data);
@@ -221,18 +223,46 @@ const VideoDetailContent: React.FC<VideoDetailContentProps> = ({ videoId, isModa
         <div className="ado2-contents-error"><p>{error}</p></div>
       ) : video ? (
         <div className={`video-detail-content ${isLandscape ? 'landscape' : ''}`}>
-          <video
-            src={video.result_movie_url}
-            controls
-            autoPlay
-            controlsList="nodownload"
-            onContextMenu={(e) => e.preventDefault()}
-            className="video-detail-player"
-            onLoadedMetadata={(e) => {
-              const v = e.currentTarget;
-              setIsLandscape(v.videoWidth > v.videoHeight);
-            }}
-          />
+          <div className="video-detail-player-wrap">
+            <video
+              src={video.result_movie_url}
+              controls
+              autoPlay
+              controlsList="nodownload"
+              onContextMenu={(e) => e.preventDefault()}
+              className="video-detail-player"
+              onLoadedMetadata={(e) => {
+                const v = e.currentTarget;
+                setIsLandscape(v.videoWidth > v.videoHeight);
+              }}
+              onTimeUpdate={(e) => {
+                if (!video.official_site_url) return;
+                const v = e.currentTarget;
+                // 영상 종료 3초 전부터 공식 홈페이지 오버레이 노출
+                setShowSiteOverlay(
+                  Number.isFinite(v.duration) && v.duration - v.currentTime <= 3
+                );
+              }}
+            />
+            {video.official_site_url && showSiteOverlay && (
+              <a
+                href={video.official_site_url}
+                target="_blank"
+                rel="noopener noreferrer"
+                className="video-site-overlay"
+              >
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+                  <circle cx="12" cy="12" r="10"/>
+                  <line x1="2" y1="12" x2="22" y2="12"/>
+                  <path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/>
+                </svg>
+                <span className="video-site-overlay-text">
+                  <strong>{video.store_name}</strong>
+                  {t('videoDetail.visitOfficialSite')}
+                </span>
+              </a>
+            )}
+          </div>
 
           <div className="video-detail-info">
             <h2 className="video-detail-store">{video.store_name}</h2>
diff --git a/src/locales/en.json b/src/locales/en.json
index ba649a4..23b9407 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -624,6 +624,7 @@
     "closeAriaLabel": "Close",
     "share": "Share",
     "copied": "Copied!",
+    "visitOfficialSite": "Visit official website",
     "shareKakao": "KakaoTalk",
     "shareFacebook": "Facebook",
     "shareTwitter": "X (Twitter)",
diff --git a/src/locales/ko.json b/src/locales/ko.json
index 9098eb9..a0fb7ac 100644
--- a/src/locales/ko.json
+++ b/src/locales/ko.json
@@ -623,6 +623,7 @@
     "closeAriaLabel": "닫기",
     "share": "공유하기",
     "copied": "복사됨!",
+    "visitOfficialSite": "공식 홈페이지 방문하기",
     "shareKakao": "카카오톡",
     "shareFacebook": "페이스북",
     "shareTwitter": "X (트위터)",
diff --git a/src/styles/contents-social.css b/src/styles/contents-social.css
index dad3794..aabf098 100644
--- a/src/styles/contents-social.css
+++ b/src/styles/contents-social.css
@@ -720,18 +720,77 @@
   flex-direction: column;
 }
 
+.video-detail-player-wrap {
+  position: relative;
+  width: 100%;
+  max-width: 360px;
+  flex-shrink: 0;
+}
+
+.video-detail-content.landscape .video-detail-player-wrap {
+  max-width: 100%;
+  width: 100%;
+}
+
 .video-detail-player {
   display: block;
   width: 100%;
   height: auto;
-  max-width: 360px;
   border-radius: 12px;
+}
+
+/* 영상 종료 직전 공식 홈페이지 링크 오버레이 (유튜브 엔드스크린 스타일) */
+.video-site-overlay {
+  position: absolute;
+  left: 12px;
+  right: 12px;
+  bottom: 64px; /* 네이티브 컨트롤 바를 가리지 않도록 */
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 10px 14px;
+  background: rgba(0, 0, 0, 0.75);
+  border: 1px solid rgba(255, 255, 255, 0.25);
+  border-radius: 10px;
+  color: #fff;
+  text-decoration: none;
+  font-size: 13px;
+  line-height: 1.35;
+  backdrop-filter: blur(4px);
+  animation: video-site-overlay-in 0.3s ease-out;
+  transition: background 0.2s;
+}
+
+.video-site-overlay:hover {
+  background: rgba(0, 0, 0, 0.9);
+}
+
+.video-site-overlay svg {
   flex-shrink: 0;
 }
 
-.video-detail-content.landscape .video-detail-player {
-  max-width: 100%;
-  width: 100%;
+.video-site-overlay-text {
+  display: flex;
+  flex-direction: column;
+  min-width: 0;
+}
+
+.video-site-overlay-text strong {
+  font-weight: 600;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+@keyframes video-site-overlay-in {
+  from {
+    opacity: 0;
+    transform: translateY(8px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
 }
 
 .video-detail-info {
@@ -1158,7 +1217,7 @@
   .video-detail-content {
     flex-direction: column;
   }
-  .video-detail-player {
+  .video-detail-player-wrap {
     max-width: 100%;
     width: 100%;
   }
diff --git a/src/types/api.ts b/src/types/api.ts
index b511e68..f8e5861 100644
--- a/src/types/api.ts
+++ b/src/types/api.ts
@@ -281,6 +281,7 @@ export interface VideoListItem {
   title?: string | null;
   description?: string | null;
   hashtags?: string[] | null;
+  official_site_url?: string | null;
   created_at: string;
   like_count: number;
   comment_count: number;
@@ -296,6 +297,7 @@ export interface VideoDetailItem {
   region: string;
   title?: string | null;
   description?: string | null;
+  official_site_url?: string | null;
   created_at: string;
   like_count: number;
   is_liked_by_me: boolean;