diff --git a/go-backend/internal/services/official_accounts_service.go b/go-backend/internal/services/official_accounts_service.go
index 0610342..1ffa932 100644
--- a/go-backend/internal/services/official_accounts_service.go
+++ b/go-backend/internal/services/official_accounts_service.go
@@ -262,9 +262,19 @@ func (s *OfficialAccountsService) FetchRSS(ctx context.Context, rssURL string) (
 	isGoogleNews := strings.Contains(rssURL, "news.google.com/rss")
 	if isGoogleNews {
 		for i := range feed.Channel.Items {
-			resolved := s.resolveGoogleNewsLink(feed.Channel.Items[i].Link)
-			if resolved != "" {
-				feed.Channel.Items[i].Link = resolved
+			item := &feed.Channel.Items[i]
+			// Preserve original Google News URL in GUID for dedup
+			if item.GUID == "" {
+				item.GUID = item.Link
+			}
+			resolved := ResolveGoogleNewsURL(item.Link)
+			if resolved != item.Link && resolved != "" {
+				// Base64 decode succeeded — use real article URL
+				item.Link = resolved
+			} else if item.Source.URL != "" {
+				// Fall back to the <source url="..."> from the RSS item
+				item.Link = item.Source.URL
+				log.Debug().Str("source", item.Source.Name).Str("url", item.Source.URL).Msg("Using RSS source URL as fallback for Google News link")
 			}
 		}
 	}
@@ -409,9 +419,10 @@ func (s *OfficialAccountsService) FetchNewArticles(ctx context.Context, configID
 	var newItems []RSSItem
 	var newSourceNames []string
 	for i, item := range allItems {
-		link := item.Link
+		// Use GUID (original Google News URL) for dedup — Link may be a source homepage
+		link := item.GUID
 		if link == "" {
-			link = item.GUID
+			link = item.Link
 		}
 		if link == "" {
 			continue
@@ -517,9 +528,10 @@ func (s *OfficialAccountsService) CreatePostForAccount(ctx context.Context, conf
 
 	// Track article if this was a news post
 	if article != nil {
-		link := article.Link
+		// Use GUID (original Google News URL) for dedup tracking, not Link (may be source homepage)
+		link := article.GUID
 		if link == "" {
-			link = article.GUID
+			link = article.Link
 		}
 		postIDStr := postID.String()
 		_, _ = tx.Exec(ctx, `