diff --git a/tools/ci/check_article_details.sh b/tools/ci/check_article_details.sh
index 69b15b905..cda3776bb 100644
--- a/tools/ci/check_article_details.sh
+++ b/tools/ci/check_article_details.sh
@@ -467,6 +467,42 @@ validate_added_articles() {
   return 1
 }
 
+find_trailing_spaces() {
+  echo
+  echo "Looking for trailing whitespaces..."
+
+  local job_error=0
+
+  while IFS= read -r file; do
+    # Skip empty lines
+    [[ -z "$file" ]] && continue
+
+    # Check if file exists
+    if [[ ! -f "$file" ]]; then
+      echo "Warning: File not found: $file"
+      continue
+    fi
+
+    # Count lines with trailing spaces
+    count=$(grep -c '[[:blank:]]$' "$file")
+
+    # Report only if there are trailing spaces
+    if [[ "$count" -gt 0 ]] 2>/dev/null; then
+      job_error=1
+      echo
+      echo "❌ Lines end with extra spaces or tabs."
+      echo "   Remove trailing whitespaces from (use <br> where needed):"
+      echo "   $file -- $count line(s) in total."
+    fi
+  done < "$TEMP_DIR/index-added.txt"
+
+  if [ "$job_error" -eq 0 ]; then
+    return 0
+  fi
+
+  return 1
+}
+
 
 ###############################################################################
 # FEATURE ASSET VALIDATION
@@ -565,7 +601,59 @@ validate_author_presence() {
 # UPDATED ARTICLES VALIDATION
 ###############################################################################
 
-validate_updated_articles() {
+collect_updated_articles_body_only() {
+  local base_ref="$1"
+  local output_file="${3:-$TEMP_DIR/index-updated-body.txt}"
+
+  > "$output_file"  # Clear output file
+
+  while IFS= read -r file; do
+    # Skip empty lines
+    [[ -z "$file" ]] && continue
+
+    # Get the diff for this specific file
+    local diff_output
+    diff_output=$(git diff -U0 "$base_ref"...HEAD -- "$file")
+
+    # Flag to track if we found changes in frontmatter
+    local has_frontmatter_changes=false
+
+    # Parse the diff output looking for change hunks
+    while IFS= read -r line; do
+      # Look for hunk headers like @@ -1,5 +1,5 @@
+      if [[ "$line" =~ ^@@\ -([0-9]+) ]]; then
+        local start_line="${BASH_REMATCH[1]}"
+
+        # Get the frontmatter end line from the original file
+        local frontmatter_end
+        frontmatter_end=$(git show "$base_ref:$file" | awk '
+          BEGIN { count=0 }
+          /^---$/ { count++; if(count==2) { print NR; exit } }
+        ')
+
+        # If we couldn't find frontmatter end, assume no frontmatter
+        [[ -z "$frontmatter_end" ]] && frontmatter_end=0
+
+        # If this hunk starts within the frontmatter section (line 1 to frontmatter_end)
+        if [[ $start_line -le $frontmatter_end ]]; then
+          has_frontmatter_changes=true
+          break
+        fi
+      fi
+    done <<< "$diff_output"
+
+    # If no frontmatter changes detected, add to output
+    if [[ "$has_frontmatter_changes" == false ]]; then
+      echo "$file" >> "$output_file"
+    fi
+  done < "$TEMP_DIR/index-updated.txt"
+
+  echo
+  echo "List of updated articles with body-only changes:"
+  cat "$output_file"
+}
+
+validate_updated_articles_lastmod() {
   echo
   echo "Validating updated articles..."
 
@@ -582,6 +670,9 @@ validate_updated_articles() {
     LASTMOD_DATE=$(awk '/^lastmod:/ { gsub(/["'\'']/, "", $2); print $2 }' "$index_file")
     ARTICLE_DATE_ONLY="${ARTICLE_DATE:0:10}"
 
+    local FILE_MOD_DATE
+    FILE_MOD_DATE=$(stat -c '%y' "$index_file" 2>/dev/null | cut -d' ' -f1 || stat -f '%Sm' -t '%Y-%m-%d' "$index_file")
+
     echo
     echo "Article: $index_file"
 
@@ -612,12 +703,24 @@ validate_updated_articles() {
       fi
     fi
 
+    if [ "$article_error" -eq 0 ] && [ -n "$FILE_MOD_DATE" ]; then
+      # Calculate days difference (allowing up to 3 days lag)
+      local days_diff
+      days_diff=$(( ( $(date -d "$FILE_MOD_DATE" +%s 2>/dev/null || date -j -f "%Y-%m-%d" "$FILE_MOD_DATE" +%s) - $(date -d "$LASTMOD_DATE" +%s 2>/dev/null || date -j -f "%Y-%m-%d" "$LASTMOD_DATE" +%s) ) / 86400 ))
+
+      if [ "$days_diff" -gt 3 ]; then
+        echo "❌ lastmod is outdated: $LASTMOD_DATE (file modified: $FILE_MOD_DATE)."
+        echo "   Update lastmod to reflect the recent changes (within 3 days of modification)."
+        article_error=1
+      fi
+    fi
+
     if [ "$article_error" -eq 0 ]; then
       echo "lastmod date validated successfully."
     else
       job_error=1
     fi
-  done < "$TEMP_DIR/index-updated.txt"
+  done < "$TEMP_DIR/index-updated-body.txt"
 
   if [ "$job_error" -eq 0 ]; then
     return 0
@@ -715,6 +818,7 @@ banner "🔎 Checking added files..."
 if [[ -s "$TEMP_DIR/index-added.txt" ]]; then
   extract_added_metadata || overall_error=1
   validate_added_articles || overall_error=1
+  find_trailing_spaces || overall_error=1
   validate_author_presence || overall_error=1
   validate_feature_assets || overall_error=1
 else
@@ -724,7 +828,8 @@ fi
 banner "🔎 Checking updated files..."
 
 if [[ -s "$TEMP_DIR/index-updated.txt" ]]; then
-  validate_updated_articles || overall_error=1
+  collect_updated_articles_body_only "$BASE_REF"
+  validate_updated_articles_lastmod || overall_error=1
 fi
 
 if [[ -s "$TEMP_DIR/folders-renamed.txt" ]]; then