diff --git a/Dockerfile b/Dockerfile
index f039175..c05674d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -339,16 +339,55 @@ RUN set -eux && \
   rm -rf /root/.cache/huggingface && \
   \
   # ========================================
-  # [2/5] BabelDOC Warmup
+  # [2/5] BabelDOC 資源預下載
   # ========================================
+  # 策略：使用 --generate-offline-assets 生成離線包
+  # 這比 --warmup 更穩定，因為可以完整驗證所有資源
   echo "" && \
-  echo "📥 [2/5] 執行 BabelDOC warmup..." && \
+  echo "📥 [2/5] 執行 BabelDOC 資源預下載..." && \
   if command -v babeldoc >/dev/null 2>&1; then \
-  babeldoc --warmup 2>&1 || echo "⚠️ BabelDOC warmup 失敗或無需 warmup"; \
+  BABELDOC_MAX_RETRIES=3; \
+  BABELDOC_RETRY_COUNT=0; \
+  BABELDOC_SUCCESS=false; \
+  mkdir -p /tmp/babeldoc-offline && \
+  while [ $BABELDOC_RETRY_COUNT -lt $BABELDOC_MAX_RETRIES ]; do \
+    BABELDOC_RETRY_COUNT=$((BABELDOC_RETRY_COUNT + 1)); \
+    echo "🔄 BabelDOC 資源下載嘗試 $BABELDOC_RETRY_COUNT/$BABELDOC_MAX_RETRIES..."; \
+    if timeout 600 babeldoc --generate-offline-assets /tmp/babeldoc-offline 2>&1; then \
+      echo "✅ BabelDOC 離線資源包生成成功"; \
+      OFFLINE_PKG=$(ls /tmp/babeldoc-offline/offline_assets_*.zip 2>/dev/null | head -1); \
+      if [ -n "$OFFLINE_PKG" ] && [ -f "$OFFLINE_PKG" ]; then \
+        echo "📦 找到離線包: $OFFLINE_PKG"; \
+        if babeldoc --restore-offline-assets "$OFFLINE_PKG" 2>&1; then \
+          echo "✅ BabelDOC 資源已成功恢復到快取"; \
+          BABELDOC_SUCCESS=true; \
+          break; \
+        else \
+          echo "⚠️ 資源恢復失敗，重試..."; \
+        fi; \
+      else \
+        echo "⚠️ 未找到離線包，嘗試 warmup 模式..."; \
+        if timeout 600 babeldoc --warmup 2>&1; then \
+          BABELDOC_SUCCESS=true; \
+          break; \
+        fi; \
+      fi; \
+    else \
+      echo "⚠️ BabelDOC 資源下載失敗或超時（10分鐘），等待 30 秒後重試..."; \
+      sleep 30; \
+    fi; \
+  done; \
+  rm -rf /tmp/babeldoc-offline; \
+  if [ "$BABELDOC_SUCCESS" = "true" ]; then \
+    echo "✅ BabelDOC 資源預下載完成"; \
   else \
-  echo "⚠️ babeldoc 命令不存在，跳過 warmup"; \
+    echo "⚠️ BabelDOC 資源下載在 $BABELDOC_MAX_RETRIES 次嘗試後仍失敗"; \
+    echo "   BabelDOC 功能將在 runtime 時按需下載資源"; \
+  fi; \
+  else \
+  echo "⚠️ babeldoc 命令不存在，跳過資源預下載"; \
   fi && \
-  echo "✅ BabelDOC warmup 步驟完成" && \
+  echo "✅ BabelDOC 步驟完成" && \
   \
   # ========================================
   # [3/5] PDFMathTranslate 多語言字型