diff --git a/backend/app/services/marketing.py b/backend/app/services/marketing.py
index 591122a..6238301 100644
--- a/backend/app/services/marketing.py
+++ b/backend/app/services/marketing.py
@@ -7,7 +7,9 @@ logger = logging.getLogger(__name__)
 
 class MarketingService:
     def __init__(self):
-        self.ai = get_ai_router()
+        ai_router = get_ai_router()
+        self.ai = ai_router
+        self._ai_available = len(ai_router.providers) > 0
 
     async def generate(
         self,
@@ -18,6 +20,12 @@ class MarketingService:
         count: int = 3,
         preference_context: Optional[str] = None,
     ) -> List[Dict[str, Any]]:
+        name = product_info.get("name", "")
+        desc = product_info.get("description", "")
+
+        if not self._ai_available:
+            return self._template_fallback(name, desc, target, style, count, language)
+
         results = []
         styles = self._get_style_variants(style, count)
 
@@ -35,9 +43,44 @@ class MarketingService:
 
         return results
 
+    def _template_fallback(self, name: str, desc: str, target: str, style: str, count: int, language: str) -> List[Dict[str, Any]]:
+        styles = self._get_style_variants(style, count)
+        results = []
+        for s in styles:
+            if language == "zh":
+                results.append({
+                    "content": f"【{name}】产品介绍\n\n{desc}\n\n我们诚挚向您推荐{name}，产品品质优良，价格具有竞争力，欢迎联系我们获取更多信息。",
+                    "style": s,
+                    "provider": "template",
+                })
+            else:
+                results.append({
+                    "content": f"Subject: Introduction of {name}\n\nDear Customer,\n\nWe are pleased to introduce our {name}. {desc}\n\n{self._get_closing(s)}",
+                    "style": s,
+                    "provider": "template",
+                })
+        return results
+
+    def _get_closing(self, style: str) -> str:
+        closings = {
+            "professional": "Looking forward to your favorable reply. Best regards.",
+            "friendly": "Hope to hear from you soon! Warm regards.",
+            "urgent": "Please contact us at your earliest convenience. Best regards.",
+            "benefit_focused": "Don't miss this opportunity to boost your business. Contact us today!",
+            "storytelling": "Let us help you tell your brand story. Get in touch!",
+        }
+        return closings.get(style, closings["professional"])
+
     async def generate_keywords(
         self, product_info: Dict[str, Any], language: str = "en", count: int = 10
     ) -> List[str]:
+        name = product_info.get("name", "")
+        desc = product_info.get("description", "")
+
+        if not self._ai_available:
+            words = name.split() + [w for w in desc.split() if len(w) > 4]
+            return list(dict.fromkeys(words))[:count]
+
         try:
             schema = {
                 "type": "object",
@@ -48,7 +91,7 @@ class MarketingService:
                     }
                 },
             }
-            text = f"Product: {product_info.get('name', '')}. {product_info.get('description', '')}"
+            text = f"Product: {name}. {desc}"
             result = await self.ai.extract(text, schema)
             keywords = result.get("data", {}).get("keywords", [])
             return keywords[:count]
@@ -66,6 +109,14 @@ class MarketingService:
     async def analyze_competitors(
         self, product_info: Dict[str, Any], market: str = "US"
     ) -> Dict[str, Any]:
+        if not self._ai_available:
+            return {
+                "price_range": "Contact us for pricing",
+                "key_selling_points": [product_info.get("name", "")],
+                "common_keywords": [],
+                "market_trends": "AI analysis unavailable. Please configure an AI provider in settings.",
+                "suggestions": ["Set up an AI provider for competitor insights"],
+            }
         try:
             text = f"Product: {product_info.get('name', '')} in {market} market. Category: {product_info.get('category', '')}. Description: {product_info.get('description', '')}"
             schema = {
diff --git a/backend/app/services/onboarding.py b/backend/app/services/onboarding.py
index a97f0c8..f25fd37 100644
--- a/backend/app/services/onboarding.py
+++ b/backend/app/services/onboarding.py
@@ -35,11 +35,10 @@ class OnboardingService:
         await self.db.flush()
 
         mkt = MarketingService()
+        product_info = {"name": name, "description": description, "category": category or "general"}
         try:
             content = await mkt.generate(
-                product_name=name,
-                description=description,
-                category=category or "general",
+                product_info=product_info,
                 target=target,
                 style="professional",
                 count=3,
@@ -51,7 +50,7 @@ class OnboardingService:
 
         try:
             keywords_result = await mkt.generate_keywords(
-                product_name=name, description=description, category=category or "general"
+                product_info=product_info
             )
             keywords = keywords_result if isinstance(keywords_result, list) else []
         except Exception as e:
diff --git a/uni-app/src/pages/marketing/marketing.vue b/uni-app/src/pages/marketing/marketing.vue
index fcea8a8..ee822c1 100644
--- a/uni-app/src/pages/marketing/marketing.vue
+++ b/uni-app/src/pages/marketing/marketing.vue
@@ -100,12 +100,23 @@
           <text class="export-btn" @click="exportCsv" v-if="activeTab !== 'keywords'">导出CSV</text>
         </view>
       </view>
+      <view class="style-tabs" v-if="activeTab !== 'keywords' && availableStyles.length > 1">
+        <view
+          class="style-tab"
+          v-for="s in availableStyles"
+          :key="s"
+          :class="{ active: selectedStyle === s }"
+          @click="selectedStyle = s"
+        >
+          {{ styleLabels[s] || s }}
+        </view>
+      </view>
       <view class="results-list" v-if="activeTab !== 'keywords'">
-        <view class="result-item" v-for="(item, index) in resultsMap[activeTab]" :key="index">
-          <text class="result-text">{{ item }}</text>
+        <view class="result-item" v-for="(item, index) in filteredResults" :key="index">
+          <text class="result-text">{{ item.content || item }}</text>
           <view class="result-actions">
-            <text class="copy-btn" @click="copyText(item)">复制</text>
-            <text class="send-btn" @click="sendToWhatsapp(item)" v-if="activeTab !== 'product'">发送</text>
+            <text class="copy-btn" @click="copyText(item.content || item)">复制</text>
+            <text class="send-btn" @click="sendToWhatsapp(item.content || item)" v-if="activeTab !== 'product'">发送</text>
             <text class="competitor-btn" @click="runCompetitorAnalysis" v-if="activeTab === 'copy'">竞品分析</text>
           </view>
         </view>
@@ -134,7 +145,7 @@
 </template>
 
 <script setup>
-import { ref, reactive } from 'vue'
+import { ref, reactive, computed } from 'vue'
 import { marketingApi, interactionApi } from '@/utils/api.js'
 
 const tabConfig = {
@@ -193,6 +204,31 @@ const loading = ref(false)
 const resultsMap = reactive({ copy: [], whatsapp: [], product: [], keywords: [] })
 const competitorResult = ref(null)
 const stats = ref(null)
+const selectedStyle = ref('professional')
+
+const styleLabels = {
+  professional: '专业正式',
+  friendly: '亲切友好',
+  urgent: '紧急催促',
+  benefit_focused: '利益导向',
+  storytelling: '故事叙述',
+}
+
+const availableStyles = computed(() => {
+  const items = resultsMap[activeTab.value]
+  if (!items || items.length === 0 || typeof items[0] === 'string') return []
+  const styles = [...new Set(items.map(i => i.style).filter(Boolean))]
+  return styles
+})
+
+const filteredResults = computed(() => {
+  const items = resultsMap[activeTab.value]
+  if (!items || items.length === 0) return []
+  if (typeof items[0] === 'string') return items
+  const style = selectedStyle.value
+  const filtered = items.filter(i => i.style === style)
+  return filtered.length > 0 ? filtered : items
+})
 
 const formData = ref({
   product_name: '',
@@ -254,6 +290,9 @@ const generateContent = async () => {
         formData.value.style
       )
       resultsMap[tab] = res.results || []
+      if (res.results && res.results.length > 0) {
+        selectedStyle.value = res.results[0].style || formData.value.style
+      }
       loadStats()
     }
   } catch (err) {
@@ -278,7 +317,10 @@ const exportCsv = () => {
   const items = resultsMap[activeTab.value]
   if (!items || items.length === 0) return
   let csv = 'Content\n'
-  items.forEach(r => { csv += `"${r.replace(/"/g, '""')}"\n` })
+  items.forEach(r => {
+    const text = typeof r === 'string' ? r : (r.content || '')
+    csv += `"${text.replace(/"/g, '""')}"\n`
+  })
   const blob = new Blob([csv], { type: 'text/csv' })
   const url = URL.createObjectURL(blob)
   uni.downloadFile({
@@ -439,6 +481,30 @@ const runCompetitorAnalysis = async () => {
   border: 2rpx solid #1890ff;
 }
 
+.style-tabs {
+  display: flex;
+  gap: 12rpx;
+  margin-bottom: 20rpx;
+  overflow-x: auto;
+  padding-bottom: 4rpx;
+}
+
+.style-tab {
+  flex-shrink: 0;
+  padding: 12rpx 24rpx;
+  background: #f5f5f5;
+  border-radius: 8rpx;
+  font-size: 24rpx;
+  color: #666;
+  white-space: nowrap;
+}
+
+.style-tab.active {
+  background: #e6f7ff;
+  color: #1890ff;
+  border: 2rpx solid #1890ff;
+}
+
 .generate-btn {
   width: 100%;
   height: 88rpx;