diff --git a/config.py b/config.py
index f3d6453..100635a 100644
--- a/config.py
+++ b/config.py
@@ -320,7 +320,7 @@ YOUTUBE_API_KEY = os.getenv('YOUTUBE_API_KEY', '')
 # ==========================================
 # 系統版本與路徑
 # ==========================================
-SYSTEM_VERSION = "V10.111"
+SYSTEM_VERSION = "V10.112"
 LOG_FILE_PATH = os.path.join(BASE_DIR, 'logs/system.log')
 public_url = PUBLIC_URL  # 用於模板顯示
 
diff --git a/routes/sales_routes.py b/routes/sales_routes.py
index fcff7d0..627291d 100644
--- a/routes/sales_routes.py
+++ b/routes/sales_routes.py
@@ -839,6 +839,19 @@ def sales_analysis():
         # V-New: 按需載入 - 如果沒有任何篩選條件，顯示引導頁面
         if not data_range_param and not start_date and not end_date:
             sys_log.info("[Sales Analysis] 👋 首次進入頁面，等待用戶選擇篩選條件")
+            preview_cache_key = "sales_analysis:page_context:" + _sales_analysis_args_fingerprint(
+                table_name,
+                'preview',
+                SYSTEM_VERSION,
+            )
+            cached_preview_context = (
+                _get_sales_page_context_cache(preview_cache_key)
+                or _get_sales_shared_page_context_cache(preview_cache_key)
+            )
+            if cached_preview_context:
+                _set_sales_page_context_cache(preview_cache_key, cached_preview_context)
+                return render_template('sales_analysis.html', **cached_preview_context)
+
             preview_options = _preview_sales_filter_options(db.engine, table_name)
             preview_categories = preview_options['categories']
             preview_brands = preview_options['brands']
@@ -851,42 +864,61 @@ def sales_analysis():
             selected_metric = request.args.get('metric', 'amount')
             # 建立空的數據結構
             empty_data = {'labels': [], 'chart_values': [], 'values': [], 'metric_label': ''}
-            return render_template('sales_analysis.html',
-                                   no_filter=True,
-                                   table_name=table_name,
-                                   selected_metric=selected_metric,
-                                   total_records=0,
-                                   items=[],
-                                   kpi={'revenue': 0, 'qty': 0, 'count': 0, 'cost': 0, 'gross_margin': 0, 'gross_margin_rate': 0, 'avg_price': 0},
-                                   insights={},
-                                   abc_stats={},
-                                   vendor_stats=[],
-                                   seasonality_data={'datasets': [], 'yLabels': [], 'xLabels': []},
-                                   bar_data=empty_data,
-                                   cat_data=empty_data,
-                                   category_data=empty_data,
-                                   price_dist_data=empty_data,
-                                   scatter_data=[],
-                                   bcg_data=[],
-                                   dow_data=empty_data,
-                                   hourly_data=empty_data,
-                                   monthly_data=empty_data,
-                                   weekly_data=empty_data,
-                                   heatmap_data=[],
-                                   treemap_data=[],
-                                   cols={'name': True, 'amount': True, 'qty': True, 'cat': True, 'date': True,
-                                         'cost': True, 'profit': True, 'vendor': True, 'brand': True,
-                                         'return_qty': True, 'pid': True},
-                                   all_categories=preview_categories, all_brands=preview_brands, all_vendors=preview_vendors,
-                                   all_activities=preview_activities, all_payments=preview_payments, all_months=preview_months,
-                                   selected_category='all', selected_brand='all', selected_vendor='all',
-                                   selected_activity='all', selected_payment='all', selected_dow='all',
-                                   selected_hour='all', selected_month='all',
-                                   keyword='', min_price='', max_price='', min_margin='', max_margin='',
-                                   data_range_months=0, start_date='', end_date='',
-                                   db_data_range=db_data_range,
-                                   active_page='sales',
-                                   marketing_data=None)
+            preview_context = {
+                'no_filter': True,
+                'table_name': table_name,
+                'selected_metric': selected_metric,
+                'total_records': 0,
+                'items': [],
+                'kpi': {'revenue': 0, 'qty': 0, 'count': 0, 'cost': 0, 'gross_margin': 0, 'gross_margin_rate': 0, 'avg_price': 0},
+                'insights': {},
+                'abc_stats': {},
+                'vendor_stats': [],
+                'seasonality_data': {'datasets': [], 'yLabels': [], 'xLabels': []},
+                'bar_data': empty_data,
+                'cat_data': empty_data,
+                'category_data': empty_data,
+                'price_dist_data': empty_data,
+                'scatter_data': [],
+                'bcg_data': [],
+                'dow_data': empty_data,
+                'hourly_data': empty_data,
+                'monthly_data': empty_data,
+                'weekly_data': empty_data,
+                'heatmap_data': [],
+                'treemap_data': [],
+                'cols': {'name': True, 'amount': True, 'qty': True, 'cat': True, 'date': True,
+                         'cost': True, 'profit': True, 'vendor': True, 'brand': True,
+                         'return_qty': True, 'pid': True},
+                'all_categories': preview_categories,
+                'all_brands': preview_brands,
+                'all_vendors': preview_vendors,
+                'all_activities': preview_activities,
+                'all_payments': preview_payments,
+                'all_months': preview_months,
+                'selected_category': 'all',
+                'selected_brand': 'all',
+                'selected_vendor': 'all',
+                'selected_activity': 'all',
+                'selected_payment': 'all',
+                'selected_dow': 'all',
+                'selected_hour': 'all',
+                'selected_month': 'all',
+                'keyword': '',
+                'min_price': '',
+                'max_price': '',
+                'min_margin': '',
+                'max_margin': '',
+                'data_range_months': 0,
+                'start_date': '',
+                'end_date': '',
+                'db_data_range': db_data_range,
+                'active_page': 'sales',
+                'marketing_data': None,
+            }
+            _set_sales_page_context_cache(preview_cache_key, preview_context)
+            _set_sales_shared_page_context_cache(preview_cache_key, preview_context)
+            return render_template('sales_analysis.html', **preview_context)
 
         # 解析 data_range_months（有篩選時才處理）
         data_range_months = int(data_range_param or '0')