diff --git a/api_join.go b/api_join.go
index f04766b..e5350df 100644
--- a/api_join.go
+++ b/api_join.go
@@ -71,7 +71,7 @@ func ApiSelectProfile(event *linebot.Event) {
 	}
 
 	go func(uid string) {
-		time.Sleep(time.Second * 5)
+		time.Sleep(time.Second * 3)
 		if _, err := SendMessage("", uid, DefaultMsg()); err != nil {
 			panic(err)
 		}
diff --git a/api_line.go b/api_line.go
index 73a559f..befa77a 100644
--- a/api_line.go
+++ b/api_line.go
@@ -47,6 +47,10 @@ func postback(event *linebot.Event) {
 		ApiSelectProfile(event)
 	case strings.HasPrefix(data, "claim="):
 		ApiPrepareClaim(event)
+	case strings.HasPrefix(data, "cat="):
+		ApiListProductOfCat(event)
+	case data == "list-tags":
+		ApiListCategories(event)
 	}
 }
 
@@ -61,17 +65,20 @@ func controller(event *linebot.Event) {
 
 	switch {
 	case msg.Text == "我想投保":
-		ApiListProduct(event)
+		ApiPreparePurchase(event)
 	case msg.Text == "辦理理賠":
 		ApiMyOrders(event)
 	case msg.Text == "我的資料":
 		ApiMe(event)
 	case msg.Text == "我的保單":
 		ApiMyOrders(event)
-	case strings.HasPrefix(msg.Text, "我是"):
-	case strings.HasPrefix(msg.Text, "我要理賠"):
+	case msg.Text == "為我推薦":
+		ApiListRecommanded(event)
 
-	case strings.HasPrefix(msg.Text, "幫我介紹"):
+	// discard
+	case strings.HasPrefix(msg.Text, "我是"):
+	case msg.Text == "我知道":
+	case msg.Text == "我要理賠":
 
 	default:
 		// route to watson
diff --git a/api_line_claim.go b/api_line_claim.go
index df075e7..10b8169 100644
--- a/api_line_claim.go
+++ b/api_line_claim.go
@@ -22,7 +22,7 @@ func ApiPrepareClaim(event *linebot.Event) {
 
 	for _, cat := range prod.Categories {
 		if cat.Name == "旅平" {
-			url := "https://bot.ework.tw/claim"
+			url := flagBase + "/claim"
 			button := linebot.NewButtonsTemplate("", "", "請上傳收據",
 				linebot.NewURIAction("開啟上傳頁面", url))
 			msg := linebot.NewTemplateMessage(fmt.Sprintf("請前往 %v 上傳收據", url), button)
diff --git a/api_line_products.go b/api_line_products.go
index 6355322..b05f21c 100644
--- a/api_line_products.go
+++ b/api_line_products.go
@@ -1,12 +1,63 @@
 package main
 
-import "github.com/line/line-bot-sdk-go/v7/linebot"
+import (
+	"strings"
 
-func ApiListProduct(event *linebot.Event) {
-	leftBtn := linebot.NewMessageAction("修改資料", "修改資料")
-	rightBtn := linebot.NewMessageAction("我的保單", "我的保單")
-	template := linebot.NewConfirmTemplate("請問想辦理甚麼服務?", leftBtn, rightBtn)
-	msg := linebot.NewTemplateMessage("請問想辦理甚麼服務?", template)
+	"github.com/line/line-bot-sdk-go/v7/linebot"
+)
+
+func ApiPreparePurchase(event *linebot.Event) {
+	text := "沒問題！您知道想投保甚麼險種嗎？我們很樂意為您介紹"
+	template := linebot.NewConfirmTemplate(text,
+		linebot.NewPostbackAction("我知道", "list-tags", "我知道", ""),
+		linebot.NewMessageAction("為我推薦", "為我推薦"))
+	msg := linebot.NewTemplateMessage(text, template)
+	if _, err := SendMessage(event.ReplyToken, event.Source.UserID, msg); err != nil {
+		panic(err)
+	}
+}
+
+func ApiListCategories(event *linebot.Event) {
+	var cats []Category
+	DB.Find(&cats)
+	buttons := make([]*linebot.QuickReplyButton, len(cats))
+
+	for i, cat := range cats {
+		buttons[i] = linebot.NewQuickReplyButton("",
+			linebot.NewPostbackAction(cat.Name, "cat="+cat.Name, "", "險種: "+cat.Name))
+	}
+	msg := linebot.NewTextMessage("請選擇險種。").WithQuickReplies(
+		linebot.NewQuickReplyItems(buttons...),
+	)
+	if _, err := SendMessage(event.ReplyToken, event.Source.UserID, msg); err != nil {
+		panic(err)
+	}
+}
+func ApiListProductOfCat(event *linebot.Event) {
+	data := event.Postback.Data
+	data = strings.TrimPrefix(data, "cat=")
+
+	msg := linebot.NewTextMessage(data + ":")
+	if _, err := SendMessage(event.ReplyToken, event.Source.UserID, msg); err != nil {
+		panic(err)
+	}
+}
+
+func ApiGetProduct(event *linebot.Event) {}
+
+func ApiListRecommanded(event *linebot.Event) {
+	var prods []Product
+	DB.Limit(10).Find(&prods, "id not in (select product_id from orders where user_id = ?)", event.Source.UserID)
+
+	// sort for target user
+
+	// send slide
+
+	text := "您的推薦"
+	leftBtn := linebot.NewMessageAction("修改資料", "修改資料")
+	rightBtn := linebot.NewMessageAction("我的保單", "我的保單")
+	template := linebot.NewConfirmTemplate(text, leftBtn, rightBtn)
+	msg := linebot.NewTemplateMessage(text, template)
 	if _, err := SendMessage(event.ReplyToken, event.Source.UserID, msg); err != nil {
 		panic(err)
 	}
diff --git a/api_line_user.go b/api_line_user.go
index ea08986..9df46d2 100644
--- a/api_line_user.go
+++ b/api_line_user.go
@@ -3,7 +3,7 @@ package main
 import "github.com/line/line-bot-sdk-go/v7/linebot"
 
 func ApiMe(event *linebot.Event) {
-	leftBtn := linebot.NewURIAction("修改資料", "https://bot.ework.tw/profile")
+	leftBtn := linebot.NewURIAction("修改資料", flagBase+"/profile")
 	rightBtn := linebot.NewMessageAction("我的保單", "我的保單")
 	template := linebot.NewConfirmTemplate("請問想辦理甚麼服務?", leftBtn, rightBtn)
 	msg := linebot.NewTemplateMessage("請問想辦理甚麼服務?", template)
@@ -17,7 +17,9 @@ func ApiMyOrders(event *linebot.Event) {
 	DB.Order("product_id").Find(&orders, "user_id = ?", event.Source.UserID)
 
 	if len(orders) == 0 {
-		msg := linebot.NewTextMessage("您目前沒有保單, 歡迎前往「我想投保」專區選取保單。")
+		text := "您目前沒有保單喲, 歡迎前往投保專區選取保單。"
+		tmp := linebot.NewButtonsTemplate("", "", text, linebot.NewMessageAction("帶我前往", "我想投保"))
+		msg := linebot.NewTemplateMessage(text, tmp)
 		if _, err := SendMessage(event.ReplyToken, event.Source.UserID, msg); err != nil {
 			panic(err)
 		}
@@ -34,7 +36,7 @@ func ApiMyOrders(event *linebot.Event) {
 		for i, prod := range products {
 			columns[i] = linebot.NewCarouselColumn(
 				prod.Img, prod.Name, prod.Brief,
-				linebot.NewURIAction("保單詳細", "https://bot.ework.tw/product"),
+				linebot.NewURIAction("保單詳細", flagBase+"/product"),
 				linebot.NewPostbackAction("我要理賠", "claim="+prod.Name, "我要理賠", ""),
 				// linebot.NewPostbackAction("我是"+prof.Name, "select="+prof.Name, "我是"+prof.Name, ""),
 			)
diff --git a/assets/asset.go b/assets/asset.go
new file mode 100644
index 0000000..6db2b46
--- /dev/null
+++ b/assets/asset.go
@@ -0,0 +1,6 @@
+package asset
+
+import "embed"
+
+//go:embed *
+var FS embed.FS
diff --git a/assets/brown.jpg b/assets/brown.jpg
new file mode 100644
index 0000000..c13d853
Binary files /dev/null and b/assets/brown.jpg differ
diff --git a/files.go b/files.go
index 087be10..fa4fef4 100644
--- a/files.go
+++ b/files.go
@@ -1,15 +1,17 @@
 package main
 
-import _ "embed"
+import (
+	_ "embed"
+)
 
-//go:embed assets/check.html
+//go:embed tmpl/check.html
 var check_web []byte
 
-//go:embed assets/profile.html
+//go:embed tmpl/profile.html
 var profile_web []byte
 
-//go:embed assets/claim.html
+//go:embed tmpl/claim.html
 var claim_web []byte
 
-//go:embed assets/product.html
+//go:embed tmpl/product.html
 var product_web []byte
diff --git a/main.go b/main.go
index c856999..0d9dc63 100644
--- a/main.go
+++ b/main.go
@@ -4,6 +4,8 @@ import (
 	"encoding/base64"
 	"flag"
 	"fmt"
+	"net/http"
+	asset "talent/assets"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -14,6 +16,7 @@ var (
 	flagAddr    string
 	flagDev     bool
 	flagMigrate bool
+	flagBase    string
 
 	DB_HOST   string
 	DB_USER   string
@@ -34,6 +37,7 @@ var (
 
 func init() {
 	flag.StringVar(&flagAddr, "addr", "0.0.0.0:8000", "address to listen on.")
+	flag.StringVar(&flagBase, "base", "https://bot.ework.tw", "base url.")
 	flag.BoolVar(&flagDev, "dev", false, "is dev mode")
 	flag.BoolVar(&flagMigrate, "migrate", false, "migrate database")
 
@@ -92,6 +96,10 @@ func main() {
 	hook := server.Group("bot")
 	hook.POST("/", webhook)
 
+	// setup static files
+	server.StaticFS("static", http.FS(asset.FS))
+	server.Static("attachment", "attachment")
+
 	// start server
 	log.Info().Msgf("serving on %v", flagAddr)
 	if err := server.Run(flagAddr); err != nil {
diff --git a/build.sh b/scripts/build.sh
similarity index 100%
rename from build.sh
rename to scripts/build.sh
diff --git a/deploy.sh b/scripts/deploy.sh
similarity index 100%
rename from deploy.sh
rename to scripts/deploy.sh
diff --git a/run.sh b/scripts/run.sh
similarity index 100%
rename from run.sh
rename to scripts/run.sh
diff --git a/assets/check.html b/tmpl/check.html
similarity index 100%
rename from assets/check.html
rename to tmpl/check.html
diff --git a/assets/claim.html b/tmpl/claim.html
similarity index 100%
rename from assets/claim.html
rename to tmpl/claim.html
diff --git a/assets/product.html b/tmpl/product.html
similarity index 100%
rename from assets/product.html
rename to tmpl/product.html
diff --git a/assets/profile.html b/tmpl/profile.html
similarity index 100%
rename from assets/profile.html
rename to tmpl/profile.html