diff --git a/README.md b/README.md
index 1bcf04f..90c47ec 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ go run ./cmd/updata_hfb
 
 启动后会打开窗口：
 
+- 上方“连接配置”默认折叠，填写过的内容会自动记住
 - `服务器`：默认 `http://127.0.0.1:8080`
 - `上传人`：对应服务端的 `uploaderName`
 - `上传密钥`：服务端外部上传密钥，未配置可留空
diff --git a/internal/app/gui.go b/internal/app/gui.go
index d7405c0..190529c 100644
--- a/internal/app/gui.go
+++ b/internal/app/gui.go
@@ -41,41 +41,38 @@ AWM子弹数量：80
 func Run() {
 	a := fyneapp.NewWithID("com.hfb.updata")
 	w := a.NewWindow("哈夫币外部上传")
-	w.Resize(fyne.NewSize(920, 760))
+	w.Resize(fyne.NewSize(980, 880))
+	prefs := a.Preferences()
 
 	serverEntry := widget.NewEntry()
-	serverEntry.SetText(envDefault("HFB_SERVER", "http://127.0.0.1:8080"))
+	serverEntry.SetText(prefStringWithFallback(prefs, "server", envDefault("HFB_SERVER", "http://127.0.0.1:8080")))
 	serverEntry.SetPlaceHolder("例如：http://127.0.0.1:8080")
 
 	uploaderEntry := widget.NewEntry()
-	uploaderEntry.SetText(strings.TrimSpace(os.Getenv("HFB_UPLOADER_NAME")))
+	uploaderEntry.SetText(prefStringWithFallback(prefs, "uploader", strings.TrimSpace(os.Getenv("HFB_UPLOADER_NAME"))))
 	uploaderEntry.SetPlaceHolder("后台上传管理员名称")
 
 	secretEntry := widget.NewEntry()
 	secretEntry.Password = true
-	secretEntry.SetText(strings.TrimSpace(os.Getenv("HFB_UPLOAD_SECRET")))
+	secretEntry.SetText(prefStringWithFallback(prefs, "secret", strings.TrimSpace(os.Getenv("HFB_UPLOAD_SECRET"))))
 	secretEntry.SetPlaceHolder("未配置密钥可留空")
 
 	timeoutEntry := widget.NewEntry()
-	timeoutEntry.SetText("15s")
+	timeoutEntry.SetText(prefStringWithFallback(prefs, "timeout", "15s"))
 	timeoutEntry.SetPlaceHolder("例如：15s")
 
 	dataEntry := widget.NewMultiLineEntry()
 	dataEntry.Wrapping = fyne.TextWrapWord
-	dataEntry.SetMinRowsVisible(18)
+	dataEntry.SetMinRowsVisible(14)
 	dataEntry.SetPlaceHolder(sampleText)
 
-	resultEntry := widget.NewMultiLineEntry()
-	resultEntry.Wrapping = fyne.TextWrapWord
-	resultEntry.SetMinRowsVisible(8)
-	resultEntry.Disable()
+	resultView := widget.NewRichTextWithText("")
+	resultView.Wrapping = fyne.TextWrapWord
 
 	statusLabel := widget.NewLabel("准备就绪")
 
 	setResult := func(text string) {
-		resultEntry.Enable()
-		resultEntry.SetText(text)
-		resultEntry.Disable()
+		resultView.ParseMarkdown("```json\n" + strings.TrimSpace(text) + "\n```")
 	}
 	setBusy := func(uploadBtn *widget.Button, previewBtn *widget.Button, busy bool) {
 		if busy {
@@ -111,17 +108,6 @@ func Run() {
 		}, w)
 	})
 
-	sampleBtn := widget.NewButton("填入示例", func() {
-		dataEntry.SetText(sampleText)
-		statusLabel.SetText("已填入示例数据")
-	})
-
-	clearBtn := widget.NewButton("清空", func() {
-		dataEntry.SetText("")
-		setResult("")
-		statusLabel.SetText("已清空")
-	})
-
 	previewBtn = widget.NewButton("预览 JSON", func() {
 		req, err := buildRequest(uploaderEntry.Text, dataEntry.Text)
 		if err != nil {
@@ -182,26 +168,34 @@ func Run() {
 	})
 	uploadBtn.Importance = widget.HighImportance
 
-	form := widget.NewForm(
+	serverEntry.OnChanged = func(s string) { prefs.SetString("server", strings.TrimSpace(s)) }
+	uploaderEntry.OnChanged = func(s string) { prefs.SetString("uploader", strings.TrimSpace(s)) }
+	secretEntry.OnChanged = func(s string) { prefs.SetString("secret", strings.TrimSpace(s)) }
+	timeoutEntry.OnChanged = func(s string) { prefs.SetString("timeout", strings.TrimSpace(s)) }
+
+	configForm := widget.NewForm(
 		widget.NewFormItem("服务器", serverEntry),
 		widget.NewFormItem("上传人", uploaderEntry),
 		widget.NewFormItem("上传密钥", secretEntry),
 		widget.NewFormItem("超时时间", timeoutEntry),
 	)
-	toolbar := container.NewHBox(loadBtn, sampleBtn, clearBtn, previewBtn, uploadBtn)
+	configAccordion := widget.NewAccordion(
+		widget.NewAccordionItem("连接配置", configForm),
+	)
+	configAccordion.Close(0)
+	toolbar := container.NewHBox(loadBtn, previewBtn, uploadBtn)
 	content := container.NewBorder(
 		nil,
 		container.NewVBox(statusLabel),
 		nil,
 		nil,
 		container.NewVScroll(container.NewVBox(
-			widget.NewLabel("连接配置"),
-			form,
+			configAccordion,
 			toolbar,
 			widget.NewLabel("账号数据"),
 			dataEntry,
 			widget.NewLabel("结果"),
-			resultEntry,
+			newMinHeightScroll(resultView, 420),
 		)),
 	)
 
@@ -234,3 +228,41 @@ func envDefault(key string, fallback string) string {
 	}
 	return value
 }
+
+func prefStringWithFallback(prefs fyne.Preferences, key, fallback string) string {
+	if prefs == nil {
+		return fallback
+	}
+	value := strings.TrimSpace(prefs.String(key))
+	if value != "" {
+		return value
+	}
+	return fallback
+}
+
+type minHeightScroll struct {
+	widget.BaseWidget
+	scroll    fyne.CanvasObject
+	minHeight float32
+}
+
+func newMinHeightScroll(content fyne.CanvasObject, minHeight float32) *minHeightScroll {
+	panel := &minHeightScroll{
+		scroll:    container.NewVScroll(content),
+		minHeight: minHeight,
+	}
+	panel.ExtendBaseWidget(panel)
+	return panel
+}
+
+func (p *minHeightScroll) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(p.scroll)
+}
+
+func (p *minHeightScroll) MinSize() fyne.Size {
+	size := p.scroll.MinSize()
+	if size.Height < p.minHeight {
+		size.Height = p.minHeight
+	}
+	return size
+}