diff --git a/android/app/src/main/java/cn/ilapage/goauto/agent/automation/PurchaseLiveAutomation.kt b/android/app/src/main/java/cn/ilapage/goauto/agent/automation/PurchaseLiveAutomation.kt
index b13d1dd..18779ff 100644
--- a/android/app/src/main/java/cn/ilapage/goauto/agent/automation/PurchaseLiveAutomation.kt
+++ b/android/app/src/main/java/cn/ilapage/goauto/agent/automation/PurchaseLiveAutomation.kt
@@ -163,9 +163,12 @@ class PurchaseLiveAutomation(
                 return unknown("PURCHASE_ORDER_UNEXPECTED_APP", "核单期间出现未授权应用")
             }
             if (restoredFromWechat) pddObservedAfterWechatRestore = true
-            val paymentVisible = isKnownPddPaymentActivity(snapshot)
             val orderContextVisible = currentLabels.any { label -> ORDER_CONTEXT_MARKERS.any(label::contains) }
             val unpaidContextVisible = currentLabels.any { label -> UNPAID_MARKERS.any(label::contains) }
+            // PDD can reuse its payment Activity for a read-only unpaid order page.
+            // Visible order-result evidence takes precedence over the Activity name:
+            // it permits only bounded reading gestures below, never a payment click.
+            val paymentVisible = isKnownPddPaymentActivity(snapshot) && !orderContextVisible && !unpaidContextVisible
             if (paymentVisible) {
                 if (!backedOutOfPayment) {
                     backedOutOfPayment = true
diff --git a/android/app/src/test/java/cn/ilapage/goauto/agent/PurchaseLiveAutomationTest.kt b/android/app/src/test/java/cn/ilapage/goauto/agent/PurchaseLiveAutomationTest.kt
index fe4a2f8..206f043 100644
--- a/android/app/src/test/java/cn/ilapage/goauto/agent/PurchaseLiveAutomationTest.kt
+++ b/android/app/src/test/java/cn/ilapage/goauto/agent/PurchaseLiveAutomationTest.kt
@@ -168,6 +168,22 @@ class PurchaseLiveAutomationTest {
         assertFalse(driver.clicked.any { it.contains("支付") })
     }
 
+    @Test
+    fun `unpaid order evidence on reused payment activity scrolls read only instead of backing out`() {
+        val driver = LiveDriver(postSubmitCaptureSequence = listOf("order-folded-payment-activity"))
+        val automation = PurchaseLiveAutomation(driver, pause = {})
+        val address = automation.updateShippingAddress("_cg59")
+        automation.finalConfirmation(input().copy(addressSuffix = "_cg59"), address)
+        automation.submitOrderOnce()
+
+        val order = automation.readOrderResult()
+
+        assertEquals("PDD-202608210001", order?.orderNo)
+        assertEquals(0, driver.postSubmitBackCount)
+        assertEquals(1, driver.genericSwipes)
+        assertFalse(driver.clicked.any { it.contains("支付") })
+    }
+
     @Test
     fun `ambiguous order detail entries stop without navigating`() {
         val driver = LiveDriver(orderDetailEntryAfterSubmit = true, duplicateOrderDetailEntry = true)
@@ -442,6 +458,9 @@ class PurchaseLiveAutomationTest {
             ))
             "order" -> snapshot(listOf(node("status", "待付款"), node("order", "订单号：PDD-202608210001"), node("time", "下单时间：2026-08-21 10:30:00"), node("pay", "立即支付", clickable = true)))
             "order-folded" -> snapshot(listOf(node("status", "待付款"), node("pay", "立即支付", clickable = true)))
+            "order-folded-payment-activity" -> UiSnapshot(PDD, "com.xunmeng.pinduoduo.app_pay.core.PayActivity", listOf(
+                node("status", "待付款"), node("pay", "立即支付", clickable = true),
+            ))
             "order-no-time" -> snapshot(listOf(node("status", "待付款"), node("order", "订单号：PDD-202608210001"), node("pay", "去支付", clickable = true)))
             "success" -> snapshot(buildList {
                 add(node("success-title", "购买成功"))
@@ -527,7 +546,7 @@ class PurchaseLiveAutomationTest {
         }
         override fun swipePurchase(direction: SwipeDirection, durationMs: Long): Boolean {
             genericSwipes++
-            if (page == "order-folded" && direction == SwipeDirection.UP) page = "order"
+            if (page in setOf("order-folded", "order-folded-payment-activity") && direction == SwipeDirection.UP) page = "order"
             return true
         }
         override fun swipePurchaseIn(target: SnapshotNode, direction: SwipeDirection, durationMs: Long): Boolean {