diff --git a/client/src/pdd_u2_purchase_reconcile_adapter.py b/client/src/pdd_u2_purchase_reconcile_adapter.py
index b26f9fc..a8c8db4 100644
--- a/client/src/pdd_u2_purchase_reconcile_adapter.py
+++ b/client/src/pdd_u2_purchase_reconcile_adapter.py
@@ -50,6 +50,8 @@ _PAYMENT_ACTION_MARKERS = ("立即支付", "确认支付", "输入支付密码")
 _UNPAID_MARKERS = ("待付款", "待支付")
 _NON_UNPAID_MARKERS = ("已付款", "交易成功", "交易完成", "已取消", "退款")
 _SAFE_NAVIGATION_LABELS = ("个人中心", "我的订单", "待付款")
+_ORDER_DETAIL_PAY_LABELS = ("去支付",)
+_ORDER_DETAIL_CANCEL_LABELS = ("取消订单",)
 
 
 class PddPurchaseReconcileError(RuntimeError):
@@ -83,6 +85,38 @@ def _subtree_text(node: ET.Element) -> str:
     )
 
 
+def _package_hint_from_tree(root: ET.Element) -> str:
+    """可靠控件树可以证明 PDD 在前台，避免错误的前台查询结果。"""
+
+    pdd_node_count = sum(
+        1
+        for node in root.iter("node")
+        if node.get("package") == PDD_PACKAGE_NAME
+    )
+    return PDD_PACKAGE_NAME if pdd_node_count >= 3 else ""
+
+
+def _label_count(root: ET.Element, targets: tuple[str, ...]) -> int:
+    return sum(
+        1
+        for node in root.iter("node")
+        if _label(node) in targets
+    )
+
+
+def _is_single_order_detail(root: ET.Element) -> bool:
+    """只在页面上只有一组订单操作时允许跨视口累积字段。"""
+
+    pay_count = _label_count(root, _ORDER_DETAIL_PAY_LABELS)
+    cancel_count = _label_count(root, _ORDER_DETAIL_CANCEL_LABELS)
+    order_numbers = {
+        match.group(1)
+        for node in root.iter("node")
+        if (match := _ORDER_NO_PATTERN.search(_label(node))) is not None
+    }
+    return pay_count == 1 and cancel_count <= 1 and len(order_numbers) <= 1
+
+
 def _parse_bounds(value: str) -> Optional[Bounds]:
     match = _BOUNDS_PATTERN.fullmatch(str(value or "").strip())
     if match is None:
@@ -141,6 +175,16 @@ def _parse_ordered_at(text: str) -> tuple[str, str]:
     return "", raw
 
 
+def _payment_status(text: str) -> str:
+    """只在页面有明确状态文字时返回状态。"""
+
+    if any(marker in text for marker in _NON_UNPAID_MARKERS):
+        return "other"
+    if any(marker in text for marker in _UNPAID_MARKERS):
+        return "unpaid"
+    return ""
+
+
 def parse_order_candidates(
     xml_data: str | bytes, query: PurchaseReconcileQuery
 ) -> tuple[PurchaseOrderCandidate, ...]:
@@ -184,12 +228,6 @@ def parse_order_candidates(
             for key, value in query.options.items()
             if str(value).strip() and str(value).strip() in card_text
         }
-        payment_status = (
-            "unpaid"
-            if any(marker in card_text for marker in _UNPAID_MARKERS)
-            and not any(marker in card_text for marker in _NON_UNPAID_MARKERS)
-            else "other"
-        )
         candidate = PurchaseOrderCandidate(
             order_no=order_no,
             goods_id=goods_match.group(1) if goods_match else "",
@@ -198,7 +236,7 @@ def parse_order_candidates(
             total_price_cent=_parse_money_cent(card_text),
             ordered_at=ordered_at,
             ordered_at_raw=ordered_at_raw,
-            payment_status=payment_status,
+            payment_status=_payment_status(card_text),
         )
         previous = parsed.get(order_no)
         if previous is None or previous == candidate:
@@ -206,6 +244,81 @@ def parse_order_candidates(
     return tuple(parsed.values())
 
 
+def _parse_order_detail_evidence(
+    root: ET.Element, query: PurchaseReconcileQuery
+) -> PurchaseOrderCandidate:
+    """读取单个订单详情当前视口；字段可以暂时不完整。"""
+
+    text = _subtree_text(root)
+    order_numbers = tuple(dict.fromkeys(_ORDER_NO_PATTERN.findall(text)))
+    goods_match = _GOODS_ID_PATTERN.search(text)
+    ordered_at, ordered_at_raw = _parse_ordered_at(text)
+    options = {
+        key: value
+        for key, value in query.options.items()
+        if str(value).strip() and str(value).strip() in text
+    }
+    return PurchaseOrderCandidate(
+        order_no=order_numbers[0] if len(order_numbers) == 1 else "",
+        goods_id=goods_match.group(1) if goods_match else "",
+        options=options,
+        quantity=_parse_quantity(text),
+        total_price_cent=_parse_money_cent(text),
+        ordered_at=ordered_at,
+        ordered_at_raw=ordered_at_raw,
+        payment_status=_payment_status(text),
+    )
+
+
+def _merge_order_evidence(
+    previous: PurchaseOrderCandidate,
+    current: PurchaseOrderCandidate,
+) -> Optional[PurchaseOrderCandidate]:
+    """合并同一订单的相邻视口；关键字段冲突时拒绝合并。"""
+
+    scalar_fields = (
+        "order_no",
+        "goods_id",
+        "quantity",
+        "total_price_cent",
+        "ordered_at",
+        "ordered_at_raw",
+    )
+    values: dict[str, object] = {}
+    for field_name in scalar_fields:
+        old_value = getattr(previous, field_name)
+        new_value = getattr(current, field_name)
+        if old_value and new_value and old_value != new_value:
+            return None
+        values[field_name] = old_value or new_value
+
+    options = dict(previous.options)
+    for key, value in current.options.items():
+        if key in options and options[key] != value:
+            return None
+        options[key] = value
+
+    statuses = {
+        value
+        for value in (previous.payment_status, current.payment_status)
+        if value
+    }
+    if "other" in statuses:
+        payment_status = "other"
+    else:
+        payment_status = "unpaid" if "unpaid" in statuses else ""
+    return PurchaseOrderCandidate(
+        order_no=str(values["order_no"]),
+        goods_id=str(values["goods_id"]),
+        options=options,
+        quantity=int(values["quantity"]),
+        total_price_cent=int(values["total_price_cent"]),
+        ordered_at=str(values["ordered_at"]),
+        ordered_at_raw=str(values["ordered_at_raw"]),
+        payment_status=payment_status,
+    )
+
+
 class U2PddPurchaseReconcileAdapter(PddPurchaseReconcileAdapter):
     """只导航和滚动读取待付款订单，不包含任何订单写操作。"""
 
@@ -237,19 +350,47 @@ class U2PddPurchaseReconcileAdapter(PddPurchaseReconcileAdapter):
         device = self._connect()
         self._open_unpaid_orders(device)
         found: dict[str, PurchaseOrderCandidate] = {}
-        previous_signature = ""
+        detail_evidence: Optional[PurchaseOrderCandidate] = None
+        detail_context_valid = True
+        previous_xml = ""
         pages_scanned = 0
         for _ in range(self._max_pages):
             self._check_cancelled()
             xml_data = device.dump_hierarchy(compressed=False)
-            self._raise_for_special_page(_parse_xml(xml_data))
+            root = _parse_xml(xml_data)
+            self._raise_for_special_page(root)
             pages_scanned += 1
             for candidate in parse_order_candidates(xml_data, query):
-                found.setdefault(candidate.order_no, candidate)
-            signature = "|".join(sorted(found)) + f":{len(str(xml_data))}"
-            if signature == previous_signature:
+                previous = found.get(candidate.order_no)
+                merged = (
+                    _merge_order_evidence(previous, candidate)
+                    if previous is not None
+                    else candidate
+                )
+                if merged is not None:
+                    found[candidate.order_no] = merged
+
+            if detail_context_valid and _is_single_order_detail(root):
+                current_evidence = _parse_order_detail_evidence(root, query)
+                if detail_evidence is None:
+                    detail_evidence = current_evidence
+                else:
+                    merged = _merge_order_evidence(
+                        detail_evidence, current_evidence
+                    )
+                    if merged is None:
+                        detail_context_valid = False
+                        detail_evidence = None
+                    else:
+                        detail_evidence = merged
+            else:
+                detail_context_valid = False
+                detail_evidence = None
+
+            current_xml = str(xml_data)
+            if current_xml == previous_xml:
                 break
-            previous_signature = signature
+            previous_xml = current_xml
             width, height = device.window_size()
             device.swipe(
                 width // 2,
@@ -259,6 +400,15 @@ class U2PddPurchaseReconcileAdapter(PddPurchaseReconcileAdapter):
                 0.35,
             )
             self._settle()
+        if detail_context_valid and detail_evidence and detail_evidence.order_no:
+            previous = found.get(detail_evidence.order_no)
+            merged = (
+                _merge_order_evidence(previous, detail_evidence)
+                if previous is not None
+                else detail_evidence
+            )
+            if merged is not None:
+                found[detail_evidence.order_no] = merged
         return PurchaseReconcileScan(
             candidates=tuple(found.values()),
             diagnostics={
@@ -281,26 +431,32 @@ class U2PddPurchaseReconcileAdapter(PddPurchaseReconcileAdapter):
         return self._device
 
     def _open_unpaid_orders(self, device: Any) -> None:
-        current = device.app_current()
-        if str(current.get("package") or "") != PDD_PACKAGE_NAME:
-            device.app_start(PDD_PACKAGE_NAME)
-            self._settle()
+        root = _parse_xml(device.dump_hierarchy(compressed=False))
+        if not _package_hint_from_tree(root):
+            current = device.app_current()
+            if str(current.get("package") or "") != PDD_PACKAGE_NAME:
+                device.app_start(PDD_PACKAGE_NAME)
+                self._settle()
 
         opened_order_area = False
         for _ in range(6):
             self._check_cancelled()
-            current = device.app_current()
-            if str(current.get("package") or "") != PDD_PACKAGE_NAME:
-                raise PddPurchaseReconcileError(
-                    "RECONCILE_WRONG_APP", "核单时 PDD 不在前台"
-                )
             root = _parse_xml(device.dump_hierarchy(compressed=False))
+            if not _package_hint_from_tree(root):
+                current = device.app_current()
+                if str(current.get("package") or "") != PDD_PACKAGE_NAME:
+                    raise PddPurchaseReconcileError(
+                        "RECONCILE_WRONG_APP", "核单时 PDD 不在前台"
+                    )
             self._raise_for_special_page(root)
             combined = _subtree_text(root)
-            if opened_order_area and (
-                _ORDER_NO_PATTERN.search(combined)
-                or "暂无订单" in combined
-                or "暂无相关订单" in combined
+            if _is_single_order_detail(root) or (
+                opened_order_area
+                and (
+                    _ORDER_NO_PATTERN.search(combined)
+                    or "暂无订单" in combined
+                    or "暂无相关订单" in combined
+                )
             ):
                 return
             if any(marker in combined for marker in _PAYMENT_ACTION_MARKERS):
diff --git a/client/test/test_pdd_u2_purchase_reconcile_adapter.py b/client/test/test_pdd_u2_purchase_reconcile_adapter.py
index 27224ba..8709854 100644
--- a/client/test/test_pdd_u2_purchase_reconcile_adapter.py
+++ b/client/test/test_pdd_u2_purchase_reconcile_adapter.py
@@ -1,9 +1,20 @@
 """只读订单核对 XML 解析测试；不连接真实手机。"""
 
 import unittest
+from contextlib import AbstractContextManager
 
-from src.pdd_purchase_reconcile_adapter import PurchaseReconcileQuery
-from src.pdd_u2_purchase_reconcile_adapter import parse_order_candidates
+from src.pdd_purchase_reconcile_adapter import (
+    PurchaseOrderCandidate,
+    PurchaseReconcileQuery,
+)
+from src.pdd_u2_purchase_reconcile_adapter import (
+    U2PddPurchaseReconcileAdapter,
+    _is_single_order_detail,
+    _merge_order_evidence,
+    _parse_xml,
+    parse_order_candidates,
+)
+from src.purchase_reconcile_service import PurchaseReconcileService
 
 
 def query() -> PurchaseReconcileQuery:
@@ -28,6 +39,63 @@ def xml_card(text: str) -> str:
     )
 
 
+def xml_detail(text: str) -> str:
+    package = "com.xunmeng.pinduoduo"
+    return (
+        '<?xml version="1.0" encoding="UTF-8"?>'
+        '<hierarchy rotation="0">'
+        f'<node package="{package}" text="{text}" />'
+        f'<node package="{package}" text="去支付" />'
+        f'<node package="{package}" text="取消订单" />'
+        "</hierarchy>"
+    )
+
+
+class FakeSession(AbstractContextManager):
+    def __init__(self, device):
+        self.device = device
+
+    def __enter__(self):
+        return self.device
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        return None
+
+
+class FakeDeviceService:
+    def __init__(self, device):
+        self.device = device
+
+    def connect(self, device_address):
+        return FakeSession(self.device)
+
+
+class DetailDevice:
+    def __init__(self, pages):
+        self.pages = pages
+        self.page_index = 0
+        self.app_current_calls = 0
+        self.app_start_calls = 0
+        self.swipes = 0
+
+    def dump_hierarchy(self, compressed=False):
+        return self.pages[self.page_index]
+
+    def app_current(self):
+        self.app_current_calls += 1
+        return {"package": "com.android.settings"}
+
+    def app_start(self, package):
+        self.app_start_calls += 1
+
+    def window_size(self):
+        return 1080, 2400
+
+    def swipe(self, *args):
+        self.swipes += 1
+        self.page_index = min(self.page_index + 1, len(self.pages) - 1)
+
+
 class PddU2PurchaseReconcileAdapterTest(unittest.TestCase):
     def test_parser_extracts_only_required_unpaid_order_fields(self):
         candidates = parse_order_candidates(
@@ -70,6 +138,70 @@ class PddU2PurchaseReconcileAdapterTest(unittest.TestCase):
         self.assertEqual(candidates[0].goods_id, "")
         self.assertEqual(candidates[0].ordered_at, "")
 
+    def test_adapter_merges_one_order_detail_across_viewports(self):
+        device = DetailDevice(
+            [
+                xml_detail(
+                    "待付款 商品编号：737116531267 黑色 L "
+                    "共2件 合计 ¥84.00"
+                ),
+                xml_detail(
+                    "订单编号：ORDER-20260810 "
+                    "下单时间：2026-08-10 16:03:00"
+                ),
+            ]
+        )
+        adapter = U2PddPurchaseReconcileAdapter(
+            "serial",
+            device_service=FakeDeviceService(device),
+            settle_seconds=0,
+            max_pages=3,
+        )
+
+        scan = adapter.read_order_candidates(query())
+        adapter.close()
+
+        self.assertEqual(len(scan.candidates), 1)
+        candidate = scan.candidates[0]
+        self.assertEqual(candidate.order_no, "ORDER-20260810")
+        self.assertEqual(candidate.goods_id, "737116531267")
+        self.assertEqual(candidate.options, {"color": "黑色", "size": "L"})
+        self.assertEqual(candidate.quantity, 2)
+        self.assertEqual(candidate.total_price_cent, 8400)
+        self.assertEqual(candidate.ordered_at, "2026-08-10T08:03:00Z")
+        self.assertEqual(candidate.payment_status, "unpaid")
+        self.assertTrue(PurchaseReconcileService._candidate_matches(candidate, query()))
+        self.assertEqual(device.app_current_calls, 0)
+        self.assertEqual(device.app_start_calls, 0)
+
+    def test_conflicting_order_numbers_are_not_merged(self):
+        first = PurchaseOrderCandidate(
+            order_no="ORDER-A",
+            goods_id="737116531267",
+            payment_status="unpaid",
+        )
+        second = PurchaseOrderCandidate(
+            order_no="ORDER-B",
+            quantity=2,
+            total_price_cent=8400,
+            payment_status="unpaid",
+        )
+
+        self.assertIsNone(_merge_order_evidence(first, second))
+
+    def test_multiple_order_actions_disable_detail_evidence_merge(self):
+        root = _parse_xml(
+            '<hierarchy><node package="com.xunmeng.pinduoduo" '
+            'text="订单编号：ORDER-A" />'
+            '<node package="com.xunmeng.pinduoduo" text="去支付" />'
+            '<node package="com.xunmeng.pinduoduo" '
+            'text="订单编号：ORDER-B" />'
+            '<node package="com.xunmeng.pinduoduo" text="去支付" />'
+            "</hierarchy>"
+        )
+
+        self.assertFalse(_is_single_order_detail(root))
+
 
 if __name__ == "__main__":
     unittest.main()