diff --git a/client/src/util/select_color_size.py b/client/src/util/select_color_size.py
index 975191f..6489dee 100644
--- a/client/src/util/select_color_size.py
+++ b/client/src/util/select_color_size.py
@@ -653,6 +653,51 @@ def _color_swipe_y(root: ET.Element, region: Bounds) -> int:
     return region_center_y
 
 
+def _color_scroll_direction(
+    root: ET.Element,
+    region: Bounds,
+) -> Optional[str]:
+    """判断颜色容器的主要滚动方向；证据不足时不猜测。"""
+
+    option_bounds: list[Bounds] = []
+    for node in root.iter("node"):
+        if node.get("clickable") != "true" or not _is_available(node):
+            continue
+        bounds = _parse_bounds(node.get("bounds", ""))
+        if bounds is None or not _center_in(bounds, region):
+            continue
+        if _intersection_area(bounds, region) <= 0:
+            continue
+        option_bounds.append(bounds)
+
+    unique_bounds = list(dict.fromkeys(option_bounds))
+    if len(unique_bounds) < 2:
+        return None
+
+    left_span = max(item[0] for item in unique_bounds) - min(
+        item[0] for item in unique_bounds
+    )
+    top_span = max(item[1] for item in unique_bounds) - min(
+        item[1] for item in unique_bounds
+    )
+    width = region[2] - region[0]
+    height = region[3] - region[1]
+
+    # 单列纵向列表的按钮宽度可能随文字变化，所以比较左上角分布，
+    # 不能用按钮中心点误把长短不一的同列按钮当成多列。
+    if top_span >= 80 and top_span > max(80, left_span * 2):
+        return "vertical"
+    if left_span >= 80 and left_span > max(80, top_span * 2):
+        return "horizontal"
+
+    # 多行网格同时具有 x/y 分布，只在容器长宽给出强证据时决定方向。
+    if height >= width * 1.15 and top_span >= 80:
+        return "vertical"
+    if width >= height * 1.4 and left_span >= 80:
+        return "horizontal"
+    return None
+
+
 def _swipe_color_row(
     device: Any,
     root: ET.Element,
@@ -668,6 +713,21 @@ def _swipe_color_row(
     device.swipe(start_x, y, end_x, y, duration=0.4)
 
 
+def _swipe_panel_to_start(device: Any, region: Bounds) -> None:
+    """手指向下滑，让纵向规格容器回到颜色列表起点。"""
+
+    left, top, right, bottom = region
+    height = bottom - top
+    x = (left + right) // 2
+    device.swipe(
+        x,
+        top + int(height * 0.25),
+        x,
+        top + int(height * 0.82),
+        duration=0.35,
+    )
+
+
 def _swipe_panel_down(device: Any, region: Bounds) -> None:
     left, top, right, bottom = region
     height = bottom - top
@@ -689,7 +749,7 @@ def select_color(
     max_swipes: int = 15,
     action_delay: float = 0.5,
 ) -> bool:
-    """边横向滑动边刷新 XML，目标颜色充分可见后点击并验证选中。"""
+    """判断颜色列表方向，有界遍历后精确点击并验证目标颜色。"""
     if not target_color.strip():
         raise ValueError("target_color 不能为空")
 
@@ -713,11 +773,65 @@ def select_color(
     if selected:
         return True
     if target_is_static:
-        # 静态面板中目标已经出现，点击失败后继续横向滑动只会增加等待，
+        # 静态面板中目标已经出现，点击失败后继续滑动只会增加等待，
         # 还可能触碰其他控件；必须立即交给上层报告未确认。
         return False
     region = _horizontal_color_region(root, target_color) or region
 
+    direction = _color_scroll_direction(root, region)
+    if direction is None:
+        return False
+    if direction == "vertical":
+        # Adapter 正常会先把颜色标题恢复到顶部；独立调用若标题已经
+        # 滚出视口，则先有界回到起点，随后只向下扫描一次。
+        if _heading_bounds(root) is None:
+            previous_signature = _visible_signature(root, region)
+            unchanged_count = 0
+            for _ in range(max_swipes):
+                _swipe_panel_to_start(device, region)
+                time.sleep(action_delay)
+                root = _parse_xml(device.dump_hierarchy())
+                region = _target_scrollable_ancestor(root, target_color) or region
+                if _heading_bounds(root) is not None:
+                    break
+                signature = _visible_signature(root, region)
+                unchanged_count = (
+                    unchanged_count + 1
+                    if signature == previous_signature
+                    else 0
+                )
+                previous_signature = signature
+                if unchanged_count >= 2:
+                    break
+
+        previous_signature = _visible_signature(root, region)
+        unchanged_count = 0
+        for _ in range(max_swipes):
+            _swipe_panel_down(device, region)
+            time.sleep(action_delay)
+            root = _parse_xml(device.dump_hierarchy())
+            region = _target_scrollable_ancestor(root, target_color) or region
+
+            selected, root = _click_target_and_verify(
+                device,
+                root,
+                target_color,
+                region,
+                action_delay,
+                require_horizontal_safe=True,
+            )
+            if selected:
+                return True
+
+            signature = _visible_signature(root, region)
+            unchanged_count = (
+                unchanged_count + 1 if signature == previous_signature else 0
+            )
+            previous_signature = signature
+            if unchanged_count >= 2:
+                break
+        return False
+
     # 当前横向位置未知：先用手指向右滑到列表左端。每次刷新 XML 时，
     # _click_target_and_verify 都会遍历整个 RecyclerView 内的所有行。
     previous_signature = _visible_signature(root, region)
diff --git a/client/test/test_select_color_size.py b/client/test/test_select_color_size.py
index a0e07ed..33e2cfa 100644
--- a/client/test/test_select_color_size.py
+++ b/client/test/test_select_color_size.py
@@ -5,6 +5,8 @@ import unittest
 import xml.etree.ElementTree as ET
 
 from src.util.select_color_size import (
+    _color_scroll_direction,
+    _parse_xml,
     color_selection_failure_reason,
     normalize_spec_text,
     select_color,
@@ -50,6 +52,108 @@ class StaticColorDevice:
         self.swipes.append((args, kwargs))
 
 
+class ScrollColorDevice:
+    """模拟可横向或纵向滚动的颜色列表。"""
+
+    def __init__(
+        self,
+        direction: str,
+        target: str = "目标白色",
+        include_target: bool = True,
+    ) -> None:
+        self.direction = direction
+        self.target = target
+        self.include_target = include_target
+        self.page = 0
+        self.selected = False
+        self.clicks = []
+        self.swipes = []
+
+    def dump_hierarchy(self) -> str:
+        if self.direction == "horizontal":
+            start = self.page * 2
+            visible = [f"颜色{index}" for index in range(start + 1, start + 4)]
+            if self.page == 2 and self.include_target:
+                visible[-1] = self.target
+            options = []
+            for index, text in enumerate(visible):
+                left = 40 + index * 320
+                selected = ' selected="true"' if text == self.target and self.selected else ""
+                options.append(
+                    f'<node text="{text}" clickable="true"{selected} '
+                    f'bounds="[{left},1080][{left + 270},1190]" />'
+                )
+            container = f'''<node class="androidx.recyclerview.widget.RecyclerView"
+                    scrollable="true" bounds="[24,1040][1056,1240]">
+                    {''.join(options)}
+                  </node>'''
+        else:
+            visible = [f"颜色{index}" for index in range(1, 10)]
+            if self.page:
+                visible = [f"颜色{index}" for index in range(7, 14)] + [self.target]
+                if not self.include_target:
+                    visible[-1] = "颜色14"
+            options = []
+            for index, text in enumerate(visible):
+                top = 1050 + index * 110
+                selected = ' selected="true"' if text == self.target and self.selected else ""
+                options.append(
+                    f'<node text="{text}" clickable="true"{selected} '
+                    f'bounds="[36,{top}][850,{top + 85}]" />'
+                )
+            container = ''.join(options)
+
+        summary = f"已选：{self.target}" if self.selected else "请选择：颜色 尺码"
+        return f'''<hierarchy>
+          <node bounds="[0,0][1080,2340]">
+            <node class="android.widget.ScrollView" scrollable="true"
+                  bounds="[0,945][1080,2079]">
+              <node text="{summary}" bounds="[36,950][800,1000]" />
+              <node text="颜色 (14)" bounds="[36,971][216,1024]" />
+              {container}
+            </node>
+          </node>
+        </hierarchy>'''
+
+    def click(self, x: int, y: int) -> None:
+        self.clicks.append((x, y))
+        if self.target in self.dump_hierarchy():
+            self.selected = True
+
+    def swipe(self, x1, y1, x2, y2, duration=0.35) -> None:
+        self.swipes.append((x1, y1, x2, y2, duration))
+        if self.direction == "vertical" and abs(y2 - y1) > abs(x2 - x1):
+            self.page = 1 if y1 > y2 else 0
+        if self.direction == "horizontal" and abs(x2 - x1) > abs(y2 - y1):
+            self.page = min(2, self.page + 1) if x1 > x2 else max(0, self.page - 1)
+
+
+class AmbiguousGridDevice:
+    """模拟方向证据不足的正方形两行两列网格。"""
+
+    def __init__(self) -> None:
+        self.clicks = []
+        self.swipes = []
+
+    @staticmethod
+    def dump_hierarchy() -> str:
+        return '''<hierarchy><node bounds="[0,0][1080,2340]">
+          <node text="颜色 (8)" bounds="[36,820][220,880]" />
+          <node scrollable="true" bounds="[100,900][900,1700]">
+            <node text="颜色1" clickable="true" bounds="[140,940][360,1080]" />
+            <node text="颜色2" clickable="true" bounds="[540,940][760,1080]" />
+            <node text="颜色3" clickable="true" bounds="[140,1340][360,1480]" />
+            <node text="颜色4" clickable="true" bounds="[540,1340][760,1480]" />
+          </node>
+        </node></hierarchy>'''
+
+    def click(self, x: int, y: int) -> None:
+        self.clicks.append((x, y))
+
+    def swipe(self, *args, **kwargs) -> None:
+        self.swipes.append((args, kwargs))
+
+
 class StaticColorSelectionTest(unittest.TestCase):
     @classmethod
     def setUpClass(cls) -> None:
@@ -208,6 +312,114 @@ class StaticColorSelectionTest(unittest.TestCase):
             "target_ambiguous",
         )
 
+    def test_vertical_color_list_scrolls_down_to_target(self):
+        device = ScrollColorDevice("vertical")
+
+        selected = select_color(
+            device,
+            device.dump_hierarchy(),
+            device.target,
+            action_delay=0.001,
+        )
+
+        self.assertTrue(selected)
+        self.assertEqual(len(device.clicks), 1)
+        self.assertTrue(device.swipes)
+        self.assertTrue(
+            all(
+                abs(y2 - y1) > abs(x2 - x1)
+                for x1, y1, x2, y2, _duration in device.swipes
+            )
+        )
+
+    def test_horizontal_color_list_keeps_horizontal_scan(self):
+        device = ScrollColorDevice("horizontal")
+
+        selected = select_color(
+            device,
+            device.dump_hierarchy(),
+            device.target,
+            action_delay=0.001,
+        )
+
+        self.assertTrue(selected)
+        self.assertEqual(len(device.clicks), 1)
+        self.assertTrue(device.swipes)
+        self.assertTrue(
+            all(
+                abs(x2 - x1) > abs(y2 - y1)
+                for x1, y1, x2, y2, _duration in device.swipes
+            )
+        )
+
+    def test_ambiguous_grid_stops_without_swipe_or_click(self):
+        device = AmbiguousGridDevice()
+
+        selected = select_color(
+            device,
+            device.dump_hierarchy(),
+            "首屏外目标",
+            action_delay=0.001,
+        )
+
+        self.assertFalse(selected)
+        self.assertEqual(device.swipes, [])
+        self.assertEqual(device.clicks, [])
+
+    def test_grid_uses_container_shape_only_when_direction_is_clear(self):
+        xml_data = AmbiguousGridDevice.dump_hierarchy()
+        ambiguous_root = _parse_xml(xml_data)
+        self.assertIsNone(
+            _color_scroll_direction(ambiguous_root, (100, 900, 900, 1700))
+        )
+
+        tall_xml = xml_data.replace(
+            'bounds="[100,900][900,1700]"',
+            'bounds="[100,700][900,1900]"',
+        )
+        self.assertEqual(
+            _color_scroll_direction(
+                _parse_xml(tall_xml), (100, 700, 900, 1900)
+            ),
+            "vertical",
+        )
+
+        wide_xml = xml_data.replace(
+            'bounds="[100,900][900,1700]"',
+            'bounds="[20,900][1060,1500]"',
+        )
+        self.assertEqual(
+            _color_scroll_direction(
+                _parse_xml(wide_xml), (20, 900, 1060, 1500)
+            ),
+            "horizontal",
+        )
+
+    def test_vertical_list_stops_at_edge_without_approximate_click(self):
+        device = ScrollColorDevice(
+            "vertical",
+            target="不存在的近似颜色",
+            include_target=False,
+        )
+
+        selected = select_color(
+            device,
+            device.dump_hierarchy(),
+            device.target,
+            max_swipes=5,
+            action_delay=0.001,
+        )
+
+        self.assertFalse(selected)
+        self.assertEqual(device.clicks, [])
+        self.assertTrue(device.swipes)
+        self.assertTrue(
+            all(
+                abs(y2 - y1) > abs(x2 - x1)
+                for x1, y1, x2, y2, _duration in device.swipes
+            )
+        )
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/docs/client/06-quality-security.md b/docs/client/06-quality-security.md
index 5b87971..4b038b1 100644
--- a/docs/client/06-quality-security.md
+++ b/docs/client/06-quality-security.md
@@ -115,6 +115,10 @@ Client 不保存或读取 `purchase.live_*` 手工授权设置。`purchase_mode`
   当前前台应用，避免在部分真机上重复等待十秒以上。最终下单点击前仍必须单独
   查询前台应用。性能日志分别记录状态读取、颜色选择和尺码选择耗时。
 - 规格选择后读取最新控件树并验证选中状态。
+- 颜色规格可能是单行横向列表、单列纵向列表或多行网格。Client 必须先根据
+  同一滚动容器内候选坐标分布和容器形状判断主要方向，再按方向有界遍历；
+  方向证据不足时不滑动、不点击。找到目标后仍须通过精确或唯一繁简等价匹配，
+  不能用近似颜色代替任务规格。
 - 运行时规格解析请求必须在网络发送前写入独立 SQLite 记录；只调用一次专用命令，
   不轮询 Admin。只有 `matched` 响应的哈希、候选编号、原文和 options 都是本次候选的
   逐字副本时才继续。响应返回后重新完整遍历真机候选并复算哈希，页面、颜色或候选