diff --git a/tests/test_locale_manager.py b/tests/test_locale_manager.py
index eb58810..8e38a5e 100644
--- a/tests/test_locale_manager.py
+++ b/tests/test_locale_manager.py
@@ -65,5 +65,51 @@ def test_update_install_messages_exist_in_all_locales(self):
                     self.assertTrue(strings[key].strip())
 
 
+class AccessibilityLocaleTests(unittest.TestCase):
+    """The QML accessibility labels added in this batch reference these
+    keys. Missing them in a non-English locale silently regresses to a
+    KeyError-as-empty-string in the QML lookup ``s[...]``, which leaves
+    screen readers reading nothing for an interactive control.
+    """
+
+    REQUIRED_KEYS = frozenset({
+        "dialog.close",
+        "scroll.ignore_trackpad",
+        "scroll.ignore_trackpad_desc",
+        "scroll.smart_shift",
+    })
+    ENGLISH_VALUES = frozenset({
+        "Close",
+        "Ignore trackpad",
+        "Only respond to mouse events, not trackpad or Magic Mouse",
+    })
+
+    def test_required_accessibility_keys_present_in_all_locales(self):
+        for locale, strings in _TRANSLATIONS.items():
+            with self.subTest(locale=locale):
+                missing = self.REQUIRED_KEYS - strings.keys()
+                self.assertFalse(missing, f"{locale} missing keys: {missing}")
+                for key in self.REQUIRED_KEYS:
+                    self.assertTrue(
+                        strings[key].strip(),
+                        f"{locale}.{key} is blank",
+                    )
+
+    def test_chinese_locales_do_not_passthrough_english(self):
+        """Trackpad strings used to ship English text in the zh_CN and
+        zh_TW maps. Pin that they are now actually localized."""
+        for locale in ("zh_CN", "zh_TW"):
+            with self.subTest(locale=locale):
+                for key in (
+                    "scroll.ignore_trackpad",
+                    "scroll.ignore_trackpad_desc",
+                ):
+                    self.assertNotIn(
+                        _TRANSLATIONS[locale][key],
+                        self.ENGLISH_VALUES,
+                        f"{locale}.{key} still ships English",
+                    )
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/ui/locale_manager.py b/ui/locale_manager.py
index d6d1f34..f1a9898 100644
--- a/ui/locale_manager.py
+++ b/ui/locale_manager.py
@@ -216,6 +216,9 @@
         ),
         "accessibility.info": "System Settings -> Privacy & Security -> Accessibility",
 
+        # Common dialog chrome
+        "dialog.close": "Close",
+
         # About dialog
         "about.title": "About Mouser",
         "about.subtitle": "Runtime and build details for support and debugging.",
@@ -387,8 +390,8 @@
         "scroll.scroll_direction_desc": "\u53cd\u8f6c\u6eda\u52a8\u65b9\u5411\uff08\u81ea\u7136\u6eda\u52a8\uff09",
         "scroll.invert_vertical": "\u53cd\u8f6c\u5782\u76f4\u6eda\u52a8",
         "scroll.invert_horizontal": "\u53cd\u8f6c\u6c34\u5e73\u6eda\u52a8",
-        "scroll.ignore_trackpad": "Ignore trackpad",
-        "scroll.ignore_trackpad_desc": "Only respond to mouse events, not trackpad or Magic Mouse",
+        "scroll.ignore_trackpad": "\u5ffd\u7565\u89e6\u6478\u677f",
+        "scroll.ignore_trackpad_desc": "\u4ec5\u54cd\u5e94\u9f20\u6807\u4e8b\u4ef6\uff0c\u4e0d\u54cd\u5e94\u89e6\u6478\u677f\u6216 Magic Mouse",
         "scroll.dpi_note": "DPI \u66f4\u6539\u9700\u8981\u901a\u8fc7 HID++ \u4e0e\u8bbe\u5907\u901a\u4fe1\uff0c\u5c06\u5728\u77ed\u6682\u5ef6\u8fdf\u540e\u751f\u6548\u3002",
         "scroll.language": "\u8bed\u8a00",
         "scroll.language_desc": "\u9009\u62e9\u5e94\u7528\u7a0b\u5e8f\u7684\u663e\u793a\u8bed\u8a00\u3002",
@@ -426,6 +429,8 @@
         ),
         "accessibility.info": "\u7cfb\u7edf\u8bbe\u7f6e -> \u9690\u79c1\u4e0e\u5b89\u5168\u6027 -> \u8f85\u52a9\u529f\u80fd",
 
+        "dialog.close": "\u5173\u95ed",
+
         "about.title": "\u5173\u4e8e Mouser",
         "about.subtitle": "\u7528\u4e8e\u652f\u6301\u548c\u8c03\u8bd5\u7684\u8fd0\u884c\u65f6\u4e0e\u6784\u5efa\u4fe1\u606f\u3002",
         "about.version": "\u7248\u672c",
@@ -595,8 +600,8 @@
         "scroll.scroll_direction_desc": "\u53cd\u8f49\u6372\u52d5\u65b9\u5411\uff08\u81ea\u7136\u6372\u52d5\uff09",
         "scroll.invert_vertical": "\u53cd\u8f49\u5782\u76f4\u6372\u52d5",
         "scroll.invert_horizontal": "\u53cd\u8f49\u6c34\u5e73\u6372\u52d5",
-        "scroll.ignore_trackpad": "Ignore trackpad",
-        "scroll.ignore_trackpad_desc": "Only respond to mouse events, not trackpad or Magic Mouse",
+        "scroll.ignore_trackpad": "\u5ffd\u7565\u89f8\u63a7\u677f",
+        "scroll.ignore_trackpad_desc": "\u50c5\u56de\u61c9\u6ed1\u9f20\u4e8b\u4ef6\uff0c\u4e0d\u56de\u61c9\u89f8\u63a7\u677f\u6216 Magic Mouse",
         "scroll.dpi_note": "DPI \u66f4\u6539\u9700\u8981\u900f\u904e HID++ \u8207\u88dd\u7f6e\u901a\u8a0a\uff0c\u5c07\u5728\u77ed\u66ab\u5ef6\u9072\u5f8c\u751f\u6548\u3002",
         "scroll.language": "\u8a9e\u8a00",
         "scroll.language_desc": "\u9078\u64c7\u61c9\u7528\u7a0b\u5f0f\u7684\u986f\u793a\u8a9e\u8a00\u3002",
@@ -634,6 +639,8 @@
         ),
         "accessibility.info": "\u7cfb\u7d71\u8a2d\u5b9a -> \u96b1\u79c1\u6b0a\u8207\u5b89\u5168\u6027 -> \u8f14\u52a9\u4f7f\u7528",
 
+        "dialog.close": "\u95dc\u9589",
+
         "about.title": "\u95dc\u65bc Mouser",
         "about.subtitle": "\u63d0\u4f9b\u652f\u63f4\u8207\u9664\u932f\u7528\u7684\u57f7\u884c\u6642\u8207\u5efa\u7f6e\u8cc7\u8a0a\u3002",
         "about.version": "\u7248\u672c",
diff --git a/ui/qml/Main.qml b/ui/qml/Main.qml
index cef0f22..3df5a26 100644
--- a/ui/qml/Main.qml
+++ b/ui/qml/Main.qml
@@ -377,6 +377,10 @@ ApplicationWindow {
                            ? Qt.rgba(1, 1, 1, uiState.darkMode ? 0.08 : 0.65)
                            : "transparent"
 
+                    Accessible.role: Accessible.Button
+                    Accessible.name: s["dialog.close"]
+                    Accessible.onPressAction: aboutDialog.close()
+
                     AppIcon {
                         anchors.centerIn: parent
                         width: 14
diff --git a/ui/qml/ScrollPage.qml b/ui/qml/ScrollPage.qml
index 160aa4d..2172dd2 100644
--- a/ui/qml/ScrollPage.qml
+++ b/ui/qml/ScrollPage.qml
@@ -350,7 +350,7 @@ Item {
                             checked: backend.smartShiftEnabled
                             focusPolicy: Qt.StrongFocus
                             Material.accent: scrollPage.theme.accent
-                            Accessible.name: "SmartShift"
+                            Accessible.name: s["scroll.smart_shift"]
                             onClicked: backend.setSmartShiftEnabled(checked)
                         }
                     }
@@ -472,6 +472,12 @@ Item {
                                                   ? scrollPage.theme.accent
                                                   : scrollPage.theme.border
 
+                                    Accessible.role: Accessible.Button
+                                    Accessible.name: ssText.text
+                                    Accessible.checkable: true
+                                    Accessible.checked: backend.smartShiftMode === modelData.value
+                                    Accessible.onPressAction: backend.setSmartShift(modelData.value)
+
                                     Text {
                                         id: ssText
                                         anchors.centerIn: parent
@@ -658,6 +664,12 @@ Item {
 
                                 Behavior on color { ColorAnimation { duration: 120 } }
 
+                                Accessible.role: Accessible.Button
+                                Accessible.name: modelData.name
+                                Accessible.checkable: true
+                                Accessible.checked: lm.language === modelData.code
+                                Accessible.onPressAction: lm.setLanguage(modelData.code)
+
                                 Text {
                                     id: langText
                                     anchors.centerIn: parent