修复气泡底色问题

ui/settings_window.py

@@ -54,6 +54,7 @@ class SettingsWindow(QDialog):
             ("fa5s.rocket",       "启动"),
             ("fa5s.folder-open",  "缓存"),
             ("fa5s.heart",        "捐赠"),
+            ("fa5s.info-circle",  "关于"),
             ("fa5s.eraser",       "初始化"),
         ]
         self._nav_ready = False
@@ -79,6 +80,7 @@ class SettingsWindow(QDialog):
         self.stack.addWidget(self._page_startup())
         self.stack.addWidget(self._page_cache())
         self.stack.addWidget(self._page_donate())
+        self.stack.addWidget(self._page_about())
         self.stack.addWidget(self._page_initialization())
         # 此时 stack 已就绪，允许导航回调正常工作
         self._nav_ready = True
@@ -241,11 +243,24 @@ class SettingsWindow(QDialog):
         self._autostart_check.toggled.connect(self._on_autostart)
         layout.addWidget(self._autostart_check)
 
-        layout.addWidget(self._divider())
+        layout.addStretch()
+        return page
+
+    def _page_about(self) -> QWidget:
+        page = QWidget()
+        layout = QVBoxLayout(page)
+        layout.setContentsMargins(24, 20, 24, 20)
+        layout.setSpacing(16)
+
         layout.addWidget(self._section_title("关于"))
 
-        about = QLabel(f"{APP_NAME}  v{__VERSION__}\n整理你的桌面快捷方式，保持桌面干净。")
-        about.setStyleSheet("color:#888; font-size:12px; line-height:1.6;")
+        about = QLabel(
+            f"<b>{APP_NAME}</b>  v{__VERSION__}<br><br>"
+            "整理你的桌面快捷方式，保持桌面干净。<br><br>"
+            "快捷键：<b>Alt + `</b>  唤醒 / 隐藏主界面"
+        )
+        about.setStyleSheet("color:#888; font-size:12px; line-height:1.8;")
+        about.setTextFormat(Qt.TextFormat.RichText)
         layout.addWidget(about)
 
         layout.addStretch()