默认状态By default
无广告、无社交嵌入、无第三方行为追踪No ads, social embeds or third-party behavioral tracking
当前版本不使用 Google Analytics、Meta Pixel，也不嵌入知乎、小红书或 Bilibili 的第三方播放器/组件。外部平台以普通链接打开。
The current version does not use Google Analytics or Meta Pixel and does not embed third-party social widgets. External platforms are opened as ordinary links.
Local storage
只记住语言和主题偏好Only language and theme preferences
浏览器本地存储仅用于记住中文/英文以及深色/浅色模式选择，不用于跨站跟踪。
Browser local storage is used only to remember language and light/dark theme preferences, not for cross-site tracking.
外部链接External links
离开本站后适用目标平台自己的隐私政策Destination platforms have their own privacy policies
本站尽量不向外部链接发送来源页面信息，但打开知乎、小红书、Bilibili、Springer 等站点后，对方平台仍可按其自身规则处理访问数据。
This site minimizes referrer information sent to external links, but once you visit another platform, that platform may process data under its own policies.