用户协议
服务内容
Lumen 灵光提供英语词汇、词根、语法与双语阅读的学习功能。你可以以游客身份使用，也可以用 Apple 账号登录以保存进度。
使用规范
- 仅供个人学习使用，请勿抓取、复制、转售或以其他方式滥用本应用的内容。
- 请勿利用本应用从事违法活动，或干扰服务的正常运行。
Lumen Pro 付费订阅
- Lumen Pro 提供包月（¥9.9/月）、包年（¥69.9/年）和永久（¥189，一次性购买）三种方案，各地区价格以 App Store 显示为准。
- 付款在确认购买时从你的 Apple 账户扣除。包月、包年为自动续订：除非在当前周期结束前至少 24 小时关闭自动续订，否则到期前 24 小时内会按相同价格自动续费。
- 你可以在「设置 → Apple ID → 订阅」中管理或取消订阅。取消后，已付费的周期内仍可继续使用 Pro。
- 退款由 Apple 按其政策处理，请通过 reportaproblem.apple.com 申请。换手机或重装后，可在 App 内「恢复购买」找回权益。
内容与版权
应用内的原创文章、译文、讲解与界面设计归 Lumen 所有；公有领域作品及第三方开放数据按其各自许可使用，来源列于 App 的「关于」页。
免责声明
学习内容仅供参考，我们尽力保证准确，但不对考试结果作任何保证。服务可能因维护或不可抗力暂时中断。
账号终止
你可以随时在设置中删除账号。违反本协议的，我们有权限制或终止服务。
协议变更
协议更新时会修改本页的生效日期；继续使用即表示接受更新后的协议。
Terms of Use
Lumen provides English vocabulary, word-root, grammar and bilingual reading study tools, usable as a guest or with Sign in with Apple. Use is for personal learning only; do not scrape, copy, resell or otherwise misuse the content. Original articles, translations and design belong to Lumen; public-domain works and open data are used under their own licenses, listed on the in-app About page. Content is provided for study purposes without guarantee of exam results. Lumen Pro is offered as Monthly (¥9.9/month), Yearly (¥69.9/year) and Lifetime (¥189, one-time purchase); local prices are shown in the App Store. Payment is charged to your Apple ID at confirmation of purchase. Monthly and Yearly renew automatically at the same price unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged within 24 hours before the period ends. Manage or cancel in Settings → Apple ID → Subscriptions; you keep Pro until the paid period ends. Refunds are handled by Apple at reportaproblem.apple.com. Use Restore Purchases in the app after reinstalling or switching devices. You may delete your account at any time in Settings. Continued use after an update to these terms means you accept them.