Account data (email, nickname, country, password hash); learning records (quiz attempts, scores and progress); transaction records (order ID, product, amount, status — never full card details); and technical data such as access time, referrer, device and browser type.
用于账号登录与权限校验、答题与学习报告生成、订单与开票处理、客户服务与答疑、以及必要的服务改进。我们不会将您的信息出售给第三方。
To operate accounts and entitlements, generate study reports, process orders and invoices, provide customer support, and improve our services. We do not sell your information to third parties.
站内支付由 Paddle Billing（Merchant of Record）处理。我们仅接收订单号、金额与状态等必要信息，不会存储也不会接触您的完整银行卡号或安全码。税务计算与收据开票由 Paddle 依据其所在司法辖区法律完成。
Payments are processed by Paddle Billing as the Merchant of Record. We receive only the order ID, amount and status — we never store or see your full card number or CVV. Tax calculation and receipts are handled by Paddle under its applicable laws.
本平台不使用广告或跨站追踪 Cookie。站点访问统计由 Cloudflare Web Analytics 提供（无 Cookie、仅采集汇总用量数据）。您可在浏览器中禁用 Cookie，但这将影响登录状态的保持。
We use no advertising or cross-site tracking cookies. Site traffic measurement is provided by Cloudflare Web Analytics (cookieless, aggregated). Disabling cookies in your browser may affect keeping you signed in.
Cloudflare (hosting, DNS, cookieless analytics), Paddle (checkout, tax and receipts) and, if enabled, Tawk.to (live chat, used only to answer your enquiries).
您的数据存储于中国境内及/或境外云服务节点。我们采取访问控制、传输加密与最小权限等措施保护数据，防止未经授权的访问、泄露、篡改或丢失。
Data is stored on cloud infrastructure in and/or outside mainland China. We apply access control, encryption in transit and least-privilege practices to prevent unauthorised access, disclosure, alteration or loss.
您有权查询、更正、导出或删除您的个人信息，也有权撤回授权。发送邮件至 [email protected] 即可提出请求，我们将在 15 个工作日内答复。法律要求保留的记录（如交易凭证）可能无法立即删除。
You may access, correct, export or delete your personal data, and withdraw consent, by emailing [email protected]. We respond within 15 business days. Records we are legally required to retain (e.g. transaction receipts) may not be deleted immediately.
本平台面向具备相应民事行为能力的青少年与成年人。未成年人使用服务应在监护人同意与指导下进行。
The Platform is intended for adults and young people with sufficient legal capacity. Minors should use the services with the consent and supervision of a guardian.
本政策如有重大变更，我们会在本页面更新并标注新的更新日期。
Material changes will be published on this page with a revised "Updated" date.