- **Day 7 callback request = buying intent, not passive browsing.** It signals the lead wants human contact and is evaluating fit, which historically correlates with higher conversion and larger deal size. **中文：** 第7天主动要求回电说明已有明确购买意向，不再只是浏览内容；这种信号通常意味着更高转化率和更大订单潜力。 - **AI keeps them in C because 53 < 60 threshold.** The behavior is strong, but cumulative score still lacks enough evidence; the model avoids premature pool upgrade to protect sales efficiency. **中文：** AI仍放在C池，是因为53分未过60分门槛；虽然行为很强，但累计证据还不够，避免过早升级浪费销售资源。 - **Trigger immediate sales-assisted nurturing, not full B2B proposal yet.** Assign success team callback within 24h, confirm training needs, budget, timeline, and stakeholder map. **中文：** 应立即触发销售协助式培育，而不是马上发完整B2B方案；24小时内安排成功团队回电，确认需求、预算、时间表和决策链。 - **Prepare proposal as pre-upgrade asset.** Sales can send a tailored outline or mini-proposal, but formal B2B proposal should wait until score crosses 60 or discovery confirms 100-unit scope. **中文：** 方案可作为升级前预备动作：先发定制提纲或简版建议书；正式B2B方案待分数过60或确认100套规模后再发。 - **Next best actions: follow-up task + content track + score watch.** Create CRM follow-up, send enterprise training case study, and monitor for repeat high-value behavior to push C → B. **中文：** 下一步动作：创建CRM跟进任务、发送企业培训案例、持续监测高分行为，推动从C池升级到B池。 - **Business outcome: this protects pipeline quality while positioning for a 100-unit inquiry.** The callback uncovers scale, budget owner, and deployment timeline, making the eventual proposal more accurate and conversion-ready. **中文：** 业务结果：既保证管道质量，又为100套分销询盘做铺垫；通过回电摸清规模、预算方和落地时间，使后续方案更精准、更易成交。