**Lead Nurturing Analysis – Global Skills (Day 7 Callback Request)** - **Day 7 behavior is high-value because it's an active buying signal.** A requested callback moves the lead from passive content consumption to direct sales engagement—stronger than views or video watches. **中文：** Day 7 主动请求回电属于明确购买信号，说明客户已从被动浏览转向主动销售接触，价值远高于普通观看或视频互动。 - **AI keeps the lead in C Pool because the predicted score is 53, below the 60 C→B threshold.** The trend is positive (+45 to +53), but the model waits for cumulative evidence before upgrading. **中文：** AI 仍将其保留在 C 池，因为预测分 53 未达到 60 的 C→B 升级门槛。分数趋势向好，但模型需要更充分的累计证据才升级。 - **Trigger precise actions now, even without upgrade:** assign a sales follow-up task within 24 hours, send a tailored B2B proposal, and route the callback to the success team with lead history. **中文：** 即使未升级也应立即触发精准动作：24 小时内创建销售跟进任务、发送定制化 B2B 方案，并将回电请求连同线索历史转交成功团队。 - **Use the callback to qualify the 100-unit distribution inquiry.** Ask about volume, timeline, delivery regions, and budget; if confirmed, the score should cross 60 and trigger automatic C→B upgrade. **中文：** 借回电机会确认 100 单元分销询盘：采购量、时间表、交付区域和预算。若确认，分数应突破 60，自动触发 C→B 升级。 - **Business outcome:** This sequence protects pipeline quality, shortens response time, and converts a C-pool lead into a qualified B-pool opportunity with larger deal potential. **中文：** 业务结果：该流程提升管线质量、缩短响应时间，并将 C 池线索转化为更具大单潜力的 B 池商机。