**1) Why the Day 7 callback request is high-value** - A callback request is a direct, self-initiated buying signal — the lead is asking for human contact, which typically correlates with near-term decision intent in B2B training deals. - 中文：客户主动要求回电，是明确的购买信号，说明其决策意愿已接近成熟阶段。 **2) Why the AI keeps this lead in C Pool for now** - Score jumped from 0 → 6, a strong signal but far below the 60-point C→B threshold; one intent action doesn't yet offset the absence of sustained engagement (views, video watches, repeat visits). - 中文：分数从0升至6，虽体现意向，但远未达到60分的升级线；单次行为不足以弥补持续互动数据的缺失。 **3) Precise nurturing actions to trigger now** - Assign a success-team callback within SLA (e.g., 24h), log call outcome, and send a tailored capability overview + indicative pricing — not a full proposal yet. - 中文：按SLA（如24小时内）安排成功团队回电，记录结果，并发送定制化能力介绍与参考报价，暂不提交完整方案。 **4) How this supports the 100-unit distribution inquiry** - The callback surfaces scope (audience, regions, timeline); if it confirms distribution-scale demand, escalate to B Pool and trigger a formal B2B proposal + sales follow-up task — protecting pipeline quality and sales efficiency. - 中文：通过回电明确规模（受众、区域、时间表）；若确认分销级需求，再升级至B池并触发正式方案与销售跟进，保障管道质量与销售效率。