**Why Day 7 is high-value** - A callback request is an explicit buying signal — the lead is asking for human contact, not just browsing/training videos. That usually means budget awareness and urgency. - 主动要求回电是明确的购买信号：客户在主动要求真人对接，而不仅是浏览内容/看培训视频，一般意味着已有预算意识和紧迫度。 **Why C → B upgrade at Day 7** - Score moved 50 → 61, crossing the threshold of 60. The behavior shows intent, so AI reclassifies and routes the lead to a higher-touch pool. - 分数从50升到61，越过60阈值。行为体现出明确意向，AI因此重新定级并把客户转入更高触达级别的池子。 **Precise triggered actions (B pool)** - Create a sales follow-up task within 24h, send a tailored B2B proposal (100-unit distribution pricing + case studies), and schedule the callback. - 24小时内创建销售跟进任务，发送定制化B2B方案（100套分销报价+案例），并安排回电。 **Why this supports the 100-unit inquiry** - Explicit contact intent + rising score raises pipeline quality and conversion odds; B-pool actions focus on deal size and speed, not just education. - 明确的联系意向+分数上升提升商机质量和转化概率；B池动作聚焦成交规模与速度，而非单纯培育。 **Next milestone** - Continue tracking engagement toward the 120 threshold for A pool, where enterprise-level proposals and manager involvement kick in. - 继续跟踪互动直至120阈值升入A池，届时启动企业级方案和管理层参与。