**1) Why Day 7 behavior is high-value** - Completing a post-video survey signals active engagement + intent, not passive viewing — a strong buying signal. - 完成视频后问卷=主动投入时间表达意向，比单纯观看更能预测成交。 **2) Why AI upgrades C → B** - Day 7 predicted score = 98, crossing the 60 threshold; cumulative engagement (59 → 98) shows consistent momentum. - 预测分98超过60门槛，且分数持续上升，系统判定为高潜力线索，自动升级到B池。 **3) Triggered nurturing actions** - Send tailored B2B proposal + case studies; create sales follow-up task within 24–48h; enroll in B-pool drip (demo invite / pricing sheet). - 触发：发送定制方案与案例、48小时内销售跟进任务、进入B池培育序列（邀约演示/报价单）。 **4) Path to 100-unit distribution inquiry** - B-pool actions build trust and clarify volume/seat needs → qualified for Volume/Enterprise track, accelerating movement toward A pool (120) and a 100-unit deal. - 通过B池动作建立信任、明确采购规模，推动进入大客户/A池通道，加速转化为100套采购询盘。 **Net logic:** behavior → score 98 → C→B upgrade → proposal + follow-up → higher pipeline quality, faster conversion, larger deal size. 行为→分数→升级→动作→更大成交。