**1) Why Day 7 callback request = high value** - It's an explicit buying signal: the lead voluntarily asks for human contact, shortens the sales cycle, and reveals an active need. - 这是明确的购买信号：客户主动要求人工联系，缩短成交周期，说明需求已激活。 **2) Why still in C Pool (no upgrade)** - Score only hits 7 vs. the 60 threshold; one strong signal doesn't override a cold baseline — AI weighs cumulative evidence + fit, not a single event. - 分数仅7分，远低于60分升级线；单次强信号不足以覆盖此前的冷启动基线，AI看的是累计证据+匹配度。 **3) Precise nurturing actions to trigger** - Route to success/sales team within SLA (e.g., 24h), log a callback task, and send a light qualification email to capture units/timeline. - 在SLA内（如24小时）分派给成功/销售团队，创建回访任务，并发送轻量资格确认邮件，采集采购数量与时间表。 **4) How this supports a 100-unit distribution inquiry** - A fast, human callback qualifies budget/scale early; if the 100-unit need is confirmed, it can jump the score past threshold → C→B upgrade → auto-generate B2B proposal and follow-up cadence. - 快速人工回访可提前确认预算与规模；若100套需求被确认，分数可越过阈值，触发C→B升级，自动生成B2B方案与跟进节奏。 **Business outcome:** behavior → score 7 → stays C → callback task triggered → early qualification → potential upgrade & proposal → higher-quality pipeline and larger deal size. **业务结果：** 行为→7分→留在C池→触发回访任务→早期资格确认→潜在升级与方案输出→提升管道质量与单笔成交规模。