- **High-value intent signal:** A callback request is an explicit, human-initiated buying signal — the lead is inviting sales contact, which historically correlates with higher conversion and shortens the consideration cycle. 中文：主动请求回电是明确的人工购买信号，说明客户愿意推进沟通，通常转化率更高、决策周期更短。 - **Score stays in C because intent ≠ qualification:** Day 7 adds only +2 points (score = 2 vs. threshold 60). A single behavioral signal doesn't confirm budget, authority, need, or 100-unit scale, so AI avoids premature pool upgrade. 中文：加2分远低于C→B的60分门槛。单次行为不能证明预算、决策权、需求规模和100套采购意向，AI因此不做过早升级。 - **Trigger actions now (C-pool playbook):** Route callback request to success/inside sales within SLA; log contact reason and quantity interest; send a light qualification kit (capability overview + case study), not a full proposal yet. 中文：立即按SLA把回电请求分派给成功/内销团队；记录来电原因与采购数量意向；先发能力介绍+案例的轻量资料，暂不发正式方案。 - **Progression path to B:** If the call confirms need, budget window, and 100-unit distribution scope, log it as a qualified event → score jumps past 60 → auto C→B upgrade → proposal and follow-up tasks fire. 中文：若通话确认需求、预算窗口和100套分销规模，将其记为合格事件→分数越过60→自动C→B升级→触发方案与跟进任务。 - **Business outcome:** This keeps sales effort proportional to evidence, protects pipeline quality, and positions the 100-unit inquiry for a structured proposal once qualification is proven. 中文：让销售投入与证据匹配，保障管道质量，并在资格确认后为100套询盘铺好结构化方案路径。