1. **"Callback request" is high-value because it signals active buying intent**, moving from passive content consumption to direct engagement with the sales team. **“申请回电”是高价值行为，表明客户从被动浏览转向主动对接销售，购买意向明确。** 2. **AI upgrades from C→B because the Day 7 score (61) crosses the 60-point threshold**, driven by cumulative behavior (score 50) plus the high-value callback action (+11), indicating readiness for deeper engagement. **AI将客户从C升级到B，因为第7天分数（61分）突破60分阈值，累积行为（50分）加上高价值回电行为（+11分）显示客户已准备好进一步互动。** 3. **Triggered actions should include: (a) send a tailored B2B proposal, (b) schedule a success team callback within 24 hours, (c) assign a named account manager for follow-up.** **触发行动应包括：(a) 发送定制化B2B方案，(b) 24小时内安排成功团队回电，(c) 分配专属客户经理跟进。** 4. **This progression directly supports a 100-unit distribution deal because early, high-intent engagement typically yields 2-3x higher close rates** — the callback and proposal accelerate the evaluation-to-decision cycle. **此升级路径直接促进100单位分销订单，因为早期高意向客户成交率通常高出2-3倍——回电和方案加速从评估到决策的周期。** 5. **Next threshold (B→A at 120) suggests the lead should receive case studies and pricing negotiation prep**, ensuring they hit 120+ for final qualification and proposal close. **下一步从B到A的阈值（120分）表明需提供案例研究和价格谈判准备，确保客户达到120分以上，完成最终资格确认和方案签约。**