- **Day 7 behavior is high-intent, not high-volume.** A callback request is an explicit buying signal — the lead is inviting direct sales contact, which typically correlates with shorter sales cycles and higher conversion than passive content views. - 第7天的行为是明确的购买信号——客户主动要求回电，意味着愿意进入直接销售对话，通常对应更短的成交周期和更高的转化率，价值远高于单纯浏览内容。 - **Score still sits well below the C→B threshold (19 vs 60).** The AI weighs cumulative engagement; one strong signal lifts the score but doesn't yet justify a pool upgrade, keeping qualification disciplined and protecting sales capacity. - 当前分数19分，远低于C升B的60分门槛。AI基于累计互动评估，单一强信号能加分但不足以升级，从而保持资格筛选的严谨性并保护销售资源。 - **Trigger precise, low-cost actions now:** route the callback to the success team within SLA, log a sales follow-up task, and send a tailored capability deck or lightweight proposal aligned to their training needs. - 立即触发精准低成本动作：按SLA将回电转交成功团队、创建销售跟进任务，并发送契合其培训需求的定制能力介绍或轻量方案。 - **Nurture toward the 100-unit distribution inquiry:** use the callback to qualify scope, budget and decision timeline, then escalate to a formal B2B proposal and, if signals strengthen, fast-track a C→B upgrade. - 面向100单元分销询盘推进：借回电确认采购范围、预算与决策时间，再升级为正式B2B方案；若信号增强，可加速C→B升级。