- **Why Day 7 matters:** A callback request is an explicit buying signal—self-identified intent beats passive content views; it signals active evaluation and shortens the sales cycle by handing you a warm conversation. 中文：主动要求回电是明确的购买信号，比被动浏览更能说明客户已进入评估阶段，可直接缩短销售周期。 - **Why C → B upgrade:** Score jumped 54 → 72, crossing the 60 threshold—AI interprets the callback plus cumulative engagement as validated interest, moving the lead from nurture to active pursuit. 中文：分数从54升至72，越过60阈值；AI把回电与累计互动视为已验证兴趣，客户从培育池进入主动跟进阶段。 - **Precise actions to trigger:** Assign a success-team callback within 24h, send a tailored B2B proposal with volume-tier pricing (100-unit scenario), and create a sales follow-up task with a 3-day SLA. 中文：24小时内安排成功团队回电，发送含100套阶梯报价的定制方案，并创建3天内跟进的销售任务。 - **Path to 100-unit deal:** B-pool cadence keeps engagement warm while sales scopes distribution needs; next threshold (120) to A-pool unlocks executive-level support for enterprise-scale closure. 中文：B池节奏维持互动温度，销售同步摸清分销需求；冲上120分进入A池后可调用高管资源，推动企业级大单成交。