- **Day 7 callback request = explicit buying intent, not passive browsing.** It moves the lead from "content consumer" to "wants human contact," the strongest signal short of a proposal request. 中文：Day 7 主动要求回电=明确的购买意向，而非被动浏览；这是除索要方案外最强的信号。 - **Score only reached 19 vs. 60 threshold, so it stays in C.** One high-value action lifts the score but doesn't prove sustained engagement (repeat visits, video completion, multi-stakeholder interest); AI avoids premature pool upgrade. 中文：分数仅19，远低于60的升级门槛，因此仍留在C池；单次高价值动作不足以证明持续兴趣，AI避免过早升级。 - **Trigger actions now: assign a success-team callback within 24h + log a sales follow-up task in CRM.** Keep nurture content flowing; do not yet issue a full B2B proposal. 中文：立即触发：24小时内安排成功团队回电+在CRM创建销售跟进任务；保持培育内容触达，暂不发送完整B2B方案。 - **Callback is the qualification gate for the 100-unit inquiry.** Use the call to confirm budget, timeline and decision-makers; if confirmed, fast-track score and upgrade C→B to unlock proposal generation. 中文：回电是100套分销询单的资格筛选关口；通过通话确认预算、时间线和决策人，确认后加速评分并升级C→B以解锁方案生成。 - **Business impact:** low-cost, high-signal action protects sales efficiency — reps engage only qualified intent, improving pipeline quality before committing proposal effort. 中文：业务影响：低成本高信号动作保护销售效率，让销售只投入合格意向，在投入方案资源前提升管道质量。