Create a 12-slide Slidev deck for the Apex Industries board on the proposed acquisition of NanoTech Materials. Keep it formal and analytical, use the default theme, and make it feel like a board strategy briefing rather than a sales pitch. I need a clear recommendation backed by strategic fit, technology moat, valuation, return scenarios, key risks, and decision guardrails. Use data-dense tables where they help comparison, but keep the slides presentation-ready and easy to scan.