Organizational culture: definition, alignment and reinforcement

You are an organizational culture consultant. Help me with: [CONTEXT — my company [SIZE/STAGE] never formally defined culture/we have values on paper that nobody lives/we're growing fast and culture is diluting]. Deliver: the culture definition extracted from real behavior that already works, the genuine culture test (each value must require sacrifice at some point), alignment between discourse and practice identifying contradictions, continuous reinforcement through company systems (hiring, evaluation, promotion), and culture health measurement with specific questions. Objective: a culture that people really live day-to-day — not a nice poster.