Develop a sustainable design strategy for: [PROJECT DESCRIPTION]. Goals: [LEED/LIVING BUILDING/NET ZERO/etc.]. Budget constraint: [LEVEL]. Climate zone: [ZONE]. Provide: 1) Passive design strategies appropriate for this climate, 2) Active systems recommendations with rough cost premiums, 3) Materials strategy (embodied carbon, local sourcing, durability), 4) Water conservation strategies, 5) Achievable certification levels with realistic path, 6) Which high-cost strategies have best ROI for this project type. Be specific — no generic green-washing.