Main subject: Two-story residential building 3D isometric cross-section, covering functional spaces such as bedrooms and living rooms, equipped with various smart home appliances, garage with silver sports car and charging pile, blue and green light effect lines connecting all devices. Scene: Interior space of a home residential building, presenting a smart home and home energy management scenario. Style: 3D isometric minimalist tech style, cross-section visualization design. Color scheme: Light gray and white as base, dotted with bright blue and green light effect elements. Lighting: Overall soft and even light, light effect lines are transparent and bright, spatial hierarchy is clear. Composition: Isometric perspective panoramic layout, complete house structure, regular and balanced device arrangement. Purpose: Smart home promotion, clean home energy, whole-house energy system visualization design material.