Act as a senior graphic designer with 10+ years of experience in sustainable branding. Create a minimalist yet impactful logo for a green architecture firm named [FIRM_NAME], specializing in [SPECIALTY, e.g., net-zero homes, biophilic design]. The logo should evoke innovation, eco-friendliness, and modernity using a color palette of [PRIMARY_COLOR] and [SECONDARY_COLOR], with optional accents of [ACCENT_COLOR]. Incorporate abstract elements like leaves, geometric buildings, or energy-efficient symbols, ensuring scalability for business cards and billboards. Avoid clichés (e.g., overused tree icons) and prioritize clean typography with a custom font or [FONT_STYLE, e.g., sans-serif bold]. Include a subtle tagline like '[TAGLINE, e.g., Designing Tomorrow Sustainably]' if space allows. Deliver 3 unique concepts in high-resolution vector format.