Envision an account icon that takes the shape of a stylized lock, with a bold, geometric design and a bright, neon color scheme, conveying a sense of security and protection, ideal for a financial or e-commerce platform.

Design an account icon that resembles a vintage-style key, with intricate details and ornate patterns, set against a warm, golden background, evoking a sense of nostalgia and reliability, perfect for an antique-inspired digital platform.

Create an illustration of a futuristic digital account icon, with a sleek and modern design, featuring a stylized letter 'A' made up of interconnected circuit boards, surrounded by a subtle glow and a blurred cityscape in the background, conveying a sense of innovation and technology.