Create a realistic and visually appealing cover for an online course module on "Step-by-Step Guide to Buying Real Estate." The cover should feature a high-quality, photo-realistic image that clearly represents a step-by-step process for buying real estate. Use a modern and organized layout to depict each stage of the process: searching for properties, consulting with agents, signing documents, and receiving keys. Consider using a visual sequence, such as a series of icons or infographics, to illustrate these stages. Include subtle visual cues like property listings, contracts, and keys. Use a sophisticated color palette that conveys professionalism and opportunity, focusing on dark blue (Navy Blue), white, and gold. The style should be clean, minimalistic, and slightly futuristic, with no characters in the foreground. --ar 16:9  --s 750