Design a modern and professional logo for a finance app that incorporates a mix of numerical and typographic elements, conveying a sense of sophistication, security, and innovation, within a circular shape with a subtle grid pattern in the background to represent order and precision, such as a stylized combination of the letters FA for Financial Authority or _FA enclosed within a circle with numerical patterns, and using shades of blue and gold to convey trust, reliability and growth.

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Design a modern and professional logo for a finance app that incorporates a mix of numerical and typographic elements, conveying a sense of sophistication, security, and innovation, within a circular shape with a subtle grid pattern in the background to represent order and precision, such as a stylized combination of the letters FA for Financial Authority or _FA enclosed within a circle with numerical patterns, and using shades of blue and gold to convey trust, reliability and growth.