A4 Minimalist Ring Binder Design

I need a design for an A4 ring binder intended for internal documentation. The style should be minimalistic and clean, perfectly balancing simplicity with sophistication. Your task will be to create a professional, sleek, minimalist design that can hold our internal documents in a neat, orderly fashion.

Ideal skills for this project include:
- Graphic Design
- Experience in creating product packaging or binder designs
- Proficiency in design software (e.g., Adobe Illustrator, InDesign)
- Understanding of minimalistic design principles.

Please include a portfolio of your previous work, particularly any similar designs.