Design a modern and minimalist logo for a company named 'SENTINEL', an e-commerce platform offering a wide range of products under various private labels. The logo should appeal to a broad audience of general consumers. The design should be clean and simple, focusing on a graphical symbol rather than text. Consider incorporating the letter "S" " in an abstract way within the design. While there are no specific colors required, the overall look should be sleek and contemporary, similar to the aesthetic of the Apple logo. The logo should convey a sense of quality and versatility, reflecting the diverse product range offered by SENTINEL.