Complex sentence: Noted for her trademark bob cut and sunglasses, Wintour sought to revitalize the brand by making it younger and more approachable; she directed the focus towards new and accessible concepts of "fashion" for a wider audience.
Split into simpler sentences: Noted for her trademark bob and sunglasses, Wintour sought to revitalize the brand by making it younger and more approachable. To do so, the magazine focused on new and accessible concepts of "fashion" for a wider audience.