Two-tier navigation menu with dropdowns

This component implements a responsive two-tier navigation menu with dropdown submenus. It includes: - A top navbar with currency selector, account links, and cart icon - A secondary navbar with logo, top-level links with dropdowns, search icon, and account/cart links - Dropdown submenus that display on hover/focus of top-level links - Mobile menu toggle that reveals an off-canvas slide-out menu on small screens - Breadcrumb navigation indicating page hierarchy - Footer with account, service, company, and social links The component is fully responsive, adapting the layout across mobile, tablet, and desktop screen sizes. Interactions are indicated with hover and focus states. It demonstrates common patterns for navigation in an e-commerce site.