Mobile Menu with Multi-Tier Navigation

This component implements a mobile menu with a multi-tiered navigation. It uses Tailwind utility classes like `bg-white`, `fixed`, `flex`, `space-y-6` etc. to create the menu structure. Some key aspects: - Uses `lg:hidden` to only show menu on mobile - Backdrop to overlay main content when menu is open - Animation for slide in/out of menu - Tab component for navigation categories - Nested lists for menu items under each category