Tailwind CSS v4: The Shift to CSS-First Utility Architectures

The CSS Compiler Evolution\nTailwind CSS v4 completely removes the need for javascript-based config files. The configuration is now defined directly inside the CSS stylesheet.\n\n### Modern Features\n1. **PostCSS-free Rust Engine**: Builds up to 10x faster.\n2. **Native CSS Variables Integration**: Fully custom design system tokens declared inside CSS.\n3. **Improved Container Queries**: Build layouts responsive to element width, not just screen width.\n\n### The Next Generation\nThis release marks the future of styling, bringing utility-first closer to standard CSS.