I understand this concern deeply. For developers who've spent years mastering JavaScript patterns and component architectures, the idea of "returning to CSS" can feel like a step backward. They remember the pain points of global styles, specificity wars, and maintaining large CSS codebases.

But this perspective misses how fundamentally different modern CSS development has become. When you embrace CSS as your primary architecture, you're not just writing styles - you're building a design system. You can make typography following certain "musical" scales, colors maintaining precise OKLCH relationships, and spacing flowing from consistent ratios.

It's also about the simplicity in semantic HTML. Consider a real example: a typical React component library might need four different versions of text styling: Text, Description, DialogDescription, and AlertDescription. Each requires its own component definition, TypeScript interfaces, and style declarations. But in a CSS-driven system, this complexity vanishes. A single typographic scale handles all text needs through mathematical relationships.

This systematic approach leads to dramatically less code overall. Where JavaScript monoliths often grow to thousands of lines, a CSS-based system keeps in hundreds.

Nue is of course not for everyone. It's specifically designed for developers who see CSS as a creative medium - who get excited about the possibilities of container queries, custom properties, and calc() functions. For these developers, CSS isn't just a styling language - it's a powerful system for expressing design.