generic-static-design-system

To build a static site with a pure CSS design system and no build tools, you can use custom properties for theming, `clamp()` for responsive typography, and CSS-only animations to maintain brand consistency without relying on JavaScript.

CSS-only animation for interactive elements works by applying specific class names, such as a 'pulse' animation class, directly in your HTML to trigger transitions like a 2-second duration pulse without requiring any JavaScript dependencies.

You do not need a framework to achieve responsive typography and accessible UI components; this design system provides pure CSS patterns using native features like `clamp()` and accessible structures for buttons and navigation.

The best way to optimize static HTML site performance for high Lighthouse scores is by utilizing minimalist CSS, targeting small file sizes, and implementing CSS-only interactions to eliminate render-blocking JavaScript.

You can use custom properties for theming across a static HTML and CSS website to define color tokens and design variables, ensuring strict brand guide adherence and efficient UI implementation.

You should not use a no-build-tool design system if your project requires complex state management, heavy JavaScript dependencies, or dynamic rendering capabilities that exceed the scope of minimalist static HTML and CSS.