This is the rulebook for teams building production Shopify themes who want to avoid the CSS soup and jQuery spaghetti that plagues most Liquid projects. It enforces BEM naming, design token systems with CSS custom properties, and Web Components instead of framework dependencies. The progressive enhancement approach is solid: semantic HTML first, then CSS, then JavaScript with native browser APIs only. Worth noting it handles the gotcha that `{% stylesheet %}` tags don't process Liquid variables, so you need inline styles for dynamic values. The defensive CSS patterns and logical properties for RTL support show this was written by someone who's debugged merchant storefronts at 2am. If you're building themes that need to scale across brands or survive a few years of maintenance, this keeps things sane.
npx skills add https://github.com/benjaminsehl/liquid-skills --skill liquid-theme-standards