Single-column layout (max-width ~2xl), monospace font throughout, orange/cream/muted color palette defined as CSS custom properties so dark/light mode is just swapping variable values, not duplicating styles.
Theme toggle persists to localStorage and applies before first paint (inline script in <head>) to avoid a flash of the wrong theme.
Styling is Tailwind CSS via CDN — no build step for CSS, keeps the whole site to a single zola build.