The main section is a 3x3 grid on large screens, a 2x1 stack on phones. The left column is a fluted wall; the navigator covers it when open, and covers the top cell on mobile. The centre plate is the stage — htmx swaps fragments into it, nothing more.

The look is Doric: limestone and ink, hairline rules, guttae under the architrave, no radii, no shadows. Structure does the decorating.