/* Mobile-only rework of the tree/card layout (index.php's #F1/#F2/#F5). Everything here is gated behind the same max-width breakpoint, so none of it touches desktop rendering - the tree and card content already coexist side by side in the DOM on every page load (see index.php), this just toggles which one is visible and rescales what's shown. js/mobile.js handles the two things CSS alone can't: computing a real scale factor for the tree/card graphics (they're fixed-px-sized), and the "<<" button's click handler. */ /* Hidden by default (desktop included) - a bare