Tufte 1.15.7
Community-directory review round: :has() usage reduced from 41 lines to 3 selectors (the code-block language label mechanism now lives on the code element, needing no parent selection; the three survivors are each commented with why no alternative exists). All mjx-container type selectors rewritten to the .MathJax class MathJax stamps on every container. No visual changes — verified with pseudo-element-level computed-style sweeps including the horizontal-scroll case, light and dark. Plugin zips unchanged.