var(--bs-border-color) was nearly invisible against var(--bs-body-bg) in
both light and dark mode. Switched to color-mix(var(--bs-body-color) 20%)
which guarantees visible contrast regardless of theme. Hover darkens to 30%.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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