Ref's `.bg0/.bg1/.bg2` set only a background image and `html, body` centre the
texture with vertical tiling, so the extra background colours and the default
tiling are removed. Two ranking views declared unscoped `body` rules that leaked
a 500px min-width and a 21px line-height onto every screen; each page now owns
its own contract. Controls that Ref renders with the Bootstrap/Lumen family get
the shared modifier so the bottom edge moves on hover and while pressed.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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