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GRID LIGHT EFFECT (experimental)
A soft blue light drifts across a faint sitewide grid, brightening
the grid lines it passes near. Idle: wanders on its own. Active:
follows the mouse or a touch.
TO REMOVE ENTIRELY:
1. Delete this file (css/grid-light.css)
2. Delete js/grid-light.js
3. In each page's , remove the to this file
4. In each page's , remove the