-- Per-product custom CSS for that one product's claim page, editable from
-- the product editor -- independent of the site-wide theme (admin/design.php)
-- and applied on top of it regardless of which theme is active, since it's
-- a per-product tweak rather than part of the theme system. NULL/empty for
-- every existing product; nothing changes until an admin sets one.

ALTER TABLE products ADD COLUMN custom_css MEDIUMTEXT NULL AFTER default_max_claims;
