/* Phase 3 result: no real Merchant Theme difference exists today.
 *
 * Diffed the full <style> block of 摊位点单 Stall POS.html against FOODGOOD.html:
 * the :root color/typography variables (--tarp, --red, --lamp, --bg, --surface,
 * --hdr, dark-mode overrides, fonts) are byte-identical in both files. The only
 * two CSS differences found are .demo-badge (demo-data-generator module) and
 * .authgate/.authbox (auth module) — those are Module CSS, not brand theme, and
 * stay where they are (see FOODGOOD.html's <style> block) until Phase 6.
 *
 * Left empty on purpose per Phase 3 rules — do not copy identical core CSS
 * here just to make this file "look complete". If demo ever gets a real
 * brand-specific look, its overrides go here as CSS custom properties, e.g.:
 *   :root { --tarp: #...; }
 */