Promotion and sale-event architecture — banner hierarchy vs. the one-primary-CTA law, discount-code entry UX, bundle and gift-with-purchase merchandising, truthful urgency (countdowns, scarcity, EU Omnibus/FTC price-history rules), sale-event landing-page anatomy, and restoring the page after the ev
Promotion and sale-event architecture — banner hierarchy vs. the one-primary-CTA law, discount-code entry UX, bundle and gift-with-purchase merchandising, truthful urgency (countdowns, scarcity, EU Omnibus/FTC price-history rules), sale-event landing-page anatomy, and restoring the page after the event ends. Use when adding a sitewide promo banner or homepage takeover, building a discount-code or