Japan's 31Club is calm, points-first, minimal white/pink — built for a market that knows the app. Taiwan needed in-store urgency: barcode ready at the counter, faster scan paths, promo surfaces local QSR users expect. I kept parent-brand primitives (color, illustration tone, component vocabulary) and review gates, but refused a pixel-copy: IA, density, and tier storytelling were tuned for Taiwan, with rationale documented for every divergence ahead of HQ reviews.

The decision that rewired the direction was loyalty mechanics: HQ thinks in points and redemption, but Taiwan's phase-one backend ran on spend-based tiers with no point burn. Once workshops confirmed the gap, we reframed the MVP around spend progress, tier unlocks, and voucher redemption — and picked the sweeter, campaign-forward visual direction, since Japan's quieter shell would have under-communicated value to a market still learning the program.