Tours

A released consumer product, built on a design system rigorous enough to behave like engineering.

Design System Architecture

UI/UX Design

Service

Digital & Systems

Role

Design-system architecture · product UI/UX · responsive & multi-theme system

Year

2024-2026

Location

Tokyo

A screen is the last thing a system produces, not the first. TOURS is a released consumer product whose polished surfaces sit on a design system built to behave like engineering — responsive and theming logic encoded at the component level, not applied by hand screen by screen. It's the digital half of how I work: the same single-idea discipline the physical projects show, expressed as an interface people actually use.

Context

Most product UI drifts as it grows: themes multiply, breakpoints get patched per screen, and a "system" becomes a loose kit that no longer guarantees consistency. TOURS needed the opposite — a component language rigorous enough that consistency across themes and screen sizes is structural, not something a designer re-checks by hand every release. And it had to stay human: a recruiting product whose profiles feel warm, not like a database.

Approach

I decided consistency shouldn't depend on discipline at build time — it should be designed into the components, so good screens become the default output rather than a thing you police. So I encoded responsiveness and theming at the component level: the system decides how a profile reflows and re-themes, and the screens simply inherit it. Architecting the system that makes good screens inevitable is the work; the screens are its evidence.

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Outcome

The system carries four coordinated theme modes — glass, light, dark, and custom colour — a real glassmorphism signature, not a default kit. Responsiveness is documented like engineering: a breakpoint grid (width 400 / 688 / 872 / ∞, height 240 / 400 / 700 / ∞) across which the profile card reflows its content rather than merely resizing. On top of that sit the applied screens — the People Profile modal with skill/condition tag chips, a daily-schedule timeline, interview Q&A, and a "話してみたい" CTA — production-ready and human because the system underneath them is coherent.