IPSA Style Design System (DESIGN.md, Japanese UI)

Design approach: Warm minimal. Expresses warm-toned refinement through surfaces of cream #fffef8 and warm yellow #fffae7, while maintaining serenity with the restrained near-black text color #181818. A beauty brand that conveys a scientific approach while retaining warmth - Density: Relaxed. Large hero images, with text at modest sizes, making the most of whitespace - Keywords: Warm minimal, personalized, scientific beauty, serene, cream tones - Characteristics: - Uses MFW-HiraKakuProN (the web font version of Hiragino Kaku Gothic ProN) for Japanese text. Four weights are used selectively: W3