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

Design policy: A brand site with the presence of a Japanese craft object, composed of "Mincho typeface + warm tones + ultralight weight." A dual-typeface system that uses Morisawa A1 Mincho (MFW-A1MinchoStd-Bold) for Japanese headings, Crimson Pro serif for Latin text, and Yu Gothic Medium for body text. The entire design is unified at weight 300 (ultralight), with a warm off-white #faf7f5 background that expresses the rustic texture of cast-iron cookware - Density: Relaxed, editorial style. Large product photography and generous whitespace are used lavishly, with text kept to a minimum. Cooki