Sghr (Sugahara / Sugahara Craft Glass) Style Design System (DESIGN.md, Japanese UI)

Design policy: Express "the transparency of glass" through a blue-grey text color and a pure white background. A gallery-style layout that restrains decoration and speaks through product photography and whitespace - Density: Low information density. Large product photography and generous line spacing (line-height 2.0) create a showroom-like atmosphere - Keywords: Transparency, blue-grey, handwork, gallery-style, stillness - Characteristics: A rare configuration that avoids pure black for text color and uses #505f6e (blue-grey) as its base. Uses DNP Shuei Gothic Gin (Adobe Fonts) for Japanese t