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

Design policy: A craft e-commerce site that conveys the handmade feel of paper and ink, befitting a semi-custom stationery shop in Kuramae. Product photography textures and whitespace take center stage, while the UI quietly supports them in a monochrome palette of black, gray, and white. - Density: Japanese body text set loosely at 1.8 line-height, paired with large-format photography in the product grid. Information density is intentionally low, reproducing the quietness of choosing a writing instrument. - Keywords: stationery, paper, ink, writing, Kuramae, semi-custom, artisan, serenity, dig