SAKE HUNDRED Style Design System (DESIGN.md, Japanese UI)

Design policy: A dual-axis structure of Mincho (serif) and Gothic (sans-serif) typefaces, expressing luxury together with Japanese dignity. Refined contrast of dark text on an off-white background. Optima is used for Latin-script headings, creating a formal presence that fuses Japanese and Western elements - Density: Generous, large whitespace. A luxurious layout that makes the product the star - Keywords: Luxury, Japanese dignity, Mincho typeface, premium, stillness - Characteristics: A Shopify theme that manages all design tokens with CSS Custom Properties. A dual-axis font structure using Y