IPPODO Tea Style Design System (DESIGN.md, Japanese UI)

Design policy: Express the dignity and stillness of a long-established Kyoto shop through Mincho headings, Light-weight body text, and generous whitespace. Though it is a commerce site, the design evokes the "ma" (interval) of a tea room - Density: Extremely low. With body line-height 2.0 and letter-spacing 0.1em, it achieves "air-filled" typesetting that stands out even among Japanese websites for its wide line and letter spacing. It gives no impression whatsoever of rushing to sell products - Keywords: Kyoto dignity, ma (interval), tea room stillness, Mincho × Gothic two-layer structure, Bro