Nezu Museum Style Design System (DESIGN.md, Japanese UI)

Design policy: Mincho type, white ground, a single golden brown. Not a single shadow is used. The first view is entirely filled by a photograph of Kengo Kuma's bamboo-fence approach, with the UI simply placing white text over the photo. Lower-level pages are a single Mincho column on white. Add no decoration; achieve dignity through typeface and whitespace alone - About the Nezu Museum: As a private museum, exhibition periods and opening status take top priority. At the bottom edge of the first view, a three-part row is fixed: the "date panel (black ground) + today's opening status + ticket pu