:root{--bg: #f7f4ee;--surface: #fffdf8;--ink: #1c1917;--ink-soft: #57534e;--ink-muted: #a8a29e;--accent: #b04a2f;--accent-soft: #f5e7e0;--line: #e7e5e4;--shadow-sm: 0 1px 2px rgba(28, 25, 23, .04), 0 1px 3px rgba(28, 25, 23, .06);--shadow-md: 0 4px 12px rgba(28, 25, 23, .08), 0 2px 4px rgba(28, 25, 23, .04);--r: 12px;--r-sm: 8px;--r-pill: 999px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink);font-family:Noto Sans JP,ui-sans-serif,system-ui,-apple-system,Hiragino Sans,Yu Gothic,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer}input,textarea{font:inherit}.shell{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--surface);border-bottom:1px solid 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