:root{--green: #1f7a5c;--green-dark: #17604a;--green-pale: #e7f3ee;--bg: #f4f6f5;--panel: #ffffff;--ink: #1c2b26;--muted: #6b7c75;--line: #e1e8e5;--red: #c25549;--amber: #b7852c;--amber-bg: #fdf4e3;--blue: #3a6ea5;--radius: 10px;--shadow: 0 1px 3px rgba(28, 43, 38, .08), 0 4px 14px rgba(28, 43, 38, .05)}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{font-family:Hiragino Sans,Noto Sans JP,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6}.app{display:flex;flex-direction:column;height:100%}.center-screen{height:100%;display:flex;align-items:center;justify-content:center}.muted{color:var(--muted)}.small{font-size:12px}.pad{padding:32px}.header{display:flex;align-items:center;gap:24px;padding:10px 20px;background:var(--panel);border-bottom:1px solid 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