:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1a202c;--color-text-muted: #64748b;--color-primary: #2f855a;--color-primary-strong: #276749;--color-green: #38a169;--color-yellow: #d69e2e;--color-red: #e53e3e;--color-gray: #94a3b8;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow-md: 0 4px 12px rgba(15, 23, 42, .08);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer}.app{min-height:100%;display:flex;flex-direction:column;max-width:720px;margin:0 auto;padding-bottom:80px}.header{padding:16px 20px 8px;display:flex;align-items:baseline;justify-content:space-between}.header 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