:root{--bg:#f4f7fa;--surface:#fff;--surface-2:#eef5f6;--text:#162026;--muted:#65717a;--subtle:#8a969f;--line:#dce4e9;--line-strong:#c9d5dc;--accent:#0f8b8d;--accent-strong:#086b70;--accent-soft:#e1f3f2;--blue:#315f8f;--warning:#a45b16;--warning-soft:#fff1db;--danger:#b34242;--success:#28784d;--shadow:0 12px 26px #1e364b12;--radius:8px;--sidebar:244px;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.45}*{box-sizing:border-box}body{min-width:360px;margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.7}#root{min-height:100vh}.app-shell{grid-template-columns:var(--sidebar) minmax(0, 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