*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8fafc;--bg-card:#fff;--bg-sidebar:#fff;--ink:#0f172a;--ink-2:#334155;--muted:#64748b;--border:#e2e8f0;--border-light:#f1f5f9;--accent:#0ea5e9;--accent-hover:#0284c7;--q1:#dc2626;--q1-bg:#fef2f2;--q2:#059669;--q2-bg:#ecfdf5;--q3:#d97706;--q3-bg:#fffbeb;--q4:#64748b;--q4-bg:#f8fafc;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #00000014;--shadow-lg:0 10px 25px -5px #0000001a;--radius-sm:6px;--radius-md:10px;--radius-lg:14px}html,body{height:100%;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px}#app{height:100%}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,select{font-family:inherit;font-size:inherit}.app-shell{height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-sidebar);border-right:1px solid 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