:root{--primary:#1f6feb;--primary-dark:#1550b3;--primary-soft:#e8f0fe;--background:#f5f7fb;--surface:#fff;--surface-alt:#fafbfd;--text:#101828;--muted:#667085;--border:#e4e7ec;--success:#12855b;--success-soft:#e3f7ee;--warning:#b25e09;--warning-soft:#fdf2e2;--danger:#c0362c;--danger-soft:#fdecea;--radius:14px;--shadow:0 1px 2px #1018280d, 0 8px 24px #1018280f;--sidebar-w:244px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--background);color:var(--text);-webkit-font-smoothing:antialiased;font-family:Segoe UI,system-ui,-apple-system,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}h1,h2,h3,h4{letter-spacing:-.01em;margin:0;font-weight:650}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);height:100vh;padding:18px 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