:root{--bg:#f6f7f9;--surface:#fff;--border:#e4e7ec;--text:#1a1d24;--muted:#667085;--primary:#4338ca;--primary-hover:#3730a3;--primary-soft:#eef2ff;--danger:#dc2626;--danger-soft:#fef2f2;--success:#059669;--radius:10px;--shadow:0 1px 2px #1018280f, 0 1px 3px #1018281a;--shadow-lg:0 12px 32px #1018282e}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}.app-shell{grid-template-columns:240px 1fr;min-height:100vh;display:grid}.sidebar{color:#cdd2de;background:#0f1117;flex-direction:column;gap:4px;height:100vh;padding:20px 14px;display:flex;position:sticky;top:0}.sidebar .brand{color:#fff;letter-spacing:-.02em;padding:6px 12px 18px;font-size:16px;font-weight:700}.sidebar .brand 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