:root{--bg:#f5f7fb;--paper:#fff;--ink:#18263b;--sub:#6e7b8f;--border:#e5eaf2;--brand:#2469db;--brand-dark:#1554b6;--sidebar:#111e33;--light-blue:#e9f2ff}*{box-sizing:border-box}html,body{min-height:100%;color:var(--ink);background:var(--bg);margin:0;font-family:Arial,Helvetica Neue,sans-serif}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.app-shell{min-height:100vh;display:flex}.sidebar{background:var(--sidebar);color:#e6edf7;flex-direction:column;flex-shrink:0;width:250px;height:100vh;display:flex;position:sticky;top:0}.sidebar-brand,.identity{align-items:center;gap:12px;display:flex}.sidebar-brand{padding:26px 20px 29px}.sidebar-brand strong,.identity strong{letter-spacing:-.3px;font-size:16px;display:block}.sidebar-brand small,.identity 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