:root{--op-canvas:#f3f6f8;--op-panel:#fff;--op-panel-muted:#f7f9fb;--op-ink:#132033;--op-muted:#65758b;--op-line:#dce3ea;--op-line-strong:#c7d1dc;--op-rail:#12344a;--op-rail-soft:#1d4c63;--op-accent:#0f8297;--op-accent-strong:#0b6a7c;--op-success:#0f8a62;--op-warning:#b86a08;--op-danger:#c43d4b;--op-info:#3f6fd8;--op-focus:#0f829738;--radius:.875rem}*{box-sizing:border-box}html{background:var(--op-canvas)}body{background:linear-gradient(180deg,#12344a06,transparent 14rem),var(--op-canvas);color:var(--op-ink);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--op-focus);outline-offset:2px}.shell{grid-template-columns:260px 1fr;min-height:100vh;display:grid}.sidebar{color:#e1ecf0;background:linear-gradient(#102f43 0%,#12344a 56%,#102b3c 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