Slightly widen main content while keeping sidebar proportion

components/layout-shell.tsx

@@ -8,7 +8,7 @@ export function LayoutShell({ children }: { children: React.ReactNode }) {
     <div className="flex min-h-screen flex-col">
       <SiteHeader />
       <main className="flex-1 px-4 py-6">
-        <div className="mx-auto grid max-w-5xl gap-6 lg:grid-cols-[minmax(0,2.6fr)_minmax(0,1.4fr)]">
+        <div className="mx-auto grid max-w-6xl gap-6 lg:grid-cols-[minmax(0,2.6fr)_minmax(0,1.4fr)]">
           <div>{children}</div>
           <RightSidebar />
         </div>