Film Grain Gradient

Please implement this code in the current project and add it to (Your Desired Section, e.g. homepage hero, pricing page, dashboard). Change the primary accent color to (YOUR HEX CODE COLOR, e.g. #6366F1).

Requirements:
- Use React + Tailwind CSS (match the project's existing setup)
- Install dependencies if needed: npm install react react-dom
- Keep the layout responsive on mobile and desktop
- Replace placeholder copy with content that fits the project

The UI code:

export function FilmGrainBackground({ children }: { children?: React.ReactNode }) {
  return (
    <div className="relative min-h-screen overflow-hidden bg-gradient-to-br from-zinc-900 via-zinc-950 to-emerald-950">
      <div
        className="pointer-events-none absolute inset-0 opacity-[0.35] mix-blend-overlay"
        style={{
          backgroundImage: `url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")`,
        }}
        aria-hidden
      />
      <div className="pointer-events-none absolute inset-0 bg-[radial-gradient(ellipse_at_30%_20%,rgba(16,185,129,0.15),transparent_50%)]" aria-hidden />
      {children && <div className="relative z-10">{children}</div>}
    </div>
  );
}