Top Gradient Banner

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 lucide-react
- Keep the layout responsive on mobile and desktop
- Replace placeholder copy with content that fits the project

The UI code:

import { X } from "lucide-react";

export function TopGradientBanner() {
  return (
    <div className="relative flex items-center justify-center gap-4 bg-gradient-to-r from-emerald-600 via-emerald-500 to-zinc-600 px-4 py-2.5 text-sm text-white shadow-[0_4px_20px_rgba(16,185,129,0.35),0_1px_0_rgba(255,255,255,0.2)_inset]">
      <p className="font-medium">Upgrade to Pro for 2× more CPUs and faster builds</p>
      <button type="button" className="absolute right-3 rounded-md p-1 hover:bg-white/15" aria-label="Dismiss">
        <X className="h-4 w-4" />
      </button>
    </div>
  );
}