<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 32 32">
  <rect width="32" height="32" rx="4" fill="#0a0e1a"/>
  <text x="16" y="22" font-family="monospace" font-size="18" fill="#4ade80" text-anchor="middle">Z</text>
</svg>
