1  <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
2    <rect width="32" height="32" rx="8" fill="#1a1a1a"/>
3    <text x="16" y="23" font-family="system-ui, -apple-system, sans-serif" font-size="22" font-weight="700" fill="white" text-anchor="middle">C</text>
4  </svg>