<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
  <rect width="64" height="64" rx="18" fill="#171813"/>
  <circle cx="57" cy="7" r="18" fill="#f4d51f"/>
  <text x="32" y="40" fill="#fffef9" font-family="Arial, sans-serif" font-size="22" font-weight="700" text-anchor="middle">NB</text>
</svg>
