<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
  <defs>
    <linearGradient id="shieldGrad" x1="0%" y1="0%" x2="100%" y2="100%">
      <stop offset="0%" style="stop-color:#1e3a5f;stop-opacity:1" />
      <stop offset="100%" style="stop-color:#0d9488;stop-opacity:1" />
    </linearGradient>
  </defs>
  <path d="M128 20 L40 60 L40 120 Q40 180 128 236 Q216 180 216 120 L216 60 Z" fill="url(#shieldGrad)"/>
  <text x="128" y="160" font-family="Arial, sans-serif" font-size="100" font-weight="bold" fill="#ffffff" text-anchor="middle">AI</text>
</svg>