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    <linearGradient id="bgGradient" x1="0%" y1="0%" x2="100%" y2="100%">
      <stop offset="0%" style="stop-color:#1e3c72;stop-opacity:1" />
      <stop offset="100%" style="stop-color:#4a90e2;stop-opacity:1" />
    </linearGradient>
    <linearGradient id="textGradient" x1="0%" y1="0%" x2="100%" y2="0%">
      <stop offset="0%" style="stop-color:#ffffff;stop-opacity:1" />
      <stop offset="100%" style="stop-color:#f0f8ff;stop-opacity:1" />
    </linearGradient>
  </defs>
  
  <!-- Background Circle -->
  <circle cx="256" cy="256" r="240" fill="url(#bgGradient)" stroke="#ffffff" stroke-width="8"/>
  
  <!-- H2 Text -->
  <text x="256" y="320" font-family="Arial, sans-serif" font-size="180" font-weight="bold" 
        text-anchor="middle" fill="url(#textGradient)" stroke="#1e3c72" stroke-width="2">H2</text>
  
  <!-- Small accent dot for software/tech feeling -->
  <circle cx="420" cy="180" r="20" fill="#ff6b35" opacity="0.8"/>
  
  <!-- Subtle circuit pattern -->
  <g stroke="#ffffff" stroke-width="2" opacity="0.3" fill="none">
    <path d="M100 150 L150 150 L150 200 L200 200"/>
    <path d="M312 100 L362 100 L362 150 L412 150"/>
    <circle cx="150" cy="150" r="8" fill="#ffffff"/>
    <circle cx="362" cy="150" r="8" fill="#ffffff"/>
  </g>
</svg>
