<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
  <defs>
    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
      <stop offset="0%" stop-color="#4060b8"/>
      <stop offset="100%" stop-color="#1a2860"/>
    </linearGradient>
    <linearGradient id="nface" x1="0" y1="0" x2="0" y2="1">
      <stop offset="0%" stop-color="#ffffff"/>
      <stop offset="100%" stop-color="#c0d0ff"/>
    </linearGradient>
  </defs>

  <!-- Fundo azul arredondado -->
  <rect width="100" height="100" rx="18" fill="url(#bg)"/>

  <!-- Brilho sutil no topo -->
  <ellipse cx="42" cy="20" rx="28" ry="11" fill="white" fill-opacity="0.07"/>

  <!-- Camadas de extrusão 3D (de trás para frente) -->
  <text x="56" y="80" text-anchor="middle"
        font-family="'Arial Black', Arial, sans-serif"
        font-weight="900" font-size="74"
        fill="#04102e" opacity="0.6">N</text>

  <text x="53" y="77" text-anchor="middle"
        font-family="'Arial Black', Arial, sans-serif"
        font-weight="900" font-size="74"
        fill="#0e2050" opacity="0.7">N</text>

  <!-- Face frontal com gradiente branco -->
  <text x="50" y="74" text-anchor="middle"
        font-family="'Arial Black', Arial, sans-serif"
        font-weight="900" font-size="74"
        fill="url(#nface)">N</text>
</svg>
