a.svg

<svg width="1080" height="1790" viewBox="0 0 1080 1790" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <pattern id="satori_pattern_id_0" x="0" y="0" width="1" height="1" patternUnits="objectBoundingBox">
      <radialGradient id="satori_radial_id_0">
        <stop offset="0" stop-color="rgb(0,0,0)" />
        <stop offset="0" stop-color="rgb(0,0,0)" />
        <stop offset="1" stop-color="rgb(21,24,43)" />
      </radialGradient>
      <mask id="satori_mask_id_0">
        <rect x="0" y="0" width="1080" height="1790" fill="#fff" />
      </mask>
      <rect x="0" y="0" width="1080" height="1790" fill="rgb(21,24,43)" />
      <circle cx="1080" cy="1790" width="1080" height="1790" r="2090.5740838343904" fill="url(#satori_radial_id_0)" mask="url(#satori_mask_id_0)" />
    </pattern>
  </defs>
  <mask id="satori_om-id">
    <rect x="0" y="0" width="1080" height="1790" fill="#fff" />
  </mask>
  <rect x="0" y="0" width="1080" height="1790" fill="#fff" />
  <rect x="0" y="0" width="1080" height="1790" fill="url(#satori_pattern_id_0)" />
  <mask id="satori_om-id-0">
    <rect x="0" y="0" width="1080" height="1790" fill="#fff" />
  </mask>
  <mask id="satori_om-id-0-0">
    <rect x="152" y="1373" width="757" height="8" fill="#fff" />
  </mask>
  <rect x="152" y="1373" width="757" height="8" fill="#d8ac61" transform="matrix(1.00,0.00,0.00,1.00,0.00,0.00)" />
</svg>

b.svg