Replace filter with gradient in icon

favicon/supercardinality.svg

@@ -6,11 +6,15 @@
       <stop offset="0%" stop-color="#f7e3a1"/>
       <stop offset="100%" stop-color="#dcae44"/>
     </linearGradient>
+    <radialGradient id="gold-glow" cx="50%" cy="50%" r="50%">
+      <stop offset="0%"  stop-color="#dcae44" stop-opacity="0.15"/>
+      <stop offset="60%" stop-color="#dcae44" stop-opacity="0.15"/>
+      <stop offset="100%" stop-color="#dcae44" stop-opacity="0"/>
+    </radialGradient>
     <linearGradient id="gold-dark" x1="0" y1="0" x2="1" y2="1">
       <stop offset="0%" stop-color="#a87c26"/>
       <stop offset="100%" stop-color="#6b4713"/>
     </linearGradient>
-    <filter id="glow-blur"><feGaussianBlur stdDeviation="5"/></filter>
     <mask id="uc-mask">
       <rect width="100" height="100" fill="white"></rect>
     </mask>
@@ -33,7 +37,7 @@
       <use href="#rose-large-arm" transform="rotate(240 50 50)"/>
     </g>
   </defs>
-  <circle cx="50" cy="50" r="40" fill="url(#gold-light)" opacity="0.15" filter="url(#glow-blur)"></circle>
+  <circle cx="50" cy="50" r="50" fill="url(#gold-glow)"></circle>
   <g mask="url(#uc-mask)"><use href="#compass-rose"></use></g>
   <circle cx="50" cy="50" r="10" fill="url(#gold-light)" stroke="black" stroke-width="0.5"></circle>
   <path d="M 55 45 A 5 3.9 0 1 0 50 50 A 5 3.9 0 1 1 45 55" stroke="url(#gold-dark)" fill="none" stroke-width="2" />