Put the NGU dove at the centre of the brand hero's rings

DoveMark carries the dove path from the original home page as its
own component. The hero draws it at the rings' centre, upright while
they turn, with a soft glow and a gentle bob that stops under reduced
motion. The rings' opacity moves from the SVG to their own group so
the dove isn't dimmed with them.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/DoveMark.tsx

@@ -0,0 +1,30 @@
+/* ═══════════════════════════════════════════════════════════════
+   DOVE MARK
+
+   NGU's dove, lifted from the original home page. The path and its
+   two transforms are the drawing as exported, untouched; only the
+   wrapper changed — sized by the caller, coloured by currentColor,
+   and hidden from screen readers since it's decoration wherever
+   it appears.
+
+   Renders as an <svg> element, so it nests inside another SVG as
+   well as in HTML: pass x, y, width and height to place it in a
+   parent viewBox.
+   ═══════════════════════════════════════════════════════════════ */
+
+import type { SVGProps } from 'react'
+
+const PATH =
+  'm 355.91146,-123.11955 c 3.13369,-1.59928 7.04147,-4.49077 10.29591,-6.33595 3.25443,-1.84519 6.30899,-3.58417 9.61426,-4.20523 2.65302,-0.4889 6.37319,-0.18817 9.07211,0.58357 2.69896,0.77175 5.57299,2.70484 7.16593,3.40762 1.59295,0.70275 2.24655,0.19006 2.82855,-0.77494 0.582,-0.96504 2.81839,-6.05064 3.84362,-8.9293 1.02519,-2.87864 2.26409,-5.72337 4.14553,-7.76121 1.88144,-2.03782 2.31893,-2.07776 4.06202,-3.15865 1.74307,-1.08086 10.24244,-3.71628 14.53403,-5.61581 4.29158,-1.89953 8.11957,-3.58996 12.24067,-5.48028 4.12109,-1.89033 6.08861,-2.79441 7.30709,-3.29554 0.273,0.73801 -0.2034,3.06663 -1.16031,5.22317 -0.95691,2.15654 -2.9569,5.04357 -4.86279,7.26365 -1.90589,2.22009 -4.28775,4.10342 -6.82223,5.66812 -2.53448,1.56467 -4.53981,2.45823 -7.60439,3.71266 -3.06457,1.25446 -11.88915,4.7102 -14.64698,7.12005 -2.75786,2.40984 -4.18313,6.63212 -3.64772,7.60115 0.5354,0.96902 2.51391,-1.48598 3.81084,-2.34867 1.29694,-0.8627 1.95172,-1.05814 3.14897,-1.09198 1.17765,-0.0172 2.77532,0.40067 3.29849,0.63293 1.48441,0.659 3.97438,2.00122 3.54176,3.36038 -0.16368,0.51434 -0.19462,0.56904 -3.05611,1.25841 -2.86151,0.68935 -3.48508,1.29579 -3.81533,3.74861 -0.22097,1.47094 -1.44719,3.88743 -3.13317,5.28015 -1.68596,1.39274 -4.55099,2.93627 -8.41717,3.35482 -3.86617,0.41855 -6.17544,3.97192 -6.93256,5.37259 -0.75713,1.40064 -2.66104,5.90506 -2.99685,6.15238 -0.3358,0.24732 -2.76998,-0.36582 -3.79458,-0.82517 -1.02463,-0.45935 -2.612,-1.39111 -3.63624,-2.16132 -1.02425,-0.7702 -3.457,-2.975 -3.0018,-3.64018 0.45519,-0.66516 1.56543,-1.35445 2.73515,-2.12254 1.16972,-0.76811 3.86984,-2.33631 5.3456,-3.59002 1.47576,-1.25372 2.7334,-2.47754 3.4042,-3.48323 0.67079,-1.00567 0.9358,-2.14286 -0.28206,-2.7388 -1.21786,-0.59597 -1.84092,-0.39835 -4.4486,0.0225 -2.60769,0.42097 -4.8218,1.10142 -8.46858,1.9005 -3.64678,0.79905 -7.82786,2.49393 -10.97221,3.07304 -3.14439,0.5791 -4.3363,0.83756 -8.5197,0.95691 -4.1834,0.11935 -7.15938,-0.35864 -8.95468,-0.91763 -1.7953,-0.55899 -2.64147,-1.55556 -2.60415,-2.17667 3.90737,-1.58574 7.9469,-3.2841 11.38348,-5.04009 z'
+
+export default function DoveMark(props: SVGProps<SVGSVGElement>) {
+  return (
+    <svg viewBox="0 0 72.867699 48.568241" aria-hidden="true" focusable="false" {...props}>
+      <g transform="translate(-70.490069,-117.83965)">
+        <g transform="matrix(0.71532587,0,0,0.71532587,-173.91758,237.73112)">
+          <path d={PATH} fill="currentColor" />
+        </g>
+      </g>
+    </svg>
+  )
+}