Balance Ball

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="256"
        x2="256"
        y1="336"
        y2="101"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#c3ffe8" />
        <stop offset=".997" stop-color="#f0fff4" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="256"
        x2="256"
        y1="411"
        y2="146.178"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#00b59c" />
        <stop offset="1" stop-color="#9cffac" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M491 336H21c0-62.771 24.444-121.784 68.83-166.17S193.229 101 256 101s121.784 24.444 166.17 68.83S491 273.229 491 336z"
    />
    <path
        fill="url(#b)"
        d="M15 336h482c8.284 0 15 6.716 15 15v45c0 8.284-6.716 15-15 15H15c-8.284 0-15-6.716-15-15v-45c0-8.284 6.716-15 15-15zm406.739-166.59a237.998 237.998 0 0 0-27.104-23.207c-90.414 26.083-186.826 26.075-277.236-.025a238.086 238.086 0 0 0-27.108 23.203C143.658 187.052 199.266 196 256.06 196c56.762 0 112.34-8.938 165.679-26.59zm-366.92 44.979a232.408 232.408 0 0 0-14.009 26.874c68.595 27.469 140.998 41.403 215.25 41.403 74.215 0 146.583-13.921 215.147-41.363a232.31 232.31 0 0 0-14.003-26.876c-128.978 50.649-273.414 50.635-402.385-.038z"
    />
</svg>