eader__button md-icon" for="__palette_1" hidden="" title="切换浅色模式">
<svg viewbox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path d="M12 18c-.89 0-1.74-.2-2.5-.55C11.56 16.5 13 14.42 13 12c0-2.42-1.44-4.5-3.5-5.45C10.26 6.2 11.11 6 12 6a6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69Z"></path></svg>
</label>
</form>
<label class="md-header__button md-icon" for="__search">
<svg viewbox="0 0 24 24" xmlns="http://