如何更改 iOS 和安卓浏览器上的 input[type="radio"] 元素的默认样式？

<h3>CSS3 Custom radio</h3>
<div class="radio"> 
    <input type="radio" value="1" name="sex" id="radio1" checked>
    <label for="radio1">男</label>
    <br>
    <input type="radio" value="0" name="sex" id="radio2">
    <label for="radio2">女</label>
</div>

label {
    cursor: pointer;
    display: inline-block;
    font-size: 13px;
    margin-right: 15px;
    padding-left: 25px;
    position: relative;
}
input[type="radio"] {
    display: none;
}
label:before {
    background-color: #a06b63;
    bottom: 1px;
    box-shadow: 0 2px 3px 0 rgba(0, 0, 0, 0.3) inset, 0 1px 0 0 rgba(255, 255, 255, 0.8);
    content: "";
    display: inline-block;
    height: 16px;
    left: 0;
    margin-right: 10px;
    position: absolute;
    width: 16px;
}
.radio label:before {
    border-radius: 8px;
}
input[type="radio"]:checked + label:before {
    color: #f3f3f3;
    content: "•";
    font-size: 30px;
    line-height: 18px;
    text-align: center;
}