html::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 2147483647;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='160' viewBox='0 0 240 160'%3E%3Ctext x='120' y='82' text-anchor='middle' fill='%23000000' fill-opacity='0.13' font-family='Arial,%20Microsoft%20YaHei,%20sans-serif' font-size='20' font-weight='700' transform='rotate(-24 120 80)'%3E%E4%BB%85%E4%BE%9B%E6%95%88%E6%9E%9C%E5%B1%95%E7%A4%BA%3C/text%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 240px 160px;
}