/* Cloudflare 客户展示版水印：固定覆盖，斜向平铺，不影响点击操作。 */
body::before {
    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='260' height='180' viewBox='0 0 260 180'%3E%3Cg transform='rotate(-24 130 90)'%3E%3Ctext x='130' y='94' text-anchor='middle' font-size='24' font-family='Microsoft YaHei, Arial, sans-serif' font-weight='700' fill='%23e60012' fill-opacity='0.13'%3E%E4%BB%85%E4%BE%9B%E6%95%88%E6%9E%9C%E5%B1%95%E7%A4%BA%3C/text%3E%3C/g%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 26rem 18rem;
}