.watermark {
            position: relative;
            min-height: 100vh;
        }
        .watermark::after {
            content: "版权所有 © 2025 - 麋鹿科技云";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
    bottom: 0;
            pointer-events: none;
            opacity: 0.15;
            font-size: 28px;
            color: #000;
            transform: rotate(-30deg);
            z-index: 9999;
            background-repeat: repeat;
            text-align: center;
            line-height: 150px;
            font-weight: bold;
        }
        body {
            user-select: none;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
        }