/* 优化后的水印样式 */
.watermark-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 99999;
}

.watermark-text {
    position: absolute;
    white-space: pre;
    font-size: 14px;
    font-weight: 500;
    font-family: "Microsoft YaHei", "SimHei", "PingFang SC", "WenQuanYi Micro Hei", monospace;
    color: rgba(0, 0, 0, 0.15);
    transform: rotate(-22deg);
    text-align: center;
    letter-spacing: 1px;
    line-height: 1.8;
    text-shadow: 1px 1px 1px rgba(255, 255, 255, 0.3);
}

/* 增加水印密度 - 5x5 网格共25个 */
.watermark-text:nth-child(1) { top: 2%; left: 2%; }
.watermark-text:nth-child(2) { top: 2%; left: 25%; }
.watermark-text:nth-child(3) { top: 2%; left: 48%; }
.watermark-text:nth-child(4) { top: 2%; left: 71%; }
.watermark-text:nth-child(5) { top: 2%; left: 94%; }

.watermark-text:nth-child(6) { top: 20%; left: 2%; }
.watermark-text:nth-child(7) { top: 20%; left: 25%; }
.watermark-text:nth-child(8) { top: 20%; left: 48%; }
.watermark-text:nth-child(9) { top: 20%; left: 71%; }
.watermark-text:nth-child(10) { top: 20%; left: 94%; }

.watermark-text:nth-child(11) { top: 38%; left: 2%; }
.watermark-text:nth-child(12) { top: 38%; left: 25%; }
.watermark-text:nth-child(13) { top: 38%; left: 48%; }
.watermark-text:nth-child(14) { top: 38%; left: 71%; }
.watermark-text:nth-child(15) { top: 38%; left: 94%; }

.watermark-text:nth-child(16) { top: 56%; left: 2%; }
.watermark-text:nth-child(17) { top: 56%; left: 25%; }
.watermark-text:nth-child(18) { top: 56%; left: 48%; }
.watermark-text:nth-child(19) { top: 56%; left: 71%; }
.watermark-text:nth-child(20) { top: 56%; left: 94%; }

.watermark-text:nth-child(21) { top: 74%; left: 2%; }
.watermark-text:nth-child(22) { top: 74%; left: 25%; }
.watermark-text:nth-child(23) { top: 74%; left: 48%; }
.watermark-text:nth-child(24) { top: 74%; left: 71%; }
.watermark-text:nth-child(25) { top: 74%; left: 94%; }

.watermark-text:nth-child(26) { top: 92%; left: 2%; }
.watermark-text:nth-child(27) { top: 92%; left: 25%; }
.watermark-text:nth-child(28) { top: 92%; left: 48%; }
.watermark-text:nth-child(29) { top: 92%; left: 71%; }
.watermark-text:nth-child(30) { top: 92%; left: 94%; }