/* === 图片防盗下载：禁拖拽 + 水印层 === */
img{
  -webkit-user-drag:none;
  -khtml-user-drag:none;
  -moz-user-drag:none;
  -o-user-drag:none;
  user-drag:none;
}
/* JS 包裹内容图后形成的水印层 */
.img-protect{
  position:relative;
  display:block;
  width:100%;
  height:100%;
  max-width:100%;
  line-height:0;
  overflow:hidden;
}
.img-protect img{
  width:100% !important;
  height:100% !important;
  object-fit:cover !important;
  object-position:center !important;
  display:block;
}
.img-protect .img-wm{
  position:absolute;
  inset:0;
  pointer-events:none;
  z-index:3;
  background-repeat:repeat;
  background-size:200px 200px;
  opacity:.55;
}