/* 两侧空白区域的低透明度物流场景背景，不覆盖数据内容。 */
body:after{
  content:"";
  position:fixed;
  inset:90px 0 0;
  z-index:-2;
  pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(243,246,250,.78) 0%,rgba(243,246,250,.52) 18%,rgba(243,246,250,.86) 42%,rgba(243,246,250,.86) 58%,rgba(243,246,250,.52) 82%,rgba(243,246,250,.78) 100%),
    url('/warehouse-ghost.jpg');
  background-position:center, center bottom;
  background-size:cover, cover;
  opacity:.40;
  filter:saturate(.78) contrast(.9);
}
main{position:relative;z-index:1}
@media(max-width:800px){body:after{opacity:.18;background-position:center, 68% bottom}}