.page-ad {
  box-sizing: border-box;
  width: min(970px, calc(100% - 48px));
  margin: 40px auto 32px;
  padding-top: 16px;
  border-top: 1px solid #ffffff18;
  color: #a6b5c0;
}
.page-ad-label {
  display: block;
  margin-bottom: 12px;
  font:
    10px/1.4 system-ui,
    sans-serif;
}
.page-ad .page-ad-unit {
  display: block;
  width: 100%;
  height: 90px;
}
.page-ad[hidden],
.page-side-ad[hidden] {
  display: none;
}
@media (max-width: 600px) {
  .page-ad .page-ad-unit {
    height: 100px;
  }
}
.page-side-ad {
  display: none;
  box-sizing: border-box;
  width: 160px;
  color: #a6b5c0;
}
.page-side-ad .page-ad-unit {
  width: 160px;
  height: 600px;
}
/* A separate document column, never a floating overlay over text or controls. */
@media (min-width: 1440px) {
  body:has([data-page-side-ad]:not([hidden])) {
    padding-right: 220px;
  }
  .page-side-ad:not([hidden]) {
    display: block;
    position: absolute;
    top: 160px;
    right: max(24px, calc((100vw - 1560px) / 2));
  }
}