.layout-bc .nav-floating-btn,
.header-bc .center-bottom-btn > .nav-floating-btn,
body > .center-bottom-btn > .nav-floating-btn,
html.is-web body > .center-bottom-btn > .nav-floating-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.32);
  box-shadow:
    0 8px 28px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(16px) saturate(1.35);
  -webkit-backdrop-filter: blur(16px) saturate(1.35);
  color: #fff;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55);
}

.layout-bc .nav-floating-btn::before,
.header-bc .center-bottom-btn > .nav-floating-btn::before,
body > .center-bottom-btn > .nav-floating-btn::before,
html.is-web body > .center-bottom-btn > .nav-floating-btn::before {
  color: #fff;
  opacity: 1;
  text-shadow:
    0 0 1px rgba(0, 0, 0, 0.85),
    0 1px 3px rgba(0, 0, 0, 0.55);
}

.header-bc .center-bottom-btn:not(.nav-floating-btn-hide) > .nav-floating-btn,
body > .center-bottom-btn:not(.nav-floating-btn-hide) > .nav-floating-btn {
  pointer-events: auto;
}