.background-audio-toggle {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 10px 15px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 999px;
  background: rgba(10,10,10,.9);
  color: #fff;
  font: 600 11px/1.2 Arial, sans-serif;
  letter-spacing: .08em;
  cursor: pointer;
  box-shadow: 0 3px 20px rgba(0,0,0,.3);
}
.background-audio-toggle:hover { border-color: #fff; }
.background-audio-toggle:focus-visible { outline: 2px solid #fff; outline-offset: 4px; }
.background-audio-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.background-audio-toggle[aria-pressed="false"] .audio-waves { opacity: .25; }
.teaser-bottom { bottom: 82px; }
@media (max-width: 600px) {
  .background-audio-toggle { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); padding: 10px 12px; }
}