/* AI NIIGATA 全ページ共通の操作性・ヘッダー補正。 */
.ai-niigata-lp-body .sound-toggle {
  position: fixed;
  top: auto;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  left: auto;
  width: auto;
  min-width: 122px;
  min-height: 44px;
  margin: 0;
  padding: 10px 15px 10px 12px;
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(7, 24, 32, 0.78);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.ai-niigata-lp-body .sound-toggle:focus-visible {
  outline: 3px solid rgba(143, 228, 238, 0.86);
  outline-offset: 3px;
}

.ai-niigata-lp-body .sound-toggle.is-playing {
  border-color: rgba(251, 215, 132, 0.72);
  background: rgba(11, 47, 57, 0.9);
}

.ai-niigata-lp-body .header {
  z-index: 30;
}

.ai-niigata-lp-body .loader.is-hidden {
  pointer-events: none;
}

@media (max-width: 900px) {
  .ai-niigata-lp-body .sound-toggle {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(14px, env(safe-area-inset-bottom));
    min-width: 46px;
    min-height: 46px;
    padding: 11px;
  }

  .ai-niigata-lp-body .sound-toggle .sound-text {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
  }
}