.road-sound{position:fixed;z-index:65;left:max(20px,env(safe-area-inset-left,0px));bottom:calc(20px + env(safe-area-inset-bottom, 0px));display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px 0 12px;border-radius:999px;border:1px solid rgba(var(--gold-soft-rgb),.28);background:rgba(5,8,15,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:rgba(var(--cream-rgb),.62);font-family:Cinzel,Georgia,serif;font-weight:600;font-size:10px;letter-spacing:.24em;text-transform:uppercase;cursor:pointer;transition:color .3s ease,border-color .3s ease,opacity .4s ease}.road-sound:focus-visible,.road-sound:hover{color:var(--gold-soft);border-color:rgba(var(--gold-soft-rgb),.55)}.road-sound.on{color:var(--gold-soft)}.road-sound.on .road-sound-w1,.road-sound.on .road-sound-w2{animation:road-sound-wave 2.4s ease-in-out infinite}.road-sound.on .road-sound-w2{animation-delay:.3s}@keyframes road-sound-wave{0%,to{opacity:.35}50%{opacity:1}}@media (prefers-reduced-motion:reduce){.road-sound.on .road-sound-w1,.road-sound.on .road-sound-w2{animation:none}}@media (max-width:640px){.road-sound span{display:none}.road-sound{width:44px;height:44px;padding:0;justify-content:center}}@media (max-width:640px){.road-frame:has(.asc-bar,.road-strip) .road-sound{top:calc(var(--nav-h, 84px) + (var(--strip-h, 36px) - 32px) / 2);bottom:auto;left:auto;right:max(8px,env(safe-area-inset-right,0px));width:32px;height:32px;z-index:30;border-color:transparent;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}.road-frame:has(.road-sound) .asc-bar,.road-frame:has(.road-sound) .road-strip{padding-right:46px}.road-frame.at-foot:has(.asc-bar) .road-sound{opacity:0;pointer-events:none}}