.murmur-subtitle{position:fixed;bottom:200px;left:50%;transform:translate(-50%);z-index:30;max-width:min(90vw,400px);padding:12px 18px 12px 40px;background:#000000a6;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-radius:16px;border:1px solid rgba(255,255,255,.1);color:#fff;font-size:14px;line-height:1.6;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,system-ui,sans-serif;opacity:0;pointer-events:none;transition:opacity .3s ease,transform .3s ease;transform:translate(-50%) translateY(8px)}.murmur-subtitle:before{content:"AI";position:absolute;left:12px;top:12px;font-size:10px;font-weight:700;letter-spacing:.5px;color:#ffffff80;background:#ffffff1f;padding:2px 5px;border-radius:4px;line-height:1}.murmur-subtitle.visible{opacity:1;pointer-events:auto;transform:translate(-50%) translateY(0)}.murmur-subtitle.fade-out{opacity:0;transform:translate(-50%) translateY(-4px);transition:opacity .6s ease,transform .6s ease}.murmur-subtitle.loading .murmur-text:after{content:"...";animation:murmur-pulse 1.2s ease-in-out infinite}@keyframes murmur-pulse{0%,to{opacity:.3}50%{opacity:1}}