.mobile-bar,.mobile-bar__overlay,.mobile-bar__panel{display:none}@media (max-width: 768px){.mobile-bar{display:flex;position:fixed;bottom:0;left:0;right:0;height:48px;background:#27272a;align-items:center;gap:.625rem;padding:0 .75rem;z-index:999;transform:translateY(100%);transition:transform .3s ease}.mobile-bar--visible{transform:translateY(0)}.mobile-bar__play-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;border:none;background:#fff;color:#27272a;cursor:pointer;flex-shrink:0}.mobile-bar__play-icon{width:16px;height:16px}.mobile-bar__progress{flex:1;height:4px;background:#3f3f46;border-radius:2px;cursor:pointer;overflow:hidden}.mobile-bar__progress-fill{height:100%;background:#ff6719;border-radius:2px;transition:width .1s linear}.mobile-bar__time{font-size:.6875rem;color:#a1a1aa;font-variant-numeric:tabular-nums;min-width:2rem;text-align:center;flex-shrink:0}.mobile-bar__section{flex:1;font-size:.8125rem;color:#e4e4e7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mobile-bar__chapters-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:none;color:#a1a1aa;cursor:pointer;flex-shrink:0;border-radius:6px;transition:color .15s}.mobile-bar__chapters-btn:hover{color:#fff}.mobile-bar__chapters-icon{width:20px;height:20px}.mobile-bar__overlay{display:block;position:fixed;top:0;right:0;left:0;bottom:48px;background:#00000080;z-index:997}.mobile-bar__panel{display:block;position:fixed;bottom:48px;left:0;right:0;max-height:60vh;background:#1a1a1a;border-radius:16px 16px 0 0;z-index:998;transform:translateY(100%);transition:transform .3s ease;overflow-y:auto;overscroll-behavior:contain}.mobile-bar__panel--open{transform:translateY(0)}.mobile-bar__panel-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem .75rem;position:sticky;top:0;background:#1a1a1a;border-bottom:1px solid #27272a}.mobile-bar__panel-title{font-size:1rem;font-weight:600;color:#e4e4e7}.mobile-bar__panel-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:#27272a;color:#a1a1aa;border-radius:50%;cursor:pointer}.mobile-bar__panel-close-icon{width:18px;height:18px}.mobile-bar__toc{list-style:none;margin:0;padding:.5rem 0 1rem}.mobile-bar__toc-item{border-bottom:1px solid #27272a}.mobile-bar__toc-row{display:flex;align-items:center;padding:0 1.25rem}.mobile-bar__toc-item--h3 .mobile-bar__toc-row{padding-left:2rem}.mobile-bar__toc-link{flex:1;padding:.75rem 0;text-decoration:none;color:#a1a1aa;font-size:.875rem;transition:color .15s}.mobile-bar__toc-item--h3 .mobile-bar__toc-link{font-size:.8125rem}.mobile-bar__toc-item--active .mobile-bar__toc-row{background:#ff671914}.mobile-bar__toc-item--active .mobile-bar__toc-link{color:#ff6719}.mobile-bar__toc-item--played .mobile-bar__toc-link{color:#e4e4e7}.mobile-bar__toc-audio-btn{display:flex;align-items:center;gap:.375rem;padding:.375rem .5rem;border:none;background:none;cursor:pointer;flex-shrink:0;border-radius:6px;transition:background .15s}.mobile-bar__toc-audio-btn:hover,.mobile-bar__toc-audio-btn:active{background:#ffffff14}.mobile-bar__toc-audio-time{font-size:.75rem;color:#52525b;font-variant-numeric:tabular-nums}.mobile-bar__toc-audio-icon{width:16px;height:16px;color:#52525b;transition:color .15s}.mobile-bar__toc-audio-btn:hover .mobile-bar__toc-audio-icon,.mobile-bar__toc-audio-btn:active .mobile-bar__toc-audio-icon{color:#ff6719}.mobile-bar__toc-audio-btn:hover .mobile-bar__toc-audio-time,.mobile-bar__toc-audio-btn:active .mobile-bar__toc-audio-time,.mobile-bar__toc-item--active .mobile-bar__toc-audio-time,.mobile-bar__toc-item--active .mobile-bar__toc-audio-icon{color:#ff8c4a}.mobile-bar__toc-item--audio-current .mobile-bar__toc-audio-icon{color:#ff6719}.mobile-bar__toc-item--audio-current .mobile-bar__toc-audio-time{color:#ff8c4a}.mobile-bar__toc-item--audio-playing .mobile-bar__toc-audio-btn{animation:mobile-toc-pulse 1.5s ease-in-out infinite}@keyframes mobile-toc-pulse{0%,to{opacity:1}50%{opacity:.3}}.mobile-bar__toc-item--played .mobile-bar__toc-audio-icon{color:#ff6719;background:#ff6719;border-radius:50%;padding:2px;width:20px;height:20px;color:#fff}.mobile-bar__toc-item--played .mobile-bar__toc-audio-time{color:#a1a1aa}}