.persistent-sound-player{right:16px;bottom:max(12px,env(safe-area-inset-bottom));z-index:90;color:#fff7ec;background:#203c36;border:1px solid #bca581;border-radius:12px;width:min(370px,100vw - 24px);padding:14px;font:16px/1.4 Arial,sans-serif;position:fixed;box-shadow:0 6px 30px #0004}.persistent-sound-heading{align-items:center;gap:10px;display:flex}.persistent-sound-heading>div{flex:1;min-width:0}.persistent-sound-heading b{overflow-wrap:anywhere;display:block}.persistent-sound-heading small{color:#e3d3bc;font-size:14px;display:block}.persistent-sound-player button{color:#203c36;background:#f5e5cd;border:0;border-radius:6px;min-height:44px;padding:8px 12px;font:700 14px Arial,sans-serif}.persistent-sound-player button:disabled{opacity:.6}.persistent-volume{align-items:center;gap:10px;margin-top:8px;font-size:14px;display:flex}.persistent-volume input{accent-color:#ebc99b;flex:1;min-width:0}.persistent-volume output{min-width:36px}.persistent-sound-player iframe{background:#101817;border:0;width:100%;min-width:200px;height:200px;margin-top:12px;display:block}.persistent-sound-player a{color:#fff2dc;margin-top:8px;font-size:14px;display:block}.persistent-sound-player p{margin:8px 0 0;font-size:14px}.sound-player-space{height:150px}.sound-player-space.with-video{height:355px}.lesson-music-tabs{gap:6px;margin:0 0 16px;display:flex}.lesson-music-tabs button{color:#2f4139;background:#fffaf2;border:1px solid #59675f;flex:1;min-height:44px;padding:8px 5px;font:700 14px Arial,sans-serif}.lesson-music-tabs button[aria-pressed=true],.lesson-sound-panel .soundscape-options button[aria-pressed=true]{color:#fff;background:#3e594d}.lesson-saved-sounds{gap:10px;display:grid}.lesson-saved-sounds>button{text-align:left;color:#303e35;background:#fbf6ed;border:1px solid #b0a393;justify-content:space-between;align-items:center;gap:10px;min-height:52px;padding:14px;font:16px Arial,sans-serif;display:flex}.lesson-saved-sounds>button span:first-child{overflow-wrap:anywhere;min-width:0}.lesson-saved-sounds b,.lesson-saved-sounds small{display:block}.lesson-saved-sounds small,.shared-youtube-controls small{font:14px/1.5 Arial,sans-serif}.lesson-sound-panel .lesson-saved-sounds p{font:16px/1.5 Arial,sans-serif}.shared-youtube-controls{text-align:left;gap:12px;font:16px/1.5 Arial,sans-serif;display:grid}.shared-youtube-controls label{gap:8px;display:grid}.shared-youtube-controls input{color:#253e34;background:#fffaf4;border:1px solid #a29078;width:100%;min-width:0;padding:12px;font:16px Arial,sans-serif}.shared-youtube-controls button{color:#fff8ee;background:#3d584e;border:1px solid #3d584e;min-height:44px;padding:12px;font:700 16px Arial,sans-serif}.studio-rhythm-controls{border:1px solid #9b8b76;grid-template-columns:1fr 1fr;gap:18px;margin:20px 0;padding:18px;display:grid}.studio-rhythm-controls>label{grid-template-columns:1fr auto;gap:8px;font:14px/1.5 Arial,sans-serif;display:grid}.studio-rhythm-controls input,.studio-rhythm-controls select{accent-color:#385c50;grid-column:1/-1;width:100%;min-width:0}.studio-rhythm-controls select{padding:10px;font-size:16px}.studio-rhythm-controls legend{font-weight:700}.studio-rhythm-controls p{grid-column:1/-1;margin:0;font:14px/1.5 Arial,sans-serif}.studio-rhythm-controls input:disabled{opacity:.5}@media (width<=540px){.persistent-sound-player{right:12px}.lesson-music-tabs{flex-wrap:wrap}.studio-rhythm-controls{grid-template-columns:1fr}}.lesson-sound-panel .soundscape-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.lesson-sound-panel .soundscape-options button,.lesson-sound-panel .soundscape-change,.lesson-sound-panel .sound-studio-link{letter-spacing:.03em;min-height:44px;font-size:14px}.lesson-sound-panel .soundscape-compose-note,.lesson-sound-panel .soundscape-mixer label{font-size:14px;line-height:1.5}