/* Match the user's scale-player reference; retain download indication. */
.train-sidebar .listen-panel{min-height:190px;margin:0 10px 14px;padding:26px 8px 24px;border-top:1px solid #dedbd3;border-radius:0 0 14px 14px;display:grid;grid-template-rows:96px auto;align-content:center;justify-items:center;gap:16px;background:linear-gradient(#fffefa,#faf7ef)}
.listen-panel .play{width:96px;height:96px;min-height:96px;padding:14px 6px;border-radius:50%;box-shadow:0 18px 28px #12262033;background:#122620}
.listen-panel .play>span{font-size:20px;line-height:24px;margin:0 0 7px}
.listen-panel .play b{font-size:13px;line-height:18px}
.listen-panel .play small{font-size:11px;line-height:15px;margin-top:5px;color:#b8cbc4}
.listen-panel .water-play:not(.is-loading) .water-fill{display:none}
.listen-panel .water-play.is-loading{background:#dcebe6}
.listen-panel .sound-rings i{width:104px;height:104px;border-color:#236b621f}
.listen-panel .sound-rings i:nth-child(2){width:144px;height:144px}
.listen-panel .sound-rings i:nth-child(3){width:184px;height:184px}
.listen-panel:after{content:'点击播放示范，跟随旋律视唱';position:relative;z-index:2;font-size:11px;line-height:1.6;color:#75817d;text-align:center;pointer-events:none}
@media(max-width:560px){.train-sidebar .listen-panel{min-height:190px}.listen-panel .play{width:96px;height:96px;min-height:96px}.listen-panel .sound-rings i:nth-child(3){width:184px;height:184px}}

.piano-source-switch{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.piano-source-switch button{padding:9px 12px;border:1px solid #cbd8d2;border-radius:9px;background:#fff;color:#526760;font-size:12px;cursor:pointer}.piano-source-switch button.active{background:#236b62;color:#fff;border-color:#236b62}.piano-source-switch button:focus-visible{outline:2px solid #236b62;outline-offset:3px}