html body #hollow90 .mm61-key.echo-playing268,html body #hollow90 .mm61-echo span.echo-playing268{background:#bdeee5!important;color:#123e39!important;border-color:#168a7c!important;box-shadow:0 0 0 3px #168a7c,0 0 20px #66d9c7!important;transform:translateY(-2px)}
html body #hollow90 [data-mm61="echo"]{min-width:170px}html body #hollow90 .mm61-status{min-height:4.5em;box-sizing:border-box}

/* v271: clear visual feedback without rebuilding the stage or keyboard. */
html body #hollow90 .mm61-stage{position:relative}
html body #hollow90 .mm271-feedback{position:absolute;inset:0;z-index:12;pointer-events:none;overflow:hidden;border-radius:inherit}
html body #hollow90 .mm271-star{position:absolute;left:var(--x);top:var(--y);color:#ffe990;font-size:clamp(24px,4vw,52px);line-height:1;text-shadow:0 0 8px #fff,0 0 20px #ffc845,0 0 36px #ffae28;transform:translate(-50%,-50%);animation:mm271-star-arrive 1.2s var(--delay) both}
html body #hollow90 .mm271-message{position:absolute;bottom:5%;left:50%;transform:translateX(-50%);width:max-content;max-width:92%;box-sizing:border-box;padding:10px 18px;border:2px solid #ffe4a2;border-radius:20px;background:rgba(42,28,65,.95);box-shadow:0 4px 24px #29194066;color:#fff6d9;text-align:center;display:flex;align-items:center;flex-direction:column;gap:5px;font-family:inherit}
html body #hollow90 .mm271-message strong{font-size:clamp(19px,2.5vw,28px);line-height:1.15;color:#ffe493}
html body #hollow90 .mm271-message span{font-size:clamp(12px,1.6vw,16px);line-height:1.3;color:#fff8ed}
html body #hollow90 .mm271-message button{pointer-events:auto;min-height:44px;padding:7px 18px;margin:2px 0 0;border-radius:24px;border:1px solid #ffeba8;background:#ffe5a3;color:#3b244d;font-family:inherit;font-weight:700;font-size:14px;line-height:1.2;cursor:pointer;touch-action:manipulation}
html body #hollow90 .mm271-message button:focus-visible{outline:3px solid #fff;outline-offset:3px}
html body #hollow90 .mm271-retry .mm271-message{border-color:#c4eee9;background:rgba(26,56,67,.96)}
html body #hollow90 .mm271-retry strong{color:#dcfff7}
@keyframes mm271-star-arrive{0%{opacity:0;transform:translate(-50%,-50%) scale(.25) rotate(-18deg)}60%{opacity:1;transform:translate(-50%,-50%) scale(1.2) rotate(8deg)}100%{opacity:1;transform:translate(-50%,-50%) scale(1) rotate(0)}}
@media(max-height:500px){html body #hollow90 .mm271-message{padding:6px 12px;gap:2px;bottom:3%}html body #hollow90 .mm271-message strong{font-size:18px}html body #hollow90 .mm271-message span{font-size:12px}}
@media(prefers-reduced-motion:reduce){html body #hollow90 .mm271-star{animation:none}}