/* Approved slider-centered layout. Sound and stored pitch values stay independent. */
:root{--paper:#f4f3ec;--card:#fffef9;--ink:#26382d;--muted:#6c7669;--line:#d6d9cb;--accent:#385745;--pale:#e6eadf;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--paper)}
button,input,select{accent-color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #8f6741}button{border-radius:9px}.shell{max-width:1120px;padding:16px 28px 10px;gap:12px}.masthead{border:0;min-height:42px}.brand{font-size:19px;gap:10px}.brand-mark{border:0;border-radius:0;font-size:34px;width:35px;height:36px}.brand small{letter-spacing:0;font-size:11px;margin-top:3px}.header-actions button{background:var(--card);border-radius:10px;padding:9px 15px;min-height:40px;font-size:12px}.mode-switch{gap:12px}.mode-switch button{font-size:14px;font-weight:550;flex:none;padding:9px 15px;min-height:38px}.practice-surface{flex:1;min-height:0;display:flex;flex-direction:column;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px 28px 18px}.context-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;flex:none}.context-banner .eyebrow{font-size:10px;letter-spacing:.1em;margin:0;color:var(--muted)}.context-banner h1{font:40px/1.1 Georgia,serif;letter-spacing:-.6px;margin:6px 0}.context-banner #target-summary{font-size:12px;color:var(--muted);margin:0;line-height:1.4}.context-banner .text-button{font-size:12px;white-space:nowrap;min-height:36px;padding:5px}.reference-strip{flex:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-block:1px solid var(--line)}.reference-copy{min-width:0}.reference-copy .eyebrow{font-size:9px;letter-spacing:.12em;display:block;margin:0;color:var(--muted)}#reference-voicing{font-size:17px;line-height:1.35;margin:3px 0 0;letter-spacing:.02em}#drone-register{display:block;margin-top:3px;font-size:10px;line-height:1.2;color:var(--muted)}.drone-octave{gap:6px;flex-shrink:0}.drone-octave button{border:1px solid var(--line);background:var(--card);border-radius:9px;padding:7px 11px;min-height:38px;color:var(--ink);font-size:12px}.audio-dock{display:grid;grid-template-columns:auto auto auto minmax(100px,1fr) auto;gap:8px;padding:0;border:0;background:none}.audio-dock .transport{display:contents}.audio-dock .play-button{grid-column:1;grid-row:1;border-radius:9px;min-width:147px;min-height:44px;padding:8px 16px 17px;background:var(--accent);font-size:12px}.play-button:hover{background:#294735}.audio-dock #stop{grid-column:2;grid-row:1}.audio-dock #mute-drone{grid-column:3;grid-row:1;min-width:100px}.audio-dock .secondary-button{border-color:var(--line);background:var(--card);font-weight:500;min-height:44px;border-radius:9px;font-size:12px;padding:8px 13px}.audio-dock #mute-drone[aria-pressed=true]{background:var(--ink);color:white}.audio-dock .volume-control{grid-column:4;grid-row:1;display:flex;align-items:center;justify-self:end;width:100%;max-width:255px;gap:8px;font-size:11px;height:auto;margin:0}.audio-dock .volume-control input{flex:1;min-width:0;width:100%;height:22px;margin:0}.audio-dock .volume-control span{position:static;min-width:28px;font-size:10px}.audio-dock #audio-info{grid-column:5;grid-row:1;border:0;padding:4px 8px;font-size:18px;background:none;min-width:32px;min-height:38px;margin:0}#playback-status{font-size:8px;bottom:4px;line-height:1.05}#main{flex:1;min-height:0}#practice-content{height:100%;display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:0;background:none;border:0}#practice-content .unit{flex:none;min-width:0}#practice-content .adjust-unit{flex:1;min-height:128px;display:flex;align-items:center}#practice-content .tuning-control{width:100%}.tuning-ends{font-size:11px;gap:6px}#listening-prompt{font-size:14px;color:var(--ink)}.adjust-row{gap:20px;margin-top:16px}.adjust-row button{height:54px;width:54px;min-height:54px;border-radius:10px;border-color:var(--line);font-size:26px}.adjust-row input{appearance:none;height:14px;min-height:14px;border:0;border-radius:20px;background:#dfe5d8;outline-offset:9px;cursor:ew-resize;margin:0}.adjust-row input::-webkit-slider-thumb{appearance:none;height:50px;width:32px;border-radius:10px;border:3px solid var(--card);background:var(--accent);box-shadow:0 2px 8px #273a2826}.adjust-row input::-moz-range-thumb{height:44px;width:26px;border-radius:8px;border:3px solid var(--card);background:var(--accent);box-shadow:0 2px 8px #273a2826}.adjust-row input:disabled{opacity:.6;cursor:default}.fine-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}.fine-row button{background:var(--card);border:1px solid var(--line);border-radius:7px;font-size:11px;padding:5px 10px;min-height:30px;color:var(--ink)}.fine-row button[aria-pressed=true]{background:var(--pale)}.fine-row .control-hint{display:block;font-size:10px!important;line-height:1.3;margin:0!important;color:var(--muted)}.lab-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:5px}.lab-bottom .visual-header{padding:0;background:none;border-radius:0;gap:9px;margin:0;flex-shrink:0}.lab-bottom .visual-header label{font-size:11px;font-weight:400}.lab-bottom .toggle{width:32px;height:19px}.lab-bottom .toggle:before{height:11px;width:11px}.lab-bottom .toggle:checked:before{transform:translateX(13px)}.lab-actions{display:flex;flex-wrap:nowrap;align-items:center;gap:8px;margin:0}.lab-actions .secondary-button{border-radius:9px;border-color:var(--line);padding:10px 15px;min-height:42px;font-size:12px;font-weight:500;background:var(--card)}.lab-actions #check{background:var(--accent);color:white;border-color:var(--accent)}.lab-actions .text-button{padding:6px;min-height:36px;white-space:nowrap;font-size:11px}.lab-actions .text-button span{font-size:13px;margin-left:3px}#result-copy{gap:12px;font-size:12px;line-height:1.4;color:var(--ink)!important}.acceptance-circle{height:52px;width:52px;border-width:1px;font-size:16px;font-weight:500}.acceptance-circle.within{background:#edf2e6;border-color:#7d9d75}.compare-buttons{gap:7px}.compare-buttons button{border-radius:7px;min-height:32px;font-size:10px;padding:6px 10px}.unit #result-detail{font-size:10px;line-height:1.3;margin-top:5px}#beat-canvas{height:46px;border-radius:7px}#visual-status{font-size:10px;line-height:1.3;margin-top:3px}.live-listening{flex:1!important;min-height:100px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px}.live-symbol{font:90px/.8 Georgia,serif;color:#7b936a}.unit .practice-prompt{font:19px/1.5 Georgia,serif!important;max-width:42ch;margin:0}.live-actions{display:flex;justify-content:center;gap:16px;align-items:center}.live-actions .secondary-button{border:1px solid var(--line);border-radius:9px;background:var(--card);font-size:12px;min-height:40px;padding:8px 14px;font-weight:500}.live-actions .text-button{font-size:11px}.quiet-option{border-radius:8px;padding:9px 12px;background:var(--pale);width:min(100%,560px);margin:auto}.quiet-option label{font-size:12px;font-weight:500}.quiet-option p{font-size:10px!important;line-height:1.4}.practice-footer{flex:none;padding:0;border:0;display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:18px;line-height:1.3}.practice-footer .status{font-size:10px}.practice-footer #pitch-indicator{color:var(--muted);border:0;background:none;padding:0;font-size:10px;min-height:18px;line-height:1.3;max-width:65%;text-align:right}.status.sounding i{background:#708966}.pager button,#close-tools{border-radius:7px}.pager span{font-size:10px}#practice-content.paged{padding:0;gap:8px;border:0;border-radius:0;background:none}#practice-content.paged .adjust-unit,#practice-content.paged .live-listening{flex:none!important;min-height:0}#practice-content.paged .live-symbol{display:none}#practice-content.paged .practice-prompt{font-size:14px!important}#tool-content .reference-controls{grid-template-columns:minmax(90px,.75fr) minmax(0,1.5fr)}#tool-content .reference-controls .muted{display:block;font-size:10px}#tool-content .reference-controls #root-note{min-width:0}#tool-content .note-display{padding:10px 0;gap:20px}#tool-content .note{font-size:48px}#tool-content .note sub{font-size:18px}#tool-content .ratio-label span{font-size:21px}#tool-content .ratio-label small{max-width:70px}#tool-content select{border-radius:7px}dialog{background:var(--card);border-radius:16px}
@media(max-width:650px){.shell{padding:12px 12px 8px;gap:10px}.masthead{min-height:35px}.brand{font-size:15px;gap:7px}.brand-mark{width:28px;font-size:28px;height:29px}.brand small{font-size:9px}.header-actions{gap:5px}.header-actions button{font-size:11px;min-height:34px;padding:7px 9px}.mode-switch{gap:3px}.mode-switch button{flex:1;text-align:center;font-size:12px;padding:8px 1px;min-height:35px}.practice-surface{padding:16px 16px 14px;border-radius:14px;gap:12px}.context-banner{gap:7px}.context-banner h1{font-size:33px;margin:5px 0}.context-banner .eyebrow{font-size:9px}.context-banner #target-summary{font-size:11px}.context-banner .text-button{font-size:10px}.reference-strip{gap:8px;padding:9px 0}#reference-voicing{font-size:14px}#drone-register{font-size:9px}.drone-octave{gap:4px}.drone-octave button{font-size:11px;padding:5px 8px;min-height:35px}.reference-copy .eyebrow{font-size:8px}.audio-dock{grid-template-columns:minmax(0,1fr) auto auto auto;gap:7px}.audio-dock .play-button{min-width:0;font-size:11px;gap:5px;padding:6px 7px 17px;min-height:42px}.audio-dock #stop{padding:8px;min-height:42px;font-size:11px}.audio-dock #mute-drone{min-width:0;min-height:42px;font-size:11px;padding:8px}.audio-dock #audio-info{grid-column:4;grid-row:1;min-width:23px;min-height:34px;padding:0 3px}.audio-dock .volume-control{grid-column:1/-1;grid-row:2;width:100%;max-width:none;height:20px;font-size:10px}.audio-dock .volume-control input{min-width:0;max-width:none;flex:1;width:auto;height:20px}.audio-dock .volume-control span{min-width:27px}.tuning-ends{font-size:10px}#listening-prompt{font-size:12px}.adjust-row{gap:10px;margin-top:12px}.adjust-row button{width:42px;height:48px;min-height:48px;font-size:23px}.adjust-row input::-webkit-slider-thumb{height:48px;width:30px}.adjust-row input::-moz-range-thumb{height:42px;width:24px}.fine-row{margin-top:10px}.fine-row button{font-size:10px;min-height:29px;padding:5px 8px}.fine-row .control-hint{font-size:9px!important;max-width:150px;text-align:right}#practice-content .adjust-unit{min-height:122px}.lab-bottom{display:flex;flex-direction:column;align-items:stretch;gap:10px}.lab-bottom .visual-header{justify-content:flex-start;gap:10px}.lab-actions{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr) auto;gap:7px}.lab-actions .secondary-button{padding:9px 8px;font-size:11px;min-height:40px}.lab-actions .text-button{font-size:10px;padding:5px 0}.lab-actions .text-button span{display:none}.unit #result-detail{font-size:9px}.acceptance-circle{width:46px;height:46px;font-size:14px}#result-copy{font-size:11px;gap:10px}.compare-buttons button{font-size:10px;min-height:30px;padding:5px 8px}.unit .practice-prompt{font-size:18px!important}.live-symbol{font-size:75px}.live-actions{gap:8px;flex-wrap:wrap}.live-actions .secondary-button{font-size:11px}.live-actions .text-button{font-size:10px}.practice-footer .status{font-size:9px}.practice-footer #pitch-indicator{font-size:9px;max-width:60%}.quiet-option label{font-size:11px}.quiet-option p{font-size:9px!important}#tool-content .reference-controls{gap:10px}}
@media(max-height:680px){.shell{gap:8px;padding-top:8px;padding-bottom:6px}.practice-surface{padding-top:13px;padding-bottom:12px;gap:9px}.context-banner h1{font-size:31px;margin:3px 0}.reference-strip{padding-block:7px}.fine-row{margin-top:8px}#practice-content{gap:7px}.adjust-row{margin-top:8px}.adjust-row button{height:46px;min-height:46px}.lab-bottom{gap:7px}.practice-footer{min-height:14px}.live-symbol{font-size:60px}}
/* Very short/zoomed views retain transport and use explicit pages for practice. */
@media(max-height:450px){.shell{gap:4px;padding:5px 10px}.masthead{min-height:28px}.brand{font-size:14px}.brand small,.brand-mark{display:none}.header-actions button{min-height:27px;padding:4px 9px;font-size:10px}.mode-switch button{min-height:27px;padding:4px;font-size:11px}.practice-surface{padding:7px 10px;gap:6px;border-radius:10px}.context-banner .eyebrow{display:none}.context-banner h1{font-size:23px;margin:0}.context-banner #target-summary{font-size:10px;margin-top:2px}.context-banner .text-button{font-size:9px;min-height:25px}.reference-strip{padding:4px 0}.reference-copy .eyebrow{display:none}#reference-voicing{font-size:12px;margin:0}#drone-register{font-size:8px;margin-top:1px}.drone-octave button{min-height:28px;padding:4px 7px;font-size:10px}.audio-dock{gap:5px}.audio-dock .play-button{min-height:33px;padding:4px 7px 13px;font-size:10px;line-height:12px}.audio-dock .secondary-button,.audio-dock #mute-drone,.audio-dock #stop{min-height:33px;padding:5px 7px;font-size:10px}.audio-dock #audio-info{min-height:29px}.audio-dock .volume-control{height:17px}.audio-dock .volume-control input{height:17px}#playback-status{font-size:7px;bottom:3px}.practice-footer{min-height:12px}.practice-footer .status,.practice-footer #pitch-indicator{font-size:8px;min-height:12px}.practice-footer .status i{height:4px;width:4px}#practice-content .adjust-unit{min-height:88px}.adjust-row{margin-top:4px;gap:10px}.adjust-row button{width:34px;height:34px;min-height:34px;font-size:20px}.adjust-row input{height:10px}.adjust-row input::-webkit-slider-thumb{height:34px;width:25px}.adjust-row input::-moz-range-thumb{height:28px;width:19px}.fine-row{margin-top:5px}.fine-row button{min-height:24px;font-size:9px;padding:2px 6px}.fine-row .control-hint{font-size:8px!important}#listening-prompt{font-size:10px}.tuning-ends{font-size:9px}.lab-bottom{gap:6px}.lab-bottom .visual-header label{font-size:10px}.lab-bottom .toggle{height:17px;width:30px}.lab-bottom .toggle:before{height:9px;width:9px}.lab-actions .secondary-button{min-height:30px;padding:5px 8px;font-size:10px}.lab-actions .text-button{min-height:28px}.acceptance-circle{width:36px;height:36px;font-size:12px}#result-copy{font-size:10px;gap:8px}.compare-buttons button{min-height:27px;font-size:9px;padding:4px 8px}.unit #result-detail{font-size:9px;line-height:1.2}#beat-canvas{height:30px}#visual-status{font-size:9px}.live-symbol{display:none}.live-listening{min-height:50px}.unit .practice-prompt{font-size:14px!important}.quiet-option{padding:6px 9px}.live-actions .secondary-button{min-height:30px;padding:5px 8px;font-size:10px}.pager button{min-height:25px;padding:3px 9px}.pager span{font-size:9px}#tool-content .note{font-size:34px}#tool-content .note sub{font-size:14px}#tool-content .note-display{padding:5px 0;gap:10px}}
@media(max-height:300px){.shell{padding:3px 8px;gap:3px}.context-banner{display:none}.reference-strip{padding:3px 0}.practice-surface{gap:4px;padding:4px 8px}.reference-copy #drone-register{display:none}.audio-dock .volume-control{height:15px}.audio-dock .volume-control input{height:15px}#practice-content{gap:5px}.practice-footer{display:none}.fine-row .control-hint{display:none}#practice-content.paged .adjust-unit{min-height:0}.lab-bottom{display:flex;flex-direction:row;align-items:center;gap:6px}.lab-bottom .visual-header{flex-direction:column;gap:3px}.lab-bottom .visual-header label{font-size:8px;max-width:47px;text-align:center}.lab-actions{flex:1;display:grid;grid-template-columns:1fr 1fr auto;gap:4px}.lab-actions .secondary-button{font-size:9px;padding:4px;min-height:30px}.lab-actions .text-button{font-size:9px}}
#result-copy{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px}.result-text{min-width:0}.unit #result-brief{font-size:10px;line-height:1.3;margin-top:5px}#result-copy .compare-buttons{flex-direction:column;gap:5px}#result-copy .compare-buttons button{min-height:27px;padding:4px 9px}.checked .context-banner h1{font-size:29px;margin:2px 0}.checked .context-banner .eyebrow{font-size:9px}.checked .reference-copy .eyebrow{display:none}.checked .reference-strip{padding-block:6px}.checked .practice-surface{gap:9px}.checked #practice-content .adjust-unit{min-height:106px}.checked .adjust-row{margin-top:7px}.checked .adjust-row button{height:42px;min-height:42px}.checked .adjust-row input::-webkit-slider-thumb{height:42px}.checked .adjust-row input::-moz-range-thumb{height:36px}.checked .fine-row{margin-top:7px}.checked #beat-canvas{height:35px}.checked #practice-content{gap:8px}
@media(max-width:650px){#result-copy{grid-template-columns:auto minmax(0,1fr);gap:7px 10px}#result-copy .compare-buttons{grid-column:1/-1;flex-direction:row;justify-content:flex-end}.unit #result-brief{font-size:9px;line-height:1.3;margin-top:3px}.checked .practice-surface{gap:9px}.checked .context-banner h1{font-size:29px}}
@media(max-height:450px){#result-copy{gap:5px 8px}#result-copy .compare-buttons{flex-direction:row;flex-wrap:wrap;justify-content:flex-start}.checked .context-banner h1{font-size:22px}.checked .practice-surface{gap:6px}.checked #practice-content .adjust-unit{min-height:80px}.checked .adjust-row button{height:32px;min-height:32px}.checked .adjust-row input::-webkit-slider-thumb{height:32px}.checked .adjust-row input::-moz-range-thumb{height:26px}.checked .adjust-row{margin-top:4px}.checked .fine-row{margin-top:4px}.checked #beat-canvas{height:28px}.checked #practice-content{gap:6px}.unit #result-brief{font-size:8px}}

@media(max-height:300px){.checked .practice-surface{gap:4px}.checked #practice-content{gap:5px}#practice-content>.context-banner{display:flex;flex:none}#practice-content>.reference-strip{flex:none;width:100%;margin:0}#practice-content>.context-banner h1{font-size:23px}#practice-content>.context-banner .eyebrow{display:block;font-size:8px}#practice-content>.context-banner #target-summary{font-size:9px}#practice-content>.context-banner .text-button{font-size:9px}.unit .practice-prompt,#practice-content.paged .practice-prompt{font-size:12px!important}}
.context-banner h1 sub{font-size:.56em;vertical-align:baseline;position:relative;bottom:-.05em;margin-left:1px}
@media(max-width:650px){#tool-content .note-display{gap:10px}#tool-content .note{font-size:36px}#tool-content .note sub{font-size:15px}#tool-content .ratio-label{padding-left:10px}#tool-content .ratio-label span{font-size:18px}#tool-content .ratio-label small{font-size:8px}}