:root{font:16px/1.45 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#253d32;background:#f5f6ef;color-scheme:light;--line:#d5decd;--green:#365e48;--paper:#fffef9;--muted:#66765e}*{box-sizing:border-box}body{margin:0;min-width:280px}button,input,select,textarea{font:inherit;color:inherit}a{color:var(--green)}button,select,summary{cursor:pointer}button{min-height:44px;padding:9px 15px;border:1px solid var(--line);border-radius:8px;background:var(--paper);font-size:14px;font-weight:650;touch-action:manipulation}button:hover:enabled{background:#e7eedf;border-color:#a2b497}button.primary{background:var(--green);border-color:var(--green);color:white}button.primary:hover:enabled{background:#284c38}button:disabled{opacity:.42;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,canvas:focus-visible{outline:3px solid #bd7430;outline-offset:3px}[hidden]{display:none!important}
header{display:flex;align-items:center;gap:20px;padding:12px 28px;border-bottom:1px solid var(--line);min-height:68px}header>a{font-size:13px;text-decoration:none}.brand-name{font-size:19px;font-weight:750;letter-spacing:-.5px;flex:1}.brand-name>span{font-size:12px;font-weight:400;color:var(--muted);margin-left:12px;letter-spacing:0}header button{min-width:90px}main{max-width:1480px;margin:auto;padding:0 28px 26px}.studio-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:14px 0}.studio-intro h1{font-size:clamp(23px,2.5vw,32px);line-height:1.15;letter-spacing:-.7px;margin:0 0 5px}.intro{font-size:13px;color:var(--muted);margin:0}h2{font-size:20px;line-height:1.3;margin:12px 0}#classroom-bar{display:flex;align-items:center;gap:10px;flex:none}#classroom-recordings{display:none}
.recording-studio{border:1px solid #cbd7c2;border-radius:14px;background:var(--paper);box-shadow:0 8px 28px #34442a08;overflow:clip;display:flex;flex-direction:column;min-height:560px;height:calc(100dvh - 176px);max-height:1100px}.transport{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;background:#edf2e6;border-bottom:1px solid var(--line);padding:12px 18px;flex:none}.transport-label{font-size:12px;font-weight:650;color:var(--muted);letter-spacing:.3px}.record-controls{display:flex;align-items:center;justify-content:center;gap:8px}.record-controls button{min-width:135px;min-height:50px;font-size:15px}#stop{min-width:150px}#clock{font-variant-numeric:tabular-nums;font-size:22px;font-weight:650;min-width:65px;text-align:center}#demo{justify-self:end;font-size:12px;background:transparent}#status{order:5;padding:8px 18px;margin:0;border-top:1px solid var(--line);font-size:12px;color:var(--muted);min-height:34px;background:#f7f9f1}.privacy-note{order:6;margin:0!important;padding:0 18px 8px;font-size:11px!important;background:#f7f9f1}.capture-hint{margin:7px 18px 0;font-size:12px}.small{font-size:13px;color:var(--muted)}body[data-recording=true] #stop{color:white;background:#a04631;border-color:#a04631}body[data-recording=true] #clock{color:#a04631}body[data-recording=true] .transport{background:#f7eee7}body[data-recording=true] .record-controls #record{opacity:.4}
#review{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 18px 0;flex:none}#review h2{font-size:14px;font-weight:650;margin:0}#speed-note{font-size:11px;margin:0}audio{display:block;width:100%}.playback-controls{display:flex;align-items:center;gap:10px;padding:7px 18px;flex-wrap:wrap;flex:none}.playback-controls label{display:flex;align-items:center;gap:7px;font-size:12px;margin:0}.playback-controls select,#tonic{min-height:40px;padding:6px 9px;border:1px solid var(--line);border-radius:7px;background:var(--paper);font-size:13px}.playback-controls button{min-height:40px;font-size:13px}#play{min-width:102px}#play-time{font-size:12px;font-variant-numeric:tabular-nums;margin-left:auto}#download-audio{font-size:12px}
.visual{display:flex;flex-direction:column;flex:1;min-height:0;padding:0 18px 7px;margin:0}.view-controls{display:flex;align-items:center;gap:10px;border-block:1px solid #e2e7db;padding:5px 0;flex:none}.view-controls label{display:flex;align-items:center;gap:7px;margin:0;font-size:12px}.view-controls button{font-size:12px;min-height:38px;padding:6px 10px}#zoom{margin-left:auto}#tonic{max-width:230px}.tonic-control{min-width:0}#tonic-status{font-size:11px;line-height:1.35;margin:6px 0 2px;color:#63715d;flex:none;min-height:15px}#pitch-panel{display:flex;flex-direction:column;flex:5;min-height:0}#sound-panel{display:flex;flex-direction:column;flex:1.4;min-height:64px;border-top:1px solid #e3e8dc}.lane-title{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:4px;min-height:22px;font-size:12px;flex:none}.lane-title span{font-size:11px;color:var(--muted)}#pitch-now{font-size:17px;color:var(--green);font-variant-numeric:tabular-nums}canvas{display:block;width:100%;cursor:crosshair;touch-action:pan-y pinch-zoom}#pitch{height:0;min-height:45px;flex:1}#spectrogram{height:0;min-height:60px;flex:1.4;border-top:1px solid #e4e9df}#sound{height:0;min-height:25px;flex:1}#input-feedback,#color-status,#view-hint{font-size:10px;line-height:1.35;margin:3px 0 0;flex:none}#view-hint{color:#7b8575}#input-feedback{font-weight:550}
.support-panels{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}details,#sharing{border:1px solid var(--line);border-radius:10px;background:var(--paper);padding:12px 16px;margin:0}summary{font-size:14px;font-weight:650;min-height:24px;list-style-position:inside}details[open]>summary{padding-bottom:12px;border-bottom:1px solid #e3e8dc;margin-bottom:12px}.support-panel,#sharing,#library{grid-column:1/-1}#sharing{display:grid;grid-template-columns:1fr auto;column-gap:20px;align-items:center}#sharing>p{margin:3px 0;font-size:12px}#sharing>.actions{grid-column:2;grid-row:1/5}#sharing>p:nth-last-child(-n+2){grid-column:1/-1}#sharing #analysis{font-weight:600}#sharing #export{font-size:13px}#save-status[data-error=true],#analysis[data-error=true]{color:#9d3d24}#phrase-review h2{margin-top:0}#phrase-review .small{max-width:900px}label{display:block;margin:10px 0}input:not([type=checkbox]),textarea,#library select{min-height:44px;padding:8px 10px;border:1px solid #b5c4ad;border-radius:7px;background:white;max-width:100%}#library label{display:inline-flex;flex-direction:column;width:calc(33.3% - 15px);margin-right:12px;font-size:12px;vertical-align:top}#library input,#library select{width:100%;margin-top:5px}#library input[type=file]{font-size:12px}#library>a{font-size:13px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}#phrase-list{margin-bottom:12px}#phrase-list button{max-width:100%;white-space:normal;overflow-wrap:anywhere;text-align:left}#phrase-list button[aria-pressed=true]{border:2px solid var(--green)}.phrase-playing{background:#e9d7a9!important}#phrase-review textarea,#phrase-pinyin{display:block;width:100%}#phrase-start,#phrase-end{display:block;width:110px}input[type=checkbox]{width:20px;height:20px;vertical-align:middle;accent-color:var(--green)}#local-recall{margin-top:12px;font-size:13px}#local-recall>button,#local-recall>a{margin-right:8px}#view-help{grid-column:1/-1;font-size:13px}
.classroom{height:100dvh;overflow:hidden}.classroom header,.classroom .studio-intro,.classroom .support-panels,.classroom main>details,.classroom .capture-hint,.classroom .privacy-note,.classroom #review{display:none!important}.classroom main{height:100dvh;max-width:none;padding:8px 16px;display:flex;flex-direction:column;gap:6px}.classroom .studio-heading{padding:0;flex:none}.classroom #classroom-bar{width:100%;justify-content:space-between}.classroom #classroom-recordings{display:flex;align-items:center;gap:10px;margin:0;min-width:0;max-width:70%}.classroom #classroom-takes{min-width:0;max-width:100%;min-height:44px}.classroom .recording-studio{flex:1;min-height:0;height:auto;max-height:none}.classroom .transport{padding:6px 12px}.classroom #demo{display:none}.classroom #view-hint{display:none}.classroom #status{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.classroom .visual{padding-inline:12px}.classroom #pitch-panel{flex:5}.classroom #sound-panel{flex:1.3}
@media(max-width:900px){header{padding:10px 16px}.brand-name>span{display:none}main{padding-inline:16px}.transport{grid-template-columns:1fr auto;gap:8px}.transport-label{display:none}.record-controls{justify-content:flex-start}.record-controls button{min-width:112px;font-size:14px}#stop{min-width:132px}#review{align-items:flex-start}#review h2{max-width:45%}#speed-note{max-width:53%}.recording-studio{height:calc(100dvh - 170px);min-height:585px}.studio-intro .intro{max-width:470px}#sharing{display:block}#sharing .actions{margin:10px 0}#library label{width:calc(50% - 16px)}#library label:last-of-type{width:100%}}
@media(max-width:599px){header{gap:12px;padding:10px 12px;min-height:60px}header>a{font-size:11px}.brand-name{font-size:16px}header button{min-width:0;font-size:12px;padding:8px 10px}main{padding:0 10px 20px}.studio-heading{align-items:flex-start;padding:12px 2px;gap:10px}.studio-intro h1{font-size:23px}.intro{font-size:12px;line-height:1.4}#fullscreen{font-size:11px;padding:7px;min-height:40px;white-space:nowrap}.recording-studio{height:auto;min-height:0;border-radius:11px}.transport{grid-template-columns:1fr;padding:10px;gap:7px}.record-controls{justify-content:center;width:100%;gap:6px}.record-controls button{padding:8px 9px;min-width:0;flex:1;font-size:13px}#stop{min-width:0}#clock{font-size:19px;min-width:48px}#demo{justify-self:center;min-height:36px;padding:5px 10px}.capture-hint{margin:7px 10px;font-size:11px}.visual{padding:0 10px 8px;min-height:380px;flex:none}#pitch-panel{flex:none}#pitch{height:120px;flex:none}#spectrogram{height:130px;flex:none}#sound-panel{flex:none}#sound{height:50px;flex:none}.lane-title{font-size:11px}.lane-title span{font-size:10px}#tonic{max-width:180px;font-size:12px;min-height:44px}.view-controls{flex-wrap:wrap;gap:6px}.view-controls button{min-height:44px;font-size:11px;padding:6px 8px}.tonic-control{flex:1 0 100%}#zoom{margin-left:auto}#tonic-status{font-size:11px;margin-block:6px}#review{padding:6px 10px 0;display:block}#review h2,#speed-note{max-width:none}#review h2{font-size:13px}#speed-note{margin-top:4px}.playback-controls{padding:8px 10px;gap:7px}.playback-controls button,.playback-controls select{min-height:44px}.playback-controls label{font-size:11px}#play{min-width:76px}#download-audio{font-size:11px}#play-time{font-size:11px}#status{padding:8px 10px;font-size:11px}.privacy-note{padding:0 10px 8px;font-size:10px!important}.support-panels{display:flex;flex-direction:column;gap:10px}.support-panels>*{width:100%}details,#sharing{padding:12px}#library label{width:100%;margin-right:0}.actions button{max-width:100%;white-space:normal}#local-recall>button{margin-bottom:8px}.classroom main{padding:5px;gap:4px}.classroom #classroom-recordings{max-width:65%}.classroom #classroom-recordings>span{display:none}.classroom #classroom-takes{font-size:12px}.classroom .transport{grid-template-columns:1fr;padding:5px}.classroom .visual{flex:1;min-height:0}.classroom #pitch-panel,.classroom #sound-panel{display:flex;min-height:0}.classroom #pitch,.classroom #spectrogram,.classroom #sound{height:0;min-height:0;flex:1}.classroom #spectrogram{flex:1.4}.classroom #input-feedback,.classroom #color-status{font-size:9px}.classroom #tonic-status{font-size:10px}.classroom .view-controls{gap:4px}.classroom .tonic-control{flex:initial}.classroom #tonic{max-width:140px;min-height:36px}.classroom .view-controls button{min-height:36px}.classroom #status{min-height:0;font-size:10px}}

/* The two transports share one studio row so the graphs keep useful height. */
.studio-tools{order:1;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0 10px;padding:4px 18px;border-bottom:1px solid #e2e7db;flex:none}.studio-tools .playback-controls{padding:0;gap:8px}.studio-tools .view-controls{border:0;padding:0;margin-left:auto;gap:8px}.studio-tools #play-time{margin-left:0}.studio-tools #zoom{margin-left:0}#review{order:2;padding:4px 18px 0;justify-content:flex-end}#review h2{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}#speed-note{max-width:none;font-size:10px}.visual{order:3}#pitch{min-height:80px}#spectrogram{min-height:100px}#sound{min-height:35px}.recording-studio{min-height:540px}#status{min-height:30px;padding-block:6px}.privacy-note{padding-bottom:6px}#view-help .capture-hint{margin:8px 0}#view-help #view-hint{font-size:13px;margin:8px 0}
@media(max-width:1050px){.studio-tools{gap:6px;padding:6px 12px}.studio-tools .view-controls{margin-left:0}.recording-studio{min-height:590px}#tonic-status{margin-top:8px}}
@media(max-width:599px){.studio-tools{display:block;padding:6px 10px}.studio-tools .playback-controls{padding-bottom:6px;gap:7px}.studio-tools .view-controls{flex-wrap:wrap}.studio-tools .tonic-control{flex:1 0 100%}.studio-tools #zoom{margin-left:auto}.recording-studio{min-height:0}#review{padding-inline:10px}#pitch{min-height:0}#spectrogram{min-height:0}#sound{min-height:0}.classroom .studio-tools{padding:4px 6px}.classroom .studio-tools .tonic-control{flex:initial}.classroom .recording-studio{min-height:0}}

.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0!important}.recording-tray{display:flex;gap:12px;overflow-x:auto;padding:5px 2px 12px;scrollbar-gutter:stable}.recording-card{flex:0 0 230px;text-align:left;white-space:normal;display:flex;flex-direction:column;gap:5px;padding:12px 14px;background:#f8faf3;border:1px solid #d5decd;min-width:0}.recording-card[aria-pressed=true]{border:2px solid #365e48;padding:11px 13px;background:#edf3e7}.recording-card strong{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;width:100%}.recording-card>span{font-size:11px;color:#6c7b63}.recording-sketch{width:100%;height:38px;background:#eef2e8;border-radius:5px}.recording-sketch path{fill:none;stroke:#476e56;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.tray-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 0}.tray-heading h3{font-size:14px;margin:0}.tray-heading>span{font-size:11px;color:#66765e}.library-notice{font-size:12px;color:#66765e}.session-history{border-top:1px solid #d5decd;margin-top:15px;padding-top:5px}.session-card{flex-basis:210px}.session-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:10px 0}.session-actions strong{font-size:13px}.session-actions button{font-size:12px}#session-steps{max-height:240px;overflow:auto;margin:0 0 12px;padding:10px 10px 10px 30px;font-size:12px;background:#f4f7ef;border-radius:8px}#session-steps li{margin:5px 0}#session-steps li span{font-variant-numeric:tabular-nums;color:#75806d}#select-section[aria-pressed=true]{background:#e7d7a8;border-color:#b78a33}body[data-selecting=true] canvas{touch-action:none;cursor:crosshair}#phrase-list button{display:block;max-width:300px;background:#f5f1e3}#phrase-undo{margin:0 8px 10px}#phrase-remove{font-weight:500;color:#7f4b35}#phrase-reflection{min-height:100px}#phrase-tools[open]{border-color:#b9c7ad}#session-status{max-width:70%;text-align:right}
@media(max-width:599px){.recording-card{flex-basis:225px}.session-actions button{width:100%}.studio-tools .view-controls{gap:5px}.studio-tools #tonic{max-width:195px}.studio-tools .view-controls button{flex:1}#session-status{max-width:60%}}

/* Language stays reachable in the projected view too. */
#language{white-space:nowrap;flex:none}.classroom header{display:flex!important;height:60px;min-height:60px}.classroom main{height:calc(100dvh - 60px)}
@media(max-width:380px){header{gap:7px}.brand-name{font-size:14px}header #language{font-size:11px;padding-inline:7px}}

/* Record on the right; the take tray is the next step in the same studio. */
.recording-studio{height:auto;min-height:0;max-height:none;overflow:visible}
.transport{display:flex;justify-content:space-between;padding:10px 18px;border-radius:14px 14px 0 0;gap:12px}
.transport #demo{order:1;justify-self:auto;margin:0}
.transport .record-controls{order:2;margin-left:auto;justify-content:flex-end;width:auto}
#library{position:relative;order:1;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:12px 18px 8px;background:#f9fbf4;flex:none}
#library>summary{padding:0 40px 0 0;margin:0 0 6px;border:0;font-size:13px;min-height:20px}
#library>.recording-count{position:absolute;right:20px;top:13px;font-size:12px;color:var(--muted)}
#library>.recording-tray{padding-bottom:6px;gap:10px}
#library>.recording-tray .recording-card{flex-basis:215px;gap:3px;padding:8px 11px}
#library>.recording-tray .recording-card[aria-pressed=true]{padding:7px 10px}
#library>.recording-tray .recording-sketch{height:26px}
#library>.recording-tray .recording-card strong{font-size:12px}
#recording-empty{font-size:12px;color:var(--muted);margin:7px 0}
.first-recording{font-size:13px;font-weight:600;color:var(--green);margin:7px 0 9px}
#library-tools{margin:0;padding:3px 0;border:0;background:transparent}
#library-tools>summary{font-size:12px;font-weight:500;min-height:22px}
#library-tools[open]>summary{padding-bottom:8px;margin-bottom:8px}
.studio-tools{order:2;padding-block:7px}
#review{order:3}.visual{order:4;flex:none;height:390px;min-height:390px}
#sound-panel{flex:2;min-height:90px}#sound{min-height:58px}
#selection-hint{font-size:12px;margin:6px 0 0;color:var(--green)}
#phrase-tools{order:5;flex:none;border:0;border-top:1px solid var(--line);border-radius:0;background:#f8faf3;padding:12px 18px}
#phrase-tools summary{font-size:13px}#phrase-review h2{font-size:17px}
#phrase-editor{padding:12px;border:1px solid #d6cead;border-left:3px solid #ba9650;border-radius:7px;background:#fffef9}
#phrase-editor>label{margin-top:0}#phrase-reflection{min-height:76px;margin-top:6px}
#section-details{margin:10px 0;padding:8px 10px;background:transparent}#section-details summary{font-size:12px;font-weight:500}
#status{order:6}.privacy-note{order:7;border-radius:0 0 14px 14px}
.classroom{height:auto;min-height:100dvh;overflow:auto}
.classroom main{height:auto;min-height:calc(100dvh - 60px)}
.classroom .recording-studio{flex:initial;min-height:0}.classroom .visual{flex:none;height:420px;min-height:420px}
@media(max-width:599px){
 .transport{padding:9px 10px;gap:8px}.transport #demo{font-size:11px;padding:5px 6px;min-width:0}
 .transport .record-controls{gap:5px;flex:1;min-width:0}.record-controls button{flex:initial;min-width:0;padding:7px;font-size:12px}
 .record-controls #stop{font-size:11px}.record-controls #clock{font-size:17px;min-width:40px}
 #library{padding:10px}.first-recording{font-size:12px}#library>.recording-count{right:12px;top:11px}
 #library>.recording-tray .recording-card{flex-basis:205px}
 .visual{height:auto;min-height:410px}.visual #sound-panel{min-height:90px}.visual #sound{height:65px;min-height:65px}
 #phrase-tools{padding:10px}#phrase-editor{padding:10px}#phrase-review>.small{font-size:12px}
 .classroom .visual{height:auto;min-height:410px}.classroom #pitch{height:120px}.classroom #spectrogram{height:130px}.classroom #sound{height:65px}
}
@media(max-width:599px){
 .transport{flex-wrap:wrap}.transport #demo{font-size:10px;flex:1 0 82px;text-align:left;padding-inline:5px}
 .transport .record-controls{flex:0 0 auto}.record-controls button{white-space:nowrap}
 .record-controls #record{padding-inline:10px}.record-controls #stop{padding-inline:7px}
}

/* Comments stay above the mirror; opening them never expands/scrolls the page. */
.transport{justify-content:flex-end}.transport .record-controls{margin-left:auto}
#phrase-dialog{position:fixed;inset:0;margin:auto;width:min(540px,calc(100vw - 28px));max-height:calc(100dvh - 28px);overflow:auto;overscroll-behavior:contain;border:1px solid #b8c6ae;border-radius:16px;background:var(--paper);color:inherit;padding:20px;box-shadow:0 18px 70px #152d3040}
#phrase-dialog::backdrop{background:#26372d35}
.comment-open{overflow:hidden}
.comment-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.comment-heading h2{margin:0;font-size:20px}.comment-heading p{margin:4px 0 0;color:var(--muted);font-size:13px}
#phrase-dialog #phrase-editor{padding:0;border:0;background:none}
#phrase-dialog textarea{display:block;width:100%;resize:vertical}#phrase-dialog #phrase-reflection{min-height:110px}
#phrase-dialog .actions{gap:8px}#phrase-dialog .actions button{font-size:12px}
#phrase-dialog #phrase-remove{margin-left:auto;order:3}
#phrase-dialog #phrase-loop{margin-right:4px}#phrase-dialog .actions label{font-size:12px}
#phrase-dialog #section-details{margin-top:14px}#phrase-dialog #phrase-save-state{margin:12px 0 0;font-size:11px}
#phrase-save-state[data-error=true]{color:#9d3d24}
@media(max-width:599px){#phrase-dialog{padding:16px;width:calc(100vw - 20px);max-height:calc(100dvh - 20px)}.comment-heading h2{font-size:18px}.transport .record-controls{justify-content:flex-end;width:auto}}

html{scrollbar-gutter:stable}