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@media(min-width:1550px){main{padding-top:45px}.workspace{grid-template-columns:minmax(0,1fr) 320px}.lesson-hero{padding:30px 34px}}@media(max-width:1150px){.sidebar{width:210px;padding:26px 18px}.shell{margin-left:210px}main{padding:27px}.topbar{padding:0 27px}.workspace{grid-template-columns:minmax(0,1fr) 240px;gap:16px}.rail-card{padding:16px}h1{font-size:32px}.course-label{font-size:7px}.stat{padding:14px;gap:10px}}@media(max-width:950px){.workspace{grid-template-columns:1fr}.rail{display:grid;grid-template-columns:1fr 1fr;gap:15px}.rail-card{margin:0}.tip-card{grid-column:1/-1}.topbar>span{display:none}.topbar{justify-content:flex-end}.stat-icon{display:none}.streak{padding:9px}.streak .spark{display:none}.guide-grid{grid-template-columns:1fr}}@media(max-width:650px){.sidebar{position:static;width:100%;padding:15px 20px;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:24px}.brand-icon{height:34px;font-size:28px;width:33px;border-radius:8px}.brand-dot{margin-left:0}.course-label,.sidebar-plan,.sidebar-bottom{display:none}.main-nav{display:flex;margin-top:17px;gap:3px}.nav-item{padding:8px;font-size:10px;gap:6px}.nav-item span{font-size:16px}.shell{margin-left:0}.topbar{height:43px;padding:0 20px}.topbar>div{width:100%;justify-content:space-between}main{padding:23px 17px}h1{font-size:29px}.welcome{align-items:flex-start;gap:10px}.streak{font-size:9px;padding:8px}.streak strong{font-size:15px}.streak small{font-size:8px}.overview{gap:7px;margin-bottom:20px}.stat{padding:12px 9px}.stat strong{font-size:20px}.stat small{font-size:8px}.stat strong span{font-size:8px}.lesson-hero{padding:22px}.lesson-hero h2{font-size:26px}.panel{padding:18px}.tabs{gap:6px}.tab{padding:10px 8px}.tab small{font-size:8px}.rail{grid-template-columns:1fr}.tip-card{grid-column:auto}footer{padding:20px;font-size:9px}footer span{display:none}.save-state{width:100%;margin-left:0}.welcome .subtext{max-width:220px;font-size:11px}}
.lesson-column>.panel{margin-top:16px}.audio-box+.instruction{margin-top:10px}
@media(max-width:650px){.audio-box strong{flex:1 0 100%}.audio-box{gap:8px}.audio-box .button{padding:8px 11px}}
.wrapup{scroll-margin-top:22px}.wrapup .section-heading{margin-top:0;gap:10px}.wrapup .section-heading h3{margin-top:6px}.recap-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:22px}.recap-main{border-radius:10px;background:#f5f7ed;padding:16px 18px}.recap-main h4{margin:0 0 7px}.recap-main h4:not(:first-child){margin-top:18px}.recap-main p{font-size:12px;line-height:1.8;margin:0}.recap-main blockquote{margin:14px 0;padding-left:12px;border-left:3px solid #afc57a;font:italic 17px/1.8 Georgia,serif}.recap-personal h4{margin:0}.recap-personal ul{margin-top:8px}.recap-personal label{font-size:11px;display:block;margin-bottom:7px}.recap-personal small{font-size:10px;color:var(--muted)}.game-section{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}.game-welcome{display:flex;gap:22px;align-items:center;padding:22px;background:#f5f6ed;border-radius:12px}.game-welcome b{font-size:14px}.game-welcome p{font-size:12px;color:var(--muted);margin:7px 0 14px}.game-art{flex-shrink:0;display:grid;place-items:center;position:relative;width:85px;height:90px;background:var(--green);color:var(--lime);font:italic 36px Georgia;border-radius:13px;transform:rotate(-6deg)}.game-art span{position:absolute;right:-6px;top:-12px;font:30px Georgia;color:#90a74b}.game-step{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.game-progress{display:block;width:100%;height:5px;margin:9px 0 20px;accent-color:var(--green);border:0}.game-progress::-webkit-progress-bar{background:#e9eddf;border-radius:5px}.game-progress::-webkit-progress-value{background:var(--green);border-radius:5px}.game-word{font:34px Georgia,serif;margin-bottom:8px;overflow-wrap:anywhere}.game-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.game-option{border:1px solid var(--line);border-radius:9px;background:#fafbf6;text-align:left;padding:13px;color:var(--ink);font-size:13px;display:flex;gap:10px;align-items:center}.game-option span{border:1px solid #dce2d1;border-radius:5px;font-size:10px;padding:2px 7px}.game-option:hover:not(:disabled){border-color:#7e9768;background:#edf2df}.game-option:disabled{opacity:1}.game-option.correct{background:#e6efd1;border-color:#85a75b}.game-option.incorrect{background:#fbece3;border-color:#c39172}.game-answer{margin-top:14px;font-size:12px}.game-result{border-radius:11px;background:#f0f5df;padding:22px}.game-result h4{font:37px Georgia,serif;margin:12px 0}.game-result h4 span{font:14px system-ui;display:block;margin-top:8px}.game-result p{font-size:12px;line-height:1.9}.game-result .instruction{font-size:10px}.wrapup .badge{white-space:nowrap}
@media(max-width:650px){.recap-grid{grid-template-columns:1fr}.game-options{grid-template-columns:1fr}.game-welcome{padding:17px;gap:14px}.game-art{width:55px;height:65px;font-size:26px}.wrapup .section-heading{align-items:flex-start}.wrapup .section-heading h3{font-size:13px}.wrapup .eyebrow{font-size:8px}.wrapup .badge{font-size:9px}}

.learning-header{min-height:76px;padding:14px 32px;display:flex;align-items:center;justify-content:space-between;gap:18px;background:var(--green);color:white;border-bottom:1px solid #ffffff24}.learning-home{color:white;text-decoration:none;font-size:23px;font-weight:700;letter-spacing:-.7px}.learning-home span{display:inline-block;margin-left:14px;font-size:12px;font-weight:400;letter-spacing:0;color:#d0decf}.learning-header nav{display:flex;gap:8px}.learning-header nav a{color:#e4ecdc;text-decoration:none;padding:8px 17px;border-radius:8px;font-size:13px;white-space:nowrap}.learning-header nav a[aria-current=page]{background:var(--lime);color:var(--green);font-weight:650}.learning-header nav a:hover{box-shadow:inset 0 0 0 1px #d5e5b8}.sidebar{top:76px}.subject-piano .sidebar{display:none}.subject-piano .shell{margin-left:0}.subject-piano main{max-width:1050px}.subject-piano .level-pill{display:none}.piano-preview{padding:36px}.piano-preview h2{font:30px/1.4 Georgia,serif}.piano-preview p{max-width:600px;color:var(--muted)}.piano-art{display:flex;max-width:600px;height:150px;margin:30px 0;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--ink);padding:5px 5px 8px;gap:2px}.piano-key{flex:1;background:#fffff8;border-radius:0 0 4px 4px;position:relative}.piano-key.has-black:after{content:'';position:absolute;right:-35%;top:0;width:65%;height:62%;background:#213c36;border-radius:0 0 3px 3px;z-index:1}#voice{max-width:250px;min-width:0}.audio-box strong{flex-basis:100%}
@media(max-width:650px){.learning-header{padding:12px 18px;flex-wrap:wrap;gap:10px}.learning-home{font-size:21px}.learning-home span{font-size:10px;margin-left:10px}.learning-header nav{width:100%}.learning-header nav a{flex:1;text-align:center;padding:7px 12px}.sidebar{top:auto}.piano-preview{padding:22px}.piano-preview h2{font-size:25px}.piano-art{height:115px}#voice{max-width:calc(100% - 70px)}}

.piano-studio{padding:28px;min-width:0}.piano-controls{display:flex;gap:10px;flex-wrap:wrap}.piano-settings{display:grid;grid-template-columns:minmax(0,2fr) minmax(150px,1fr);gap:24px;margin:24px 0 12px}.piano-settings label{font-size:12px;font-weight:600;min-width:0}.piano-settings select{display:block;width:100%;margin-top:7px;font-weight:400}.piano-settings input{display:block;width:100%;margin-top:16px;accent-color:var(--green)}.piano-settings output{float:right;font-weight:400}#piano-status{font-size:13px;min-height:24px;overflow-wrap:anywhere}.piano-indicators{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:11px}.piano-indicators span{padding:4px 9px;background:#f0f3e8;border-radius:5px}.piano-now{display:flex;align-items:center;gap:15px;margin:26px 0 14px;flex-wrap:wrap}.piano-now>span{font-size:9px;letter-spacing:1.4px;color:var(--muted)}.piano-now strong{font-size:19px;min-width:150px}.piano-now button{margin-left:auto}.piano-now button[aria-pressed=true]{background:var(--lime)}.piano-keyboard-scroll{overflow-x:auto;max-width:100%;padding:12px 0 16px;overscroll-behavior-x:contain}.piano-keyboard{position:relative;width:1976px;height:204px;background:var(--ink);border-radius:6px}.piano-note{position:absolute;top:0;display:flex;align-items:flex-end;justify-content:center;border-radius:0 0 5px 5px;touch-action:pan-x;user-select:none;-webkit-user-select:none;outline-offset:-4px}.piano-note.white{width:38px;height:200px;background:#fffff7;border:1px solid #bdc7b8;color:#6b7968;z-index:1}.piano-note.black{width:24px;height:126px;background:linear-gradient(#253a33,#17271f);border:1px solid #0e2116;color:#c5d2c0;z-index:2}.piano-note span{font-size:9px;margin-bottom:12px;pointer-events:none}.piano-note.black span{font-size:8px}.piano-note.white.pressed{background:#d2e78e;box-shadow:inset 0 4px 12px #64783d44}.piano-note.black.pressed{background:#78973e}.piano-note:focus-visible{outline:3px solid #d7a34c;z-index:3}.piano-help{margin-top:22px}.piano-help li,.piano-help p{font-size:13px;color:var(--muted)}.piano-help li{margin:8px 0}
@media(max-width:650px){.piano-studio{padding:18px}.piano-settings{grid-template-columns:1fr;gap:14px}.piano-controls .button{padding:9px 11px;font-size:11px}.piano-now{gap:9px}.piano-now strong{font-size:16px;min-width:0}.piano-now button{margin-left:0}.piano-help ol{padding-left:20px}.piano-indicators{gap:5px}}

.piano-correction{margin-top:20px;padding:14px 16px;border:1px solid var(--line);border-radius:9px;background:#f7f9ef}.piano-correction summary{margin:0;font-size:12px;font-weight:600}.piano-correction label{display:block;font-size:12px;margin-top:12px}.piano-correction-toggle{display:flex!important;align-items:center;gap:8px}.piano-correction input{accent-color:var(--green)}.piano-correction input[type=range]{display:block;width:100%;max-width:360px;margin-top:8px}.piano-correction output{font-weight:650;margin-left:10px}.piano-correction p{font-size:11px;color:var(--muted);max-width:670px;margin-bottom:0}

#piano-course{margin-bottom:24px}.piano-course-panel{padding:26px}.piano-course-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.piano-course-head h2{font:27px/1.35 Georgia,serif;margin:8px 0}.piano-course-head label{font-size:11px;min-width:210px}.piano-course-head select{display:block;width:100%;margin-top:6px}.piano-course-summary{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:11px;color:var(--muted);margin:15px 0 10px}#piano-course-progress{width:100%;height:7px;accent-color:var(--green);display:block;margin-bottom:25px}.piano-course-layout{display:grid;grid-template-columns:215px minmax(0,1fr);gap:25px}.piano-roadmap{max-height:760px;overflow:auto;padding-right:10px}.piano-phase{margin-bottom:18px}.piano-phase h3{font-size:11px;margin:0 0 8px;color:var(--muted)}.piano-phase button{width:100%;display:flex;align-items:baseline;gap:9px;text-align:left;padding:9px 8px;border:1px solid transparent;background:transparent;color:var(--ink);border-radius:7px;font-size:11px}.piano-phase button b{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}.piano-phase button:hover{background:#f0f4e7}.piano-phase button[aria-current=step]{background:#edf3dc;border-color:#c2d496}.piano-phase button.finished b:after{content:' ✓';color:var(--green)}.piano-lesson>h3{font:25px/1.4 Georgia,serif;margin:8px 0}.piano-lesson>p{font-size:13px}.piano-session-plan{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:18px 0;font-size:10px}.piano-session-plan span{padding:7px 9px;background:#f4f6ec;border-radius:6px}.piano-session-plan b{color:var(--green);margin-right:5px}.piano-theory{padding:13px;background:#fafbf6;border:1px solid var(--line);border-radius:8px;margin-bottom:18px}.piano-theory summary{margin:0;font-weight:650}.piano-theory li,.piano-theory p{font-size:12px;color:#64725e}.piano-theory ul{padding-left:18px}.piano-exercise-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.piano-exercise-tabs .button{font-size:11px;padding:9px 11px}.piano-exercise-info{display:flex;flex-direction:column;font-size:13px}.piano-exercise-info span{font-size:10px;color:var(--muted);margin:4px 0 7px}.piano-tempo{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin:16px 0 9px}.piano-tempo label{font-size:10px}.piano-tempo input{display:block;width:180px;accent-color:var(--green);margin-top:7px}.piano-tempo output{margin-left:8px;font-weight:650}.piano-tempo select{display:block;padding:3px 8px;margin-top:4px}.piano-step-list{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.piano-step-list>span{display:flex;flex-direction:column;border:1px solid var(--line);background:#fafbf5;border-radius:7px;padding:8px 10px;min-width:74px}.piano-step-list small{font-size:8px;color:var(--muted)}.piano-step-list b{font-size:12px}.piano-step-list em{font-size:9px;font-style:normal;color:var(--muted)}.piano-step-list .current{border:2px solid #70904b;background:#e9f1d2;padding:7px 9px}.piano-step-list .passed{background:#f0f6e5}.piano-practice-actions{display:flex;flex-wrap:wrap;gap:8px}.piano-practice-actions .button{font-size:11px;padding:8px 11px}#piano-practice-status{font-size:12px;color:var(--green);min-height:24px;margin:13px 0 7px}#piano-practice-count,#piano-course-save-state{font-size:10px;color:var(--muted)}.piano-lesson-checklist{margin-top:24px;border-top:1px solid var(--line);padding-top:12px}.piano-lesson-checklist h4{font-size:13px;margin:6px 0 12px}.piano-lesson-checklist label{font-size:11px;display:block;margin:9px 0}.piano-lesson-checklist input{accent-color:var(--green);vertical-align:middle}.piano-lesson-checklist label[for=piano-lesson-notes]{margin-top:16px}.piano-profile{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:20px 0 -8px;font-size:11px}.piano-profile>span{font-weight:650;margin-right:auto}.piano-profile label{color:var(--muted)}.piano-profile select{font-size:11px}.piano-live-cue{font-size:12px;background:#edf3dd;color:var(--green);padding:12px;border-radius:7px;margin:14px 0 6px}.piano-note.white.expected{box-shadow:inset 0 -7px #d5aa52}.piano-note.black.expected{box-shadow:inset 0 -7px #f4cb7f}.piano-studio{scroll-margin-top:18px}
@media(max-width:850px){.piano-course-layout{grid-template-columns:170px minmax(0,1fr);gap:16px}.piano-course-head{flex-direction:column}.piano-course-head label{width:100%}.piano-course-panel{padding:20px}}
@media(max-width:650px){.piano-course-layout{grid-template-columns:1fr}.piano-roadmap{max-height:200px;padding:8px;border:1px solid var(--line);border-radius:8px}.piano-phase{margin-bottom:10px}.piano-phase button{padding:7px}.piano-course-panel{padding:17px}.piano-course-head h2{font-size:24px}.piano-course-summary{font-size:10px}.piano-lesson>h3{font-size:23px}.piano-session-plan{grid-template-columns:1fr}.piano-practice-actions .button{font-size:10px}.piano-step-list>span{min-width:65px;padding:7px}.piano-step-list b{font-size:11px}.piano-tempo input{width:150px}.piano-profile{font-size:10px}}

.piano-course-types{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:25px}.piano-course-types button{text-align:left;padding:17px;border:1px solid var(--line);border-radius:10px;background:#fafbf6;color:var(--ink)}.piano-course-types strong{display:block;font:23px/1.3 Georgia,serif}.piano-course-types span{display:block;font-size:11px;margin:7px 0;color:var(--muted)}.piano-course-types small{font-size:10px;color:var(--muted)}.piano-course-types button[aria-pressed=true]{background:#edf3da;border-color:#8faa68;box-shadow:inset 0 0 0 1px #8faa68}.piano-course-types button:hover{border-color:#8faa68}@media(max-width:650px){.piano-course-types{gap:8px}.piano-course-types button{padding:12px}.piano-course-types strong{font-size:20px}.piano-course-types span{font-size:10px}}

/* Piano uses the viewport as a workspace: navigation, lesson, and instrument. */
.subject-piano{overflow:hidden}.subject-piano .learning-header{height:76px;position:relative;z-index:5}.subject-piano .topbar,.subject-piano footer{display:none}.subject-piano main{max-width:none;margin:0;padding:0}.subject-piano #piano-course{margin:0}
.piano-toolbar{height:60px;padding:10px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff;border-bottom:1px solid var(--line)}.piano-toolbar-title{display:flex;align-items:baseline;gap:14px;white-space:nowrap}.piano-toolbar-title strong{font-size:17px}.piano-toolbar-title>span{font-size:11px;color:var(--muted)}.piano-toolbar-actions{display:flex;align-items:center;gap:9px;min-width:0}.piano-toolbar-actions .button{font-size:11px;padding:8px 12px;white-space:nowrap}#piano-device{min-width:0}#piano-connection-summary{max-width:310px;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.piano-device-dot{width:7px;height:7px;background:#ba9867;border-radius:50%;flex-shrink:0}.connected .piano-device-dot{background:#689641}
.piano-course-panel{display:grid;grid-template-columns:260px minmax(0,1fr);gap:0;border:0;border-radius:0;padding:0;background:transparent;min-height:0}.piano-course-sidebar{height:calc(100dvh - 136px);padding:23px 17px 15px;display:grid;grid-template-rows:auto auto auto auto auto minmax(0,1fr);gap:13px;min-width:0;overflow:hidden;background:#fff;border-right:1px solid var(--line)}.piano-sidebar-heading{font-size:9px;color:var(--muted);font-weight:650;letter-spacing:1.5px;display:flex;align-items:center;justify-content:space-between;gap:9px}#piano-lessons-toggle{display:none}.piano-course-sidebar .piano-course-types{gap:6px;margin:0}.piano-course-sidebar .piano-course-types button{padding:10px 8px;border-radius:7px}.piano-course-sidebar .piano-course-types strong{font:600 13px/1.4 system-ui}.piano-course-sidebar .piano-course-types span,.piano-course-sidebar .piano-course-types small{display:none}.piano-course-sidebar>label{font-size:10px;color:var(--muted)}.piano-course-sidebar>label select{display:block;margin-top:6px;width:100%;font-size:11px}.piano-course-sidebar .piano-course-summary{margin:0;font-size:10px;gap:7px}.piano-course-sidebar .piano-course-summary>span:last-child{display:none}.piano-course-sidebar #piano-course-progress{margin:0;height:6px}.piano-course-sidebar .piano-roadmap{max-height:none;min-height:0;padding-right:6px;overflow:auto;scrollbar-width:thin}.piano-course-sidebar .piano-phase{margin-bottom:19px}.piano-course-sidebar .piano-phase h3{font-size:10px;margin:0 0 6px}.piano-course-sidebar .piano-phase button{font-size:11px;padding:9px 7px;line-height:1.5}.piano-course-sidebar .piano-phase button b{min-width:22px;flex-shrink:0}
.piano-course-content{height:calc(100dvh - 136px);padding:20px 26px 0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:15px;min-width:0;overflow:hidden}.piano-course-content>.piano-course-head{display:block}.piano-course-content .piano-course-head .eyebrow{font-size:9px}.piano-course-content .piano-course-head h2{font-size:23px;margin:4px 0 0}.piano-course-content .piano-course-head .instruction{display:none}.piano-course-content>.piano-lesson{min-height:0;overflow:auto;padding:0 15px 24px 0;scrollbar-width:thin;scrollbar-gutter:stable}.piano-course-content .piano-session-plan{grid-template-columns:repeat(4,minmax(0,1fr));margin:15px 0}.piano-course-content .piano-lesson>h3{font-size:24px}.piano-course-content .piano-theory{max-width:none}.piano-course-content>.piano-studio{margin:0;padding:10px 15px;border-radius:10px 10px 0 0;min-width:0}.piano-studio-head{display:flex;align-items:center;gap:18px;min-width:0}.piano-studio-head .piano-now{margin:0;flex:1;min-width:0;gap:9px}.piano-studio-head .piano-now strong{font-size:13px;min-width:0;overflow-wrap:anywhere}.piano-studio-head .piano-now>span{font-size:8px;white-space:nowrap}.piano-studio-volume{display:flex;align-items:center;gap:8px;font-size:9px;white-space:nowrap}.piano-studio-volume input{width:95px;accent-color:var(--green)}.piano-studio-head>.button{font-size:10px}.piano-course-content .piano-live-cue{font-size:11px;padding:8px 10px;margin:8px 0 2px}.piano-course-content .piano-keyboard-scroll{padding:5px 0 8px}.piano-course-content .piano-keyboard{height:132px}.piano-course-content .piano-note.white{height:128px}.piano-course-content .piano-note.black{height:82px}.piano-course-content .piano-note span{margin-bottom:7px}.piano-instrument-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:9px;color:var(--muted)}.piano-instrument-footer .piano-indicators{font-size:9px}.piano-instrument-footer .piano-indicators span{padding:0;background:transparent}
.piano-connection-dialog{width:min(560px,calc(100vw - 32px));max-height:calc(100dvh - 32px);padding:27px;border:1px solid #dce4d2;border-radius:16px;background:var(--paper);color:var(--ink);box-shadow:0 20px 100px #102d2644;overflow:auto}.piano-connection-dialog::backdrop{background:#132c2788;backdrop-filter:blur(3px)}.piano-modal-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.piano-modal-heading h2{font:29px/1.3 Georgia,serif;margin:7px 0}.piano-modal-heading .eyebrow{font-size:8px}.piano-connection-dialog>p{font-size:12px;color:var(--muted)}.piano-modal-input{font-size:11px;display:block;margin-top:20px}.piano-modal-input select{display:block;width:100%;margin-top:7px}.piano-modal-actions{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0 18px}.piano-device-settings{border-top:1px solid var(--line);padding-top:15px}.piano-device-settings summary{margin:0}.piano-device-settings .piano-profile{margin:15px 0}.piano-connection-dialog #piano-status{font-size:12px;min-height:20px}.piano-connection-dialog .piano-correction{padding:10px 13px;margin-top:10px}
@media(min-width:901px) and (max-height:740px){.piano-course-content{padding-top:12px;gap:10px}.piano-course-content .piano-keyboard{height:104px}.piano-course-content .piano-note.white{height:100px}.piano-course-content .piano-note.black{height:65px}.piano-course-content .piano-live-cue{padding:6px;margin-top:5px}}
@media(max-width:1100px){.piano-toolbar-title>span{display:none}.piano-course-panel{grid-template-columns:225px minmax(0,1fr)}.piano-course-content{padding-left:18px;padding-right:18px}.piano-course-content .piano-session-plan{grid-template-columns:1fr 1fr}.piano-studio-volume input{width:75px}#piano-connection-summary{max-width:230px}}
@media(max-width:750px){.subject-piano{overflow:auto}.subject-piano .learning-header{height:auto;position:static}.piano-toolbar{height:auto;min-height:60px;padding:12px 17px;flex-wrap:wrap;gap:8px}.piano-toolbar-title{font-size:15px}.piano-toolbar-actions{flex-wrap:wrap;gap:6px;width:100%}.piano-toolbar-actions .button{font-size:10px;padding:7px 9px}#piano-connection-summary{max-width:185px}.piano-course-panel{display:block}.piano-course-sidebar{height:auto;display:block;padding:15px 17px;border-right:0;border-bottom:1px solid var(--line)}.piano-sidebar-heading{margin-bottom:12px}#piano-lessons-toggle{display:inline-flex;font-size:10px;letter-spacing:0}.piano-course-sidebar .piano-course-types{margin-bottom:12px}.piano-course-sidebar>label{display:block}.piano-course-sidebar .piano-course-summary{margin:10px 0}.piano-course-sidebar .piano-roadmap{display:none}.piano-course-sidebar.is-open .piano-roadmap{display:block;max-height:260px;margin-top:14px}.piano-course-content{height:auto;display:flex;flex-direction:column;overflow:visible;padding:20px 17px 0;gap:18px}.piano-course-content>.piano-lesson{overflow:visible;scrollbar-gutter:auto;padding:0}.piano-course-content>.piano-studio{padding:12px}.piano-studio-head{flex-wrap:wrap;gap:8px}.piano-studio-head .piano-now{flex-basis:100%}.piano-studio-volume{margin-right:auto}.piano-instrument-footer{font-size:8px}.piano-modal-heading h2{font-size:25px}.piano-connection-dialog{padding:20px}.piano-course-content .piano-session-plan{grid-template-columns:1fr 1fr}.piano-course-content .piano-keyboard{height:156px}.piano-course-content .piano-note.white{height:152px}.piano-course-content .piano-note.black{height:99px}}

/* Vocal workspace */
.subject-vocal .sidebar,.subject-vocal .topbar,.subject-vocal footer{display:none}.subject-vocal .shell{margin-left:0}.subject-vocal main{max-width:none;margin:0;padding:0}.v-layout{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:calc(100vh - 76px)}.v-sidebar{padding:25px 20px;border-right:1px solid var(--line);background:#f0f2e8;position:sticky;top:0;height:calc(100vh - 76px);overflow:auto}.v-sidebar h2{font-size:23px}.v-sidebar label{display:block}.v-sidebar select{width:100%;margin:8px 0}.v-sidebar small{display:block;margin:20px 0;color:var(--muted)}.v-lesson{display:block;text-align:left;width:100%;padding:10px;border:0;border-radius:7px;background:transparent;color:var(--green);cursor:pointer}.v-lesson:hover,.v-lesson.active{background:var(--lime)}.v-workspace{max-width:none;width:100%;padding:28px;min-width:0}.v-workspace .panel{margin-bottom:24px}.v-workspace h1{font-size:30px;line-height:1.3}.v-workspace ol{line-height:1.9;padding-left:22px}.v-controls,.v-buttons{display:flex;gap:14px;align-items:end;flex-wrap:wrap;margin:18px 0}.v-controls label{display:flex;flex-direction:column;gap:7px;font-size:13px;max-width:100%;min-width:0}.v-controls select{max-width:100%;padding:9px;border:1px solid var(--line);border-radius:6px;background:#fff}.v-notes{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.v-note{padding:9px 12px;background:#eef1e7;border-radius:7px}.v-note.current{background:var(--lime);outline:2px solid var(--green)}.v-note.passed{background:#cbe8d0}#v-meter{display:block;width:100%;height:25px;margin:12px 0}#v-feedback{min-height:3em;font-weight:600}#v-status{color:var(--green)}@media(max-width:750px){.learning-header{flex-wrap:wrap;padding:14px 17px}.learning-header nav{flex-wrap:wrap}.v-layout{display:block}.v-sidebar{position:static;height:auto;padding:18px}.v-sidebar nav{max-height:180px;overflow:auto}.v-workspace{padding:15px}.v-workspace h1{font-size:24px}.v-workspace .panel{padding:20px}.v-controls{align-items:stretch}.v-controls label{width:100%}.v-note{font-size:12px}}
.v-note.missed{background:#f6d5cb;text-decoration:underline wavy #ad4a27}
.v-device-settings{margin-bottom:20px}.v-device-settings>summary{display:list-item;list-style-position:inside;cursor:pointer;width:fit-content;max-width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 15px;color:var(--green);font-size:13px;font-weight:600;background:#f0f2e8}.v-device-settings>summary:focus-visible{outline:2px solid var(--green);outline-offset:3px}.v-device-settings[open]>summary{margin-bottom:15px}.v-device-settings .panel{margin:0}.v-live-monitor{background:#f4f6ee;border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:18px 0}.v-live-monitor #v-meter{margin:7px 0}.v-live-monitor #v-level{font-size:12px;color:var(--muted)}
.music-score{min-width:0;margin:20px 0;border:1px solid var(--line);border-radius:12px;background:#fffdf6;overflow:hidden}.music-score-hint{padding:12px 16px;margin:0;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}.music-score-scroll{overflow-x:auto;max-width:100%;scrollbar-width:thin}.music-score svg{display:block;min-width:100%}.score-bg{fill:#fffdf6}.score-line{stroke:#b7beb2;stroke-width:1}.score-ledger,.score-stem{stroke:currentColor;stroke-width:1.5}.score-step{color:#244e46;transition:color .15s}.score-head{fill:currentColor;stroke:currentColor;stroke-width:1.6}.score-open{fill:#fffdf6}.score-flag{fill:none;stroke:currentColor;stroke-width:2}.score-clef{font-family:'Noto Music','DejaVu Sans',serif;font-size:57px;fill:#31574b}.score-meter{font:bold 20px Georgia,serif;fill:#31574b}.score-rest{font:32px serif;fill:currentColor;text-anchor:middle}.score-accidental{font:21px serif;fill:currentColor}.score-natural{font:15px serif;fill:#7e8b7b}.score-note-label{font:11px sans-serif;text-anchor:middle;fill:currentColor}.score-lyric{font:bold 16px sans-serif;text-anchor:middle;fill:currentColor}.score-duration{font:10px sans-serif;text-anchor:middle;fill:#82907e}.score-cursor{fill:#c78829;opacity:.6;pointer-events:none}.score-step.is-current{color:#c3730e}.score-step.is-current .score-head{stroke-width:3}.score-step.is-passed{color:#24835b}.score-step.is-missed{color:#b04c3b}.score-live-pitch{fill:#3989b5;stroke:#fff;stroke-width:2}.score-step-details{margin:12px 0}.score-step-details>summary{cursor:pointer;font-size:12px;color:var(--muted)}.v-notes{display:none}.piano-course-content .music-score{margin:14px 0}.piano-course-content .music-score svg{height:340px}@media(max-width:750px){.music-score-hint{font-size:11px}.music-score svg{min-width:580px}}
.v-repeat-gap{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted)}.v-repeat-gap select{padding:8px;border:1px solid var(--line);border-radius:6px;background:white}.v-buttons{align-items:end}#v-repeat[aria-pressed=true]{background:var(--lime);color:var(--green)}#v-repeat-status{font-size:13px;color:var(--green);min-height:1.5em}
.piano-workspace-tabs{display:flex;gap:5px;margin:0 auto 0 20px}.piano-workspace-tabs button{padding:9px 12px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--green);cursor:pointer;font-weight:600;font-size:12px}.piano-workspace-tabs button[aria-pressed=true]{background:var(--lime);border-color:#9aaf66}.pl-sidebar{height:calc(100dvh - 136px);overflow:auto;padding:23px 17px;background:white;border-right:1px solid var(--line);min-width:0}.pl-sidebar h2{font-size:20px}.pl-sidebar p,.pl-sidebar>small{font-size:11px;color:var(--muted)}.pl-sidebar label{display:block;font-size:11px;margin:14px 0}.pl-sidebar select,.pl-sidebar input{display:block;width:100%;margin-top:6px;padding:8px;border:1px solid var(--line);border-radius:6px;min-width:0}.pl-sidebar nav button{display:block;width:100%;text-align:left;padding:12px 9px;margin:5px 0;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--green);cursor:pointer}.pl-sidebar nav strong{font-size:12px;display:block}.pl-sidebar nav small{display:block;font-size:10px;margin-top:5px;color:var(--muted)}.pl-sidebar nav button[aria-current=true]{background:var(--lime);border-color:#a0b46a}.pl-controls{display:flex;flex-wrap:wrap;gap:15px;align-items:end;margin:18px 0}.pl-controls label{display:flex;flex-direction:column;gap:6px;max-width:100%;font-size:12px;min-width:0}.pl-controls select,.pl-controls input[type=number]{padding:7px;border:1px solid var(--line);border-radius:6px;max-width:100%}.pl-controls input[type=number]{width:95px}.pl-controls .pl-loop-label{flex-direction:row;align-items:center;padding:9px}.pl-source{display:flex;flex-wrap:wrap;gap:18px;font-size:12px}.pl-position{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:12px}.pl-position label{display:flex;align-items:center;gap:10px}.pl-workspace #pl-score{max-width:100%;min-width:0}.pl-workspace #pl-status{min-height:3em}.pl-sidebar>small{display:block;margin-top:20px}.piano-toolbar-title>span{display:none}@media(max-width:1100px){.piano-workspace-tabs{margin-left:10px}.piano-workspace-tabs button{font-size:10px;padding:8px}.piano-toolbar-actions .button{font-size:10px}}@media(max-width:750px){.piano-workspace-tabs{margin:0}.pl-sidebar{height:auto;padding:17px}.pl-sidebar nav{max-height:220px;overflow:auto}.pl-controls label{width:100%}.pl-controls .pl-loop-label{width:auto}.pl-position label{max-width:100%}}
.pl-score-row{min-width:0;margin:0 0 10px;border:1px solid var(--line);border-radius:10px;background:#fffdf6;overflow:hidden;overflow-anchor:none}.pl-score-row .music-score{margin:0;border:0;border-radius:0}.pl-score-row .music-score-hint{display:none}.pl-row-caption{padding:7px 14px;font-size:11px;color:var(--muted);background:#eef1e7}.pl-row-current>.pl-row-caption{color:var(--green);background:#e2edbe;font-weight:600}.pl-workspace .pl-score-row svg{height:260px}#pl-score{overflow-anchor:none}
.v-workspace-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0}.v-workspace-tabs button{padding:9px;border:1px solid var(--line);border-radius:7px;background:white;color:var(--green);cursor:pointer;font-size:11px;font-weight:600}.v-workspace-tabs button[aria-pressed=true]{background:var(--lime);border-color:#a0b46a}.v-sidebar [hidden],.v-workspace [hidden]{display:none!important}.v-sidebar input[type=search]{padding:9px;border:1px solid var(--line);border-radius:6px;width:100%;margin-top:7px}.v-lesson small{display:block;margin:5px 0 0;font-size:10px}.v-controls input[type=number]{width:90px;padding:8px;border:1px solid var(--line);border-radius:6px}.v-controls #v-free-range{flex-basis:100%;font-size:12px;color:var(--muted)}.rolling-score .music-score{margin:0;border:0}.rolling-score .music-score-hint{display:none}.rolling-score .pl-score-row svg{height:245px}#v-source a{display:inline-block;margin:8px 6px 0 0}

.subject-guitar .sidebar,.subject-guitar .topbar,.subject-guitar footer{display:none}.subject-guitar .shell{margin-left:0}.subject-guitar main{max-width:none;margin:0;padding:32px}.guitar-placeholder{min-height:310px;padding:40px}.guitar-placeholder .badge{display:inline-block;margin:18px 0 6px}.guitar-placeholder h1{font-size:36px;margin:12px 0}.guitar-placeholder .button{display:inline-block;margin-top:20px;text-decoration:none}@media(max-width:750px){.subject-guitar main{padding:17px}.guitar-placeholder{padding:24px}.learning-header nav a{padding:8px 11px}}
.account-menu{display:flex;align-items:center;gap:12px;font-size:12px;white-space:nowrap}.learning-header nav{margin-left:auto}.account-menu .button{padding:7px 10px;background:#ffffff12;color:white;border-color:#ffffff55}.login-page{min-height:100vh;background:#f4f6ed;margin:0}.login-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(330px,.9fr);min-height:100vh;max-width:none;margin:0;padding:0}.login-intro{background:var(--green);color:white;padding:clamp(30px,7vw,100px);display:flex;flex-direction:column;justify-content:center;align-items:start}.login-intro .learning-home{font-size:32px;margin-bottom:65px}.login-intro .eyebrow{color:#cedbb5}.login-intro h1{font:clamp(32px,4vw,54px)/1.22 Georgia,serif;letter-spacing:-1px}.login-intro p{color:#d6e3cd;line-height:1.8}.login-subjects{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.login-subjects span{padding:9px 13px;border:1px solid #ffffff36;border-radius:20px;font-size:12px}.login-card{align-self:center;justify-self:center;width:min(440px,calc(100% - 50px));padding:42px;background:white;border:1px solid var(--line);border-radius:18px;box-shadow:0 16px 60px #154e4608}.login-card h2{font:30px/1.3 Georgia,serif;color:var(--green);margin:14px 0}.login-card p,.login-card small{font-size:13px;line-height:1.7;color:var(--muted)}.login-card form{margin-top:25px}.login-card label{display:block;margin:18px 0 8px;color:var(--green);font-size:13px}.login-card input{display:block;width:100%;padding:13px;border:1px solid var(--line);border-radius:8px;background:#fafbf7;font:inherit}.login-card input:focus{outline:2px solid #c6d992;outline-offset:2px}.login-card .button{width:100%;margin-top:25px;padding:13px}.login-card #login-error{color:#a33c2d;min-height:24px}.login-card small{display:block;border-top:1px solid var(--line);padding-top:18px}@media(max-width:800px){.login-layout{grid-template-columns:1fr}.login-intro{padding:30px}.login-intro .learning-home{margin-bottom:25px}.login-intro h1{font-size:32px;margin:14px 0}.login-subjects{display:none}.login-card{margin:28px auto;width:calc(100% - 34px);padding:26px;max-width:440px}.learning-header{flex-wrap:wrap}.learning-header nav{margin-left:0}.account-menu{margin-left:auto}}.learning-header{gap:12px}

/* Shared Phong identity: header, navigation and sign-in. */
.phong-brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;letter-spacing:0;flex-shrink:0}.phong-logo{display:block;width:44px;height:44px;flex-shrink:0}.phong-brand .phong-brand-copy{display:flex;flex-direction:column;gap:1px;margin:0;color:inherit;line-height:1.15;font-size:inherit;font-weight:inherit;letter-spacing:0}.phong-brand-copy small{font-size:11px;font-weight:500;letter-spacing:.3px;opacity:.8}.phong-brand-copy strong{font-size:25px;font-weight:750;letter-spacing:-.6px}.sidebar .phong-brand{color:var(--green)}.sidebar .phong-brand-copy small{font-size:10px}.login-intro .phong-logo{width:64px;height:64px}.login-intro .phong-brand-copy small{font-size:14px}.login-intro .phong-brand-copy strong{font-size:36px}@media(max-width:800px){.learning-header .phong-logo{width:38px;height:38px}.learning-header .phong-brand-copy strong{font-size:22px}.learning-header .phong-brand-copy small{font-size:10px}}

.ef-workspaces{display:flex;gap:9px;flex-wrap:wrap;margin:0 0 25px}.ef-workspaces [aria-pressed=true]{background:var(--green);color:white}.ef-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:24px;align-items:start}.ef-list{position:sticky;top:20px;padding:20px}.ef-list label{display:block;font-weight:600;margin-bottom:9px}.ef-list select{width:100%;padding:9px;border:1px solid var(--line);border-radius:7px}.ef-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin:20px 0}.ef-grid button{padding:7px 0;border:1px solid var(--line);border-radius:7px;background:#f7f8f2;color:var(--green);font-size:14px}.ef-grid button.active{background:var(--lime);outline:2px solid var(--green)}.ef-content{min-width:0}.ef-content>.panel{margin-bottom:24px}.ef-content .panel h3{margin-top:23px}.ef-symbol{display:flex;align-items:center;gap:22px;font-size:54px;margin:15px 0;color:var(--green)}.ef-symbol>span{font-size:26px}.ef-symbol small{display:block;font-size:14px;font-weight:400;color:var(--muted)}.ef-mouth{display:block;width:100%;max-width:620px;margin:20px auto}.ef-contrast{display:grid;grid-template-columns:1fr 1fr;gap:15px}.ef-contrast>div{display:flex;flex-direction:column;align-items:start;gap:10px;padding:17px;background:#f4f6ed;border-radius:10px}.ef-contrast small{color:var(--muted)}.ef-reference{font-size:25px;color:var(--green);padding:20px;background:#f4f6ed;border-radius:10px}.ef-question{margin:20px 0;padding:16px;border:1px solid var(--line);border-radius:9px}.ef-question legend{font-weight:600}.ef-question label{display:block;margin:9px 0}.ef-question button{margin-top:12px}.ef-checks{display:grid;gap:10px;margin:18px 0}.ef-content textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:13px;resize:vertical}.ef-content audio{display:block;width:100%;margin:15px 0}.ef-content audio[hidden]{display:none}.ef-practice>small{display:block;color:var(--muted);line-height:1.7}.ef-result{padding:20px;background:#fbf2e5;border:1px solid #e8d9bb;border-radius:12px;margin:18px 0}.ef-pass{background:#eef5da;border-color:#c6d992}.ef-metrics{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px}.ef-metrics span{font-size:12px}.ef-word{display:block;margin:12px 0}.ef-word>span{display:flex;flex-wrap:wrap;gap:6px;margin-top:5px}.ef-phone{font-size:13px;background:#edf2e5;padding:5px 9px;border-radius:6px}.ef-phone.ef-low{background:#f4d9c7;color:#743a23}.ef-content #ef-status{font-size:13px;color:var(--green)}@media(max-width:1000px){.ef-layout{grid-template-columns:1fr}.ef-list{position:static}.ef-grid{grid-template-columns:repeat(auto-fit,minmax(36px,1fr))}.ef-content>.panel{padding:22px}}@media(max-width:500px){.ef-contrast{grid-template-columns:1fr}.ef-symbol{font-size:42px}.ef-symbol>span{font-size:21px}.ef-workspaces .button{padding:9px;font-size:12px}.ef-content .actions{flex-wrap:wrap}.ef-content .actions button{max-width:100%}}
.ef-focus{padding:16px 20px;border-left:3px solid #a4bb68;background:#f4f6ed;border-radius:0 9px 9px 0}.ef-focus p{margin:6px 0}.ef-list #ef-count{font-weight:600;color:var(--green)}
#account-create[hidden]{display:none!important}#create-user-dialog{width:min(520px,calc(100% - 30px));max-height:calc(100dvh - 40px);overflow:auto;border:1px solid var(--line);border-radius:18px;padding:28px;color:var(--ink);background:white;box-shadow:0 24px 100px #0003}#create-user-dialog::backdrop{background:#102d2677;backdrop-filter:blur(3px)}.create-user-heading{display:flex;align-items:start;justify-content:space-between;gap:12px}.create-user-heading h2{font:28px/1.3 Georgia,serif;margin:9px 0}.create-user-heading>button{background:transparent;border:0;font-size:20px;padding:2px 8px;color:var(--green)}#create-user-dialog p{font-size:13px;line-height:1.6}#create-user-dialog label{display:block;font-weight:600;font-size:13px;margin:17px 0 7px}#create-user-dialog input{width:100%;padding:11px;border:1px solid var(--line);border-radius:8px;font:inherit}#create-user-dialog small{display:block;color:var(--muted);font-size:11px;margin-top:6px}#username-availability{min-height:22px;color:var(--green);margin:7px 0}#create-user-error{color:#a33c2d}#create-user-success{color:var(--green);font-weight:600}#create-user-dialog .actions{flex-wrap:wrap}

.subject-statistics .sidebar,.subject-statistics .topbar,.subject-statistics footer{display:none}.subject-statistics .shell{margin-left:0}.subject-statistics main{max-width:none;margin:0;padding:0}.learning-header nav{flex-wrap:wrap}.st-layout{display:grid;grid-template-columns:270px minmax(0,1fr);min-height:calc(100vh - 76px)}.st-sidebar{padding:28px 22px;background:#eef2e6;border-right:1px solid var(--line)}.st-sidebar h1{font:32px/1.2 Georgia,serif}.st-sidebar nav{margin:24px 0}.st-sidebar nav button{display:block;width:100%;padding:13px 10px;text-align:left;border:0;border-radius:8px;background:transparent;color:var(--green);cursor:pointer}.st-sidebar nav button[aria-current=step]{background:var(--lime);font-weight:700}.st-sidebar small{display:block;color:var(--muted);font-size:12px}.st-workspace{padding:28px;min-width:0}.st-workspace h2{font:28px/1.3 Georgia,serif}.st-workspace .panel{padding:28px;margin-bottom:24px}.st-workspace p{line-height:1.8}.st-answers{display:flex;gap:10px;flex-wrap:wrap}.st-labs{display:grid;grid-template-columns:1fr 1fr;gap:24px}.st-labs .panel{min-width:0}.st-labs label{display:block;font-size:13px;margin:15px 0}.st-labs textarea{width:100%;margin:12px 0}.st-bar{height:26px;background:#e4c68c;border-radius:8px;overflow:hidden}.st-bar span{height:100%;display:block;background:var(--green)}.st-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px}.st-metrics>div{background:#f0f4e8;padding:12px;border-radius:8px}.st-metrics dt{font-size:11px;color:var(--muted)}.st-metrics dd{margin:5px 0 0;font-size:20px;font-weight:650;overflow-wrap:anywhere}@media(max-width:1000px){.st-labs{grid-template-columns:1fr}}@media(max-width:750px){.st-layout{grid-template-columns:1fr}.st-sidebar nav{max-height:200px;overflow:auto}.st-sidebar{padding:20px}.st-workspace{padding:15px}.st-workspace .panel{padding:20px}.st-metrics{grid-template-columns:1fr 1fr}}