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svg{flex-shrink:0}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-3 svg:not([class*=size-]){width:calc(var(--spacing) * 3);height:calc(var(--spacing) * 3)}.\[\&_svg\:not\(\[class\*\=\'size-\'\]\)\]\:size-4 svg:not([class*=size-]){width:calc(var(--spacing) * 4);height:calc(var(--spacing) * 4)}.\[\&_svg\:not\(\[class\*\=\'text-\'\]\)\]\:text-muted-foreground svg:not([class*=text-]){color:var(--muted-foreground)}:is(.\*\:\[span\]\:last\:flex>*):is(span):last-child{display:flex}:is(.\*\:\[span\]\:last\:items-center>*):is(span):last-child{align-items:center}:is(.\*\:\[span\]\:last\:gap-2>*):is(span):last-child{gap:calc(var(--spacing) * 2)}}@property --tw-animation-delay{syntax:"*";inherits:false;initial-value:0s}@property --tw-animation-direction{syntax:"*";inherits:false;initial-value:normal}@property --tw-animation-duration{syntax:"*";inherits:false}@property --tw-animation-fill-mode{syntax:"*";inherits:false;initial-value:none}@property --tw-animation-iteration-count{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-enter-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-enter-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-blur{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-opacity{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-rotate{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-scale{syntax:"*";inherits:false;initial-value:1}@property --tw-exit-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-exit-translate-y{syntax:"*";inherits:false;initial-value:0}html,body{min-height:100%;overflow-x:clip}#app{min-height:100%}body{color:var(--color-ink);font-family:var(--font-body);background:linear-gradient(135deg, var(--color-paper-2) 0%, var(--color-paper) 48%, var(--color-paper-deep) 100%), repeating-linear-gradient(0deg, var(--color-rule) 0 1px, transparent 1px 2.65rem);margin:0}@supports (color:color-mix(in lab, red, red)){body{background:linear-gradient(135deg, color-mix(in oklab, var(--color-paper-2) 86%, var(--color-paper-deep)) 0%, var(--color-paper) 48%, var(--color-paper-deep) 100%), repeating-linear-gradient(0deg, color-mix(in oklab, var(--color-rule) 42%, transparent) 0 1px, transparent 1px 2.65rem)}}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility}body:before{content:"";z-index:-1;pointer-events:none;opacity:.34;background:linear-gradient(90deg, transparent 0%, var(--color-accent) 48%, transparent 100%), 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0;color:var(--color-ink);font-size:var(--text-md);font-variant-numeric:tabular-nums;font-weight:800;line-height:1}.mode-grid{gap:var(--space-xs);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.mode-tab{align-items:center;gap:var(--space-xs);border:var(--rule-hairline);border-color:var(--color-rule);border-radius:var(--radius-lg);min-width:0;min-height:3.25rem;padding:var(--space-xs) var(--space-sm);color:var(--color-ink-2);background:var(--color-paper-2);white-space:nowrap;justify-content:flex-start;text-decoration:none;display:inline-flex;overflow:hidden}.mode-tab:hover{background:var(--color-paper-3)}.mode-tab.is-active{border-color:var(--color-accent);color:var(--color-accent-ink);background:var(--color-accent)}.mode-tab:disabled{border-color:var(--color-rule);color:var(--color-neutral);background:var(--color-paper)}.mode-tab__text{gap:var(--space-2xs);min-width:0;display:grid}.mode-tab__label,.mode-tab__description{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.mode-tab__label{font-size:var(--text-sm);font-weight:800}.mode-tab__description{font-size:var(--text-xs);opacity:.78;font-weight:600;display:none}.trainer-workbench{gap:var(--space-md);grid-template-columns:minmax(0,1fr);align-items:start;display:grid}.trainer-sidebar{gap:var(--space-md);flex-direction:column;min-width:0;display:flex}.practice-panel,.dashboard-panel,.reference-panel{border:var(--rule-hairline);border-radius:var(--radius-xl);min-width:0;color:var(--color-ink);background:var(--color-paper-2)}@supports (color:color-mix(in lab, red, red)){.practice-panel,.dashboard-panel,.reference-panel{background:color-mix(in oklab, var(--color-paper-2) 94%, transparent)}}.practice-panel,.dashboard-panel,.reference-panel{padding:var(--space-md)}.panel-header{gap:var(--space-md);grid-template-columns:minmax(0,1fr);display:grid}.section-label{color:var(--color-accent);font-size:var(--text-xs);margin:0;font-weight:800;line-height:1}.panel-title{margin:var(--space-xs) 0 0;color:var(--color-ink);font-family:var(--font-display);font-size:var(--text-xl);letter-spacing:0;overflow-wrap:anywhere;font-weight:800;line-height:1.12}.panel-copy{max-width:68ch;margin:var(--space-xs) 0 0;color:var(--color-ink-2);font-size:var(--text-sm);line-height:1.65}.lesson-context{gap:var(--space-sm);border:var(--rule-hairline);border-radius:var(--radius-lg);padding:var(--space-sm);color:var(--color-ink-2);background:var(--color-paper-3);font-size:var(--text-sm);grid-template-columns:minmax(0,1fr);margin-block-start:var(--space-md);line-height:1.55;display:grid}.lesson-context p{margin:var(--space-xs) 0 0}.lesson-pill{border-radius:var(--radius-pill);width:fit-content;padding:var(--space-2xs) var(--space-xs);color:var(--color-accent-ink);background:var(--color-accent);font-size:var(--text-xs);font-weight:800;display:inline-flex}.queue-strip{gap:var(--space-xs);flex-wrap:wrap;align-content:start;display:flex}.queue-strip span{border:var(--rule-hairline);border-radius:var(--radius-md);padding:var(--space-2xs) 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0 0;font-size:var(--text-sm);line-height:1.6}.answer-grid{gap:var(--space-xs);grid-template-columns:repeat(auto-fit,minmax(4.5rem,1fr));display:grid}.answer-button{border-color:var(--color-rule-2);border-radius:var(--radius-lg);min-height:3rem;color:var(--color-ink);background:var(--color-paper-3);font-size:clamp(.82rem, .78rem + .2vw, var(--text-base));white-space:normal;font-weight:800}.answer-button:hover{border-color:var(--color-accent);background:var(--color-paper-4)}.piano-panel{border:var(--rule-hairline);border-radius:var(--radius-lg);padding:var(--space-sm);background:var(--color-paper)}.piano-key-grid{gap:var(--space-2xs);grid-template-columns:repeat(auto-fit,minmax(3.45rem,1fr));display:grid}.piano-key{border:var(--rule-hairline);border-radius:0 0 var(--radius-sm) var(--radius-sm);min-height:3.5rem;color:var(--color-paper-deep);background:var(--color-staff-paper);font-size:var(--text-xs);touch-action:manipulation;font-weight:800;position:relative}.piano-key.is-selected{border-color:var(--color-accent);color:var(--color-accent-ink);background:var(--color-accent)}.piano-key:hover{transform:translateY(-1px)}.piano-key:active{transform:translateY(1px)}.piano-key:disabled{cursor:not-allowed;opacity:.55}.piano-key__label{position:absolute;inset-block-end:var(--space-xs);inset-inline:0}.construction-actions{gap:var(--space-xs);grid-template-columns:repeat(2,minmax(0,1fr));margin-block-start:var(--space-sm);display:grid}.drill-settings{gap:var(--space-sm);border:var(--rule-hairline);border-radius:var(--radius-lg);padding:var(--space-md);background:var(--color-paper-3);margin-block-start:var(--space-md);display:grid}.field-stack{gap:var(--space-xs);color:var(--color-ink-2);font-size:var(--text-sm);flex-direction:column;font-weight:700;display:flex}.select-control{border:var(--rule-hairline);border-radius:var(--radius-md);min-height:2.75rem;padding-inline:var(--space-sm);color:var(--color-ink);background:var(--color-paper-2)}.toggle-row{justify-content:space-between;align-items:center;gap:var(--space-sm);border:var(--rule-hairline);border-radius:var(--radius-md);min-height:2.75rem;padding:var(--space-xs) var(--space-sm);color:var(--color-ink-2);background:var(--color-paper-2);font-size:var(--text-sm);font-weight:700;display:flex}.toggle-row input{min-width:1.25rem;min-height:1.25rem;accent-color:var(--color-accent)}.dashboard-header{justify-content:space-between;align-items:center;gap:var(--space-sm);display:flex}.dashboard-icon{color:var(--color-muted);flex:none}.dashboard-metrics,.dashboard-section{margin-block-start:var(--space-md)}.dashboard-title{color:var(--color-ink);font-size:var(--text-sm);margin:0;font-weight:800}.course-list{gap:var(--space-xs);margin-block-start:var(--space-xs);display:grid}.course-stage{gap:var(--space-xs);display:grid}.course-stage+.course-stage{margin-block-start:var(--space-sm)}.course-stage-name{color:var(--color-muted);font-size:var(--text-xs);letter-spacing:0;margin:0;font-weight:800}.course-card{border:var(--rule-hairline);border-radius:var(--radius-md);padding:var(--space-sm);background:var(--color-paper-3)}.course-row{justify-content:space-between;align-items:center;gap:var(--space-xs);display:flex}.course-name,.course-status{text-overflow:ellipsis;white-space:nowrap;margin:0;overflow:hidden}.course-name{color:var(--color-ink);font-size:var(--text-sm);font-weight:800}.course-status{color:var(--color-accent);font-size:var(--text-xs);font-weight:800}.progress-track{border-radius:var(--radius-pill);background:var(--color-paper);height:.45rem;margin-block-start:var(--space-xs);overflow:hidden}.progress-bar{border-radius:inherit;background:var(--color-accent);height:100%}.weak-note-list{gap:var(--space-xs);flex-wrap:wrap;margin-block-start:var(--space-xs);display:flex}.weak-note-chip{border:1px solid var(--color-danger-rule);border-radius:var(--radius-md);padding:var(--space-2xs) var(--space-xs);color:var(--color-ink);background:var(--color-danger-paper);font-size:var(--text-xs);white-space:nowrap;font-weight:800}.empty-copy{margin:var(--space-xs) 0 0;color:var(--color-ink-2);font-size:var(--text-sm);line-height:1.55}.dashboard-actions{gap:var(--space-xs);grid-template-columns:repeat(2,minmax(0,1fr));margin-block-start:var(--space-md);display:grid}.dashboard-action{border-radius:var(--radius-lg);white-space:nowrap;min-width:0;min-height:2.75rem}.danger-action{border-radius:var(--radius-lg);width:100%;min-height:2.75rem;color:var(--color-danger);margin-block-start:var(--space-xs)}.reference-grid{gap:var(--space-md);grid-template-columns:minmax(0,1fr);margin-block-start:var(--space-md);display:grid}.locked-panel,.not-found-panel{gap:var(--space-sm);display:grid}.not-found-panel{width:min(42rem, calc(100vw - var(--space-lg)));margin:var(--space-xl) auto;border:var(--rule-hairline);border-radius:var(--radius-xl);padding:var(--space-lg);color:var(--color-ink);background:var(--color-paper-2)}@supports (color:color-mix(in lab, red, red)){.not-found-panel{background:color-mix(in oklab, var(--color-paper-2) 94%, transparent)}}.locked-actions{gap:var(--space-sm);flex-wrap:wrap;align-items:center;display:flex}.text-link{border:var(--rule-hairline);border-radius:var(--radius-lg);min-height:2.5rem;padding-inline:var(--space-sm);color:var(--color-ink);background:var(--color-paper-3);font-size:var(--text-sm);align-items:center;font-weight:800;text-decoration:none;display:inline-flex}.text-link:hover{border-color:var(--color-accent);color:var(--color-accent-ink);background:var(--color-accent)}.reference-table-card{border:var(--rule-hairline);border-radius:var(--radius-lg);background:var(--color-paper-3);min-width:0;overflow:hidden}.reference-table-title{border-block-end:var(--rule-hairline);padding:var(--space-sm);color:var(--color-ink);background:var(--color-paper-4);font-size:var(--text-sm);font-weight:800}.reference-table-wrap{overflow-x:auto}.reference-table{border-collapse:collapse;text-align:left;width:100%;min-width:25rem;font-size:var(--text-sm)}.reference-table th,.reference-table td{padding:var(--space-sm)}.reference-table th{color:var(--color-muted);font-size:var(--text-xs);font-weight:800}.reference-table tr+tr{border-block-start:var(--rule-hairline)}.reference-table td{color:var(--color-ink-2)}.reference-table td:first-child{color:var(--color-ink);font-weight:800}@media (width>=40rem){.trainer-shell,.app-header{padding:var(--space-lg)}.mode-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.piano-key{min-height:5.75rem}.drill-settings{grid-template-columns:repeat(3,minmax(0,1fr))}.lesson-context{grid-template-columns:minmax(0,1fr) auto;align-items:start}}@media (width>=60rem){.app-header{grid-template-columns:minmax(0,1fr) minmax(22rem,28rem)}.mode-grid{grid-template-columns:repeat(7,minmax(0,1fr))}.trainer-workbench{grid-template-columns:minmax(0,1fr) minmax(20rem,23rem)}.panel-header{grid-template-columns:minmax(0,1fr) minmax(16rem,20rem);align-items:start}}@media (width>=80rem){.practice-layout{grid-template-columns:minmax(0,1fr) minmax(14rem,16rem)}}@media (hover:hover) and (pointer:fine){.mode-tab:hover,.answer-button:hover,.dashboard-action:hover,.danger-action:hover{transform:translateY(-1px)}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.15s!important;animation-duration:.15s!important;animation-iteration-count:1!important}}.reduce-motion *,.reduce-motion :before,.reduce-motion :after{transition-duration:.15s!important;animation-duration:.15s!important;animation-iteration-count:1!important}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-duration{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@keyframes enter{0%{opacity:var(--tw-enter-opacity,1);transform:translate3d(var(--tw-enter-translate-x,0),var(--tw-enter-translate-y,0),0)scale3d(var(--tw-enter-scale,1),var(--tw-enter-scale,1),var(--tw-enter-scale,1))rotate(var(--tw-enter-rotate,0));filter:blur(var(--tw-enter-blur,0))}}@keyframes exit{to{opacity:var(--tw-exit-opacity,1);transform:translate3d(var(--tw-exit-translate-x,0),var(--tw-exit-translate-y,0),0)scale3d(var(--tw-exit-scale,1),var(--tw-exit-scale,1),var(--tw-exit-scale,1))rotate(var(--tw-exit-rotate,0));filter:blur(var(--tw-exit-blur,0))}}