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var(--line);border-left:6px solid var(--color-composer-blue);border-radius:var(--radius-default);min-height:184px;box-shadow:var(--shadow-xl);padding:var(--spacing-16);z-index:1;background:#ffffffe6;grid-template-columns:52px minmax(0,1fr);transition:border-color .16s,box-shadow .16s,transform .16s;display:grid;position:relative;overflow:hidden}.path-card.practice{border-left-color:var(--color-composer-blue)}.path-card.instruction{border-left-color:var(--color-hot-pink)}.path-card.generated{border-left-color:var(--color-sunny-yellow);padding-bottom:64px}.generated-piece-card{min-width:0;position:relative}.generated-piece-card .path-card{height:100%}.archive-piece-button{right:var(--spacing-16);bottom:var(--spacing-16);z-index:2;min-height:36px;padding:0 var(--spacing-16);position:absolute}.path-card.current{border-color:var(--color-composer-blue);box-shadow:var(--shadow-subtle),var(--shadow-xl);background:#fff}.path-card.upcoming{opacity:.74}.path-node{width:min(560px,50% + 72px)}.path-node:nth-child(odd){justify-self:start}.path-node:nth-child(2n){justify-self:end}.path-card:hover{border-color:var(--color-composer-blue);box-shadow:var(--shadow-subtle),var(--shadow-xl);transform:translateY(-2px)}.path-step{border-radius:var(--radius-default);width:52px;height:52px;color:var(--color-composer-blue);font-family:var(--font-neue-haas-grotesk-display);background:#1871da1a;border:1px solid #1871da47;place-items:center;font-size:20px;font-weight:700;line-height:1;display:grid}.path-card.completed .path-step{color:var(--color-emerald-green);background:#1ec07229;border-color:#31805a52}.path-card.current .path-step{border-color:var(--color-midnight-ink);background:var(--color-composer-blue);color:#fff;box-shadow:var(--shadow-subtle)}.path-card.upcoming .path-step{border-color:var(--line);background:var(--surface-canvas-white);color:var(--muted)}.path-card-topline{justify-content:space-between;align-items:center;gap:var(--spacing-12);margin-bottom:var(--spacing-12);display:flex}.path-type,.path-status,.path-open{font-size:12px;font-weight:700;line-height:1.25}.path-type{border-radius:var(--radius-button);text-transform:uppercase;padding:5px 9px}.path-type.instruction{color:var(--color-hot-pink);background:#ffb4ed52}.path-type.practice{color:var(--color-composer-blue);background:#1871da1f}.path-status{border:1px solid var(--line);border-radius:var(--radius-button);color:var(--muted);background:#ffffffd1;flex:none;padding:5px 9px}.path-status.completed{color:var(--color-emerald-green);background:#1ec07229;border-color:#31805a47}.path-status.in_progress{color:var(--color-composer-blue);background:#1871da1f;border-color:#1871da47}.path-card h3{max-width:18ch;font-family:var(--font-neue-haas-grotesk-display);margin:0;font-size:24px;font-weight:700;line-height:1.2}.path-card p{margin:var(--spacing-8) 0 var(--spacing-16);max-width:56ch;color:var(--muted);line-height:1.5}.path-open{color:var(--color-composer-blue)}.panel h2,.card h3{margin:0 0 var(--spacing-12);font-family:var(--font-neue-haas-grotesk-display);letter-spacing:0;font-size:24px;font-weight:600;line-height:1.33}.panel>svg,.card>svg,.intent-option>svg{color:var(--color-composer-blue)}.metric{font-family:var(--font-neue-haas-grotesk-display);font-size:36px;font-weight:700;line-height:1.25}.muted{color:var(--muted)}.auth-layout{width:min(430px,100% - 32px);padding:var(--spacing-48) 0;gap:var(--spacing-16);flex-direction:column;align-items:stretch;margin:0 auto;display:flex}.auth-home-action{justify-content:flex-start;display:flex}.auth-card-shell{justify-content:center;width:100%;display:flex}.auth-card-shell>*{width:min(100%,410px)}.auth-form{width:100%}.auth-heading{gap:var(--spacing-12);grid-template-columns:28px minmax(0,1fr);align-items:start;display:grid}.auth-heading h1{font-family:var(--font-neue-haas-grotesk-display);letter-spacing:0;margin:0 0 6px;font-size:32px;font-weight:700;line-height:1.2}.auth-heading p{margin:0;line-height:1.5}.auth-heading svg{color:var(--color-composer-blue)}.auth-secondary-actions{gap:var(--spacing-12);flex-wrap:wrap;justify-content:space-between;display:flex}.auth-secondary-actions button,.auth-switch a{color:var(--color-composer-blue);cursor:pointer;background:0 0;border:0;padding:0;font-weight:700}.auth-secondary-actions button:disabled{cursor:not-allowed;opacity:.58}.auth-switch{margin:0}.form{gap:var(--spacing-16);display:grid}.field{gap:7px;display:grid}.field label,.field span{font-size:14px;font-weight:700;line-height:1.43}.field input{border:1px solid var(--line);border-radius:var(--radius-default);min-height:46px;color:var(--ink);padding:0 var(--spacing-12);background:#fff}.field input:focus,.generator-controls select:focus,.generator-controls textarea:focus{outline:2px solid var(--color-composer-blue);outline-offset:2px}.error{border:1px solid var(--color-action-red);border-radius:var(--radius-default);color:var(--color-action-red);padding:10px var(--spacing-12);background:#fff1f1}.notice{border:1px solid var(--color-emerald-green);border-radius:var(--radius-default);color:var(--color-emerald-green);padding:10px var(--spacing-12);background:#effaf4}.lesson-layout,.generator-layout{gap:var(--spacing-24);grid-template-columns:minmax(0,1fr) 330px;align-items:start;display:grid}.intent-grid{gap:var(--spacing-12);margin-top:var(--spacing-16);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.intent-option{border:1px solid var(--line);border-radius:var(--radius-default);min-height:112px;color:var(--ink);cursor:pointer;gap:var(--spacing-12);padding:var(--spacing-16);text-align:left;background:#fff;align-items:flex-start;display:flex}.intent-option.active{border-color:var(--color-midnight-ink);background:linear-gradient(var(--color-bubblegum-pink),var(--color-bubblegum-pink)) 100% 0 / 54px 54px no-repeat,var(--color-sunny-yellow);box-shadow:var(--shadow-subtle)}.intent-option span,.intent-option strong,.intent-option small{min-width:0;display:block}.intent-option strong{font-family:var(--font-neue-haas-grotesk-display);margin-bottom:6px;font-size:20px;line-height:1.2}.intent-option small{color:var(--muted);line-height:1.43}.generator-controls{gap:var(--spacing-16);margin-top:var(--spacing-16);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.generator-controls label{gap:7px;min-width:0;display:grid}.generator-controls label>span{font-size:14px;font-weight:700;line-height:1.43}.generator-controls select,.generator-controls textarea{border:1px solid var(--line);border-radius:var(--radius-default);width:100%;color:var(--ink);background:#fff}.generator-controls select{min-height:46px;padding:0 var(--spacing-12)}.generator-controls textarea{min-height:104px;padding:var(--spacing-12);resize:vertical}.goal-field{grid-column:1/-1}.signal-list,.session-summary{gap:var(--spacing-12);display:grid}.signal-list>div,.session-summary>div,.status-row>div{border:1px solid var(--line);border-radius:var(--radius-default);min-width:0;padding:var(--spacing-12);background:#fff}.signal-list span,.signal-list strong,.session-summary span,.session-summary strong{display:block}.signal-list strong,.session-summary strong{overflow-wrap:anywhere}.instruction-header{align-items:flex-start;gap:var(--spacing-12);display:flex}.instruction-header svg{color:var(--color-composer-blue);flex:none}.instruction-content{gap:var(--spacing-24);margin-top:var(--spacing-24);display:grid}.instruction-block{border-top:1px solid var(--line);padding-top:var(--spacing-24)}.instruction-block h3{margin:0 0 var(--spacing-12);font-family:var(--font-neue-haas-grotesk-display);font-size:24px;line-height:1.33}.instruction-block p,.instruction-step p{margin:0 0 var(--spacing-12);color:var(--muted);line-height:1.5}.instruction-block ul{margin:var(--spacing-8) 0 0;color:var(--ink);padding-left:22px;line-height:1.5}.instruction-steps{gap:var(--spacing-12);margin-top:var(--spacing-16);display:grid}.instruction-step{gap:var(--spacing-12);border:1px solid var(--line);border-radius:var(--radius-default);padding:var(--spacing-16);background:#fff;grid-template-columns:44px minmax(0,1fr);display:grid}.instruction-step>strong{color:var(--color-composer-blue);font-family:var(--font-neue-haas-grotesk-display);font-size:24px;line-height:1.2}.instruction-step h4{margin:0 0 var(--spacing-8);font-family:var(--font-neue-haas-grotesk-display);font-size:20px;line-height:1.2}.practice-staff{margin:var(--spacing-24) 0 var(--spacing-16);border:1px solid var(--line);border-radius:var(--radius-default);background:#fff;position:relative;overflow:hidden}.practice-staff:before,.practice-staff:after{z-index:1;pointer-events:none;content:"";width:48px;position:absolute;top:0;bottom:0}.practice-staff:before{background:linear-gradient(90deg,#fff,#fff0);left:0}.practice-staff:after{background:linear-gradient(270deg,#fff,#fff0);right:0}.practice-staff svg{width:100%;height:auto;display:block}.staff-scroll-track{will-change:transform}.staff-surface{fill:#fff}.staff-line,.ledger-line{stroke:var(--color-midnight-ink);stroke-width:1.8px;stroke-linecap:round}.staff-clef{fill:var(--ink);font-family:Georgia,Times New Roman,serif;font-size:74px;font-weight:700}.note-head{fill:#fff;stroke:var(--ink);stroke-width:2px}.note-stem{stroke:var(--ink);stroke-width:2.2px;stroke-linecap:round}.duration-guide{stroke:var(--color-steel-gray);stroke-width:5px;stroke-linecap:round;opacity:.8}.accidental{fill:var(--ink);font-size:22px;font-weight:800}.beat-label{fill:var(--muted);text-anchor:middle;font-size:13px;font-weight:800}.staff-note.current .note-head{fill:var(--color-sunny-yellow);stroke:var(--color-midnight-ink)}.staff-note.current .note-stem,.staff-note.current .duration-guide{stroke:var(--color-midnight-ink)}.staff-note.pass .note-head{fill:var(--color-vivid-green);stroke:var(--color-emerald-green)}.staff-note.pass .note-stem,.staff-note.pass .duration-guide{stroke:var(--color-emerald-green)}.staff-note.fail .note-head,.staff-note.missed .note-head{fill:#fff1f1;stroke:var(--color-action-red)}.staff-note.fail .note-stem,.staff-note.fail .duration-guide,.staff-note.missed .note-stem,.staff-note.missed .duration-guide{stroke:var(--color-action-red)}.staff-note.upcoming{opacity:.76}.staff-playhead line{stroke:var(--color-composer-blue);stroke-width:3px;stroke-linecap:round}.staff-playhead circle{fill:var(--color-composer-blue);stroke:var(--color-midnight-ink);stroke-width:1.5px}.countdown{width:fit-content;min-width:104px;min-height:104px;margin:var(--spacing-24) auto 0;border:1px solid var(--color-midnight-ink);border-radius:var(--radius-default);background:var(--color-sunny-yellow);color:var(--ink);padding:var(--spacing-12) var(--spacing-24);place-items:center;display:grid}.countdown span{text-transform:uppercase;font-size:12px;font-weight:700;line-height:1.25}.countdown strong{font-family:var(--font-neue-haas-grotesk-display);font-size:56px;line-height:1}.status-row{gap:var(--spacing-12);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.status-row span{font-size:12px;font-weight:700;line-height:1.25;display:block}.status-row .metric{text-overflow:ellipsis;white-space:nowrap;font-size:32px;overflow:hidden}.progress-list{gap:var(--spacing-12);display:grid}.settings-grid{gap:var(--spacing-16);margin-top:var(--spacing-32);grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;display:grid}.settings-section{margin-top:var(--spacing-32)}.settings-card-heading{align-items:center;gap:var(--spacing-12);display:flex}.settings-card-heading svg{color:var(--color-composer-blue)}.settings-card-heading h2{margin:0}.archived-list{gap:var(--spacing-12);display:grid}.archived-piece{gap:var(--spacing-16);grid-template-columns:auto minmax(0,1fr) auto;align-items:start;display:grid}.archived-piece>svg{color:var(--color-composer-blue)}.archived-piece h2{margin-bottom:var(--spacing-8)}.archived-actions{margin-top:0}@keyframes canvasBlocksDrift{0%{background-position:calc(100% - 88px) 124px,calc(100% - 220px) 196px,32px 132px,118px 188px,72px calc(100vh - 156px),calc(100% - 128px) calc(100vh - 108px),46% 86px,58% calc(100vh - 220px),calc(100% - 360px) 92px,0 0}45%{background-position:calc(100% - 124px) 150px,calc(100% - 184px) 166px,64px 112px,86px 224px,106px calc(100vh - 118px),calc(100% - 176px) calc(100vh - 148px),43% 116px,61% calc(100vh - 188px),calc(100% - 324px) 122px,0 0}to{background-position:calc(100% - 70px) 104px,calc(100% - 252px) 222px,18px 168px,156px 160px,44px calc(100vh - 196px),calc(100% - 88px) calc(100vh - 72px),49% 58px,55% calc(100vh - 250px),calc(100% - 392px) 72px,0 0}}@keyframes blockStackShift{0%{transform:translate(0)}50%{transform:translate(18px,-14px)}to{transform:translate(-10px,16px)}}@keyframes stageBlocksShift{0%{background-position:22px 22px,calc(100% - 132px) 42px,calc(100% - 78px) calc(100% - 188px),46px calc(100% - 120px),calc(100% - 220px) calc(100% - 86px),0 0}50%{background-position:42px 34px,calc(100% - 160px) 66px,calc(100% - 104px) calc(100% - 160px),70px calc(100% - 144px),calc(100% - 180px) calc(100% - 68px),0 0}to{background-position:16px 46px,calc(100% - 104px) 26px,calc(100% - 58px) calc(100% - 210px),28px calc(100% - 92px),calc(100% - 252px) calc(100% - 110px),0 0}}@keyframes panelBlocksShift{0%{background-position:100% 0,calc(100% - 84px) 70px,calc(100% - 176px) 28px,0 0}50%{background-position:calc(100% - 26px) 18px,calc(100% - 116px) 46px,calc(100% - 138px) 54px,0 0}to{background-position:calc(100% - 8px) -8px,calc(100% - 62px) 88px,calc(100% - 208px) 10px,0 0}}@keyframes featureSquareNudge{0%{transform:translate(0)}50%{transform:translate(-12px,6px)}to{transform:translate(8px,-10px)}}@media(prefers-reduced-motion:reduce){body,.hero:before,.piano-stage,.ai-panel,.landing-features .panel:after{animation:none}.button:hover:not(:disabled),.path-card:hover{transform:none}}@media(max-width:1100px){.landing-features{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:880px){body{background:linear-gradient(#ffbb3833,#ffbb3833) calc(100% - 72px) 104px / 52px 52px no-repeat,linear-gradient(#ffb4ed38,#ffb4ed38) 16px 112px / 64px 42px no-repeat,linear-gradient(#1f86ff24,#1f86ff24) calc(100% - 124px) 188px / 78px 42px no-repeat,linear-gradient(#1ec07224,#1ec07224) 36px calc(100vh - 138px) / 82px 58px no-repeat,var(--paper);animation:none}.topbar{align-items:flex-start;gap:var(--spacing-12);height:auto;min-height:68px;padding:var(--spacing-12) var(--spacing-16);flex-direction:column}.nav-links{gap:var(--spacing-12);flex-wrap:wrap;width:100%;font-size:14px}.hero,.lesson-layout,.generator-layout{grid-template-columns:1fr}.hero{gap:var(--spacing-32);min-height:auto;padding-top:var(--spacing-24)}.hero:before{display:none}.hero h1,.page-title{font-size:56px;line-height:1.11}.piano-stage{min-height:330px;padding:var(--spacing-16)}.keyboard{height:180px}.preview-topline{flex-direction:column;align-items:stretch}.preview-pills{justify-content:flex-start}.preview-status{grid-template-columns:1fr}.preview-pill{width:fit-content}.grid,.landing-features,.path-grid,.settings-grid,.status-row,.intent-grid,.generator-controls,.archived-piece{grid-template-columns:1fr}.landing-footer{flex-direction:column;align-items:flex-start}.landing-footer p{text-align:left}.path-section-heading{flex-direction:column;align-items:flex-start}.path-heading-actions{justify-content:flex-start}.path-sequence{gap:var(--spacing-16);padding-left:var(--spacing-24)}.path-sequence:before{left:24px}.path-node,.path-node:nth-child(odd),.path-node:nth-child(2n){justify-self:stretch;width:100%}}@media(max-width:520px){.page{width:min(100% - 24px,var(--page-max-width));padding-top:var(--spacing-24)}.hero h1,.page-title{font-size:36px;line-height:1.25}.button{width:100%;min-height:48px}.actions{width:100%}.nav-links .header-signup{min-height:40px;padding:0 var(--spacing-16)}}@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-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}