:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--font-ui:"Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;--font-headline:"Iowan Old Style", "Palatino Linotype", "Noto Serif SC", "Songti SC", Georgia, serif;--surface:#131313;--surface-low:#1c1b1b;--surface-mid:#201f1f;--surface-high:#2a2a2a;--surface-top:#353534;--surface-lowest:#0e0e0e;--surface-bright:#393939;--primary:#cdbdff;--primary-strong:#360094;--secondary:#bbc8d0;--secondary-container:#3c494f;--tertiary:#00daf3;--tertiary-container:#00363d;--outline:#45465226;--outline-strong:#908f9d47;--text:#e5e2e1;--text-muted:#c6c5d4;--text-soft:#908f9d;--shadow-soft:0 28px 90px #e5e2e10d;--shadow-float:0 28px 72px #e5e2e10f;--radius-sm:18px;--radius-md:28px;--radius-pill:999px;--container:1180px}*{box-sizing:border-box}html,body{min-height:100%}body{color:var(--text);font-family:var(--font-ui);text-rendering:optimizelegibility;background:radial-gradient(circle at 0 0,#36009447,#0000 28%),radial-gradient(circle at 85% 18%,#00daf329,#0000 24%),linear-gradient(#171616 0%,#131313 48%,#111 100%);margin:0}a,button,input,select,textarea{transition:all .24s ease-in-out}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{border:0}img{max-width:100%;display:block}::selection{color:#20005f;background:#cdbdffe0}.app-frame{flex-direction:column;min-height:100vh;display:flex;position:relative;overflow:hidden}.public-frame{min-height:100vh;position:relative;overflow:hidden}.app-ambient{pointer-events:none;filter:blur(120px);opacity:.75;z-index:0;position:fixed;inset:auto}.public-ambient{pointer-events:none;filter:blur(120px);opacity:.75;z-index:0;position:fixed}.app-ambient-primary{background:#3600946b;width:360px;height:360px;top:112px;left:-120px}.app-ambient-secondary{background:#00daf329;width:420px;height:420px;top:30%;right:-120px}.app-ambient-tertiary{background:#bbc8d024;width:340px;height:340px;bottom:-140px;left:28%}.container,.public-container{width:min(var(--container), calc(100% - 40px));margin:0 auto}.app-header,.public-header{z-index:20;-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);background:#0e0e0eb3;padding:18px 0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:20px;display:flex}.brand,.public-brand{align-items:center;gap:12px;min-width:max-content;display:inline-flex}.brand-mark{width:42px;height:42px;color:var(--primary);background:linear-gradient(135deg,#cdbdff2e,#00daf324);border-radius:18px;justify-content:center;align-items:center;display:inline-flex;box-shadow:inset 0 0 0 1px #cdbdff29}.brand-copy{gap:2px;display:grid}.brand-title{font-family:var(--font-headline), serif;letter-spacing:-.02em;font-size:1.55rem;font-style:italic;line-height:1}.brand-caption{letter-spacing:.2em;text-transform:uppercase;color:var(--text-soft);font-size:.72rem}.nav-links{border-radius:var(--radius-pill);min-width:0;box-shadow:inset 0 0 0 1px var(--outline);scrollbar-width:none;background:#1c1b1bb8;flex:auto;align-items:center;gap:8px;padding:8px;display:inline-flex;overflow-x:auto}.nav-links::-webkit-scrollbar{display:none}.public-nav{border-radius:var(--radius-pill);box-shadow:inset 0 0 0 1px var(--outline);background:#1c1b1bb8;align-items:center;gap:8px;padding:8px;display:inline-flex}.nav-link{border-radius:var(--radius-pill);color:var(--text-muted);white-space:nowrap;flex:none;padding:10px 16px;font-size:.93rem;font-weight:700}.nav-link:hover,.nav-link:focus-visible,.nav-link.is-active{color:var(--text);background:#353534d1}.header-actions{flex:none;align-items:center;gap:12px;display:flex}.app-main{z-index:1;flex:1;padding:34px 0 88px;position:relative}.public-main{z-index:1;padding:42px 0 84px;position:relative}.app-footer{z-index:1;padding:32px 0 44px;position:relative}.public-footer{z-index:1;padding:24px 0 44px;position:relative}.locale-switcher{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#0c0e12bf;border:1px solid #ffffff24;border-radius:999px;align-items:center;gap:6px;padding:4px;display:inline-flex}.locale-switcher-button{color:var(--ink-muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:999px;padding:8px 12px;transition:background-color .18s,color .18s}.locale-switcher-button.is-active{color:var(--ink-strong);background:linear-gradient(135deg,#71ecce38,#ffbe5c2e)}.footer-shell{box-shadow:inset 0 0 0 1px var(--outline);background:#1c1b1bd1;border-radius:30px;justify-content:space-between;align-items:flex-end;gap:24px;padding:28px 32px;display:flex}.footer-title{font-family:var(--font-headline), serif;margin:0 0 6px;font-size:1.2rem}.footer-copy,.footer-links{color:var(--text-soft);font-size:.88rem;line-height:1.7}.footer-links{flex-wrap:wrap;justify-content:flex-end;gap:18px;display:flex}.page-shell,.page-stack,.public-page{gap:28px;display:grid}.page-shell{padding-bottom:24px}.eyebrow{text-transform:uppercase;letter-spacing:.28em;color:var(--tertiary);margin:0;font-size:.75rem}.display-title,.section-title,.card-title,.metric-value,.hero-notation,.editorial-quote{font-family:var(--font-headline), serif;letter-spacing:-.03em}.display-title{margin:0;font-size:clamp(2.8rem,7vw,5.6rem);font-weight:500;line-height:.96}.section-title{margin:0;font-size:clamp(2rem,4vw,3.35rem);font-weight:500;line-height:1}.page-title{font-family:var(--font-headline), serif;letter-spacing:-.03em;margin:0;font-size:clamp(2.4rem,4vw,4.2rem);line-height:1}.card-title{margin:0;font-size:1.65rem;line-height:1.1}.body-copy{color:var(--text-muted);margin:0;font-size:1rem;line-height:1.78}.body-copy.large{font-size:1.08rem}.micro-copy,.helper-copy,.muted{color:var(--text-soft);margin:0}.micro-copy{font-size:.82rem;line-height:1.6}.helper-copy{font-size:.88rem;line-height:1.7}.lead-grid,.two-column-grid,.auth-layout,.hero-section{gap:24px;display:grid}.hero-section,.auth-layout{grid-template-columns:minmax(0,1.25fr) minmax(320px,.95fr);align-items:stretch}.surface-panel,.glass-panel,.sunken-panel,.feature-card,.list-item,.mini-card,.status-card,.metric-card,.job-card,.preview-card,.auth-card,.hero-preview,.page-banner{border-radius:var(--radius-md)}.surface-panel,.page-banner{box-shadow:var(--shadow-soft), inset 0 0 0 1px var(--outline);background:linear-gradient(#2a2a2aeb,#1c1b1bf5);padding:30px}.glass-panel,.auth-card{-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);box-shadow:inset 0 0 0 1px #908f9d29, var(--shadow-float);background:#35353499;padding:30px}.sunken-panel,.preview-card,.mini-card,.feature-card,.metric-card,.list-item,.job-card{background:linear-gradient(#141414f0,#0e0e0efa);padding:22px;box-shadow:inset 0 0 0 1px #908f9d1a}.stack-xs,.stack-sm,.stack-md,.stack-lg,.stack-xl{display:grid}.stack-xs{gap:8px}.stack-sm{gap:12px}.stack-md{gap:16px}.stack-lg{gap:22px}.stack-xl{gap:30px}.button-row,.inline-actions,.inline-meta,.field-row,.split-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.button{border-radius:var(--radius-pill);letter-spacing:.01em;cursor:pointer;justify-content:center;align-items:center;gap:10px;min-height:48px;padding:14px 20px;font-size:.95rem;font-weight:800;display:inline-flex}.public-button{border-radius:var(--radius-pill);justify-content:center;align-items:center;gap:10px;min-height:48px;padding:14px 20px;font-size:.95rem;font-weight:800;display:inline-flex}.public-button.primary{color:#20005f;background:linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);box-shadow:0 18px 44px #36009447}.public-button.secondary{color:var(--text);box-shadow:inset 0 0 0 1px var(--outline);background:#1c1b1bd6}.public-button.tertiary{color:var(--tertiary);background:#00daf31f;box-shadow:inset 0 0 0 1px #00daf324}.button:disabled{cursor:not-allowed;opacity:.56}.button-primary{color:#20005f;background:linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);box-shadow:0 18px 44px #36009447}.button-primary:hover,.button-primary:focus-visible{transform:translateY(-1px);box-shadow:0 24px 54px #36009457}.button-secondary{color:var(--text);box-shadow:inset 0 0 0 1px var(--outline);background:#1c1b1bd6}.button-secondary:hover,.button-secondary:focus-visible{background:#393939b8}.button-tertiary{color:var(--tertiary);background:#00daf31f;box-shadow:inset 0 0 0 1px #00daf324}.button-tertiary:hover,.button-tertiary:focus-visible{background:#00daf32e}.button-ghost{min-height:40px;padding-inline:16px;font-size:.88rem}.text-action{appearance:none;color:var(--color-link,#0b6bcb);font:inherit;font-weight:inherit;cursor:pointer;text-align:left;background:0 0;border:0;padding:0}.text-action:hover:not(:disabled),.text-action:focus-visible{text-decoration:underline}.text-action:disabled{cursor:wait;opacity:.65}.resource-version-history{border-left:2px solid var(--color-border-strong);margin:-8px 0 8px 16px;padding:12px 0 4px 16px}.resource-library-tools{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding-block:4px 12px;display:grid}.resource-tool-form{grid-template-columns:minmax(140px,1fr) minmax(140px,1fr) auto;align-items:end}.resource-reuse-form{grid-template-columns:repeat(3,minmax(120px,1fr)) auto}.resource-folder-manager{grid-column:1/-1;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px;display:grid}.resource-folder-row,.resource-move-control{align-items:center;gap:8px;display:flex}.resource-folder-row{border:1px solid var(--color-border);border-radius:6px;justify-content:space-between;min-width:0;padding:8px 10px}.resource-folder-row span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.resource-folder-edit{grid-template-columns:minmax(120px,.8fr) minmax(150px,1fr) auto;align-items:center;gap:8px;width:100%;display:grid}.resource-row-actions{justify-items:end;gap:8px;display:grid}.resource-student-access{border:1px solid var(--color-border);border-radius:6px;min-width:0;max-height:12rem;padding:.75rem;overflow:auto}.resource-student-access legend{padding:0 .35rem;font-weight:700}.resource-student-option{align-items:flex-start;gap:.55rem;min-width:0;display:flex}.resource-student-option input{flex:none;margin-top:.2rem}.resource-student-option span{overflow-wrap:anywhere;min-width:0}.resource-move-control .field-select{min-width:160px}@media (max-width:980px){.resource-library-tools,.resource-tool-form,.resource-reuse-form{grid-template-columns:1fr}.resource-row-actions{justify-items:stretch;width:100%}.resource-move-control .field-select{flex:1;min-width:0}.resource-folder-edit{grid-template-columns:1fr}}.compact-list-item{min-height:0;padding-block:10px}.status-chip{border-radius:var(--radius-pill);letter-spacing:.08em;text-transform:uppercase;width:fit-content;box-shadow:inset 0 0 0 1px var(--outline);align-items:center;gap:8px;padding:10px 14px;font-size:.78rem;font-weight:800;display:inline-flex}.status-chip svg{flex:none}.tone-primary{color:var(--primary);background:#cdbdff1f}.tone-cyan{color:var(--tertiary);background:#00daf31f}.tone-green{color:#8cf6be;background:#5fc78b24}.tone-amber{color:#ffd37a;background:#ffc45d24}.tone-red{color:#ffb4ab;background:#ff818124}.tone-neutral{color:var(--secondary);background:#bbc8d01a}.list-item progress{width:min(100%,360px);height:8px;accent-color:var(--tertiary)}.hero-copy{align-content:start;gap:20px;padding:18px 0;display:grid}.hero-preview{box-shadow:inset 0 0 0 1px #908f9d1f, var(--shadow-soft);background:linear-gradient(#1c1b1beb,#0e0e0efa);gap:20px;padding:28px;display:grid}.preview-staff{background:linear-gradient(180deg, #35353447, #35353414), radial-gradient(circle at top left, #cdbdff24, transparent 36%), var(--surface-high);border-radius:24px;min-height:180px;padding:26px;position:relative;overflow:hidden}.staff-line{background:#c6c5d45c;border-radius:999px;height:2px;margin-block:16px}.staff-note{background:#e5e2e1eb;border-radius:14px 14px 11px 11px;width:18px;height:14px;position:absolute;transform:rotate(-24deg)}.staff-note:after{content:"";background:#e5e2e1f0;border-radius:999px;width:2px;height:38px;position:absolute;top:-34px;right:-3px;transform:rotate(20deg)}.note-a{top:104px;left:18%}.note-b{top:78px;left:42%}.note-c{top:54px;left:67%}.hero-notation{color:var(--tertiary);flex-wrap:wrap;align-items:center;gap:18px;font-size:clamp(2rem,4vw,3.25rem);display:flex}.hero-notation span:nth-child(4){opacity:.68}.feature-grid,.metric-grid,.info-grid,.summary-grid,.score-summary-grid{gap:18px;display:grid}.workflow-grid,.access-grid,.preview-grid{gap:24px;display:grid}.feature-grid,.metric-grid,.summary-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.score-summary-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.score-summary-grid .wide{grid-column:span 2}.info-grid,.workflow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.access-grid,.preview-grid{grid-template-columns:minmax(0,1.15fr) minmax(320px,.95fr)}.feature-card{align-content:start;gap:14px;display:grid}.feature-icon,.info-icon,.dropzone-icon,.icon-badge{width:46px;height:46px;color:var(--primary);background:#cdbdff1a;border-radius:18px;justify-content:center;align-items:center;display:inline-flex;box-shadow:inset 0 0 0 1px #cdbdff1f}.icon-badge.tertiary,.info-icon.tertiary,.dropzone-icon{color:var(--tertiary);background:#00daf31f;box-shadow:inset 0 0 0 1px #00daf324}.metric-card{align-content:start;gap:6px;display:grid}.metric-label{letter-spacing:.18em;text-transform:uppercase;color:var(--text-soft);margin:0;font-size:.75rem}.metric-value{margin:0;font-size:2.1rem;line-height:1}.metric-value.compact{font-size:1.6rem}.preview-shell{box-shadow:inset 0 0 0 1px #908f9d1f, var(--shadow-soft);border-radius:var(--radius-md);background:linear-gradient(#1c1b1beb,#0e0e0efa);gap:20px;padding:28px;display:grid}.kianpu-line{font-family:var(--font-headline), serif;letter-spacing:-.03em;color:var(--tertiary);flex-wrap:wrap;align-items:center;gap:18px;font-size:clamp(2rem,4vw,3.2rem);display:flex}.kianpu-line span:nth-child(4){opacity:.7}.cloud-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.cloud-chip{min-height:86px;color:var(--text-muted);box-shadow:inset 0 0 0 1px var(--outline);text-align:center;background:#2a2a2aeb;border-radius:24px;align-content:center;justify-items:center;gap:8px;padding:16px;display:grid}.live-chip{border-radius:var(--radius-pill);letter-spacing:.08em;text-transform:uppercase;width:fit-content;box-shadow:inset 0 0 0 1px var(--outline);color:var(--tertiary);background:#00daf31f;justify-content:center;align-items:center;gap:8px;padding:10px 14px;font-size:.78rem;font-weight:800;display:inline-flex}.page-banner{align-items:start;gap:18px;display:grid}.page-banner.split{grid-template-columns:minmax(0,1.35fr) minmax(280px,.85fr)}.page-banner-actions{flex-wrap:wrap;gap:12px;display:flex}.form-grid{gap:18px;display:grid}.field-group{gap:10px;display:grid}.field-label{letter-spacing:.16em;text-transform:uppercase;color:var(--secondary);font-size:.8rem;font-weight:800}.field-control,.field-select,.locked-field{width:100%;min-height:54px;color:var(--text);box-shadow:inset 0 0 0 1px var(--outline), inset 0 -1px 0 #00daf329;background:linear-gradient(#353534e6,#2a2a2afa);border:0;border-radius:20px;padding:16px 18px}.field-control::placeholder{color:#c6c5d4b3}.field-control:focus,.field-select:focus{outline:none;box-shadow:inset 0 0 0 1px #00daf357,0 0 0 6px #00daf314}.field-select{appearance:none}.locked-field{color:var(--text-muted);align-items:center;display:flex}.form-status{box-shadow:inset 0 0 0 1px var(--outline);border-radius:18px;padding:14px 16px;font-size:.9rem;line-height:1.6}.form-status.success{color:#8cf6be;background:#5fc78b1f}.form-status.error{color:#ffb4ab;background:#ff81811f}.collaboration-conflict-panel{background:#ff818114;border:1px solid #ff818175;border-radius:6px;gap:10px;padding:14px;display:grid}.collaboration-offline-panel{background:#00daf312;border:1px solid #00daf357;border-radius:6px;gap:10px;padding:14px;display:grid}.collaboration-history-toolbar{padding-block:var(--space-2);border-block:1px solid var(--outline);justify-content:space-between;align-items:center;gap:12px;display:flex}@media (max-width:640px){.collaboration-history-toolbar{flex-direction:column;align-items:stretch}}.split-layout{grid-template-columns:minmax(0,.95fr) minmax(0,1.1fr);gap:24px;display:grid}.list-grid{gap:14px;display:grid}.list-item,.job-card{justify-content:space-between;align-items:flex-start;gap:18px;display:flex}.list-item-content,.job-card-content{flex:1;gap:10px;display:grid}.item-title{margin:0;font-size:1rem;font-weight:800}.item-meta{color:var(--text-soft);margin:0;font-size:.86rem;line-height:1.6}.transpose-panel,.playback-panel{grid-template-columns:minmax(140px,220px) minmax(0,1fr);align-items:end;gap:16px;display:grid}.practice-grid{gap:16px;display:grid}.practice-controls,.loop-controls{gap:12px;display:grid}.practice-controls{grid-template-columns:repeat(3,minmax(150px,1fr))}.loop-controls{grid-template-columns:repeat(2,minmax(140px,1fr))}.practice-toggle{border-radius:var(--radius-sm);min-height:48px;color:var(--text-main);box-shadow:inset 0 0 0 1px var(--outline);background:#ffffff0e;align-items:center;gap:10px;padding:12px 14px;display:flex}.practice-toggle input{width:18px;height:18px;accent-color:var(--primary)}.practice-range{width:100%;accent-color:var(--primary)}.part-practice-list{gap:10px;display:grid}.part-practice-header,.part-practice-row{justify-content:space-between;align-items:center;gap:14px;display:flex}.part-practice-header{color:var(--text-soft)}.part-practice-row{border-radius:var(--radius-sm);min-height:68px;box-shadow:inset 0 0 0 1px var(--outline);background:#ffffff0b;padding:14px}.toggle-button.is-active{color:#071011;background:var(--tertiary)}.toggle-button.is-active-danger{color:#2b0909;background:#ffb4a8}.correction-panel{grid-template-columns:minmax(180px,1.2fr) repeat(4,minmax(120px,.7fr));align-items:end;gap:16px;display:grid}.correction-panel .wide{grid-column:span 2}.preview-block{color:var(--text-muted);white-space:pre-wrap;box-shadow:inset 0 0 0 1px var(--outline);background:#3535345c;border-radius:20px;margin:0;padding:16px 18px;font-family:Cascadia Code,Consolas,monospace;font-size:.82rem;line-height:1.7}.jianpu-preview{gap:14px;display:grid}.jianpu-meta{color:var(--text-soft);flex-wrap:wrap;gap:10px;font-size:.86rem;display:flex}.jianpu-meta span{box-shadow:inset 0 0 0 1px var(--outline);background:#ffffff0f;border-radius:999px;padding:8px 10px}.jianpu-block{color:#24211d;white-space:pre-wrap;background:#faf7eff0;border-radius:20px;min-height:140px;margin:0;padding:20px;font-family:Cascadia Code,Consolas,monospace;font-size:1rem;line-height:1.8;overflow-x:auto;box-shadow:inset 0 0 0 1px #24211d24}.jianpu-notation-view{color:#24211d;background:#fbfaf5;border:1px solid #24211d29;border-radius:8px;padding:18px;overflow-x:auto}.jianpu-part+.jianpu-part{border-top:1px solid #24211d29;margin-top:22px;padding-top:18px}.jianpu-part-name{margin:0 0 12px;font-size:.92rem;font-weight:700}.jianpu-measures{flex-wrap:wrap;align-items:stretch;min-width:max-content;display:flex}.jianpu-measure{border-right:2px solid #403b34;align-items:center;min-height:96px;padding:14px 16px 10px;display:flex;position:relative}.jianpu-measure:first-child{border-left:2px solid #403b34}.jianpu-measure[data-implicit=true]{border-left-style:dashed}.jianpu-measure-number{color:#746d63;font-size:.68rem;line-height:1;position:absolute;top:3px;left:7px}.jianpu-event-line{align-items:center;gap:7px;display:flex}.jianpu-event-group{align-items:center;min-width:42px;display:inline-flex}.jianpu-event-group.is-chord{border-left:1px solid #24211d3d;border-right:1px solid #24211d3d;flex-direction:column;gap:0;padding:2px 0}.jianpu-event-group.is-chord .jianpu-event{grid-template-rows:9px 5px 24px 5px 5px 8px;height:58px}.jianpu-event{width:46px;min-width:46px;height:78px;color:inherit;cursor:pointer;background:0 0;border:0;border-radius:4px;grid-template-rows:12px 9px 28px 7px 9px 11px;place-items:center;padding:2px;display:grid;position:relative}.jianpu-event:hover{background:#edf2ee}.jianpu-event:focus-visible{outline-offset:1px;outline:2px solid #176d63}.jianpu-event.is-selected{background:#dcece8;box-shadow:inset 0 0 0 2px #176d63}.jianpu-ornament{color:#8a3d2f;white-space:nowrap;min-height:12px;font-size:.58rem;line-height:1}.jianpu-octave-dots{justify-content:center;align-items:center;gap:2px;min-height:7px;display:flex}.jianpu-octave-dots i{background:currentColor;border-radius:50%;width:4px;height:4px;display:block}.jianpu-glyph-row{justify-content:center;align-items:baseline;min-width:34px;height:28px;display:flex}.jianpu-accidental{min-width:9px;font-size:.78rem;font-weight:700}.jianpu-connection{color:#176d63;margin:0 1px;font-size:.78rem;font-weight:700}.jianpu-degree{font-family:Arial,Microsoft YaHei,sans-serif;font-size:1.45rem;font-weight:650;line-height:1}.jianpu-duration-dots,.jianpu-extensions{margin-left:2px;font-size:1rem;font-weight:700}.jianpu-underlines{gap:2px;min-height:7px;display:grid}.jianpu-underlines i{background:currentColor;width:20px;height:1px;display:block}.jianpu-event-context{color:#746d63;white-space:nowrap;min-height:11px;font-size:.56rem;line-height:1}.jianpu-source-details summary{width:fit-content;color:var(--text-soft);cursor:pointer;font-size:.84rem}.jianpu-source-details[open] summary{margin-bottom:10px}@media (max-width:680px){.jianpu-notation-view{padding:12px 8px}.jianpu-measures{flex-wrap:nowrap}.jianpu-measure{padding-left:10px;padding-right:10px}}.score-preview-shell{min-height:360px;max-height:640px;box-shadow:inset 0 0 0 1px var(--outline);background:#faf7efeb;border-radius:20px;overflow:auto}.score-osmd-canvas{min-width:760px;padding:18px}.score-osmd-event.is-interactive{cursor:pointer;outline:none}.score-osmd-event.is-interactive:hover,.score-osmd-event.is-interactive:focus-visible{filter:drop-shadow(0 0 4px color-mix(in srgb, var(--primary) 62%, transparent))}.score-osmd-event.is-selected{filter:drop-shadow(0 0 6px color-mix(in srgb, var(--primary) 80%, transparent))}.score-osmd-event.is-selected .score-osmd-hit-target{stroke:var(--primary);stroke-width:2px;fill:color-mix(in srgb, var(--primary) 14%, transparent)}.score-osmd-hit-target{pointer-events:all;fill:#0000;stroke:#0000;rx:4px;ry:4px}.converter-shell,.studio-split{gap:24px;display:grid}.converter-shell{grid-template-columns:minmax(0,1fr) minmax(320px,.95fr);align-items:stretch}.studio-split{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}.converter-side,.preview-side{align-content:start;gap:20px;display:grid}.preview-side{border-radius:var(--radius-md);background:linear-gradient(#0e0e0ef5,#1c1b1beb);padding:28px;box-shadow:inset 0 0 0 1px #908f9d1f}.preview-header,.queue-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.live-indicator{color:var(--text-soft);letter-spacing:.08em;text-transform:uppercase;align-items:center;gap:8px;font-size:.78rem;font-weight:800;display:inline-flex}.live-dot{background:var(--tertiary);border-radius:999px;width:8px;height:8px;box-shadow:0 0 0 6px #00daf314}.cloud-import-grid,.download-action-grid,.signal-grid{gap:12px;display:grid}.cloud-import-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.download-action-grid,.signal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cloud-import-chip{min-height:88px;color:var(--text-muted);box-shadow:inset 0 0 0 1px var(--outline);text-align:center;background:#2a2a2aeb;border-radius:24px;align-content:center;gap:8px;padding:16px;display:grid}.cloud-import-chip strong{font-size:.92rem}.cloud-import-chip span{color:var(--text-soft);font-size:.76rem}.preview-frame{gap:16px;display:grid}.numbered-preview-card{align-content:center;justify-items:start;gap:14px;min-height:132px;display:grid}.queue-latest-card{gap:18px;display:grid}.queue-summary-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.queue-summary-chip{box-shadow:inset 0 0 0 1px var(--outline);background:#35353452;border-radius:22px;gap:6px;padding:16px 18px;display:grid}.queue-summary-chip strong{font-size:1.35rem;line-height:1}.queue-summary-chip span{letter-spacing:.14em;text-transform:uppercase;color:var(--text-soft);font-size:.78rem}.preview-snapshot{box-shadow:inset 0 0 0 1px var(--outline);background:#35353442;border-radius:24px;gap:14px;padding:18px;display:grid}.result-spotlight{box-shadow:inset 0 0 0 1px var(--outline);border-radius:24px;gap:18px;padding:20px;display:grid}.result-spotlight.final{background:linear-gradient(#5fc78b24,#0e0e0ef5),radial-gradient(circle at 100% 0,#5fc78b24,#0000 42%)}.result-spotlight.draft{background:linear-gradient(#ffc45d29,#0e0e0ef5),radial-gradient(circle at 100% 0,#ffc45d29,#0000 42%)}.result-spotlight.none{background:linear-gradient(#bbc8d01f,#0e0e0ef5),radial-gradient(circle at 100% 0,#bbc8d01f,#0000 42%)}.result-outcome-card{box-shadow:inset 0 0 0 1px var(--outline);border-radius:22px;gap:12px;padding:18px;display:grid}.result-outcome-card.final{background:#5fc78b1f}.result-outcome-card.draft{background:#ffc45d24}.result-outcome-card.none{background:#35353447}.file-library-list{gap:10px;display:grid}.file-library-item{box-shadow:inset 0 0 0 1px var(--outline);background:#35353447;border-radius:20px;justify-content:space-between;align-items:center;gap:14px;padding:14px 16px;display:flex}.file-library-item strong{margin-bottom:4px;font-size:.92rem;display:block}.file-library-item span{color:var(--text-soft);font-size:.78rem}.file-dropzone{cursor:pointer;background:linear-gradient(#35353447,#1c1b1be0),radial-gradient(circle at 100% 0,#00daf31f,#0000 34%);border-radius:26px;justify-items:start;gap:12px;padding:26px;display:grid;box-shadow:inset 0 0 0 1px #00daf324}.file-dropzone:hover,.file-dropzone:focus-within{transform:translateY(-1px);box-shadow:inset 0 0 0 1px #00daf33d,0 18px 42px #00daf314}.dropzone-title{margin:0;font-size:1.02rem;font-weight:800}.dropzone-copy{color:var(--text-muted);margin:0;line-height:1.7}.selected-file{align-items:center;gap:14px;display:flex}.empty-state{color:var(--text-soft);box-shadow:inset 0 0 0 1px var(--outline);background:#35353447;border-radius:22px;padding:22px;line-height:1.7}.student-home-summary{border-left:1px solid var(--outline);color:var(--text-soft);grid-template-columns:auto 1fr;align-content:center;align-self:stretch;gap:6px 14px;padding-left:28px;display:grid}.student-home-summary strong{color:var(--tertiary);font-size:1.45rem}.student-notification-preferences{border-top:1px solid var(--outline);border-bottom:1px solid var(--outline);justify-content:space-between;align-items:center;gap:24px;padding:16px 18px;display:flex}.toggle-row{color:var(--text);cursor:pointer;align-items:center;gap:10px;display:inline-flex}.toggle-row input{block-size:18px;inline-size:18px;accent-color:var(--tertiary)}.toggle-row:has(input:disabled){cursor:wait;opacity:.65}.student-class-heading,.student-notification,.student-resource{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.student-home-columns{grid-template-columns:minmax(0,1.35fr) minmax(300px,.8fr);gap:28px;display:grid}.student-section-title{letter-spacing:0;margin:0;font-size:1rem}.student-assignment{align-items:center}.student-grade{border-top:1px solid var(--outline);color:var(--text-muted);justify-content:space-between;margin:0;padding-top:10px;display:flex}.student-grade strong{color:var(--tertiary)}.student-feedback{background:#5fc78b14;gap:6px;padding:14px 16px;display:grid;box-shadow:inset 3px 0 #5fc78ba8}.student-feedback p{color:var(--text-muted);margin:0;line-height:1.65}.student-notification,.student-resource{box-shadow:inset 0 0 0 1px var(--outline);background:#141414b3;padding:16px}.student-notification.is-read{opacity:.7}.student-resource{color:var(--text);align-items:center}button.student-resource{width:100%;font:inherit;text-align:left;cursor:pointer;border:0}button.student-resource:disabled{cursor:wait;opacity:.65}.student-resource:hover,.student-resource:focus-visible{color:var(--tertiary);box-shadow:inset 0 0 0 1px #00daf352}.student-resource span:first-child{gap:5px;display:grid}.student-resource small{color:var(--text-soft)}@media (max-width:900px){.student-home-columns{grid-template-columns:1fr}.student-home-summary{border-left:0;border-top:1px solid var(--outline);padding-top:18px;padding-left:0}}@media (max-width:640px){.student-notification-preferences{flex-direction:column;align-items:flex-start}.student-assignment,.student-notification{flex-direction:column;align-items:stretch}}.auth-copy-points,.editorial-points{gap:14px;display:grid}.editorial-point,.workflow-item{box-shadow:inset 0 0 0 1px var(--outline);background:#1c1b1bc7;border-radius:22px;align-items:flex-start;gap:14px;padding:16px 18px;display:flex}.workflow-number{width:34px;height:34px;color:var(--primary);background:#cdbdff1f;border-radius:12px;justify-content:center;align-items:center;font-weight:800;display:inline-flex}.workflow-title{margin:0;font-size:1rem;font-weight:800}.item-copy{color:var(--text-muted);margin:0;line-height:1.7}.editorial-point strong{margin-bottom:4px;font-size:.96rem;display:block}.editorial-quote{margin:0;font-size:1.45rem;line-height:1.35}.kicker-line{background:linear-gradient(90deg, var(--primary), transparent);border-radius:999px;width:92px;height:2px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (max-width:1080px){.header-inner,.footer-shell,.page-banner.split,.hero-section,.auth-layout,.access-grid,.preview-grid,.converter-shell,.studio-split,.split-layout,.feature-grid,.metric-grid,.summary-grid,.score-summary-grid,.info-grid,.workflow-grid,.queue-summary-grid,.transpose-panel,.playback-panel,.practice-controls,.loop-controls{grid-template-columns:1fr}.part-practice-row{flex-direction:column;align-items:flex-start}.correction-panel{grid-template-columns:1fr}.correction-panel .wide{grid-column:auto}.header-inner,.footer-shell{display:grid}.score-summary-grid .wide{grid-column:auto}.header-actions,.footer-links{justify-content:flex-start}}@media (max-width:820px){.container,.public-container{width:min(var(--container), calc(100% - 28px))}.app-header,.public-header{padding:14px 0}.nav-links{scrollbar-width:none;order:3;width:100%;overflow-x:auto}.nav-links::-webkit-scrollbar{display:none}.brand,.brand-copy{min-width:0}.brand-caption{display:none}.brand-title{letter-spacing:0;font-size:1.3rem}.header-inner{gap:14px}.header-actions{flex-wrap:wrap;gap:8px;width:100%}.header-actions .button{flex:150px}.public-nav{order:3;width:100%;overflow-x:auto}.app-main{padding-top:26px}.surface-panel,.glass-panel,.auth-card,.hero-preview,.page-banner,.preview-side,.preview-shell{padding:24px}.display-title{font-size:clamp(2.4rem,12vw,4rem)}.cloud-import-grid,.download-action-grid,.signal-grid,.cloud-grid{grid-template-columns:1fr}}.visual-score-editor{grid-template-columns:minmax(0,1fr) minmax(280px,360px);align-items:start;gap:16px;display:grid}.visual-score-editor>.mini-card{min-width:0}.visual-score-editor .correction-panel{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.visual-score-editor .correction-panel .field-group,.visual-score-editor .correction-panel .field-control,.visual-score-editor .correction-panel .field-select{width:100%;min-width:0}.visual-editor-toolbar{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.tool-chip{border:1px solid var(--color-border);background:var(--color-surface);min-height:34px;color:var(--color-text);font:inherit;cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:6px 10px;display:inline-flex}.tool-chip:hover,.tool-chip:focus-visible,.tool-chip.is-active{border-color:var(--color-primary);color:var(--color-primary)}.tool-chip:disabled{cursor:not-allowed;opacity:.55}.visual-score-scroll{gap:14px;min-width:0;padding-bottom:4px;display:grid;overflow-x:auto}.visual-score-part{gap:8px;min-width:0;display:grid}.visual-score-staff{border:1px solid var(--color-border);background:var(--color-surface);touch-action:none;-webkit-user-select:none;user-select:none;border-radius:8px;width:100%;min-width:720px;height:170px}.visual-measure-box{fill:color-mix(in srgb, var(--color-surface-muted) 54%, transparent);stroke:color-mix(in srgb, var(--color-border) 68%, transparent);stroke-width:1px}.visual-measure-bar{stroke:color-mix(in srgb, var(--color-text) 44%, transparent);stroke-width:1.5px}.visual-measure-label{fill:var(--color-muted);font-size:10px;font-weight:700}.visual-staff-line{stroke:color-mix(in srgb, var(--color-text) 42%, transparent);stroke-width:1px}.visual-note{cursor:grab;fill:var(--color-text);outline:none}.visual-note:hover,.visual-note:focus-visible,.visual-note.is-selected{fill:var(--color-primary)}.visual-note.is-dragging{cursor:grabbing;fill:var(--color-primary)}.visual-note.is-selected ellipse{stroke:var(--color-primary-contrast);stroke-width:3px}.visual-ledger-line,.visual-note-original{stroke:currentColor;stroke-width:1.5px}.visual-note-original{opacity:.34;stroke-dasharray:4 4}.visual-note-stem{stroke:currentColor;stroke-width:2px}.visual-note-label{fill:var(--color-muted);font-size:10px}@media (max-width:900px){.visual-score-editor{grid-template-columns:1fr}.visual-score-editor .correction-panel{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:520px){.visual-score-editor .correction-panel{grid-template-columns:1fr}}.score-comparison-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:start;gap:16px;display:grid}.score-review-view-controls{border:1px solid var(--border-subtle);background:var(--surface-sunken);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;min-height:44px;padding:6px 8px 6px 12px;display:flex}.score-review-zoom-controls{grid-template-columns:34px 64px 34px auto;align-items:center;gap:4px;display:grid}.score-review-zoom-controls button{border:1px solid var(--border-subtle);background:var(--surface-raised);min-width:34px;min-height:32px;color:var(--text-primary);cursor:pointer;font:inherit;padding:4px 8px}.score-review-zoom-controls button:disabled{cursor:not-allowed;opacity:.48}.score-review-zoom-controls output{text-align:center;color:var(--text-secondary);font-variant-numeric:tabular-nums;font-size:.82rem}.score-review-zoom-controls .score-review-reset-zoom{min-width:92px}.score-source-preview{border:1px solid var(--border-subtle);background:#fff;min-height:420px;max-height:680px;overflow:auto}.score-review-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.score-review-toolbar .button.is-active{color:#0d6f78;border-color:#0d6f78;box-shadow:inset 0 0 0 1px #0d6f78}.score-page-tabs{border:1px solid var(--border-subtle);background:var(--surface-sunken);gap:2px;padding:2px;display:flex;overflow-x:auto}.score-page-tabs button{min-height:32px;color:var(--text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:0;padding:5px 10px}.score-page-tabs button.is-active{background:var(--surface-raised);color:var(--text-primary);box-shadow:inset 0 0 0 1px var(--border-strong)}.score-source-image-stage{background:#fff;width:100%;position:relative}.score-geometry-warning{color:#7f1d1d;background:#fff7ed;border-bottom:1px solid #c5372d;margin:0;padding:10px 12px;font-size:.82rem;line-height:1.5}.score-source-preview .score-source-image-stage img{object-fit:initial;width:100%;height:auto}.score-source-symbol-layer{pointer-events:none;position:absolute;inset:0}.score-source-symbol-layer button{cursor:pointer;pointer-events:auto;background:#e24e3f1f;border:2px solid #c5372dd1;min-width:5px;min-height:5px;padding:0;position:absolute}.score-source-symbol-layer button:hover,.score-source-symbol-layer button.is-active{z-index:2;background:#0d6f7838;border-color:#0d6f78;box-shadow:0 0 0 2px #ffffffe6}.score-source-preview iframe,.score-source-preview img{object-fit:contain;border:0;width:100%;height:560px;display:block}.score-diagnostic-summary{color:var(--text-secondary);flex-wrap:wrap;gap:16px;font-size:.82rem;display:flex}.score-diagnostic-list{gap:6px;max-height:260px;display:grid;overflow:auto}.score-diagnostic-item{border:1px solid var(--border-subtle);background:var(--surface-sunken);color:inherit;text-align:left;cursor:pointer;grid-template-columns:minmax(0,1fr) auto;gap:3px 10px;padding:9px 10px;display:grid}.score-diagnostic-item.has-issues{border-color:#d6584a8c}.score-diagnostic-item.is-active{border-color:#0d6f78;box-shadow:inset 3px 0 #0d6f78}.score-diagnostic-item small{color:var(--text-secondary);grid-column:1/-1}@media (max-width:900px){.score-comparison-grid{grid-template-columns:1fr}.score-source-preview iframe,.score-source-preview img{height:440px}}.vexflow-score-surface{border:1px solid var(--line-subtle,#d8dee8);cursor:crosshair;touch-action:none;-webkit-user-select:none;user-select:none;background:#dfe4ea;border-radius:6px;min-height:180px;position:relative;overflow:auto}.vexflow-system-canvas>svg{max-width:none;display:block}.vexflow-canvas{min-width:100%;position:relative}.vexflow-page-canvas{box-sizing:border-box;pointer-events:none;background:#fff;border:1px solid #cbd2dc;position:absolute;overflow:hidden}.vexflow-system-canvas{pointer-events:none;position:absolute;overflow:hidden}.vexflow-page-number{color:#6b7280;text-align:center;font-family:Arial,sans-serif;font-size:10px;line-height:1;position:absolute;bottom:8px;left:0;right:0}.vexflow-event-hit-layer{z-index:1;pointer-events:none;position:absolute;inset:0}.vexflow-event-hit-target{cursor:grab;pointer-events:auto;background:0 0;border:0;border-radius:2px;min-width:0;min-height:0;padding:0;position:absolute}.vexflow-event-hit-target:focus-visible{outline-offset:2px;background:#0f766e1a;outline:2px solid #0f766e}.vexflow-event-hit-target[aria-pressed=true]{box-shadow:inset 0 0 0 1px #0f766e8c}.vexflow-rhythm-warning{z-index:4;color:#7f1d1d;min-height:34px;font:inherit;cursor:pointer;background:#fff7ed;border:1px solid #f59e0b;border-radius:6px;padding:7px 10px;font-size:.78rem;font-weight:700;position:absolute;top:10px;right:10px;box-shadow:0 2px 8px #0f172a1f}.vexflow-rhythm-warning:hover,.vexflow-rhythm-warning:focus-visible{color:#7c2d12;outline-offset:1px;border-color:#c2410c;outline:2px solid #fed7aa}.vexflow-selection-box{z-index:2;pointer-events:none;background:#0f766e1f;border:1px solid #0f766e;position:absolute}.vexflow-drag-indicator{z-index:3;pointer-events:none;background:#ffffffd1;border:2px solid #0f766e;border-radius:50%;width:16px;height:16px;position:absolute;box-shadow:0 2px 8px #0f172a33}.feature-product-screenshot{object-fit:cover;object-position:center;border:1px solid var(--line-subtle,#d8dee8);border-radius:6px;width:100%;height:auto;max-height:720px;display:block}.feature-example-code{overflow-wrap:anywhere;white-space:pre-wrap;font-size:.95rem;line-height:1.6;display:block}.audio-waveform-player{width:100%}.audio-waveform-canvas{border:1px solid var(--line-subtle,#d8dee8);cursor:crosshair;background:#f8fafc;border-radius:6px;width:100%;height:104px;display:block}.analytics-consent{z-index:50;border:1px solid var(--border-subtle);background:var(--surface-raised);width:min(440px,100vw - 32px);box-shadow:var(--shadow-float);color:var(--text-primary);border-radius:8px;padding:18px;position:fixed;bottom:20px;right:20px}.analytics-consent p{margin:0 0 14px;line-height:1.55}@media (max-width:1500px){.public-header .header-inner{grid-template-columns:minmax(0,1fr) auto;display:grid}.public-header .public-nav{grid-area:2/1/auto/-1;width:100%;overflow-x:auto}.public-header .header-actions{justify-content:flex-end}}.footer-locale{display:none}@media (max-width:820px){.public-header .locale-switcher{display:none}.public-header .header-actions{width:auto}.public-header .public-button{padding-inline:14px}.public-main{padding-top:24px}.public-header .public-nav{scrollbar-width:none}.public-header .public-nav::-webkit-scrollbar{display:none}.hero-section{gap:14px}.hero-copy>.button-row{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.hero-copy>.button-row .public-button{justify-content:center;padding-inline:10px}.hero-section .preview-shell{height:84px;padding:10px;display:block;overflow:hidden}.hero-section .preview-shell>.button-row,.hero-section .preview-shell>.helper-copy{display:none}.hero-section .preview-shell .feature-product-screenshot{object-fit:cover;object-position:center;height:64px}.footer-locale{display:block}}