:root{color:#232629;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#f5f6f0;font-family:system-ui,sans-serif;line-height:1.5}*{box-sizing:border-box}html{min-height:100%}body{min-height:100%;margin:0}button,textarea{font:inherit}button,a{color:inherit}a{text-decoration:none}code,pre,textarea{font-family:ui-monospace,monospace}main{width:min(1440px,100vw - 32px);margin:0 auto;padding:18px 0 48px}.top-nav{border-bottom:1px solid #d9dbd4;justify-content:space-between;align-items:center;gap:24px;min-height:58px;display:flex}.brand-mark{color:#163f45;letter-spacing:0;align-items:center;gap:9px;font-size:1.05rem;font-weight:800;display:inline-flex}.brand-mark img{flex:none;display:block}.top-nav nav{gap:8px;display:flex}.top-nav nav a,.primary-link,.secondary-link,.toolbar-actions button,.book-toc button{background:#fff;border:1px solid #cfd3ca;border-radius:6px}.top-nav nav a{padding:8px 12px}.top-nav nav a.active{color:#174f54;border-color:#2f6f73}.hero{grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);align-items:stretch;gap:32px;min-height:calc(100vh - 124px);padding:48px 0 24px;display:grid}.hero-copy{flex-direction:column;justify-content:center;max-width:820px;display:flex}.eyebrow{color:#2f6f73;letter-spacing:.12em;text-transform:uppercase;font-size:.78rem;font-weight:800}h1,h2,h3{margin:0;line-height:1.15}.hero h1{max-width:900px;margin-top:14px;font-size:clamp(2.6rem,5vw,5.6rem)}.hero p{color:#5c6468;max-width:760px;font-size:1.05rem}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.primary-link,.secondary-link,.toolbar-actions button{cursor:pointer;padding:10px 14px}.primary-link{color:#fff;background:#2f6f73;border-color:#2f6f73;font-weight:700}.secondary-link{color:#174f54;font-weight:700}.hero-summary{align-content:center;gap:14px;display:grid}.hero-summary section,.score-card,.score-section,.book-toc,.markdown-panel{background:#fff;border:1px solid #d9dbd4;border-radius:8px}.hero-summary section{padding:22px}.hero-summary h2{font-size:1.1rem}.hero-summary p{color:#62696c;margin:8px 0 0}.editor-container{border:1px solid #cfd3ca;border-radius:8px;flex-direction:column;gap:0;width:100%;min-width:0;margin:16px 0;display:flex;overflow:hidden}.editor-header{justify-content:space-between;align-items:center;padding:9px 12px;display:flex}.editor-header-left{align-items:center;gap:12px;display:flex}.editor-header-left h2{margin:0;font-size:1rem}.editor-header-right{align-items:center;gap:8px;display:flex}.editor-body{grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-areas:"source render""source-diagnostics render-diagnostics";align-items:stretch;gap:0 10px;min-width:0;padding:0 10px 10px;display:grid}.editor-body>.source-editor{grid-area:source}.editor-body>.score-card{grid-area:render}.converter-dialog-overlay{z-index:20;background:#1f232661;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.converter-dialog{background:#fffef9;border:1px solid #cfd3ca;border-radius:6px;flex-direction:column;width:min(920px,100%);height:80vh;display:flex;overflow:hidden;box-shadow:0 20px 48px #1f23263d}.converter-dialog-header,.converter-dialog-actions{flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;display:flex}.converter-dialog-header{border-bottom:1px solid #d9e3df}.converter-dialog-header h2{margin:0;font-size:1.15rem}.converter-dialog-actions{border-top:1px solid #d9e3df;justify-content:flex-end}.converter-result{resize:none;flex:1;min-height:360px}.format-switch{border:1px solid #b8cfca;border-radius:4px;display:flex;overflow:hidden}.format-switch button{color:#285b5c;cursor:pointer;background:#fffef9;border:0;border-right:1px solid #b8cfca;min-height:30px;padding:0 10px}.format-switch button:last-child{border-right:0}.format-switch button.is-active{color:#fff;background:#176e6e}.embedded-editor{width:100%;min-width:0;margin-top:18px}.embedded-editor-body{grid-template-areas:"render source""render-diagnostics source-diagnostics";padding:0}.pane-toolbar{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:14px;display:flex}.pane-toolbar h2{margin-top:4px;font-size:1.25rem}.toolbar-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.toolbar-actions button:hover{border-color:#2f6f73}.source-editor{background:#fbfcf8;border:1px solid #cfd3ca;border-radius:6px;flex:auto;width:100%;min-height:0;display:flex;overflow:hidden}textarea{tab-size:2;min-height:unset;resize:none;color:#1f2326;white-space:pre;background:0 0;border:0;margin:0;padding:14px;font-size:.95rem;line-height:1.65}.source-editor textarea{color:#1f2326;flex:auto;width:0;min-width:0;height:100%;min-height:0;display:block;overflow:auto}textarea::selection{background:#cfe8e5}.embedded-editor .source-editor,.embedded-editor textarea{min-height:unset}.diagnostics{overflow-wrap:anywhere;color:#9a3a25;margin:12px 0 0;padding-left:20px}.editor-source-diagnostics{grid-area:source-diagnostics}.editor-render-diagnostics{grid-area:render-diagnostics}.score-card{padding:14px;overflow:hidden}.score-card.compact{padding:10px}.score-library{gap:20px;display:grid}.library-toolbar{justify-content:space-between;align-items:end;gap:20px;padding:28px 20px 4px;display:flex}.library-toolbar h1{margin-top:4px;font-size:1.6rem}.score-search{width:min(440px,100%)}.score-search input{color:#1f2326;background:#fffef9;border:1px solid #b8cfca;border-radius:4px;width:100%;min-height:38px;padding:7px 10px}.score-search input:focus{outline-offset:1px;outline:2px solid #1683ff}.search-empty{color:#5c6468;margin:0;padding:20px}.score-reader-actions{justify-content:flex-end;align-items:center;gap:8px;margin:16px 0 8px;display:flex}.score-reader-actions .action-button.is-disabled{color:#9aa2a6;cursor:default;background:#f4f5f1;border-color:#d9dbd4;align-items:center;display:inline-flex}.score-reader{min-height:360px}.score-reader-diagnostics{margin-bottom:16px}.score-section{padding:20px}.section-heading{margin-bottom:14px}.section-heading h2{margin-top:4px;font-size:1.35rem}.score-list{grid-template-columns:repeat(auto-fill,minmax(260px,280px));justify-content:start;gap:12px;display:grid}.score-list .score-card{flex-direction:column;justify-content:space-between;max-width:280px;height:160px;padding:16px;display:flex;overflow:hidden}.score-list .score-card:hover{border-color:#2f6f73}.score-list .score-card.is-invalid-score{background:#fff8f3;border-color:#c05b35}.score-list .score-card.is-invalid-score:hover{background:#fff1e8;border-color:#a33b24}.score-list .score-card>div:first-child{flex-direction:column;flex:1;justify-content:center;display:flex;overflow:hidden}.score-list h3{text-align:center;text-overflow:ellipsis;white-space:nowrap;font-size:1.12rem;overflow:hidden}.score-list p{color:#5c6468;text-align:center;margin:8px 0 0}.score-notation-tags{justify-content:center;gap:4px;margin-top:12px;display:flex;overflow:hidden}.score-card-footer{justify-content:space-between;align-items:center;gap:8px;display:flex}.score-composer{color:#174f54;font-weight:700}.score-tags{flex-shrink:0;gap:4px;display:flex}.score-tag{color:#fff;background:#2f6f73;border-radius:10px;padding:2px 7px;font-size:.72rem;font-weight:600;display:inline-block}.score-notation-tags .score-tag{text-overflow:ellipsis;white-space:nowrap;color:#285b5c;background:#dcebe6;flex:0 auto;min-width:0;overflow:hidden}.score-paper{min-height:unset;background:#fffef9;border-radius:6px;overflow:auto}.score-paper[aria-busy=true]{min-height:1.5rem}.score-paper[aria-busy=true]:empty{color:#59616d;place-items:center;font-size:.9rem;line-height:1.5rem;display:grid}.score-paper[data-render-phase=loading-library]:empty:before{content:"正在加载渲染库"}.score-paper[data-render-phase=waiting-layout]:empty:before{content:"等待排版乐谱"}.score-paper[data-render-phase=layout]:empty:before{content:"正在排版乐谱"}.score-title-block{text-align:center;background:#fffef9;padding:28px 28px 8px}.score-title-block h1{color:#20242b;margin:0;font-family:ui-serif,serif;font-size:2.25rem;font-weight:700;line-height:1.2}.score-subtitle{color:#59616d;margin:8px 0 0;font-family:ui-serif,serif;font-size:1.1rem;line-height:1.35}.score-header-details{color:#30363e;gap:16px;margin-top:12px;font-family:system-ui,sans-serif;font-size:1rem;line-height:1.3;display:flex}.score-header-column{flex:auto;align-content:start;gap:6px;min-width:0;display:grid}.score-header-item{overflow-wrap:anywhere;margin:0}.score-header-column-left{text-align:left}.score-header-column-right{text-align:right}.score-card.compact .score-title-block{padding:18px 18px 2px}.score-card.compact .score-title-block h1{font-size:1.5rem}.score-card.compact .score-subtitle,.score-card.compact .score-header-details{font-size:.9rem}.score-card.compact .score-header-details{margin-top:8px}.score-paper svg{width:100%;max-width:100%;height:auto;display:block}.score-paper svg .m3n-accompaniment{display:none}.score-paper .measure-playback-highlight{pointer-events:none;display:none}.score-paper .is-playing-measure>.measure-playback-highlight{fill:#f0c66b;opacity:.18;display:block}.score-paper .is-cursor-active,.score-paper .is-cursor-active *{fill:#1683ff;stroke:#1683ff}.score-paper .is-cursor-active .stem path{stroke:#1683ff!important}.score-paper .is-playing,.score-paper .is-playing *{fill:#d95f2a;stroke:#d95f2a}.score-paper .is-playing.stem path,.score-paper .is-playing .stem path{stroke:#d95f2a!important}.audio-controls{grid-template-columns:auto minmax(120px,1fr) minmax(240px,2fr) auto;align-items:center;gap:18px;min-height:44px;margin-bottom:12px;padding:6px 8px;display:grid}.action-button{color:#285b5c;cursor:pointer;box-sizing:border-box;background:#fffef9;border:1px solid #b8cfca;border-radius:4px;min-height:36px;padding:0 14px;font-size:13px;font-weight:700;line-height:1}a.action-button{align-items:center;text-decoration:none;display:inline-flex}.action-button:hover{background:#dcebe6;border-color:#2f6f73}.export-dialog{color:#1f2326;background:#fffef9;border:1px solid #cfd3ca;border-radius:6px;width:min(1240px,100vw - 32px);height:min(860px,100vh - 32px);padding:0;box-shadow:0 20px 48px #1f23263d}.export-dialog::backdrop{background:#1f232661}.export-dialog form{grid-template-rows:auto minmax(0,1fr) auto;height:100%;display:grid}.export-header{border-bottom:1px solid #d9e3df;justify-content:space-between;align-items:center;padding:18px 20px;display:flex}.export-dialog h2{margin:0;font-size:1.15rem}.export-header span{color:#5c6468;font-size:13px}.export-content{grid-template-columns:220px minmax(0,1fr);min-height:0;display:grid}.export-settings{border-right:1px solid #d9e3df;align-content:start;gap:20px;padding:20px;display:grid}.export-dialog fieldset{border:0;gap:16px;margin:0;padding:0;display:grid}.export-dialog legend{color:#5c6468;margin-bottom:8px;font-size:13px}.export-dialog label{color:#285b5c;align-items:center;gap:6px;font-size:14px;display:inline-flex}.export-field input{color:#1f2326;background:#fff;border:1px solid #b8cfca;border-radius:4px;width:90px;min-height:32px;padding:4px 7px}.export-field span{color:#5c6468}.export-actions{border-top:1px solid #d9e3df;justify-content:flex-end;gap:8px;padding:14px 20px;display:flex}.export-preview{background:#f0f3ee;min-width:0;min-height:0;padding:16px;overflow:auto}.export-preview-paper{min-width:100%}.export-preview svg{background:#fffef9;width:100%;min-width:0;height:auto;display:block;box-shadow:0 1px 3px #1f23261f}.export-actions button{color:#285b5c;cursor:pointer;background:#fffef9;border:1px solid #b8cfca;border-radius:4px;min-height:34px;padding:0 12px}.export-actions button[type=submit]{color:#fff;background:#176e6e;border-color:#176e6e}.export-actions button:disabled{cursor:wait;opacity:.6}.playback-toggle{color:#fff;cursor:pointer;background:#176e6e;border:1px solid #176e6e;border-radius:4px;place-items:center;width:32px;height:32px;display:inline-grid}.playback-icon{display:block}.playback-icon.play{border-top:7px solid #0000;border-bottom:7px solid #0000;border-left:10px solid;width:0;height:0;margin-left:2px}.playback-icon.pause{border-left:3px solid;border-right:3px solid;width:11px;height:14px}.playback-toggle:hover{background:#125a5b;border-color:#125a5b}.playback-toggle:disabled{cursor:wait;opacity:.6}.playback-speed{grid-template-columns:auto minmax(72px,1fr) auto;align-items:center;gap:8px;min-width:0;display:grid}.playback-speed span,.playback-progress span{color:#285b5c;white-space:nowrap;font-size:12px}.playback-speed input,.playback-progress input{appearance:none;accent-color:#1683ff;cursor:pointer;background:0 0;border-radius:2px;width:100%;height:4px;margin:0}.playback-speed input::-webkit-slider-runnable-track{background:#d7e2dd;border-radius:2px;height:4px}.playback-progress input::-webkit-slider-runnable-track{background:#d7e2dd;border-radius:2px;height:4px}.playback-speed input::-moz-range-track{background:#d7e2dd;border-radius:2px;height:4px}.playback-progress input::-moz-range-track{background:#d7e2dd;border-radius:2px;height:4px}.playback-speed input::-webkit-slider-thumb{appearance:none;box-sizing:border-box;background:#1683ff;border:2px solid #fffef9;border-radius:50%;width:14px;height:14px;margin-top:-5px;box-shadow:0 0 0 1px #1683ff}.playback-progress input::-webkit-slider-thumb{appearance:none;box-sizing:border-box;background:#1683ff;border:2px solid #fffef9;border-radius:50%;width:14px;height:14px;margin-top:-5px;box-shadow:0 0 0 1px #1683ff}.playback-speed input::-moz-range-thumb{box-sizing:border-box;background:#1683ff;border:2px solid #fffef9;border-radius:50%;width:14px;height:14px;box-shadow:0 0 0 1px #1683ff}.playback-progress input::-moz-range-thumb{box-sizing:border-box;background:#1683ff;border:2px solid #fffef9;border-radius:50%;width:14px;height:14px;box-shadow:0 0 0 1px #1683ff}.playback-speed output{color:#285b5c;font-variant-numeric:tabular-nums;text-align:right;min-width:34px;font-size:12px}.playback-progress{grid-template-columns:auto minmax(110px,1fr) auto;align-items:center;gap:8px;min-width:0;display:grid}.playback-progress output{color:#285b5c;font-variant-numeric:tabular-nums;text-align:right;min-width:30px;font-size:12px}@media (width<=720px){.editor-body{grid-template-columns:1fr}.library-toolbar{align-items:stretch;padding-top:20px;display:grid}.score-search{width:100%}.audio-controls{grid-template-columns:auto minmax(0,1fr) auto;gap:10px 14px}.playback-progress{grid-column:1/-1}.playback-speed input,.playback-progress input{touch-action:none;height:32px}.playback-speed input::-webkit-slider-thumb{width:18px;height:18px;margin-top:-7px}.playback-progress input::-webkit-slider-thumb{width:18px;height:18px;margin-top:-7px}.playback-speed input::-moz-range-thumb{width:16px;height:16px}.playback-progress input::-moz-range-thumb{width:16px;height:16px}.export-dialog{width:calc(100vw - 16px);height:calc(100vh - 16px)}.export-content{grid-template-rows:auto minmax(0,1fr);grid-template-columns:1fr}.export-settings{border-bottom:1px solid #d9e3df;border-right:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:14px 16px}}.render-message{color:#9a3a25}.markdown-panel pre{color:#f6f1e8;background:#202428;border-radius:6px;padding:14px;overflow:auto}.book-layout{grid-template-columns:minmax(220px,270px) minmax(0,1fr);align-items:start;gap:18px;margin-top:18px;display:grid}.book-toc{max-height:calc(100vh - 36px);padding:16px;position:sticky;top:18px;overflow:auto}.doc-toc-toggle{background:#d95f2ad1;display:none}.toc-tree{gap:14px;margin-top:12px;display:grid}.toc-group{gap:6px;display:grid}.book-toc button{text-align:left;cursor:pointer;gap:4px;width:100%;display:grid}.toc-root{padding:10px}.toc-root:hover{border-color:#2f6f73}.toc-group.active .toc-root{color:#174f54;border-color:#2f6f73}.toc-root span{color:#697276;font-size:.82rem}.toc-children{border-left:1px solid #d9dbd4;gap:4px;margin-left:10px;padding-left:10px;display:grid}.toc-section{gap:4px;display:grid}.toc-section-heading{color:#42494c;background:0 0;border-color:#0000;padding:7px 8px;font-size:.94rem}.toc-section-heading:hover{background:#fff;border-color:#cfd3ca}.toc-section.active .toc-section-heading{color:#174f54;background:#eef7f6;border-color:#2f6f73;font-weight:700}.toc-subsections{border-left:1px solid #d9dbd4;gap:4px;margin-left:10px;padding-left:10px;display:grid}.toc-leaf{color:#42494c;background:0 0;border-color:#0000;padding:6px 8px;font-size:.92rem}.toc-leaf:hover{background:#fff;border-color:#cfd3ca}.toc-leaf.active{color:#174f54;background:#eef7f6;border-color:#2f6f73;font-weight:700}.markdown-panel{padding:28px;overflow:hidden}.markdown-panel h1,.markdown-panel h2,.markdown-panel h3,.markdown-panel h4{margin-top:1.4em}.markdown-panel h1:first-child,.markdown-panel h2:first-child,.markdown-panel h3:first-child{margin-top:0}.markdown-panel p,.markdown-panel li{color:#42494c}.markdown-panel a{color:#1683ff;text-decoration:underline}.markdown-panel a:hover{color:#0d6efd}.markdown-panel table{border-collapse:collapse;width:100%;margin:16px 0}.markdown-panel th,.markdown-panel td{text-align:left;border:1px solid #d9dbd4;padding:8px 10px}.markdown-panel blockquote{background:#f0f5f2;border-left:4px solid #2f6f73;margin:16px 0;padding:10px 14px}.doc-toc-toggle{z-index:21;color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid #ffffff94;border-radius:50%;place-items:center;width:44px;height:44px;font-size:1.2rem;font-weight:700;position:fixed;bottom:16px;right:16px}@media (width<=720px){.book-layout{margin-top:0;display:block}.book-toc{z-index:20;width:min(320px,100vw - 32px);max-height:calc(100vh - 148px);display:none;position:fixed;bottom:72px;right:16px;box-shadow:0 12px 28px #1f23262e}.book-toc.is-open{display:block}.doc-toc-toggle{display:grid}}@media (width<=1100px){.hero,.editor-body{grid-template-columns:1fr}.editor-body{grid-template-areas:"source""source-diagnostics""render""render-diagnostics"}.embedded-editor-body{grid-template-areas:"render""render-diagnostics""source""source-diagnostics"}}@media (orientation:portrait){.editor-body{align-items:start}.editor-body>.source-editor{width:100%;max-height:calc(133.333vw - 85.3333px)}.editor-body>.score-card{margin-top:10px}.source-editor{flex:0 auto;max-height:calc(133.333vw - 85.3333px)}.source-editor textarea{overflow-wrap:anywhere;white-space:pre-wrap;width:100%;height:auto;max-height:calc(133.333vw - 85.3333px);overflow:hidden auto}}@media (width<=720px){main{width:min(100vw - 18px,1440px)}.top-nav,.pane-toolbar{flex-direction:column;align-items:stretch}.top-nav nav,.toolbar-actions,.score-reader-actions{justify-content:flex-start}.hero{padding-top:28px}.markdown-panel{padding:14px}.editor-header{grid-template-columns:minmax(0,1fr) auto;gap:8px;display:grid}.editor-header-right{margin-left:0}.editor-body{padding:8px}}.page-status{color:#42494c;text-align:center;place-content:center;justify-items:center;gap:12px;min-height:100vh;padding:24px;display:grid}.page-error h1,.page-error p{margin:0}
