:root{color-scheme:light;--bg:#E9E9EE;--surface:#FBFBFD;--surface-2:#F1F1F6;--ink:#14151F;--ink-2:#4A4C60;--muted:#7B7D92;--line:#D5D6E0;--line-strong:#BEC0D0;--accent:#2B3FC4;--accent-ink:#FFFFFF;--accent-soft:#E1E4F8;--warm:#A9452A;--warm-soft:#F5E3DC;--warm-ink:#FFFFFF;--new-bg:#DDF3EA;--new-line:#B3DDCB;--new-ink:#146447;--roll-bg:#FBE9C6;--roll-line:#EDC97F;--roll-ink:#7F5300;--transport-bg:#E6E9FA;--transport-line:#CDD2F2;--shadow:0 1px 2px rgba(20,21,31,.06), 0 14px 32px -18px 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rgba(0,0,0,.9);--tip-bg:#2E3242;--tip-ink:#ECEDF4;--tip-line:#414659;--tip-term:#A9B5FF}:root[data-app-theme=light]{color-scheme:light;--bg:#E9E9EE;--surface:#FBFBFD;--surface-2:#F1F1F6;--ink:#14151F;--ink-2:#4A4C60;--muted:#7B7D92;--line:#D5D6E0;--line-strong:#BEC0D0;--accent:#2B3FC4;--accent-ink:#FFFFFF;--accent-soft:#E1E4F8;--warm:#A9452A;--warm-soft:#F5E3DC;--warm-ink:#FFFFFF;--new-bg:#DDF3EA;--new-line:#B3DDCB;--new-ink:#146447;--roll-bg:#FBE9C6;--roll-line:#EDC97F;--roll-ink:#7F5300;--transport-bg:#E6E9FA;--transport-line:#CDD2F2;--shadow:0 1px 2px rgba(20,21,31,.06), 0 14px 32px -18px rgba(20,21,31,.3);--tip-bg:#1B1D2A;--tip-ink:#F1F2F8;--tip-line:#1B1D2A;--tip-term:#A9B5FF}:root[data-app-theme=dark]{color-scheme:dark;--bg:#101119;--surface:#191B25;--surface-2:#212431;--ink:#ECEDF4;--ink-2:#B7B9CA;--muted:#878A9E;--line:#2C2F3D;--line-strong:#3D4152;--accent:#8296FF;--accent-ink:#0E0F1B;--accent-soft:#242841;--warm:#E5866A;--warm-soft:#3A2620;--warm-ink:#1A0E0A;--new-bg:#1E3A32;--new-line:#2F5A4D;--new-ink:#8EE0C0;--roll-bg:#3B2F16;--roll-line:#6E5525;--roll-ink:#F4C46A;--transport-bg:#1E2233;--transport-line:#2C3350;--shadow:0 1px 2px rgba(0,0,0,.45), 0 18px 40px -22px rgba(0,0,0,.9);--tip-bg:#2E3242;--tip-ink:#ECEDF4;--tip-line:#414659;--tip-term:#A9B5FF}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);font-family:Archivo,Helvetica Neue,system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}.wrap{padding:var(--gap) clamp(14px,2.2vw,32px) 44px;padding-left:max(clamp(14px,2.2vw,32px),env(safe-area-inset-left,0px));padding-right:max(clamp(14px,2.2vw,32px),env(safe-area-inset-right,0px));display:flex;flex-direction:column;gap:var(--gap)}.masthead{display:grid;grid-template-columns:minmax(0,1fr) clamp(262px,27vw,350px);align-items:center;gap:10px var(--gap)}.masthead-main{display:flex;align-items:center;flex-wrap:wrap;gap:10px 24px;min-width:0}.masthead-main>.transport{margin-left:auto}@media(max-width:900px){.masthead{grid-template-columns:minmax(0,1fr)}.masthead-tools{justify-content:flex-start}}.masthead-tools{display:flex;align-items:center;justify-content:flex-end;gap:10px 8px;flex-wrap:wrap}.rc600{display:flex;align-items:center;gap:8px;flex:1 1 160px;min-width:0;margin-right:8px;padding:6px;background:var(--transport-bg);border:1px solid var(--transport-line);border-radius:14px}.rc600 .chip{height:38px;padding:0 13px;display:inline-flex;align-items:center}.rc600 .menu-chip{flex:1 1 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var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:0}.stage-inner{padding:24px 28px 28px;display:flex;flex-direction:column;min-height:384px;justify-content:flex-start}.signature{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:11px;font-family:IBM Plex Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.sig-notes{letter-spacing:.14em}.ending-tag{margin:10px 0 0;font-size:.68rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);cursor:default}.keyline{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.key-name{font-family:Fraunces,Georgia,Times New Roman,serif;font-variation-settings:"opsz" 144;font-weight:900;font-size:clamp(1.9rem,5.4vw,2.9rem);line-height:.98;letter-spacing:-.025em;margin:0}.key-mode{font-family:Archivo,system-ui,sans-serif;font-weight:500;font-size:.82rem;letter-spacing:.13em;text-transform:uppercase;color:var(--accent)}.rule{height:1px;margin-top:18px;background:var(--line)}.changes{display:grid;gap:0;flex:1 1 auto;grid-auto-rows:auto auto auto auto auto 1fr}.changes[data-cols="2"]{grid-template-columns:repeat(2,minmax(0,1fr))}.changes[data-cols="3"]{grid-template-columns:repeat(3,minmax(0,1fr))}.changes[data-cols="4"]{grid-template-columns:repeat(4,minmax(0,1fr))}.cell{min-width:0;padding:16px 16px 14px;border-left:1px solid var(--line);display:grid;grid-row:span 6;grid-template-rows:subgrid;row-gap:3px}.changes[data-cols="2"] .cell:nth-child(odd),.changes[data-cols="3"] .cell:nth-child(3n+1),.changes[data-cols="4"] .cell:nth-child(4n+1){border-left:0}.changes[data-cols="4"] .cell:nth-child(n+5){border-top:1px solid var(--line)}.cell-head{display:flex;align-items:center;gap:7px;font-family:IBM Plex Mono,ui-monospace,Menlo,monospace;font-size:.68rem;letter-spacing:.1em;color:var(--muted)}.fn{font-family:Archivo,system-ui,sans-serif;font-size:.62rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;white-space:nowrap;color:var(--ink-2)}.cell-sym{font-family:IBM Plex Sans Condensed,Archivo,system-ui,sans-serif;font-weight:700;line-height:1.05;letter-spacing:-.005em;color:var(--ink);margin-top:7px;overflow-wrap:anywhere}.cell-sym[data-len="4"]{font-size:calc(clamp(2.15rem,5.8vw,3.25rem) * var(--sym-scale,1))}.cell-sym[data-len="5"]{font-size:calc(clamp(1.8rem,4.85vw,2.7rem) * var(--sym-scale,1))}.cell-sym[data-len="6"]{font-size:calc(clamp(1.55rem,4.15vw,2.3rem) * var(--sym-scale,1))}.cell-sym[data-len="7"]{font-size:calc(clamp(1.3rem,3.5vw,1.95rem) * var(--sym-scale,1))}.cell-sym[data-len="8"]{font-size:calc(clamp(1.05rem,2.8vw,1.55rem) * var(--sym-scale,1))}@media(min-width:1300px){.changes{container-type:inline-size}.cell-sym[data-len="4"]{font-size:calc(clamp(3.25rem,6.2cqi,4.3rem) * var(--sym-scale,1))}.cell-sym[data-len="5"]{font-size:calc(clamp(2.7rem,5.15cqi,3.6rem) * var(--sym-scale,1))}.cell-sym[data-len="6"]{font-size:calc(clamp(2.3rem,4.4cqi,3.05rem) * var(--sym-scale,1))}.cell-sym[data-len="7"]{font-size:calc(clamp(1.95rem,3.75cqi,2.6rem) * var(--sym-scale,1))}.cell-sym[data-len="8"]{font-size:calc(clamp(1.55rem,3cqi,2.05rem) * var(--sym-scale,1))}}.cell-num{display:flex;align-items:flex-start;font-family:Fraunces,Georgia,Times New Roman,serif;font-variation-settings:"opsz" 40;font-weight:600;font-size:clamp(.95rem,2.3vw,1.2rem);line-height:1.1;letter-spacing:-.01em;color:var(--ink-2);margin-top:5px}.cell-mode{align-self:center;margin-left:9px;font-family:Archivo,system-ui,sans-serif;font-size:.6rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);white-space:nowrap}.cell-num .sup{font-size:.62em;font-weight:600;letter-spacing:0;margin-top:.05em;margin-left:.06em;color:var(--muted)}.cell.is-altered .cell-num .sup,.cell.is-borrowed .fn{color:var(--warm)}.cell.is-split .chord-line,.cell.is-split .cell-num,.cell.is-split .cell-tones{display:flex;gap:0}.cell.is-split .chord-line{align-items:flex-end}.line-part,.cell-part{flex:1 1 0;min-width:0}.line-part:first-child,.cell-part:first-child{padding-right:12px}.line-part:last-child,.cell-part:last-child{padding-left:12px}.line-part{display:flex;align-items:center;gap:4px}.cell-part{display:flex;flex-direction:column;align-items:flex-start}.part-num{display:flex;align-items:flex-start}.cell-part .cell-mode{margin:2px 0 0;align-self:flex-start;white-space:normal}.cell-part.is-borrowed .part-num{color:var(--warm)}.cell.is-split{grid-template-columns:minmax(0,1fr)}.cell.is-split>.cell-head{grid-area:1 / 1}.cell.is-split>.chord-line{grid-area:2 / 1}.cell.is-split>.cell-num{grid-area:3 / 1}.cell.is-split>.cell-tones{grid-area:4 / 1}.cell.is-split>.cell-voicing{grid-area:5 / 1}.cell.is-split:after{content:"";grid-area:2 / 1 / 5 / 2;justify-self:center;width:1px;background:repeating-linear-gradient(to bottom,var(--line-strong) 0 3px,transparent 3px 6px)}@media(max-width:620px){.line-part:first-child,.cell-part:first-child{padding-right:6px}.line-part:last-child,.cell-part:last-child{padding-left:6px}}.stage.hide-fn .cell .fn{visibility:hidden}.stage.hide-mode .cell-mode,.stage.hide-tones .cell-tones,.stage.hide-voicing .cell-voicing{display:none}.cell-tones{font-family:IBM Plex Mono,ui-monospace,Menlo,monospace;margin-top:6px;font-size:.72rem;letter-spacing:.1em;color:var(--muted);line-height:1.35}@media(max-width:620px){.changes[data-cols]{grid-template-columns:repeat(2,minmax(0,1fr))}.changes[data-cols] .cell{border-left:1px solid var(--line)}.changes[data-cols] .cell:nth-child(odd){border-left:0}.changes[data-cols] .cell:nth-child(n+3){border-top:1px solid var(--line)}}[hidden]{display:none!important}.chord-line{display:flex;align-items:center;gap:4px;min-width:0;align-self:end}.chev{-moz-appearance:none;appearance:none;-webkit-appearance:none;flex:0 0 auto;margin-right:-12px;width:20px;height:20px;padding:0;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);color:var(--ink-2);cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.chev:hover{border-color:var(--accent);color:var(--accent)}.chev[aria-expanded=true]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.chev:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.chev svg{width:11px;height:11px;display:block}.chev path{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.key-chev{margin:0 0 0 -4px;position:relative;top:1px}.chord-menu{position:fixed;z-index:80;min-width:212px;max-height:min(60vh,420px);overflow-y:auto;padding:6px;border:1px solid var(--line-strong);border-radius:12px;background:var(--surface);box-shadow:0 18px 44px -14px #0000008c}.chord-menu-head{padding:9px 10px 5px;font-size:.64rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.chord-menu-sep{height:1px;margin:6px 4px;background:var(--line)}.chord-item:has(.chord-item-avatar){align-items:center}.chord-item-avatar{flex:0 0 auto;display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-size:.78rem;font-weight:700;align-self:center}.chord-item{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:flex;align-items:baseline;gap:11px;width:100%;padding:9px 11px;border:0;border-radius:8px;background:transparent;color:var(--ink);text-align:left;cursor:pointer;transition:background .12s ease}.chord-item:hover{background:var(--surface-2)}.chord-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.chord-item[aria-selected=true]{background:var(--accent-soft)}.chord-item[aria-selected=true] .chord-item-num{color:var(--accent)}.chord-item-num{font-family:Fraunces,Georgia,serif;font-variation-settings:"opsz" 40;font-weight:600;font-size:1.05rem;min-width:3.4em;color:var(--ink-2)}.chord-item-sym{font-family:IBM Plex Sans Condensed,Archivo,system-ui,sans-serif;font-weight:600;font-size:1.15rem;color:var(--ink)}.chord-item-note{font-size:.78rem;color:var(--muted)}.chord-item-text{font-size:.9rem;font-weight:500;color:var(--ink)}.chord-item[aria-selected=true] .chord-item-text{color:var(--accent)}.chord-menu.ending-menu .chord-item-num{min-width:6.6em}.chord-menu.is-multi .chord-item{align-items:center}.chord-menu.is-multi .chord-item:before{content:"";flex:0 0 auto;width:15px;height:15px;box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid var(--line-strong);border-radius:4px;font-size:.66rem;font-weight:700;line-height:1;color:var(--accent-ink)}.chord-menu.is-multi .chord-item[aria-selected=true]:before{content:"✓";background:var(--accent);border-color:var(--accent)}.cell-voicing{display:flex;gap:5px;flex-wrap:wrap;margin-top:10px}.vsel{-moz-appearance:none;appearance:none;-webkit-appearance:none;font-family:Archivo,system-ui,sans-serif;font-size:.64rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:3px 21px 3px 8px;cursor:pointer;min-width:0;transition:border-color .15s ease,color .15s ease}.vsel:hover{border-color:var(--line-strong);color:var(--ink)}.vsel-wrap{position:relative;display:inline-flex;color:var(--ink-2)}.vsel-wrap:hover{color:var(--ink)}.vsel-wrap.is-set{color:var(--accent)}.vsel-wrap:after{content:"";position:absolute;right:8px;top:50%;width:8px;height:8px;margin-top:-4px;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 6 8 10.5 12.5 6' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 6 8 10.5 12.5 6' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;pointer-events:none}.vsel:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.vsel.is-set{border-color:var(--accent);color:var(--accent)}.stage-top{display:flex;align-items:flex-start;gap:14px 24px;flex-wrap:wrap}.stage-key{flex:0 1 18rem;min-width:0}.stage-tools{display:grid;grid-template-columns:repeat(4,auto);gap:8px 6px;align-items:center}.keylock,.pill,.rollbtn{-moz-appearance:none;appearance:none;-webkit-appearance:none;display:inline-flex;align-items:center;gap:6px;font-family:Archivo,system-ui,sans-serif;font-size:.68rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;padding:5px 11px 5px 9px;border:1px solid var(--line);border-radius:999px;background:var(--surface-2);color:var(--ink-2);cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s 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