:root{color-scheme:dark;--ink:#f3f4f1;--muted:#9ca3a3;--soft:#c7cdcd;--line:#2f3434;--paper:#0d0f10;--panel:#171a1b;--panel-strong:#1f2324;--field:#101213;--accent:#e6e7df;--hot:#d7ff62;--warn:#ff806b;--shadow:0 24px 80px rgba(0, 0, 0, 0.42);--tool-title-size:1.55rem;--tool-button-size:0.86rem;--tool-label-size:0.78rem}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(135deg,rgba(255,255,255,.035),transparent 28%),linear-gradient(315deg,rgba(215,255,98,.045),transparent 26%),var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}[hidden]{display:none!important}.home-screen{width:min(1180px,calc(100vw - 32px));min-height:100vh;margin:0 auto;padding:28px 0;display:grid;align-items:center}.home-shell{padding:32px;border:1px solid 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div>p{margin:4px 0 0;max-width:880px;color:var(--soft);font-size:.75rem;font-weight:650;line-height:1.5}.search-entry-intro .search-entry-note{margin-top:6px;color:var(--muted);font-size:.64rem;font-weight:600}.site-footer{width:calc(100vw - 32px);margin:0 auto 28px;padding:24px;display:grid;grid-template-columns:minmax(220px,1fr) minmax(320px,1.6fr);gap:20px 32px;border-top:1px solid var(--line);color:var(--soft)}.site-footer-intro strong{color:var(--ink);font-size:1.1rem}.site-footer-intro p,.site-footer-meta{margin:7px 0 0;font-size:.78rem;line-height:1.6}.site-footer-nav{display:flex;align-items:flex-start;justify-content:flex-end;flex-wrap:wrap;gap:10px 18px}.site-footer-nav a,.site-footer-nav button{color:var(--ink);font-size:.78rem;font-weight:850;text-decoration:none}.site-footer-nav a:focus-visible,.site-footer-nav a:hover,.site-footer-nav button:focus-visible,.site-footer-nav button:hover{color:var(--hot)}.site-footer-nav 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var(--line)}.brand-link{display:inline-flex;align-items:center;gap:9px;color:var(--hot);font-size:1.2rem;font-weight:950;text-decoration:none}.brand-link::before{content:"";width:30px;height:30px;border-radius:7px;background:url("./assets/brand/fretform-icon.png?v=20260719-transparent-mark-v2") center/contain no-repeat}.back-link{color:var(--soft);font-size:.82rem;font-weight:850;text-decoration:none}.back-link:focus-visible,.back-link:hover{color:var(--ink)}.info-main{margin:0 auto;padding:72px 0 88px}.info-hero{max-width:760px;margin-bottom:58px}.info-hero h1{margin:10px 0 18px;color:var(--ink);font-size:clamp(2.7rem, 8vw, 5.6rem);line-height:.98}.info-hero>p:last-child{color:var(--soft);font-size:1.05rem;line-height:1.8}.info-section{max-width:780px;padding:32px 0;border-top:1px solid var(--line)}.info-section h2{margin:0 0 14px;color:var(--ink);font-size:1.5rem}.info-section h3{margin:28px 0 8px;color:var(--ink);font-size:1rem}.info-section li,.info-section 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var(--line);box-shadow:var(--shadow)}.workspace-panel{container-type:inline-size;overflow:auto;grid-column:1/-1;min-width:0;min-height:0;max-width:100%;height:auto;scrollbar-color:#3b4240 #121516}#toolScreen.app-shell{width:var(--workspace-scaled-width,calc(100% - 24px));margin-right:0;margin-left:var(--workspace-scaled-margin,12px);zoom:var(--workspace-scale,1)}.chord-panel>:not(.panel-mark),.ear-panel>:not(.panel-mark),.fretboard-panel>:not(.panel-mark),.jam-panel>:not(.panel-mark),.practice-panel>:not(.panel-mark),.rhythm-panel>:not(.panel-mark),.riff-panel>:not(.panel-mark){position:relative;z-index:1}.panel-mark{position:static;z-index:1;display:grid;place-items:center;grid-row:1/span 2;width:46px;height:46px;border:1px solid rgba(215,255,98,.34);background:rgba(215,255,98,.08);color:var(--hot);opacity:1;pointer-events:none}.panel-mark 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