:root{--tool-gap:var(--listing-shell-gap,1.5rem);--tool-panel-bg:var(--page-surface,var(--brand-surface-color));--tool-panel-border:var(--page-frame-color);--tool-muted-text:rgba(var(--brand-text-color-rgb,15,23,42),0.78);--tool-muted-text-strong:rgba(var(--brand-text-color-rgb,15,23,42),0.62);--tool-card-bg:rgba(var(--brand-text-color-rgb,15,23,42),0.04);--tool-card-border:rgba(var(--brand-text-color-rgb,15,23,42),0.12);--tool-chip-bg:rgba(var(--brand-text-color-rgb,15,23,42),0.06);--fretboard-circle-fill:var(--brand-surface-color);--fretboard-line:rgba(var(--brand-text-color-rgb,15,23,42),0.9);--fretboard-line-soft:rgba(var(--brand-text-color-rgb,15,23,42),0.7);--fretboard-muted-fill:var(--fretboard-circle-fill);--fretboard-muted-stroke:rgba(var(--brand-text-color-rgb,15,23,42),0.7);--fretboard-muted-text:rgba(var(--brand-text-color-rgb,15,23,42),0.9);--fretboard-muted-stroke-play:rgba(var(--brand-text-color-rgb,15,23,42),0.3);--fretboard-muted-text-play:rgba(var(--brand-text-color-rgb,15,23,42),0.4);--fretboard-marker:rgba(var(--brand-text-color-rgb,15,23,42),0.4);--fretboard-scale-text:rgba(var(--brand-text-color-rgb,15,23,42),0.9);--circle-sharp-rgb:var(--brand-color-rgb);--circle-flat-rgb:var(--brand-color-dark-rgb,var(--brand-color-rgb));--circle-neutral-rgb:var(--brand-text-color-rgb,15,23,42)}:root[data-theme="dark"]{--tool-panel-bg:var(--page-surface-muted,var(--brand-surface-color));--tool-muted-text:rgba(var(--brand-text-color-rgb,248,250,252),0.82);--tool-muted-text-strong:rgba(var(--brand-text-color-rgb,248,250,252),0.7);--tool-card-bg:rgba(var(--brand-text-color-rgb,248,250,252),0.08);--tool-card-border:rgba(var(--brand-text-color-rgb,248,250,252),0.2);--tool-chip-bg:rgba(var(--brand-text-color-rgb,248,250,252),0.1);--fretboard-circle-fill:var(--brand-surface-color);--fretboard-line:rgba(var(--brand-text-color-rgb,248,250,252),0.9);--fretboard-line-soft:rgba(var(--brand-text-color-rgb,248,250,252),0.7);--fretboard-muted-fill:var(--fretboard-circle-fill);--fretboard-muted-stroke:rgba(var(--brand-text-color-rgb,248,250,252),0.7);--fretboard-muted-text:rgba(var(--brand-text-color-rgb,248,250,252),0.92);--fretboard-muted-stroke-play:rgba(var(--brand-text-color-rgb,248,250,252),0.35);--fretboard-muted-text-play:rgba(var(--brand-text-color-rgb,248,250,252),0.5);--fretboard-marker:rgba(var(--brand-text-color-rgb,248,250,252),0.55);--fretboard-scale-text:rgba(var(--brand-text-color-rgb,248,250,252),0.92);--circle-flat-rgb:var(--brand-color-rgb);--circle-neutral-rgb:var(--brand-text-color-rgb,248,250,252)}.tool-shell{width:100%}.tool-frame{display:flex;flex-direction:column;gap:var(--tool-gap)}.tool-frame.listing-stack > * + *{margin-top:0}.tool-frame--above-fold{min-height:calc(100vh - var(--site-header-height,64px));--ui-frame-padding:var(--page-shell-top-offset) var(--page-shell-gutter) var(--page-shell-top-offset)}.tool-header{display:flex;flex-direction:column;gap:0.75rem}@media (min-width:768px){.tool-header{flex-direction:row;justify-content:space-between;align-items:flex-end}}.tool-header-text h1{margin:0;font-size:clamp(2rem,5vw,3rem);letter-spacing:var(--title-letter-spacing)}.tool-header-text p{margin:0;max-width:64ch;color:var(--tool-muted-text)}.tool-eyebrow{text-transform:uppercase;letter-spacing:var(--eyebrow-letter-spacing);font-size:0.7rem;color:var(--tool-muted-text-strong);margin:0}.tool-intro{max-width:72ch;color:var(--tool-muted-text);line-height:1.65}.tool-guide .tool-intro{max-width:none;width:100%}.tool-guide{display:flex;flex-direction:column;gap:0.75rem}.tool-guide > h2{margin:0;font-size:1.35rem;letter-spacing:var(--heading-letter-spacing);color:var(--brand-text-color)}.tool-intro h2,.tool-intro h3,.tool-intro h4{margin:1.5rem 0 0.6rem;color:var(--brand-text-color);letter-spacing:var(--heading-letter-spacing)}.tool-intro h2{font-size:1.25rem}.tool-intro h3{font-size:1.05rem}.tool-intro p{margin:0.5rem 0 0}.tool-intro ul,.tool-intro ol{margin:0.65rem 0 0;padding-left:1.25rem}.tool-intro li{margin:0.35rem 0}.tool-controls{display:grid;gap:0.75rem;align-items:end;padding:clamp(0.75rem,2vw,1.1rem);border:1px solid var(--tool-panel-border);border-radius:var(--global-border-radius);background:var(--tool-panel-bg);--tool-control-height:40px}.tool-controls--scales{display:grid;gap:0.75rem;min-width:0;grid-template-columns:1fr}.tool-controls-row{display:grid;gap:0.75rem;align-items:end;min-width:0}.tool-controls-row--primary{grid-template-columns:repeat(4,minmax(0,1fr))}.tool-controls-row--toggles{grid-template-columns:repeat(4,minmax(0,1fr))}.tool-controls-row--toggles .tool-toggle{flex-wrap:wrap}.tool-controls-row--tempo{grid-template-columns:minmax(0,1fr)}.tool-controls-row--actions{grid-template-columns:minmax(0,1fr)}.tool-actions--quad{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0.5rem}.tool-actions--quad .tool-action{width:100%;text-align:center}.tool-actions--quad .tool-action--ghost{height:var(--tool-control-height)}@media (min-width:768px){.tool-controls{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.tool-controls .tool-actions{grid-column:auto}.tool-controls--scales{grid-template-columns:1fr}}.tool-field{display:flex;flex-direction:column;gap:0.35rem;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--tool-muted-text-strong);min-width:0}.tool-field--root select{max-width:120px}.tool-controls--scales .tool-field--root{grid-column:span 1}.tool-controls--scales .tool-field--scale{grid-column:span 2}.tool-controls--scales .tool-field--view{grid-column:span 1}.tool-controls--scales .tool-field--loop{grid-column:span 2}.tool-controls--scales .tool-field--direction{grid-column:span 2}.tool-controls--scales .tool-field--root select{max-width:none;width:100%}.tool-controls--scales .tool-field--scale select{width:100%}.tool-controls--scales .tool-toggle{display:grid;gap:0.4rem;width:100%}.tool-controls--scales .tool-toggle-btn{width:100%}.tool-controls--scales .tool-toggle[data-scale-view]{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-controls--scales .tool-toggle[data-scale-loop]{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-controls--scales .tool-toggle[data-scale-direction]{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-field--compact{width:100%}.tool-field select{margin-top:0.15rem;padding:0.45rem 0.65rem;border:1px solid var(--tool-panel-border);background:var(--tool-panel-bg);color:var(--brand-text-color);font-size:0.95rem;border-radius:var(--global-border-radius);height:var(--tool-control-height)}.tool-toggle{display:flex;gap:0.35rem;padding:0.35rem;border-radius:var(--global-border-radius);border:1px solid var(--tool-panel-border);background:var(--tool-card-bg);height:var(--tool-control-height);box-sizing:border-box}.tool-field--compact .tool-toggle{width:100%;padding:0.25rem}.tool-toggle-btn{border:1px solid transparent;padding:0.35rem 0.7rem;background:transparent;color:var(--brand-text-color);font-size:0.85rem;cursor:pointer;border-radius:var(--global-border-radius);flex:1;text-align:center;min-width:0;height:100%;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.tool-field--compact .tool-toggle-btn{padding:0.25rem 0.55rem;font-size:0.8rem}.tool-toggle-btn.is-active{background:var(--brand-color);color:#fff;border-color:var(--brand-color)}.tool-actions{display:flex;flex-wrap:wrap;gap:0.5rem;justify-self:start}.tool-actions.tool-actions--quad{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0.5rem}.tool-actions.tool-actions--quad .tool-action{width:100%;text-align:center}.tool-range{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0.5rem;align-items:center;min-height:var(--tool-control-height);width:100%;padding:0;height:var(--tool-control-height);border:1px solid var(--tool-panel-border);border-radius:calc(var(--global-border-radius) - 4px);box-sizing:border-box}.tool-range-track{grid-column:span 3;display:flex;align-items:center;height:100%;padding:0 0.5rem;box-sizing:border-box}.tool-range-track input[type="range"]{width:100%;accent-color:var(--brand-color)}.tool-range-value{display:flex;align-items:center;justify-content:center;gap:0.35rem;padding:0 0.6rem;border:0;border-radius:0;background:transparent;color:var(--brand-text-color);height:100%;margin:0;box-sizing:border-box;grid-column:span 1;width:100%;max-width:none;min-width:0;position:relative}.tool-range-value::before{content:"";position:absolute;top:1px;bottom:1px;left:0;width:1px;background:var(--tool-panel-border)}.tool-range-value input[type="number"]{flex:1;min-width:0;width:100%;padding:0;border:0;background:transparent;color:inherit;font-size:0.85rem;text-align:center;height:100%;box-sizing:border-box;appearance:textfield;-moz-appearance:textfield}.tool-range-value input[type="number"]::-webkit-outer-spin-button,.tool-range-value input[type="number"]::-webkit-inner-spin-button{margin:0;-webkit-appearance:none}.tool-range-unit{font-size:0.75rem;color:var(--tool-muted-text);min-width:0;text-align:right;white-space:nowrap}.tool-action{border:1px solid var(--brand-color);background:var(--brand-color);color:#fff;padding:0.45rem 0.85rem;font-size:0.9rem;cursor:pointer;transition:box-shadow 0.2s ease,filter 0.2s ease;border-radius:var(--global-border-radius);transform:none !important;height:var(--tool-control-height)}.tool-action--ghost{background:transparent;color:var(--brand-text-color);border-color:var(--tool-panel-border)}.tool-action--ghost:hover,.tool-action--ghost:focus-visible{border-color:var(--brand-color);color:var(--brand-color);box-shadow:0 0 0 3px rgba(var(--brand-color-rgb),0.2)}.tool-action:active,.tool-action:focus,.tool-action:focus-visible,.tool-action:hover{transform:none !important}.tool-action.is-playing{box-shadow:0 0 0 2px rgba(var(--brand-color-rgb),0.25);animation:toolPulse 1s ease-in-out infinite}@keyframes toolPulse{0%{box-shadow:0 0 0 0 rgba(var(--brand-color-rgb),0.4)}50%{box-shadow:0 0 0 6px rgba(var(--brand-color-rgb),0.05)}100%{box-shadow:0 0 0 0 rgba(var(--brand-color-rgb),0.4)}}.tool-action:hover,.tool-action:focus-visible{box-shadow:0 0 0 3px rgba(var(--brand-color-rgb),0.2);filter:brightness(1.02)}.tool-layout{display:flex;flex-direction:column;gap:var(--tool-gap)}.tool-split{display:grid;gap:var(--tool-gap)}@media (min-width:1024px){.tool-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,0.9fr);align-items:start}.tool-layout--circle{grid-template-columns:minmax(0,0.8fr) minmax(0,1.2fr)}.tool-split{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}}.tool-panel{border:1px solid var(--tool-panel-border);background:var(--tool-panel-bg);padding:clamp(0.75rem,2vw,1.25rem);border-radius:var(--global-border-radius)}:root[data-theme="dark"] .tool-panel--circle-sticky{--tool-panel-bg:var(--brand-surface-color)}.tool-panel--circle-sticky{position:sticky;top:var(--page-shell-top-offset);align-self:flex-start}@media (max-width:1023px){.tool-panel--circle-sticky{top:0;align-self:stretch;width:100%}}.tool-panel--fretboard{display:flex;flex-direction:column;gap:0.75rem;padding:clamp(0.45rem,1vw,0.75rem)}.tool-panel--fretboard .tool-legend{margin-top:0.4rem}.tool-links{margin-top:1rem;display:flex;flex-wrap:wrap;gap:0.75rem;font-size:0.9rem}.tool-links a{color:var(--brand-color)}.tool-legend{display:flex;flex-wrap:wrap;gap:0.75rem;margin-top:0.75rem;font-size:0.85rem;color:var(--tool-muted-text)}.tool-legend-item{display:inline-flex;align-items:center;gap:0.35rem}.legend-dot{width:10px;height:10px;border-radius:999px;background:var(--tool-chip-bg);border:1px solid var(--tool-panel-border)}.legend-dot--root{background:var(--brand-color);border-color:var(--brand-color)}.legend-dot--scale{background:rgba(var(--brand-color-rgb),0.3)}.legend-dot--major{background:var(--brand-color);border-color:var(--brand-color)}.legend-dot--minor{background:rgba(var(--brand-color-rgb),0.25)}.legend-dot--circle-active{background:rgba(var(--brand-color-rgb),0.5);border-color:var(--brand-color)}.legend-dot--circle-related{background:rgba(var(--brand-color-rgb),0.32);border-color:rgba(var(--brand-color-rgb),0.6)}.legend-dot--circle-neighbor{background:rgba(var(--brand-color-rgb),0.22);border-color:rgba(var(--brand-color-rgb),0.5)}.scale-detail-header h2,.circle-detail-header h2{margin:0;font-size:1.5rem}.scale-detail-header p,.circle-detail-header p{margin:0.35rem 0 0;color:var(--tool-muted-text)}.circle-panel{display:flex;flex-direction:column;gap:1rem}.circle-panel-controls{display:grid;gap:0.75rem;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.circle-panel-section{display:flex;flex-direction:column;gap:0.65rem}.circle-panel-title{margin:0;font-size:0.85rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--tool-muted-text-strong)}.circle-panel-description{margin:-0.3rem 0 0;font-size:0.85rem;color:var(--tool-muted-text);line-height:1.4}.circle-chord-grid{display:grid;gap:0.55rem;grid-template-columns:repeat(4,minmax(0,1fr))}.circle-chord-grid--compact{grid-template-columns:repeat(4,minmax(0,1fr))}.circle-chord-card{display:flex;flex-direction:column;gap:0.4rem;border:1px solid var(--tool-panel-border);background:var(--tool-panel-bg);border-radius:var(--global-border-radius);padding:0.45rem}.circle-chord-link{display:block;width:100%}.circle-chord-link img{width:100%;height:auto;display:block}.circle-chord-audio{width:100%;justify-content:center}.circle-progression-list{display:grid;gap:0.85rem}.circle-progression{display:flex;flex-direction:column;gap:0.5rem}.circle-progression-title{margin:0;font-size:0.8rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--tool-muted-text-strong)}.scale-detail-grid,.circle-detail-grid{display:grid;gap:1rem;margin-top:1rem}.scale-detail-grid h3,.circle-detail-grid h3{margin:0 0 0.35rem 0;font-size:0.9rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--tool-muted-text-strong)}.scale-detail-subtitle{margin:0.5rem 0 0.35rem;font-size:0.8rem;text-transform:uppercase;letter-spacing:0.08em;color:var(--tool-muted-text-strong)}.scale-detail-note{margin:0 0 0.45rem;color:var(--tool-muted-text);font-size:0.85rem;line-height:1.4}.scale-detail-note:empty{display:none}.scale-chip-row .scale-detail-note{margin:0}.scale-chip-row{display:flex;flex-wrap:wrap;gap:0.5rem}.scale-chip-row--auto{display:grid;grid-template-columns:repeat(var(--scale-chip-columns,6),minmax(0,1fr));gap:0.5rem;--scale-chip-max-columns:10}@media (max-width:767px){.scale-chip-row--auto{--scale-chip-max-columns:6}}.scale-chip-row--auto .scale-chip,.scale-chip-row--auto .scale-chip-button,.scale-chip-row--auto .scale-chip-link{width:100%;min-width:0;display:flex;align-items:center;text-align:center;justify-content:center}.scale-chip{padding:0.2rem 0.55rem;font-size:0.85rem;border:1px solid var(--tool-panel-border);background:var(--tool-chip-bg);color:var(--brand-text-color);line-height:1.2;border-radius:var(--global-border-radius)}.scale-chip-button{appearance:none;border:1px solid var(--tool-panel-border);background:var(--tool-chip-bg);color:var(--brand-text-color);cursor:pointer}.scale-chip.is-current{border-color:var(--brand-color);background:rgba(var(--brand-color-rgb),0.18);color:var(--brand-text-color)}.scale-chip-link{text-decoration:none;transition:border-color 0.2s ease,background 0.2s ease}.scale-chip-link:hover,.scale-chip-link:focus-visible,.scale-chip-button:hover,.scale-chip-button:focus-visible{border-color:var(--brand-color);background:rgba(var(--brand-color-rgb),0.15)}.fretboard-shell{width:100%}.fretboard-diagram{width:100%;height:auto}.fretboard-bg{fill:var(--fretboard-circle-fill);stroke:transparent;stroke-width:0}.fretboard-string{stroke:var(--fretboard-line);stroke-width:1.5;stroke-linecap:square}.fretboard-fret{stroke:var(--fretboard-line-soft);stroke-width:1.5;stroke-linecap:square}.fretboard-fret--nut{stroke:var(--fretboard-line);stroke-width:4;stroke-linecap:square}.fretboard-marker{fill:var(--fretboard-marker)}.fretboard-string-label-ring{fill:var(--fretboard-circle-fill);stroke:transparent;stroke-width:1.1;opacity:0;transition:opacity 0.2s ease,stroke 0.2s ease}.fretboard-string-label.is-current .fretboard-string-label-ring,.fretboard-string-label.is-chord .fretboard-string-label-ring{stroke:var(--brand-color);fill:var(--brand-color);opacity:1}.fretboard-string-label.is-current .fretboard-string-label-ring{stroke-width:1.3}.fretboard-string-label-text{font-size:9px;font-weight:600;fill:var(--fretboard-muted-text)}.fretboard-string-label.is-scale .fretboard-string-label-text{fill:var(--brand-text-color)}.fretboard-string-label.is-root .fretboard-string-label-text{fill:var(--brand-color)}.fretboard-string-label.is-current .fretboard-string-label-text,.fretboard-string-label.is-chord .fretboard-string-label-text{fill:#fff}.fretboard-note{opacity:1;transform:none;transition:opacity 0.2s ease}.fretboard-note.is-muted{opacity:1}.fretboard-note.is-active{opacity:1}.fretboard-note.is-current{opacity:1;transform:none}.fretboard-note.is-chord{opacity:1}.fretboard-note-base{fill:var(--fretboard-circle-fill);stroke:var(--fretboard-muted-stroke);stroke-width:0.4;fill-opacity:1;stroke-opacity:1}.fretboard-note-tint{fill:rgba(var(--brand-color-rgb),0.1);opacity:0}.fretboard-note.is-scale .fretboard-note-base{stroke:var(--brand-color);stroke-width:0.6}.fretboard-note.is-scale .fretboard-note-tint{opacity:1}.fretboard-note.is-root .fretboard-note-base{fill:var(--brand-color);stroke:var(--brand-color);stroke-width:0.5}.fretboard-note.is-root .fretboard-note-tint{opacity:0}.fretboard-note.is-chord .fretboard-note-base{fill:var(--brand-color);stroke:var(--brand-color);stroke-width:0.5}.fretboard-note.is-chord .fretboard-note-tint{opacity:0}.fretboard-note.is-current .fretboard-note-base{fill:var(--brand-color);stroke:var(--brand-color);stroke-width:0.5}.fretboard-note.is-current .fretboard-note-tint{opacity:0}.fretboard-note-text{font-size:9px;font-weight:600;fill:var(--fretboard-muted-text)}.fretboard-note.is-scale .fretboard-note-text{fill:var(--brand-color)}.fretboard-note.is-root .fretboard-note-text{fill:#fff}.fretboard-note.is-chord .fretboard-note-text,.fretboard-note.is-current .fretboard-note-text{fill:#fff}.fretboard-shell.is-playing .fretboard-note.is-root .fretboard-note-base,.fretboard-shell.is-playing .fretboard-note.is-chord .fretboard-note-base{fill:var(--fretboard-circle-fill);stroke:var(--brand-color)}.fretboard-shell.is-playing .fretboard-note.is-root .fretboard-note-text,.fretboard-shell.is-playing .fretboard-note.is-chord .fretboard-note-text{fill:var(--brand-color)}.fretboard-shell.is-playing .fretboard-note.is-current .fretboard-note-base{fill:var(--brand-color);stroke:var(--brand-color)}.fretboard-shell.is-playing .fretboard-note.is-current .fretboard-note-text{fill:#fff}.fretboard-shell.is-playing .fretboard-string-label.is-chord:not(.is-current) .fretboard-string-label-ring{fill:var(--fretboard-circle-fill);stroke:var(--brand-color)}.fretboard-shell.is-playing .fretboard-string-label.is-chord:not(.is-current) .fretboard-string-label-text{fill:var(--brand-color)}[data-scales-root] .fretboard-note.is-muted{opacity:0;pointer-events:none}[data-scales-root] .fretboard-note{opacity:0}[data-scales-root] .fretboard-note.is-scale,[data-scales-root] .fretboard-note.is-root,[data-scales-root] .fretboard-note.is-current,[data-scales-root] .fretboard-note.is-chord{opacity:1}[data-scales-root] .fretboard-note.is-scale .fretboard-note-tint{opacity:0}[data-scales-root] .fretboard-note.is-scale .fretboard-note-base{stroke-width:1.1}[data-scales-root] .fretboard-note.is-scale:not(.is-current):not(.is-chord) .fretboard-note-text{fill:var(--fretboard-scale-text)}[data-scales-root] .fretboard-note.is-root:not(.is-current):not(.is-chord) .fretboard-note-base{fill:var(--fretboard-circle-fill);stroke:var(--brand-color);stroke-width:1.1}[data-scales-root] .fretboard-note.is-root:not(.is-current):not(.is-chord) .fretboard-note-tint{opacity:1}[data-scales-root] .fretboard-note.is-root:not(.is-current):not(.is-chord) .fretboard-note-text{fill:var(--fretboard-scale-text)}[data-scales-root] .fretboard-note.is-current .fretboard-note-base,[data-scales-root] .fretboard-note.is-chord .fretboard-note-base{fill:var(--brand-color);stroke:var(--brand-color)}[data-scales-root] .fretboard-note.is-current .fretboard-note-text,[data-scales-root] .fretboard-note.is-chord .fretboard-note-text{fill:#fff}.circle-shell{width:100%}.circle-diagram{width:100%;height:auto;max-width:520px;margin:0 auto;display:block}.circle-bg{fill:var(--tool-card-bg);stroke:none}.circle-ring{fill:none;stroke:rgba(var(--brand-text-color-rgb,15,23,42),0.18);stroke-width:1.5}:root[data-theme="dark"] .circle-ring{stroke:rgba(var(--brand-text-color-rgb,248,250,252),0.25)}.circle-divider{stroke:rgba(var(--brand-text-color-rgb,15,23,42),0.18);stroke-width:1}:root[data-theme="dark"] .circle-divider{stroke:rgba(var(--brand-text-color-rgb,248,250,252),0.25)}.circle-key{cursor:pointer;transition:opacity 0.2s ease,transform 0.2s ease;--circle-key-rgb:var(--circle-neutral-rgb);-webkit-tap-highlight-color:transparent}.circle-key:focus,.circle-key:focus-visible{outline:none}.circle-key[data-signature-count="0"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="1"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="2"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="3"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="4"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="5"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="6"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-key[data-signature-count="7"]{--circle-major-alpha:0.08;--circle-minor-alpha:0.08;--circle-stroke-alpha:0.28}.circle-segment{transition:fill 0.2s ease,stroke 0.2s ease,opacity 0.2s ease}.circle-segment--major{fill:rgba(var(--circle-key-rgb,37,99,235),var(--circle-major-alpha,0.12));stroke:rgba(var(--circle-key-rgb,37,99,235),var(--circle-stroke-alpha,0.35));stroke-width:1}.circle-segment--minor{fill:rgba(var(--circle-key-rgb,37,99,235),var(--circle-minor-alpha,0.08));stroke:rgba(var(--circle-key-rgb,37,99,235),var(--circle-stroke-alpha,0.35));stroke-width:1}.circle-key-label{font-size:15px;font-weight:700;fill:var(--brand-text-color);pointer-events:none}.circle-key-label--minor{font-size:13px;font-weight:600;opacity:0.85}.circle-key-label--signature{font-size:12px;fill:var(--tool-muted-text-strong);letter-spacing:0.04em;pointer-events:none}.circle-key.is-neighbor-major .circle-segment--major{fill:rgba(var(--brand-color-rgb),0.22);stroke:rgba(var(--brand-color-rgb),0.5)}.circle-key.is-neighbor-minor .circle-segment--minor{fill:rgba(var(--brand-color-rgb),0.22);stroke:rgba(var(--brand-color-rgb),0.5)}.circle-key.is-related-major .circle-segment--major{fill:rgba(var(--brand-color-rgb),0.32);stroke:rgba(var(--brand-color-rgb),0.65)}.circle-key.is-related-minor .circle-segment--minor{fill:rgba(var(--brand-color-rgb),0.32);stroke:rgba(var(--brand-color-rgb),0.65)}.circle-key.is-active-major .circle-segment--major{fill:rgba(var(--brand-color-rgb),0.5);stroke:var(--brand-color)}.circle-key.is-active-minor .circle-segment--minor{fill:rgba(var(--brand-color-rgb),0.5);stroke:var(--brand-color)}.circle-key.is-active-major .circle-key-label--major,.circle-key.is-active-minor .circle-key-label--minor{fill:#fff}[data-circle-mode="minor"] .circle-segment--major,[data-circle-mode="minor"] .circle-key-label--major{opacity:0.45}[data-circle-mode="major"] .circle-segment--minor,[data-circle-mode="major"] .circle-key-label--minor{opacity:0.6}@media (max-width:640px){.tool-controls{grid-template-columns:1fr}.tool-actions{justify-content:flex-start}.tool-controls-row{gap:0.5rem}.tool-toggle-btn{font-size:0.75rem}.tool-controls-row--toggles .tool-toggle-btn{padding:0.2rem 0.35rem}.tool-actions--quad .tool-action{font-size:0.75rem;padding:0.35rem 0.4rem}}