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svg[data-astro-cid-llonym5n]{fill:currentColor;width:18px;height:18px}.arrangements-play-button[data-astro-cid-llonym5n][aria-pressed=true]{color:var(--color-primary-deep);background:var(--color-primary-soft)}.arrangements-speed-row[data-astro-cid-llonym5n]{align-items:center;gap:var(--space-3);grid-template-columns:auto minmax(0,1fr);display:grid}.arrangements-speed-row[data-astro-cid-llonym5n]>span[data-astro-cid-llonym5n]{color:var(--color-muted);white-space:nowrap;font-size:.8rem}.arrangements-speed-group[data-astro-cid-llonym5n]{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.arrangements-speed-group[data-astro-cid-llonym5n] button[data-astro-cid-llonym5n]{border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);min-height:44px;color:var(--color-text);cursor:pointer;font-weight:620}.arrangements-speed-group[data-astro-cid-llonym5n] button[data-astro-cid-llonym5n][aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary-deep);background:var(--color-primary-soft)}.classroom-mode .arrangements-play-row[data-astro-cid-llonym5n]{padding-bottom:var(--space-3);margin-bottom:0}@media (width<=620px){.arrangements-play-row[data-astro-cid-llonym5n]{padding-bottom:var(--space-3);margin-bottom:0}.arrangements-play-button[data-astro-cid-llonym5n],.arrangements-speed-group[data-astro-cid-llonym5n] button[data-astro-cid-llonym5n]{min-height:40px}}.arrangements-explorer .arrangements-hint,.arrangements-explorer .arrangements-label{fill:var(--color-muted);font-family:var(--font-sans);font-size:18px}.arrangements-explorer .arrangements-slot-border{fill:none;stroke:var(--math-interactive-point);stroke-width:3px;stroke-dasharray:8 7;vector-effect:non-scaling-stroke}.arrangements-explorer .arrangements-connector{fill:none;stroke:var(--math-guide-line);stroke-width:3px;stroke-linecap:round;vector-effect:non-scaling-stroke}.arrangements-explorer .arrangements-card rect{stroke-width:2.5px;vector-effect:non-scaling-stroke;transition:fill .16s var(--ease), stroke .16s var(--ease)}.arrangements-explorer .arrangements-card text{fill:var(--color-text);font-family:var(--font-math);text-anchor:middle;dominant-baseline:central;pointer-events:none;font-weight:650}.arrangements-explorer .arrangements-card--candidate{cursor:pointer}.arrangements-explorer .arrangements-card--candidate rect{fill:var(--color-surface);stroke:var(--math-object-primary)}.arrangements-explorer .arrangements-card--candidate text{font-size:44px}.arrangements-explorer .arrangements-card--candidate:hover rect,.arrangements-explorer .arrangements-card--candidate:focus-visible rect{stroke-width:3.5px}.arrangements-explorer .arrangements-card--candidate:focus-visible{outline:none}.arrangements-explorer .arrangements-card--selected rect,.arrangements-explorer .arrangements-card--slot rect{fill:#f5d8bb;stroke:var(--math-interactive-point);stroke-width:3.5px}.arrangements-explorer .arrangements-card--slot text{font-size:44px}.arrangements-explorer .arrangements-card--leaf rect{fill:var(--color-primary-soft);stroke:var(--math-object-primary)}.arrangements-explorer .arrangements-card--leaf text{font-size:32px}.arrangements-explorer .arrangements-card--all rect{fill:var(--color-surface);stroke:var(--color-border-strong)}.arrangements-explorer .arrangements-card--all text{font-size:26px}.arrangements-explorer .arrangements-card--active rect{fill:#f5d8bb;stroke:var(--math-interactive-point);stroke-width:3px}.arrangements-graph[data-astro-cid-llonym5n]{touch-action:pan-y}.arrangements-explorer .arrangements-card--candidate{touch-action:none}@media (prefers-reduced-motion:reduce){.arrangements-explorer .arrangements-card rect{transition:none}}.graph-instruction[data-astro-cid-yyguqnbm]{box-sizing:border-box;width:min(100%,42rem);padding-inline:var(--space-4);text-align:center;text-wrap:pretty;margin-inline:auto}.expression-play-row[data-astro-cid-yyguqnbm]{gap:var(--space-2);margin-bottom:var(--space-6);padding-bottom:var(--space-5);border-bottom:1px solid var(--color-border);grid-column:1/-1;display:grid}.expression-play-button[data-astro-cid-yyguqnbm]{justify-content:center;align-items:center;gap:var(--space-2);border:1px solid var(--color-primary);border-radius:var(--radius-sm);color:#fff;background:var(--color-primary);cursor:pointer;width:100%;min-height:48px;font-weight:650;display:inline-flex}.expression-play-button[data-astro-cid-yyguqnbm][aria-pressed=true]{color:var(--color-primary-deep);background:var(--color-primary-soft)}.expression-speed-row[data-astro-cid-yyguqnbm]{align-items:center;gap:var(--space-3);grid-template-columns:auto minmax(0,1fr);display:grid}.expression-speed-row[data-astro-cid-yyguqnbm]>span[data-astro-cid-yyguqnbm]{color:var(--color-muted);white-space:nowrap;font-size:.8rem}.expression-speed-group[data-astro-cid-yyguqnbm]{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.expression-speed-group[data-astro-cid-yyguqnbm] button[data-astro-cid-yyguqnbm]{border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);min-height:44px;color:var(--color-text);cursor:pointer;font-weight:620}.expression-speed-group[data-astro-cid-yyguqnbm] button[data-astro-cid-yyguqnbm][aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary-deep);background:var(--color-primary-soft)}[data-astro-cid-yyguqnbm][data-x-slider]{touch-action:pan-y}.expression-board[data-astro-cid-yyguqnbm]{box-sizing:border-box;justify-content:center;gap:clamp(var(--space-5), 2.2vw, var(--space-8));width:100%;min-height:540px;padding:clamp(var(--space-7), 4vw, var(--space-10));color:var(--color-text);touch-action:pan-y;flex-direction:column;margin:0;display:flex}.expression-board__heading[data-astro-cid-yyguqnbm]{justify-items:center;gap:var(--space-2);text-align:center;display:grid}.expression-board__heading[data-astro-cid-yyguqnbm] span[data-astro-cid-yyguqnbm]{color:var(--color-primary-deep);letter-spacing:.14em;font-size:.78rem;font-weight:700}.expression-board__heading[data-astro-cid-yyguqnbm] strong[data-astro-cid-yyguqnbm]{text-wrap:balance;font-size:clamp(1.2rem,2vw,1.65rem);line-height:1.35}.expression-structure[data-astro-cid-yyguqnbm]{align-items:center;gap:var(--space-3);grid-template-columns:minmax(7.5rem,1fr) 2.5rem minmax(7.5rem,1fr) 2.5rem minmax(7.5rem,1fr);width:min(100%,48rem);margin-inline:auto;display:grid}.expression-part[data-astro-cid-yyguqnbm]{min-height:156px;padding:var(--space-4);border:1.5px solid 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(width<=620px){.expression-play-row[data-astro-cid-yyguqnbm]{padding-bottom:var(--space-3);margin-bottom:0}.expression-play-button[data-astro-cid-yyguqnbm],.expression-speed-group[data-astro-cid-yyguqnbm] button[data-astro-cid-yyguqnbm]{min-height:44px}.expression-board[data-astro-cid-yyguqnbm]{gap:var(--space-5);min-height:0;padding:var(--space-6) var(--space-3)}.expression-board__heading[data-astro-cid-yyguqnbm] strong[data-astro-cid-yyguqnbm]{max-width:18rem;font-size:1.08rem}.expression-structure[data-astro-cid-yyguqnbm]{gap:var(--space-1);grid-template-columns:minmax(4rem,1fr) 1.5rem minmax(4rem,1fr) 1.5rem minmax(4rem,1fr)}.expression-part[data-astro-cid-yyguqnbm]{min-height:112px;padding:var(--space-3) var(--space-1)}.expression-part[data-astro-cid-yyguqnbm] strong[data-astro-cid-yyguqnbm]{font-size:2rem}.expression-part[data-astro-cid-yyguqnbm] span[data-astro-cid-yyguqnbm]{margin-top:var(--space-2);font-size:.78rem}.expression-part[data-astro-cid-yyguqnbm] small[data-astro-cid-yyguqnbm]{min-height:2.5em;font-size:.72rem}.expression-operator[data-astro-cid-yyguqnbm]{font-size:1.7rem}.expression-substitution[data-astro-cid-yyguqnbm]{gap:var(--space-2) var(--space-3);padding-block:var(--space-3);grid-template-columns:1fr auto;font-size:.82rem;display:grid}.expression-substitution[data-astro-cid-yyguqnbm]>span[data-astro-cid-yyguqnbm]:first-child{text-align:right}.expression-substitution[data-astro-cid-yyguqnbm]>span[data-astro-cid-yyguqnbm]:last-child{grid-column:1/-1}.expression-substitution[data-astro-cid-yyguqnbm] strong[data-astro-cid-yyguqnbm]{min-width:4.5rem;padding:var(--space-2) var(--space-3)}.expression-evaluation[data-astro-cid-yyguqnbm]{gap:var(--space-2);grid-template-columns:auto 1fr auto auto}.expression-evaluation[data-astro-cid-yyguqnbm]>span[data-astro-cid-yyguqnbm]:first-child{font-size:.75rem}.expression-evaluation[data-astro-cid-yyguqnbm]>strong[data-astro-cid-yyguqnbm]{font-size:clamp(1.22rem,6vw,1.55rem)}.expression-equals[data-astro-cid-yyguqnbm]{font-size:1.1rem}.expression-board__conclusion[data-astro-cid-yyguqnbm]{padding-inline:var(--space-2);font-size:.8rem}.classroom-mode .expression-board[data-astro-cid-yyguqnbm]{justify-content:flex-start;gap:var(--space-3);padding-block:var(--space-4)}.classroom-mode .expression-board__heading[data-astro-cid-yyguqnbm]{display:none}}.graph-instruction[data-astro-cid-e5cx5ilx]{box-sizing:border-box;width:min(100%,42rem);padding-inline:var(--space-4);text-align:center;text-wrap:pretty;margin-inline:auto}.bar-play-row[data-astro-cid-e5cx5ilx]{gap:var(--space-2);margin-bottom:var(--space-6);padding-bottom:var(--space-5);border-bottom:1px solid 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button[data-astro-cid-e5cx5ilx],.bar-step-group[data-astro-cid-e5cx5ilx] button[data-astro-cid-e5cx5ilx]{border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);min-height:44px;color:var(--color-text);cursor:pointer;font-weight:620}.bar-speed-group[data-astro-cid-e5cx5ilx] button[data-astro-cid-e5cx5ilx][aria-pressed=true],.bar-step-group[data-astro-cid-e5cx5ilx] button[data-astro-cid-e5cx5ilx][aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary-deep);background:var(--color-primary-soft)}.bar-step-group[data-astro-cid-e5cx5ilx]{gap:var(--space-2);margin-bottom:var(--space-6);display:grid}.bar-step-group[data-astro-cid-e5cx5ilx]>span[data-astro-cid-e5cx5ilx]{color:var(--color-muted);font-size:.82rem}.bar-step-group[data-astro-cid-e5cx5ilx]>div[data-astro-cid-e5cx5ilx]{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.bar-chart-explorer 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var(--color-primary);border-radius:var(--radius-sm);color:#fff;background:var(--color-primary);cursor:pointer;width:100%;min-height:48px;font-weight:650;display:inline-flex}.chord-play-button[data-astro-cid-jnry5ofg] svg[data-astro-cid-jnry5ofg]{fill:currentColor;width:18px;height:18px}.chord-play-button[data-astro-cid-jnry5ofg][aria-pressed=true]{color:var(--color-primary-deep);background:var(--color-primary-soft)}.chord-speed-row[data-astro-cid-jnry5ofg]{align-items:center;gap:var(--space-3);grid-template-columns:auto minmax(0,1fr);display:grid}.chord-speed-row[data-astro-cid-jnry5ofg]>span[data-astro-cid-jnry5ofg]{color:var(--color-muted);white-space:nowrap;font-size:.8rem}.chord-speed-group[data-astro-cid-jnry5ofg]{gap:var(--space-2);grid-template-columns:repeat(3,1fr);display:grid}.chord-speed-group[data-astro-cid-jnry5ofg] button[data-astro-cid-jnry5ofg]{border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);min-height:44px;color:var(--color-text);cursor:pointer;font-weight:620}.chord-speed-group[data-astro-cid-jnry5ofg] button[data-astro-cid-jnry5ofg][aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary-deep);background:var(--color-primary-soft)}.classroom-mode .chord-play-row[data-astro-cid-jnry5ofg]{padding-bottom:var(--space-3);margin-bottom:0}.classroom-mode .chord-explorer .explorer-controls{z-index:2;background:var(--color-surface);align-content:start;position:relative;overflow:hidden}@media (height<=760px) and (width>=621px){.classroom-mode .chord-explorer .explorer-controls{gap:8px;padding:10px 14px}.chord-play-row[data-astro-cid-jnry5ofg]{gap:4px;padding-bottom:8px}.chord-play-button[data-astro-cid-jnry5ofg],.chord-speed-group[data-astro-cid-jnry5ofg] button[data-astro-cid-jnry5ofg],.classroom-mode .chord-explorer .preset-controls button,.classroom-mode .chord-explorer .reset-button{min-height:38px}.classroom-mode .chord-explorer .parameter-readout div{padding-block:2px}.classroom-mode .chord-explorer .boundary-note{display:none}}.classroom-mode .chord-explorer .explorer-heading{z-index:3;background:var(--color-surface);position:relative}@media (width<=620px){.chord-play-row[data-astro-cid-jnry5ofg]{padding-bottom:var(--space-3);margin-bottom:0}.chord-play-button[data-astro-cid-jnry5ofg],.chord-speed-group[data-astro-cid-jnry5ofg] button[data-astro-cid-jnry5ofg]{min-height:40px}}.chord-explorer .chord-circle{fill:none;stroke:var(--math-object-primary);stroke-width:4px;vector-effect:non-scaling-stroke}.chord-explorer .chord-center{fill:var(--color-math-blue);stroke:var(--color-math-blue-soft);stroke-width:3px;vector-effect:non-scaling-stroke}.chord-explorer .chord-segment{stroke:var(--math-object-primary);stroke-width:4px;stroke-linecap:round;vector-effect:non-scaling-stroke}.chord-explorer 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