:root{color-scheme:light;--paper: #f5f0e3;--paper-shadow: #e6dbc9;--paper-grad-top: #f2ede0;--paper-grad-bottom: #ebe6d9;--card-surface: #fefdf9;--option-surface: #fbfaf7;--ink: #1a1c1f;--moss: #477a59;--terminal: #75f566;--coral: #fa6b5e;--cobalt: #4769c4;--gold: #f2c24a;--charcoal: #242629;--ink-72: rgba(26, 28, 31, .72);--ink-54: rgba(26, 28, 31, .54);--ink-34: rgba(26, 28, 31, .34);--ink-12: rgba(26, 28, 31, .12);--ink-08: rgba(26, 28, 31, .08);--moss-wash: rgba(71, 122, 89, .14);--coral-wash: rgba(250, 107, 94, .14);--cobalt-wash: rgba(71, 105, 196, .12);--gold-wash: rgba(242, 194, 74, .18);--font-serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--text-display: 30px;--text-title: 23px;--text-headline: 19px;--text-body: 16px;--text-caption: 13px;--text-micro: 11px;--radius-card: 28px;--radius-control: 16px;--radius-tape: 8px;--hairline: 1.4px;--shadow-card: 0 10px 18px rgba(26, 28, 31, .12);--shadow-card-pressed: 0 4px 9px rgba(26, 28, 31, .1);--press-scale: .985;--ease-spring: cubic-bezier(.2, .9, .25, 1);--dur-press: 90ms;--gutter: 18px;--stage-fraction: 55%;--keyboard-fraction: 35%;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:var(--text-body);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}body{min-height:100dvh}.paper-canvas{position:relative;min-height:100dvh;background:linear-gradient(160deg,var(--paper-grad-top),var(--paper-grad-bottom));isolation:isolate}.paper-canvas:before,.paper-canvas:after{content:"";position:fixed;border-radius:50%;pointer-events:none;z-index:0}.paper-canvas:before{width:220px;height:220px;top:-80px;left:-60px;background:#fa6b5e1f;filter:blur(12px)}.paper-canvas:after{width:260px;height:260px;right:-150px;bottom:-120px;background:#4769c40d;filter:blur(70px)}.paper-texture{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;opacity:.18;mix-blend-mode:multiply;background-image:radial-gradient(rgba(0,0,0,.18) .6px,transparent .7px);background-size:18px 18px;background-position:8px 10px}.headline{font-family:var(--font-serif);font-weight:700;font-size:var(--text-title);line-height:1.18;letter-spacing:-.01em;color:var(--ink);margin:0}.display{font-family:var(--font-serif);font-weight:800;font-size:var(--text-display);line-height:1.1;letter-spacing:-.015em;margin:0}.serif-body{font-family:var(--font-serif);font-size:var(--text-body);line-height:1.45;color:var(--ink-72)}.mono-label{font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-54)}.numeric{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}.section-stamp{display:flex;align-items:center;gap:10px}.section-stamp>span{font-family:var(--font-mono);font-size:var(--text-caption);font-weight:900;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-72);white-space:nowrap}.section-stamp:after{content:"";flex:1;height:1px;background:var(--ink-12)}.card{--card-tint: var(--ink-34);padding:18px;background:var(--card-surface);border:var(--hairline) solid var(--card-tint);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.card--moss{--card-tint: rgba(71, 122, 89, .34)}.card--coral{--card-tint: rgba(250, 107, 94, .34)}.card--cobalt{--card-tint: rgba(71, 105, 196, .34)}.card--gold{--card-tint: rgba(242, 194, 74, .34)}.tape-label{display:inline-block;padding:6px 10px;border-radius:var(--radius-tape);background:var(--charcoal);color:#fff;font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.12em;text-transform:uppercase;transform:rotate(-1.5deg)}.tape-label--moss{background:var(--moss)}.tape-label--coral{background:var(--coral)}.tape-label--cobalt{background:var(--cobalt)}.tape-label--gold{background:var(--gold);color:var(--ink)}.pressable{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:var(--hairline) solid var(--ink-34);background:var(--option-surface);color:var(--ink);border-radius:var(--radius-control);box-shadow:var(--shadow-card);transition:transform var(--dur-press) var(--ease-spring),box-shadow var(--dur-press) var(--ease-spring),background-color var(--dur-press) linear;touch-action:manipulation;cursor:pointer}.pressable:active,.pressable[data-pressed=true]{transform:scale(var(--press-scale));box-shadow:var(--shadow-card-pressed)}.pressable:focus-visible{outline:2px solid var(--cobalt);outline-offset:2px}.button-primary{display:block;width:100%;padding:18px 20px;background:var(--ink);color:var(--paper);border-color:transparent;border-radius:var(--radius-card);font-family:var(--font-serif);font-size:var(--text-headline);font-weight:700;text-align:center;text-decoration:none}@media (prefers-reduced-motion: reduce){.pressable{transition:none}}#root{min-height:100dvh}.app-shell{position:relative;z-index:1;display:flex;flex-direction:column;min-height:100dvh;padding-top:var(--safe-top)}.app-main{flex:1;padding:0 var(--gutter) calc(96px + var(--safe-bottom));max-width:560px;width:100%;margin:0 auto;box-sizing:border-box}.app-shell:has(.play-surface){height:100dvh}.app-main:has(.play-surface){display:flex;flex-direction:column;overflow-y:auto;padding-bottom:calc(84px + var(--safe-bottom))}.app-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px var(--gutter) 12px;max-width:560px;width:100%;margin:0 auto;box-sizing:border-box}.app-header__title{font-family:var(--font-serif);font-weight:800;font-size:var(--text-title);letter-spacing:-.015em;margin:0}.tab-bar{position:fixed;left:0;right:0;bottom:0;z-index:5;display:flex;gap:6px;padding:8px 12px calc(8px + var(--safe-bottom));background:#f5f0e3eb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--ink-12)}.tab-bar__item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;border-radius:var(--radius-control);text-decoration:none;color:var(--ink-54);font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.1em;text-transform:uppercase;background:transparent;border:none;box-shadow:none}.tab-bar__item[aria-current=page]{color:var(--ink);background:var(--card-surface);border:1px solid var(--ink-12)}.tab-bar__glyph{font-size:17px;line-height:1}.stack{display:flex;flex-direction:column;gap:16px}.stack--tight{gap:10px}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.hero-card{display:block;width:100%;text-align:left;padding:22px;background:var(--card-surface);box-sizing:border-box}.hero-card__kicker{margin-bottom:12px}.hero-card__title{font-family:var(--font-serif);font-size:var(--text-display);font-weight:800;letter-spacing:-.015em;margin:0 0 6px}.hero-card__sub{font-family:var(--font-serif);font-size:var(--text-body);color:var(--ink-72);margin:0 0 18px}.hero-card__cta{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:var(--text-caption);font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--moss)}.module-row{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:16px 18px;box-sizing:border-box;text-align:left}.module-row__title{font-family:var(--font-serif);font-size:var(--text-headline);font-weight:700;margin:0 0 2px}.module-row__meta{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-54);margin:0}.module-row--locked{opacity:.55}.play-surface{display:flex;flex-direction:column;gap:12px;flex:1 1 auto;min-height:0}.play-surface__stage{flex:1 1 55%;display:flex;align-items:center;justify-content:center;border:1px dashed var(--ink-12);border-radius:var(--radius-card);background:#fefdf999}.play-surface__hud{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:var(--radius-control);background:var(--option-surface);border:1px solid var(--ink-12)}.play-surface__keyboard{flex:0 0 35%;min-height:180px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--ink-12);border-radius:var(--radius-card);background:#fefdf999}.placeholder-note{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-34);text-align:center;padding:0 16px}.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.stat-tile{padding:14px;border-radius:var(--radius-control);background:var(--option-surface);border:1px solid var(--ink-12)}.stat-tile__value{font-family:var(--font-mono);font-size:22px;font-weight:700;font-variant-numeric:tabular-nums}.stat-tile__label{font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-54);margin-top:4px}.setting-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 4px;border-bottom:1px solid var(--ink-08)}.setting-row:last-child{border-bottom:none}.setting-row__label{font-family:var(--font-serif);font-size:var(--text-body)}.setting-row__value{font-family:var(--font-mono);font-size:var(--text-caption);color:var(--ink-54)}.play-surface{position:relative}.play-surface__top{gap:8px}.play-surface__end{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--ink-12);background:transparent;color:var(--ink-54);border-radius:999px;padding:5px 11px;cursor:pointer;touch-action:manipulation}.play-surface__end:active{background:var(--ink-08)}.play-surface__keyboard--live{border:none;background:none;padding:0;display:flex;flex-direction:column;flex:2 1 auto;min-height:max(200px,30dvh);max-height:46dvh}.play-surface__keyboard--live>.kbd{flex:1 1 0;height:auto}.stage{position:relative;flex:1 1 auto;min-height:170px;max-height:min(46dvh,420px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:14px 10px;box-sizing:border-box;border:1px solid var(--ink-08);border-radius:var(--radius-card);background:#fefdf9b8}.stage__figure{flex:1;width:100%;min-height:0;display:flex;align-items:center;justify-content:center}.stage__figure svg{max-height:min(34dvh,330px)}.stage__empty{width:1px;height:100%}.stage__prompt{margin:0;text-align:center;color:var(--ink-72)}.stage__text{margin:0;text-align:center}.stage__unknown{margin:0;color:var(--ink-34);text-transform:none;letter-spacing:0}.stage--lifted .stage__figure{animation:stage-lift .32s var(--ease-spring)}@keyframes stage-lift{0%{transform:translateY(0)}40%{transform:translateY(-6px)}to{transform:translateY(0)}}@media (prefers-reduced-motion: reduce){.stage--lifted .stage__figure{animation:none}}.stage--baseline .stage__figure{flex-direction:column;gap:10px;text-align:center}.baseline__copy{max-width:30ch;margin:0 auto}.baseline__copy p{margin:8px 0 0}.play-surface__hint{position:absolute;left:50%;transform:translate(-50%);bottom:calc(35% + 18px);padding:8px 16px;font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--cobalt);background:var(--card-surface);border-color:var(--cobalt-wash)}.unlock-gate{position:absolute;top:0;right:0;bottom:0;left:0;z-index:4;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;text-align:center;border:none;border-radius:var(--radius-card);background:#f5f0e3f0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);cursor:pointer;touch-action:manipulation;-webkit-appearance:none;-moz-appearance:none;appearance:none;color:var(--ink)}.unlock-gate__title{margin-top:4px}.unlock-gate__sub{max-width:26ch}.unlock-gate__note{max-width:30ch;color:var(--ink-54);text-transform:none;letter-spacing:0;line-height:1.4}.results__capability{font-family:var(--font-serif);font-size:var(--text-headline);font-weight:600;line-height:1.3;color:var(--moss);margin:0}.result-rows{display:grid;gap:12px;margin:0}.result-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px}.result-row__label{margin:0;flex:none}.result-row__value{margin:0;font-family:var(--font-serif);font-size:var(--text-body);text-align:right;color:var(--ink)}.result-row__value--moss{color:var(--moss)}.result-row__value--coral{color:var(--coral)}.results__details{border-top:1px solid var(--ink-08);padding-top:12px}.results__summary{cursor:pointer;padding:4px 0;list-style:none}.results__summary::-webkit-details-marker{display:none}.results__summary:before{content:"▸ "}.results__details[open] .results__summary:before{content:"▾ "}.results__details .result-rows{padding-top:12px}.results__stamp{margin-top:16px}.results__again{width:100%;padding:14px 18px;font-family:var(--font-serif);font-size:var(--text-body);font-weight:700}.module-card{display:grid;gap:14px}.module-card__note{margin:0}.module-card__badge{flex:none;white-space:nowrap}.endless-toggle{-webkit-appearance:none;-moz-appearance:none;appearance:none;flex:none;border:1px solid var(--ink-12);background:transparent;color:var(--ink-54);border-radius:999px;padding:6px 12px;cursor:pointer;touch-action:manipulation}.endless-toggle[data-on=true]{background:var(--gold-wash);border-color:#f2c24a8c;color:var(--ink)}.level-list{list-style:none;margin:0;padding:0;display:grid;gap:8px;counter-reset:level}.level-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;width:100%;padding:12px 14px;text-align:left;background:var(--option-surface);font-family:var(--font-serif);font-size:var(--text-body)}.level-row__index{width:1.4em;color:var(--ink-34);font-size:var(--text-caption)}.level-row__title{font-weight:600}.level-row__state{flex:none}.level-row[data-state=passed]{border-color:#477a5966}.level-row[data-state=passed] .level-row__state{color:var(--moss)}.level-row[data-state=locked]{opacity:.45;cursor:default;box-shadow:none}.ear-figure{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;width:100%;text-align:center}.listen-glyph{width:132px;max-width:62%;height:auto;overflow:visible}.ear-figure__context{margin:0;font-family:var(--font-serif);font-size:var(--text-title);font-weight:700;letter-spacing:-.01em;color:var(--ink)}.ear-figure__caption{margin:0;text-transform:none;letter-spacing:.06em;color:var(--ink-54)}.tone-slots{display:flex;gap:9px;margin:2px 0 0;padding:0;list-style:none}.tone-slots__slot{width:13px;height:13px;border-radius:50%;border:var(--hairline) solid var(--ink-34);background:var(--gold-wash)}.stage--intro{background:#fefdf9eb;border-color:#f2c24a8c}.intro__copy{flex-direction:column;gap:10px;max-width:30ch;margin:0 auto;text-align:center}.intro__prompt{margin:0;font-size:var(--text-title)}.intro__sub{margin:0}.intro__dots{display:flex;gap:7px;margin:4px 0 0;padding:0;list-style:none}.intro__dot{width:7px;height:7px;border-radius:50%;background:var(--ink-12)}.intro__dot[data-done=true]{background:var(--gold)}.play-surface__intro-actions{position:absolute;left:50%;transform:translate(-50%);bottom:calc(35% + 18px);display:flex;gap:8px;z-index:3}.play-surface__intro-actions .play-surface__hint{position:static;transform:none}.play-surface__replay{position:absolute;right:14px;top:50px;z-index:3;padding:6px 12px;border-radius:999px;border:1px solid var(--gold);background:var(--gold-wash);color:var(--ink-72);text-transform:uppercase}.scale-arc{width:148px;max-width:66%;height:auto;overflow:visible}.scale-figure{gap:8px}.play-surface__mode-call{position:absolute;left:50%;transform:translate(-50%);bottom:calc(35% + 18px);display:flex;gap:10px;z-index:3}.mode-call__button{padding:10px 22px;border-radius:999px;border:1px solid var(--ink-34);background:var(--card-surface);box-shadow:var(--shadow-card);font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}.stage--improv{background:#f7faf4f0;border-color:#6b8a5a73}.improv__copy{flex-direction:column;gap:10px;max-width:30ch;margin:0 auto;text-align:center}.improv__title{margin:0;font-size:var(--text-title)}.improv__sub{margin:0;color:var(--ink-72)}.improv__pulse{width:14px;height:14px;border-radius:50%;background:var(--ink-12);border:var(--hairline) solid var(--ink-34)}.improv__pulse[data-running=true]{background:var(--moss);border-color:var(--moss);animation:improv-pulse 1.62s ease-in-out infinite}@keyframes improv-pulse{0%,to{transform:scale(1);opacity:.75}50%{transform:scale(1.35);opacity:1}}.improv__note{margin:0;text-transform:none;letter-spacing:.06em;color:var(--ink-54)}@media (prefers-reduced-motion: reduce){.improv__pulse[data-running=true]{animation:none}}.track-block{display:grid;gap:8px}.track-block__stamp>span{font-size:var(--text-micro);color:var(--ink-54)}.module-card__improv{display:inline-block;align-self:start;margin-top:2px;padding:7px 14px;border-radius:999px;border:1px solid var(--moss);background:#6b8a5a1a;color:var(--ink-72);text-decoration:none;text-transform:uppercase}:root{--band-new: transparent;--band-practicing: rgba(71, 122, 89, .24);--band-stable: rgba(71, 122, 89, .58);--band-automatic: #477a59;--band-outline: rgba(26, 28, 31, .22);--chart-line: #4769c4;--chart-band: rgba(71, 105, 196, .12);--chart-grid: rgba(26, 28, 31, .09);--chart-accuracy: #477a59}.progress .card{overflow:hidden}.progress__kicker{margin-bottom:10px;align-items:flex-start}.progress__lede{margin:0 0 14px}.progress__stamp{margin:16px 0 8px}.progress__detail{margin:10px 0 0;color:var(--ink-54);text-transform:none;letter-spacing:.04em}.progress__cta{margin-top:16px}.progress__footnote{margin:0;text-align:center;text-transform:none;letter-spacing:.06em;color:var(--ink-34)}.progress__table{margin-top:12px}.progress__table>summary{cursor:pointer;padding:8px 0;list-style:none;color:var(--ink-54)}.progress__table>summary::-webkit-details-marker{display:none}.progress__table>summary:before{content:"▸ "}.progress__table[open]>summary:before{content:"▾ "}.capability-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.capability-list__item{font-family:var(--font-serif);font-size:var(--text-headline);line-height:1.3;color:var(--ink);padding-left:16px;position:relative}.capability-list__item:before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--gold)}.capability-list__item[data-kind=band]:before{background:var(--moss)}.capability-list__item[data-kind=streak]:before{background:var(--coral)}.capability-list__item[data-kind=invite]{font-size:var(--text-body);color:var(--ink-72)}.capability-list__item[data-kind=invite]:before{background:var(--ink-12)}.heatmap-block{margin-bottom:14px}.heatmap-block__stamp{margin-bottom:4px}.heatmap{display:block;width:100%;height:auto;overflow:visible}.heatmap__lines line,.heatmap__ledger{stroke:var(--ink-34);stroke-width:.9;stroke-linecap:butt}.heatmap__clef path{stroke:var(--ink);stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}.heatmap__clef .glyph--filled{fill:var(--ink)}.heatmap__clef circle{fill:var(--ink)}.heatmap__cell{cursor:pointer}.heatmap__cell:focus{outline:none}.heatmap__cell:focus-visible .heatmap__head{stroke:var(--cobalt);stroke-width:1.4}.heatmap__hit{fill:transparent}.heatmap__head{fill:var(--band-new);stroke:var(--band-outline);stroke-width:.9;transition:fill .16s var(--ease-spring)}.heatmap__cell[data-band=practicing] .heatmap__head{fill:var(--band-practicing);stroke:none}.heatmap__cell[data-band=stable] .heatmap__head{fill:var(--band-stable);stroke:none}.heatmap__cell[data-band=automatic] .heatmap__head{fill:var(--band-automatic);stroke:none}.heatmap__ring{fill:none;stroke:var(--cobalt);stroke-width:1.3}.heatmap__tick{font-family:var(--font-mono);font-size:5.4px;font-weight:700;letter-spacing:.04em;fill:var(--ink-34)}.heat-legend{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;margin:4px 0 0;padding:0}.heat-legend li{display:flex;align-items:center;gap:6px}.heat-legend__swatch{width:13px;height:10px;border-radius:50%;transform:rotate(-22deg);background:var(--band-new);border:1px solid var(--band-outline)}.heat-legend__swatch[data-band=practicing]{background:var(--band-practicing);border-color:transparent}.heat-legend__swatch[data-band=stable]{background:var(--band-stable);border-color:transparent}.heat-legend__swatch[data-band=automatic]{background:var(--band-automatic);border-color:transparent}.heat-legend__label{text-transform:none;letter-spacing:.05em}.rank-list{list-style:none;margin:0;padding:0}.rank-row{display:flex;align-items:center;gap:10px;width:100%;padding:9px 4px;background:none;border:none;border-bottom:1px solid var(--ink-08);text-align:left;cursor:pointer;color:inherit}.rank-list li:last-child .rank-row{border-bottom:none}.rank-row[data-selected=true]{background:var(--cobalt-wash);border-radius:10px}.rank-row__dot{width:12px;height:9px;border-radius:50%;transform:rotate(-22deg);flex:0 0 auto;background:var(--band-new);border:1px solid var(--band-outline)}.rank-row__dot[data-band=practicing]{background:var(--band-practicing);border-color:transparent}.rank-row__dot[data-band=stable]{background:var(--band-stable);border-color:transparent}.rank-row__dot[data-band=automatic]{background:var(--band-automatic);border-color:transparent}.rank-row__name{flex:1;font-family:var(--font-serif);font-size:var(--text-body)}.rank-row__clef{flex:0 0 auto;text-transform:none;letter-spacing:.05em;color:var(--ink-34)}.rank-row__value{font-size:var(--text-caption);color:var(--ink-54)}.track-row__head{flex-wrap:wrap}.track-row__title{flex:1 1 auto;min-width:0}.segmented{display:flex;gap:4px;padding:3px;margin-bottom:12px;background:var(--option-surface);border:1px solid var(--ink-12);border-radius:var(--radius-control)}.segmented__item{flex:1;padding:8px 4px;border:none;border-radius:12px;background:transparent;color:var(--ink-54);cursor:pointer;text-transform:none;letter-spacing:.05em}.segmented__item[data-on=true]{background:var(--card-surface);color:var(--ink);box-shadow:var(--shadow-card-pressed)}.trend{display:block}.trend__plot{display:block;width:100%;height:auto}.trend__plot--accuracy{margin-top:2px}.trend__grid line{stroke:var(--chart-grid);stroke-width:1}.trend__target{stroke:var(--chart-accuracy)!important;stroke-opacity:.4}.trend__tick{font-family:var(--font-mono);font-size:8px;font-weight:700;font-variant-numeric:tabular-nums;fill:var(--ink-34)}.trend__band{fill:var(--chart-band)}.trend__line{fill:none;stroke:var(--chart-line);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.trend__line--accuracy{stroke:var(--chart-accuracy)}.trend__dot{fill:var(--chart-line);stroke:var(--card-surface);stroke-width:2}.trend__dot--accuracy{fill:var(--chart-accuracy)}.trend__endlabel{font-family:var(--font-mono);font-size:9px;font-weight:700;font-variant-numeric:tabular-nums;fill:var(--ink-72)}.trend__hit{fill:transparent;cursor:pointer}.trend__hit[data-selected=true]{fill:var(--cobalt-wash)}.trend__legend{list-style:none;display:flex;flex-wrap:wrap;gap:6px 14px;margin:8px 0 0;padding:0}.trend__legend li{display:flex;align-items:center;gap:6px}.trend__legend .mono-label{text-transform:none;letter-spacing:.05em}.trend__key{width:14px;height:10px;flex:0 0 auto}.trend__key--line{height:2px;background:var(--chart-line);border-radius:2px}.trend__key--band{background:var(--chart-band);border:1px solid rgba(71,105,196,.3);border-radius:2px}.trend__key--accuracy{height:2px;background:var(--chart-accuracy);border-radius:2px}.track-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:16px}.track-row__head{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.track-row__title{font-family:var(--font-serif);font-size:var(--text-body);font-weight:700}.track-row__level{text-transform:none;letter-spacing:.04em;text-align:right}.track-row__meters{display:flex;flex-direction:column;gap:6px;margin:8px 0 6px}.track-row[data-locked=true]{opacity:.62}.track-row__note{margin:0;font-family:var(--font-serif);font-size:var(--text-caption);color:var(--ink-54)}.meter{display:flex;align-items:center;gap:10px}.meter__track{flex:1 1 auto;height:6px;border-radius:3px;background:var(--moss-wash);overflow:hidden}.meter__fill{height:100%;border-radius:3px;background:var(--gold);transition:width .22s var(--ease-spring)}.meter[data-met=true] .meter__fill{background:var(--moss)}.meter__label{flex:0 0 auto;min-width:108px;text-align:right;text-transform:none;letter-spacing:.04em;font-variant-numeric:tabular-nums}.nag{display:flex;flex-direction:column;gap:10px;padding:14px 16px;border-radius:var(--radius-control);background:var(--gold-wash);border:1px solid rgba(242,194,74,.5)}.nag--urgent{background:var(--coral-wash);border-color:#fa6b5e80}.nag__text{margin:0;font-family:var(--font-serif);font-size:var(--text-body);line-height:1.4}.nag__actions{display:flex;gap:8px}.button-row{display:flex;gap:10px;margin-top:4px}.button-secondary{flex:1;padding:13px 12px;border-radius:var(--radius-control);background:var(--option-surface);border:var(--hairline) solid var(--ink-34);color:var(--ink);font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;text-align:center}.button-secondary--danger{border-color:#fa6b5e99;color:var(--coral)}.button-secondary[disabled]{opacity:.5;cursor:default}.settings__note{margin:10px 0 0;font-family:var(--font-serif);font-size:var(--text-caption);color:var(--ink-54)}.settings__note--error{color:var(--coral)}.settings__note--ok{color:var(--moss)}.settings__file{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.disclosure>summary{cursor:pointer;padding:12px 2px;list-style:none;font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-54)}.disclosure>summary::-webkit-details-marker{display:none}.disclosure>summary:before{content:"▸ "}.disclosure[open]>summary:before{content:"▾ "}.tunable-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 2px;border-bottom:1px solid var(--ink-08)}.tunable-row__label{flex:1;font-family:var(--font-mono);font-size:var(--text-micro);letter-spacing:.04em;color:var(--ink-72);overflow-wrap:anywhere}.tunable-row__input{flex:0 0 92px;padding:7px 8px;border-radius:10px;border:1px solid var(--ink-12);background:var(--option-surface);font-family:var(--font-mono);font-size:var(--text-caption);font-variant-numeric:tabular-nums;color:var(--ink);text-align:right}.tunable-row[data-overridden=true] .tunable-row__input{border-color:var(--cobalt);color:var(--cobalt)}@media (prefers-reduced-motion: reduce){.heatmap__head,.meter__fill{transition:none}}.streak-flame{display:inline-flex;align-items:center;gap:3px;color:var(--flame-tint, var(--gold));line-height:1}.streak-flame__glyph{width:var(--flame-size, 10px);height:calc(var(--flame-size, 10px) * 1.25);fill:currentColor;flex:none;transform-origin:center bottom;filter:drop-shadow(0 0 var(--flame-glow, 2px) rgb(from currentColor r g b / var(--flame-glow-alpha, 0)))}@supports not (color: rgb(from red r g b / 50%)){.streak-flame__glyph{filter:drop-shadow(0 0 var(--flame-glow, 2px) rgba(242,194,74,.5))}}.streak-flame__core{fill:var(--paper);opacity:.55}.streak-flame[data-animating=true] .streak-flame__glyph{animation:streak-swell var(--flame-pulse, 1.2s) ease-in-out infinite}@keyframes streak-swell{0%,to{transform:scale(1)}50%{transform:scale(var(--flame-swell, 1.1))}}.streak-flame__count{font-size:var(--flame-count-size, 13px);font-weight:800;color:currentColor}.streak-flame__badge{font-family:var(--font-mono);font-size:8px;font-weight:900;letter-spacing:.08em;padding:2px 5px;border-radius:999px;background:color-mix(in srgb,currentColor 22%,transparent);color:currentColor}@supports not (background: color-mix(in srgb,red 50%,blue)){.streak-flame__badge{background:var(--gold-wash)}}.streak-flame__best{font-family:var(--font-mono);font-size:9px;font-weight:700;color:var(--ink-34)}@media (prefers-reduced-motion: reduce){.streak-flame[data-animating=true] .streak-flame__glyph{animation:none}}.hud{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:12px;padding:10px 14px;border-radius:var(--radius-control);background:var(--option-surface);border:1px solid var(--ink-12);min-height:44px;box-sizing:border-box}.stopwatch{display:flex;align-items:baseline;gap:8px;min-width:0}.stopwatch__value{font-size:20px;letter-spacing:-.01em;color:var(--ink);min-width:5.2ch}.stopwatch__average{font-size:var(--text-micro);font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-54);white-space:nowrap}.stopwatch--frozen .stopwatch__value{color:var(--ink-72)}.stopwatch--beat .stopwatch__value,.stopwatch--beat .stopwatch__average{color:var(--moss)}.hud__tally{white-space:nowrap;color:var(--ink-72)}.kbd{position:relative;display:block;width:100%;height:100%;min-height:168px;padding:7px 7px 9px;background:linear-gradient(180deg,#34373c,#202226 55%,#17191c);border-radius:14px 14px 22px 22px;box-shadow:inset 0 2px 6px #00000080,var(--shadow-card);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;overflow:hidden}.kbd__keys{position:absolute;top:7px;right:7px;bottom:9px;left:7px;display:flex;gap:3px}.kbd__key{position:relative;-webkit-appearance:none;-moz-appearance:none;appearance:none;margin:0;padding:0;border:0;font:inherit;color:var(--ink-54);cursor:pointer;touch-action:none;transform-origin:center top;transition:transform var(--dur-press) var(--ease-spring),box-shadow var(--dur-press) var(--ease-spring),filter var(--dur-press) linear}.kbd__key:focus-visible{outline:2px solid var(--cobalt);outline-offset:-3px;z-index:3}.kbd__key--white{flex:1 1 0;min-width:0;height:100%;background:linear-gradient(180deg,#fffdf6,#f9f5ea 72%,#ece5d4);border-radius:3px 3px 9px 9px;box-shadow:0 3px #c9c1ad,0 5px 9px #0000004d}.kbd__key--black{position:absolute;top:0;height:62%;z-index:2;color:#f5f0e39e;background:linear-gradient(180deg,#4a4e55,#26282d 62%,#101215);border-radius:2px 2px 7px 7px;box-shadow:0 3px #08090b,0 6px 10px #00000080}.kbd__key--white[data-pressed=true]{transform:scale(var(--press-scale));box-shadow:0 1px #c9c1ad,0 2px 4px #00000047;filter:brightness(.965)}.kbd__key--black[data-pressed=true]{transform:scale(var(--press-scale));box-shadow:0 1px #08090b,0 2px 5px #00000073;filter:brightness(1.35)}.kbd__key:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:0;border-radius:inherit;background:var(--key-glow, transparent);opacity:var(--key-level, 1);transition:background-color .12s linear,opacity .12s linear;pointer-events:none}.kbd__key:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;border-radius:inherit;background:transparent;transition:background-color var(--dur-press) linear;pointer-events:none}.kbd__key--white[data-pressed=true]:before{background:#4769c438}.kbd__key--black[data-pressed=true]:before{background:#7a9cf080}.kbd__key--white[data-state=lit]{--key-glow: rgba(242, 194, 74, .62)}.kbd__key--white[data-state=correct]{--key-glow: rgba(71, 122, 89, .42)}.kbd__key--white[data-state=wrong]{--key-glow: rgba(250, 107, 94, .42)}.kbd__key--white[data-state=scale]{--key-glow: rgba(71, 105, 196, .3)}.kbd__key--black[data-state=lit]{--key-glow: rgba(242, 194, 74, .88)}.kbd__key--black[data-state=correct]{--key-glow: rgba(71, 122, 89, .85)}.kbd__key--black[data-state=wrong]{--key-glow: rgba(250, 107, 94, .78)}.kbd__key--black[data-state=scale]{--key-glow: rgba(103, 137, 226, .72)}.kbd__key[data-state=lit],.kbd__key[data-state=correct]{z-index:2}.kbd__label{position:absolute;z-index:2;left:0;right:0;bottom:8px;font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.04em;text-align:center;pointer-events:none}.kbd__key--black .kbd__label{bottom:5px;font-size:9px}.kbd--disabled .kbd__key{cursor:default}@media (prefers-reduced-motion: reduce){.kbd__key,.kbd__key:after{transition:none}}.staff{display:block;width:100%;height:100%;overflow:visible;color:var(--ink)}.staff__lines line,.staff__ledgers line{stroke:var(--ink-72);stroke-width:1.4;stroke-linecap:round}.staff__ledgers line{stroke:var(--ink);stroke-width:1.7}.staff__clef path{stroke:currentColor;stroke-linecap:round;stroke-linejoin:round}.staff__clef path.glyph--filled{fill:currentColor;stroke:none}.staff__clef circle{fill:currentColor}.staff__note{color:var(--ink)}.staff__note--moss{color:var(--moss)}.staff__note--coral{color:var(--coral)}.staff__note--cobalt{color:var(--cobalt)}.staff__note--gold{color:var(--gold)}.staff__note ellipse{fill:currentColor}.staff__note line{stroke:currentColor;stroke-width:1.7;stroke-linecap:round}.staff__note path{stroke:currentColor;stroke-linecap:round;stroke-linejoin:round}.gallery{display:flex;flex-direction:column;gap:22px;padding-bottom:24px}.gallery__section{display:flex;flex-direction:column;gap:12px}.gallery__keyboard-box{height:230px}.gallery__controls{display:flex;flex-wrap:wrap;gap:6px}.gallery__chip{padding:7px 11px;font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.08em;text-transform:uppercase;border-radius:999px}.gallery__chip[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:transparent}.gallery__readout{display:flex;flex-direction:column;gap:4px;padding:10px 12px;border-radius:var(--radius-control);background:var(--option-surface);border:1px solid var(--ink-12);font-family:var(--font-mono);font-size:var(--text-caption)}.gallery__readout dt{font-size:var(--text-micro);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-54)}.gallery__readout dd{margin:0 0 6px;font-variant-numeric:tabular-nums;min-height:1.1em;word-break:break-word}.gallery__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.gallery__tile{display:flex;flex-direction:column;gap:6px;padding:8px 8px 10px;border-radius:var(--radius-control);background:var(--card-surface);border:1px solid var(--ink-12)}.gallery__tile-staff{height:150px}.gallery__tile-id{font-family:var(--font-mono);font-size:var(--text-micro);font-weight:700;letter-spacing:.06em;color:var(--ink);text-align:center}.gallery__tile-why{font-family:var(--font-mono);font-size:9px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-54);text-align:center}.gallery__stage{height:260px;padding:10px 0}