:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4f1ea;--surface:#fbfaf6;--surface-2:#ece8df;--line:#ddd7ca;--line-strong:#c4bcab;--ink:#1d1b17;--ink-2:#57524a;--ink-3:#8a8377;--signal:#d97706;--good:#2e7d5b;--bad:#b42318;--focus:#d97706;--scrim:#1d1b1752;--shadow-pop:0 1px 2px #1d1b170f, 0 8px 24px #1d1b171f;--key-white:#fcfbf8;--key-white-shade:#e4dfd4;--key-black:#1b1a18;--key-black-highlight:#3a3834;--deg-l:.6;--deg-c:.14;--deg-1:oklch(var(--deg-l) var(--deg-c) 270);--deg-b2:oklch(var(--deg-l) var(--deg-c) 125);--deg-2:oklch(var(--deg-l) var(--deg-c) 320);--deg-b3:oklch(var(--deg-l) var(--deg-c) 165);--deg-3:oklch(var(--deg-l) var(--deg-c) 25);--deg-4:oklch(var(--deg-l) var(--deg-c) 240);--deg-s4:oklch(var(--deg-l) var(--deg-c) 95);--deg-5:oklch(var(--deg-l) var(--deg-c) 295);--deg-b6:oklch(var(--deg-l) var(--deg-c) 145);--deg-6:oklch(var(--deg-l) var(--deg-c) 350);--deg-b7:oklch(var(--deg-l) var(--deg-c) 210);--deg-7:oklch(var(--deg-l) var(--deg-c) 60);--font-ui:-apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;--font-serif:"Source Serif 4", "Source Serif Pro", Georgia, serif;--r-sm:4px;--r-md:8px;--s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:24px;--s-6:32px;--s-7:48px;--control-h:32px;--ease:cubic-bezier(.2, 0, 0, 1);font-family:var(--font-ui);color:var(--ink);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.5}@media (pointer:coarse){:root{--control-h:44px}}[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#121110;--surface:#1a1917;--surface-2:#242220;--line:#2f2d2a;--line-strong:#45423d;--ink:#ece8e0;--ink-2:#a9a398;--ink-3:#6f6a62;--signal:#f59e0b;--good:#4caf84;--bad:#f0584a;--focus:#f59e0b;--scrim:#0000008c;--shadow-pop:0 1px 2px #0006, 0 12px 32px #00000080;--key-white:#e9e5dc;--key-white-shade:#b9b3a7;--key-black:#0c0b0a;--key-black-highlight:#2c2a27;--deg-l:.72;--deg-c:.13}@font-face{font-family:"Source Serif 4";src:url(/mmm/fonts/SourceSerif4-Variable-latin.woff2)format("woff2-variations");font-weight:400 600;font-style:normal;font-display:swap}*{box-sizing:border-box}html{background:var(--bg)}body{background:var(--bg);min-height:100vh;color:var(--ink);margin:0}#root{height:100dvh}h1,h2,h3,p,strong{font-family:inherit;font-weight:inherit;color:inherit;margin:0}h1,h2,h3{font-weight:600}.eyebrow{color:var(--ink-3);font-size:12px}button{appearance:none;border-radius:var(--r-sm);color:var(--ink-2);font:inherit;min-height:var(--control-h);padding:0 var(--s-3);cursor:pointer;transition:background-color .12s var(--ease), color .12s var(--ease);background:0 0;border:0}button:hover{background:var(--surface-2);color:var(--ink)}button:disabled{opacity:.4;cursor:not-allowed;background:0 0}button.primary,button.primary:hover{background:var(--ink);color:var(--bg)}:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.icon-button{width:var(--control-h);min-width:var(--control-h);height:var(--control-h);justify-content:center;align-items:center;padding:0;display:inline-flex}.icon-button svg{width:18px;height:18px}.icon-button[aria-pressed=true]{background:var(--surface-2);color:var(--ink)}.seg{height:var(--control-h);border:1px solid var(--line-strong);border-radius:var(--r-sm);background:var(--surface);align-items:stretch;display:inline-flex;overflow:hidden}.seg-option{height:auto;min-height:0;padding:0 var(--s-3);white-space:nowrap;color:var(--ink-2);border:0;border-radius:0;font-size:13px}.seg-option+.seg-option{border-left:1px solid var(--line)}.seg-option[aria-pressed=true],.seg-option[aria-pressed=true]:hover{background:var(--ink);color:var(--bg)}.seg-fill{flex:auto;width:100%;display:flex}.seg-fill .seg-option{padding-inline:var(--s-2);flex:1 1 0}.switch{cursor:pointer;flex:none;width:38px;height:22px;display:inline-flex;position:relative}.switch input{opacity:0;cursor:pointer;margin:0;position:absolute;inset:0}.switch-track{border:1px solid var(--line-strong);background:var(--surface-2);transition:background-color .12s var(--ease), border-color .12s var(--ease);border-radius:999px;position:absolute;inset:0}.switch-track:after{content:"";background:var(--surface);width:16px;height:16px;box-shadow:inset 0 0 0 1px var(--line-strong);transition:transform .12s var(--ease);border-radius:50%;position:absolute;top:2px;left:2px}.switch input:checked+.switch-track{background:var(--ink);border-color:var(--ink)}.switch input:checked+.switch-track:after{background:var(--bg);box-shadow:none;transform:translate(16px)}.switch input:focus-visible+.switch-track{outline:2px solid var(--focus);outline-offset:2px}.stepper{height:var(--control-h);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);align-items:center;display:inline-flex}.stepper-button{border-radius:0;width:26px;min-width:26px;height:100%;min-height:0;padding:0;font-size:15px;line-height:1}.stepper-value{width:36px;color:var(--ink);font:inherit;font-variant-numeric:tabular-nums;text-align:center;appearance:textfield;background:0 0;border:0;padding:0;font-size:13px}.stepper-value::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.stepper-value::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.stepper-value:focus-visible{outline-offset:-2px}.practice-screen{background:var(--bg);grid-template-rows:auto auto minmax(0,1fr);height:100dvh;display:grid;overflow:hidden}.progress-screen{background:var(--bg);min-height:100dvh;color:var(--ink)}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.practice-topbar{align-items:center;gap:var(--s-4);height:auto;min-height:64px;padding-block:10px;padding-inline:var(--s-4);border-bottom:1px solid var(--line);grid-template-columns:minmax(max-content,1fr) minmax(0,auto) minmax(max-content,1fr);display:grid}.topbar-wordmark{font-family:var(--font-serif);color:var(--ink);white-space:nowrap;grid-column:1;font-size:17px;font-weight:600}.topbar-wordmark-compact{display:none}.topbar-nav{align-items:center;gap:var(--s-1);grid-column:2;justify-self:center;min-width:0;max-width:100%;display:flex}.topbar-nav-center{flex-direction:column;align-items:center;gap:1px;min-width:0;display:flex}.topbar-nav-row{align-items:baseline;gap:12px;min-width:0;max-width:100%;display:flex}.walkthrough-anchor.nav-progression-slot{flex:0 auto;width:auto;min-width:0}.walkthrough-anchor.nav-key-slot{flex:none;width:auto}.nav-progression{font-family:var(--font-serif);color:var(--ink);padding:0 var(--s-2);text-overflow:ellipsis;white-space:nowrap;max-width:100%;min-height:0;font-size:22px;font-weight:400;line-height:1.05;overflow:hidden}.nav-key{font-family:var(--font-serif);color:var(--ink-2);padding:0 var(--s-1);white-space:nowrap;min-height:0;font-size:15px;line-height:1.2}.nav-key:hover{color:var(--ink);background:0 0}.topbar-nav-sub{color:var(--ink-2);padding:0 var(--s-2);text-overflow:ellipsis;white-space:nowrap;max-width:100%;min-height:0;font-size:12px;line-height:1.2;overflow:hidden}.nav-chevron{padding:0 var(--s-1)}@media (width<=1000px){.practice-topbar{gap:var(--s-2)}.topbar-wordmark-full{display:none}.topbar-wordmark-compact{display:inline}}@media (width<=900px){.stepper-button{display:none}}@media (width<=760px){.topbar-wordmark{display:none}}.topbar-actions{align-items:center;gap:var(--s-2);grid-column:3;justify-self:end;display:flex}.input-indicator{align-items:center;gap:var(--s-2);max-width:160px;font-size:13px;display:inline-flex}.input-indicator-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.input-dot{background:var(--ink-3);border-radius:50%;flex:none;width:6px;height:6px}.input-dot[data-state=ready]{background:var(--good)}.input-dot[data-state=error]{background:var(--bad)}.stats-line{align-items:baseline;gap:var(--s-2);padding:var(--s-2) var(--s-4) 0;color:var(--ink-3);font-variant-numeric:tabular-nums;min-height:0;font-size:13px;display:flex}.stats-value{color:var(--ink-2)}.stats-value.is-good{color:var(--good)}.stats-value.is-bad{color:var(--bad)}@keyframes picker-in{0%{opacity:0;transform:translateY(4px)}}.exercise-picker-overlay{padding:84px var(--s-4) var(--s-4);background:var(--scrim);z-index:18;place-items:start center;display:grid;position:fixed;inset:0}.exercise-picker-window{border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);width:min(620px,100%);max-height:min(76vh,760px);box-shadow:var(--shadow-pop);padding:var(--s-4);gap:var(--s-4);animation:picker-in .2s var(--ease);display:grid;overflow:auto}.exercise-picker-window-wide{width:min(760px,100%)}.exercise-picker-window-compact{max-height:min(82vh,860px)}.exercise-picker-window-content{width:min(880px,100%);max-height:min(88vh,940px)}.exercise-picker-header{justify-content:space-between;gap:var(--s-4);align-items:start;display:flex}.exercise-picker-header h3{font-size:15px}.exercise-picker-list{gap:var(--s-2);display:grid}.picker-item{gap:var(--s-4);width:100%;padding:var(--s-3);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);text-align:left;min-height:var(--control-h);grid-template-columns:minmax(0,1fr) auto;align-items:center;display:grid}.picker-item:hover{background:var(--surface-2)}.picker-item.is-selected{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.picker-item:disabled{color:var(--ink-3)}.picker-item-copy{gap:2px;min-width:0;display:grid}.picker-item-copy strong{font-family:var(--font-serif);color:var(--ink);font-size:17px;font-weight:400}.picker-item-copy span{color:var(--ink-3);font-size:12px}.picker-item-meta{text-align:right;white-space:nowrap;color:var(--ink-3);justify-items:end;gap:2px;font-size:12px;display:grid}.picker-item-meta strong{color:var(--ink-2);font-variant-numeric:tabular-nums;font-weight:400}.picker-item.is-mastered .picker-item-meta strong{color:var(--good)}.picker-grid{gap:var(--s-2);grid-template-columns:repeat(auto-fill,minmax(120px,1fr));display:grid}.picker-cell{padding:var(--s-2) var(--s-3);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);text-align:left;min-height:var(--control-h);align-content:start;gap:2px;display:grid}.picker-cell:hover{background:var(--surface-2)}.picker-cell.is-selected{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.picker-cell strong{color:var(--ink);font-weight:400}.picker-cell span{color:var(--ink-3);font-size:12px}.picker-cell:disabled{color:var(--ink-3)}.exercise-picker-circle .circle-panel{width:min(100%,408px);margin-inline:auto}.exercise-picker-window-compact .exercise-picker-circle .circle-panel{width:min(100%,372px);min-height:286px;padding:0}.exercise-picker-window-compact .exercise-picker-circle .circle-panel svg{width:min(100%,306px)}.exercise-picker-section-head{justify-content:space-between;align-items:start;gap:var(--s-4);display:flex}.notation-strip{flex-direction:column;flex:1 1 0;justify-content:flex-start;align-items:flex-start;min-width:0;min-height:360px;display:flex;position:relative;overflow:auto hidden}.notation-strip.improvisation.bass{min-height:408px}.notation-strip.improvisation.treble{min-height:412px}.notation-strip-canvas{order:-1;justify-content:center;width:100%;display:flex}.notation-scale-hud{margin-top:var(--s-4);gap:var(--s-1);pointer-events:none;justify-items:start;padding-inline-start:160px;display:grid}.notation-scale-hud p{align-items:baseline;gap:0 var(--s-2);color:var(--ink-2);flex-wrap:wrap;font-size:13px;display:inline-flex}.notation-scale-row.next{opacity:.72}.notation-scale-tag{color:var(--ink-3);font-size:12px}.notation-scale-summary{align-items:baseline;gap:0 var(--s-2);font-family:var(--font-serif);color:var(--ink);flex-wrap:wrap;font-size:15px;display:inline-flex}.notation-scale-main{align-items:baseline;gap:0 var(--s-1);flex-wrap:wrap;display:inline-flex}.notation-scale-root,.notation-scale-primary{color:var(--ink);font-weight:600}.notation-scale-alternates{color:var(--ink-3);font-family:var(--font-ui);font-size:12px}.notation-strip.empty{padding:var(--s-3);color:var(--ink-3);justify-content:center;align-items:center;font-size:13px}.practice-workstack{gap:var(--s-3) var(--s-6);grid-template:"notation circle"minmax(0,1fr)"keyboard keyboard"/minmax(0,1fr) 300px;grid-row:-2;height:100%;min-height:0;display:grid}.practice-workstack.is-circle-hidden{grid-template-columns:minmax(0,1fr);grid-template-areas:"notation""keyboard"}html[data-immersive=true] .practice-workstack{grid-template-columns:minmax(0,1fr) 320px}html[data-immersive=true] .practice-workstack.is-circle-hidden{grid-template-columns:minmax(0,1fr)}.practice-notation-slot{min-width:0;min-height:0;padding-top:var(--s-6);flex-direction:column;grid-area:notation;justify-content:flex-start;display:flex}.flashcard-prompt{min-height:14rem;padding:var(--s-5) var(--s-4);text-align:center;align-content:center;place-items:center;gap:var(--s-3);display:grid}.flashcard-prompt-caption{color:var(--ink-3);margin:0;font-size:12px}.flashcard-prompt strong{font-family:var(--font-serif);letter-spacing:-.01em;font-size:40px;font-weight:600;line-height:1}.flashcard-prompt span{color:var(--ink-2);font-size:13px}.flashcard-prompt.is-revealed{min-height:0;margin-bottom:var(--s-2)}.practice-notation-slot.is-circle-cycle-target{cursor:pointer}.practice-notation-slot.is-circle-cycle-target:focus-visible{outline:2px solid var(--focus);outline-offset:4px}.practice-sidebar{min-width:0;min-height:0;padding-top:var(--s-6);grid-area:circle;justify-content:center;align-self:start;align-items:center;display:flex}.circle-panel{justify-content:center;align-items:center;width:100%;display:flex}.circle-panel svg{width:min(100%,300px);height:auto}.circle-shell,.circle-interval-shell{fill:none;stroke:var(--line);stroke-width:1px}.circle-node{fill:var(--surface);stroke:var(--line-strong);stroke-width:1px}.circle-node.is-current-root{stroke-width:2px}.circle-node.is-selected-tonic{stroke:var(--signal);stroke-width:2.4px}.circle-node.is-excluded-root{opacity:.3}.circle-node-group.is-clickable{cursor:pointer}.circle-node.is-clickable{transition:opacity .12s var(--ease), stroke-width .12s var(--ease)}.circle-node-group.is-clickable:hover .circle-node,.circle-node-group.is-clickable:focus-visible .circle-node{opacity:1;stroke-width:2px}.circle-label{fill:var(--ink);pointer-events:none;font-size:11px}.circle-label.is-muted{fill:var(--ink-3)}.circle-arrow-shaft,.circle-arrow-head{stroke:var(--signal);stroke-width:1.5px;stroke-linecap:round;stroke-linejoin:round;fill:none}.circle-arrow-shaft.is-tonic,.circle-arrow-head.is-tonic{stroke-width:2.4px}.interval-dot{stroke:none}.interval-label{fill:var(--ink-3);pointer-events:none;font-size:11px;font-weight:600}.keyboard-lane{gap:var(--s-1);grid-area:keyboard;align-items:center;width:100vw;max-width:100vw;margin-inline:calc(50% - 50vw);display:grid}.keyboard-lane.is-label-cycle-target{cursor:pointer}.keyboard-lane.is-label-cycle-target:focus-visible{outline:2px solid var(--focus);outline-offset:4px}.piano-view{gap:var(--s-1);width:100%;max-width:100%;margin-inline:auto;display:grid;position:relative}.qwerty-view{gap:var(--s-1);justify-self:center;width:fit-content;max-width:100%;display:grid;position:relative}.qwerty-scale-guide{pointer-events:none;margin-inline:auto}.qwerty-hint-row{gap:var(--s-2);color:var(--ink-3);pointer-events:none;font-size:11px;display:flex}.scale-guide{display:grid}.scale-guide-row{height:17px;position:relative}.scale-guide-marker{height:17px;color:var(--ink-3);white-space:nowrap;justify-content:center;align-items:flex-end;padding-bottom:5px;display:inline-flex;position:absolute;bottom:0;overflow:hidden;transform:translate(-50%)}.scale-guide-marker.is-next{opacity:.62}.scale-guide-marker:after{content:"";opacity:.3;background:currentColor;width:1px;height:5px;position:absolute;bottom:0;left:50%}.scale-guide-label{text-align:center;font-size:11px;font-family:var(--font-ui);font-variant-numeric:tabular-nums;font-weight:400;line-height:1;display:inline-block;position:relative}.scale-guide-body{display:inline-block}.scale-guide-accidental{font-size:.66em;font-weight:600;line-height:1;position:absolute;top:-.24em}.scale-guide-accidental.prefix{margin-right:.03rem;right:100%}.scale-guide-accidental.suffix{margin-left:.02rem;left:100%}.piano-stage{border-top:1px solid var(--line);height:96px;position:relative}.piano-stage.is-playable{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;cursor:pointer}.qwerty-stage{pointer-events:none;height:130px;margin-inline:auto;position:relative}.piano-white-row{align-items:flex-start;height:100%;display:flex}.piano-black-row{width:100%;height:62.5%;position:absolute;top:0;left:0}.piano-key{-webkit-user-select:none;user-select:none;justify-content:center;align-items:flex-end;display:flex;position:relative;overflow:hidden}.piano-key.white{background:var(--key-white);border-right:1px solid var(--key-white-shade);height:100%;box-shadow:inset 0 -2px 0 var(--key-white-shade)}.piano-key.black{background:var(--key-black);height:100%;color:var(--ink-2);box-shadow:inset 0 2px 0 var(--key-black-highlight);z-index:3;position:absolute;top:0}.piano-key.is-pressed{transform:translateY(1px)}.piano-key.white.is-pressed{background:color-mix(in srgb, var(--signal) 24%, var(--key-white))}.piano-key.black.is-pressed{background:color-mix(in srgb, var(--signal) 34%, var(--key-black))}.piano-key.is-hit-correct,.piano-key.is-hit-wrong{background:var(--good);box-shadow:none;color:var(--surface)}.piano-key.is-hit-wrong{background:var(--bad)}.key-scale-band{pointer-events:none;position:absolute;left:2px;right:2px}.key-scale-band.next{background:var(--next-scale-color);opacity:.62;height:3px;top:0}.key-scale-band.current{background:var(--current-scale-color);opacity:.92;height:3px;top:4px}.piano-key.black .key-scale-band.next{top:0;left:1px;right:1px}.piano-key.black .key-scale-band.current{top:4px;left:2px;right:2px}.piano-key.is-hit-correct .key-scale-band,.piano-key.is-hit-wrong .key-scale-band{opacity:.45}.piano-key .key-marker{border-radius:999px;width:8px;height:8px;position:absolute;bottom:8px;left:50%;transform:translate(-50%)}.piano-key.black .key-marker{bottom:6px}.key-marker.chord{background:var(--signal)}.piano-octave-bar{pointer-events:none;justify-content:space-between;align-items:center;display:flex}.piano-octave-button{pointer-events:auto;width:var(--control-h);border-radius:var(--r-sm);height:28px;color:var(--ink-2);cursor:pointer;transition:background .12s var(--ease), color .12s var(--ease);background:0 0;border:none;justify-content:center;align-items:center;padding:0;display:inline-flex}.piano-octave-button:hover:not(:disabled){background:var(--surface-2);color:var(--ink)}.piano-octave-button svg{width:14px;height:14px}.piano-octave-button:disabled{opacity:.35;cursor:default}.rotate-hint{display:none}.rotate-hint svg{width:44px;height:44px}.qwerty-key{justify-content:center;align-items:center;padding-top:1.9rem}.qwerty-key .key-marker{top:16px;bottom:auto}.qwerty-key.black .key-marker{top:12px;bottom:auto}.qwerty-key.white{height:130px;color:var(--ink)}.qwerty-key.black{height:82px}.qwerty-keycap{min-width:1.72rem;height:1.72rem;padding-inline:var(--s-1);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);color:var(--ink);font-family:var(--font-ui);justify-content:center;align-items:center;font-size:13px;font-weight:600;line-height:1;display:inline-flex}.qwerty-key.black .qwerty-keycap{border-color:var(--line-strong);color:var(--ink-2);background:0 0}.piano-key.is-hit-correct .qwerty-keycap,.piano-key.is-hit-wrong .qwerty-keycap{color:inherit;background:0 0;border-color:#0000}.qwerty-note-label{color:var(--ink-3);white-space:nowrap;font-size:.62rem;line-height:1;position:absolute;bottom:7px;left:50%;transform:translate(-50%)}.qwerty-key.white .qwerty-note-label{color:var(--ink-2)}.qwerty-key.black .qwerty-note-label{color:var(--ink-3)}.key-label{color:var(--ink-3);margin-bottom:var(--s-1);z-index:1;font-size:11px;line-height:1;position:relative}@keyframes drawer-in{0%{opacity:0;transform:translate(24px)}}.settings-overlay{background:var(--scrim);z-index:20;justify-content:flex-end;display:flex;position:fixed;inset:0}.settings-drawer{border-left:1px solid var(--line);background:var(--surface);width:min(400px,100%);height:100%;box-shadow:var(--shadow-pop);padding:var(--s-5) var(--s-4);gap:var(--s-5);animation:drawer-in .2s var(--ease);align-content:start;display:grid;overflow-y:auto}.settings-header{justify-content:space-between;align-items:center;gap:var(--s-4);display:flex}.settings-header h2{font-size:17px}.settings-section{gap:var(--s-3);padding-bottom:var(--s-5);border-bottom:1px solid var(--line);display:grid}.settings-section:last-of-type{border-bottom:0;padding-bottom:0}.settings-section>h3{color:var(--ink);font-size:15px}.settings-help{color:var(--ink-3);font-size:12px}.settings-row{justify-content:space-between;align-items:center;gap:var(--s-4);min-height:var(--control-h);display:flex}.settings-row-label{color:var(--ink);flex:0 auto;font-size:15px}.settings-row-control{align-items:center;gap:var(--s-2);flex:auto;justify-content:flex-end;min-width:0;display:flex}.settings-row-control .settings-range{flex:auto}.settings-row-value{color:var(--ink-2);font-variant-numeric:tabular-nums;text-align:right;min-width:34px;font-size:13px}.settings-select{min-width:0;height:var(--control-h);padding:0 var(--s-2);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);color:var(--ink);font:inherit;flex:auto;font-size:13px}.settings-text-input{min-width:0;height:var(--control-h);padding:0 var(--s-3);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);color:var(--ink);font:inherit;flex:auto;font-size:13px}.settings-text-input::placeholder{color:var(--ink-3)}.settings-check-grid{gap:2px var(--s-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.settings-check{align-items:center;gap:var(--s-2);min-height:28px;color:var(--ink-2);cursor:pointer;border-radius:var(--r-sm);padding:0;font-size:13px;display:flex}.settings-check:hover{color:var(--ink);background:0 0}.settings-check input{width:15px;height:15px;accent-color:var(--ink);flex:none;margin:0}.settings-check input:disabled{cursor:not-allowed}.settings-check:has(input:disabled){color:var(--ink-3);cursor:not-allowed}.settings-range{width:100%;accent-color:var(--ink);margin:0}.settings-range-labels{color:var(--ink-3);justify-content:space-between;font-size:12px;display:flex}.settings-actions{align-items:center;gap:var(--s-2);flex-wrap:wrap;display:flex}.settings-meta{color:var(--ink-3);font-size:12px}.settings-meta a{color:var(--ink-2)}.settings-potential{gap:var(--s-3);display:grid}.settings-potential-toggle{justify-content:space-between;align-items:baseline;gap:var(--s-3);color:var(--ink-2);text-align:left;background:0 0;border:0;min-height:0;padding:0;display:flex}.settings-potential-toggle:disabled{color:var(--ink-3)}.settings-potential-toggle strong{color:var(--ink);font-variant-numeric:tabular-nums;font-weight:400}.settings-potential-action{color:var(--ink-3);white-space:nowrap;font-size:12px}.settings-potential-group-list{gap:var(--s-3);display:grid}.settings-potential-group{gap:var(--s-2);padding-top:var(--s-3);border-top:1px solid var(--line);display:grid}.settings-potential-group:first-of-type{border-top:0;padding-top:0}.settings-potential-group-copy{gap:2px;display:grid}.settings-potential-group-copy strong{font-family:var(--font-serif);color:var(--ink);font-size:15px;font-weight:400}.settings-potential-group-copy span{color:var(--ink-3);font-size:12px}.settings-potential-phrase-list{gap:var(--s-1) var(--s-3);flex-wrap:wrap;display:flex}.settings-potential-phrase{color:var(--ink-3);font-size:12px}.settings-lane-grid{gap:var(--s-2);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.settings-lane-card{padding:var(--s-2) var(--s-3);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);text-align:left;min-height:var(--control-h);align-content:start;gap:2px;display:grid}.settings-lane-card:hover{background:var(--surface-2)}.settings-lane-card strong{color:var(--ink);font-weight:400}.settings-lane-card span{color:var(--ink-3);font-size:12px}.settings-lane-card.is-selected{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.settings-lane-card:disabled,.settings-lane-card:disabled strong{color:var(--ink-3)}@media (pointer:coarse){.settings-drawer{border-left:0;width:100%}.settings-check-grid{grid-template-columns:1fr}.settings-check{min-height:var(--control-h)}}.progress-screen{background:var(--bg);height:calc(100vh - 1.4rem);box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;color:var(--ink);font-family:var(--font-ui);border:none;border-radius:0;padding:0;display:block;overflow-y:auto}.progress-body{max-width:960px;padding:var(--s-7) var(--s-5) var(--s-7);margin:0 auto}.progress-screen h1,.progress-screen h2,.progress-screen h3,.progress-screen strong{color:inherit;font-family:inherit}.progress-screen :focus-visible{outline:2px solid var(--focus);outline-offset:2px}.progress-header{justify-content:space-between;align-items:center;gap:var(--s-4);display:flex}.progress-screen .progress-title{font-family:var(--font-serif);font-size:30px;font-weight:600;line-height:1.15}.progress-header-actions{align-items:center;gap:var(--s-2);margin-left:auto;display:flex}.progress-quiet-button{height:var(--control-h);padding:0 var(--s-3);border-radius:var(--r-sm);color:var(--ink-2);transition:background-color .12s var(--ease), color .12s var(--ease);background:0 0;border:none;font-size:13px}.progress-quiet-button:hover{background:var(--surface-2);color:var(--ink)}.progress-screen .icon-button{width:var(--control-h);height:var(--control-h);border-radius:var(--r-sm);color:var(--ink-2);transition:background-color .12s var(--ease), color .12s var(--ease);background:0 0;border:none}.progress-screen .icon-button:hover{background:var(--surface-2);color:var(--ink)}.progress-screen .icon-button svg{width:16px;height:16px}.progress-screen .theme-toggle:after{content:none}.progress-summary{gap:var(--s-4) var(--s-7);margin-top:var(--s-6);flex-wrap:wrap;display:flex}.progress-summary-item{gap:var(--s-1);display:grid}.progress-summary-item strong{letter-spacing:-.01em;font-variant-numeric:tabular-nums;font-size:30px;font-weight:400;line-height:1.1}.progress-summary-item span{color:var(--ink-2);font-size:12px}.progress-lede{max-width:62ch;margin-top:var(--s-5);color:var(--ink-2);font-size:13px}.progress-section{margin-top:var(--s-7);padding-top:var(--s-5);border-top:1px solid var(--line)}.progress-section-heading{justify-content:space-between;align-items:baseline;gap:var(--s-4);display:flex}.progress-section-heading h2{font-size:15px;font-weight:600}.progress-section-note{color:var(--ink-3);font-size:12px}.progress-block-list{margin-top:var(--s-4)}.progress-block+.progress-block{border-top:1px solid var(--line)}.progress-block-row{justify-content:space-between;align-items:center;gap:var(--s-4);width:100%;margin-inline:calc(-1 * var(--s-2));padding:var(--s-3) var(--s-2);text-align:left;font:inherit;color:inherit;cursor:pointer;transition:background-color .12s var(--ease);background:0 0;border:none;border-radius:0;display:flex}.progress-block-row:hover{background:var(--surface-2)}.progress-block-copy{gap:2px;min-width:0;display:grid}.progress-block-copy strong{font-size:15px;font-weight:600}.progress-block-copy>span{color:var(--ink-2);font-size:13px}.progress-block-status{align-items:center;gap:var(--s-3);flex-shrink:0;display:flex}.progress-tag{border:1px solid var(--line-strong);border-radius:var(--r-sm);color:var(--ink-2);white-space:nowrap;padding:3px 6px;font-size:12px;line-height:1}.progress-tag.is-mastered{color:var(--good);border-color:color-mix(in srgb, var(--good) 45%, transparent)}.progress-meter{background:var(--surface-2);width:96px;height:4px}.progress-meter span{background:var(--ink);height:100%;display:block}.progress-number{font-variant-numeric:tabular-nums}.progress-number.is-good{color:var(--good)}.progress-block-details{margin-bottom:var(--s-3)}.progress-block-detail-row{justify-content:space-between;align-items:baseline;gap:var(--s-4);margin-inline:var(--s-2);padding:var(--s-2) 0;font-size:13px;display:flex}.progress-block-detail-row+.progress-block-detail-row{border-top:1px solid var(--line)}.progress-block-detail-value{color:var(--ink-2);font-variant-numeric:tabular-nums;flex-shrink:0}.progress-detail-state{color:var(--ink-3)}.progress-detail-state.is-mastered{color:var(--good)}.progress-columns{gap:var(--s-6) var(--s-7);margin-top:var(--s-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.progress-column h3{color:var(--ink-2);margin-bottom:var(--s-2);font-size:13px;font-weight:600}.progress-list{margin:0;padding:0;list-style:none}.progress-list li{justify-content:space-between;align-items:baseline;gap:var(--s-4);padding:var(--s-2) 0;display:flex}.progress-list li+li{border-top:1px solid var(--line)}.progress-list-copy{gap:2px;min-width:0;display:grid}.progress-list-copy strong{font-family:var(--font-serif);font-size:15px;font-weight:400}.progress-list-copy span{color:var(--ink-3);font-size:12px}.progress-list-metrics{text-align:right;flex-shrink:0;justify-items:end;gap:2px;display:grid}.progress-list-metrics strong{font-size:15px;font-weight:400}.progress-list-metrics span{color:var(--ink-3);font-size:12px}.progress-session-table{width:100%;margin-top:var(--s-4);border-collapse:collapse;font-size:13px}.progress-session-table th{padding:0 0 var(--s-2);border-bottom:1px solid var(--line);text-align:left;color:var(--ink-3);font-size:12px;font-weight:400}.progress-session-table td{padding:var(--s-2) 0;border-bottom:1px solid var(--line);vertical-align:baseline}.progress-session-table tr:last-child td{border-bottom:none}.progress-session-table .num{text-align:right}.progress-session-table td .progress-number{font-size:15px}.progress-session-copy{gap:2px;display:grid}.progress-session-copy strong{font-variant-numeric:tabular-nums;font-weight:400}.progress-session-copy span{color:var(--ink-3);font-size:12px}.progress-empty{margin-top:var(--s-4);color:var(--ink-3);font-size:13px}@media (width<=720px){.progress-body{padding:var(--s-6) var(--s-4)}.progress-title{font-size:22px}.progress-summary{gap:var(--s-4) var(--s-5)}.progress-summary-item strong{font-size:22px}.progress-columns{gap:var(--s-5);grid-template-columns:1fr}.progress-block-row{align-items:flex-start;gap:var(--s-2);flex-direction:column}.progress-block-status{justify-content:flex-start;width:100%}.progress-meter{flex:1;width:auto;min-width:64px}}.walkthrough-anchor{width:100%;min-width:0;position:relative}.walkthrough-anchor-topbar{flex:none;width:auto}.walkthrough-target{z-index:26;box-shadow:0 0 0 2px var(--focus);position:relative}.walkthrough-bubble{top:calc(100% + var(--s-2));z-index:28;width:min(260px,100vw - 2rem);padding:var(--s-3);border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--shadow-pop);gap:var(--s-3);display:grid;position:absolute;left:50%;transform:translate(-50%)}.walkthrough-bubble-inline{z-index:auto;width:100%;position:relative;inset:auto;transform:none}.walkthrough-bubble-end{left:auto;right:0;transform:none}.walkthrough-bubble p{color:var(--ink);font-size:13px;line-height:1.4}.walkthrough-bubble-actions{justify-content:flex-end;align-items:center;gap:var(--s-2);display:flex}.walkthrough-bubble-action{min-width:96px}.walkthrough-bubble-skip{min-height:0;color:var(--ink-3);margin-right:auto;padding:0;font-size:12px}.walkthrough-bubble-skip:hover{color:var(--ink);background:0 0}.walkthrough-overlay{z-index:24;background:var(--scrim);pointer-events:auto;position:fixed;inset:0}@media (pointer:coarse) and (orientation:portrait) and (width<=600px){.rotate-hint{z-index:90;justify-content:center;align-items:center;gap:var(--s-5);padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);background:var(--bg);color:var(--ink);text-align:center;flex-direction:column;display:flex;position:fixed;inset:0}.rotate-hint svg{color:var(--ink-2)}.rotate-hint p{font-family:var(--font-serif);margin:0;font-size:22px;font-weight:600}}@media (width<=720px){.notation-scale-hud{margin-top:var(--s-3);gap:var(--s-1)}.notation-scale-hud p{max-width:100%;font-size:12px}.notation-scale-summary{font-size:13px}.notation-scale-tag{font-size:11px}}@media (width<=980px){.practice-screen{height:auto;min-height:100dvh;overflow:visible}.practice-workstack{grid-template:"notation""keyboard""circle"/minmax(0,1fr);height:auto}.walkthrough-bubble{width:min(220px,100vw - 1.3rem)}.progress-header{flex-wrap:wrap;gap:.65rem}.progress-header-actions{margin-left:auto}.settings-drawer{border-left:0;width:100%}.settings-lane-grid{grid-template-columns:1fr}}@media (pointer:coarse) and (orientation:landscape){.practice-screen{height:100dvh;overflow:hidden}.stats-line{display:none}.practice-workstack{gap:var(--s-2);min-height:0;padding-inline:env(safe-area-inset-left) env(safe-area-inset-right);grid-template:"notation"minmax(0,1fr)"keyboard"/minmax(0,1fr)}.practice-sidebar,.notation-scale-hud{display:none}.practice-notation-slot{min-height:0;padding-top:var(--s-3)}.notation-strip{flex:1 1 0;min-height:0;overflow:hidden}.notation-strip-canvas{align-items:flex-start;height:100%}.notation-strip-canvas svg{width:auto;max-width:100%;height:auto;max-height:100%}.keyboard-lane{padding-inline:env(safe-area-inset-left) env(safe-area-inset-right);padding-bottom:env(safe-area-inset-bottom)}.piano-stage{height:calc(55dvh - 48px)}.piano-octave-bar{order:-1}.scale-guide{display:none}}