:root{--bg: #fbfbfa;--surface: #ffffff;--surface-subtle: #f1f2f4;--text: #14161a;--muted: #5c6370;--line: #dfe1e6;--control-line: #878f9d;--accent: #1a63d6;--accent-strong: #175ac2;--accent-text: #ffffff;--warn: #9a3412;--warn-surface: #fdf3ee;--font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--radius: .875rem;--radius-sm: .625rem;--gutter: clamp(1rem, 4vw, 2rem);--measure: 60rem;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--surface: #171a21;--surface-subtle: #1d2129;--text: #e9ecf1;--muted: #9aa3b2;--line: #2a2f3a;--control-line: #6b7488;--accent: #4c8dff;--accent-strong: #69a0ff;--accent-text: #0b0d11;--warn: #fca5a5;--warn-surface: #251a1a;color-scheme:dark}}@media(prefers-contrast:more){:root{--muted: #33383f;--line: #6a7280;--control-line: #3d4450;--accent: #0b48a8;--accent-strong: #093a8a}@media(prefers-color-scheme:dark){:root{--muted: #d7dce4;--line: #8b93a3;--control-line: #aab2c0;--accent: #8fbaff;--accent-strong: #a9caff;--accent-text: #05070a}}.panel--open,.chip,.button,.reveal,.segmented,.dialog{border-width:2px}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);line-height:1.5;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}h1,h2,p,ul,figure,fieldset{margin:0;padding:0}fieldset{border:0;min-inline-size:0}button,input{font:inherit;color:inherit}img,svg{max-width:100%}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}.app{height:100vh;height:100dvh;overflow:auto;display:flex;flex-direction:column}.app__inner{width:100%;max-width:var(--measure);margin-inline:auto;padding-inline:var(--gutter)}.app__header{border-bottom:1px solid var(--line)}.app__headerInner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:3.75rem;padding-top:max(.5rem,env(safe-area-inset-top));padding-bottom:.5rem}.wordmark{font-size:.8125rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}.app__main,.practice{flex:1 1 auto;min-height:0;display:flex;flex-direction:column}.headline{flex:0 0 auto;text-align:center;padding-block:clamp(1rem,4vh,3rem) clamp(.75rem,2.5vh,1.5rem)}.headline__name{font-size:clamp(2rem,min(10vw,9vh),5.5rem);font-weight:600;line-height:1.02;letter-spacing:-.025em;text-wrap:balance}.headline__meta{margin-top:clamp(.375rem,1.5vh,.875rem);font-size:clamp(.9375rem,min(3.2vw,2.6vh),1.5rem);line-height:1.3;color:var(--muted);text-wrap:balance}.headline__metaItem{white-space:nowrap}.practice__panels{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;gap:.75rem}.panel{display:grid;gap:1rem;justify-items:center;align-content:center}.panel--notation{flex:1 1 0;min-height:5rem;display:flex;flex-direction:column;gap:1rem}.panel--open{justify-items:stretch;padding-block:.5rem}.panel__head{display:flex;justify-content:center;flex-wrap:wrap;gap:.5rem .75rem}.panel__note{text-align:center;font-size:.875rem;color:var(--muted)}.panel__body:empty{display:none}.panel--notation .panel__body--notation{flex:1 1 auto;min-height:0;width:100%;overflow:hidden}.score{color:var(--text);height:100%;min-height:0;display:grid;grid-template-rows:minmax(0,1fr)}.score__canvas{width:100%;height:100%;min-height:0;overflow:hidden;display:flex;align-items:center;justify-content:center}.score__canvas svg{max-width:100%;max-height:100%;width:auto;height:auto;display:block;margin-inline:auto}.score__status{text-align:center;color:var(--muted);font-size:.9375rem}.next-bar{flex:0 0 auto;display:flex;justify-content:center;padding-top:clamp(.75rem,2vh,1.5rem);padding-bottom:max(.75rem,env(safe-area-inset-bottom))}.next{width:100%;max-width:24rem;min-height:4.5rem;padding:.75rem 1.5rem;border:0;border-radius:1rem;background:var(--accent);color:var(--accent-text);font-size:clamp(1.25rem,4.5vw,1.5rem);font-weight:600;letter-spacing:.01em;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;transition:transform .12s ease,background-color .12s ease}.next:hover{background:var(--accent-strong)}.next:active{background:var(--accent-strong);transform:scale(.985)}.next:focus-visible{outline-offset:3px}.hints{display:none}@media(min-width:48rem)and (min-height:44rem){.hints{flex:0 0 auto;display:flex;flex-wrap:wrap;justify-content:center;gap:.4rem 1.25rem;padding-bottom:1.25rem;font-size:.8125rem;color:var(--muted)}.hints span{display:inline-flex;align-items:center;gap:.35rem}}kbd{font-family:var(--font-mono);font-size:.75rem;padding:.1rem .35rem;border:1px solid var(--line);border-radius:.3rem;background:var(--surface-subtle);color:var(--muted)}.empty{flex:1 1 auto;display:grid;align-content:center;justify-items:start;gap:1rem;max-width:34rem;margin-inline:auto;padding-block:clamp(2rem,10vw,5rem)}.empty__title{font-size:clamp(1.75rem,6vw,2.5rem);font-weight:600;letter-spacing:-.02em;line-height:1.1}.empty__body{color:var(--muted);font-size:1.0625rem}.empty__reasons,.warning__list{display:grid;gap:.35rem;padding-left:1.25rem;list-style:disc}.empty__reasons{color:var(--muted)}.button{min-height:2.75rem;padding:.5rem 1rem;border:1px solid var(--control-line);border-radius:var(--radius-sm);background:var(--surface);font-size:.9375rem;cursor:pointer;touch-action:manipulation;transition:background-color .12s ease}.button:hover{background:var(--line)}.button--primary{border-color:var(--accent);background:var(--accent);color:var(--accent-text)}.button--primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}.reveal{min-height:2.75rem;padding:.5rem 1.25rem;border:1px solid var(--control-line);border-radius:999px;background:transparent;font-size:1rem;cursor:pointer;touch-action:manipulation;transition:background-color .12s ease}.reveal:hover{background:var(--surface-subtle)}.chip{min-height:2.75rem;min-width:2.75rem;padding:.5rem .9rem;border:1px solid var(--control-line);border-radius:999px;background:var(--surface);font-size:.9375rem;cursor:pointer;touch-action:manipulation;transition:background-color .12s ease,border-color .12s ease}.chip:hover{background:var(--surface-subtle)}.chip[aria-pressed=true]{border-color:var(--accent);background:var(--accent);color:var(--accent-text)}.chip[aria-pressed=true]:hover{background:var(--accent-strong);border-color:var(--accent-strong)}.linkButton{padding:.35rem 0;border:0;background:none;color:var(--accent);font-size:.9375rem;text-decoration:underline;text-underline-offset:.2em;cursor:pointer}.segmented{display:inline-flex;padding:.25rem;border:1px solid var(--control-line);border-radius:999px;background:var(--surface)}.segmented__option{display:block}.segmented__label{display:flex;align-items:center;justify-content:center;min-height:2.25rem;padding-inline:1.1rem;border-radius:999px;font-size:.9375rem;cursor:pointer;transition:background-color .12s ease}.segmented__option:hover .segmented__label{background:var(--surface-subtle)}.segmented input:checked+.segmented__label{background:var(--accent);color:var(--accent-text)}.segmented input:focus-visible+.segmented__label{outline:3px solid var(--accent);outline-offset:2px}.dialog{padding:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--text);width:min(100% - 1.5rem,46rem);max-height:calc(100dvh - 2rem);overflow:hidden}.dialog[open]{display:flex;flex-direction:column}.dialog::backdrop{background:#00000080}.dialog__frame{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;width:100%}.dialog__head{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem clamp(1rem,3vw,1.75rem);border-bottom:1px solid var(--line)}.dialog__title{font-size:1.25rem;font-weight:600;letter-spacing:-.01em}.dialog__body{display:grid;gap:1.75rem;align-content:start;flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:1.5rem clamp(1rem,3vw,1.75rem)}.group+.group{border-top:1px solid var(--line);padding-top:1.75rem}.group__legend{padding:0}.group__legendRow{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.25rem 1.25rem;width:100%;margin-bottom:.75rem}.group__title{font-size:1.0625rem;font-weight:600;letter-spacing:-.01em}.group__actions{display:flex;gap:1.25rem}.group__note{margin-bottom:.875rem;max-width:42rem;color:var(--muted);font-size:.875rem}.group__options{display:flex;flex-wrap:wrap;gap:.5rem}.dialog__foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem 1rem;padding:1rem clamp(1rem,3vw,1.75rem);padding-bottom:max(1rem,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--surface-subtle)}.dialog__count{color:var(--muted);font-size:.9375rem;font-variant-numeric:tabular-nums}.warning{display:grid;gap:.35rem;flex:1 1 18rem;padding:.75rem .875rem;border:1px solid var(--warn);border-radius:var(--radius-sm);background:var(--warn-surface);color:var(--warn);font-size:.9375rem}.warning__title{font-weight:600}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.next:active{transform:none}}