:root{--bg:#08090e;--bg-2:#0e1017;--panel:#14171f;--panel-2:#1b1f2a;--line:#242936;--text:#f2f4f8;--muted:#9198aa;--faint:#5b6274;--accent:#7d8bff;--accent-2:#b08cff;--right:#5ec8ff;--left:#ffb35e;--ok:#5df2a0;--warn:#ffe066;--bad:#ff5470;--radius:12px;--radius-sm:8px;--radius-lg:18px;--hairline:#ffffff12;--hairline-strong:#ffffff1f;--glass:#12141c9e;--accent-soft:#7d8bff24;--ring:0 0 0 3px #7d8bff73;--grad-accent:linear-gradient(135deg, #6f86ff, #a07bff);--shadow-1:0 1px 1px #00000040, 0 2px 6px #0000002e;--shadow-2:0 1px 2px #0000004d, 0 8px 24px #00000047;--shadow-3:0 2px 6px #0000004d, 0 24px 64px #00000080;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--ease-back:cubic-bezier(.34, 1.56, .64, 1);--ease-spring:linear(0, .06 3%, .22 7%, .45 12%, .68 18%, .85 25%, .95 32%, 1.01 40%, 1.03 48%, 1.025 58%, 1.01 70%, 1);--dur-instant:90ms;--dur-fast:.16s;--dur-base:.24s;--dur-slow:.42s;--dur-page:.3s;--font-text:-apple-system, "SF Pro Text", "Segoe UI Variable Text", "Segoe UI", system-ui, sans-serif;--font-display:-apple-system, "SF Pro Display", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;--font-mono:ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;--fs-xs:.75rem;--fs-sm:.86rem;--fs-md:1rem;--fs-lg:1.2rem;--fs-xl:1.6rem;--fs-2xl:2.1rem;font-family:var(--font-text);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font-feature-settings:"cv11", "ss01";--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-size:15px;line-height:1.5}*{box-sizing:border-box}body{background:radial-gradient(900px 600px at -10% -10%, #7d8bff29, transparent 60%), radial-gradient(700px 500px at 0% 110%, #5ec8ff1a, transparent 60%), var(--bg);margin:0;overflow:hidden}#root{height:100dvh}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.015em;margin:0;font-weight:650;line-height:1.2}h1{font-size:var(--fs-xl);letter-spacing:-.022em}h2{font-size:var(--fs-lg)}h3{font-size:var(--fs-md)}p{margin:0}a{color:var(--accent)}button,select,input{font:inherit;color:inherit}::selection{background:#7d8bff59}:focus-visible{outline-offset:2px;outline:2px solid #7d8bffd9}button:focus-visible,select:focus-visible,input:focus-visible{box-shadow:var(--ring);outline:none}*{scrollbar-width:thin;scrollbar-color:#ffffff24 transparent}.app{grid-template-columns:220px 1fr;height:100dvh;display:grid}.sidebar{background:var(--glass);-webkit-backdrop-filter:blur(24px)saturate(170%);border-right:1px solid var(--hairline);z-index:2;flex-direction:column;gap:2px;padding:18px 12px;display:flex}.brand{font-family:var(--font-display);letter-spacing:-.01em;align-items:center;gap:10px;padding:6px 10px 20px;font-size:1.12rem;font-weight:700;display:flex}.brand-mark{background:linear-gradient(135deg, var(--right), var(--accent-2) 60%, var(--left));border-radius:8px;flex:none;width:26px;height:26px;box-shadow:inset 0 0 0 1px #ffffff1f,0 4px 14px #7d8bff59}.brand-mark.lg{border-radius:10px;width:34px;height:34px}.nav-btn{border-radius:var(--radius-sm);color:var(--muted);cursor:pointer;text-align:left;transition:color var(--dur-fast) var(--ease-out), transform var(--dur-instant) var(--ease-out);background:0 0;border:0;align-items:center;gap:12px;padding:8px 12px;font-size:.93rem;font-weight:550;display:flex;position:relative}.nav-btn:before{content:"";border-radius:inherit;opacity:0;transition:opacity var(--dur-fast) var(--ease-out);background:#ffffff0d;position:absolute;inset:0}.nav-btn:hover:before{opacity:1}.nav-btn:hover{color:var(--text)}.nav-btn:active{transform:scale(.97)}.nav-btn.active{color:var(--text)}.nav-indicator{border-radius:inherit;z-index:-1;view-transition-name:nav-indicator;background:linear-gradient(#7d8bff42,#7d8bff29);position:absolute;inset:0;box-shadow:inset 0 0 0 1px #7d8bff47}.nav-btn>*{position:relative}.nav-btn .nav-indicator{position:absolute}.nav-btn{isolation:isolate}.nav-btn.active svg{color:var(--accent)}.nav-btn svg{width:18px;height:18px;transition:color var(--dur-fast);flex:none}.sidebar-foot{flex-direction:column;gap:8px;margin-top:auto;display:flex}.sound-pill .dot{animation:breathe 1.6s var(--ease-in-out) infinite}.main{view-transition-name:page;background:#08090e8c;position:relative;overflow:auto}.main.onboarding{background:0 0}.page{flex-direction:column;gap:24px;max-width:1180px;margin:0 auto;padding:32px 40px 56px;display:flex}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;display:flex}.page-head h1{font-size:var(--fs-2xl)}.sub{color:var(--muted)}.card{background:linear-gradient(180deg, #ffffff06, transparent 40%), var(--panel);border:1px solid var(--hairline);border-radius:var(--radius);box-shadow:var(--shadow-1), 0 1px 0 #ffffff0a inset;padding:18px}.grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;display:grid}.row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.col{flex-direction:column;gap:10px;display:flex}.spacer{flex:1}.btn{border:1px solid var(--hairline-strong);background:var(--panel-2);color:var(--text);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;transition:transform var(--dur-instant) var(--ease-out), background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), opacity var(--dur-fast);align-items:center;gap:8px;padding:7px 14px;font-size:.93rem;font-weight:560;display:inline-flex;box-shadow:inset 0 1px #ffffff0d,0 1px 2px #0000004d}.btn:hover:not(:disabled){background:#232837;border-color:#ffffff29}.btn:active:not(:disabled){transition-duration:50ms;transform:scale(.965)}.btn:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--grad-accent);color:#fff;border-color:#0000;position:relative;box-shadow:inset 0 1px #ffffff40,0 4px 14px #6f86ff59}.btn.primary:after{content:"";border-radius:inherit;opacity:0;transition:opacity var(--dur-fast);pointer-events:none;background:#ffffff1f;position:absolute;inset:0}.btn.primary:hover:not(:disabled):after{opacity:1}.btn.primary:hover:not(:disabled){background:var(--grad-accent);border-color:#0000}.btn.ghost{box-shadow:none;background:0 0;border-color:#0000}.btn.ghost:hover:not(:disabled){background:#ffffff0f;border-color:#0000}.btn.small{font-size:var(--fs-sm);padding:5px 10px}.btn.danger{color:var(--bad)}.btn.on{color:#fff;background:#7d8bff33;border-color:#7d8bff99}.seg{border:1px solid var(--hairline);background:#00000059;border-radius:9px;gap:2px;padding:2px;display:inline-flex;box-shadow:inset 0 1px 2px #00000059}.seg button{color:var(--muted);cursor:pointer;font-weight:560;font-size:var(--fs-sm);transition:color var(--dur-fast) var(--ease-out), transform var(--dur-instant) var(--ease-out);background:0 0;border:0;border-radius:7px;padding:4px 12px;position:relative}.seg button:hover:not(.active){color:var(--text)}.seg button:active{transform:scale(.95)}.seg button.active{color:var(--text);animation:seg-in var(--dur-base) var(--ease-spring);background:#2a3040;box-shadow:inset 0 1px #ffffff14,0 1px 3px #0006}select,input[type=number],input[type=text]{border:1px solid var(--hairline-strong);border-radius:var(--radius-sm);transition:border-color var(--dur-fast), box-shadow var(--dur-fast);background:#0000004d;padding:6px 10px;box-shadow:inset 0 1px 2px #00000040}select:hover,input[type=number]:hover,input[type=text]:hover{border-color:#fff3}input[type=number]:focus,input[type=text]:focus{box-shadow:var(--ring);border-color:#7d8bffb3;outline:none}select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='14' viewBox='0 0 10 14' fill='none' stroke='%239198aa' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 5l3-3 3 3M2 9l3 3 3-3'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:30px}select option{background:var(--panel-2)}input[type=range]{appearance:none;cursor:pointer;height:22px;accent-color:var(--accent);background:0 0}input[type=range]::-webkit-slider-runnable-track{background:linear-gradient(90deg,#7d8bff8c,#ffffff24);border-radius:99px;height:4px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;transition:transform var(--dur-fast) var(--ease-back);background:#f4f5f8;border-radius:50%;margin-top:-6px;box-shadow:0 0 0 .5px #0000004d,0 2px 6px #00000073}input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.12)}input[type=range]:active::-webkit-slider-thumb{transform:scale(.92)}input[type=range]:focus-visible{box-shadow:none}input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:var(--ring), 0 2px 6px #00000073}input[type=range]::-moz-range-track{background:#ffffff24;border-radius:99px;height:4px}input[type=range]::-moz-range-thumb{background:#f4f5f8;border:0;border-radius:50%;width:16px;height:16px}input[type=checkbox]{appearance:none;cursor:pointer;width:16px;height:16px;transition:background-color var(--dur-fast), border-color var(--dur-fast);background:#0000004d;border:1px solid #ffffff38;border-radius:5px;flex:none;place-items:center;margin:0;display:inline-grid}input[type=checkbox]:after{content:"";width:9px;height:5px;transition:transform var(--dur-base) var(--ease-back);border:0 solid #fff;border-width:0 0 2px 2px;transform:translateY(-1px)rotate(-45deg)scale(0)}input[type=checkbox]:checked{background:var(--accent);border-color:var(--accent)}input[type=checkbox]:checked:after{transform:translateY(-1px)rotate(-45deg)scale(1)}input[type=checkbox]:active{transform:scale(.9)}label.field{font-size:var(--fs-sm);color:var(--muted);flex-direction:column;gap:5px;display:flex}details summary{transition:color var(--dur-fast)}details summary:hover{color:var(--text)}.pill{color:var(--muted);border:1px solid var(--hairline);background:#ffffff0f;border-radius:99px;align-items:center;gap:6px;padding:3px 10px;font-size:.8rem;font-weight:600;display:inline-flex}.dot{background:var(--faint);border-radius:50%;flex:none;width:8px;height:8px}.dot.ok{background:var(--ok);box-shadow:0 0 8px var(--ok)}.dot.warn{background:var(--warn)}.dot.bad{background:var(--bad)}.stars{color:var(--warn);letter-spacing:1px;text-shadow:0 0 10px #ffe06659}.stars .off{color:#343a4d;text-shadow:none}.kbd{font-family:var(--font-mono);border:1px solid var(--hairline-strong);background:#ffffff0f;border-bottom-width:2px;border-radius:5px;padding:0 6px;font-size:.8rem}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.85rem}.note-chip{background:var(--panel-2);border:1px solid var(--hairline);min-width:54px;animation:pop-in var(--dur-base) var(--ease-spring) both;border-radius:10px;flex-direction:column;align-items:center;padding:6px 10px;display:inline-flex}.note-chip b{font-size:1.15rem;font-family:var(--font-display)}.note-chip span{color:var(--muted);font-size:.72rem}.callout{background:#7d8bff14;border:1px solid #7d8bff38;border-radius:10px;padding:11px 14px}.callout.warn{background:#ffe06612;border-color:#ffe06640}.callout.bad{background:#ff547014;border-color:#ff54704d}.empty{text-align:center;flex-direction:column;align-items:center;gap:8px;padding:22px 0 10px;display:flex}.empty>span{width:44px;height:44px;color:var(--accent);background:var(--accent-soft);animation:breathe 2.4s var(--ease-in-out) infinite;border-radius:50%;place-items:center;font-size:1.3rem;display:grid}.practice{grid-template-rows:auto 1fr;height:100dvh;display:grid}.practice-bar{border-bottom:1px solid var(--hairline);z-index:1;background:#0e1017d9;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:9px 16px;display:flex;position:relative;box-shadow:0 1px #0006}.practice-bar b{font-family:var(--font-display);letter-spacing:-.01em}.practice-body{grid-template-columns:1fr 300px;min-height:0;display:grid}.practice-body.no-side{grid-template-columns:1fr}.canvas-wrap{background:#08090e;min-height:0;position:relative;overflow:hidden}.canvas-wrap canvas{width:100%;height:100%;display:block}.side{border-left:1px solid var(--hairline);background:var(--bg-2);flex-direction:column;gap:16px;padding:18px;display:flex;overflow:auto}.overlay{z-index:5;animation:fade-in var(--dur-base) var(--ease-out) both;background:radial-gradient(circle at 50% 40%,#0a0c13bd,#05060aeb);place-items:center;padding:24px;display:grid;position:absolute;inset:0}.overlay .card{border-radius:var(--radius-lg);width:100%;max-width:640px;max-height:100%;box-shadow:var(--shadow-3), 0 1px 0 #ffffff0f inset;animation:pop-in var(--dur-slow) var(--ease-spring) both;background:linear-gradient(#ffffff0a,#0000 30%),#161922eb;padding:26px;overflow:auto}.hud{z-index:3;pointer-events:none;gap:8px;display:flex;position:absolute;top:14px;left:50%;transform:translate(-50%)}.hud .pill{color:var(--text);border-color:var(--hairline-strong);box-shadow:var(--shadow-2);animation:drop-in var(--dur-base) var(--ease-spring);background:#12141ce0;padding:6px 14px;font-size:.9rem}.toast{z-index:4;position:absolute;top:58px;left:50%;transform:translate(-50%)}.toast .callout{box-shadow:var(--shadow-2);animation:drop-in var(--dur-base) var(--ease-spring);background:#262314f0}.hud-stats{pointer-events:none;z-index:2;font-family:var(--font-display);font-variant-numeric:tabular-nums;position:absolute;inset:0}.hud-combo{letter-spacing:-.03em;color:#ffffffe0;text-shadow:0 2px 12px #0009;font-size:2.1rem;font-weight:800;line-height:1;position:absolute;top:12px;left:16px}.hud-combo span{transform-origin:0 70%;will-change:transform;display:inline-block}.hud-combo .ghost{color:var(--bad);opacity:0;position:absolute;top:0;left:0}.hud-score{text-shadow:0 2px 12px #0009;flex-direction:column;align-items:flex-end;line-height:1.1;display:flex;position:absolute;top:12px;right:16px}.hud-score b{letter-spacing:-.02em;color:#ffffffe6;font-size:1.5rem;font-weight:750}.hud-score span{color:#fff9;font-size:.95rem;font-weight:650}.overlay .card.results{gap:18px;max-width:760px}.ranking{border-bottom:1px solid var(--hairline);grid-template-columns:auto 1fr;align-items:center;gap:28px;padding:6px 4px 18px;display:grid}.ranking-grade{flex-direction:column;align-items:center;gap:4px;min-width:150px;display:flex}.stars-lg{animation:fade-up var(--dur-slow) var(--ease-out) .55s both;font-size:1.6rem}.ranking-stats{font-variant-numeric:tabular-nums;flex-direction:column;gap:14px;display:flex}.ranking-score b{font-family:var(--font-display);letter-spacing:-.03em;font-size:2.5rem;font-weight:750;line-height:1.05;display:block}.ranking-row{flex-wrap:wrap;gap:28px;display:flex}.ranking-row>div,.ranking-score{flex-direction:column;display:flex}.ranking-row b{font-family:var(--font-display);font-size:1.35rem;font-weight:700}.ranking .sub{font-size:var(--fs-xs);text-transform:uppercase;letter-spacing:.08em;font-weight:600}.judgments{flex-wrap:wrap;gap:8px;display:flex}.judgments>div{border:1px solid var(--hairline);border-top:2px solid var(--c);min-width:74px;animation:fade-up var(--dur-slow) var(--ease-out) both;background:#ffffff0a;border-radius:10px;flex-direction:column;align-items:center;padding:7px 10px;display:flex}.judgments b{font-family:var(--font-display);color:var(--c);font-size:1.2rem}.judgments>div>span{font-size:var(--fs-xs);color:var(--muted);font-weight:600}.feedback{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;display:grid}.feedback h3{font-size:1.05rem}.rank{font-family:var(--font-display);letter-spacing:-.04em;padding-right:.06em;font-style:italic;font-weight:850;line-height:1;display:inline-block}.rank-sm{border:1px solid var(--hairline);background:#ffffff0f;border-radius:6px;padding:1px 7px;font-size:.95rem}.rank-xl{animation:rank-in .7s var(--ease-spring) .12s both;filter:drop-shadow(0 6px 30px var(--glow,#7d8bff80));font-size:7.5rem}.rank-SS{color:#f6f2d8;-webkit-text-fill-color:transparent;--glow:#ffdc8c8c;background-image:linear-gradient(#fff,#ffe9a8 55%,#d9b45a);-webkit-background-clip:text;background-clip:text}.rank-S{color:#ffd65e;--glow:#ffd65e80}.rank-A{color:#5df2a0;--glow:#5df2a073}.rank-B{color:#5ec8ff;--glow:#5ec8ff73}.rank-C{color:#c48cff;--glow:#c48cff73}.rank-D{color:#ff5470;--glow:#ff547073}.rank-sm.rank-SS{-webkit-text-fill-color:#ffe9a8;color:#ffe9a8;background-image:none}.stage{padding-top:6px}.stage-head{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.stage-badge{width:44px;height:44px;font-family:var(--font-display);color:#fff;background:var(--grad-accent);border-radius:13px;flex:none;place-items:center;font-size:1.3rem;font-weight:800;display:grid;box-shadow:0 6px 20px #7d8bff4d,inset 0 1px #ffffff4d}.stage-num{color:var(--accent-2);font-weight:700;font-size:var(--fs-xs);letter-spacing:.1em;text-transform:uppercase}.stage-meter{min-width:200px;font-size:var(--fs-sm);flex-direction:column;align-items:flex-end;gap:6px;margin-left:auto;display:flex}.stage-meter .bar{width:200px}.stage-blurb{margin-top:-4px}.bar{background:#ffffff12;border-radius:99px;height:6px;overflow:hidden}.bar>div{background:linear-gradient(90deg, var(--right), var(--accent-2));border-radius:inherit;transform-origin:0;height:100%;transition:transform var(--dur-slow) var(--ease-out)}.star-total{color:var(--warn)}.lesson-card{--rx:0deg;--ry:0deg;--lift:0px;--kind:var(--right);cursor:pointer;text-align:left;color:inherit;font:inherit;transform:perspective(900px) translateY(var(--lift)) rotateX(var(--rx)) rotateY(var(--ry));transition:transform var(--dur-base) var(--ease-out), border-color var(--dur-fast), opacity var(--dur-fast);flex-direction:column;gap:8px;padding:16px 16px 16px 20px;display:flex;position:relative;overflow:hidden}.lesson-card.kind-improvise{--kind:var(--accent-2)}.lesson-card.kind-echo{--kind:var(--left)}.lesson-card:before{content:"";background:var(--kind);opacity:.85;width:4px;position:absolute;top:0;bottom:0;left:0}.lesson-card:after{content:"";pointer-events:none;opacity:0;transition:opacity var(--dur-base) var(--ease-out);background:radial-gradient(360px circle at var(--mx,50%) var(--my,0%), #ffffff14, transparent 45%);position:absolute;inset:0}.lesson-card .kind{color:var(--kind)}.lesson-card:hover:not(.locked){--lift:-4px;border-color:color-mix(in srgb, var(--kind) 45%, transparent)}.lesson-card:hover:not(.locked):after{opacity:1}.lesson-card:active:not(.locked){--lift:-1px;transition-duration:var(--dur-instant)}.lesson-card.next{box-shadow:var(--shadow-2), 0 0 0 1px #7d8bff40, 0 8px 30px #7d8bff2e;border-color:#7d8bff8c}.lesson-card.next:before{background:var(--grad-accent);width:5px}.lesson-card.locked{opacity:.42;cursor:default;filter:saturate(.4)}.lesson-card h3{font-size:1.02rem}.log{border:1px solid var(--hairline);background:#050609;border-radius:10px;height:280px;padding:8px 10px;overflow:auto;box-shadow:inset 0 1px 3px #0006}.log div{white-space:nowrap}.log div:last-child{animation:fade-in var(--dur-fast) var(--ease-out)}.roll{border:1px solid var(--hairline);border-radius:var(--radius);-webkit-user-select:none;user-select:none;background:#07080c;height:420px;position:relative;overflow:auto;box-shadow:inset 0 1px 4px #00000073}.roll-note{cursor:grab;border-radius:4px;position:absolute;box-shadow:inset 0 0 0 1px #0006,inset 0 1px #ffffff40}.roll-note:active{cursor:grabbing}.roll-note.sel{outline-offset:0;outline:2px solid #fff}.roll-note 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