:root{--bg:#f6f1e7;--surface:#fffdf8;--surface-2:#efe8da;--paper:#fffdf7;--ink:#1d1b16;--ink-2:#4a463d;--muted:#6e675b;--line:#ddd4c3;--accent:#1f3b5c;--accent-ink:#f6f1e7;--accent-soft:#dfe7f1;--highlight:#f2b84b;--focus-ring:#1f3b5c;--good:#1f6f5c;--good-soft:#e3f0ea;--answer:#2453a6;--warning:#8a5a00;--warning-soft:#f7ebcc;--critical:#a64a24;--critical-soft:#fbeee6;--unseen:#e7e1d5;--timer-track:#ebe4d6;--timer-fill:#3c6e9e;--timer-goal:#1d1b16;--key-correct:#d6ebe2;--key-correct-black:#1f6f5c;--key-miss:#f6d9cb;--key-miss-black:#a64a24;--key-target:#d3def3;--key-target-black:#2453a6;--radius:14px;--radius-small:9px;--shadow:0 1px 2px #281e0a0f, 0 6px 20px #281e0a0f;--font-ui:system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-display:"Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#16140f;--surface:#211e18;--surface-2:#2b2720;--paper:#ece5d6;--ink:#f1ece2;--ink-2:#cfc7b8;--muted:#a59c8c;--line:#3a352c;--accent:#9cc0e8;--accent-ink:#12161c;--accent-soft:#24303d;--focus-ring:#f2b84b;--answer:#8fb4f0;--good:#5fc3a3;--good-soft:#1b3029;--warning:#e2b34d;--warning-soft:#3a3020;--critical:#f0956a;--critical-soft:#3a261d;--unseen:#2e2a23;--shadow:0 1px 2px #0000004d, 0 6px 20px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#16140f;--surface:#211e18;--surface-2:#2b2720;--paper:#ece5d6;--ink:#f1ece2;--ink-2:#cfc7b8;--muted:#a59c8c;--line:#3a352c;--accent:#9cc0e8;--accent-ink:#12161c;--accent-soft:#24303d;--focus-ring:#f2b84b;--answer:#8fb4f0;--good:#5fc3a3;--good-soft:#1b3029;--warning:#e2b34d;--warning-soft:#3a3020;--critical:#f0956a;--critical-soft:#3a261d;--unseen:#2e2a23;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*,:before,:after{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);font-family:var(--font-ui);-webkit-tap-highlight-color:transparent;margin:0;font-size:16px;line-height:1.5}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.01em;text-wrap:balance;margin:0 0 .5em;font-weight:600;line-height:1.2}h1{font-size:clamp(1.6rem,4vw,2.2rem)}h2{font-size:1.3rem}p{margin:0 0 .8em}button{font:inherit;color:inherit}:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.muted{color:var(--muted)}.app-header{z-index:10;padding:max(10px, env(safe-area-inset-top)) 16px 10px;background:color-mix(in srgb, var(--bg) 88%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;display:flex;position:sticky;top:0}.brand{font-family:var(--font-display);color:var(--ink);white-space:nowrap;align-items:center;gap:10px;font-size:1.15rem;font-weight:600;text-decoration:none;display:flex}.brand img{border-radius:7px}.nav{scrollbar-width:none;gap:4px;display:flex;overflow-x:auto}.nav-link{color:var(--ink-2);white-space:nowrap;border-radius:999px;padding:6px 12px;font-size:.95rem;text-decoration:none}.nav-link:hover{background:var(--surface-2)}.nav-link[aria-current=page]{background:var(--accent);color:var(--accent-ink)}.app-main{max-width:1040px;padding:24px 16px calc(48px + env(safe-area-inset-bottom));margin:0 auto}@media (width<=640px){.app-header{flex-direction:column;align-items:stretch;gap:8px}.nav{justify-content:space-between}.nav-link{padding:6px 10px;font-size:.9rem}}body.is-practicing .app-header{display:none}body.is-practicing .app-main{padding-top:max(12px, env(safe-area-inset-top))}.button{border:1px solid var(--line);background:var(--surface);min-height:44px;color:var(--ink);cursor:pointer;border-radius:999px;justify-content:center;align-items:center;padding:10px 18px;font-weight:600;transition:transform 80ms,background .15s;display:inline-flex}.button:hover{background:var(--surface-2)}.button:active{transform:scale(.98)}.button-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.button-primary:hover{background:color-mix(in srgb, var(--accent) 88%, var(--ink))}.button-danger{color:var(--critical)}.button-quiet{min-height:36px;color:var(--muted);background:0 0;border-color:#0000;padding:6px 14px;font-weight:500}.button:disabled{opacity:.5;cursor:default;transform:none}.icon-button{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:50%;flex:none;width:44px;height:44px;font-size:1.1rem}.hero{grid-template-columns:1.4fr 1fr;gap:16px;margin-bottom:20px;display:grid}@media (width<=760px){.hero{grid-template-columns:1fr}}.hero-card{border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);padding:22px}.hero-review{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .hero-review{background:var(--accent-soft);border-color:var(--line);color:var(--ink)}}:root[data-theme=dark] .hero-review{background:var(--accent-soft);border-color:var(--line);color:var(--ink)}.hero-review .eyebrow{color:var(--highlight)}.hero-review .button-primary{background:var(--highlight);border-color:var(--highlight);color:#1d1b16}.hero-review p{opacity:.85;max-width:52ch}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;font-size:.78rem;font-weight:700;display:block}.session-options{border-radius:var(--radius);background:var(--surface-2);flex-wrap:wrap;gap:14px 28px;margin-bottom:28px;padding:16px 18px;display:flex}.chip-group{flex-direction:column;gap:6px;min-width:0;display:flex}.chip-group-label{color:var(--muted);font-size:.8rem;font-weight:600}.chips{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.chip{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:999px;min-height:36px;padding:6px 12px;font-size:.9rem}.chip.is-selected{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.midi-status{color:var(--muted);font-size:.85rem}.category{margin-bottom:28px}.category-title{margin-bottom:12px}.deck-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;display:grid}.deck{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);text-align:left;cursor:pointer;flex-direction:column;gap:6px;padding:16px;transition:border-color .15s,transform .1s;display:flex}.deck:hover{border-color:var(--accent)}.deck:disabled{cursor:default;opacity:.6}.deck:disabled:hover{border-color:var(--line)}.mode-hint{max-width:44ch;color:var(--ink-2);align-self:flex-end;margin:0;font-size:.85rem}.deck:active{transform:scale(.99)}.deck-title{font-size:1.02rem;font-weight:700}.deck-subtitle{color:var(--ink-2);flex:1;font-size:.9rem}.deck-progress,.mini-progress{background:var(--unseen);border-radius:999px;height:6px;display:block;overflow:hidden}.deck-progress span,.mini-progress span{background:var(--good);border-radius:999px;height:100%;display:block}.deck-progress{position:relative}.deck-progress span{position:absolute;inset:0 auto 0 0}.deck-progress .deck-progress-known{background:color-mix(in srgb, var(--good) 35%, var(--unseen))}.deck-status{color:var(--muted);font-size:.8rem}.practice{flex-direction:column;gap:14px;max-width:720px;margin:0 auto;display:flex}@media (width<=640px){.practice{min-height:calc(100dvh - 60px)}}.practice-header{align-items:center;gap:12px;display:flex}.practice-title{flex-direction:column;min-width:0;display:flex}.practice-title strong{font-family:var(--font-display);font-size:1.15rem}.practice-meta{color:var(--muted);font-variant-numeric:tabular-nums;gap:12px;font-size:.85rem;display:flex}.session-clock{color:var(--ink-2);font-weight:700}.paper{border-radius:var(--radius);background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);padding:10px 10px 0;position:relative;overflow:hidden}.staff{justify-content:center;display:flex}.staff svg{width:100%;max-width:560px;height:auto;max-height:42vh;display:block}@media (width>=768px){.staff svg{max-width:720px;max-height:50vh}}.card-badge{background:var(--highlight);color:#1d1b16;border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:700;position:absolute;top:10px;right:10px}.card-timer{background:var(--timer-track);height:5px;margin:6px -10px 0}.card-timer-fill{background:var(--timer-fill);width:0;height:100%}.feedback{text-align:center;min-height:132px;padding:0 4px}.feedback p{margin:0 0 6px}.feedback-answer{font-family:var(--font-display);font-size:1.35rem;font-weight:600}.feedback-time{color:var(--muted);font-variant-numeric:tabular-nums}.feedback-explanation{max-width:60ch;color:var(--ink-2);margin-inline:auto!important}.feedback .button{min-width:160px;margin-top:6px}.feedback.is-correct .feedback-answer{color:var(--good)}.feedback.is-mistake .feedback-answer strong{color:var(--answer)}.feedback-given{color:var(--muted);font-size:.9rem}.feedback-prompt{color:var(--ink-2);font-weight:600}.feedback.is-corrected .feedback-prompt{color:var(--good)}.feedback-notice{color:var(--muted);padding-top:8px;font-size:.9rem}.burst-line{background:var(--line);border-radius:999px;height:3px;margin-bottom:10px;overflow:hidden}.burst-line-fill{background:var(--ink-2);width:0;height:100%}.summary-highlights{color:var(--good);font-weight:600}.summary-invite{border-radius:var(--radius);background:var(--accent-soft);margin:18px 0;padding:16px 20px}.summary-invite p{margin-bottom:10px}.feedback.is-intro .feedback-answer,.feedback.is-mistake .feedback-answer{font-size:1.6rem}.sequence-name{color:var(--good);margin:0 4px;font-weight:600;display:inline-block}.sequence-name.is-miss{color:var(--critical);text-decoration:underline}.pad-slot{padding-top:8px;padding-bottom:env(safe-area-inset-bottom);margin-top:auto}.pad{flex-direction:column;gap:8px;display:flex}.pad-hint{text-align:center;color:var(--muted);margin:0;font-size:.85rem}.pad-row{gap:6px;display:grid}.pad-row-letters{grid-template-columns:repeat(7,1fr)}.pad-row-modifiers{grid-template-columns:repeat(3,minmax(0,72px));justify-content:center}.pad-row-qualities{grid-template-columns:repeat(auto-fit,minmax(90px,1fr))}.pad-row-intervals{grid-template-columns:repeat(7,1fr)}.pad-row-keys{grid-template-columns:24px repeat(7,1fr);align-items:center}.pad-row-keys:first-child{grid-template-columns:24px minmax(0,1fr)}.pad-row-label{text-align:center;color:var(--muted);font-size:1.1rem}.pad-button{border:1px solid var(--line);border-radius:var(--radius-small);background:var(--surface);cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none;flex-direction:column;justify-content:center;align-items:center;min-height:56px;padding:6px 2px;font-size:1.05rem;font-weight:600;transition:background .1s,transform 60ms;display:flex}.pad-button:hover{background:var(--surface-2)}.pad-button:active{transform:scale(.96)}.pad-button.is-selected{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.pad-button small{color:var(--muted);font-size:.68rem;font-weight:500}.pad-button.is-selected small{color:inherit}.pad-modifier{min-height:44px;font-size:1.3rem}.pad-key{min-height:46px;font-size:.95rem}@media (width<=420px){.pad-button{min-height:52px;font-size:.95rem}.pad-interval small{display:none}.pad-key{font-size:.8rem}}.keyboard-scroll{padding-bottom:4px;overflow-x:auto}.keyboard{-webkit-user-select:none;user-select:none;touch-action:manipulation;width:100%;height:170px;display:flex;position:relative}.key{cursor:pointer;border:1px solid #b9b0a0;padding:0}.key-white{color:#6a6458;background:#fffdf8;border-radius:0 0 8px 8px;flex:1 1 0;justify-content:center;align-items:flex-end;margin-right:-1px;padding-bottom:8px;display:flex}.key-black{z-index:1;background:#1f1d19;border-color:#1f1d19;border-radius:0 0 6px 6px;height:60%;position:absolute;top:0}.key-label{pointer-events:none;font-size:.75rem;font-weight:600}.key-white.is-correct{background:var(--key-correct)}.key-black.is-correct{background:var(--key-correct-black)}.key-white.is-miss{background:var(--key-miss)}.key-black.is-miss{background:var(--key-miss-black)}.key-white.is-target{background:var(--key-target)}.key-black.is-target{background:var(--key-target-black)}.summary{text-align:center;max-width:640px;margin:0 auto}.summary-record{color:var(--warning);font-weight:700}.tiles{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0;display:grid}.tile{border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-align:left;flex-direction:column;gap:2px;padding:16px;display:flex}.tile-value{font-family:var(--font-display);font-variant-numeric:tabular-nums;font-size:1.8rem;font-weight:600}.tile-label{color:var(--ink-2);font-size:.85rem}.tile-detail{color:var(--muted);font-size:.8rem}@media (width<=640px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}.summary-mistakes{text-align:left;border-radius:var(--radius);background:var(--surface-2);padding:16px 20px}.summary-mistakes ul{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.summary-mistakes li{background:var(--surface);border-radius:999px;padding:4px 12px;font-weight:600}.summary-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:24px;display:flex}.stats h2{margin-top:28px}.chart-wrap{border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);padding:12px;position:relative}.chart{width:100%;height:auto;display:block}.chart-grid{stroke:var(--line);stroke-width:1px;stroke-dasharray:2 4}.chart-baseline{stroke:var(--muted);stroke-width:1px}.chart-axis{fill:var(--muted);font-size:11px;font-family:var(--font-ui)}.chart-bar{fill:var(--accent)}.chart-hit{fill:#0000;cursor:crosshair}.chart-hit:hover{fill:color-mix(in srgb, var(--ink) 5%, transparent)}.chart-tooltip{border-radius:var(--radius-small);background:var(--ink);color:var(--bg);white-space:nowrap;pointer-events:none;flex-direction:column;padding:8px 10px;font-size:.8rem;display:flex;position:absolute;top:8px;transform:translate(-50%)}.note-legend{color:var(--ink-2);flex-wrap:wrap;gap:14px;margin:8px 0 12px;font-size:.85rem;display:flex}.legend-item{align-items:center;gap:6px;display:inline-flex}.legend-swatch{border:2px solid var(--state-line);background:var(--state-bg);border-radius:3px;width:12px;height:12px}.is-good{--state-bg:var(--good-soft);--state-line:var(--good)}.is-known{--state-bg:var(--good-soft);--state-line:color-mix(in srgb, var(--good) 45%, var(--line))}.is-warning{--state-bg:var(--warning-soft);--state-line:var(--warning)}.is-critical{--state-bg:var(--critical-soft);--state-line:var(--critical)}.is-unseen{--state-bg:var(--unseen);--state-line:var(--line)}.note-maps{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;display:grid}.note-map h3{font-size:1rem}.note-chips{grid-template-columns:repeat(auto-fill,minmax(64px,1fr));gap:6px;display:grid}.note-chip{border-radius:var(--radius-small);border-left:4px solid var(--state-line);background:var(--state-bg);flex-direction:column;padding:6px 8px;display:flex}.note-chip-name{font-size:.9rem;font-weight:700}.note-chip-time{color:var(--ink-2);font-variant-numeric:tabular-nums;font-size:.75rem}.deck-table{border-collapse:collapse;width:100%;font-size:.92rem}.deck-table th,.deck-table td{border-bottom:1px solid var(--line);text-align:left;padding:10px 8px}.deck-table th{color:var(--muted);font-size:.8rem;font-weight:600}.deck-table td:last-child{font-variant-numeric:tabular-nums;align-items:center;gap:10px;display:flex}.deck-table .mini-progress{flex:none;width:80px}.guide{max-width:68ch}.lead{color:var(--ink-2);font-size:1.1rem}.guide-section{margin-top:28px}.guide-list dt{margin-top:14px;font-weight:700}.guide-list dd{color:var(--ink-2);margin:4px 0 0}.settings{max-width:680px}.settings-group{border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);margin-bottom:20px;padding:4px 18px}.settings-group>.muted{margin:14px 0 10px}.setting{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:14px 0;display:flex}.setting:last-child{border-bottom:none}.setting label{flex-direction:column;display:flex}.setting small{color:var(--muted)}.setting select{border:1px solid var(--line);border-radius:var(--radius-small);background:var(--bg);min-height:40px;color:var(--ink);font:inherit;padding:6px 10px}.setting input[type=checkbox]{width:22px;height:22px;accent-color:var(--accent);flex:none}.settings-actions{flex-wrap:wrap;gap:10px;padding-bottom:16px;display:flex}.setting-message{color:var(--ink-2)}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important}}