:root{--bg: #0f172a;--panel: #1e293b;--panel-border: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #f59e0b;--accent-text: #1a1206;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{max-width:1100px;margin:0 auto;padding:20px 16px 48px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}.app-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.lang-picker{display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;margin-top:4px;color:var(--muted)}.lang-picker select{min-height:36px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.app-header h1{margin:0;font-size:1.7rem;letter-spacing:-.01em}.app-header p{margin:2px 0 14px;color:var(--muted)}.tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.tab-btn{display:inline-flex;align-items:center;white-space:nowrap;text-decoration:none;background:transparent;color:var(--muted);border:1px solid var(--panel-border);border-radius:999px;padding:6px 14px;cursor:pointer;font:inherit}.tab-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:600}.tab{display:flex;flex-direction:column;gap:14px}.panel{background:var(--panel);border:1px solid var(--panel-border);border-radius:12px;padding:14px 16px}.panel h2{margin:0 0 8px;font-size:1.05rem}.row{display:flex;flex-wrap:wrap;gap:14px}.row>.grow{flex:1 1 380px}.row>.note-info{flex:0 1 300px;min-width:240px}.controls{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 18px}.field{display:flex;flex-direction:column;gap:4px;font-size:.8rem;color:var(--muted)}select{background:#0f172a;color:var(--text);border:1px solid var(--panel-border);border-radius:8px;padding:7px 10px;font:inherit;font-size:.95rem;min-width:130px}.check{display:flex;align-items:center;gap:8px;padding-bottom:8px;cursor:pointer}.actions{margin-left:auto}.btn{background:#334155;color:var(--text);border:0;border-radius:8px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer}.btn.primary{background:var(--accent);color:var(--accent-text)}@media(hover:hover){.btn:hover{filter:brightness(1.1)}}.fb-scroll{overflow-x:auto}.fb{display:block;width:100%;min-width:720px;height:auto;-webkit-user-select:none;user-select:none}.fb-string-label{fill:var(--muted);font-size:15px;font-weight:600}.fb-dot-label{fill:#0b1220;font-size:11.5px;font-weight:700;pointer-events:none}.fb-fret-number{fill:#64748b;font-size:12px}.fb-fret-number.strong{fill:var(--muted);font-weight:700}.fb-hit{fill:transparent;cursor:pointer}@media(hover:hover){.fb-hit:hover{fill:#ffffff17}}.fb-active{animation:pulse 1.1s ease-out infinite;transform-box:fill-box;transform-origin:center}@keyframes pulse{0%{opacity:1;transform:scale(.9)}to{opacity:.25;transform:scale(1.25)}}.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:8px;font-size:.85rem;color:var(--muted)}.legend-item{display:inline-flex;align-items:center;gap:6px}.legend-item i{display:inline-block;width:12px;height:12px;border-radius:50%}.hint{color:var(--muted);font-size:.85rem}.legend .hint{margin-left:auto}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-flex;flex-direction:column;align-items:center;min-width:46px;padding:4px 8px;border:2px solid var(--panel-border);border-radius:10px;background:#0f172a;line-height:1.2}.chip b{font-size:1.05rem}.chip small{color:var(--muted);font-size:.72rem}.formula{margin:12px 0 0}.big-note{font-size:2.6rem;font-weight:700;line-height:1.1}.big-note small{font-size:1.1rem;color:var(--muted);margin-left:2px}dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;margin:10px 0 0}dt{color:var(--muted)}dd{margin:0}.fb-badge{fill:#fbbf24;stroke:#0b1220;stroke-width:3px;paint-order:stroke;font-size:11px;font-weight:800}.fb-muted{fill:#94a3b8;font-size:22px;font-weight:700}.fb-jog-label{fill:#fbbf24;font-size:12px;font-weight:700}.fb-jog-label.sub{font-weight:400;font-size:11px;fill:#d6a93a}.fb-arrow-label{fill:#f8fafc;stroke:#0b1220;stroke-width:3px;paint-order:stroke;font-size:11px;font-weight:700}.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--panel-border);border-radius:8px;overflow:hidden}.seg-btn{background:#0f172a;color:var(--muted);border:0;border-right:1px solid var(--panel-border);padding:7px 12px;font:inherit;font-size:.9rem;cursor:pointer}.seg-btn:last-child{border-right:0}.seg-btn.active{background:#334155;color:#fff;font-weight:600}@media(hover:hover){.seg-btn:hover{color:#fff}}.explain p{margin:0 0 6px}.explain p:last-child{margin-bottom:0}.explain{border-left:4px solid var(--accent)}.kbd,code{background:#0f172a;border:1px solid var(--panel-border);border-radius:5px;padding:0 5px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em}.table-wrap{overflow-x:auto}table.data{border-collapse:collapse;width:100%;font-size:.9rem}table.data th,table.data td{border-bottom:1px solid var(--panel-border);padding:5px 10px;text-align:left;white-space:nowrap}table.data th{color:var(--muted);font-weight:600}table.data td.num,table.data th.num{text-align:center}table.data tr.hl td{background:#f59e0b1f}.btn.small{padding:5px 10px;font-size:.85rem}.btn-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.good{color:#34d399}.warn{color:#fbbf24}.bad{color:#f87171}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}ul.tight{margin:4px 0;padding-left:20px}ul.tight li{margin:2px 0}.chip-btn{cursor:pointer;color:var(--text);font:inherit}.btn:disabled{opacity:.4;cursor:not-allowed}.ribbon{display:flex;align-items:center;margin:6px 0 4px;overflow-x:auto;padding:4px 0 8px}.rb-note{flex:0 0 auto;display:inline-flex;flex-direction:column;align-items:center;min-width:46px;padding:4px 6px;border:2px solid var(--panel-border);border-radius:10px;background:#0f172a;line-height:1.2;position:relative}.rb-note b{font-size:1.05rem}.rb-note small{color:var(--muted);font-size:.72rem}.rb-note.octave{opacity:.6}.rb-note.changed{border-color:var(--accent);background:#f59e0b2e;animation:flash 1.2s ease-out 2}.rb-note.changed small{color:var(--accent);font-weight:700}.rb-note.playing{border-color:#fff;transform:translateY(-2px)}@keyframes flash{0%{box-shadow:0 0 #f59e0be6}to{box-shadow:0 0 0 14px #f59e0b00}}.rb-step{min-width:26px;display:flex;justify-content:center;align-items:center;height:22px;color:var(--muted);font-weight:700;font-size:.85rem;position:relative}.rb-step:before{content:"";position:absolute;left:0;right:0;top:50%;border-top:2px dashed #475569}.rb-step span{position:relative;background:var(--panel);padding:0 5px}.ladder{display:flex;flex-wrap:wrap;gap:8px}.ladder button{flex:1 1 110px;background:#0f172a;border:2px solid var(--panel-border);border-radius:10px;color:var(--text);padding:6px 8px;cursor:pointer;font:inherit;text-align:center}.ladder button.active{border-color:var(--accent);background:#f59e0b1f}.ladder small{display:block;color:var(--muted);font-size:.75rem}.sentence{margin:8px 0;font-size:1.02rem;animation:fadein .5s ease-out}@keyframes fadein{0%{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}ol.steps{margin:12px 0 8px;padding-left:22px}ol.steps li{margin:8px 0}ol.steps li>span:first-child{display:inline-block;max-width:100%}.chips.inline{display:inline-flex;margin-left:10px;vertical-align:middle}.chip.tiny{min-width:0;padding:1px 8px;border-radius:999px;border-width:1px;font-size:.85rem;font-weight:700}.chord-diagram{display:block}.cd-title{fill:var(--text);font-size:13px;font-weight:700}.cd-base{fill:var(--muted);font-size:11px;font-weight:700}.cd-mark{fill:#94a3b8;font-size:15px;font-weight:700}.cd-finger{fill:#0b1220;font-size:11px;font-weight:800}.cd-open-note{font-size:9px;font-weight:700}.diagram-card{display:inline-flex;flex-direction:column;align-items:center;gap:4px;background:#0f172a;border:2px solid var(--panel-border);border-radius:12px;padding:6px 8px 8px;color:var(--text);font:inherit;cursor:pointer}.diagram-card.active{border-color:var(--accent);background:#f59e0b1a}.diagram-card small{color:var(--muted)}.cards{display:flex;flex-wrap:wrap;gap:10px}h3.sub{margin:8px 0 6px;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}input[type=range]{accent-color:var(--accent);width:100%}.ladder button:disabled{cursor:not-allowed}.text-input{background:#0f172a;color:var(--text);border:1px solid var(--panel-border);border-radius:8px;padding:7px 10px;font:inherit;font-size:.95rem;min-width:220px}.term{text-decoration:underline dotted var(--muted);cursor:help}.callout{border-left:4px solid #60a5fa;background:#60a5fa14;border-radius:6px;padding:8px 12px;margin:10px 0}.callout.warn{border-left-color:#fbbf24;background:#fbbf2414}.callout.idea{border-left-color:#34d399;background:#34d39914}.callout b{display:block;margin-bottom:2px}.lab{border:1px dashed var(--panel-border);border-radius:10px;padding:12px;margin:12px 0;background:#0f172a80}.quickcheck{border:1px solid var(--panel-border);border-radius:10px;padding:10px 12px;margin:12px 0;background:#0f172a80}.qc-choices{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.qc-choice{background:#0f172a;color:var(--text);border:2px solid var(--panel-border);border-radius:8px;padding:6px 12px;font:inherit;cursor:pointer}@media(hover:hover){.qc-choice:hover:not(:disabled){border-color:var(--accent)}}.qc-choice.right{border-color:#34d399;background:#34d39926}.qc-choice.wrong{border-color:#f87171;background:#f8717126}.qc-choice:disabled{opacity:.5;cursor:default}.notestrip{display:flex;flex-wrap:wrap;gap:4px;margin:10px 0}.nk{min-width:56px;padding:14px 6px 8px;border-radius:0 0 8px 8px;border:1px solid #0b1220;font:inherit;font-size:.85rem;font-weight:700;cursor:pointer}.nk.white{background:#e2e8f0;color:#0f172a;min-height:84px}.nk.black{background:#1e293b;color:#e2e8f0;border-color:#475569;min-height:60px}.nk.on{outline:3px solid var(--accent)}.nk.hl{box-shadow:inset 0 -6px 0 var(--accent)}.chip.on{background:#f59e0b26}.circle-lab{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.circle{width:min(360px,100%);flex:0 0 auto}.circle-key circle{fill:#0f172a;stroke:var(--panel-border);stroke-width:2;cursor:pointer}.circle-key.on circle{fill:#f59e0b33;stroke:var(--accent)}.circle-key{cursor:pointer}.ck-name{fill:var(--text);font-size:15px;font-weight:700}.ck-sig{fill:var(--muted);font-size:10px}.ck-minor{fill:#64748b;font-size:9px}.ck-center{fill:var(--text);font-size:16px;font-weight:700}.ck-center.small{font-size:11px;font-weight:400;fill:var(--muted)}.beats{display:flex;gap:6px;margin:10px 0}.beat{flex:1;min-width:34px;text-align:center;padding:6px 2px;border-radius:8px;border:2px solid var(--panel-border);background:#0f172a}.beat.main{border-color:#475569}.beat b{display:block;font-size:1.5rem}.beat small{color:var(--muted)}.beat.now{border-color:var(--accent);background:#f59e0b33}.lessons{display:grid;grid-template-columns:290px minmax(0,1fr);gap:14px;align-items:start}@media(max-width:860px){.lessons{grid-template-columns:minmax(0,1fr)}.lesson-list{max-height:240px;overflow-y:auto}}.lesson-list{position:sticky;top:8px;max-height:calc(100vh - 24px);overflow-y:auto}@media(max-width:860px){.lesson-list{position:static}}.progress-head .bar{height:8px;border-radius:6px;background:#0f172a;margin:6px 0 4px;overflow:hidden}.progress-head .bar>div{height:100%;background:var(--accent);transition:width .3s}.lesson-part{margin-top:8px}.lesson-link{display:flex;gap:8px;align-items:flex-start;width:100%;text-align:left;background:transparent;color:var(--text);border:0;border-radius:8px;padding:5px 6px;font:inherit;font-size:.9rem;cursor:pointer}@media(hover:hover){.lesson-link:hover{background:#94a3b81f}}.lesson-link.active{background:#f59e0b29;font-weight:600}.lesson-link .ln{flex:0 0 24px;height:24px;border-radius:50%;background:#0f172a;border:1px solid var(--panel-border);display:grid;place-items:center;font-size:.75rem;color:var(--muted)}.steps-nav{display:flex;align-items:center;gap:6px;margin:12px 0;flex-wrap:wrap}.step-dot{width:30px;height:30px;border-radius:50%;border:2px solid var(--panel-border);background:#0f172a;color:var(--muted);cursor:pointer;font:inherit}.step-dot.seen{border-color:#34d399;color:#34d399}.step-dot.active{border-color:var(--accent);background:var(--accent);color:var(--accent-text);font-weight:700}.lesson-step h3{margin:4px 0 8px;font-size:1.2rem}.lesson-step .tab{margin-top:14px}.lesson-step .panel .panel{background:#172033}.lesson-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;padding-top:14px;border-top:1px solid var(--panel-border)}.lesson-step>p{max-width:78ch}.feedback{margin-top:14px;border-radius:10px;padding:10px 14px;border:2px solid var(--panel-border)}.feedback.ok{border-color:#34d399;background:#34d3991a}.feedback.no{border-color:#f87171;background:#f8717114}.feedback p{margin:6px 0 10px}.meter{height:12px;border-radius:6px;background:#0f172a;overflow:hidden;border:1px solid var(--panel-border)}.meter>div{height:100%;transition:width .06s linear}.tuner-gauge{width:min(420px,100%);display:block}.tg-label{fill:var(--muted);font-size:10px}.steplist{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}.stepitem{display:inline-flex;align-items:center;gap:8px;padding:4px 10px;border:1px solid var(--panel-border);border-radius:999px;background:#0f172a;font-size:.85rem;color:var(--muted)}.stepitem .sn{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:#1e293b;font-size:.75rem}.stepitem.now{border-color:var(--accent);color:var(--text);background:#f59e0b26}.stepitem.ok{border-color:#34d399;color:#34d399}.row>*,.panel,.lesson,.lesson-step{min-width:0}.strumplayer{display:flex;flex-direction:column;gap:14px}.banner{min-height:1.6em;margin-bottom:8px;font-size:1.05rem}.pgrid-scroll{overflow-x:auto;padding-bottom:4px}.pgrid{display:flex;flex-direction:column;gap:2px}.prow{display:grid}.pc{text-align:center;padding:3px 0;border-left:1px solid transparent;transition:background .05s;position:relative}.pc.beat-start{border-left:2px solid #475569}.labels .pc{color:var(--muted);font-size:.85rem}.labels .pc.num{color:var(--text);font-weight:800;font-size:1.05rem}.strokes .pc{min-height:62px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0f172a;border-radius:6px;margin:0 1px}.strokes .glyph{font-size:1.9rem;line-height:1;font-weight:600;color:var(--text)}.strokes .pc small{font-size:.6rem;color:var(--muted)}.strokes .pc.accent .glyph{font-size:2.4rem;font-weight:900;color:var(--accent)}.strokes .pc.ghost .glyph{opacity:.4}.strokes .pc.light .glyph{font-size:1.4rem;opacity:.8}.strokes .pc.short:after{content:"";position:absolute;bottom:6px;width:8px;height:3px;border-radius:2px;background:var(--muted)}.strokes .pc.rest{background:transparent}.strokes .pc.rest .glyph{color:#475569;font-size:1.3rem}.strokes .pc.editable{cursor:pointer}@media(hover:hover){.strokes .pc.editable:hover{outline:2px solid var(--accent)}}.strokes .pc.now,.labels .pc.now,.hand .pc.now{background:#f59e0b52}.strokes.countin .pc.now{background:#60a5fa4d}.hand .pc{font-size:1.2rem;color:var(--muted);min-height:28px}.hand .pc.hit{color:#34d399;font-weight:800}.hand .pc.miss{color:#64748b;opacity:.7}.hand .pc.none{opacity:.3}.pgrid-legend{display:flex;flex-wrap:wrap;gap:4px 18px;margin-top:6px;color:var(--muted);font-size:.8rem}.mixer{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:8px 22px}.mix-row{display:flex;flex-direction:column;gap:4px}.mix-row.off{opacity:.5}.techniques{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px}.technique{background:#0f172a;border:1px solid var(--panel-border);border-radius:10px;padding:10px 12px}.technique p{margin:4px 0 0;font-size:.92rem;color:#cbd5e1}.timing-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px;margin-bottom:8px}.stat{background:#0f172a;border:1px solid var(--panel-border);border-radius:10px;padding:8px 10px;display:flex;flex-direction:column;line-height:1.25}.stat b{font-size:1.5rem}.stat small{color:var(--muted);font-size:.75rem}.offsets{display:flex;flex-direction:column;gap:3px;max-height:260px;overflow-y:auto}.off-track{position:relative;height:10px;border-radius:5px;background:#0f172a;border:1px solid var(--panel-border)}.off-mid{position:absolute;left:50%;top:-2px;bottom:-2px;width:2px;background:#34d399}.off-dot{position:absolute;top:0;width:10px;height:10px;margin-left:-5px;border-radius:50%;background:#60a5fa}.off-dot.bad{background:#f87171}.drill-transport{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.drill-transport .phase{flex:1 1 220px;padding:6px 12px;border-radius:8px;background:#0b1220;border:1px solid var(--panel-border);color:var(--muted)}.drill-transport .phase.you{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:700}.loopcount{color:var(--muted);min-width:130px}.mini-slider{display:flex;flex-direction:column;gap:2px;min-width:96px}.mini-slider small{color:var(--muted)}.trainer{margin:8px 0;padding:8px 10px;border:1px dashed var(--panel-border);border-radius:8px}.text-input{background:#0b1220;color:var(--text);border:1px solid var(--panel-border);border-radius:6px;padding:5px 8px;font:inherit}.tabstrip{display:flex;flex-wrap:wrap;gap:8px 4px;margin:10px 0}.tabbar{max-width:100%;overflow-x:auto;background:#0b1220;border:1px solid var(--panel-border);border-radius:8px}.tabbar svg{display:block}.tab-string{stroke:#64748b;stroke-width:1}.tab-beat{stroke:#334155;stroke-width:1;stroke-dasharray:2 3}.tab-playhead{fill:#f59e0b38;stroke:var(--accent);stroke-width:1}.tab-cell{fill:#0b1220}.tab-fret{fill:var(--text);font:700 12px system-ui,sans-serif}.tab-fret.legato{fill:#93c5fd}.tab-fret.dead{fill:#f87171}.tab-clef{fill:#94a3b8;font:700 10px system-ui,sans-serif}.tab-barno{fill:#64748b;font:10px system-ui,sans-serif}.tab-label{fill:var(--accent);font:700 12px system-ui,sans-serif}.tab-pick{fill:#cbd5e1;font:13px system-ui,sans-serif}.tab-pick.finger{font-style:italic;fill:#a7f3d0}.tab-accent{fill:#fbbf24;font:700 12px system-ui,sans-serif}.tab-mark{fill:#94a3b8;font:10px system-ui,sans-serif}.tab-pm{stroke:#94a3b8;stroke-dasharray:3 3}.tab-finger{fill:#0b1220;font:700 10px system-ui,sans-serif}.tab-count{fill:#64748b;font:10px system-ui,sans-serif}.tab-count.beat{fill:#cbd5e1;font-weight:700}.tab-slur{fill:none;stroke:#93c5fd;stroke-width:1.3}.tab-slur-label{fill:#93c5fd;font:italic 10px system-ui,sans-serif}.drill-fretboard{margin:6px 0}.chord-now{display:flex;flex-wrap:wrap;gap:24px;margin:8px 0}.chord-now>div{display:flex;flex-direction:column;align-items:flex-start}.drill-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}.drill-card{display:flex;flex-direction:column;gap:4px;text-align:left;background:#0b1220;color:var(--text);border:1px solid var(--panel-border);border-radius:10px;padding:10px 12px;cursor:pointer;font:inherit}@media(hover:hover){.drill-card:hover{border-color:var(--accent)}}.drill-card.selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}.drill-card .hint{font-size:.85em}.drill-card-meta{display:flex;flex-wrap:wrap;gap:4px 12px;color:var(--muted);font-size:.85em}.lvl{font-weight:600}.lvl.beginner{color:#34d399}.lvl.improving{color:#fbbf24}.week-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:8px;margin:10px 0}.day-card{display:flex;flex-direction:column;gap:3px;text-align:left;background:#0b1220;color:var(--text);border:1px solid var(--panel-border);border-radius:10px;padding:10px;cursor:pointer;font:inherit}.day-card.today{border-color:#60a5fa}.day-card.picked{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}.day-name{color:var(--muted);font-size:.85em;text-transform:uppercase;letter-spacing:.04em}.day-name .tick{color:#34d399}.day-detail{margin-top:12px}.blocklist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.blocklist li{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:8px;padding:6px 10px;background:#0b1220;border-radius:8px}.blk-main{display:flex;flex-direction:column}.blk-min{color:var(--muted);white-space:nowrap}.session-top{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.session-clock{display:flex;flex-direction:column;align-items:center;min-width:110px}.session-clock .clock{font:700 2.4rem/1 ui-monospace,monospace;color:var(--accent)}.bar-track{height:8px;background:#0b1220;border-radius:999px;overflow:hidden;margin:4px 0}.bar-track>div{height:100%;background:#34d399}.big-steps li{font-size:1.1em;margin:6px 0}.rating-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;margin:0 0 12px}.rating-list li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px;padding:8px 10px;background:#0b1220;border-radius:8px}.score-paper{background:#f8fafc;color:#111827;border-radius:10px;padding:6px 2px 2px;overflow-x:auto}.score-svg{display:block;max-width:100%}.score-svg .ink{fill:#111827}.score-svg .staff-line{stroke:#111827;stroke-width:.9}.score-svg .bar-line{stroke:#111827;stroke-width:1.1}.score-svg .bar-thick{stroke:#111827;stroke-width:3.4}.score-svg .stem{stroke:#111827;stroke-width:1.15}.score-svg .ledger{stroke:#111827;stroke-width:1.1}.score-svg .beam{fill:#111827}.score-svg .tie{stroke:#111827;stroke-width:1.2;fill:none}.score-svg .tab-bg{fill:#f8fafc}.score-svg .tab-num{font:700 12px system-ui,sans-serif;fill:#111827}.score-svg .tab-num.harm{font-size:10px}.score-svg .chord-symbol{font:700 13px system-ui,sans-serif}.score-svg .tempo-word{font:italic 700 13px Georgia,serif}.score-svg .tempo-eq{font:600 12px system-ui,sans-serif}.score-svg .nav-text{font:italic 700 12px Georgia,serif}.score-svg .ending{stroke:#111827;fill:none}.score-svg .ending-text{font:12px system-ui,sans-serif}.score-svg .hairpin polyline,.score-svg .triplet polyline{stroke:#111827;stroke-width:1.1;fill:none}.score-svg .triplet text{font:italic 700 12px Georgia,serif}.score-svg .tech path,.score-svg .tech polyline,.score-svg .tech line,.score-svg .tech-line{stroke:#334155;stroke-width:1.1;fill:none}.score-svg .tech-text{fill:#334155;font:italic 10px system-ui,sans-serif}.score-svg .note-name{font:600 10px system-ui,sans-serif;fill:#475569}.score-svg .tab-rhythm line,.score-svg .tab-flag{stroke:#111827;stroke-width:1.1}.score-svg .hl{fill:transparent}.score-svg .hl.on{fill:#f59e0b4d}.score-svg .hl[data-event]{cursor:default}.symbol-svg .ink{fill:#111827}.example-player+.example-player{margin-top:14px;padding-top:12px;border-top:1px solid var(--panel-border)}.step-n{display:inline-grid;place-items:center;width:1.5em;height:1.5em;margin-right:6px;border-radius:50%;background:var(--accent);color:var(--accent-text);font-size:.85em}.staff-clicker .hit{fill:transparent;cursor:pointer}@media(hover:hover){.staff-clicker .hit:hover{fill:#f59e0b38}}.staff-clicker .hit.on{fill:#f59e0b52}.note-grid{display:flex;flex-direction:column;gap:6px;margin:8px 0 12px}.note-row{display:flex;flex-wrap:wrap;align-items:center;gap:4px}.note-oct{color:var(--muted);font-size:.8em;min-width:64px}.note-btn{min-width:42px;padding:5px 6px;background:#0b1220;color:var(--text);border:1px solid var(--panel-border);border-radius:8px;cursor:pointer;font:inherit;font-weight:600}.note-btn small{color:var(--muted);margin-left:1px;font-weight:400}.note-btn.black{background:#172033}.note-btn.on{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.note-btn.on small{color:var(--accent-text)}.note-detail{border-top:1px solid var(--panel-border);padding-top:10px}.note-sections p{margin:0 0 8px}.lib-layout{display:grid;grid-template-columns:250px 1fr;gap:16px;align-items:start}.lib-list{max-height:640px;overflow-y:auto;border:1px solid var(--panel-border);border-radius:10px;padding:6px;background:#0b1220}.lib-cat{margin:8px 6px 2px;color:var(--muted);font-size:.75em;text-transform:uppercase;letter-spacing:.05em}.lib-item{display:block;width:100%;text-align:left;background:transparent;color:var(--text);border:0;border-radius:6px;padding:5px 8px;cursor:pointer;font:inherit}@media(hover:hover){.lib-item:hover{background:#172033}}.lib-item.on{background:var(--accent);color:var(--accent-text);font-weight:600}.symbol-head{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:flex-start}.symbol-figure{background:#f8fafc;border-radius:10px;padding:6px 12px;display:grid;place-items:center;min-width:100px}.big-text{color:#111827;font:700 2.4rem/1.2 Georgia,serif}@media(max-width:760px){.lib-layout{grid-template-columns:1fr}.lib-list{max-height:260px}}.score-paper.fixed{display:inline-block;max-width:100%}.app-footer{margin-top:28px;padding-top:12px;border-top:1px solid var(--panel-border);color:var(--muted);font-size:.82rem}.app-footer p{margin:0}.tab-loading{padding:24px 4px}.fb.phone{min-width:0;max-width:none}.fb.phone .fb-string-label{font-size:20px}.fb.phone .fb-dot-label{font-size:15.5px}.fb.phone .fb-fret-number{font-size:16px}.fb.phone .fb-badge,.fb.phone .fb-arrow-label{font-size:15px}.fb.phone .fb-muted{font-size:30px}.fb.phone .fb-jog-label{font-size:16px}.fb.phone .fb-jog-label.sub{font-size:15px}.fb-wrap.phone .fb-scroll{overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}.fb-swipe-hint{margin:4px 0 0;font-size:.8rem;color:var(--accent)}@media(pointer:coarse){a,button,input,select,label{-webkit-tap-highlight-color:rgba(245,158,11,.25)}select,textarea,input[type=text],input[type=number],input[type=search],input[type=email],.text-input{font-size:16px}.btn,.btn.small,.seg-btn,.tab-btn,.qc-choice,.lib-item,.lesson-link,.stepitem,.chip-btn{min-height:44px}.btn,.btn.small,.seg-btn,.chip-btn{display:inline-flex;align-items:center;justify-content:center}.note-btn{min-height:44px;min-width:44px}.step-dot{width:44px;height:44px}select{min-height:44px}input[type=range]{min-height:32px}input[type=checkbox],input[type=radio]{width:22px;height:22px}.check{min-height:44px}}@media(max-width:640px){:root{--nav-h: 60px}body{font-size:16px}.app{padding:10px 12px calc(40px + env(safe-area-inset-bottom,0px));padding-left:max(12px,env(safe-area-inset-left,0px));padding-right:max(12px,env(safe-area-inset-right,0px))}.app-header h1{font-size:1.3rem}.app-header p{margin:0 0 6px;font-size:.9rem}.tabs{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;overscroll-behavior-x:contain;margin:0 -12px 12px;padding:8px 12px;background:var(--bg);box-shadow:0 6px 12px -8px #0009}.tabs::-webkit-scrollbar{display:none}.tab-btn{flex:0 0 auto}.tab{gap:12px}.panel{padding:12px;border-radius:10px}.panel .panel{padding:10px}.controls{gap:12px}.controls>.field,.controls>label.field{flex:1 1 100%}.field select,.field .text-input{width:100%;min-width:0!important}.actions{margin-left:0}.beats{flex-wrap:wrap}.row>.note-info{min-width:0;flex-basis:100%}.drill-transport{position:sticky;top:calc(env(safe-area-inset-top,0px) + var(--nav-h));z-index:15;margin:0 -12px;padding:8px 12px;background:var(--panel);box-shadow:0 6px 12px -8px #0009}.drill-transport .phase{flex-basis:160px}.loopcount{min-width:0}.strum-float{position:fixed;right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));z-index:30;box-shadow:0 6px 18px #00000080}}.staff-picker{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch}.staff-picker .score-paper{flex:1 1 300px;min-width:0}.staff-arrows{display:flex;flex-direction:column;gap:8px;justify-content:center}.staff-arrows .btn{min-width:112px;min-height:48px}@media(max-width:640px){.staff-arrows{flex-direction:row;flex:1 1 100%}.staff-arrows .btn{flex:1}}.pgrid-explain{margin:6px 0 2px;font-size:.88rem;color:var(--text);min-height:1.4em}