.cf437-body{background:#f5f6f8;color:#111827}.cf437-page{padding-bottom:32px}.cf437-hero{display:flex;justify-content:space-between;gap:24px;align-items:end;padding:30px 0 18px}.cf437-hero h1{font-size:clamp(2.5rem,6vw,5rem);letter-spacing:-.055em;margin:5px 0 6px;line-height:.95}.cf437-hero p{max-width:720px;margin:0;color:#4b5563;font-size:1rem}.cf437-trust{display:flex;gap:8px}.cf437-trust div{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:11px 13px;min-width:112px}.cf437-trust strong,.cf437-trust span{display:block}.cf437-trust strong{font-size:.92rem}.cf437-trust span{font-size:.7rem;color:#6b7280;margin-top:2px}.cf437-core,.cf437-progress{background:#fff;border:1px solid #e2e5ea;border-radius:24px;padding:18px;box-shadow:0 12px 35px #1118270b}.cf437-toolbar{display:grid;grid-template-columns:auto auto 1fr auto;gap:8px;align-items:center;padding-bottom:13px;border-bottom:1px solid #eceff3}.cf437-segment{display:inline-flex;background:#f3f4f6;border-radius:12px;padding:3px}.cf437-segment button{border:0;background:transparent;border-radius:9px;min-height:38px;padding:0 12px;font-weight:850;color:#6b7280}.cf437-segment button.active{background:#fff;color:#111827;box-shadow:0 1px 4px #0002}.cf437-toolbar>button{min-height:44px;border:1px solid #d1d5db;border-radius:12px;background:#fff;padding:0 13px;font-weight:850}.cf437-toolbar .cf437-primary{justify-self:start;background:#111827;color:#fff;border-color:#111827}.cf437-main{display:grid;grid-template-columns:minmax(440px,1.08fr) minmax(310px,.72fr);gap:18px;align-items:center;padding:16px 0}.cf437-wheelwrap{position:relative;min-width:0}.cf437-wheel{display:block;width:min(100%,610px);aspect-ratio:1;margin:auto;filter:drop-shadow(0 10px 20px #11182716)}.cf437-wedge{cursor:pointer;outline:none}.cf437-wedge path{fill:#f3f4f6;stroke:#fff;stroke-width:2;transition:fill .15s,opacity .15s,transform .15s}.cf437-wedge 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solid #e5e7eb;background:#fafafa;border-radius:20px;padding:18px}.cf437-kicker{font-size:.68rem;letter-spacing:.11em;font-weight:950;color:#6366f1}.cf437-keycard h2{font-size:clamp(2.2rem,5vw,4.2rem);letter-spacing:-.05em;margin:6px 0 8px}.cf437-badges{display:flex;gap:6px;flex-wrap:wrap}.cf437-badges span{background:#eef2ff;color:#3730a3;border-radius:999px;padding:6px 9px;font-size:.76rem;font-weight:850}.cf437-scale{display:flex;gap:6px;flex-wrap:wrap;margin:14px 0}.cf437-scale button{border:0;background:#111827;color:white;border-radius:11px;min-width:39px;padding:8px 9px;font-weight:900}.cf437-scale button:first-child{background:#4f46e5}.cf437-factgrid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.cf437-factgrid div{background:white;border:1px solid #e5e7eb;border-radius:13px;padding:10px}.cf437-factgrid span,.cf437-factgrid strong{display:block}.cf437-factgrid span{font-size:.69rem;color:#6b7280}.cf437-factgrid strong{font-size:.86rem;margin-top:3px}.cf437-cardactions{display:grid;grid-template-columns:1fr 1fr 1fr;gap:7px;margin-top:12px}.cf437-cardactions button{min-height:42px;border:1px solid #d1d5db;border-radius:11px;background:#fff;font-weight:850}.cf437-cardactions button:first-child{background:#111827;color:#fff;border-color:#111827}.cf437-chordhead{display:flex;justify-content:space-between;gap:14px;align-items:end;padding-top:14px;border-top:1px solid #eceff3}.cf437-chordhead h3{margin:4px 0 0;font-size:1.25rem}.cf437-chordhead button{border:1px solid #d1d5db;background:#fff;border-radius:11px;min-height:40px;padding:0 12px;font-weight:850}.cf437-chords{display:grid;grid-template-columns:repeat(7,minmax(110px,1fr));gap:7px;margin:11px 0 15px;overflow:auto}.cf437-chord{border:1px solid #e5e7eb;background:#fff;border-radius:14px;padding:10px;text-align:left;min-width:108px}.cf437-chord b,.cf437-chord strong,.cf437-chord small{display:block}.cf437-chord b{font-size:.7rem;color:#6366f1}.cf437-chord strong{font-size:1.08rem;margin:2px 0 4px}.cf437-chord small{color:#6b7280;font-size:.7rem}.cf437-tabs{display:flex;gap:6px;border-bottom:1px solid #e5e7eb;overflow:auto}.cf437-tabs button{border:0;background:transparent;padding:10px 14px;font-weight:850;color:#6b7280;border-bottom:3px solid transparent}.cf437-tabs button.active{color:#111827;border-bottom-color:#4f46e5}.cf437-view{display:none;padding-top:13px}.cf437-view.active{display:block}.cf437-piano{position:relative;display:flex;height:172px;background:#111827;padding:0 5px 5px;border-radius:14px;overflow:hidden;user-select:none}.cf437-pkey{position:relative;border:1px solid #9ca3af;border-radius:0 0 6px 6px;display:flex;align-items:end;justify-content:center;font-weight:850;cursor:pointer}.cf437-pkey.white{flex:1;background:white;color:#6b7280;padding-bottom:7px}.cf437-pkey.white.in{background:#e0e7ff;color:#3730a3}.cf437-pkey.white.root{background:#c7d2fe}.cf437-pkey.black{position:absolute;z-index:2;top:0;width:4.1%;height:60%;background:#111827;color:#fff;border-color:#111827;font-size:.65rem;padding-bottom:5px}.cf437-pkey.black.in{background:#6366f1}.cf437-pkey.black.root{background:#4338ca}.cf437-guitar{overflow:auto;border:1px solid #e5e7eb;border-radius:14px}.cf437-string{display:grid;grid-template-columns:42px repeat(13,minmax(42px,1fr));min-width:680px;border-bottom:1px solid #e5e7eb}.cf437-string:last-child{border-bottom:0}.cf437-string>span,.cf437-string>button{min-height:34px;border:0;border-right:1px solid #e5e7eb;background:#fff;font-size:.68rem}.cf437-string>span{display:grid;place-items:center;font-weight:900;color:#6b7280}.cf437-string>button.in{background:#eef2ff;color:#3730a3;font-weight:900}.cf437-string>button.root{background:#4f46e5;color:#fff}.cf437-staff{border:1px solid #e5e7eb;border-radius:14px;padding:8px;overflow:auto}.cf437-staff svg{display:block;width:100%;min-width:620px;height:180px}.cf437-progress{margin-top:12px}.cf437-sectionhead{display:flex;justify-content:space-between;gap:18px;align-items:end}.cf437-sectionhead h2{font-size:1.55rem;margin:4px 0}.cf437-sectionhead p{margin:0;color:#6b7280;max-width:720px}.cf437-sectionhead button{min-height:44px}.cf437-presets{display:flex;gap:6px;flex-wrap:wrap;margin:14px 0 9px}.cf437-presets button{border:1px solid #d1d5db;background:#fff;border-radius:999px;padding:7px 10px;font-weight:850}.cf437-presets button.active{background:#111827;color:#fff}.cf437-progression{display:flex;gap:8px;overflow:auto}.cf437-progChord{min-width:125px;background:#f8fafc;border:1px solid #e5e7eb;border-radius:14px;padding:11px}.cf437-progChord b,.cf437-progChord strong,.cf437-progChord small{display:block}.cf437-progChord b{color:#6366f1;font-size:.72rem}.cf437-progChord strong{font-size:1.1rem;margin:2px 0}.cf437-progChord small{color:#6b7280}.cf437-transpose{display:grid;grid-template-columns:160px 130px 1fr;gap:8px;align-items:end;margin-top:12px;padding-top:12px;border-top:1px solid #eef0f3}.cf437-transpose label span,.cf437-modeControls label span{display:block;font-size:.7rem;color:#6b7280;font-weight:800;margin-bottom:4px}.cf437-transpose select,.cf437-modeControls select{width:100%;min-height:40px;border:1px solid #d1d5db;border-radius:10px;background:white;padding:0 9px}.cf437-transposed{font-weight:850;color:#374151;padding-bottom:9px}.cf437-panel{background:#fff;border:1px solid #e5e7eb;border-radius:18px;margin:10px 0;overflow:hidden}.cf437-panel summary{padding:14px 16px;display:flex;justify-content:space-between;gap:14px;cursor:pointer;font-weight:900}.cf437-panel summary small{color:#6b7280;font-weight:500}.cf437-panelbody{padding:0 16px 16px}.cf437-modeControls{display:grid;grid-template-columns:220px auto;gap:8px;align-items:end;max-width:460px}.cf437-modeControls button{min-height:40px;border:1px solid #d1d5db;border-radius:10px;background:#fff;font-weight:850}.cf437-modeInfo{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.cf437-modeInfo article{border:1px solid #e5e7eb;border-radius:13px;padding:11px;background:#fafafa}.cf437-modeInfo h3{margin:0 0 5px}.cf437-modeInfo p{margin:0;color:#4b5563}.cf437-practiceTop{display:flex;justify-content:space-between;gap:14px}.cf437-practiceTop h2{margin:5px 0;font-size:1.25rem}.cf437-score{text-align:center}.cf437-score strong{display:block;font-size:2rem}.cf437-score span{font-size:.7rem;color:#6b7280}.cf437-practiceActions{margin:9px 0}.cf437-practiceOptions{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}.cf437-practiceOptions button{min-height:46px;border:1px solid #d1d5db;border-radius:11px;background:#fff;font-weight:850}.cf437-practiceOptions button.correct{background:#ecfdf5;border-color:#86efac}.cf437-practiceOptions button.wrong{background:#fef2f2;border-color:#fca5a5}.cf437-feedback{min-height:24px;margin-top:7px;font-weight:850}.cf437-copy{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.cf437-copy article{padding:11px;background:#f8fafc;border-radius:13px}.cf437-copy h2{font-size:.94rem;margin:0 0 5px}.cf437-copy p{margin:0;color:#4b5563;font-size:.82rem}.cf437-toast{position:fixed;left:50%;bottom:82px;transform:translateX(-50%);z-index:20;background:#111827;color:#fff;padding:9px 13px;border-radius:999px;font-weight:850;font-size:.82rem;box-shadow:0 8px 28px #0003}
@media(max-width:800px){.cf437-page{padding-bottom:82px}.cf437-hero{display:block;padding:20px 0 11px}.cf437-hero h1{font-size:2.45rem}.cf437-hero p{font-size:.88rem}.cf437-trust{display:none}.cf437-core,.cf437-progress{padding:11px;border-radius:18px}.cf437-toolbar{grid-template-columns:1fr 1fr;gap:6px}.cf437-segment{width:100%}.cf437-segment button{flex:1;padding:0 8px;min-height:36px}.cf437-toolbar>button{min-height:39px}.cf437-toolbar .cf437-primary{justify-self:stretch}.cf437-main{grid-template-columns:1fr;gap:8px;padding:8px 0}.cf437-wheel{width:min(100%,330px)}.cf437-wheel .majorText{font-size:15px}.cf437-wheel .minorText{font-size:11px}.cf437-wheel .sigText{font-size:8px}.cf437-centerTitle{font-size:23px}.cf437-keycard{padding:12px;border-radius:15px}.cf437-keycard h2{font-size:2.2rem;margin:3px 0 6px}.cf437-badges span{padding:5px 7px;font-size:.69rem}.cf437-scale{margin:8px 0;gap:4px}.cf437-scale button{padding:6px 7px;min-width:34px;font-size:.8rem}.cf437-factgrid{gap:5px}.cf437-factgrid div{padding:7px}.cf437-factgrid span{font-size:.62rem}.cf437-factgrid strong{font-size:.76rem}.cf437-cardactions{margin-top:7px}.cf437-cardactions button{min-height:37px;font-size:.76rem}.cf437-chordhead{padding-top:9px}.cf437-chordhead h3{font-size:1rem}.cf437-chordhead button{min-height:36px;font-size:.72rem}.cf437-chords{grid-template-columns:repeat(7,96px);gap:5px;margin:7px 0 9px}.cf437-chord{padding:7px;min-width:94px}.cf437-tabs button{padding:8px 11px}.cf437-view{padding-top:8px}.cf437-piano{height:130px}.cf437-pkey.black{font-size:0}.cf437-pkey.white{font-size:.64rem}.cf437-sectionhead{display:block}.cf437-sectionhead h2{font-size:1.25rem}.cf437-sectionhead p{font-size:.82rem}.cf437-sectionhead button{margin-top:9px}.cf437-progress{margin-top:8px}.cf437-presets{margin:9px 0 7px}.cf437-presets button{font-size:.72rem;padding:6px 8px}.cf437-progression{gap:6px}.cf437-progChord{min-width:105px;padding:8px}.cf437-transpose{grid-template-columns:1fr 1fr}.cf437-transposed{grid-column:1/-1;font-size:.82rem;padding:3px 0}.cf437-panel{margin:8px 0}.cf437-panel summary{padding:12px;font-size:.88rem}.cf437-panel summary small{display:none}.cf437-panelbody{padding:0 12px 12px}.cf437-modeControls{grid-template-columns:1fr auto}.cf437-modeInfo{grid-template-columns:1fr}.cf437-practiceOptions{grid-template-columns:1fr 1fr}.cf437-copy{grid-template-columns:1fr}.cf437-wheelkeys{display:none}}