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var(--tw-drop-shadow)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-all{transition-property:all;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-colors{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-opacity{transition-property:opacity;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.transition-transform{transition-property:transform;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}.duration-200{transition-duration:.2s}.duration-300{transition-duration:.3s}.duration-700{transition-duration:.7s}.ease-in-out{transition-timing-function:cubic-bezier(.4,0,.2,1)}.ease-out{transition-timing-function:cubic-bezier(0,0,.2,1)}@font-face{font-family:Nunito;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/nunito-400.woff2) format("woff2")}@font-face{font-family:Nunito;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/nunito-600.woff2) format("woff2")}@font-face{font-family:Nunito;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/nunito-700.woff2) format("woff2")}@font-face{font-family:Nunito;font-style:normal;font-weight:800;font-display:swap;src:url(/fonts/nunito-800.woff2) format("woff2")}@font-face{font-family:Nunito;font-style:normal;font-weight:900;font-display:swap;src:url(/fonts/nunito-900.woff2) format("woff2")}:root{--bg-primary:#FFFFFF;--bg-secondary:#F7F7F8;--bg-card:#FFFFFF;--bg-elevated:#F0F0EF;--bg-accent:#EBEBEB;--bg-nav:#EBEBEB;--text-primary:#1A1A1A;--text-secondary:#666666;--text-muted:#858481;--text-disabled:#B9B9B7;--text-inverse:#1A1A1A;--accent:#1A1A19;--accent-light:#F0F0F0;--accent-color:#1A1A19;--border-color:rgba(0,0,0,0.15);--border-hover:rgba(0,0,0,0.2);--border-light:rgba(0,0,0,0.06);--shadow-color:rgba(0,0,0,0.08);--shadow-s:rgba(0,0,0,0.05);--staff-line:rgba(52,50,45,0.18);--staff-note:rgba(52,50,45,0.8);--staff-note-active:#34322D;--staff-bg:transparent;--rhythm-line:rgba(0,0,0,0.5);--rhythm-tick:rgba(0,0,0,0.5);--rhythm-bar-fill:rgba(0,0,0,0.75);--rhythm-bar-stroke:rgba(0,0,0,0.6);--rhythm-note:rgba(0,0,0,0.85);--glow:rgba(0,0,0,0.03);--accent-dot:#34322D;--btn-primary:#1A1A19;--btn-primary-text:#FFFFFF;--color-success:#4CAF50;--color-warning:#FF9800;--color-error:#F44336;--piano-white-top:#FAFAFA;--piano-white-bottom:#F5F5F5;--piano-black-top:#3A3A3A;--piano-black-bottom:#1A1A1A;--piano-black-gloss:rgba(255,255,255,0.12);--piano-key-border:rgba(0,0,0,0.08);--piano-shadow:0 6px 20px rgba(0,0,0,0.12);--btn-3d-offset:0px;--btn-primary-shade:transparent;--btn-secondary-bg:#FFFFFF;--btn-secondary-border:#E5E5E5;--btn-secondary-shade:transparent;--btn-secondary-text:#1A1A19;--btn-danger:#F44336;--btn-danger-shade:transparent;--color-blue:#1976D2;--color-blue-shade:#1565C0;--color-yellow:#FF9800;--color-purple:#9C27B0;--font-weight-heading:700;--font-weight-button:600;--border-radius-btn:12px;--border-radius-card:16px;color-scheme:light}[data-theme=dark]{--bg-primary:#1A1A1C;--bg-secondary:#2A2A2C;--bg-card:#333336;--bg-elevated:#383739;--bg-accent:#272728;--bg-nav:#212122;--text-primary:#E8E8E8;--text-secondary:#999999;--text-muted:#7F7F7F;--text-disabled:#5F5F5F;--text-inverse:#E8E8E8;--accent:#FFFFFF;--accent-light:#3D2E5C;--accent-color:#FFFFFF;--border-color:rgba(255,255,255,0.08);--border-hover:rgba(255,255,255,0.16);--border-light:rgba(255,255,255,0.06);--shadow-color:rgba(0,0,0,0.4);--shadow-s:rgba(0,0,0,0.24);--staff-line:rgba(255,255,255,0.45);--staff-note:rgba(255,255,255,0.9);--staff-note-active:#FFFFFF;--staff-bg:#2A2A2C;--rhythm-line:rgba(255,255,255,0.1);--rhythm-tick:rgba(248,248,248,0.4);--rhythm-bar-fill:rgba(248,248,248,0.15);--rhythm-bar-stroke:rgba(248,248,248,0.3);--rhythm-note:rgba(248,248,248,0.7);--glow:rgba(255,255,255,0.03);--accent-dot:#DADADA;--btn-primary:#FFFFFF;--btn-primary-text:#000000;--color-success:#66BB6A;--color-warning:#FFA726;--color-error:#EF5350;--piano-white-top:#D8D8D8;--piano-white-bottom:#D0D0D0;--piano-black-top:#2A2A2A;--piano-black-bottom:#0A0A0A;--piano-black-gloss:rgba(255,255,255,0.06);--piano-key-border:rgba(0,0,0,0.15);--piano-shadow:0 6px 20px rgba(0,0,0,0.4);--btn-3d-offset:0px;--btn-primary-shade:transparent;--btn-secondary-bg:#333336;--btn-secondary-border:rgba(255,255,255,0.08);--btn-secondary-shade:transparent;--btn-secondary-text:#E8E8E8;--btn-danger:#EF5350;--btn-danger-shade:transparent;--color-blue:#42A5F5;--color-blue-shade:#1E88E5;--color-yellow:#FFA726;--color-purple:#CE93D8;--font-weight-heading:700;--font-weight-button:600;--border-radius-btn:12px;--border-radius-card:16px;color-scheme:dark}[data-theme=light-pink]{--bg-primary:#FFF5F5;--bg-secondary:#FFF0F0;--bg-card:#FFFFFF;--bg-elevated:#FFF0F0;--bg-accent:#FFE8E8;--bg-nav:#FFE8E8;--text-primary:#1A1A1A;--text-secondary:#666666;--text-muted:#858481;--text-disabled:#B9B9B7;--text-inverse:#FFFFFF;--accent:#E53935;--accent-light:#FFCDD2;--accent-color:#E53935;--border-color:rgba(229,57,53,0.18);--border-hover:rgba(229,57,53,0.3);--border-light:rgba(229,57,53,0.08);--shadow-color:rgba(229,57,53,0.1);--shadow-s:rgba(229,57,53,0.06);--staff-line:rgba(52,50,45,0.18);--staff-note:rgba(52,50,45,0.8);--staff-note-active:#E53935;--staff-bg:transparent;--rhythm-line:rgba(0,0,0,0.5);--rhythm-tick:rgba(0,0,0,0.5);--rhythm-bar-fill:rgba(0,0,0,0.75);--rhythm-bar-stroke:rgba(0,0,0,0.6);--rhythm-note:rgba(0,0,0,0.85);--glow:rgba(229,57,53,0.04);--accent-dot:#E53935;--btn-primary:#E53935;--btn-primary-text:#FFFFFF;--color-success:#4CAF50;--color-warning:#FF9800;--color-error:#F44336;--piano-white-top:#FFF8F8;--piano-white-bottom:#F5EFEF;--piano-black-top:#3A2A2A;--piano-black-bottom:#1A1010;--piano-black-gloss:rgba(255,255,255,0.12);--piano-key-border:rgba(0,0,0,0.08);--piano-shadow:0 6px 20px rgba(0,0,0,0.12);--btn-3d-offset:0px;--btn-primary-shade:transparent;--btn-secondary-bg:#FFFFFF;--btn-secondary-border:rgba(229,57,53,0.18);--btn-secondary-shade:transparent;--btn-secondary-text:#E53935;--btn-danger:#F44336;--btn-danger-shade:transparent;--color-blue:#1976D2;--color-blue-shade:#1565C0;--color-yellow:#FF9800;--color-purple:#9C27B0;--font-weight-heading:700;--font-weight-button:600;--border-radius-btn:12px;--border-radius-card:16px;color-scheme:light}[data-theme=light-blue]{--bg-primary:#F0F7FF;--bg-secondary:#E8F1FA;--bg-card:#FFFFFF;--bg-elevated:#EDF3FB;--bg-accent:#E3EEFA;--bg-nav:#E3EEFA;--text-primary:#1A1A1A;--text-secondary:#666666;--text-muted:#858481;--text-disabled:#B9B9B7;--text-inverse:#FFFFFF;--accent:#1976D2;--accent-light:#BBDEFB;--accent-color:#1976D2;--border-color:rgba(25,118,210,0.18);--border-hover:rgba(25,118,210,0.3);--border-light:rgba(25,118,210,0.08);--shadow-color:rgba(25,118,210,0.1);--shadow-s:rgba(25,118,210,0.06);--staff-line:rgba(52,50,45,0.18);--staff-note:rgba(52,50,45,0.8);--staff-note-active:#1976D2;--staff-bg:transparent;--rhythm-line:rgba(0,0,0,0.5);--rhythm-tick:rgba(0,0,0,0.5);--rhythm-bar-fill:rgba(0,0,0,0.75);--rhythm-bar-stroke:rgba(0,0,0,0.6);--rhythm-note:rgba(0,0,0,0.85);--glow:rgba(25,118,210,0.04);--accent-dot:#1976D2;--btn-primary:#1976D2;--btn-primary-text:#FFFFFF;--color-success:#4CAF50;--color-warning:#FF9800;--color-error:#F44336;--piano-white-top:#F8FBFF;--piano-white-bottom:#EFF3F8;--piano-black-top:#2A3040;--piano-black-bottom:#101820;--piano-black-gloss:rgba(255,255,255,0.12);--piano-key-border:rgba(0,0,0,0.08);--piano-shadow:0 6px 20px rgba(0,0,0,0.12);--btn-3d-offset:0px;--btn-primary-shade:transparent;--btn-secondary-bg:#FFFFFF;--btn-secondary-border:rgba(25,118,210,0.18);--btn-secondary-shade:transparent;--btn-secondary-text:#1976D2;--btn-danger:#F44336;--btn-danger-shade:transparent;--color-blue:#1976D2;--color-blue-shade:#1565C0;--color-yellow:#FF9800;--color-purple:#9C27B0;--font-weight-heading:700;--font-weight-button:600;--border-radius-btn:12px;--border-radius-card:16px;color-scheme:light}[data-theme=duolingo]{--bg-primary:#FFFFFF;--bg-secondary:#F9FAFB;--bg-card:#FFFFFF;--bg-elevated:#F3F4F6;--bg-accent:#E5E5E5;--bg-nav:#FFFFFF;--text-primary:#3C3C3C;--text-secondary:#6B7280;--text-muted:#AFAFAF;--text-disabled:#D1D5DB;--text-inverse:#FFFFFF;--accent:#58CC02;--accent-light:#D7FFB8;--accent-color:#58CC02;--border-color:#E5E5E5;--border-hover:#D1D5DB;--border-light:#F3F4F6;--shadow-color:rgba(0,0,0,0.08);--shadow-s:rgba(0,0,0,0.05);--staff-line:rgba(60,60,60,0.2);--staff-note:rgba(60,60,60,0.8);--staff-note-active:#58CC02;--staff-bg:transparent;--rhythm-line:rgba(0,0,0,0.15);--rhythm-tick:rgba(0,0,0,0.4);--rhythm-bar-fill:rgba(0,0,0,0.6);--rhythm-bar-stroke:rgba(0,0,0,0.5);--rhythm-note:rgba(0,0,0,0.75);--glow:rgba(88,204,2,0.06);--accent-dot:#58CC02;--btn-primary:#58CC02;--btn-primary-text:#FFFFFF;--color-success:#58CC02;--color-warning:#FFC800;--color-error:#FF4B4B;--piano-white-top:#FAFAFA;--piano-white-bottom:#F0F0F0;--piano-black-top:#3C3C3C;--piano-black-bottom:#1A1A1A;--piano-black-gloss:rgba(255,255,255,0.1);--piano-key-border:rgba(0,0,0,0.06);--piano-shadow:0 6px 20px rgba(0,0,0,0.1);--btn-3d-offset:4px;--btn-primary-shade:#58A700;--btn-secondary-bg:#FFFFFF;--btn-secondary-border:#E5E5E5;--btn-secondary-shade:#D1D5DB;--btn-secondary-text:#1CB0F6;--btn-danger:#FF4B4B;--btn-danger-shade:#EA2B2B;--color-blue:#1CB0F6;--color-blue-shade:#1899D6;--color-yellow:#FFC800;--color-purple:#CE82FF;--font-weight-heading:900;--font-weight-button:800;--border-radius-btn:16px;--border-radius-card:16px;color-scheme:light}[data-theme=duolingo],[data-theme=duolingo] body{font-family:Nunito,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif}[data-theme=duolingo] h1,[data-theme=duolingo] h2,[data-theme=duolingo] h3{font-weight:var(--font-weight-heading,900)}[data-theme=duolingo] button{font-weight:var(--font-weight-button,800);text-transform:uppercase;letter-spacing:.05em}[data-theme=duolingo] .btn-3d{transition:all .1s;border-bottom-width:var(--btn-3d-offset,4px);border-bottom-style:solid}[data-theme=duolingo] .btn-3d:active:not(:disabled),[data-theme=duolingo] .btn-3d:disabled{border-bottom-width:0;transform:translateY(var(--btn-3d-offset,4px))}[data-theme=duolingo] .btn-3d:disabled{opacity:.5;cursor:not-allowed}[data-theme=duolingo] .btn-3d[data-variant=primary]{border-bottom-color:var(--btn-primary-shade,transparent)}[data-theme=duolingo] .btn-3d[data-variant=secondary]{border-bottom-color:var(--btn-secondary-shade,transparent);background-color:var(--btn-secondary-bg,transparent);color:var(--btn-secondary-text,var(--btn-primary));border-color:var(--btn-secondary-border,var(--border-color))}[data-theme=duolingo] .option-btn{border-bottom:var(--btn-3d-offset,0) solid var(--btn-secondary-shade,transparent)!important;border-radius:16px!important;font-weight:700!important;transition:all .1s}[data-theme=duolingo] .option-btn:active:not(:disabled){border-bottom-width:0!important;transform:translateY(var(--btn-3d-offset,0))}[data-theme=duolingo] .option-btn.option-btn-correct{background-color:rgba(88,204,2,.15)!important;border-color:#58CC02!important;color:#58A700!important}[data-theme=duolingo] .option-btn.option-btn-wrong{background-color:rgba(255,75,75,.15)!important;border-color:#FF4B4B!important;color:#EA2B2B!important}[data-theme=duolingo] .option-btn.option-btn-reveal{background-color:rgba(88,204,2,.15)!important;border-color:#58CC02 #58CC02 #46a302!important;color:#58A700!important}.training-card-icon{color:var(--text-muted)}[data-theme=duolingo] .training-card-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:white}[data-theme=duolingo] .training-card-icon[data-group=hearing]{background-color:var(--color-blue,#1CB0F6)}[data-theme=duolingo] .training-card-icon[data-group=rhythm]{background-color:var(--color-yellow,#FFC800)}[data-theme=duolingo] .training-card-icon[data-group=singing]{background-color:var(--color-purple,#CE82FF)}[data-theme=duolingo] .training-card-icon[data-group=reading]{background-color:var(--btn-primary,#58CC02)}[data-theme=duolingo] .training-card-icon[data-group=tools]{background-color:var(--color-orange,#FF9600)}[data-theme=duolingo][data-module-group=hearing]{--btn-primary:#1CB0F6;--btn-primary-shade:#1899D6;--accent:#1CB0F6;--accent-light:rgba(28,176,246,0.12);--accent-color:#1CB0F6;--accent-dot:#1CB0F6}[data-theme=duolingo][data-module-group=rhythm]{--btn-primary:#FFC800;--btn-primary-shade:#E5B400;--btn-primary-text:#3C3C3C;--accent:#FFC800;--accent-light:rgba(255,200,0,0.12);--accent-color:#FFC800;--accent-dot:#FFC800}[data-theme=duolingo][data-module-group=singing]{--btn-primary:#CE82FF;--btn-primary-shade:#A568CC;--accent:#CE82FF;--accent-light:rgba(206,130,255,0.12);--accent-color:#CE82FF;--accent-dot:#CE82FF}[data-theme=duolingo][data-module-group=reading]{--btn-primary:#58CC02;--btn-primary-shade:#58A700;--accent:#58CC02;--accent-light:rgba(88,204,2,0.12);--accent-color:#58CC02;--accent-dot:#58CC02}[data-theme=duolingo][data-module-group=tools]{--btn-primary:#FF9600;--btn-primary-shade:#E08600;--accent:#FF9600;--accent-light:rgba(255,150,0,0.12);--accent-color:#FF9600;--accent-dot:#FF9600}[data-theme=duolingo] .stat-card{background-color:rgba(255,251,235,.6);border-color:rgba(120,53,15,.1)}[data-theme=duolingo] .level-btn{border-radius:12px;border-width:1px;border-style:solid;border-color:var(--border-color);font-weight:700}[data-theme=duolingo] .level-btn[data-selected=true]{border-color:var(--btn-primary);background-color:var(--accent-light,#D7FFB8);color:var(--btn-primary-shade,#2D7600)}.settings-card,.staff-card{box-shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.06)}.staff-card{border-radius:16px;border:1px solid var(--border-color);background-color:var(--bg-card,var(--bg-primary));overflow:hidden;display:flex;flex-direction:column;justify-content:center}[data-theme=duolingo] .staff-card{border-width:2px;border-bottom-width:var(--btn-3d-offset,5px);border-bottom-style:solid;border-color:var(--border-color);box-shadow:0 1px 3px rgba(0,0,0,.06)}[data-theme=duolingo] .settings-card{border-bottom:var(--btn-3d-offset,0) solid var(--border-color)!important}[data-theme=duolingo] .settings-card .segment-group{border-width:1px!important;padding:2px}[data-theme=duolingo] .settings-card .segment-item,[data-theme=duolingo] .settings-card .segment-item.btn-3d{border-bottom:1px solid transparent!important;box-shadow:none!important}[data-theme=duolingo] .settings-card .segment-item.btn-3d:active,[data-theme=duolingo] .settings-card .segment-item:active{transform:none!important;border-bottom:1px solid transparent!important}[data-theme=duolingo] .settings-card select{border-width:1px!important;border-color:var(--border-color)!important}[data-theme=duolingo] .settings-card .stepper-btn{border-width:1px!important;display:flex!important;align-items:center!important;justify-content:center!important;line-height:1!important}[data-theme=duolingo] .settings-card .stepper-btn:active{border-bottom-width:1px!important;transform:scale(.93)!important;background-color:var(--bg-elevated,rgba(0,0,0,.06))!important}[data-theme=duolingo] .settings-card .toggle-switch>div,[data-theme=duolingo] .settings-card .toggle-switch>span{border-bottom:none!important;box-shadow:0 1px 2px rgba(0,0,0,.1)!important}[data-theme=duolingo] .segment-group{border-radius:9999px;border-width:2px 2px 4px;border-color:var(--border-color);padding:3px;gap:2px}[data-theme=duolingo] .segment-item{border-radius:9999px;transition:all .15s}[data-theme=duolingo] .segment-item[data-active=true]{background-color:var(--btn-primary)!important;color:var(--btn-primary-text,#fff)!important;font-weight:700}[data-theme=duolingo] .segment-item[data-active=false]{background-color:transparent!important;font-weight:600}[data-theme=duolingo] select{border-radius:16px;border-width:2px 2px 4px;border-color:var(--border-color);border-bottom-color:var(--btn-secondary-shade);padding:12px 16px;font-weight:700;font-size:1rem}[data-theme=duolingo] .training-card{border-width:2px 2px 5px;border-color:var(--border-color);box-shadow:0 1px 3px rgba(0,0,0,.06);transition:all .15s}[data-theme=duolingo] .training-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1);transform:scale(1.02)}[data-theme=duolingo] .training-card:active{border-bottom-width:0;transform:translateY(4px)}[data-theme=duolingo] .result-card{border-width:2px 2px 6px;border-color:var(--border-color);border-radius:24px;box-shadow:0 4px 20px rgba(0,0,0,.08)}[data-theme=duolingo] .result-card h2{font-weight:900;font-size:1.5rem}[data-theme=duolingo] .toast-duo{border-radius:9999px!important;border:solid var(--border-color);border-width:2px 2px 3px;font-weight:700!important}[data-theme=duolingo] .progress-bar{height:14px;border-radius:9999px;background:#E5E5E5}[data-theme=duolingo] .progress-fill{border-radius:9999px;background:var(--btn-primary);position:relative}[data-theme=duolingo] .progress-fill:after{content:"";position:absolute;top:3px;left:8px;right:8px;height:4px;border-radius:9999px;background:rgba(255,255,255,.35)}[data-theme=duolingo] 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