/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial}}}@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.static{position:static}.isolate{isolation:isolate}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.block{display:block}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--fermata-navy:#1b2333;--fermata-secondary-blue:#31456a;--fermata-accent-blue:#7c9dff;--fermata-mint:#22d3b3;--fermata-light:#f4f6fa;--fermata-white:#fff;--fermata-text:#111827;--fermata-muted:#6b7280;--fermata-border:#31456a1f;--font-latin:"Manrope",Inter,Arial,sans-serif;--font-fa:"IRANYekanX","Vazirmatn",Tahoma,sans-serif;--container:1180px;--shadow-soft:0 24px 80px #1b233314;--shadow-card:0 16px 50px #1b23330f}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--fermata-light);direction:rtl;min-height:100%}html,body,#app{min-height:100%}body{color:var(--fermata-text);background:var(--fermata-light);font-family:var(--font-fa);-webkit-font-smoothing:antialiased;margin:0;overflow-x:hidden}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}img,svg{max-width:100%;display:block}button{border:0}.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}.button{cursor:pointer;border-radius:14px;justify-content:center;align-items:center;gap:9px;min-height:46px;padding:0 20px;font-weight:700;transition:transform .16s,box-shadow .16s;display:inline-flex}.button:hover{transform:translateY(-1px)}.button-primary{color:#fff;background:var(--fermata-navy);box-shadow:0 12px 28px #1b23332e}.button-secondary{color:var(--fermata-navy);border:1px solid var(--fermata-border);background:#ffffffc7}.button-quiet{color:var(--fermata-navy);background:0 0}.button-light{color:var(--fermata-navy);background:#fff}.button-large{min-height:54px;padding-inline:24px}.button img{width:19px;height:19px}.site-header{padding:22px 0}.header-inner,.header-actions,.footer-inner,.app-shell-header-inner{align-items:center;display:flex}.header-inner,.footer-inner,.app-shell-header-inner{justify-content:space-between}.header-actions{gap:8px}.brand-link{width:152px}.hero{padding:68px 0 110px;position:relative;overflow:hidden}.hero:before,.hero:after{content:"";pointer-events:none;border-radius:50%;position:absolute}.hero:before{background:radial-gradient(circle,#7c9dff33,#0000 70%);width:540px;height:540px;top:-180px;left:-180px}.hero:after{background:radial-gradient(circle,#22d3b321,#0000 70%);width:430px;height:430px;bottom:-140px;right:-200px}.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:center;gap:70px;display:grid;position:relative}.eyebrow{width:fit-content;color:var(--fermata-secondary-blue);background:#ffffffb3;border:1px solid #7c9dff3b;border-radius:999px;align-items:center;gap:9px;margin-bottom:24px;padding:8px 12px;font-size:.83rem;font-weight:700;display:flex}.eyebrow img{width:18px;height:18px}.hero h1{max-width:680px;color:var(--fermata-navy);letter-spacing:-.055em;margin:0;font-size:clamp(3.15rem,6vw,6.2rem);font-weight:850;line-height:1.05}.hero h1 span{color:var(--fermata-secondary-blue)}.hero-lead{max-width:650px;color:var(--fermata-muted);margin:30px 0 0;font-size:1.08rem;line-height:2.05}.hero-actions{flex-wrap:wrap;gap:12px;margin-top:34px;display:flex}.install-message{color:var(--fermata-secondary-blue)}.hero-notes{color:var(--fermata-muted);flex-wrap:wrap;gap:9px;margin-top:25px;font-size:.82rem;display:flex}.app-preview{border:1px solid var(--fermata-border);width:min(100%,455px);box-shadow:var(--shadow-soft);background:#fff;border-radius:34px;margin-inline:auto;padding:19px}.app-preview-top{grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding-bottom:18px;display:grid}.preview-mark{width:45px;height:45px}.app-preview-top strong{color:var(--fermata-navy);display:block}.app-preview-top span{color:var(--fermata-muted);font-size:.76rem}.preview-status{color:#106a5a;background:#22d3b31f;border-radius:999px;padding:7px 10px;font-size:.75rem;font-weight:800}.note-card{color:#fff;background:linear-gradient(150deg,#1b2333,#31456a);border-radius:25px;padding:25px}.note-card-label{color:#dce5ff;background:#7c9dff21;border-radius:999px;width:fit-content;padding:6px 9px;font-size:.72rem}.staff{flex-direction:column;justify-content:center;gap:13px;height:116px;margin:22px 0 17px;display:flex;position:relative}.staff span{background:#ffffff52;height:1px}.note-symbol{color:var(--fermata-accent-blue);inset-inline-start:53%;font-size:3.45rem;position:absolute;top:29px}.note-card p{color:#ffffffb3;line-height:1.9}.note-card-footer{border-top:1px solid #ffffff1f;justify-content:space-between;margin-top:20px;padding-top:16px;font-size:.72rem;display:flex}.mini-tools{grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px;display:grid}.mini-tools>div{border:1px solid var(--fermata-border);background:#fff;border-radius:18px;align-content:center;place-items:center;gap:8px;min-height:84px;font-size:.74rem;font-weight:700;display:grid}.mini-tools img{width:22px;height:22px}.features-section{background:#fff;padding:96px 0}.section-heading{max-width:700px}.section-heading>span,.section-kicker{color:var(--fermata-secondary-blue);font-size:.82rem;font-weight:800}.section-heading h2,.principles-grid h2{color:var(--fermata-navy);margin:12px 0 0;font-size:clamp(2rem,4vw,3.55rem);line-height:1.25}.section-heading p{color:var(--fermata-muted);line-height:2}.feature-grid{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:46px;display:grid}.feature-card,.app-tool-card{border:1px solid var(--fermata-border);background:#fbfcfe;border-radius:23px;grid-template-columns:auto 1fr;gap:18px;padding:24px;display:grid}.feature-card:first-child,.app-tool-card-primary{background:linear-gradient(145deg,#7c9dff1f,#fff)}.feature-icon,.app-tool-icon{background:#7c9dff1f;border-radius:15px;place-items:center;width:48px;height:48px;display:grid}.feature-icon img,.app-tool-icon img{width:23px;height:23px}.feature-title-row,.app-tool-title{justify-content:space-between;align-items:center;gap:12px;display:flex}.feature-title-row h3,.app-tool-title h3{color:var(--fermata-navy);margin:0}.feature-title-row span,.app-tool-title span{color:var(--fermata-secondary-blue);background:#7c9dff1f;border-radius:999px;padding:5px 8px;font-size:.65rem;font-weight:800}.feature-copy p,.app-tool-card p{color:var(--fermata-muted);line-height:1.9}.principles-section{padding:104px 0}.principles-grid{grid-template-columns:.85fr 1.15fr;gap:80px;display:grid}.principle-list{gap:12px;display:grid}.principle-list article{border:1px solid var(--fermata-border);background:#ffffff9e;border-radius:20px;padding:22px 24px}.principle-list p{color:var(--fermata-muted)}.final-cta{padding:0 0 100px}.final-cta-card{color:#fff;background:linear-gradient(135deg,#1b2333,#31456a);border-radius:28px;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;padding:34px;display:grid}.final-cta-card>img{width:62px}.app-shell-page{background:linear-gradient(#f8fafd,#f4f6fa);min-height:100vh}.app-shell-container{width:min(100% - 36px,980px);margin-inline:auto}.app-shell-header{padding:18px 0}.app-shell-brand{width:142px}.app-shell-badge{border:1px solid var(--fermata-border);color:var(--fermata-secondary-blue);background:#fff;border-radius:999px;padding:7px 10px;font-size:.7rem;font-weight:800}.app-shell-main{padding:44px 0 80px}.app-welcome{border:1px solid var(--fermata-border);box-shadow:var(--shadow-card);background:#fff;border-radius:28px;grid-template-columns:1fr auto;align-items:center;gap:30px;padding:30px;display:grid}.app-welcome h1{color:var(--fermata-navy);font-size:clamp(2rem,4vw,3.4rem)}.app-welcome p{color:var(--fermata-muted);line-height:2}.app-welcome-mark{width:86px}.app-tools{margin-top:40px}.app-tool-grid{grid-template-columns:repeat(2,1fr);gap:13px;display:grid}@media (width<=900px){.hero-grid{grid-template-columns:1fr;gap:55px}.hero-copy{text-align:center}.eyebrow,.hero h1,.hero-lead{margin-inline:auto}.hero-actions,.hero-notes{justify-content:center}.principles-grid{grid-template-columns:1fr;gap:35px}}@media (width<=720px){.container{width:min(calc(100% - 28px),var(--container))}.brand-link{width:128px}.install-header{display:none}.hero{padding:45px 0 76px}.hero h1{font-size:clamp(3rem,15vw,4.5rem)}.hero-actions,.feature-grid,.app-tool-grid{grid-template-columns:1fr;display:grid}.hero-actions .button{width:100%}.features-section,.principles-section{padding:76px 0}.final-cta-card{text-align:center;grid-template-columns:1fr;justify-items:center}.app-welcome{grid-template-columns:1fr}.app-welcome-mark{grid-row:1;width:68px}}@media (width<=430px){.hero h1{font-size:3.2rem}.feature-card,.app-tool-card{grid-template-columns:1fr}.note-card-footer{flex-direction:column;gap:5px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}html.fermata-onboarding-open,html.fermata-onboarding-open body{overflow:hidden}.onboarding-overlay{z-index:1000;isolation:isolate;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.onboarding-backdrop{z-index:-1;-webkit-backdrop-filter:blur(18px);background:linear-gradient(145deg,#1b2333c7,#31456aad);position:absolute;inset:0}.onboarding-panel{overscroll-behavior:contain;background:#fff;border:1px solid #31456a1f;border-radius:28px;outline:none;width:min(100%,720px);max-height:min(820px,100dvh - 48px);overflow-y:auto;box-shadow:0 32px 90px #11182747,0 8px 28px #1118271f}.onboarding-header{justify-content:space-between;align-items:center;gap:20px;padding:24px 28px 18px;display:flex}.onboarding-brand{color:#1b2333;letter-spacing:.14em;align-items:center;gap:10px;font-family:Manrope,IRANYekanX,Tahoma,sans-serif;font-size:13px;font-weight:800;display:inline-flex}.onboarding-brand img{object-fit:contain;width:31px;height:31px}.onboarding-skip{color:#6b7280;cursor:pointer;background:0 0;border-radius:10px;padding:9px 12px;font-size:13px;font-weight:700;transition:background .16s,color .16s}.onboarding-skip:hover{color:#1b2333;background:#f4f6fa}.onboarding-skip:disabled{cursor:not-allowed;opacity:.55}.onboarding-progress{grid-template-columns:repeat(4,1fr);gap:7px;padding:0 28px;display:grid}.onboarding-progress span{background:#e7ebf2;border-radius:999px;height:4px;transition:background .18s}.onboarding-progress span.active{background:#7c9dff}.onboarding-stage{padding:42px 48px 46px}.onboarding-kicker{color:#31456a;margin-bottom:13px;font-size:13px;font-weight:800;display:inline-flex}.onboarding-stage h2{color:#111827;letter-spacing:-.035em;max-width:550px;margin:0;font-size:clamp(30px,4vw,44px);font-weight:850;line-height:1.28}.onboarding-stage>p{color:#6b7280;max-width:560px;margin:16px 0 0;font-size:15px;line-height:2}.onboarding-intro-points{grid-template-columns:repeat(3,1fr);gap:12px;margin-top:32px;display:grid}.onboarding-intro-points>div{background:#f4f6fa;border:1px solid #31456a14;border-radius:18px;min-height:116px;padding:18px}.onboarding-intro-points strong,.onboarding-intro-points span{display:block}.onboarding-intro-points strong{color:#1b2333;font-size:14px}.onboarding-intro-points span{color:#6b7280;margin-top:7px;font-size:12px;line-height:1.8}.onboarding-choice-grid{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:30px;display:grid}.onboarding-choice,.onboarding-level{color:#1b2333;cursor:pointer;text-align:right;background:#fff;border:1.5px solid #e3e8f0;width:100%;transition:border-color .16s,background .16s,box-shadow .16s,transform .16s}.onboarding-choice{border-radius:20px;min-height:182px;padding:24px}.onboarding-choice:hover,.onboarding-level:hover{border-color:#7c9dffb8;transform:translateY(-1px)}.onboarding-choice.selected,.onboarding-level.selected{background:#7c9dff14;border-color:#7c9dff;box-shadow:0 0 0 3px #7c9dff1c}.onboarding-choice-mark{color:#31456a;letter-spacing:-.03em;margin-bottom:27px;font-size:24px;font-weight:850;display:block}.onboarding-choice strong,.onboarding-choice small{display:block}.onboarding-choice strong{font-size:15px}.onboarding-choice small{color:#6b7280;margin-top:6px;font-size:12px}.onboarding-level-list{gap:10px;margin-top:30px;display:grid}.onboarding-level{border-radius:16px;gap:5px;padding:18px 20px;display:grid}.onboarding-level strong{font-size:14px}.onboarding-level span{color:#6b7280;font-size:12px;line-height:1.7}.onboarding-summary{grid-template-columns:repeat(2,1fr);gap:12px;margin-top:30px;display:grid}.onboarding-summary>div{background:#f4f6fa;border:1px solid #31456a14;border-radius:17px;padding:20px}.onboarding-summary span,.onboarding-summary strong{display:block}.onboarding-summary span{color:#6b7280;font-size:12px}.onboarding-summary strong{color:#1b2333;margin-top:8px;font-size:16px}.onboarding-actions{justify-content:flex-end;gap:10px;margin-top:34px;display:flex}.onboarding-actions-split{justify-content:space-between}.onboarding-error{background:#fff5f5;border:1px solid #fed7d7;border-radius:12px;padding:12px 14px;color:#9b2c2c!important;font-size:12px!important;line-height:1.8!important}.onboarding-panel button:focus-visible{outline-offset:2px;outline:3px solid #7c9dff61}@media (width<=720px){.onboarding-overlay{align-items:end;padding:0}.onboarding-panel{border-bottom:0;border-left:0;border-right:0;border-radius:26px 26px 0 0;width:100%;max-height:94dvh}.onboarding-header{padding:20px 20px 15px}.onboarding-progress{padding:0 20px}.onboarding-stage{padding:32px 20px 30px}.onboarding-stage h2{font-size:clamp(28px,9vw,37px)}.onboarding-intro-points{grid-template-columns:1fr}.onboarding-intro-points>div{min-height:0}.onboarding-choice-grid{grid-template-columns:1fr}.onboarding-choice{min-height:145px}.onboarding-summary{grid-template-columns:1fr}.onboarding-actions-split{align-items:stretch}}@media (width<=460px){.onboarding-brand span{display:none}.onboarding-stage{padding-top:27px}.onboarding-actions,.onboarding-actions-split{flex-direction:column-reverse}.onboarding-actions .button{justify-content:center;width:100%}}@media (prefers-reduced-motion:reduce){.onboarding-choice,.onboarding-level,.onboarding-progress span,.onboarding-skip{transition:none}}.note-practice-shell{outline:none;width:100%;max-width:1080px;margin:0 auto}.note-practice-header{justify-content:space-between;align-items:flex-start;gap:32px;margin-bottom:24px;display:flex}.note-practice-back{color:#31456a;font:inherit;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;margin:0 0 24px;padding:0;font-weight:700;display:inline-flex}.note-practice-back>span:first-child{font-size:1.2rem}.note-practice-title h1{color:#111827;letter-spacing:-.035em;margin:7px 0 0;font-size:clamp(1.8rem,4vw,3rem);line-height:1.15}.note-practice-mode{background:#fff;border:1px solid #31456a1f;border-radius:18px;flex:none;gap:6px;min-width:170px;padding:14px 18px;display:grid;box-shadow:0 14px 34px #1b23330f}.note-practice-mode span{color:#6b7280;font-size:.78rem;font-weight:700}.note-practice-mode strong{color:#1b2333;direction:ltr;font-size:.96rem}.note-practice-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:18px;display:grid}.note-practice-stats>div{background:#ffffffc7;border:1px solid #31456a1a;border-radius:16px;justify-content:space-between;align-items:center;gap:12px;min-height:64px;padding:12px 16px;display:flex}.note-practice-stats span{color:#6b7280;font-size:.82rem;font-weight:700}.note-practice-stats strong{color:#1b2333;font-size:1.1rem}.note-practice-stage{background:radial-gradient(circle at 50% 0,#7c9dff1a,#0000 44%),#fff;border:1px solid #31456a1f;border-radius:28px;padding:clamp(20px,4vw,36px);overflow:hidden;box-shadow:0 24px 70px #1b233314}.note-practice-question{justify-content:space-between;align-items:center;gap:20px;margin-bottom:12px;display:flex}.note-practice-question span{color:#6b7280;font-size:.8rem;font-weight:700}.note-practice-question strong{color:#31456a;font-size:.86rem}.note-staff-frame{background:#f9fafc;border-radius:22px;place-items:center;width:100%;min-height:250px;transition:background-color .18s,box-shadow .18s;display:grid}.note-staff-svg{width:min(100%,760px);height:auto;display:block}.note-staff-lines line,.note-staff-ledgers line{stroke:#31456a;stroke-width:2.2px;stroke-linecap:round}.note-staff-clef{fill:#1b2333;font-family:Noto Music,Segoe UI Symbol,Apple Symbols,serif;font-size:122px}.note-staff-head{fill:#1b2333;transition:fill .16s}.note-staff-stem{stroke:#1b2333;stroke-width:4px;stroke-linecap:round;transition:stroke .16s}.note-staff-feedback-correct{background:#22d3b312}.note-staff-feedback-correct .note-staff-head{fill:#168d78}.note-staff-feedback-correct .note-staff-stem{stroke:#168d78}.note-staff-feedback-incorrect{background:#7c9dff14}.note-practice-hint{color:#6b7280;text-align:center;margin:14px 0 0;font-size:.82rem;line-height:1.8}.note-answer-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:10px;margin-top:18px;display:grid}.note-answer-button{color:#1b2333;min-height:76px;font:inherit;cursor:pointer;background:#fff;border:1px solid #31456a24;border-radius:18px;padding:14px 8px;transition:transform .15s,border-color .15s,background-color .15s,box-shadow .15s;position:relative}.note-answer-button:hover:not(:disabled){border-color:#7c9dffb3;transform:translateY(-2px);box-shadow:0 12px 30px #1b233314}.note-answer-button:focus-visible,.note-practice-back:focus-visible,.note-feedback-card button:focus-visible,.note-practice-error button:focus-visible{outline-offset:3px;outline:3px solid #7c9dff6b}.note-answer-button:disabled{cursor:default}.note-answer-button strong{direction:ltr;font-size:1.05rem;display:block}.note-answer-key{color:#6b7280;background:#f4f6fa;border-radius:6px;place-items:center;width:19px;height:19px;font-size:.66rem;font-weight:800;display:grid;position:absolute;top:7px;left:8px}.note-answer-selected{border-color:#7c9dff}.note-answer-correct{background:#22d3b31a;border-color:#22d3b3b8}.note-answer-incorrect{background:#7c9dff1a;border-color:#7c9dffb8}.note-feedback-area{min-height:104px;margin-top:16px}.note-feedback-placeholder{color:#6b7280;text-align:center;margin:0;padding:18px 0;font-size:.82rem}.note-feedback-card{border-radius:20px;justify-content:space-between;align-items:center;gap:20px;min-height:88px;padding:16px 20px;display:flex}.note-feedback-card>div{gap:3px;display:grid}.note-feedback-card span{font-size:.78rem;font-weight:700}.note-feedback-card strong{direction:ltr;font-size:1.25rem}.note-feedback-card-correct{color:#126c5d;background:#22d3b31f}.note-feedback-card-incorrect{color:#31456a;background:#7c9dff1f}.note-feedback-card button,.note-practice-error button{color:#fff;min-height:44px;font:inherit;cursor:pointer;background:#1b2333;border:0;border-radius:13px;padding:0 20px;font-weight:800}.note-practice-loading,.note-practice-error{text-align:center;background:#fff;border:1px solid #31456a1f;border-radius:28px;align-content:center;place-items:center;gap:16px;min-height:360px;padding:32px;display:grid}.note-practice-loading p,.note-practice-error p{color:#6b7280;max-width:480px;margin:0;line-height:1.8}.note-practice-loader{border:3px solid #31456a1f;border-top-color:#7c9dff;border-radius:999px;width:34px;height:34px;animation:.7s linear infinite fermata-note-loader}@keyframes fermata-note-loader{to{transform:rotate(360deg)}}@media (width<=760px){.note-practice-header{gap:16px;display:grid}.note-practice-mode{grid-template-columns:1fr auto;align-items:center;width:100%}.note-practice-stats{gap:8px}.note-practice-stats>div{text-align:center;justify-items:center;gap:3px;min-height:66px;padding:9px;display:grid}.note-practice-stage{border-radius:22px;padding:16px 12px 18px}.note-staff-frame{min-height:210px}.note-answer-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.note-answer-button{border-radius:15px;min-height:68px}}@media (width<=460px){.note-practice-title h1{font-size:1.7rem}.note-practice-question{align-items:flex-start}.note-answer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.note-feedback-card{flex-direction:column;align-items:stretch}.note-feedback-card button{width:100%}}@media (prefers-reduced-motion:reduce){.note-answer-button,.note-staff-frame,.note-staff-head,.note-staff-stem{transition:none}.note-practice-loader{animation:none}}.app-tool-button{appearance:none;width:100%;color:inherit;font:inherit;text-align:right;margin:0}.app-tool-button:not(:disabled){cursor:pointer}.app-tool-button:not(:disabled):hover{border-color:#7c9dff6b;transform:translateY(-2px);box-shadow:0 18px 42px #1b233317}.app-tool-button:not(:disabled):focus-visible{outline-offset:4px;outline:3px solid #7c9dff6b}.app-tool-button:disabled{cursor:default}.app-tool-button:not(.app-tool-card-primary):disabled{opacity:.82}.app-tool-card-primary:disabled{opacity:.72}.app-tool-readiness{color:#6b7280;margin-top:10px;font-size:.76rem;font-weight:700;display:inline-block}.app-tool-readiness-error{color:#31456a}@media (prefers-reduced-motion:reduce){.app-tool-button{transition:none}.app-tool-button:not(:disabled):hover{transform:none}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}