:root{--paper:#f5f3eb;--ink:#262c29;--muted:#68716a;--line:#d9ddd2;--lime:#d8f38b;--dark:#27372f;--white:#fffef9;--orange:#ba5838;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;scroll-behavior:smooth}
*{box-sizing:border-box}
body{margin:0}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea{touch-action:manipulation}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.55}
a{color:inherit}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #bd653b;outline-offset:4px}
[hidden]{display:none!important}
.wrap{width:min(1140px,calc(100% - 64px));margin-inline:auto}
.site-header{min-height:100px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}
.brand{font-size:25px;letter-spacing:-1px;font-weight:800;text-decoration:none;display:inline-flex;align-items:center;gap:7px}
.brand-dot{color:var(--orange);margin-left:-6px}
.brand-icon{display:grid;place-items:center;background:var(--dark);color:var(--lime);border-radius:10px;width:35px;height:35px;font-size:35px;line-height:1;margin-right:5px}
nav{display:flex;align-items:center;gap:28px;font-size:13px;font-weight:600}
nav a{text-decoration:none;padding-block:14px}
.free-pill{padding:9px 13px;border:1px solid var(--line);border-radius:100px;font-size:11px;color:var(--muted)}
.intro{display:flex;align-items:center;justify-content:space-between;gap:35px;padding:58px 0 44px}
.eyebrow{font-size:10px;font-weight:700;letter-spacing:1.6px;margin:0 0 17px}
.eyebrow>span{display:inline-block;width:7px;height:7px;background:#789b58;border-radius:50%;margin-right:7px}
h1{font-size:clamp(40px,5.3vw,66px);line-height:1.05;letter-spacing:-3px;font-weight:650;margin:0}
h1 em{font-family:Georgia,serif;font-weight:400;color:#68815a}
h2{font-size:21px;line-height:1.3;letter-spacing:-.65px;margin:0}
h3{font-size:18px;letter-spacing:-.3px}
.intro-copy{font-size:14px;line-height:1.85;color:var(--muted);margin:20px 0 0}
.quick-note{border-left:1px solid #cdd4c4;padding:8px 0 8px 34px;min-width:252px;margin-right:18px;transform:rotate(-3deg)}
.note-number{font-family:Georgia,serif;font-size:39px;color:#789369;letter-spacing:-2px}
.quick-note p{font-family:Georgia,serif;font-size:23px;line-height:1.35}
.quick-note>span:last-child{font-size:8px;letter-spacing:1.5px;font-weight:700}
.panel{border:1px solid var(--line);border-radius:22px;background:var(--white)}
.practice-layout{display:grid;grid-template-columns:1.42fr 1fr;gap:22px;scroll-margin-top:20px}
.chord-panel{padding:28px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}
.section-heading .eyebrow{margin-bottom:10px}
.chord-panel h2{font-size:17px}
.outline-pill{font-size:9px;white-space:nowrap;color:var(--muted);border:1px solid var(--line);padding:7px 9px;border-radius:20px}
.pair-picker{display:grid;grid-template-columns:1fr 36px 1fr;gap:8px;align-items:end;margin-top:25px}
.pair-arrow{font-size:25px;color:var(--muted);text-align:center;padding-bottom:10px}
label{display:block;font-size:11px;font-weight:650;margin-bottom:8px}
input[type=number],select,textarea{min-width:0;width:100%;border:1px solid var(--line);border-radius:9px;color:var(--ink);background:#fffefb;padding:12px;font-size:15px;min-height:46px}
select{font-weight:650}
textarea{resize:vertical}
.diagrams{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:16px}
.chord-card{padding:17px 12px 10px;border-radius:14px;background:#f0f2e9;text-align:center}
.chord-card.second{background:#f4efe6}
.chord-title{display:flex;justify-content:space-between;align-items:center;margin:0 4px}
.chord-title strong{font-family:Georgia,serif;font-size:30px;font-weight:400}
.chord-title span{font-size:10px;color:var(--muted)}
.chord-card svg{display:block;width:100%;max-width:180px;height:auto;margin:0 auto}
.diagram-key{font-size:10px;color:var(--muted);display:flex;justify-content:center;gap:6px;align-items:center;flex-wrap:wrap;margin:18px 0 9px}
.diagram-key b{font-size:13px;color:var(--ink);margin-left:8px}
.diagram-note{font-size:10px;text-align:center;color:var(--muted);line-height:1.6;margin:0 auto;max-width:350px}
.how-to{margin-top:20px;border-top:1px solid var(--line);font-size:12px;line-height:1.7}
.how-to summary{cursor:pointer;padding:14px 0 2px;font-weight:650;min-height:44px}
.how-to p{color:var(--muted)}
.timer-panel{background:var(--dark);border-color:var(--dark);color:#f8fbf4;padding:29px}
.timer-panel .eyebrow{color:#bed0bd;font-size:9px}
.timer-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:27px}
.timer-tag{background:#ffffff12;padding:7px 13px;border:1px solid #ffffff20;border-radius:20px;font-size:13px}
#timer-state{font-size:11px;color:#c3cfbf}
.clock{text-align:center;font-size:clamp(70px,8.7vw,112px);font-weight:400;line-height:1.35;letter-spacing:-6px;font-variant-numeric:tabular-nums;margin:11px 0}
.time-track{height:4px;background:#ffffff20;overflow:hidden;border-radius:10px}
#time-fill{display:block;background:var(--lime);width:100%;height:100%;transition:width .1s linear}
.beat-line{display:flex;align-items:center;justify-content:center;font-size:10px;gap:9px;color:#c1cebb;margin:18px 0 28px}
#beat-dot{width:7px;height:7px;border-radius:50%;background:#6c8367}
#beat-dot.on{background:var(--lime);box-shadow:0 0 0 4px #d8f38b15}
fieldset{border:0;margin:0;padding:0;min-width:0}
.setting-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.setting-grid label{display:flex;justify-content:space-between;color:#eff4eb;font-size:11px}
.setting-grid label span{color:#bdcbbb;font-size:9px;font-weight:400}
.timer-panel input[type=number]{background:#ffffff09;border:1px solid #ffffff25;color:#fff;font-size:19px;font-weight:550;min-height:49px}
.timer-meta{display:flex;align-items:center;justify-content:space-between;gap:5px;margin:11px 0 14px}
.sound-label{display:flex;align-items:center;gap:7px;min-height:44px;margin:0;color:#d0dbcc;font-size:11px}
input[type=checkbox]{accent-color:var(--lime);height:18px;width:18px;margin:0}
.text-button{background:none;border:0;color:#d3e0c8;font-size:11px;text-decoration:underline;text-underline-offset:3px;min-height:44px;padding:8px 0}
.primary{display:flex;align-items:center;justify-content:space-between;gap:16px;border:0;border-radius:10px;padding:15px 19px;background:var(--lime);color:#263526;font-weight:700;min-height:50px;font-size:13px}
.primary:hover{background:#c9e67a}
.primary span{font-size:22px;line-height:15px}
#start,#stop{width:100%}
.stop-button{border:1px solid #dae5d2;border-radius:10px;min-height:50px;background:#fffefb;color:var(--dark);font-weight:700;font-size:13px}
.session-status{font-size:11px;color:#d0dbcc;text-align:center;line-height:1.7;margin:14px 0 0}
.background-note{font-size:10px;color:#b5c4b0;text-align:center;line-height:1.6;margin:10px 0 0}
.form-error{color:#ffceaf;font-size:12px;line-height:1.6}
.error{color:#a52e21;font-size:12px}
.result-panel{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;padding:27px;margin-top:22px;background:#e8efd9}
.result-panel p{font-size:12px;line-height:1.6}
.score-controls{display:flex;gap:10px}
.score-controls input{max-width:150px}
.score-controls .primary{background:var(--dark);color:#fff;white-space:nowrap}
.dark-text{color:var(--muted)}
.progress-section{margin-top:52px;scroll-margin-top:20px}
.secondary{background:transparent;border:1px solid #bec6b6;border-radius:8px;padding:11px 15px;min-height:44px;font-weight:650;font-size:11px;color:var(--ink)}
.secondary:hover{background:#eaf0dd}
.muted{font-size:11px;line-height:1.7;color:var(--muted)}
#comparison-label{margin:18px 0}
.stats{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);border-radius:16px;padding:23px 0;background:#fffef95c}
.stat{padding:0 25px;display:flex;flex-direction:column;gap:9px}
.stat:not(:last-child){border-right:1px solid var(--line)}
.stat span{font-size:11px;color:var(--muted)}
.stat strong{font-size:31px;letter-spacing:-1px;font-weight:500;font-variant-numeric:tabular-nums}
.empty-state{text-align:center;border:1px dashed #ccd2c2;border-radius:16px;margin-top:18px;padding:25px}
.empty-state>span{font-size:25px;color:#719354}
.empty-state h3{margin:10px 0}
.empty-state p{font-size:12px;line-height:1.8;color:var(--muted);margin:0}
.history-wrap{overflow-x:auto;margin-top:18px;border:1px solid var(--line);border-radius:14px}
table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}
th{font-size:10px;color:var(--muted);font-weight:600;background:#eceee3;padding:14px}
td{padding:14px;line-height:1.6;border-top:1px solid var(--line)}
td small{display:block;font-size:10px;color:var(--muted)}
td strong{font-size:17px}
.complete-label{color:#4b6d37}
.partial-label{color:#936241}
.history-footnote{margin-top:13px;max-width:720px}
.feedback-panel{margin-top:40px;padding:28px;display:grid;grid-template-columns:1fr 1fr;gap:40px;background:#efeee4}
.feedback-panel p{font-size:12px;line-height:1.7;color:var(--muted);max-width:330px}
.feedback-panel form{display:grid;gap:8px}
.feedback-panel label{margin:0}
.feedback-panel textarea{font-size:12px}
.feedback-panel .secondary{justify-self:start}
.feedback-panel #feedback-status:empty{display:none}
.feedback-panel #feedback-status{margin:0}
footer{display:flex;justify-content:space-between;gap:35px;padding:39px 0 30px;border-top:1px solid var(--line);margin-top:45px!important}
footer .brand{font-size:20px}
footer p{font-size:11px;color:var(--muted);line-height:1.8}
.privacy{max-width:490px}
.privacy p{margin:0}
footer .text-button{font-size:10px}
.notice{background:#fff0d2;border:1px solid #ddba74;border-radius:12px;padding:15px;font-size:13px;line-height:1.6}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;top:-60px;left:20px;padding:12px;z-index:10;background:var(--white)}
.skip:focus{top:10px}
@media(max-width:850px){.wrap{width:calc(100% - 40px)}
.practice-layout{grid-template-columns:1.15fr 1fr;gap:15px}
.chord-panel,.timer-panel{padding:22px}
.outline-pill{display:none}
.quick-note{margin-right:0;min-width:220px}
.intro{padding-top:40px}
.timer-panel .eyebrow{letter-spacing:1px;font-size:8px}
.result-panel{gap:20px}
.score-controls{flex-wrap:wrap}
.diagrams{gap:10px}
.chord-card{padding-inline:7px}
}
@media(max-width:650px){.wrap{width:calc(100% - 32px)}
.site-header{min-height:79px}
.brand{font-size:23px}
nav{gap:0;font-size:11px}
.free-pill{display:none}
.intro{padding:34px 0 29px}
.quick-note{display:none}
h1{font-size:48px;letter-spacing:-2px}
.intro-copy{font-size:12px}
.eyebrow{font-size:8px;letter-spacing:1.2px}
.practice-layout{grid-template-columns:1fr}
.chord-panel,.timer-panel{padding:23px}
.chord-panel h2{font-size:18px}
.chord-card svg{max-width:150px}
.timer-panel .eyebrow{font-size:9px}
.timer-top{margin-top:17px}
.clock{font-size:95px;line-height:1.2;margin:14px 0}
.beat-line{margin:17px 0 23px}
.timer-panel{padding-bottom:21px}
.result-panel{grid-template-columns:1fr;gap:15px;padding:22px}
.score-controls{flex-wrap:nowrap}
.score-controls input{flex:1;max-width:none}
.progress-section{margin-top:35px}
.progress-section .section-heading{align-items:flex-start}
.section-heading h2{font-size:20px}
.secondary{padding:10px 12px;font-size:10px}
.stat{padding:0 13px}
.stat span{font-size:9px}
.stat strong{font-size:27px}
.stats{padding:20px 0}
.empty-state p{font-size:11px}
.feedback-panel{grid-template-columns:1fr;gap:18px;padding:22px;margin-top:30px}
footer{flex-direction:column;gap:12px;margin-top:30px!important;padding-top:28px}
th,td{padding:11px 9px}
th{font-size:9px}
table{font-size:11px}
.history-footnote{font-size:10px}
}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}
#time-fill{transition:none}
}

/* Static guides reuse the app's colors, cards, diagrams and controls. */
.site-header nav{column-gap:20px}
.learn-section{margin-top:40px;scroll-margin-top:20px}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}
.guide-card{display:flex;flex-direction:column;padding:23px;text-decoration:none;min-width:0}
.guide-card .eyebrow{font-size:9px;margin:0}
.guide-card h3{line-height:1.4;margin:12px 0 8px}
.guide-card p{color:var(--muted);font-size:12px;line-height:1.8;margin:0 0 18px}
.guide-card>span:last-child{font-size:11px;font-weight:650;margin-top:auto}
.guide-card:hover{border-color:#879b77;background:#f2f5e8}
.guide-main{max-width:800px;margin:0 auto;padding:44px 0 0}
.guide-main .breadcrumb{font-size:12px;color:var(--muted);margin:0 0 25px}
.guide-main h1{font-size:clamp(36px,5vw,54px);line-height:1.13;letter-spacing:-2px}
.guide-main .lead{font-size:18px;line-height:1.7;color:#566451;margin:23px 0 28px}
.guide-content{font-size:16px;line-height:1.85}
.guide-content h2{font-size:25px;line-height:1.35;margin:34px 0 14px}
.guide-content h3{font-size:19px;line-height:1.5;margin:24px 0 10px}
.guide-content p{margin:12px 0}
.guide-content li{padding-left:4px;margin:10px 0}
.guide-content ul,.guide-content ol{padding-left:24px}
.guide-content a{text-underline-offset:3px}
.guide-content .diagrams{max-width:480px;margin:23px auto}
.guide-content .chord-card{padding:18px}
.guide-content .diagram-note{font-size:12px;max-width:500px}
.practice-cta{padding:24px;background:#e8efd9;margin:30px 0;border-radius:16px;border:1px solid #d2ddc2}
.practice-cta p{font-size:14px;line-height:1.75;margin:0 0 17px}
.practice-cta .primary{display:inline-flex;text-decoration:none;min-height:48px}
.related-guides{margin-top:35px;border-top:1px solid var(--line);padding-top:20px}
.related-guides h2{font-size:20px}
.related-guides a{display:block;padding:10px 0;font-size:14px;min-height:44px}
.finger-table{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:22px 0}
.finger-table table{font-size:14px;background:var(--white)}
.finger-table th{font-size:12px}
.contact-address{overflow-wrap:anywhere}
.article-footer{max-width:800px}
@media(max-width:650px){.site-header nav{column-gap:14px}.guide-grid{grid-template-columns:1fr}.guide-card{padding:20px}.guide-main{padding-top:30px}.guide-main h1{font-size:38px}.guide-main .lead{font-size:16px}.guide-content{font-size:15px}.guide-content h2{font-size:22px}.practice-cta{padding:20px}.guide-content .chord-card{padding:14px 8px}}