/* SPDX-License-Identifier: AGPL-3.0-or-later */
:root{--paper:#f7f5ec;--ink:#202f29;--green:#234d40;--muted:#56655b;--line:#d6dbcf;--accent:#b45533;--warm:#e9b494;--white:#fffef8;--serif:Georgia,'Times New Roman',serif;--sans:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color-scheme:light;font-family:var(--sans);color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px;border-radius:3px}.wrap{width:min(1220px,calc(100% - 88px));margin-inline:auto}.skip{position:fixed;left:18px;top:-100px;z-index:9;background:var(--ink);color:white;padding:12px}.skip:focus{top:12px}.site-header{height:105px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:30px}.wordmark{display:inline-flex;align-items:center;gap:6px;text-decoration:none;white-space:nowrap}.wordmark span{font-family:var(--serif);font-size:35px;font-weight:600;letter-spacing:-1.8px}.site-header nav{display:flex;align-items:center;gap:30px;font-size:14px}.site-header nav>a:not(.button){text-decoration:none}.site-header nav>a:hover{text-decoration:underline}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;min-height:46px;border:1px solid var(--green);border-radius:7px;padding:12px 20px;text-decoration:none;font-size:14px;font-weight:600;transition:background .16s,transform .16s}.button:hover{transform:translateY(-2px);background:#e8ebdf}.button.small{min-height:38px;padding:9px 15px}.button.primary{background:var(--green);color:var(--paper)}.button.primary:hover{background:#153c30}.button.light{background:var(--paper);color:var(--green);border-color:var(--paper)}h1,h2,h3,p{margin-top:0}h1,h2{font-family:var(--serif);font-weight:400;letter-spacing:-2px}h1{font-size:clamp(46px,5.1vw,70px);line-height:1.02;margin-bottom:25px}h1 em{font-weight:400;color:var(--green)}h2{font-size:clamp(35px,4vw,48px);line-height:1.1;margin-bottom:24px}h3{font-size:20px;line-height:1.3;letter-spacing:-.35px}p{line-height:1.65}p:last-child{margin-bottom:0}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:1.8px;font-weight:650;margin-bottom:22px;color:var(--accent)}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:68px;padding:72px 0 65px;align-items:center}.hero-copy>p:not(.eyebrow){max-width:480px}.lede{font-size:20px;line-height:1.5}.hero-copy>p:not(.lede):not(.eyebrow):not(.small-note){color:var(--muted);font-size:15px}.actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:29px}.text-link{font-size:14px;font-weight:600;text-decoration:none;display:inline-block}.text-link:hover{text-decoration:underline}.small-note{font-size:12px!important;color:var(--muted);line-height:1.5;margin-top:18px}.listening-room{background:#eeeddf;border:1px solid #d9dcca;padding:30px 32px 24px;border-radius:14px;box-shadow:0 20px 45px -32px #52603b55;transform:rotate(1deg)}.room-top{display:flex;align-items:center;justify-content:space-between}.room-top .eyebrow{color:var(--green)}.folio{font-size:9px;letter-spacing:1.1px;color:var(--muted);align-self:start}.listening-room h2{font-size:39px;letter-spacing:-1px;margin:10px 0 8px}.listening-room>p{font-size:14px;color:var(--muted)}.route{display:flex;align-items:center;justify-content:space-between;margin-top:30px;gap:8px;font-family:var(--serif);font-size:27px}.route strong{font-weight:400;color:var(--accent)}.route span:nth-child(even){font-family:var(--sans);font-size:18px;color:#859281}.voices{width:100%;height:auto;margin:12px 0 4px}.staff{stroke:#d7dbcc;fill:none;stroke-width:1}.voice{stroke-width:2;fill:none}.voice circle{stroke:none}.upper{stroke:#a67b34}.upper circle{fill:#a67b34}.lower{stroke:var(--green)}.lower circle{fill:var(--green)}.note-label{font-size:12px;font-family:var(--sans);text-anchor:middle;fill:var(--muted)}.demo-options{display:flex;padding:4px;background:#dfe3d4;border-radius:7px;gap:4px;margin-bottom:15px}.demo-options button{flex:1;border:0;background:transparent;border-radius:4px;padding:10px 7px;font-size:12px;color:var(--green)}.demo-options button[aria-pressed=true]{background:var(--white);box-shadow:0 1px 4px #243a2820}.demo-play{width:100%;background:var(--green);color:var(--paper);border:0}.demo-play:hover{background:#173d31}.listening-room .small-note{min-height:36px;margin-top:12px}.principles{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:23px 0;display:flex;gap:36px;align-items:center;font-size:13px}.principles span{font-family:var(--serif);font-size:18px}.principles a{margin-left:auto;font-size:12px;color:var(--muted)}.score-section{padding:95px 0 85px}.section-intro{display:grid;grid-template-columns:1.1fr 1fr;gap:0 70px;align-items:end;margin-bottom:36px}.section-intro .eyebrow{grid-column:1/-1;margin-bottom:16px}.section-intro h2{margin:0}.section-intro p:last-child{color:var(--muted);max-width:440px}.app-figure{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--white);box-shadow:0 20px 70px -42px #234d4050}.window-bar{height:34px;background:#e9ebdf;display:flex;gap:6px;align-items:center;padding:0 14px;border-bottom:1px solid #d6dbcf}.window-bar i{width:7px;height:7px;border-radius:50%;background:#b6beb0}.window-bar span{font-size:9px;color:#687665;margin-left:12px}.app-figure img{width:100%;height:auto;display:block}.app-figure figcaption{font-size:11px;color:var(--muted);padding:14px 20px;border-top:1px solid var(--line)}.learning-strip{background:#e7eadf;padding:74px 0}.learning-head{display:flex;gap:12%;align-items:center}.learning-head h2{flex:1}.learning-head p{flex:1;color:var(--muted);max-width:420px}.learning-steps{list-style:none;padding:0;margin:30px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:36px}.learning-steps li{border-top:1px solid #a7b5a1;padding-top:20px}.learning-steps span{font-size:11px;color:var(--accent);font-weight:600}.learning-steps h3{font-family:var(--serif);font-size:27px;font-weight:400;margin:18px 0 12px}.learning-steps p{font-size:14px;color:var(--muted)}.instruments{padding:85px 0;display:grid;grid-template-columns:1fr 1.2fr;gap:70px;border-bottom:1px solid var(--line)}.instrument-copy{display:grid;grid-template-columns:1fr 1fr;gap:40px}.instrument-symbol{font-size:39px;font-family:var(--serif);color:var(--accent);display:block;margin-bottom:20px}.instrument-copy p{font-size:14px;color:var(--muted)}.instrument-copy h3{font-family:var(--serif);font-size:27px;font-weight:400}.book-section{padding:85px 0;display:grid;grid-template-columns:1fr 1fr;gap:100px;align-items:center}.book-index{background:#e9e4d7;border-left:4px solid var(--green);padding:30px 35px;max-width:450px;transform:rotate(-1deg)}.book-index>div{padding:18px 0;border-bottom:1px solid #cccbbd;font-family:var(--serif);font-size:24px;display:flex;align-items:center;gap:17px}.book-index b{font-family:var(--sans);font-size:11px;font-weight:400;color:var(--accent)}.book-index span:last-child{margin-left:auto}.book-index>p:last-child{font-size:15px;margin:30px 0 8px}.book-section>div:last-child>p:not(.eyebrow){color:var(--muted);font-size:15px}.commons{background:var(--green);color:var(--paper);padding:78px 0}.commons .eyebrow{color:#e5b493}.commons-inner{display:grid;grid-template-columns:1.5fr 1fr;gap:100px;align-items:center}.commons-inner>div>p{max-width:590px;color:#e0e7dc}.commons h2{font-size:48px}.commons .actions>a:not(.button){font-size:14px}.release-note{border-left:1px solid #6e8b76;padding-left:44px}.release-note h3{font-family:var(--serif);font-size:26px;font-weight:400;margin-top:14px}.release-note p,.release-note a{font-size:13px;color:#e0e7dc}.site-footer{padding:42px 0 32px;display:grid;grid-template-columns:1fr 2fr;gap:18px}.site-footer .wordmark span{font-size:27px}.site-footer p{font-size:13px;color:var(--muted);text-align:right;align-self:center;margin:0}.site-footer>div{display:flex;gap:22px;flex-wrap:wrap;grid-column:1/-1;font-size:11px}.site-footer small{grid-column:1/-1;color:var(--muted);font-size:10px}.docs-shell{display:grid;grid-template-columns:215px 1fr;gap:60px;padding-top:50px;padding-bottom:90px}.docs-nav{align-self:start;position:sticky;top:24px;font-size:13px}.docs-nav .eyebrow{margin-bottom:14px}.docs-nav a{display:block;padding:9px 0;text-decoration:none;color:var(--muted)}.docs-nav a:hover,.docs-nav a[aria-current=page]{color:var(--green);font-weight:600}.docs-nav a[aria-current=page]{border-left:2px solid var(--accent);padding-left:12px}.docs-content{max-width:780px;min-width:0}.docs-content h1{font-size:52px;letter-spacing:-1.5px;margin-bottom:23px}.docs-content h2{font-family:var(--serif);font-size:30px;letter-spacing:-.7px;margin-top:45px;margin-bottom:17px}.docs-content h3{font-size:18px;margin-top:30px}.docs-content p,.docs-content li{font-size:16px;line-height:1.75}.docs-content li{margin:8px 0}.docs-content ul,.docs-content ol{padding-left:23px}.docs-content .intro{font-size:20px;color:var(--muted);line-height:1.55}.callout{border-left:3px solid var(--accent);background:#eeecdf;padding:18px 22px;margin:28px 0}.callout p{font-size:14px}.docs-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}.docs-grid a{padding:20px;border:1px solid var(--line);border-radius:7px;text-decoration:none;background:var(--white)}.docs-grid a:hover{border-color:var(--green)}.docs-grid h2{font-size:24px;margin:0 0 8px}.docs-grid p{font-size:13px;margin:0;color:var(--muted)}.docs-content code{font-size:.87em;background:#e8ecdf;padding:2px 5px;border-radius:3px}.docs-content pre{white-space:pre-wrap;overflow-wrap:anywhere;padding:20px;background:#e8ecdf;font-size:13px;line-height:1.6;border-radius:6px}.docs-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px}.docs-content td,.docs-content th{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}.reference-list{columns:2;list-style:none;padding:0!important}.reference-list li{break-inside:avoid;font-size:14px}.doc-search{width:100%;padding:12px 15px;border:1px solid #b6c2b1;border-radius:6px;background:var(--white);margin:15px 0;font-size:15px}.reference-text{font-family:var(--sans)!important;background:transparent!important;padding:0!important;line-height:1.8!important;font-size:15px!important}[hidden]{display:none!important}
@media(min-width:1500px){.hero{padding-top:90px;padding-bottom:85px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{gap:35px}.hero h1{font-size:49px}.listening-room{padding:25px}.principles{gap:22px}.principles span{font-size:16px}.book-section{gap:50px}.instruments{gap:40px;grid-template-columns:1fr}.commons-inner{gap:50px}.docs-shell{gap:32px;grid-template-columns:180px 1fr}}
@media(max-width:720px){.wrap{width:calc(100% - 36px)}.site-header{height:auto;min-height:86px;gap:18px;flex-wrap:wrap;padding:20px 0}.wordmark span{font-size:30px}.site-header nav{gap:18px;font-size:12px;width:100%;justify-content:space-between}.site-header nav .button{padding:8px 12px;font-size:12px}.hero{grid-template-columns:1fr;padding:45px 0;gap:38px}.hero h1{font-size:49px;max-width:560px}.hero-copy>p:not(.eyebrow){max-width:100%}.listening-room{transform:none;padding:26px 23px}.principles{flex-wrap:wrap;gap:12px 22px}.principles a{margin-left:0;width:100%}.section-intro{grid-template-columns:1fr;gap:20px}.score-section{padding:55px 0}.learning-strip{padding:50px 0}.learning-head{display:block}.learning-steps{grid-template-columns:1fr 1fr;gap:28px}.learning-head p{max-width:none}.instruments{padding:50px 0;gap:15px}.instrument-copy{gap:25px}.book-section{grid-template-columns:1fr;padding:55px 0;gap:38px}.book-index{max-width:none}.commons{padding:50px 0}.commons-inner{grid-template-columns:1fr;gap:40px}.commons h2{font-size:40px}.release-note{padding-left:22px}.site-footer{grid-template-columns:1fr}.site-footer p{text-align:left}.site-footer>div{gap:14px}.docs-shell{display:block;padding-top:28px}.docs-nav{position:static;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:32px;display:flex;flex-wrap:wrap;gap:0 18px}.docs-nav .eyebrow{width:100%}.docs-nav a{padding:6px 0}.docs-nav a[aria-current=page]{padding-left:0;border-left:0;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:5px}.docs-content h1{font-size:43px}.docs-content p,.docs-content li{font-size:15px}.docs-grid{grid-template-columns:1fr}.reference-list{columns:1}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}.button:hover{transform:none}}

/* Listening example: these are voice-leading paths, not a musical staff. */
.hero-trust{font-size:12px!important;color:var(--green)!important;max-width:450px!important}
.voice-heading{display:flex;justify-content:space-between;gap:12px;font-size:11px!important;font-weight:650;margin:22px 0 0!important;color:var(--green)!important}
.voice-heading span{font-weight:400;color:var(--muted);text-align:right}
.voices{margin:7px 0 0}.bass-lane{border-top:1px solid var(--line);padding-top:12px;margin-bottom:14px}.bass-lane .voice-heading{margin:0!important}
.bass-route{display:flex;justify-content:space-around;align-items:center;font-family:var(--serif);font-size:26px;margin-top:12px}.bass-route strong{color:var(--accent);font-weight:400}.bass-route>span:nth-child(even){font-family:var(--sans);font-size:16px;color:#71816d}.bass-route>span:first-child,.bass-route>span:last-child,.bass-route strong{width:50px;text-align:center}
.listening-room .harmony-explanation{font-size:12px;line-height:1.55;min-height:38px;margin-bottom:16px}
.demo-listening{display:flex;align-items:center;gap:12px;margin-top:12px}.demo-listening button{flex:0 0 auto;min-height:36px;padding:8px 10px;border:1px solid #b8c3af;border-radius:5px;background:transparent;color:var(--green);font-size:12px}.demo-listening button[aria-pressed=true]{background:var(--green);color:var(--paper)}.demo-listening span{font-size:11px;line-height:1.45;color:var(--muted)}
.practice-journey{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin:0 0 34px}.practice-journey li{border-top:1px solid var(--line);padding-top:18px}.practice-journey b{font-size:13px;color:var(--green)}.practice-journey p{font-size:14px;color:var(--muted);margin:10px 0 0}
@media(max-width:720px){.practice-journey{grid-template-columns:1fr;gap:18px}.voice-heading{font-size:10px!important}.hero h1{font-size:48px}}

@media(max-width:460px){.hero h1{font-size:42px}}

@media(max-width:720px){.note-label{font-size:16px}}