:root{
  --ink:#0b0a08;--orange:#f08b25;--cream:#f5e6c7;--green:#55c83c;--pink:#e65ca6;--yellow:#f6d719;
  --paper:#f1dfba;--muted:#b9a88a;--line:#5c4d36;--blue:#9dccff;--mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
  --sans:"Helvetica Neue",Helvetica,Arial,sans-serif;--max:1480px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--orange)}body{margin:0;background:var(--orange);color:var(--ink);font-family:var(--sans);line-height:1.42;min-height:100vh}a{color:inherit}button,input{font:inherit}button,input[type="range"]{cursor:pointer}.wrap{width:min(calc(100% - 34px),var(--max));margin-inline:auto}.skip{position:fixed;left:12px;top:-100px;z-index:999;background:var(--yellow);padding:10px 14px;font-weight:900}.skip:focus{top:12px}:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
.guide-header{position:sticky;top:0;z-index:50;background:rgba(11,10,8,.97);color:var(--cream);border-bottom:1px solid #4a3b28;backdrop-filter:blur(14px)}.guide-header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.guide-brand{display:flex;align-items:center;gap:10px;text-decoration:none}.guide-brand img{width:42px;height:42px}.guide-brand span{display:flex;flex-direction:column}.guide-brand strong{font:950 clamp(25px,2.4vw,38px)/.9 var(--sans);letter-spacing:-.055em}.guide-brand small{font:800 8px/1.3 var(--mono);letter-spacing:.1em;color:#a9997c;margin-top:4px}.guide-head-actions{display:flex;gap:9px;align-items:center}.back-lab{display:inline-flex;height:34px;align-items:center;padding:0 11px;background:var(--cream);border:1px solid var(--cream);color:var(--ink);text-decoration:none;font:900 9px/1 var(--mono)}.back-lab:hover{background:var(--yellow);border-color:var(--yellow)}.guide-chip{border:1px solid #6c5a3e;padding:8px 10px;color:var(--yellow);font:800 10px/1 var(--mono);white-space:nowrap}
.chapter-nav{position:sticky;top:72px;z-index:40;background:#17140f;border-bottom:2px solid var(--ink);overflow:auto}.chapter-nav-inner{display:flex;min-width:max-content}.chapter-nav a{color:#aa9879;text-decoration:none;padding:11px 15px;font:900 9px/1 var(--mono);border-right:1px solid #3f3527}.chapter-nav a:hover,.chapter-nav a.is-active{background:var(--yellow);color:var(--ink)}
.guide-main{padding:22px 0 64px}.guide-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(380px,.9fr);gap:18px;align-items:stretch;margin-bottom:24px}.guide-hero>div:first-child{padding:26px 4px 22px}.eyebrow{font:900 9px/1.2 var(--mono);letter-spacing:.12em;margin:0 0 9px}.guide-hero h1{font-size:clamp(54px,7vw,108px);line-height:.83;letter-spacing:-.07em;text-transform:uppercase;margin:0;max-width:9ch}.guide-hero h1 em{font-style:normal;color:var(--cream);text-shadow:4px 4px 0 var(--ink)}.hero-copy{font-size:clamp(16px,1.5vw,21px);font-weight:700;max-width:46em;margin:24px 0 0}.hero-formula{background:var(--ink);color:var(--cream);border:2px solid var(--ink);box-shadow:7px 7px 0 #a55c1a;padding:24px;display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:10px}.hero-formula div{display:flex;flex-direction:column;align-items:center;text-align:center}.hero-formula b{font:950 clamp(48px,5vw,78px)/.8 var(--mono);color:var(--yellow)}.hero-formula span{font:900 9px/1.4 var(--mono);color:#b9a88a;margin-top:12px}.hero-formula i{font:950 32px/1 var(--mono);font-style:normal;color:var(--pink)}.hero-formula .formula-result b{color:var(--green)}.hero-formula small{grid-column:1/-1;border-top:1px solid #4b3f2d;padding-top:14px;font:800 10px/1.5 var(--mono);color:#b9a88a;text-align:center}.hero-formula small strong{color:var(--cream)}
.guide-section{scroll-margin-top:122px;margin:36px 0 54px}.section-head{display:flex;gap:14px;align-items:flex-end;border-bottom:3px solid var(--ink);padding:0 2px 11px;margin-bottom:14px}.section-head>span{font:950 48px/.8 var(--mono);color:var(--cream);text-shadow:3px 3px 0 var(--ink)}.section-head .eyebrow{margin-bottom:5px}.section-head h2{margin:0;font-size:clamp(28px,4vw,56px);line-height:.9;letter-spacing:-.05em;text-transform:uppercase}.explain-grid{display:grid;gap:14px}.two-col{grid-template-columns:1fr 1fr}.lesson-card{border:2px solid var(--ink);box-shadow:5px 5px 0 rgba(11,10,8,.28);padding:20px}.lesson-card p{font-weight:700;margin:18px 0 0}.dark-card{background:var(--ink);color:var(--cream)}.paper-card{background:var(--paper)}.card-label{font:900 9px/1.2 var(--mono);letter-spacing:.12em;color:var(--pink);margin-bottom:18px}.paper-card .card-label{color:#7f3c60}
.beat-demo{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.beat-orb{aspect-ratio:1;border-radius:50%;border:8px solid #272219;background:var(--green);color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;transition:transform .08s ease,box-shadow .08s ease,background .08s ease}.beat-orb b{font:950 clamp(42px,5vw,72px)/.8 var(--mono)}.beat-orb span{font:900 8px/1 var(--mono);margin-top:8px}.beat-orb.is-one{background:var(--yellow)}.beat-orb.is-hit{transform:scale(1.06);box-shadow:0 0 0 5px var(--cream),0 0 28px currentColor}.bar-brace{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;color:var(--yellow);margin-top:10px}.bar-brace span{height:2px;background:currentColor;font-size:0}.bar-brace strong{font:900 10px/1 var(--mono)}
.four-bars{display:grid;grid-template-columns:repeat(4,1fr);border:2px solid var(--ink)}.four-bars div{display:grid;grid-template-columns:repeat(4,1fr);border-right:2px solid var(--ink)}.four-bars div:last-child{border-right:0}.four-bars strong{grid-column:1/-1;background:var(--ink);color:var(--cream);padding:7px;font:900 8px/1 var(--mono);text-align:center}.four-bars span{aspect-ratio:1;display:grid;place-items:center;border-right:1px solid #9e8a67;font:900 18px/1 var(--mono);background:var(--cream)}.four-bars span:last-child{border-right:0}.plain-rule{margin-top:18px;display:grid;grid-template-columns:auto 1fr;gap:12px;border-top:2px solid var(--ink);padding-top:12px}.plain-rule b{font:900 9px/1 var(--mono);background:var(--yellow);padding:6px 8px;align-self:start}.plain-rule span{font:800 11px/1.5 var(--mono)}.dark-rule{border-color:#584a35}.dark-rule b{color:var(--ink)}
.tempo-lab{padding:24px}.tempo-controls{display:grid;grid-template-columns:minmax(280px,1fr) auto;gap:18px;align-items:end}.tempo-controls label{display:grid;grid-template-columns:auto 88px;gap:8px;align-items:center}.tempo-controls label>span{font:900 10px/1 var(--mono);letter-spacing:.1em}.tempo-controls output{font:950 54px/.8 var(--mono);color:var(--yellow);text-align:right}.tempo-controls input{grid-column:1/-1;width:100%;accent-color:var(--green)}.tempo-buttons{display:flex;gap:6px}.tempo-buttons button{height:40px;min-width:58px;border:1px solid #6c5a3e;background:#211c14;color:var(--cream);font:900 10px/1 var(--mono)}.tempo-buttons button.active{background:var(--green);color:var(--ink);border-color:var(--green)}.tempo-readouts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#4a3d2c;border:1px solid #4a3d2c;margin:18px 0}.tempo-readouts div{background:#17140f;padding:16px}.tempo-readouts small{display:block;font:900 8px/1 var(--mono);color:#a9997c}.tempo-readouts strong{display:block;font:950 clamp(24px,3vw,42px)/1 var(--mono);color:var(--cream);margin-top:5px}.tempo-visual{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}.tempo-track{position:relative;height:68px;background:#221e16;border:1px solid #5a4b36;display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden}.tempo-track span{display:grid;place-items:center;border-right:1px solid #5a4b36;font:950 18px/1 var(--mono);color:#78674d}.tempo-track i{position:absolute;left:0;top:0;width:25%;height:100%;background:linear-gradient(90deg,rgba(85,200,60,.08),rgba(85,200,60,.45));border-right:3px solid var(--green);transform:translateX(0);pointer-events:none}.demo-play{height:68px;padding:0 18px;border:0;background:var(--yellow);font:950 10px/1 var(--mono);color:var(--ink)}.demo-play.is-playing{background:var(--pink)}.answer-callout{display:grid;grid-template-columns:minmax(260px,.45fr) 1fr;gap:18px;margin-top:12px;padding:14px;border:1px solid #5c4d36;background:#1d1912}.answer-callout strong{font:950 11px/1.35 var(--mono);color:var(--green)}.answer-callout span{font:800 11px/1.5 var(--mono)}.answer-callout.inverse strong{color:var(--pink)}.source-note{font:800 9px/1.4 var(--mono)!important;color:#a9997c!important}.source-note a,.lesson-card sup a,.song-intro sup a,.structure-help sup a{color:var(--yellow);font:900 9px/1 var(--mono);text-decoration:none}.paper-card sup a,.song-intro sup a,.structure-help sup a{color:#7b315b}
.grid-lab{padding:24px}.grid-switch{display:flex;gap:8px}.grid-switch button{height:48px;min-width:150px;border:2px solid var(--ink);background:transparent;font:950 13px/1 var(--mono)}.grid-switch button.active{background:var(--green)}.grid-summary{display:grid;grid-template-columns:auto 1fr auto;gap:15px;align-items:center;margin:16px 0;font-family:var(--mono)}.grid-summary strong{font-size:20px}.grid-summary span{font-weight:800}.grid-summary b{background:var(--ink);color:var(--yellow);padding:8px 10px;font-size:11px}.mini-sequencer{display:grid;border:2px solid var(--ink);background:var(--ink);gap:1px;overflow:auto}.mini-bar{display:grid;gap:1px;background:var(--ink);min-width:0}.mini-step{min-width:38px;height:62px;background:var(--cream);display:grid;place-items:center;position:relative;font:900 12px/1 var(--mono)}.mini-step::after{content:attr(data-time);position:absolute;bottom:5px;left:4px;right:4px;font:800 7px/1 var(--mono);color:#7e6e55;text-align:center}.mini-step.is-offbeat{background:#e0cba3}.mini-step.is-bar-start{box-shadow:inset 4px 0 0 var(--pink)}.mini-step b{font-size:14px}.same-time{display:flex;align-items:center;justify-content:center;gap:18px;margin:18px 0 4px}.same-time div{display:flex;align-items:baseline;gap:8px}.same-time div span{font:950 38px/.8 var(--mono);color:#7b315b}.same-time div b{font:900 11px/1 var(--mono)}.same-time i{font:950 25px/1 var(--mono);font-style:normal}.same-time>strong{background:var(--green);padding:8px 10px;font:950 10px/1 var(--mono)}
.pattern-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.pattern-card{background:var(--paper);border:2px solid var(--ink);padding:17px}.pattern-title{display:flex;gap:12px;align-items:center}.pattern-title>b{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:var(--pink);font:950 20px/1 var(--mono)}.pattern-title span{display:flex;flex-direction:column}.pattern-title strong{font:950 13px/1 var(--mono)}.pattern-title small{font:800 9px/1.3 var(--mono);color:#796a52;margin-top:3px}.pattern-strip{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;margin:16px 0}.pattern-strip span{height:34px;background:#d5c095;border:1px solid #907b5b;position:relative}.pattern-strip span::before{content:attr(data-label);position:absolute;left:4px;top:4px;font:800 7px/1 var(--mono);color:#726048}.pattern-strip span.is-on{background:var(--green);box-shadow:inset 0 -7px 0 rgba(11,10,8,.12)}.pattern-strip span.is-on::after{content:"●";position:absolute;right:6px;bottom:3px;font-size:13px}.pattern-card p{font-weight:700;margin:0}.decision-board{margin-top:14px;border:2px solid var(--ink);display:grid;grid-template-columns:1.4fr repeat(5,1fr);background:var(--ink);gap:1px}.decision-board h3{grid-row:1/-1;margin:0;background:#17140f;color:var(--cream);padding:18px;font-size:22px;letter-spacing:-.04em}.decision-board div{background:var(--cream);padding:12px}.decision-board span{display:block;font:800 9px/1.35 var(--mono)}.decision-board strong{display:block;font:950 13px/1.2 var(--mono);color:#7b315b;margin-top:5px}
.groove-top{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:end}.groove-top label{display:grid;grid-template-columns:auto 160px;gap:8px;align-items:center}.groove-top label span{font:900 10px/1 var(--mono)}.groove-top output{font:950 17px/1 var(--mono);color:var(--yellow);text-align:right}.groove-top input{grid-column:1/-1;width:100%;accent-color:var(--pink)}.groove-values{display:flex;flex-direction:column;gap:5px;font:850 9px/1.2 var(--mono);color:#b9a88a;text-align:right}.groove-ruler{position:relative;height:120px;border:1px solid #554835;background:#17140f;margin:18px 0;overflow:hidden}.groove-ruler::before{content:"";position:absolute;left:0;right:0;top:59px;height:2px;background:#554835}.g-beat,.g-off{position:absolute;top:35px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;font:950 18px/1 var(--mono);z-index:2}.g-beat{background:var(--green);color:var(--ink)}.g-beat.one{left:0;transform:translateX(-10%)}.g-beat.two{right:0;transform:translateX(10%)}.g-off{left:50%;transform:translateX(-50%);background:var(--pink);color:var(--ink);transition:left .15s ease}.groove-dot{position:absolute;left:50%;top:15px;width:3px;height:90px;background:var(--pink);transform:translateX(-50%);transition:left .15s ease;opacity:.6}.groove-compare{display:grid;grid-template-columns:1fr 1fr;gap:10px}.groove-compare div{border:1px solid #554835;padding:13px;display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center}.groove-compare b{font:950 18px/1 var(--mono);color:var(--yellow)}.groove-compare span{font:900 13px/1 var(--mono)}.groove-compare small{font:800 8px/1 var(--mono);color:#a9997c}
.ui-map{padding:16px}.ui-image-wrap{position:relative;border:1px solid #5d4f39;overflow:hidden;background:#17140f}.ui-image-wrap img{display:block;width:100%;height:auto}.ui-pin{position:absolute;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--yellow);color:var(--ink);border:4px solid var(--ink);box-shadow:0 0 0 3px var(--cream);font:950 13px/1 var(--mono)}.ui-pin.p1{left:16%;top:11%}.ui-pin.p2{left:46%;top:11%}.ui-pin.p3{left:75%;top:11%}.ui-pin.p4{left:23%;top:52%}.ui-pin.p5{left:65%;top:38%}.ui-pin.p6{right:3%;top:56%}.ui-legend{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#4f422f;border:1px solid #4f422f;margin-top:14px}.ui-legend div{background:#17140f;display:grid;grid-template-columns:38px 1fr;gap:10px;padding:12px}.ui-legend b{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--yellow);color:var(--ink);font:950 11px/1 var(--mono)}.ui-legend span{font:800 9px/1.4 var(--mono);color:#b9a88a}.ui-legend strong{display:block;color:var(--cream);font-size:9px;margin-bottom:4px}
.song-intro{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:14px}.song-intro p{margin:0;font-size:16px;font-weight:700}.structure-toolbar{display:flex;gap:6px;flex-wrap:wrap}.structure-toolbar button{height:38px;border:2px solid var(--ink);background:transparent;font:900 9px/1 var(--mono);padding:0 10px}.structure-toolbar button:hover{background:var(--yellow)}.structure-track{display:flex;gap:3px;overflow:auto;margin:16px 0;min-height:92px;align-items:stretch}.structure-block{min-width:72px;flex:var(--bars) 0 0;background:var(--section-color);border:2px solid var(--ink);padding:10px;display:flex;flex-direction:column;justify-content:space-between;cursor:pointer}.structure-block strong{font:950 14px/1 var(--mono)}.structure-block small{font:850 8px/1 var(--mono)}.structure-stats{display:flex;justify-content:space-between;gap:12px;border-top:2px solid var(--ink);padding-top:10px;font:900 11px/1 var(--mono)}.structure-stats strong{color:#7b315b}.structure-help{font:800 10px/1.5 var(--mono)!important;color:#665943}.build-recipe{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}.build-recipe article{border:2px solid var(--ink);background:#17140f;color:var(--cream);padding:16px;position:relative;min-height:160px}.build-recipe article>b{position:absolute;right:10px;top:8px;font:950 46px/.8 var(--mono);color:#3f3528}.build-recipe h3{font-size:22px;line-height:1;margin:0 0 10px;color:var(--yellow)}.build-recipe p{font-weight:700;margin:0;max-width:30ch;color:#cbbb9d}
.cheat-sheet{background:var(--ink);color:var(--cream);border:2px solid var(--ink);box-shadow:7px 7px 0 #a55c1a;padding:22px;margin:56px 0}.cheat-sheet h2{font-size:clamp(30px,4vw,55px);line-height:.9;letter-spacing:-.05em;text-transform:uppercase;margin:0}.cheat-sheet .eyebrow{color:var(--pink)}.cheat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#544632;border:1px solid #544632;margin-top:18px}.cheat-grid p{background:#17140f;margin:0;padding:13px}.cheat-grid strong{display:block;font:950 13px/1 var(--mono);color:var(--yellow)}.cheat-grid span{display:block;font:800 9px/1.4 var(--mono);color:#b9a88a;margin-top:5px}
.sources-section{margin-top:56px}.source-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.source-list a{text-decoration:none;border:2px solid var(--ink);background:var(--paper);display:grid;grid-template-columns:52px 1fr;gap:12px;padding:14px}.source-list a:hover{background:var(--cream)}.source-list b{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--pink);font:950 14px/1 var(--mono)}.source-list span{font:800 10px/1.45 var(--mono);color:#665943}.source-list strong{display:block;color:var(--ink);font-size:11px;margin-bottom:4px}.source-method{font:800 9px/1.5 var(--mono);max-width:90ch}.guide-footer{background:var(--ink);color:#a9997c;border-top:1px solid #4a3b28;padding:20px 0}.guide-footer .wrap{display:flex;justify-content:space-between;gap:20px;font:800 8px/1.4 var(--mono)}.guide-footer nav{display:flex;gap:14px}.guide-footer a{text-decoration:none}.guide-footer a:hover{color:var(--yellow)}.noscript{background:var(--yellow);padding:12px;font-weight:900}
@media(max-width:1000px){.guide-hero,.two-col,.song-intro{grid-template-columns:1fr}.guide-hero h1{max-width:none}.hero-formula{min-height:360px}.pattern-grid{grid-template-columns:1fr}.decision-board{grid-template-columns:1fr 1fr}.decision-board h3{grid-row:auto;grid-column:1/-1}.ui-legend{grid-template-columns:repeat(2,1fr)}.build-recipe{grid-template-columns:repeat(2,1fr)}.cheat-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:720px){.wrap{width:min(calc(100% - 20px),var(--max))}.guide-header-inner{min-height:64px}.guide-brand small,.guide-chip{display:none}.guide-brand strong{font-size:24px}.back-lab{font-size:7px;padding:0 8px}.chapter-nav{top:64px}.guide-main{padding-top:12px}.guide-hero{margin-bottom:12px}.guide-hero>div:first-child{padding-top:16px}.guide-hero h1{font-size:52px}.hero-copy{font-size:15px}.hero-formula{grid-template-columns:1fr auto 1fr;min-height:0;padding:16px}.hero-formula>i:nth-of-type(2){display:none}.hero-formula .formula-result{grid-column:1/-1}.section-head>span{font-size:34px}.beat-demo{gap:5px}.beat-orb{border-width:4px}.beat-orb b{font-size:34px}.beat-orb span{display:none}.four-bars{grid-template-columns:1fr 1fr}.four-bars div:nth-child(2){border-right:0}.four-bars div:nth-child(-n+2){border-bottom:2px solid var(--ink)}.tempo-controls{grid-template-columns:1fr}.tempo-buttons{overflow:auto}.tempo-readouts{grid-template-columns:1fr 1fr}.tempo-readouts div:last-child{grid-column:1/-1}.tempo-visual{grid-template-columns:1fr}.demo-play{height:46px}.answer-callout{grid-template-columns:1fr}.grid-summary{grid-template-columns:1fr}.grid-summary b{justify-self:start}.same-time{flex-wrap:wrap}.decision-board{grid-template-columns:1fr}.decision-board h3{grid-column:auto}.groove-top{grid-template-columns:1fr}.groove-values{text-align:left}.groove-compare{grid-template-columns:1fr}.ui-legend{grid-template-columns:1fr}.ui-pin{width:26px;height:26px;border-width:3px;font-size:10px}.build-recipe{grid-template-columns:1fr}.cheat-grid{grid-template-columns:1fr 1fr}.source-list{grid-template-columns:1fr}.guide-footer .wrap{flex-direction:column}.guide-footer nav{flex-wrap:wrap}}
@media(max-width:480px){.guide-hero h1{font-size:43px}.hero-formula{grid-template-columns:1fr}.hero-formula i{display:none}.hero-formula div{padding:8px}.tempo-readouts{grid-template-columns:1fr}.tempo-readouts div:last-child{grid-column:auto}.grid-switch button{min-width:0;flex:1}.cheat-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.beat-orb,.g-off,.groove-dot{transition:none!important}}

/* v2.7.2 explainer readability + interaction pass */
body#soundLabGuide{font-size:17px;line-height:1.55}
#soundLabGuide .guide-header-inner{min-height:64px}
#soundLabGuide .guide-brand img{width:36px;height:36px}
#soundLabGuide .guide-brand strong{font-size:clamp(21px,2vw,29px);letter-spacing:-.045em}
#soundLabGuide .guide-brand small{font-size:9px;color:#d6c7aa}
#soundLabGuide .guide-chip{font-size:10px;color:var(--yellow)}
#soundLabGuide .chapter-nav{top:64px}
#soundLabGuide .chapter-nav a{font-size:10px;padding:12px 16px}
#soundLabGuide .guide-hero{grid-template-columns:minmax(0,1.15fr) minmax(360px,.85fr);align-items:center}
#soundLabGuide .guide-hero>div:first-child{padding:18px 4px 14px}
#soundLabGuide .guide-hero h1{font-size:clamp(42px,5.6vw,78px);line-height:.9;max-width:11ch}
#soundLabGuide .hero-copy{font-size:clamp(16px,1.2vw,19px);line-height:1.55;max-width:54em;margin-top:18px}
#soundLabGuide .eyebrow{font-size:10px}
#soundLabGuide .hero-formula{padding:20px}
#soundLabGuide .hero-formula b{font-size:clamp(42px,4.2vw,64px)}
#soundLabGuide .hero-formula span,#soundLabGuide .hero-formula small{font-size:11px;color:#d2c1a1}
#soundLabGuide .guide-section{scroll-margin-top:112px}
#soundLabGuide .section-head h2{font-size:clamp(32px,3.6vw,52px)}
#soundLabGuide .lesson-card p,#soundLabGuide .song-intro p,#soundLabGuide .pattern-card p{font-size:17px;line-height:1.55}
#soundLabGuide .card-label{font-size:11px}
#soundLabGuide .plain-rule span,#soundLabGuide .answer-callout span{font-size:13px;line-height:1.55}
#soundLabGuide .plain-rule b,#soundLabGuide .answer-callout strong{font-size:11px}
#soundLabGuide .source-note{font-size:12px!important;line-height:1.55!important;color:#d6c7aa!important}
#soundLabGuide .paper-card .source-note{color:#514632!important}
#soundLabGuide .ui-legend span{font-size:12px;line-height:1.5;color:#d4c4a7}
#soundLabGuide .ui-legend strong{font-size:11px}
#soundLabGuide .source-method{font-size:12px;line-height:1.55}
#soundLabGuide .source-list span{font-size:12px;line-height:1.5;color:#514632}
#soundLabGuide .source-list strong{font-size:13px}
#soundLabGuide .cheat-grid span{font-size:11px;line-height:1.5;color:#d4c4a7}
#soundLabGuide .cheat-grid strong{font-size:14px}
#soundLabGuide .build-recipe p{font-size:15px;line-height:1.5;color:#dfcfb2}
#soundLabGuide .structure-help{font-size:12px!important;line-height:1.6!important;color:#514632}

/* Never put pale/white type on yellow controls. */
#soundLabGuide .skip,#soundLabGuide .chapter-nav a:hover,#soundLabGuide .chapter-nav a.is-active,#soundLabGuide .plain-rule b,#soundLabGuide .demo-play,#soundLabGuide .ui-pin,#soundLabGuide .structure-toolbar button:hover,#soundLabGuide .structure-toolbar button:focus-visible{color:var(--ink)!important}

/* 01: bars read as four separate containers, not one long table. */
#soundLabGuide .four-bars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;border:0;background:transparent}
#soundLabGuide .bar-card{min-width:0;border:3px solid var(--ink);background:var(--cream);color:var(--ink);padding:0;text-align:left;overflow:hidden;transition:transform .12s ease,box-shadow .12s ease}
#soundLabGuide .bar-card>strong{display:flex;justify-content:space-between;align-items:baseline;grid-column:auto;background:var(--ink);color:var(--cream);padding:10px 12px;font:950 27px/1 var(--mono)}
#soundLabGuide .bar-card>strong span{font:900 10px/1 var(--mono);color:var(--yellow)}
#soundLabGuide .bar-beats{display:grid;grid-template-columns:repeat(4,1fr);padding:12px 10px 7px;gap:5px}
#soundLabGuide .bar-beats i{aspect-ratio:1;display:grid;place-items:center;background:#e6d1a8;border:2px solid var(--ink);font:950 20px/1 var(--mono);font-style:normal}
#soundLabGuide .bar-card>small{display:block;padding:0 10px 10px;font:850 10px/1.2 var(--mono);color:#62543d}
#soundLabGuide .bar-card.is-active{box-shadow:0 0 0 4px var(--pink);transform:translateY(-2px)}
#soundLabGuide .bar-card.is-active>strong{background:#1a1712}
#soundLabGuide .bar-card:focus-visible{outline:4px solid var(--blue);outline-offset:2px}
#soundLabGuide .loop-bracket{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;margin:12px 0 0}
#soundLabGuide .loop-bracket span{height:3px;background:var(--ink)}
#soundLabGuide .loop-bracket strong{font:950 11px/1 var(--mono)}
#soundLabGuide .bar-inspector{margin-top:12px!important;background:var(--ink);color:var(--cream);padding:12px 14px;border-left:8px solid var(--pink);font-size:14px!important}
#soundLabGuide .bar-inspector strong{color:var(--yellow);font-family:var(--mono)}

/* 03: the visual grid is grouped into four unmistakable bars. */
#soundLabGuide .mini-sequencer{grid-template-columns:repeat(4,minmax(168px,1fr))!important;gap:7px;background:transparent;border:0;padding:2px;overflow:auto}
#soundLabGuide .mini-bar{position:relative;padding-top:28px;border:3px solid var(--ink);background:var(--ink)}
#soundLabGuide .mini-bar-label{position:absolute;left:0;right:0;top:0;height:28px;display:flex;align-items:center;padding:0 9px;background:var(--ink);color:var(--cream);font:950 10px/1 var(--mono);letter-spacing:.08em}
#soundLabGuide .mini-step{min-width:38px;height:66px}
#soundLabGuide .mini-step.is-bar-start{box-shadow:none}

/* 02: real calculator, independent from the demo slider. */
#soundLabGuide .tempo-calculator{margin:20px 0;border:2px solid #6b5a40;background:#f1dfba;color:var(--ink);padding:18px}
#soundLabGuide .calculator-head{display:flex;justify-content:space-between;gap:16px;align-items:end}
#soundLabGuide .calculator-head span{display:block;font:900 10px/1 var(--mono);letter-spacing:.12em;color:#6f3656}
#soundLabGuide .calculator-head h3{margin:5px 0 0;font-size:clamp(25px,3vw,38px);line-height:1;letter-spacing:-.035em}
#soundLabGuide #syncCalcBpm{min-height:44px;border:2px solid var(--ink);background:var(--ink);color:var(--cream);padding:0 14px;font:900 10px/1 var(--mono)}
#soundLabGuide #syncCalcBpm:hover{background:var(--green);color:var(--ink)}
#soundLabGuide .calc-fields{display:grid;grid-template-columns:.7fr .7fr 1.6fr;gap:10px;margin-top:16px}
#soundLabGuide .calc-fields label{display:flex;flex-direction:column;gap:7px;font:900 10px/1 var(--mono)}
#soundLabGuide .calc-fields input,#soundLabGuide .calc-fields select{width:100%;min-height:48px;border:2px solid var(--ink);border-radius:0;background:var(--cream);color:var(--ink);padding:0 11px;font:950 16px/1 var(--mono)}
#soundLabGuide .calc-results{display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:2px;margin-top:12px;background:var(--ink);border:2px solid var(--ink)}
#soundLabGuide .calc-results div{background:#17140f;color:var(--cream);padding:13px}
#soundLabGuide .calc-results small{display:block;color:#d5c4a6;font:900 9px/1 var(--mono)}
#soundLabGuide .calc-results strong{display:block;color:var(--yellow);font:950 clamp(21px,2.4vw,34px)/1 var(--mono);margin-top:6px}
#soundLabGuide #calcExplain{font:800 12px/1.55 var(--mono)!important;margin:12px 0 0!important;color:#514632}

/* 07: section builder with guards, examples and accessible controls. */
#soundLabGuide .section-builder-card{padding:22px}
#soundLabGuide .hit-example-row{display:grid;grid-template-columns:minmax(280px,.85fr) 1.15fr;gap:14px;align-items:end;margin-bottom:14px}
#soundLabGuide .hit-example-row label{display:flex;flex-direction:column;gap:7px}
#soundLabGuide .hit-example-row label>span{font:950 11px/1 var(--mono);letter-spacing:.08em}
#soundLabGuide #hitExample{min-height:50px;border:2px solid var(--ink);background:var(--cream);color:var(--ink);padding:0 12px;font:900 14px/1.2 var(--sans)}
#soundLabGuide .hit-example-note{min-height:50px;border-left:7px solid var(--orange);background:#e3cda4;padding:10px 12px;font:800 12px/1.45 var(--mono);color:#493d2c}
#soundLabGuide .builder-rule-strip{display:flex;gap:7px;flex-wrap:wrap;margin:10px 0 14px}
#soundLabGuide .builder-rule-strip span{background:var(--ink);color:var(--cream);padding:7px 9px;font:900 9px/1 var(--mono)}
#soundLabGuide .structure-toolbar{gap:7px}
#soundLabGuide .structure-toolbar button{min-height:42px;font-size:10px;background:var(--cream);color:var(--ink)}
#soundLabGuide .structure-toolbar button:disabled{opacity:.35;cursor:not-allowed;text-decoration:line-through}
#soundLabGuide .structure-feedback{margin-top:12px;padding:10px 12px;border:2px solid var(--ink);background:#e6d1a8;color:var(--ink);font:900 11px/1.4 var(--mono)}
#soundLabGuide .structure-feedback[data-tone="warn"]{background:#f0a466}
#soundLabGuide .structure-feedback[data-tone="ok"]{background:#9bd889}
#soundLabGuide .structure-track{gap:7px;min-height:124px;padding:4px 2px 8px;align-items:stretch}
#soundLabGuide .structure-block{min-width:126px;flex:var(--bars) 0 0;background:var(--section-color);border:3px solid var(--ink);padding:0;display:grid;grid-template-rows:1fr auto;cursor:default;overflow:hidden}
#soundLabGuide .structure-main{border:0;background:transparent;color:var(--ink);padding:13px 11px;text-align:left;display:flex;min-height:78px;flex-direction:column;justify-content:space-between;align-items:flex-start}
#soundLabGuide .structure-main strong{font:950 15px/1.05 var(--mono)}
#soundLabGuide .structure-main small{font:900 10px/1 var(--mono);color:#443927}
#soundLabGuide .structure-block-controls{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink)}
#soundLabGuide .structure-block-controls button{height:34px;border:0;border-right:1px solid var(--ink);background:rgba(245,230,199,.62);color:var(--ink);font:950 18px/1 var(--mono)}
#soundLabGuide .structure-block-controls button:last-child{border-right:0}
#soundLabGuide .structure-block-controls button:hover:not(:disabled){background:var(--ink);color:var(--cream)}
#soundLabGuide .structure-block-controls button:disabled{opacity:.32;cursor:not-allowed}
#soundLabGuide .structure-stats{font-size:13px;padding-top:12px}

@media(max-width:1000px){
  #soundLabGuide .guide-hero{grid-template-columns:1fr}
  #soundLabGuide .guide-hero h1{max-width:13ch}
  #soundLabGuide .hero-formula{min-height:0}
  #soundLabGuide .four-bars{grid-template-columns:repeat(2,minmax(0,1fr))}
  #soundLabGuide .calc-results{grid-template-columns:repeat(2,1fr)}
  #soundLabGuide .hit-example-row{grid-template-columns:1fr}
}
@media(max-width:720px){
  #soundLabGuide .guide-header-inner{min-height:60px}
  #soundLabGuide .chapter-nav{top:60px}
  #soundLabGuide .guide-brand strong{font-size:21px}
  #soundLabGuide .guide-hero h1{font-size:44px}
  #soundLabGuide .hero-copy{font-size:16px}
  #soundLabGuide .four-bars{grid-template-columns:1fr 1fr;gap:7px}
  #soundLabGuide .bar-card>strong{font-size:22px}
  #soundLabGuide .calc-fields{grid-template-columns:1fr 1fr}
  #soundLabGuide .calc-fields label:last-child{grid-column:1/-1}
  #soundLabGuide .calculator-head{align-items:flex-start;flex-direction:column}
  #soundLabGuide .calc-results{grid-template-columns:1fr 1fr}
  #soundLabGuide .structure-block{min-width:116px}
  #soundLabGuide .section-builder-card{padding:15px}
}
@media(max-width:480px){
  #soundLabGuide .guide-hero h1{font-size:38px}
  #soundLabGuide .four-bars{grid-template-columns:1fr}
  #soundLabGuide .bar-beats i{aspect-ratio:auto;height:44px}
  #soundLabGuide .calc-fields,#soundLabGuide .calc-results{grid-template-columns:1fr}
  #soundLabGuide .calc-fields label:last-child{grid-column:auto}
  #soundLabGuide .builder-rule-strip span{width:100%}
}
/* neutralize legacy .four-bars span table rules for the v2.7.2 button cards */
#soundLabGuide .four-bars .bar-beats{aspect-ratio:auto;border:0;background:transparent;place-items:stretch}
#soundLabGuide .four-bars .bar-card>strong span{aspect-ratio:auto;border:0;background:transparent;display:inline;place-items:initial}
#soundLabGuide .guide-hero h1{font-size:clamp(40px,4.9vw,68px)}
/* Final v2.7.2 hero scale: keep the opening compact so the first lesson is visible sooner. */
#soundLabGuide .guide-hero h1{font-size:clamp(38px,4vw,56px);line-height:.92;max-width:12ch}
#soundLabGuide .hero-formula b{font-size:clamp(36px,3.5vw,52px)}
#soundLabGuide .hero-copy{font-size:clamp(16px,1.05vw,17px);margin-top:15px}
/* Final readability pass for interactive learning controls. */
#soundLabGuide .hit-example-note{font-size:14px;line-height:1.5}
#soundLabGuide .builder-rule-strip span{font-size:11px;line-height:1.2}
#soundLabGuide .structure-toolbar button{font-size:12px}
#soundLabGuide .structure-feedback{font-size:13px;line-height:1.45}
#soundLabGuide .structure-help{font-size:14px!important;line-height:1.6!important}
#soundLabGuide .calc-fields label{font-size:11px}
#soundLabGuide #calcExplain{font-size:13px!important}