@font-face{font-family:"Newsreader";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Newsreader";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/newsreader-italic-400-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:400;font-display:swap;src:url(fonts/newsreader-italic-400-latin-ext.woff2) format("woff2");unicode-range:U+0100-02BA,U+1E00-1E9F}
@font-face{font-family:"NumSerif";font-style:normal;font-weight:400 700;font-display:swap;src:url(fonts/newsreader-latin.woff2) format("woff2");unicode-range:U+0030-0039}
@font-face{font-family:"Atkinson";font-style:normal;font-weight:200 800;font-display:swap;src:url(fonts/AtkinsonHyperlegibleNext.woff2) format("woff2")}

:root{
  --bg:#f6efe2;--bg2:#ece2cd;--card:#fbf6ea;--ink:#231a11;--ink2:#3a2d20;--muted:#54442f;
  --line:#cfc0a3;--line-soft:#ddd0b6;--accent:#8a3410;--accent-ink:#fff;--dot-dim:#cbbb9a;--spec-bg:#1c130d;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;--sans:"NumSerif","Atkinson",system-ui,-apple-system,sans-serif;--bar:3rem;color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#130e0a;--bg2:#1a130e;--card:#1c1510;--ink:#f1e7d6;--ink2:#dacfba;--muted:#bcae96;
  --line:#3a2e22;--line-soft:#2a2118;--accent:#f2a866;--accent-ink:#1c0f00;--dot-dim:#43362a;--spec-bg:#0f0a07;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#130e0a;--bg2:#1a130e;--card:#1c1510;--ink:#f1e7d6;--ink2:#dacfba;--muted:#bcae96;
  --line:#3a2e22;--line-soft:#2a2118;--accent:#f2a866;--accent-ink:#1c0f00;--dot-dim:#43362a;--spec-bg:#0f0a07;color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.1rem/1.65 var(--serif);text-rendering:optimizeLegibility;font-variant-numeric:lining-nums}
a{color:var(--accent);text-underline-offset:.15em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:.5rem 1rem;z-index:60}
.skip:focus{left:8px;top:8px}
section{scroll-margin-top:calc(var(--bar) + 8px)}
h1,h2,h3{font-family:var(--serif);line-height:1.12;margin:0;text-wrap:balance}
button{font:inherit}
.num{font-variant-numeric:tabular-nums lining-nums}

.topbar{position:sticky;top:0;z-index:40;height:var(--bar);display:flex;align-items:center;gap:.7rem;padding:0 max(16px,env(safe-area-inset-left));
  background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-soft);font:500 .9rem/1 var(--sans)}
.home{min-width:0;display:inline-flex;align-items:center;gap:.45rem;color:var(--ink);text-decoration:none;white-space:nowrap;font-weight:700}
.home-ico{color:var(--accent)}
.topnav{display:flex;gap:.9rem;overflow-x:auto;scrollbar-width:none;min-width:0}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--ink2);text-decoration:none;white-space:nowrap;padding:.9rem .1rem}
.topnav a:hover,.topnav a[aria-current="true"]{color:var(--accent)}
.spacer{flex:1}
.chip{flex:none;display:inline-flex;align-items:center;min-height:32px;padding:0 .7rem;border:1px solid var(--line);border-radius:999px;color:var(--ink);text-decoration:none;font-weight:600}
.icon-btn{flex:none;width:34px;height:34px;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);cursor:pointer}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:3px;pointer-events:none}
.progress span{display:block;height:100%;width:100%;transform-origin:left;transform:scaleX(0);background:var(--accent)}
.progress .trunk{position:absolute;top:-9px;left:0;color:var(--accent);transform:translateX(0);will-change:transform}
@media (max-width:860px){.topnav{display:none}.chip{min-height:44px}.icon-btn{width:44px;height:44px}}
@media (pointer:coarse){.chip,.icon-btn{min-height:44px;min-width:44px}.icon-btn{width:44px;height:44px}}

/* hero: a real photograph, always dark-scrimmed so the type keeps its contrast in both themes */
.hero{position:relative;isolation:isolate;min-height:calc(100svh - var(--bar));display:flex;align-items:flex-end;background:#120c07;color:#fff6e8;overflow:hidden}
.hero picture,.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 40%;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(to top,rgba(14,9,5,.96) 0,rgba(14,9,5,.86) 34%,rgba(14,9,5,.35) 66%,rgba(14,9,5,.12) 100%)}
.hero-in{width:100%;max-width:62rem;margin:0 auto;padding:6rem 20px 2.4rem}
.kicker{font:700 .8rem/1.2 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:#ffdcb0;margin:0 0 .7rem;text-shadow:0 1px 8px rgba(0,0,0,.85)}
.hero h1{font-size:clamp(2.1rem,6.4vw,4.3rem);font-weight:600;letter-spacing:-.015em;max-width:15em;text-shadow:0 2px 18px rgba(0,0,0,.6)}
.deck{font-size:clamp(1.08rem,2.6vw,1.34rem);color:#f3e6d2;max-width:36em;margin:1rem 0 1.4rem;text-shadow:0 1px 10px rgba(0,0,0,.7)}
.herocap{font:400 .78rem/1.4 var(--sans);color:#e7d8c2;margin:1.4rem 0 0;text-shadow:0 1px 4px rgba(0,0,0,.8)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:0 1.3rem;border:2px solid var(--accent);border-radius:999px;background:var(--accent);color:var(--accent-ink);font:700 1rem/1 var(--sans);cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink)}
.btn:hover{filter:brightness(1.08)}
.hero .btn{background:#ffc88f;border-color:#ffc88f;color:#2a1608}
.hero .btn .arr{font-size:1.2em}
@media (max-width:560px){.hero-in{padding:5rem 16px 1.6rem}.hero img{object-position:58% 35%}}

main{display:block}
.s{max-width:46rem;margin:0 auto;padding:3.8rem 16px 0}
.s.wide{max-width:62rem}
.s h2{font-size:clamp(1.65rem,4.6vw,2.4rem);margin-bottom:1rem}
.s h2 .anchor{color:inherit;text-decoration:none}
.s h2 .anchor:hover{text-decoration:underline}
.s h3{font-size:1.25rem;margin:1.8rem 0 .5rem}
.s p{margin:.9rem 0}
.s.wide>p,.s.wide>h2,.s.wide>h3{max-width:46rem;margin-left:auto;margin-right:auto}
.note{font:400 .88rem/1.5 var(--sans);color:var(--muted)}
.lab{font:700 .78rem/1.2 var(--sans);letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}

/* the listening scene: always dark */
.scene{max-width:80rem;margin:0 auto;padding:3rem 12px 0}
.scene h2{font-size:clamp(1.65rem,4.6vw,2.4rem);margin:0 auto 1rem;max-width:46rem;padding:0 4px}
.stage{position:relative;background:#120c07;border-radius:14px;overflow:hidden;aspect-ratio:16/9;max-height:58vh;min-height:320px;width:100%;margin:0 auto;border:1px solid var(--line)}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.stage img.fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stage .mute{position:absolute;right:10px;top:10px;z-index:3;min-width:44px;min-height:44px;border-radius:999px;border:1px solid rgba(255,240,215,.4);background:rgba(18,12,7,.6);color:#fff3df;cursor:pointer;display:inline-grid;place-items:center}
.stage .mute[hidden]{display:none}
.panel{max-width:46rem;margin:1rem auto 0;padding:1rem 1.1rem 1.1rem;background:var(--card);border:1px solid var(--line);border-radius:12px}
.panel .say{font-size:1.2rem;line-height:1.5;margin:0;min-height:4.6em}
.ctl{display:flex;flex-wrap:wrap;gap:.6rem .8rem;margin:.8rem 0 0;align-items:center}
.ctl .btn.ghost{border-color:var(--line);color:var(--ink)}
.spec{margin:1rem 0 0;border-top:1px solid var(--line-soft);padding-top:.9rem}
.spec canvas{display:block;width:100%;height:170px;background:var(--spec-bg);border-radius:8px}
.spec .lab{margin:0 0 .4rem}
.scene figcaption,.scenecap{font:400 .84rem/1.5 var(--sans);color:var(--muted);max-width:46rem;margin:.7rem auto 0;padding:0 4px}
.sound-note{display:block;margin-top:.6rem}

/* figures */
.fig{margin:1.6rem 0}
.fig img{display:block;width:100%;height:auto;border-radius:10px;background:var(--bg2)}
.fig figcaption{font:400 .84rem/1.45 var(--sans);color:var(--muted);margin-top:.45rem}
.figrow{display:grid;gap:1rem;grid-template-columns:repeat(2,minmax(0,1fr));max-width:62rem;margin:1.4rem auto 0}
.figrow .fig{margin:0}
@media (max-width:640px){.figrow{grid-template-columns:1fr}}
.callist{list-style:none;margin:1rem 0 0;padding:0;display:grid;gap:.6rem}
.callist li{padding:.8rem 1rem;border:1px solid var(--line);border-radius:10px;background:var(--card)}
.callist b{font:700 1rem/1.3 var(--sans);display:block;margin-bottom:.15rem}
.callist span{font:400 .98rem/1.5 var(--sans);color:var(--ink2)}

/* dots */
.dots{margin:1.4rem auto;max-width:46rem}
.dots svg{display:block;width:100%;height:auto}
.dot{fill:none;stroke:var(--dot-dim);stroke-width:1.6}
.dot.lit{fill:var(--accent);stroke:var(--accent)}
.dot.half{fill:url(#half);stroke:var(--accent)}
.dots.in .dot.lit{animation:pop .5s both;animation-delay:calc(var(--i)*14ms)}
@keyframes pop{from{fill:transparent;stroke:var(--dot-dim)}}
@media (prefers-reduced-motion:reduce){.dots.in .dot.lit{animation:none}}
.dgrp{margin:1.2rem 0 0}
.dgrp:first-child{margin-top:0}
.dlab{display:flex;justify-content:space-between;gap:1rem;font:600 .98rem/1.3 var(--sans);margin:0 0 .35rem;color:var(--ink)}
.dlab span{color:var(--ink2);font-weight:500}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.4rem;max-width:30rem}
.pair .dot-big{font:700 2.2rem/1 var(--serif);margin:.4rem 0 0}
.pair .lab{display:block;margin-bottom:.4rem}
.pair .cap{font:400 .88rem/1.35 var(--sans);color:var(--muted);margin:.2rem 0 0}
.leg{font:400 .88rem/1.4 var(--sans);color:var(--muted);margin:.8rem 0 0}

.scalesvg{display:block;width:100%;height:auto;max-width:46rem;margin:1.2rem auto;color:var(--ink)}
.scalesvg .ax{stroke:var(--ink2);stroke-width:2}
.scalesvg .band{fill:var(--accent);opacity:.2}
.scalesvg .t50{stroke:var(--accent);stroke-width:2;stroke-dasharray:5 4}
.scalesvg text{font:600 13px var(--sans);fill:var(--ink)}
.scalesvg .acc{fill:var(--accent)}

blockquote{max-width:46rem;margin-left:auto!important;margin-right:auto!important;margin-top:1.1rem;margin-bottom:1.1rem;padding:.3rem 0 .3rem 1rem;border-left:3px solid var(--accent);color:var(--ink)}
blockquote p{margin:.2rem 0}
blockquote cite{display:block;font:600 .88rem/1.4 var(--sans);color:var(--muted);font-style:normal;margin-top:.3rem}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:1rem 0}
table{border-collapse:collapse;width:100%;font:400 .96rem/1.45 var(--sans)}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--line-soft);vertical-align:top}
thead th{font:700 .78rem/1.2 var(--sans);letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
th[scope=row]{font-weight:700;color:var(--ink)}
.real{list-style:none;margin:1rem 0;padding:0;display:grid;gap:.6rem}
.real li{display:grid;grid-template-columns:7.2rem minmax(0,1fr);gap:.8rem;font:400 .98rem/1.5 var(--sans);color:var(--ink2);padding:.7rem 0;border-bottom:1px solid var(--line-soft)}
.real b{font:700 .78rem/1.5 var(--sans);letter-spacing:.05em;text-transform:uppercase;color:var(--accent)}
@media (max-width:560px){.real li{grid-template-columns:1fr;gap:.1rem}}
.src{margin:.6rem 0;padding-left:1.1rem;font:400 .98rem/1.55 var(--sans)}
.endline{font-size:1.3rem;line-height:1.5;margin:2.2rem 0 0}

.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;max-width:46rem;margin:3rem auto 0;padding:0 16px}
.share-label{font:600 .86rem/1 var(--sans);color:var(--muted);margin-right:.3rem}
.sh{width:40px;height:40px;display:inline-grid;place-items:center;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);cursor:pointer;text-decoration:none}
.sh:hover,.sh:focus-visible{color:var(--accent);border-color:var(--accent)}
@media (pointer:coarse){.sh{width:44px;height:44px}}
.copied{flex-basis:100%;font:500 .86rem/1.3 var(--sans);color:var(--ink2);min-height:1.2em;margin:0}
.foot{max-width:46rem;margin:3rem auto 0;padding:1.4rem 16px 3rem;border-top:1px solid var(--line-soft);font:400 .9rem/1.5 var(--sans);color:var(--muted)}
.foot p{margin:.3rem 0}
body.nf main{max-width:36rem;margin:20vh auto;padding:0 16px}

@media (max-width:640px){.stage{aspect-ratio:4/5;max-height:none;min-height:0}.panel .say{min-height:6.2em;font-size:1.12rem}.scene{padding-top:2rem}}