:root{
  --paper:#f2ebe0;
  --paper-alt:#e7d9c6;
  --dark:#4a2c1e;
  --ink:#241a14;
  --ink-soft:#6e5b4c;
  --accent:#c05a2b;
  --sage:#6b7a5a;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.72;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}

a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* ---------- grid ---------- */
.wrap{
  width:100%;
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:0 24px;
}

/* ---------- typography ---------- */
h1,h2,h3{font-family:var(--serif);font-weight:400;text-transform:none;letter-spacing:0;}
h1{
  font-size:clamp(2rem,4.6vw,3.2rem);
  line-height:1.16;
  margin:0 0 28px;
}
h2{
  font-size:clamp(1.5rem,2.6vw,2.05rem);
  line-height:1.25;
  margin:0 0 20px;
}
h3{
  font-family:var(--serif);
  font-style:italic;
  font-size:1.24rem;
  line-height:1.4;
  margin:34px 0 12px;
}
p{margin:0 0 18px;}
.lede{font-size:1.09rem;color:var(--ink);}
.meta{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sage);
  margin:0 0 14px;
}
.num{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--sage);
  display:block;
  margin-bottom:10px;
}
.soft{color:var(--ink-soft);}

/* ---------- header / nav ---------- */
.site-head{
  border-bottom:1px solid rgba(110,91,76,.28);
  padding:22px 0 20px;
  text-align:center;
}
.brand{
  font-family:var(--serif);
  font-size:1.32rem;
  letter-spacing:.04em;
  color:var(--ink);
  text-decoration:none;
  display:inline-block;
}
.brand:hover{text-decoration:none;color:var(--accent);}
.brand span{
  display:block;
  font-family:var(--sans);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--sage);
  margin-top:6px;
}
.site-nav{margin-top:18px;}
.site-nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:6px 0;
}
.site-nav li+li::before{
  content:"·";
  color:var(--sage);
  padding:0 12px;
}
.site-nav a{
  font-size:14px;
  letter-spacing:.05em;
  color:var(--ink);
  text-decoration:none;
  padding:2px 0;
  border-bottom:1px solid transparent;
}
.site-nav a:hover,.site-nav a[aria-current="page"]{
  color:var(--accent);
  border-bottom-color:var(--accent);
}

/* ---------- axis hero ---------- */
.hero{
  position:relative;
  padding:72px 0 80px;
  text-align:center;
}
.hero::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:1px;
  background:linear-gradient(to bottom,rgba(192,90,43,0),var(--accent) 18%,var(--accent) 82%,rgba(192,90,43,0));
  opacity:.55;
}
.hero .wrap{position:relative;}
.hero h1{
  max-width:20ch;
  margin-left:auto;
  margin-right:auto;
}
.hero-lede{
  grid-column:4 / span 6;
  color:var(--ink-soft);
  font-size:1.06rem;
}
.hero-flanks{
  margin-top:52px;
  align-items:start;
}
.flank{
  text-align:left;
  font-size:15px;
  line-height:1.68;
  color:var(--ink-soft);
}
.flank-l{grid-column:2 / span 3;}
.flank-r{grid-column:9 / span 3;}
.flank p{margin:0;}

/* ---------- figures ---------- */
.fig-axis{
  margin:0 auto;
  max-width:680px;
  text-align:center;
  padding:8px 0 0;
}
.fig-axis img{margin:0 auto;}
figcaption{
  font-size:13px;
  line-height:1.6;
  color:var(--ink-soft);
  margin-top:12px;
}
.fig-axis figcaption{text-align:center;max-width:52ch;margin-left:auto;margin-right:auto;}

/* ---------- sections ---------- */
.sec{padding:64px 0;}
.sec-lg{padding:80px 0;}
.sec-xl{padding:96px 0;}
.sec-alt{background:var(--paper-alt);}
.sec-dark{
  background:var(--dark);
  color:var(--paper);
  padding:96px 0;
}
.sec-dark h2,.sec-dark h3{color:var(--paper);}
.sec-dark .meta,.sec-dark .num{color:#c9b79f;}
.sec-dark figcaption{color:#d6c6b1;}
.sec-dark a{color:#e79a6c;}

.sec-head{text-align:center;max-width:34ch;margin:0 auto 40px;}

/* symmetric pair around the axis */
.pair{position:relative;}
.pair::before{
  content:"";
  position:absolute;
  top:6px;bottom:6px;left:50%;
  width:1px;
  background:rgba(110,91,76,.3);
}
.pair-l{grid-column:2 / span 4;}
.pair-r{grid-column:8 / span 4;}
.pair h3{margin-top:0;}

/* deliberately asymmetric narrative block */
.narrow{grid-column:1 / span 7;}
.center6{grid-column:4 / span 6;}
.center8{grid-column:3 / span 8;}

/* ---------- arc separator ---------- */
.arc{
  width:33.333%;
  min-width:220px;
  max-width:360px;
  height:34px;
  margin:0 auto;
  border-top:1px solid var(--accent);
  border-left:1px solid rgba(192,90,43,.35);
  border-right:1px solid rgba(192,90,43,.35);
  border-radius:200px 200px 0 0;
  opacity:.8;
}
.arc-sage{border-top-color:var(--sage);border-left-color:rgba(107,122,90,.35);border-right-color:rgba(107,122,90,.35);}
.sec-dark .arc{border-top-color:#e79a6c;border-left-color:rgba(231,154,108,.3);border-right-color:rgba(231,154,108,.3);}

/* ---------- lists ---------- */
ul.check,ol.steps{padding-left:0;list-style:none;margin:0 0 20px;}
ul.check li{
  position:relative;
  padding-left:24px;
  margin-bottom:11px;
}
ul.check li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:9px;height:1px;
  background:var(--accent);
}
ol.steps{counter-reset:s;}
ol.steps li{
  position:relative;
  padding-left:38px;
  margin-bottom:13px;
  counter-increment:s;
}
ol.steps li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;
  left:0;top:.15em;
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--sage);
}
.sec-dark ul.check li::before{background:#e79a6c;}

dl.gloss{margin:0;}
dl.gloss dt{
  font-family:var(--serif);
  font-style:italic;
  font-size:1.08rem;
  margin-top:20px;
}
dl.gloss dd{margin:4px 0 0;color:var(--ink-soft);}

/* ---------- dark detail block ---------- */
.detail-grid{align-items:center;row-gap:40px;}
.detail-fig{grid-column:2 / span 4;margin:0;}
.detail-text{grid-column:7 / span 5;}

/* ---------- about ---------- */
.page-head{
  text-align:center;
  padding:64px 0 8px;
  position:relative;
}
.page-head::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:1px;
  background:rgba(192,90,43,.4);
}
.page-head .wrap{position:relative;}
.page-head h1{max-width:22ch;margin-left:auto;margin-right:auto;}
.page-head p{max-width:60ch;margin:0 auto;color:var(--ink-soft);}

.prose{grid-column:4 / span 6;}
.prose h2{margin-top:44px;}
.prose h2:first-child{margin-top:0;}
.prose-wide{grid-column:3 / span 8;}

/* ---------- footer ---------- */
.site-foot{
  background:var(--paper-alt);
  padding:56px 0 48px;
  text-align:center;
  margin-top:0;
}
.site-foot .arc{margin-bottom:32px;}
.foot-name{
  font-family:var(--serif);
  font-size:1.28rem;
  margin:0 0 18px;
}
.foot-nav ul{
  list-style:none;
  margin:0 0 22px;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:6px 0;
}
.foot-nav li+li::before{content:"·";color:var(--sage);padding:0 12px;}
.foot-nav a{font-size:14px;color:var(--ink);text-decoration:none;border-bottom:1px solid rgba(192,90,43,.5);}
.foot-nav a:hover{color:var(--accent);}
.foot-mail{margin:0 0 10px;font-size:15px;}
.foot-note{
  margin:0 auto;
  max-width:56ch;
  font-size:13px;
  line-height:1.65;
  color:var(--ink-soft);
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-lede,.center6,.center8,.narrow,.prose,.prose-wide{grid-column:1 / -1;}
  .pair-l,.pair-r{grid-column:1 / -1;}
  .pair::before{display:none;}
  .pair-r{margin-top:32px;padding-top:32px;border-top:1px solid rgba(110,91,76,.3);}
  .flank-l{grid-column:1 / span 6;}
  .flank-r{grid-column:7 / span 6;}
  .detail-fig,.detail-text{grid-column:1 / -1;}
  .detail-fig{max-width:420px;}
}

@media (max-width:640px){
  body{font-size:16px;line-height:1.7;}
  .wrap{padding:0 18px;}
  .hero{padding:44px 0 48px;}
  .hero::before,.page-head::before{opacity:.35;}
  .sec{padding:40px 0;}
  .sec-lg{padding:48px 0;}
  .sec-xl,.sec-dark{padding:56px 0;}
  .page-head{padding:40px 0 4px;}
  .flank-l,.flank-r{grid-column:1 / -1;}
  .flank-r{margin-top:20px;}
  .hero-flanks{margin-top:34px;}
  .site-nav ul,.foot-nav ul{gap:4px 0;}
  .site-nav li+li::before,.foot-nav li+li::before{padding:0 8px;}
  .arc{min-width:0;width:60%;height:26px;}
}