:root{
  --bg:#f0eef4;
  --bg-alt:#e2dfea;
  --bg-dark:#241f2e;
  --ink:#1d1a24;
  --ink-soft:#6a6577;
  --ink-invert:#f0eef4;
  --accent:#5a4c8c;
  --ochre:#a3762a;
  --maxw:1128px;
  --gap:24px;
}

*{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.7;
  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,
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

.dark a:focus-visible{outline-color:#c9bce9;}

/* ---------- layout ---------- */

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--gap);
}

/* axis */
.axis{
  position:relative;
}
.axis::before{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  left:50%;
  width:1px;
  background:linear-gradient(to bottom,rgba(90,76,140,0),rgba(90,76,140,.55) 12%,rgba(90,76,140,.55) 88%,rgba(90,76,140,0));
  pointer-events:none;
}

/* ---------- typography ---------- */

h1,h2,h3{margin:0 0 .6em;}

h1{
  font-size:clamp(2.2rem,6vw,4rem);
  line-height:1.06;
  letter-spacing:-.035em;
  font-weight:700;
  text-wrap:balance;
}

h2{
  font-size:clamp(1.35rem,2.7vw,1.9rem);
  line-height:1.25;
  letter-spacing:-.015em;
  font-weight:600;
}

h3{
  font-size:1.08rem;
  line-height:1.4;
  font-weight:600;
  letter-spacing:-.005em;
}

p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}

.lead{font-size:1.12rem;line-height:1.65;}

.cap,figcaption{
  font-size:13px;
  line-height:1.55;
  color:var(--ink-soft);
}

.num{
  font-size:13px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ochre);
  font-weight:600;
  display:block;
  margin-bottom:14px;
}

.dark .num{color:#c79a4e;}
.dark .cap,.dark figcaption{color:#a8a2b8;}

/* ---------- header / nav ---------- */

.site-head{
  border-bottom:1px solid rgba(29,26,36,.12);
  background:var(--bg);
}

.site-head .wrap{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding-top:22px;
  padding-bottom:18px;
}

.brand{
  font-weight:700;
  font-size:1.15rem;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover{color:var(--accent);}

.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(--ochre);
  padding:0 12px;
}

.site-nav a{
  font-size:15px;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.site-nav a:hover{border-bottom-color:var(--accent);color:var(--accent);}
.site-nav a[aria-current="page"]{border-bottom-color:var(--ochre);}

/* ---------- hero ---------- */

.hero{
  padding:80px 0 96px;
  text-align:center;
}

.hero h1{
  grid-column:2 / 12;
  margin-bottom:26px;
}

.hero-lead{
  grid-column:4 / 10;
  color:var(--ink);
}

.hero-side{
  grid-column:span 3;
  text-align:left;
  font-size:15px;
  line-height:1.65;
  color:var(--ink-soft);
  padding-top:34px;
}

.hero-side:first-of-type{grid-column:2 / 5;}
.hero-side + .hero-side{grid-column:9 / 12;}

.hero-side h2{
  font-size:14px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ochre);
  margin-bottom:10px;
  font-weight:600;
}

/* ---------- figures ---------- */

.fig-main{
  margin:0 auto;
  max-width:680px;
  text-align:center;
}

.fig-main img{
  width:100%;
  border:1px solid rgba(29,26,36,.14);
}

.fig-main figcaption{
  margin-top:14px;
  text-align:center;
}

/* ---------- sections ---------- */

.s-64{padding:64px 0;}
.s-80{padding:80px 0;}
.s-96{padding:96px 0;}

.alt{background:var(--bg-alt);}

.dark{
  background:var(--bg-dark);
  color:var(--ink-invert);
}
.dark h1,.dark h2,.dark h3{color:var(--ink-invert);}
.dark a{color:#c1b2e8;}

/* symmetric pair 4+4 */
.pair{align-items:start;}
.pair .head{
  grid-column:2 / 12;
  text-align:center;
  margin-bottom:8px;
}
.pair .col-l{grid-column:2 / 6;}
.pair .col-r{grid-column:8 / 12;}

/* narrative offset block */
.narrative .body{grid-column:2 / 9;}
.narrative .head{grid-column:2 / 9;}

/* centered text column */
.center-col{grid-column:4 / 10;}
.center-head{grid-column:3 / 11;text-align:center;}

/* detail section inside dark */
.detail .fig{
  grid-column:2 / 6;
}
.detail .fig img{
  width:100%;
  border:1px solid rgba(240,238,244,.18);
}
.detail .txt{
  grid-column:7 / 12;
  align-self:center;
}

/* ---------- arc separator ---------- */

.arc{
  width:33.333%;
  min-width:180px;
  max-width:340px;
  height:26px;
  margin:0 auto;
  border-top:1px solid var(--ochre);
  border-left:1px solid rgba(163,118,42,.35);
  border-right:1px solid rgba(163,118,42,.35);
  border-radius:200px 200px 0 0;
}

.dark .arc{
  border-top-color:#c79a4e;
  border-left-color:rgba(199,154,78,.35);
  border-right-color:rgba(199,154,78,.35);
}

/* ---------- lists ---------- */

ul.check,ol.steps{
  margin:0 0 1.15em;
  padding-left:0;
  list-style:none;
}

ul.check li{
  position:relative;
  padding-left:26px;
  margin-bottom:11px;
}
ul.check li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:10px;
  height:1px;
  background:var(--accent);
}
.dark ul.check li::before{background:#c1b2e8;}

ol.steps{counter-reset:st;}
ol.steps li{
  position:relative;
  padding-left:36px;
  margin-bottom:14px;
  counter-increment:st;
}
ol.steps li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;
  left:0;
  top:0;
  font-size:13px;
  font-weight:700;
  color:var(--ochre);
  letter-spacing:.06em;
}

dl.terms{margin:0;}
dl.terms dt{font-weight:600;margin-top:18px;}
dl.terms dt:first-child{margin-top:0;}
dl.terms dd{margin:4px 0 0;color:var(--ink-soft);}

/* ---------- legal / article pages ---------- */

.page-head{
  padding:72px 0 40px;
  text-align:center;
}
.page-head h1{
  grid-column:2 / 12;
  font-size:clamp(1.9rem,4.4vw,2.9rem);
}
.page-head .sub{
  grid-column:4 / 10;
  color:var(--ink-soft);
  font-size:1.02rem;
}

.prose{grid-column:3 / 11;}
.prose h2{margin-top:2em;}
.prose h2:first-child{margin-top:0;}
.prose h3{margin-top:1.6em;}

/* ---------- footer ---------- */

.site-foot{
  background:var(--bg-alt);
  padding:0 0 56px;
  text-align:center;
}

.site-foot .arc{margin-bottom:40px;}
.foot-inner{padding-top:0;}

.foot-brand{
  font-weight:700;
  font-size:1.1rem;
  letter-spacing:.02em;
  margin-bottom:16px;
}

.foot-nav ul{
  list-style:none;
  margin:0 0 20px;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
}
.foot-nav li + li::before{
  content:"·";
  color:var(--ochre);
  padding:0 12px;
}
.foot-nav a{
  font-size:15px;
  color:var(--ink);
  text-decoration:none;
  border-bottom:1px solid transparent;
}
.foot-nav a:hover{border-bottom-color:var(--accent);color:var(--accent);}

.foot-mail{margin-bottom:10px;}

.foot-note{
  font-size:13px;
  color:var(--ink-soft);
  max-width:56ch;
  margin:0 auto;
}

/* ---------- responsive ---------- */

@media (max-width:900px){
  .hero{padding:56px 0 56px;}
  .hero h1{grid-column:1 / -1;}
  .hero-lead{grid-column:1 / -1;}
  .hero-side,
  .hero-side:first-of-type,
  .hero-side + .hero-side{grid-column:span 6;padding-top:26px;}

  .pair .head,.pair .col-l,.pair .col-r{grid-column:1 / -1;}
  .pair .col-r{margin-top:8px;}
  .narrative .body,.narrative .head{grid-column:1 / -1;}
  .center-col,.center-head{grid-column:1 / -1;}
  .detail .fig,.detail .txt{grid-column:1 / -1;}
  .detail .txt{margin-top:26px;}
  .page-head h1,.page-head .sub,.prose{grid-column:1 / -1;}

  .s-64,.s-80,.s-96{padding:48px 0;}
  .page-head{padding:48px 0 28px;}
  .axis::before{display:none;}
}

@media (max-width:560px){
  body{font-size:16.5px;}
  .wrap{padding:0 18px;}
  .grid{gap:18px;}
  .hero-side,
  .hero-side:first-of-type,
  .hero-side + .hero-side{grid-column:1 / -1;}
  .s-64,.s-80,.s-96{padding:40px 0;}
  .site-nav li + li::before{padding:0 8px;}
  .foot-nav li + li::before{padding:0 8px;}
}