:root{
  --bg:#fbf9f5;
  --bg-alt:#e4e8e1;
  --bg-dark:#223129;
  --ink:#22201c;
  --ink-2:#797468;
  --ink-inv:#fbf9f5;
  --acc:#54684e;
  --acc-2:#a87c48;
  --mono:ui-monospace,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --gap:24px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

.wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 28px;
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:var(--gap);
}

a{color:var(--acc);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.dark :focus-visible{outline-color:#c8d3c2}
img{max-width:100%;height:auto;display:block}

/* ---------- typography ---------- */
h1,h2,h3,.eyebrow,.navlink,.tag,.num{
  font-family:var(--mono);
  text-transform:uppercase;
  font-weight:600;
}
h1{
  font-size:clamp(28px,4.4vw,50px);
  line-height:1.12;
  letter-spacing:0.01em;
  margin:0;
}
h2{
  font-size:clamp(17px,1.7vw,21px);
  letter-spacing:.13em;
  line-height:1.45;
  margin:0 0 18px;
}
h3{
  font-size:14px;
  letter-spacing:.13em;
  color:var(--acc);
  margin:32px 0 10px;
}
p{margin:0 0 20px}
.eyebrow{
  font-size:12px;
  letter-spacing:.24em;
  color:var(--acc-2);
  margin:0 0 12px;
}
.lead{font-size:19px;line-height:1.7}
.cap{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--ink-2);
  line-height:1.7;
}
.rule{
  height:1px;
  background:var(--acc);
  border:0;
  margin:0 0 30px;
  width:calc((100% - 11*var(--gap))/12*2 + var(--gap));
  max-width:180px;
}

/* ---------- header ---------- */
.site-head{padding:26px 0 0}
.site-head .grid{align-items:baseline;row-gap:14px}
.brand{
  grid-column:1/4;
  font-family:var(--mono);
  font-size:15px;
  letter-spacing:.28em;
  text-transform:uppercase;
  text-decoration:none;
  color:var(--ink);
}
.brand:hover{color:var(--acc)}
nav.main{grid-column:4/13;display:flex;flex-wrap:wrap;gap:26px;justify-content:flex-end}
.navlink{
  font-size:13px;
  letter-spacing:.16em;
  text-decoration:none;
  color:var(--ink-2);
}
.navlink:hover,.navlink[aria-current="page"]{color:var(--acc)}
.headline-rule{
  grid-column:1/6;
  height:1px;
  background:var(--acc);
  margin-top:22px;
}

/* ---------- hero ---------- */
.hero{padding:52px 0 64px}
.hero .grid{row-gap:34px}
.hero-title{grid-column:1/8}
.hero-title .l1{display:block;margin-left:calc((100% - 6*var(--gap))/7*2 + 2*var(--gap))}
.hero-title .l2{display:block}
.hero-list{grid-column:10/13;border-top:1px solid var(--acc-2)}
.hero-list ul{list-style:none;margin:0;padding:0}
.hero-list li{
  border-bottom:1px solid rgba(168,124,72,.45);
  padding:9px 0;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink-2);
}
.hero-intro{grid-column:1/7}

.figure-row{padding-bottom:64px}
.figure-row .grid{row-gap:20px;align-items:end}
.fig-cap{grid-column:1/4;align-self:end}
.fig-main{grid-column:8/13}
.fig-main .frame{border:1px solid var(--acc-2);padding:8px}

/* ---------- sections ---------- */
section{padding:64px 0}
.band-alt{background:var(--bg-alt)}
.dark{background:var(--bg-dark);color:var(--ink-inv)}
.dark h2{color:var(--ink-inv)}
.dark h3{color:#b9c7b2}
.dark .eyebrow{color:#c9a375}
.dark .cap{color:#a8b4a2}
.dark a{color:#c8d3c2}
.dark .rule{background:#8fa287}
.dark li::marker{color:#c9a375}

.col-text{grid-column:1/7}
.col-shift{grid-column:4/10}
.col-narrow{grid-column:1/7}

ul.checks,ul.plain{padding-left:20px;margin:0 0 20px}
ul.checks li,ul.plain li{margin-bottom:11px;padding-left:4px}
ul.checks li::marker{color:var(--acc)}
ol.steps{padding-left:22px;margin:0 0 20px}
ol.steps li{margin-bottom:11px;padding-left:4px}
ol.steps li::marker{font-family:var(--mono);font-size:13px;color:var(--acc-2)}

.dl{margin:0 0 20px}
.dl dt{font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--acc);margin-top:20px}
.dl dd{margin:6px 0 0}

/* detail block in dark section */
.detail .grid{row-gap:32px;align-items:start}
.detail .fig{grid-column:1/5}
.detail .fig .cap{margin-top:12px}
.detail .txt{grid-column:6/12}

/* ---------- about ---------- */
.page-head{padding:48px 0 8px}
.page-head .grid{row-gap:18px}
.page-head h1{grid-column:1/9;font-size:clamp(24px,3.2vw,36px)}
.page-head .sub{grid-column:1/7}
.doc{padding:24px 0 64px}
.doc .block{grid-column:1/7;margin-bottom:56px}
.doc .block:last-child{margin-bottom:0}
.doc .block h2{position:relative;padding-left:36px}
.doc .block h2::before{
  content:"";position:absolute;left:0;top:.72em;
  width:24px;height:1px;background:var(--acc);
}
.doc .block h3{padding-left:36px}
.doc .block p,.doc .block ul,.doc .block ol,.doc .block dl{padding-left:36px}

/* ---------- footer ---------- */
.site-foot{padding:0 0 56px}
.site-foot .topline{height:1px;background:var(--acc);margin-bottom:28px}
.site-foot .topline{width:calc((100% - 11*var(--gap))/12*5 + 4*var(--gap))}
.foot-brand{grid-column:1/6}
.foot-nav{grid-column:6/9;display:flex;flex-direction:column;gap:8px}
.foot-meta{grid-column:9/13}
.foot-brand .name{font-family:var(--mono);font-size:14px;letter-spacing:.28em;text-transform:uppercase}
.foot-brand p{margin-top:12px;color:var(--ink-2);font-size:15px;line-height:1.7}
.site-foot .grid{row-gap:28px}

/* ---------- responsive ---------- */
@media (max-width:900px){
  :root{--gap:18px}
  section{padding:48px 0}
  .brand{grid-column:1/13}
  nav.main{grid-column:1/13;justify-content:flex-start;gap:20px}
  .headline-rule{grid-column:1/9}
  .hero-title,.hero-intro,.col-text,.col-shift,.col-narrow,
  .page-head h1,.page-head .sub,.doc .block{grid-column:1/13}
  .hero-list{grid-column:1/13}
  .fig-main{grid-column:1/10}
  .fig-cap{grid-column:1/13}
  .detail .fig{grid-column:1/8}
  .detail .txt{grid-column:1/13}
  .foot-brand,.foot-nav,.foot-meta{grid-column:1/13}
  .rule{width:120px}
  .site-foot .topline{width:180px}
}
@media (max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  section{padding:40px 0}
  .hero{padding:36px 0 40px}
  .figure-row{padding-bottom:40px}
  .hero-title .l1{margin-left:0}
  .fig-main{grid-column:1/13}
  .detail .fig{grid-column:1/13}
  .doc .block{margin-bottom:44px}
  .doc .block h2{padding-left:0}
  .doc .block h2::before{display:none}
  .doc .block h3,.doc .block p,.doc .block ul,.doc .block ol,.doc .block dl{padding-left:0}
}