:root{
  --bg:#f4f5f7;
  --bg-alt:#ffffff;
  --bg-dark:#23262b;
  --ink:#16181d;
  --ink-soft:#656b75;
  --ink-inv:#f4f5f7;
  --blue:#2d5bd6;
  --gold:#c9a00f;
  --mono:ui-monospace,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --step:80px;
}

*{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:1180px;margin:0 auto;padding:0 32px;}
.grid{display:grid;grid-template-columns:repeat(12,1fr);column-gap:24px;}

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

a{color:var(--blue);text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration:none;}
a:focus-visible,
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;}

/* ---------- header ---------- */
.site-head{border-bottom:1px solid rgba(22,24,29,.12);background:var(--bg);}
.site-head .wrap{
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:12px 28px;padding-top:22px;padding-bottom:22px;
}
.brand{
  font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;
  font-size:15px;font-weight:700;color:var(--ink);text-decoration:none;
}
.brand:hover{color:var(--blue);}
.site-nav{margin-left:auto;}
.site-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin:0;padding:0;}
.site-nav a{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-soft);text-decoration:none;
  padding-bottom:2px;border-bottom:1px solid transparent;
}
.site-nav a:hover{color:var(--ink);border-bottom-color:var(--blue);}
.site-nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--gold);}

/* ---------- generic section ---------- */
.sec{padding:var(--step) 0;background:var(--bg);}
.sec--alt{background:var(--bg-alt);}
.sec--dark{background:var(--bg-dark);color:var(--ink-inv);}
.sec--dark .lead,
.sec--dark p{color:var(--ink-inv);}
.sec--dark .cap{color:#9aa1ab;}
.sec--dark h2{color:var(--ink-inv);}
.sec--dark a{color:#9db6f5;}

h1,h2,h3{font-family:var(--mono);text-transform:uppercase;margin:0;}
h1{
  grid-column:1/8;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.1;letter-spacing:.005em;font-weight:700;
}
h2{
  grid-column:1/4;
  font-size:15px;letter-spacing:.14em;line-height:1.5;font-weight:700;
  position:relative;padding-top:20px;
}
h2::before{
  content:"";position:absolute;top:0;left:0;
  width:8px;height:8px;background:var(--blue);
}
.sec--dark h2::before{background:var(--gold);}
h3{
  font-size:13.5px;letter-spacing:.13em;font-weight:700;
  margin:38px 0 10px;color:var(--ink);
}
.sec--dark h3{color:var(--ink-inv);}

.col-text{grid-column:4/11;}
.col-text>p:first-child{margin-top:0;}
.col-text p{margin:0 0 20px;}
.col-text>*:last-child{margin-bottom:0;}

.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);margin:0 0 16px;
}
.cap{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--ink-soft);line-height:1.6;text-transform:uppercase;
}

/* ---------- hero ---------- */
.hero{padding:calc(var(--step) + 16px) 0 var(--step);}
.hero .lead{
  grid-column:9/13;font-size:18px;line-height:1.7;margin:6px 0 0;color:var(--ink);
}
.hero .lead+p{grid-column:9/13;color:var(--ink-soft);font-size:16px;}
.axis{
  grid-column:1/8;position:relative;height:120px;margin-top:34px;
}
.axis-line{position:absolute;top:0;left:0;right:0;height:1px;background:var(--blue);}
.axis-drop{position:absolute;top:0;width:1px;background:var(--blue);}
.axis-drop::after{
  content:"";position:absolute;bottom:-7px;left:-3px;
  width:7px;height:7px;background:var(--blue);
}
.axis-drop--a{left:0;height:96px;}
.axis-drop--b{left:38%;height:52px;}
.axis-drop--c{left:71%;height:74px;}
.axis-drop--c,
.axis-drop--c::after{background:var(--gold);}

/* ---------- main image ---------- */
.figure-main{padding-bottom:var(--step);background:var(--bg);}
.figure-main figure{grid-column:4/13;margin:0;}
.figure-main figcaption{grid-column:1/4;align-self:end;padding-bottom:4px;}

/* ---------- dark detail block ---------- */
.detail-fig{grid-column:1/6;margin:0;}
.detail-fig figcaption{margin-top:14px;}
.detail-text{grid-column:7/13;}
.detail-text p{margin:0 0 20px;}
.detail-text>*:last-child{margin-bottom:0;}

/* ---------- lists ---------- */
ul.check,ul.plain,ol.steps{padding-left:0;list-style:none;margin:0 0 20px;}
ul.check li,ul.plain li{position:relative;padding-left:26px;margin-bottom:12px;}
ul.check li::before,ul.plain li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;background:var(--blue);
}
.sec--dark ul.check li::before{background:var(--gold);}
ol.steps{counter-reset:st;}
ol.steps li{position:relative;padding-left:38px;margin-bottom:14px;counter-increment:st;}
ol.steps li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--gold);
}
dl.terms{margin:0;}
dl.terms dt{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.12em;
  text-transform:uppercase;margin-top:26px;
}
dl.terms dd{margin:6px 0 0;}

.note{color:var(--ink-soft);font-size:16px;}

/* ---------- about layout ---------- */
.about-grid{position:relative;}
.about-grid .col-text{border-left:1px solid rgba(22,24,29,.16);padding-left:28px;grid-column:4/11;}

/* ---------- footer ---------- */
.site-foot{background:var(--bg-dark);color:var(--ink-inv);padding:56px 0 44px;}
.foot-top{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  align-items:baseline;gap:12px 24px;
}
.foot-name{
  font-family:var(--mono);text-transform:uppercase;letter-spacing:.18em;
  font-size:15px;font-weight:700;
}
.foot-mail a{color:var(--ink-inv);font-family:var(--mono);font-size:13px;letter-spacing:.06em;}
.foot-rule{height:1px;background:rgba(244,245,247,.22);margin:26px 0 22px;}
.foot-links ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px 26px;margin:0;padding:0;}
.foot-links a{
  color:#c7cbd2;font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;text-decoration:none;
}
.foot-links a:hover{color:var(--ink-inv);text-decoration:underline;}
.foot-note{color:#9aa1ab;font-size:15px;max-width:62ch;margin:22px 0 0;line-height:1.7;}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .col-text,h1,h2,.hero .lead,.hero .lead+p,.axis,
  .figure-main figure,.figure-main figcaption,
  .detail-fig,.detail-text,.about-grid .col-text{grid-column:1/13;}
  .hero .lead{margin-top:26px;}
  .detail-text{margin-top:32px;}
  .figure-main figcaption{margin-top:14px;}
  h2{margin-bottom:22px;}
  .about-grid .col-text{border-left:none;padding-left:0;
    border-top:1px solid rgba(22,24,29,.16);padding-top:22px;}
}
@media (max-width:640px){
  :root{--step:48px;}
  body{font-size:16px;}
  .wrap{padding:0 20px;}
  .axis{height:88px;margin-top:26px;}
  .axis-drop--a{height:66px;}
  .axis-drop--b{height:38px;}
  .axis-drop--c{height:52px;}
  .site-nav{margin-left:0;width:100%;}
}