:root{
  --bg:#e8e6e1;
  --bg-alt:#d3d0c9;
  --bg-dark:#2a2a28;
  --ink:#17171a;
  --ink-soft:#6a6862;
  --ink-invert:#e8e6e1;
  --accent:#8c4a2f;
  --accent2:#55707a;
  --step:84px;
  --gutter:24px;
}

*,*::before,*::after{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}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 28px;
}

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

/* ---------- registration mark ---------- */
.rmark{
  display:block;
  width:22px;
  height:22px;
  position:relative;
  background-image:radial-gradient(circle at center,transparent 4.5px,var(--accent2) 4.5px,var(--accent2) 6px,transparent 6.2px);
}
.rmark::before,.rmark::after{content:"";position:absolute;background:var(--accent2)}
.rmark::before{left:0;right:0;top:10px;height:2px}
.rmark::after{top:0;bottom:0;left:10px;width:2px}
.rmark.on-dark{background-image:radial-gradient(circle at center,transparent 4.5px,var(--accent) 4.5px,var(--accent) 6px,transparent 6.2px)}
.rmark.on-dark::before,.rmark.on-dark::after{background:var(--accent)}

/* ---------- header / nav ---------- */
.site-head{
  border-bottom:2px solid var(--ink);
  padding:20px 0 16px;
}
.head-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px 32px;
}
.brand{
  font-size:21px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink);
  text-decoration:none;
}
.brand span{color:var(--accent)}
.site-nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:6px 22px;
}
.site-nav a{
  font-size:15px;
  color:var(--ink);
  text-decoration:none;
  border-bottom:2px solid transparent;
  padding-bottom:2px;
}
.site-nav a:hover,.site-nav a[aria-current="page"]{border-bottom-color:var(--accent)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:64px 0 10px;
}
.hero-marks{position:absolute;top:34px;bottom:8px;left:50%;transform:translateX(-50%);width:min(100% - 56px,1124px);pointer-events:none}
.hero-marks .rmark{position:absolute}
.hero-marks .rmark:nth-child(1){top:0;left:0}
.hero-marks .rmark:nth-child(2){top:0;right:0}
.hero-marks .rmark:nth-child(3){bottom:0;left:0}
.hero-marks .rmark:nth-child(4){bottom:0;right:0}
.hero-marks::before,.hero-marks::after{
  content:"";position:absolute;left:11px;right:11px;height:1px;background:rgba(106,104,98,.5);
}
.hero-marks::before{top:10px}
.hero-marks::after{bottom:10px}

.eyebrow{
  grid-column:1/13;
  font-size:13px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--accent2);
  margin:0 0 26px;
}

h1{
  grid-column:1/10;
  position:relative;
  margin:0 0 34px;
  font-size:clamp(34px,5.4vw,62px);
  line-height:1.04;
  font-weight:700;
  letter-spacing:-.035em;
}
h1::after{
  content:"";
  position:absolute;
  left:-2%;
  width:64%;
  height:3px;
  background:var(--accent);
  bottom:.26em;
}

.hero-lede{grid-column:1/6;margin:0}
.hero-lede p{margin:0 0 16px}
.hero-list{grid-column:8/12}
.hero-list h2{
  font-size:13px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent2);
  font-weight:600;
  margin:6px 0 14px;
}
.hero-list ul{list-style:none;margin:0;padding:0;font-size:15px;line-height:1.55}
.hero-list li{position:relative;padding-left:20px;margin-bottom:10px;color:var(--ink)}
.hero-list li::before{content:"";position:absolute;left:0;top:.55em;width:8px;height:8px;background:var(--accent)}

/* ---------- rhythm & sections ---------- */
.sec{padding-top:var(--step)}
.band{background:var(--bg-alt);margin-top:var(--step);padding:var(--step) 0}
.band .sec:first-child{padding-top:0}
.dark{background:var(--bg-dark);color:var(--ink-invert);margin-top:var(--step);padding:var(--step) 0}
.dark h2,.dark h3{color:var(--ink-invert)}
.dark .cap{color:#a8a49c}
.dark a{color:#d99a7c}

/* offset-column text blocks */
.t1{grid-column:1/8}
.t2{grid-column:2/9}
.t3{grid-column:3/10}
.t4{grid-column:4/11}

h2{
  font-size:clamp(23px,2.6vw,31px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:-.02em;
  margin:0 0 18px;
}
h3{
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  margin:30px 0 10px;
}
p{margin:0 0 18px}
.snum{
  display:block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--accent2);
  margin-bottom:10px;
}

.sep{margin-top:var(--step);height:6px;position:relative}
.sep::before,.sep::after{content:"";position:absolute;height:2px;left:0;width:58%}
.sep::before{top:0;background:var(--accent)}
.sep::after{top:4px;left:24px;background:var(--accent2)}

/* lists */
ul.checks,ol.steps{padding-left:0;list-style:none;margin:0 0 18px}
ul.checks li{position:relative;padding-left:22px;margin-bottom:10px}
ul.checks li::before{content:"";position:absolute;left:0;top:.6em;width:7px;height:7px;background:var(--accent)}
ol.steps{counter-reset:s}
ol.steps li{position:relative;padding-left:34px;margin-bottom:11px;counter-increment:s}
ol.steps li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;left:0;top:.1em;
  font-size:13px;letter-spacing:.06em;color:var(--accent2);font-weight:700;
}
.dark ul.checks li::before{background:#d99a7c}
.dark ol.steps li::before{color:#9fb7bf}

/* ---------- figures ---------- */
.fig-main{grid-column:3/11;position:relative;padding:16px}
.fig-main .rmark{position:absolute}
.fig-main .rmark:nth-of-type(1){top:0;left:0}
.fig-main .rmark:nth-of-type(2){top:0;right:0}
.fig-main .rmark:nth-of-type(3){bottom:0;left:0}
.fig-main .rmark:nth-of-type(4){bottom:0;right:0}
.fig-main img{width:100%}
.cap{
  font-size:13px;
  line-height:1.5;
  color:var(--ink-soft);
  margin:12px 0 0;
  max-width:46ch;
}

.fig-detail{grid-column:1/6;margin:0;padding:0}
.fig-detail img{width:100%}
.detail-text{grid-column:7/13}

/* ---------- about page ---------- */
.about-body{grid-column:3/10;position:relative}
.about-rail{grid-column:1/3;position:relative}
.about-rail .rmark{margin:0 0 96px}
.about-rail .rmark:first-child{margin-top:8px}

/* ---------- legal pages ---------- */
.legal{grid-column:2/10}
.legal h2{margin-top:44px;font-size:clamp(21px,2.2vw,26px)}
.legal h2:first-of-type{margin-top:28px}

/* ---------- footer ---------- */
.site-foot{
  background:var(--bg-dark);
  color:var(--ink-invert);
  margin-top:var(--step);
  padding:38px 0 46px;
}
.foot-sep{height:6px;position:relative;margin-bottom:36px}
.foot-sep::before,.foot-sep::after{content:"";position:absolute;height:2px;left:0;width:52%}
.foot-sep::before{top:0;background:var(--accent)}
.foot-sep::after{top:4px;left:24px;background:var(--accent2)}
.foot-a{grid-column:1/8}
.foot-b{grid-column:8/13}
.foot-a .fname{font-size:20px;font-weight:700;letter-spacing:-.02em;margin:0 0 12px}
.foot-a p{font-size:15px;color:#a8a49c;margin:0 0 12px;max-width:52ch}
.foot-b h2{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);margin:4px 0 14px}
.foot-b ul{list-style:none;margin:0 0 16px;padding:0;font-size:15px;line-height:1.9}
.foot-b a{color:var(--ink-invert);text-decoration:none;border-bottom:1px solid rgba(140,74,47,.9)}
.foot-b a:hover{border-bottom-width:2px}
.foot-mail{font-size:15px;margin:0}
.foot-mail a{color:#d99a7c}

/* ---------- responsive ---------- */
@media (max-width:900px){
  :root{--step:58px}
  .hero-lede{grid-column:1/8}
  .hero-list{grid-column:8/13}
  .t1,.t2,.t3,.t4{grid-column:1/11}
  .fig-main{grid-column:1/12}
  .fig-detail{grid-column:1/6}
  .detail-text{grid-column:6/13}
  .about-body{grid-column:3/12}
  .legal{grid-column:1/12}
  .foot-a{grid-column:1/8}
  .foot-b{grid-column:8/13}
}

@media (max-width:640px){
  :root{--step:50px;--gutter:0px}
  body{font-size:16px}
  .wrap{padding:0 20px}
  .hero{padding:40px 0 6px}
  .grid>*{grid-column:1/13 !important}
  h1{font-size:clamp(30px,8.4vw,40px);margin-bottom:26px}
  h1::after{width:78%;height:2px}
  .hero-list{margin-top:22px}
  .fig-main{padding:14px}
  .fig-detail{margin-bottom:26px}
  .about-rail{display:flex;gap:18px;margin-bottom:22px}
  .about-rail .rmark{margin:0}
  .sep::before,.sep::after{width:84%}
  .foot-b{margin-top:30px}
  .foot-sep::before,.foot-sep::after{width:80%}
}