/* Tivutako — registration-marks / dark forest + brass */

:root{
  --bg:#131c17;
  --bg-alt:#1a2620;
  --bg-contrast:#eaeee7;
  --text:#e4eae2;
  --text-dim:#8b9a8e;
  --text-contrast:#131c17;
  --brass:#c2a24d;
  --sage:#7fa88a;
  --step:84px;
  --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(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}

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

a{color:var(--brass);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(--brass);
  outline-offset:3px;
}

/* ---------- grid ---------- */

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

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:24px;
}

/* text column offsets, cycling every four blocks */
.c1{grid-column:1 / span 7}
.c2{grid-column:2 / span 7}
.c3{grid-column:3 / span 7}
.c4{grid-column:4 / span 7}

/* ---------- registration marks ---------- */

.mark{
  position:relative;
  width:18px;
  height:18px;
  flex:none;
}
.mark::before,
.mark::after{
  content:"";
  position:absolute;
  background:var(--sage);
}
.mark::before{left:0;right:0;top:50%;height:1px}
.mark::after{top:0;bottom:0;left:50%;width:1px}
.mark.brass::before,.mark.brass::after{background:var(--brass)}

/* ---------- separators ---------- */

.rule{
  margin:0 0 34px;
  max-width:520px;
}
.rule span{display:block;height:2px;background:var(--brass);width:100%}
.rule span + span{background:var(--sage);margin-top:6px;margin-left:24px;width:calc(100% - 24px)}

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

.site-head{
  border-bottom:1px solid rgba(139,154,142,.28);
  padding:22px 0;
}
.head-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px 28px;
}
.brand{
  font-family:var(--serif);
  font-size:23px;
  letter-spacing:.02em;
  color:var(--text);
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:12px;
}
.brand:hover{text-decoration:none;color:var(--brass)}
.site-nav ul{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px 26px;
  margin:0;
  padding:0;
}
.site-nav a{
  color:var(--text-dim);
  text-decoration:none;
  font-size:15px;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"]{
  color:var(--text);
  border-bottom-color:var(--brass);
}

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

.hero{
  position:relative;
  padding:var(--step) 0 calc(var(--step) - 20px);
}
.hero-frame{
  position:relative;
  padding:34px 0 10px;
}
.hero-frame > .mark{position:absolute}
.hero-frame > .mark:nth-of-type(1){top:0;left:-4px}
.hero-frame > .mark:nth-of-type(2){top:0;right:-4px}
.hero-frame > .mark:nth-of-type(3){bottom:0;left:-4px}
.hero-frame > .mark:nth-of-type(4){bottom:0;right:-4px}
.hero-frame::before,
.hero-frame::after{
  content:"";
  position:absolute;
  left:14px;right:14px;
  height:1px;
  background:rgba(139,154,142,.35);
}
.hero-frame::before{top:8px}
.hero-frame::after{bottom:8px}

.eyebrow{
  font-size:13px;
  color:var(--sage);
  letter-spacing:.08em;
  margin:0 0 20px;
}

h1{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(34px,5.2vw,62px);
  line-height:1.05;
  margin:0 0 30px;
  grid-column:1 / span 9;
  position:relative;
}
h1 .off{
  position:relative;
  display:inline-block;
}
h1 .off::after{
  content:"";
  position:absolute;
  left:0;right:0;
  bottom:.06em;
  height:2px;
  background:var(--brass);
  transform:translateY(5px);
}

.hero-lead{grid-column:1 / span 5;margin:0}
.hero-lead p{margin:0 0 18px}
.hero-list{grid-column:8 / span 4;margin:6px 0 0;padding:0;list-style:none}
.hero-list li{
  font-size:15px;
  line-height:1.6;
  color:var(--text-dim);
  padding-left:20px;
  position:relative;
  margin-bottom:12px;
}
.hero-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:7px;height:7px;
  background:var(--brass);
}

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

section{padding:var(--step) 0}
.band{background:var(--bg-alt)}

h2{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(24px,2.7vw,32px);
  line-height:1.15;
  margin:0 0 22px;
}
h3{
  font-family:var(--serif);
  font-weight:400;
  font-size:20px;
  line-height:1.3;
  margin:34px 0 12px;
}
p{margin:0 0 20px}
.sec-num{
  display:block;
  font-size:13px;
  color:var(--sage);
  margin:0 0 8px;
}

ul.list,ol.list{margin:0 0 22px;padding-left:0;list-style:none}
ul.list li,ol.list li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
}
ul.list li::before{
  content:"";
  position:absolute;left:0;top:.68em;
  width:7px;height:7px;background:var(--brass);
}
ol.list{counter-reset:n}
ol.list li{counter-increment:n}
ol.list li::before{
  content:counter(n,decimal-leading-zero);
  position:absolute;left:0;top:0;
  color:var(--sage);
  font-size:13px;
  line-height:2.3;
}

/* ---------- main image ---------- */

.figure-main{
  grid-column:3 / span 8;
  margin:0;
  position:relative;
}
.figure-main .frame{position:relative}
.figure-main .frame > .mark{position:absolute}
.figure-main .frame > .mark:nth-of-type(1){top:-9px;left:-9px}
.figure-main .frame > .mark:nth-of-type(2){top:-9px;right:-9px}
.figure-main .frame > .mark:nth-of-type(3){bottom:-9px;left:-9px}
.figure-main .frame > .mark:nth-of-type(4){bottom:-9px;right:-9px}
figcaption{
  font-size:13px;
  line-height:1.6;
  color:var(--text-dim);
  margin-top:14px;
  max-width:52ch;
}

/* ---------- contrast section ---------- */

.contrast{
  background:var(--bg-contrast);
  color:var(--text-contrast);
}
.contrast h2,.contrast h3{color:var(--text-contrast)}
.contrast .sec-num{color:#4d6b57}
.contrast figcaption{color:#4a5750}
.contrast a{color:#7a6118}
.contrast ul.list li::before{background:#9c7f28}
.contrast .rule span{background:#9c7f28}
.contrast .rule span + span{background:#4d6b57}

.detail-fig{grid-column:1 / span 4;margin:0}
.detail-text{grid-column:6 / span 6}
.detail-text h2{margin-top:0}

/* ---------- about page ---------- */

.about-body{grid-column:3 / span 7}
.about-marks{
  grid-column:1 / span 1;
  display:flex;
  flex-direction:column;
  gap:120px;
  padding-top:10px;
}

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

.site-foot{
  background:var(--bg-contrast);
  color:var(--text-contrast);
  padding:56px 0 44px;
}
.site-foot a{color:#7a6118}
.foot-rule{margin-bottom:34px;max-width:100%}
.foot-rule span{background:#9c7f28}
.foot-rule span + span{background:#4d6b57}
.foot-a{grid-column:1 / span 7}
.foot-b{grid-column:8 / span 5}
.foot-a .name{
  font-family:var(--serif);
  font-size:24px;
  margin:0 0 12px;
}
.foot-a p{margin:0;font-size:15px;color:#4a5750;max-width:46ch}
.foot-b ul{list-style:none;margin:0 0 16px;padding:0}
.foot-b li{margin-bottom:8px;font-size:15px}
.foot-mail{font-size:15px;margin:0}
.foot-note{
  grid-column:1 / span 12;
  margin-top:34px;
  font-size:13px;
  color:#4a5750;
}

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

@media (max-width:900px){
  :root{--step:60px}
  .c1,.c2,.c3,.c4,
  .hero-lead,.hero-list,.figure-main,
  .detail-fig,.detail-text,
  .about-body,.foot-a,.foot-b{grid-column:1 / -1}
  h1{grid-column:1 / -1}
  .hero-list{margin-top:26px}
  .about-marks{display:none}
  .detail-fig{max-width:420px;margin-bottom:32px}
}

@media (max-width:640px){
  :root{--step:50px}
  body{font-size:16px}
  .wrap{padding:0 20px}
  .head-inner{align-items:flex-start;flex-direction:column}
  .site-nav ul{gap:6px 18px}
  .rule{margin-bottom:26px}
  h3{margin-top:28px}
  .site-foot{padding:44px 0 36px}
}