/* Sepelme — stone-courses */

:root{
  --bg:#fbf9f5;
  --bg-alt:#e4e8e1;
  --bg-dark:#223129;
  --ink:#22201c;
  --ink-soft:#797468;
  --ink-inv:#fbf9f5;
  --accent:#54684e;
  --accent2:#a87c48;
  --mono:ui-monospace,Consolas,'Liberation Mono',monospace;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --gut:24px;
  --pad:clamp(20px,5vw,64px);
}

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

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;
}

.dark :focus-visible{outline-color:#c9d6c0;}

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

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:0 var(--gut);
  max-width:1360px;
  margin:0 auto;
}

/* ---------- layers (hero) ---------- */

.layer{padding-left:var(--pad);padding-right:var(--pad);}

.layer--nav{background:var(--bg-alt);padding-top:18px;padding-bottom:18px;}
.layer--title{background:var(--bg);padding-top:96px;padding-bottom:44px;}
.layer--lead{background:var(--bg-dark);color:var(--ink-inv);padding-top:64px;padding-bottom:64px;}

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

.nav-inner{
  max-width:1360px;margin:0 auto;
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:12px 28px;
}

.brand{
  font-family:var(--mono);
  text-transform:uppercase;
  letter-spacing:.22em;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  text-decoration:none;
  margin-right:auto;
}
.brand:hover{color:var(--accent);}

.nav-list{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:8px 22px;
}
.nav-list a{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-soft);
  text-decoration:none;
}
.nav-list a:hover,.nav-list a[aria-current="page"]{color:var(--accent);text-decoration:underline;text-underline-offset:5px;}

/* ---------- headings ---------- */

h1,h2,h3{
  font-family:var(--mono);
  text-transform:uppercase;
  font-weight:700;
  margin:0;
  color:inherit;
}

h1{
  font-size:clamp(28px,5.2vw,54px);
  line-height:1.14;
  letter-spacing:.055em;
  grid-column:1 / span 9;
  max-width:18ch;
}

.layer--title .grid{align-items:end;}

.kicker{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--accent2);
  grid-column:1 / -1;
  margin:0 0 26px;
}

h2{
  font-size:clamp(19px,2.3vw,25px);
  line-height:1.3;
  letter-spacing:.075em;
  margin:0 0 22px;
}

h3{
  font-size:15px;
  letter-spacing:.12em;
  line-height:1.45;
  margin:34px 0 10px;
  color:var(--accent);
}

.dark h3{color:#b7c9ad;}

.snum{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--accent2);
  display:block;
  margin-bottom:14px;
}

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

.lead{
  grid-column:1 / span 6;
  font-size:19px;
  line-height:1.7;
  margin:0;
}
.lead-topics{
  grid-column:8 / span 5;
  list-style:none;margin:6px 0 0;padding:0;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.09em;
  text-transform:uppercase;
  line-height:2.1;
  color:#c9d6c0;
}
.lead-topics li{border-top:1px solid rgba(251,249,245,.16);padding-top:6px;margin-bottom:6px;}

/* ---------- sections (stepped rhythm) ---------- */

.sec{
  padding:88px var(--pad) 88px;
  background:var(--bg);
}
.sec--alt{background:var(--bg-alt);}
.sec.dark{background:var(--bg-dark);color:var(--ink-inv);}
.dark a{color:#c9d6c0;}
.dark .snum{color:#c8a06a;}

.col{grid-column:1 / span 6;}
.step1 .col{grid-column:2 / span 6;}
.step2 .col{grid-column:3 / span 6;}
.step3 .col{grid-column:4 / span 6;}

.sec p{margin:0 0 20px;}
.sec p:last-child{margin-bottom:0;}

.muted{color:var(--ink-soft);}
.dark .muted{color:#a9b7a2;}

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

ul.marks,ol.steps{margin:16px 0 24px;padding:0;list-style:none;}
ul.marks li{position:relative;padding-left:24px;margin-bottom:11px;}
ul.marks li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:9px;height:2px;background:var(--accent);
}
.dark ul.marks li::before{background:#c8a06a;}

ol.steps{counter-reset:s;}
ol.steps li{position:relative;padding-left:38px;margin-bottom:13px;counter-increment:s;}
ol.steps li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;
  color:var(--accent2);
}

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

.figblock{padding:0 var(--pad) 88px;background:var(--bg);}
.figblock figure{grid-column:4 / span 9;margin:0;}
.figblock figcaption,.detail figcaption{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:var(--ink-soft);
  margin-top:12px;
  max-width:52ch;
  line-height:1.7;
}

/* ---------- detail block in dark section ---------- */

.detail{align-items:start;}
.detail figure{grid-column:1 / span 5;margin:0;}
.detail .detail-text{grid-column:7 / span 6;}
.detail figcaption{color:#a9b7a2;}

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

.site-footer{
  background:var(--bg-dark);
  color:var(--ink-inv);
  padding:72px var(--pad) 56px;
  margin-top:0;
}
.footer-name{
  font-family:var(--mono);
  text-transform:uppercase;
  letter-spacing:.06em;
  font-size:clamp(40px,11vw,140px);
  line-height:.94;
  margin:0 0 56px;
  grid-column:1 / -1;
  color:var(--ink-inv);
}
.fcol{grid-column:span 4;}
.fcol h2{
  font-size:11.5px;
  letter-spacing:.2em;
  color:#c8a06a;
  margin:0 0 14px;
  padding-top:14px;
  border-top:2px solid #c8a06a;
  display:inline-block;
}
.fcol ul{list-style:none;margin:0;padding:0;}
.fcol li{margin-bottom:7px;}
.fcol a{color:#dfe7d9;}
.fcol p{margin:0;font-size:15px;color:#a9b7a2;line-height:1.7;}

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

.about-sec{padding:76px var(--pad);}
.about-sec:nth-of-type(odd){background:var(--bg);}
.about-sec:nth-of-type(even){background:var(--bg-alt);}
.about-sec:nth-of-type(1) .col{grid-column:1 / span 6;}
.about-sec:nth-of-type(2) .col{grid-column:2 / span 6;}
.about-sec:nth-of-type(3) .col{grid-column:3 / span 6;}
.about-sec:nth-of-type(4) .col{grid-column:4 / span 6;}
.about-sec:nth-of-type(5) .col{grid-column:5 / span 6;}
.about-sec:nth-of-type(6) .col{grid-column:6 / span 6;}

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

.doc{padding:72px var(--pad) 88px;background:var(--bg);}
.doc .col{grid-column:2 / span 7;}
.doc h2{margin-top:44px;}
.doc h2:first-of-type{margin-top:0;}

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

@media (max-width:1000px){
  h1{grid-column:1 / -1;}
  .lead,.lead-topics{grid-column:1 / -1;}
  .lead-topics{margin-top:32px;}
  .col,.step1 .col,.step2 .col,.step3 .col,.doc .col{grid-column:1 / -1;}
  .about-sec .col{grid-column:1 / -1 !important;}
  .figblock figure{grid-column:1 / -1;}
  .detail figure{grid-column:1 / span 7;}
  .detail .detail-text{grid-column:1 / -1;margin-top:32px;}
  .fcol{grid-column:span 12;margin-bottom:30px;}
}

@media (max-width:620px){
  body{font-size:16px;}
  .layer--title{padding-top:56px;padding-bottom:32px;}
  .sec{padding-top:52px;padding-bottom:52px;}
  .figblock{padding-bottom:52px;}
  .about-sec,.doc{padding-top:52px;padding-bottom:52px;}
  .lead{font-size:17px;}
  .detail figure{grid-column:1 / -1;}
  .nav-list{gap:6px 16px;}
  .site-footer{padding-top:52px;}
}