/* Paskorenuvi — registration-marks
   vápno, azur, terakota */

:root{
  --paper:#f5f4f0;
  --paper-alt:#e2ded4;
  --deep:#14456b;
  --ink:#1c1e20;
  --muted:#6a6d6e;
  --acc:#c2522f;
  --acc2:#1d6b8f;
  --gap:24px;
  --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(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}

img,svg{max-width:100%;}

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;}

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

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

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

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

.reg{
  position:absolute;
  width:22px;
  height:22px;
  pointer-events:none;
}
.reg::before,
.reg::after{
  content:"";
  position:absolute;
  background:var(--acc2);
}
.reg::before{left:0;top:10px;width:22px;height:1px;}
.reg::after{top:0;left:10px;width:1px;height:22px;}
.reg--tl{left:-11px;top:-11px;}
.reg--tr{right:-11px;top:-11px;}
.reg--bl{left:-11px;bottom:-11px;}
.reg--br{right:-11px;bottom:-11px;}
.reg--acc::before,.reg--acc::after{background:var(--acc);}

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

.rule{
  position:relative;
  height:8px;
  margin:0 0 34px;
  max-width:100%;
}
.rule::before,
.rule::after{
  content:"";
  position:absolute;
  left:0;
  height:2px;
  width:100%;
  background:var(--acc);
}
.rule::after{
  top:6px;
  left:24px;
  width:calc(100% - 24px);
  background:var(--acc2);
}

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

.site-head{
  padding:26px 0 22px;
  border-bottom:1px solid rgba(28,30,32,.16);
}
.site-head .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:14px 28px;
}
.brand{
  font-family:var(--serif);
  font-size:23px;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover{text-decoration:none;color:var(--acc);}
.brand span{color:var(--acc);}

.site-nav ul{
  display:flex;
  flex-wrap:wrap;
  gap:6px 22px;
  list-style:none;
  margin:0;
  padding:0;
  font-size:15px;
}
.site-nav a{color:var(--ink);text-decoration:none;padding-bottom:2px;border-bottom:1px solid transparent;}
.site-nav a:hover{border-bottom-color:var(--acc);}
.site-nav a[aria-current="page"]{border-bottom-color:var(--acc);color:var(--acc);}

/* ---------- typography ---------- */

h1,h2,h3{font-family:var(--serif);font-weight:400;color:var(--ink);}

h1{
  font-size:clamp(34px,5.4vw,62px);
  line-height:1.1;
  letter-spacing:-.01em;
  margin:0;
}
h2{
  font-size:clamp(21px,2.3vw,27px);
  line-height:1.3;
  margin:0 0 18px;
}
h3{
  font-size:18px;
  line-height:1.45;
  margin:30px 0 10px;
}
p{margin:0 0 20px;max-width:70ch;}

.lead{font-size:19px;line-height:1.7;}

.cap{
  font-size:12px;
  line-height:1.6;
  color:var(--muted);
  font-family:var(--sans);
  letter-spacing:.01em;
}

.snum{
  font-size:12px;
  color:var(--acc2);
  display:block;
  margin-bottom:10px;
  letter-spacing:.06em;
}

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

.hero{padding:66px 0 var(--step);}
.hero-inner{position:relative;padding:34px 0;}

.hero h1{grid-column:1 / span 9;position:relative;}
.hero h1 .line2{position:relative;display:inline-block;}
.hero h1 .line2::after{
  content:"";
  position:absolute;
  left:-4px;
  right:-10px;
  bottom:.24em;
  height:2px;
  background:var(--acc);
}

.hero-cols{margin-top:46px;}
.hero-intro{grid-column:1 / span 5;}
.hero-intro p{margin-bottom:0;}
.hero-topics{grid-column:8 / span 5;}
.hero-topics h2{
  font-family:var(--sans);
  font-size:12px;
  color:var(--acc2);
  letter-spacing:.06em;
  margin-bottom:14px;
}

.sq{list-style:none;margin:0;padding:0;font-size:16px;line-height:1.75;}
.sq li{position:relative;padding-left:20px;margin-bottom:7px;}
.sq li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:7px;height:7px;
  background:var(--acc);
}

/* ---------- figures ---------- */

.figure-main{
  grid-column:3 / span 8;
  position:relative;
  margin:0;
}
.frame{position:relative;}
.frame .art{
  display:block;
  width:100%;
  height:auto;
  background:#fff;
  border:1px solid rgba(28,30,32,.18);
}
.figure-main figcaption{margin-top:12px;max-width:52ch;}

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

.sec{padding:0 0 var(--step);}
.sec-body{grid-column:1 / span 7;}
.o1 .sec-body{grid-column:1 / span 7;}
.o2 .sec-body{grid-column:2 / span 7;}
.o3 .sec-body{grid-column:3 / span 7;}
.o4 .sec-body{grid-column:4 / span 7;}

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

.checklist{list-style:none;margin:22px 0 0;padding:0;}
.checklist li{
  position:relative;
  padding-left:26px;
  margin-bottom:11px;
  border-bottom:1px solid rgba(28,30,32,.1);
  padding-bottom:11px;
}
.checklist li:last-child{border-bottom:0;}
.checklist li::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:9px;height:9px;
  border:1px solid var(--acc);
}

.ol{padding-left:20px;margin:22px 0 0;}
.ol li{margin-bottom:12px;padding-left:6px;}
.ol li::marker{color:var(--acc2);}

/* ---------- alternating band ---------- */

.band{background:var(--paper-alt);padding:var(--step) 0;margin-bottom:var(--step);}
.band .sec{padding-bottom:0;}

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

.deep{
  background:var(--deep);
  color:var(--paper);
  padding:var(--step) 0;
  margin-bottom:var(--step);
}
.deep h2,.deep h3{color:var(--paper);}
.deep .cap{color:#b9cbd9;}
.deep .snum{color:#8fb8d2;}
.deep a{color:#f0b39c;}
.deep .rule::before{background:var(--acc);}
.deep .rule::after{background:#8fb8d2;}
.deep .sq li::before{background:var(--acc);}

.figure-detail{
  grid-column:1 / span 4;
  margin:0;
  position:relative;
}
.figure-detail .art{background:var(--paper);border:1px solid rgba(245,244,240,.25);}
.figure-detail figcaption{margin-top:12px;}
.deep-text{grid-column:6 / span 6;}
.deep-text p:last-child{margin-bottom:0;}

/* ---------- contact block ---------- */

.contact-block{grid-column:2 / span 7;}
.mailline{font-family:var(--serif);font-size:clamp(20px,2.4vw,26px);}

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

.page-head{padding:60px 0 44px;}
.page-head h1{grid-column:1 / span 9;}
.page-head .lead{grid-column:1 / span 7;margin-top:26px;}

.doc{padding-bottom:var(--step);}
.doc-marks{
  grid-column:1 / span 2;
  position:relative;
}
.doc-marks .reg{position:static;display:block;margin:0 0 62px;}
.doc-body{grid-column:3 / span 7;}
.doc-body section{margin-bottom:46px;}
.doc-body section:last-child{margin-bottom:0;}

.legal .doc-body{grid-column:2 / span 8;}
.legal .doc-marks{grid-column:1 / span 1;}

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

.site-foot{
  background:var(--deep);
  color:var(--paper);
  padding:56px 0 48px;
}
.site-foot .rule{margin-bottom:38px;}
.site-foot .rule::before{background:var(--acc);}
.site-foot .rule::after{background:#8fb8d2;}
.foot-a{grid-column:1 / span 7;}
.foot-b{grid-column:8 / span 5;}
.foot-a .brandline{font-family:var(--serif);font-size:22px;margin:0 0 12px;}
.foot-a p{color:#cddbe6;max-width:46ch;margin:0;font-size:15px;line-height:1.7;}
.foot-b ul{list-style:none;margin:0 0 18px;padding:0;font-size:15px;line-height:2;}
.foot-b a{color:var(--paper);text-decoration:none;border-bottom:1px solid rgba(245,244,240,.35);}
.foot-b a:hover{border-bottom-color:var(--acc);color:#f0b39c;}
.foot-mail{font-size:15px;}
.foot-mail a{color:#f0b39c;}
.foot-note{grid-column:1 / span 12;margin-top:38px;padding-top:18px;border-top:1px solid rgba(245,244,240,.22);color:#a9c0d0;font-size:12px;}

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

@media (max-width:900px){
  :root{--step:56px;}
  .hero h1,
  .hero-intro,
  .hero-topics,
  .figure-main,
  .sec-body,
  .o1 .sec-body,.o2 .sec-body,.o3 .sec-body,.o4 .sec-body,
  .figure-detail,.deep-text,
  .contact-block,
  .page-head h1,.page-head .lead,
  .doc-body,.legal .doc-body,
  .foot-a,.foot-b{grid-column:1 / -1;}
  .doc-marks,.legal .doc-marks{display:none;}
  .hero-topics{margin-top:34px;}
  .deep-text{margin-top:34px;}
  .figure-detail{max-width:420px;}
}

@media (max-width:600px){
  :root{--step:50px;}
  body{font-size:16px;}
  .hero{padding-top:40px;}
  .site-head .wrap{flex-direction:column;align-items:flex-start;}
  .site-nav ul{gap:6px 16px;font-size:14px;}
  .wrap{padding:0 20px;}
  .rule::after{left:16px;width:calc(100% - 16px);}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}