:root{
  --bg:#eef4f1;
  --bg-alt:#dfeae5;
  --bg-dark:#1c2a28;
  --ink:#16211f;
  --ink-soft:#5f7370;
  --ink-on-dark:#eef4f1;
  --soft-on-dark:#a9c2bc;
  --accent:#2f6f63;
  --accent-light:#9fd0c4;
  --accent2:#c25340;
  --accent2-light:#e08a76;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --rhythm:76px;
  --gap:24px;
}

*{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:1.8;
  overflow-x:hidden;
}

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

a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(47,111,99,.45)}
a:hover{border-bottom-color:var(--accent)}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:1px}

/* ---------- grid ---------- */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 22px;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:var(--gap);
}

.col-text{grid-column:2 / 8}
.col-wide{grid-column:2 / 10}
.col-full{grid-column:1 / -1}

/* ---------- header ---------- */
.site-head{
  border-bottom:1px solid rgba(22,33,31,.16);
  background:var(--bg);
}
.site-head .wrap{
  align-items:center;
  padding-top:20px;
  padding-bottom:20px;
  row-gap:10px;
}
.brand{
  grid-column:1 / 5;
  font-family:var(--serif);
  font-size:23px;
  letter-spacing:.02em;
  color:var(--ink);
  border:0;
}
.brand:hover{border:0;color:var(--accent)}
.site-nav{grid-column:5 / 13;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px 20px}
.site-nav a{
  font-size:14.5px;
  color:var(--ink-soft);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- bands ---------- */
.band{padding:var(--rhythm) 0}
.band-alt{background:var(--bg-alt)}
.band-dark{background:var(--bg-dark);color:var(--ink-on-dark)}
.band-dark a{color:var(--accent-light);border-bottom-color:rgba(159,208,196,.5)}
.band-dark a:focus-visible{outline-color:var(--accent-light)}

/* ---------- spine ---------- */
.spine{
  grid-column:1 / 2;
  grid-row:1 / 6;
  align-self:stretch;
  width:15px;
  min-height:170px;
  background:repeating-linear-gradient(180deg,var(--accent) 0 3px,transparent 3px 15px);
  border-left:1px solid rgba(47,111,99,.55);
  padding-left:0;
}

/* ---------- hero ---------- */
.hero{padding:64px 0 var(--rhythm)}
.hero .wrap{row-gap:0}
.hero h1{
  grid-column:2 / 12;
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(30px,4.6vw,54px);
  line-height:1.05;
  letter-spacing:-.005em;
  margin:0 0 26px;
  max-width:15ch;
}
.hero h1 span{display:block}
.rule-double{
  grid-column:2 / 12;
  height:6px;
  border-top:2px solid var(--ink);
  border-bottom:1px solid rgba(22,33,31,.4);
  margin-bottom:26px;
}
.hero-lead{grid-column:2 / 8;margin:0;font-size:19px;line-height:1.75;color:var(--ink)}
.hero-meta{
  grid-column:2 / 8;
  margin:22px 0 0;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-soft);
}

/* ---------- figures ---------- */
.fig-main{grid-column:7 / 13;margin:44px 0 0}
.fig-main img{width:100%;aspect-ratio:3 / 2;object-fit:cover}
figcaption{
  margin-top:10px;
  font-size:13px;
  line-height:1.6;
  color:var(--ink-soft);
  text-align:left;
}

/* ---------- section running head ---------- */
.rubrika{
  grid-column:1 / -1;
  display:flex;
  align-items:baseline;
  gap:14px;
  font-size:13px;
  line-height:1.5;
  color:var(--ink-soft);
  padding-bottom:8px;
  border-bottom:1px solid rgba(22,33,31,.22);
  margin-bottom:34px;
}
.rubrika .cislo{color:var(--accent2);letter-spacing:.08em}
.band-dark .rubrika{color:var(--soft-on-dark);border-bottom-color:rgba(238,244,241,.25)}
.band-dark .rubrika .cislo{color:var(--accent2-light)}

/* ---------- typography ---------- */
h2{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(24px,2.5vw,31px);
  line-height:1.15;
  letter-spacing:-.005em;
  margin:0 0 20px;
  grid-column:2 / 10;
}
h3{
  font-family:var(--serif);
  font-weight:400;
  font-size:20px;
  line-height:1.25;
  margin:34px 0 12px;
}
p{margin:0 0 20px}
.lead{
  grid-column:2 / 10;
  font-size:19px;
  line-height:1.72;
  margin-bottom:26px;
}
.prose{grid-column:2 / 8}
.prose > :last-child{margin-bottom:0}
.band-dark .prose,.band-dark .lead{color:var(--ink-on-dark)}

ul,ol{margin:0 0 22px;padding-left:0;list-style:none}
.check li,.steps li{
  position:relative;
  padding-left:26px;
  margin-bottom:11px;
  line-height:1.7;
}
.check li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:12px;height:2px;
  background:var(--accent);
}
.band-dark .check li::before{background:var(--accent-light)}
.steps{counter-reset:krok}
.steps li{padding-left:36px}
.steps li::before{
  counter-increment:krok;
  content:counter(krok,decimal-leading-zero);
  position:absolute;
  left:0;top:0;
  font-size:13px;
  color:var(--accent2);
  letter-spacing:.06em;
}
.band-dark .steps li::before{color:var(--accent2-light)}

.term{color:var(--ink);font-weight:600}
.band-dark .term{color:var(--ink-on-dark)}

.pozn{
  grid-column:2 / 8;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-soft);
  margin:26px 0 0;
  padding-top:12px;
  border-top:1px solid rgba(22,33,31,.2);
}
.band-dark .pozn{color:var(--soft-on-dark);border-top-color:rgba(238,244,241,.25)}

/* ---------- separator ---------- */
.oddelovac{
  grid-column:1 / -1;
  display:flex;
  justify-content:center;
  gap:11px;
  margin:44px 0 0;
}
.oddelovac span{width:20px;height:2px;background:var(--accent2);display:block}
.band-dark .oddelovac span{background:var(--accent2-light)}

/* ---------- dark detail block ---------- */
.detail-grid{align-items:start;row-gap:34px}
.fig-detail{grid-column:2 / 6;margin:0}
.fig-detail img{width:100%;aspect-ratio:4 / 5;object-fit:cover}
.band-dark figcaption{color:var(--soft-on-dark)}
.detail-text{grid-column:7 / 13}
.detail-text > :last-child{margin-bottom:0}

/* ---------- contact block ---------- */
.kontakt-blok{grid-column:2 / 8}
.mail{font-family:var(--serif);font-size:21px}

/* ---------- about ---------- */
.bukvice::first-letter{
  float:left;
  font-family:var(--serif);
  font-size:64px;
  line-height:.82;
  padding:6px 12px 0 0;
  color:var(--accent);
}

/* ---------- footer ---------- */
.site-foot{
  border-top:1px solid rgba(22,33,31,.2);
  padding:52px 0 60px;
  text-align:center;
}
.site-foot .wrap{row-gap:16px}
.foot-inner{grid-column:2 / 12;display:flex;flex-direction:column;align-items:center;gap:16px}
.foot-name{font-family:var(--serif);font-size:22px}
.foot-nav{display:flex;flex-wrap:wrap;justify-content:center;align-items:center}
.foot-nav a{font-size:14.5px;color:var(--ink-soft);border-bottom:1px solid transparent;padding:0 14px}
.foot-nav a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.foot-nav a + a{border-left:1px solid rgba(22,33,31,.25)}
.foot-mail{font-size:15px}
.foot-note{font-size:13px;line-height:1.7;color:var(--ink-soft);max-width:56ch;margin:0}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .hero h1{grid-column:2 / 13;max-width:18ch}
  .rule-double{grid-column:2 / 13}
  .hero-lead,.hero-meta{grid-column:2 / 11}
  .fig-main{grid-column:5 / 13}
  h2,.lead{grid-column:2 / 12}
  .prose,.pozn,.kontakt-blok{grid-column:2 / 11}
  .fig-detail{grid-column:2 / 7}
  .detail-text{grid-column:7 / 13}
}

@media (max-width:760px){
  :root{--rhythm:46px;--gap:16px}
  body{font-size:16.5px}
  .wrap{grid-template-columns:1fr;padding:0 18px}
  .brand,.site-nav,.hero h1,.rule-double,.hero-lead,.hero-meta,
  h2,.lead,.prose,.pozn,.kontakt-blok,.fig-main,.fig-detail,
  .detail-text,.rubrika,.oddelovac,.foot-inner{grid-column:1 / -1}
  .site-nav{justify-content:flex-start;gap:6px 16px}
  .site-head .wrap{row-gap:8px}
  .hero{padding:34px 0 var(--rhythm)}
  .hero h1{max-width:none;margin-bottom:20px}
  .hero h1 span{display:inline}
  .spine{
    grid-column:1 / -1;
    grid-row:auto;
    width:100%;
    height:13px;
    min-height:0;
    margin-bottom:26px;
    background:repeating-linear-gradient(90deg,var(--accent) 0 3px,transparent 3px 15px);
    border-left:0;
    border-top:1px solid rgba(47,111,99,.55);
  }
  .fig-main{margin-top:30px}
  .detail-grid{row-gap:26px}
  .oddelovac{margin-top:32px}
  .site-foot{padding:38px 0 44px}
  .foot-nav a{padding:0 10px}
  .bukvice::first-letter{font-size:52px}
}