/* Krodenta — stone-courses */

:root{
  --bg:#151b2b;
  --bg-alt:#1c2436;
  --sand:#eee8dc;
  --ink:#e4e0d4;
  --muted:#8a93a5;
  --accent:#c98a4c;
  --accent2:#7fa3b8;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --pad-y:88px;
  --pad-x:52px;
}

*,*::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:1.8;
  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;}
a:focus-visible,:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

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

.wrap{
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:26px;
}

.band{padding:var(--pad-y) 0;}
.band.tight{padding:52px 0;}
.tone-a{background:var(--bg);}
.tone-b{background:var(--bg-alt);}
.tone-sand{background:var(--sand);color:#151b2b;}

.col{grid-column:1 / span 6;}
.s1 .col{grid-column:2 / span 6;}
.s2 .col{grid-column:3 / span 6;}
.s3 .col{grid-column:4 / span 6;}

.wide{grid-column:1 / span 9;}
.s1 .wide{grid-column:2 / span 9;}
.s2 .wide{grid-column:3 / span 9;}

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

h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-0.01em;margin:0;}
h1{font-size:clamp(2.4rem,5.6vw,4.3rem);line-height:1.05;}
h2{font-size:clamp(1.45rem,2.5vw,2.05rem);line-height:1.12;margin-bottom:22px;}
h3{font-size:1.15rem;line-height:1.25;margin:34px 0 12px;}

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

.lead{font-size:19px;line-height:1.75;}

.marker{
  display:block;
  font-family:var(--sans);
  font-size:13px;
  line-height:1.4;
  letter-spacing:0.06em;
  color:var(--accent2);
  margin-bottom:14px;
}
.tone-sand .marker{color:#5d7688;}

.caption{
  font-size:13px;
  line-height:1.55;
  color:var(--muted);
  margin:14px 0 0;
  max-width:52ch;
}
.tone-sand .caption{color:#5b6270;}

.note{color:var(--muted);font-size:15px;}
.tone-sand .note{color:#4d5666;}

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

ul,ol{margin:0 0 20px;padding-left:0;list-style:none;}
ul li{position:relative;padding-left:22px;margin-bottom:11px;}
ul li::before{
  content:"";
  position:absolute;
  left:0;top:0.78em;
  width:9px;height:2px;
  background:var(--accent);
}
ol{counter-reset:st;}
ol li{position:relative;padding-left:36px;margin-bottom:13px;counter-increment:st;}
ol li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:13px;
  color:var(--accent2);
}
.tone-sand ol li::before{color:#5d7688;}
li:last-child{margin-bottom:0;}

.topics{
  columns:2;
  column-gap:26px;
  margin-top:26px;
}
.topics li{break-inside:avoid;}

/* ---------- hero (three courses) ---------- */

.course-nav{background:#111624;padding:18px 0;}
.course-nav .wrap{display:block;}
.nav-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px 30px;
}
.sitename{
  font-family:var(--serif);
  font-size:20px;
  letter-spacing:0.02em;
  color:var(--ink);
  text-decoration:none;
  margin-right:auto;
}
.sitename:hover{color:var(--accent);}
nav ul{display:flex;flex-wrap:wrap;gap:12px 26px;margin:0;}
nav li{padding:0;margin:0;}
nav li::before{display:none;}
nav a{
  color:var(--muted);
  text-decoration:none;
  font-size:15px;
  padding-bottom:3px;
  border-bottom:1px solid transparent;
}
nav a:hover{color:var(--ink);border-bottom-color:var(--accent);}
nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--accent);}

.course-title{
  background:var(--bg-alt);
  padding:120px 0 44px;
}
.course-title .wrap{align-items:end;}
.course-title h1{grid-column:1 / span 9;}
.hero-kicker{
  grid-column:1 / span 9;
  font-size:13px;
  letter-spacing:0.1em;
  text-transform:none;
  color:var(--accent2);
  margin-bottom:28px;
}

.course-intro{
  background:#101524;
  padding:56px 0 64px;
}
.course-intro .intro-text{grid-column:1 / span 6;}
.course-intro .intro-list{grid-column:8 / span 5;}

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

.figure-main{grid-column:4 / span 9;margin:0;}
.figure-main img{width:100%;aspect-ratio:3 / 2;object-fit:cover;}
.figure-main figcaption{
  font-size:13px;
  line-height:1.55;
  color:var(--muted);
  margin-top:14px;
  max-width:56ch;
}

/* ---------- detail (sand section) ---------- */

.detail-grid{align-items:start;}
.figure-detail{grid-column:1 / span 4;margin:0;}
.figure-detail img{width:100%;aspect-ratio:4 / 5;object-fit:cover;}
.figure-detail figcaption{
  font-size:12.5px;
  line-height:1.5;
  color:#5b6270;
  margin-top:12px;
}
.detail-text{grid-column:6 / span 6;}
.tone-sand a{color:#9a5f24;}

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

.site-footer{
  background:var(--sand);
  color:#151b2b;
  margin-top:0;
  padding:64px 0 56px;
}
.footer-name{
  grid-column:1 / span 12;
  font-family:var(--serif);
  font-size:clamp(2.6rem,9vw,6.4rem);
  line-height:0.98;
  letter-spacing:-0.02em;
  margin:0 0 46px;
}
.footer-col{grid-column:span 4;}
.footer-col .rule{
  display:block;
  width:44px;
  height:2px;
  background:var(--accent);
  margin-bottom:16px;
}
.footer-col h2{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:0.08em;
  color:#5b6270;
  margin:0 0 12px;
  font-weight:400;
}
.footer-col ul{margin:0;}
.footer-col li{padding-left:0;margin-bottom:8px;}
.footer-col li::before{display:none;}
.footer-col a{color:#9a5f24;text-decoration:none;border-bottom:1px solid rgba(154,95,36,.4);}
.footer-col a:hover{border-bottom-color:#9a5f24;}
.footer-col p{font-size:14.5px;line-height:1.65;color:#414957;}
.footer-bottom{
  grid-column:1 / span 12;
  margin-top:40px;
  font-size:13px;
  color:#5b6270;
}

/* ---------- inner pages ---------- */

.page-head{background:var(--bg-alt);padding:96px 0 52px;}
.page-head h1{grid-column:1 / span 8;font-size:clamp(2rem,4.4vw,3.2rem);}
.page-head .marker{grid-column:1 / span 8;}

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

@media (max-width:980px){
  .wrap{column-gap:20px;}
  .col,.s1 .col,.s2 .col,.s3 .col,
  .wide,.s1 .wide,.s2 .wide,
  .figure-main,.figure-detail,.detail-text,
  .course-title h1,.hero-kicker,
  .course-intro .intro-text,.course-intro .intro-list,
  .page-head h1,.page-head .marker{
    grid-column:1 / span 12;
  }
  .figure-detail{margin-bottom:34px;max-width:460px;}
  .course-title{padding:78px 0 36px;}
  .course-intro .intro-list{margin-top:34px;}
  .footer-col{grid-column:1 / span 12;margin-bottom:32px;}
  .footer-col:last-of-type{margin-bottom:0;}
}

@media (max-width:640px){
  :root{--pad-y:56px;--pad-x:26px;}
  body{font-size:16.5px;}
  .wrap{padding:0 22px;column-gap:14px;}
  .band{padding:56px 0;}
  .band.tight{padding:40px 0;}
  .topics{columns:1;}
  .course-title{padding:56px 0 30px;}
  .lead{font-size:17.5px;}
  .nav-inner{gap:10px 18px;}
  nav ul{gap:10px 18px;}
  .site-footer{padding:48px 0 40px;}
}