:root{
  --bg:#101a24;
  --bg-alt:#16232f;
  --bg-contrast:#e9edf0;
  --text:#e3e9ee;
  --muted:#8b9aa6;
  --ink:#101a24;
  --accent:#3fb3ae;
  --accent2:#d8a15a;
  --step:84px;
  --gap:24px;
  --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:18px;
  line-height:1.9;
  overflow-x:hidden;
}

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

a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(63,179,174,.45)}
a:hover{border-bottom-color:var(--accent)}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:1px}

h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.3;margin:0}
h1{font-size:clamp(30px,4.4vw,52px);letter-spacing:-.005em}
h2{font-size:clamp(24px,2.6vw,31px)}
h3{font-size:20px}

p{margin:0 0 28px}
p:last-child{margin-bottom:0}

/* ---------- grid ---------- */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:var(--gap);
}

/* text column positions: 7 cols, each next shifted one column right */
.col-a{grid-column:1 / span 7}
.col-b{grid-column:2 / span 7}
.col-c{grid-column:3 / span 7}
.col-d{grid-column:4 / span 7}

/* ---------- registration marks ---------- */
.mark{
  position:absolute;
  width:20px;
  height:20px;
  pointer-events:none;
}
.mark::before,.mark::after{
  content:"";
  position:absolute;
  background:var(--accent2);
  opacity:.85;
}
.mark::before{left:0;top:9.5px;width:20px;height:1px}
.mark::after{top:0;left:9.5px;height:20px;width:1px}
.mark.teal::before,.mark.teal::after{background:var(--accent)}
.mark.tl{left:-10px;top:-10px}
.mark.tr{right:-10px;top:-10px}
.mark.bl{left:-10px;bottom:-10px}
.mark.br{right:-10px;bottom:-10px}

/* ---------- separators ---------- */
.rule{
  grid-column:1 / -1;
  position:relative;
  height:12px;
  margin:0 0 var(--step);
}
.rule::before,.rule::after{content:"";position:absolute;height:2px;left:0;width:min(58%,560px)}
.rule::before{top:0;background:var(--accent)}
.rule::after{top:8px;left:24px;background:var(--accent2)}

/* ---------- header / nav ---------- */
.site-head{
  border-bottom:1px solid rgba(139,154,166,.22);
  padding:26px 0 22px;
}
.site-head .wrap{row-gap:14px;align-items:baseline}
.brand{
  grid-column:1 / span 4;
  font-family:var(--serif);
  font-size:22px;
  letter-spacing:.16em;
  color:var(--text);
  border-bottom:0;
}
.brand:hover{color:var(--accent)}
.brand:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.site-nav{grid-column:5 / span 8}
.site-nav ul{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;justify-content:flex-end;
  gap:8px 26px;
}
.site-nav a{
  font-size:15px;
  color:var(--muted);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--text);border-bottom-color:var(--accent)}

/* ---------- hero ---------- */
.hero{padding:calc(var(--step)) 0 var(--step)}
.hero-frame{
  grid-column:1 / -1;
  position:relative;
  padding:34px 0 40px;
}
.hero h1{
  grid-column:auto;
  max-width:none;
  position:relative;
  width:75%;
}
.hero .h1-line{
  position:relative;
  display:block;
}
.hero .h1-line.struck::after{
  content:"";
  position:absolute;
  left:-6px;
  right:8%;
  bottom:.22em;
  height:2px;
  background:var(--accent);
  transform:translateY(5px);
}
.hero-body{
  display:grid;
  grid-template-columns:repeat(9,1fr);
  column-gap:var(--gap);
  margin-top:52px;
}
.hero-intro{grid-column:1 / span 5;color:var(--text)}
.hero-intro .lead{font-size:19px}
.hero-topics{grid-column:6 / span 4}
.hero-topics h2{
  font-size:15px;
  font-family:var(--sans);
  color:var(--accent2);
  letter-spacing:.08em;
  margin-bottom:14px;
  line-height:1.6;
}
.hero-topics ul{list-style:none;margin:0;padding:0;font-size:16px;line-height:1.75;color:var(--muted)}
.hero-topics li{position:relative;padding-left:22px;margin-bottom:10px}
.hero-topics li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:7px;height:7px;background:var(--accent);
}

/* ---------- generic sections ---------- */
.band{padding:var(--step) 0}
.band-alt{background:var(--bg-alt)}
.band-contrast{background:var(--bg-contrast);color:var(--ink)}
.band-contrast h2,.band-contrast h3{color:var(--ink)}
.band-contrast .caption{color:#4a5b68}
.band-contrast a{color:#0f6f6b;border-bottom-color:rgba(15,111,107,.5)}
.band-contrast .mark::before,.band-contrast .mark::after{background:#b07d38}

.sec-title{margin-bottom:26px}
.sec-num{
  display:block;
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.14em;
  color:var(--accent2);
  margin-bottom:10px;
  line-height:1.4;
}
.band + .band > .wrap > .rule{margin-top:0}

.block{margin-bottom:var(--step)}
.block:last-child{margin-bottom:0}

.list{margin:0 0 28px;padding:0;list-style:none}
.list li{position:relative;padding-left:26px;margin-bottom:14px}
.list li::before{
  content:"";position:absolute;left:0;top:.78em;
  width:8px;height:8px;border:1px solid var(--accent);
}
.band-contrast .list li::before{border-color:#0f6f6b}
.list-num{margin:0 0 28px;padding-left:24px}
.list-num li{margin-bottom:14px;padding-left:6px}
.list-num li::marker{color:var(--accent2);font-family:var(--serif)}

.caption{
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
  margin-top:14px;
}

/* ---------- main figure ---------- */
.figure-main{
  grid-column:3 / span 8;
  position:relative;
  margin:0;
  padding:0;
}
.figure-main .frame{position:relative;display:block}
.figure-main img{width:100%}
.figure-main .caption{max-width:60ch}

/* ---------- detail figure inside contrast band ---------- */
.detail-grid{grid-column:1 / -1;display:grid;grid-template-columns:repeat(12,1fr);column-gap:var(--gap);align-items:start}
.figure-detail{grid-column:1 / span 4;margin:0;position:relative}
.figure-detail .frame{position:relative;display:block}
.detail-text{grid-column:6 / span 6}

/* ---------- about ---------- */
.about-body{grid-column:3 / span 7;position:relative}
.about-body .sec{position:relative;margin-bottom:var(--step)}
.about-body .sec:last-child{margin-bottom:0}
.about-body .sec .mark{left:-56px;top:8px}

.page-head{padding:var(--step) 0 0}
.page-head h1{grid-column:1 / span 9;position:relative}
.page-head .kicker{
  grid-column:1 / -1;
  font-size:14px;
  letter-spacing:.14em;
  color:var(--accent2);
  margin:0 0 14px;
}
.page-head .rule{margin-top:36px;margin-bottom:0}

.legal{padding:var(--step) 0}
.legal-body{grid-column:2 / span 7}
.legal-body h2{margin-top:0}
.legal-body section{margin-bottom:var(--step)}
.legal-body section:last-child{margin-bottom:0}

.contact-line{
  font-size:19px;
  line-height:1.8;
}

/* ---------- footer ---------- */
.site-foot{
  background:var(--bg-contrast);
  color:var(--ink);
  padding:56px 0 60px;
}
.site-foot .rule{margin-bottom:44px}
.site-foot .rule::before{background:#0f6f6b}
.site-foot .rule::after{background:#b07d38}
.foot-main{grid-column:1 / span 7}
.foot-nav{grid-column:8 / span 5}
.foot-name{font-family:var(--serif);font-size:24px;letter-spacing:.16em;margin:0 0 12px}
.foot-main p{color:#3d4c58;font-size:16px;max-width:52ch}
.foot-nav ul{list-style:none;margin:0 0 18px;padding:0;font-size:16px}
.foot-nav li{margin-bottom:8px}
.site-foot a{color:#0f6f6b;border-bottom-color:rgba(15,111,107,.45)}
.site-foot a:focus-visible{outline:2px solid #0f6f6b}
.foot-mail{font-size:16px;color:#3d4c58}
.foot-fine{
  grid-column:1 / -1;
  margin-top:44px;
  padding-top:18px;
  border-top:1px solid rgba(16,26,36,.18);
  font-size:14px;
  color:#4a5b68;
}

/* ---------- responsive ---------- */
@media (max-width:900px){
  :root{--step:56px;--gap:18px}
  .wrap{padding:0 24px}
  .col-a,.col-b,.col-c,.col-d{grid-column:1 / -1}
  .brand{grid-column:1 / -1}
  .site-nav{grid-column:1 / -1}
  .site-nav ul{justify-content:flex-start;gap:6px 20px}
  .hero h1{width:100%}
  .hero-body{grid-template-columns:1fr;row-gap:36px;margin-top:38px}
  .hero-intro,.hero-topics{grid-column:1 / -1}
  .figure-main{grid-column:1 / -1}
  .detail-grid{grid-template-columns:1fr;row-gap:34px}
  .figure-detail,.detail-text{grid-column:1 / -1}
  .figure-detail{max-width:420px}
  .about-body{grid-column:1 / -1}
  .about-body .sec .mark{display:none}
  .legal-body{grid-column:1 / -1}
  .page-head h1{grid-column:1 / -1}
  .foot-main,.foot-nav{grid-column:1 / -1}
  .foot-nav{margin-top:34px}
}

@media (max-width:600px){
  :root{--step:50px}
  body{font-size:17px;line-height:1.85}
  .wrap{padding:0 18px}
  .hero{padding:50px 0}
  .rule::before,.rule::after{width:min(80%,320px)}
  .hero .h1-line.struck::after{right:2%}
}

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