:root{
  --bg:#101a24;
  --slab:#16232f;
  --paper:#e9edf0;
  --text:#e3e9ee;
  --muted:#8b9aa6;
  --ink:#101a24;
  --teal:#3fb3ae;
  --sand:#d8a15a;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --pad:56px;
}

*{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  padding:40px;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.72;
  overflow-x:hidden;
}

.shell{max-width:1200px;margin:0 auto}

.slab{
  background:var(--slab);
  border:1px solid rgba(63,179,174,.38);
  padding:44px var(--pad) 64px;
  overflow:hidden;
}

/* ---------- grid ---------- */
.g{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.c8{grid-column:1/9}
.c7{grid-column:1/8}
.c6{grid-column:1/7}
.c5{grid-column:1/6}
.side{grid-column:9/13}
.right6{grid-column:8/13}

/* ---------- typography ---------- */
h1,h2,h3{font-family:var(--serif);font-weight:400;color:var(--text);text-transform:none}
h1{font-size:44px;line-height:1.16;margin:0 0 14px}
h2{font-size:29px;line-height:1.24;margin:0 0 18px}
h3{font-size:21px;font-style:italic;margin:34px 0 10px}
p{margin:0 0 18px;max-width:74ch}
a{color:var(--teal);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration:none}
a:focus-visible,li a:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.lead{font-size:19px;color:var(--text)}
.muted{color:var(--muted)}

.label{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--sand);
  margin:0 0 12px;
  line-height:1.5;
}

/* ---------- header / nav ---------- */
.masthead{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:14px 32px;
  padding-bottom:16px;
  border-bottom:1px solid rgba(139,154,166,.3);
  margin-bottom:52px;
}
.brand{font-family:var(--serif);font-size:21px;color:var(--text);text-decoration:none;letter-spacing:.02em}
.brand:hover{color:var(--teal)}
.nav ul{display:flex;flex-wrap:wrap;gap:10px 22px;list-style:none;margin:0;padding:0}
.nav a{font-size:14px;color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--teal)}
.nav a[aria-current="page"]{color:var(--text);border-bottom:1px solid var(--sand);padding-bottom:2px}

/* ---------- mini tables ---------- */
.mini{
  border:1px solid rgba(216,161,90,.5);
  padding:16px 18px;
  margin:0;
  font-size:14px;
  line-height:1.55;
}
.mini > div{padding:8px 0;border-bottom:1px solid rgba(139,154,166,.22)}
.mini > div:last-child{border-bottom:0;padding-bottom:0}
.mini > div:first-child{padding-top:0}
.mini dt{color:var(--sand);font-size:12px;letter-spacing:.1em}
.mini dd{margin:2px 0 0;color:var(--muted)}
.mini a{color:var(--teal)}
.stack{display:flex;flex-direction:column;gap:22px}

/* ---------- separators ---------- */
.rule{position:relative;height:1px;background:rgba(139,154,166,.34);margin:88px 0;border:0}
.rule::before,.rule::after{content:"";position:absolute;top:-5px;width:1px;height:11px;background:var(--sand)}
.rule::before{left:0}
.rule::after{right:0}

.rule-note{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:28px;
  align-items:center;
  margin:88px 0;
}
.rule-note .line{grid-column:1/8;position:relative;height:1px;background:rgba(139,154,166,.34)}
.rule-note .line::before{content:"";position:absolute;left:0;top:-5px;width:1px;height:11px;background:var(--sand)}
.rule-note .mini{grid-column:9/13}

/* ---------- hero ---------- */
.hero h1{margin-bottom:16px}
.hero .c8 p{margin-bottom:0}

/* ---------- images ---------- */
figure{margin:0}
.imgrow{display:grid;grid-template-columns:repeat(12,1fr);gap:28px;align-items:end}
.imgrow img{grid-column:1/6;width:100%;height:auto;border:1px solid rgba(139,154,166,.4);display:block}
.imgrow figcaption{grid-column:7/11;font-size:14px;line-height:1.6;color:var(--muted)}
.imgrow figcaption .label{margin-bottom:8px}

/* ---------- contrast section ---------- */
.paper{
  background:var(--paper);
  color:var(--ink);
  margin:88px calc(-1 * var(--pad));
  padding:72px var(--pad);
}
.paper h2,.paper h3{color:var(--ink)}
.paper p{color:#2a3843}
.paper .label{color:#9a6f2e}
.paper a{color:#1c7c78}
.paper .mini{border-color:rgba(154,111,46,.55)}
.paper .mini dt{color:#9a6f2e}
.paper .mini dd{color:#4a5a66}
.paper .mini > div{border-bottom-color:rgba(16,26,36,.16)}
.paper li::marker{color:#1c7c78}
.paper figure img{width:100%;height:auto;display:block;border:1px solid rgba(16,26,36,.3)}
.paper figcaption{font-size:13px;line-height:1.6;color:#5a6a76;margin-top:10px}
.paper .detail-img{grid-column:8/13}
.paper .detail-text{grid-column:1/7}

/* ---------- lists ---------- */
ul.checks,ol.steps{margin:0 0 20px;padding-left:20px;max-width:70ch}
ul.checks li,ol.steps li{margin-bottom:9px}
ul.checks li::marker{color:var(--teal)}
ol.steps li::marker{color:var(--sand);font-family:var(--serif)}

/* ---------- footer ---------- */
.site-footer{max-width:1200px;margin:56px auto 0;padding:0 4px}
.foot-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;align-items:baseline}
.foot-top .name{font-family:var(--serif);font-size:19px}
.foot-line{height:1px;background:rgba(139,154,166,.3);margin:16px 0}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px 32px;align-items:baseline}
.foot-bottom ul{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;margin:0;padding:0}
.foot-bottom a{color:var(--muted);text-decoration:none;font-size:14px}
.foot-bottom a:hover{color:var(--teal)}
.foot-note{font-size:13px;color:var(--muted);max-width:52ch;margin:0}

/* ---------- responsive ---------- */
@media (max-width:900px){
  :root{--pad:32px}
  body{padding:24px}
  h1{font-size:34px}
  h2{font-size:25px}
  .g > *,
  .imgrow img,.imgrow figcaption,
  .paper .detail-img,.paper .detail-text{grid-column:1/-1}
  .g,.imgrow{gap:24px}
  .imgrow img{max-width:420px}
  .rule,.paper{margin-top:52px;margin-bottom:52px}
  .rule-note{margin:52px 0;grid-template-columns:1fr;gap:20px}
  .rule-note .line,.rule-note .mini{grid-column:1/-1}
  .masthead{margin-bottom:36px}
  .paper{padding:48px var(--pad)}
}

@media (max-width:520px){
  body{padding:14px;font-size:16px}
  :root{--pad:20px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:19px}
  .slab{padding:28px var(--pad) 44px}
  .imgrow img{max-width:100%}
}

.hero-figure{margin-top:64px}