:root{
  --navy:#0b1a2e;
  --navy-2:#0e2038;
  --navy-line:#1f3d5e;
  --ivory:#f4f1e8;
  --ivory-2:#eae5d8;
  --ink:#12202f;
  --ink-soft:#3d4c5c;
  --cyan:#8fc7d6;
  --orange:#e4711f;
  --orange-dark:#b8540f;
  --wrap:1180px;
  --gut:clamp(18px,4vw,44px);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--ivory);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  font-size:17px;
  line-height:1.66;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--orange-dark);text-decoration:underline;text-underline-offset:3px;}
a:hover{color:var(--ink);}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);}
.skip{position:absolute;left:-9999px;top:0;background:var(--orange);color:#fff;padding:10px 16px;z-index:20;}
.skip:focus{left:0;}

/* ---------- header / navigation ---------- */
.topbar{background:var(--navy);color:var(--ivory);border-bottom:1px solid var(--navy-line);}
.topbar .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:14px 28px;padding-top:16px;padding-bottom:16px;}
.brand{
  color:var(--ivory);text-decoration:none;font-weight:800;letter-spacing:.16em;
  text-transform:uppercase;font-size:15px;border-left:3px solid var(--orange);padding-left:10px;
}
.brand:hover{color:var(--cyan);}
.nav{margin-left:auto;}
.nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin:0;padding:0;}
.nav a{
  color:var(--ivory);text-decoration:none;font-size:13px;letter-spacing:.12em;
  text-transform:uppercase;padding:4px 0;border-bottom:1px solid transparent;
}
.nav a:hover,.nav a[aria-current="page"]{border-bottom-color:var(--orange);color:#fff;}

/* ---------- generic sections ---------- */
.dark{background:var(--navy);color:var(--ivory);}
.dark h2,.dark h3{color:var(--ivory);}
.dark a{color:var(--cyan);}
.dark a:hover{color:#fff;}
.light{background:var(--ivory);}
.tint{background:var(--ivory-2);}
section{padding:clamp(46px,7vw,86px) 0;}
.dark + .dark{border-top:1px solid var(--navy-line);}

h1,h2,h3{line-height:1.16;letter-spacing:-.01em;margin:0 0 .55em;}
h1{font-size:clamp(30px,5.1vw,54px);font-weight:800;}
h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;}
h3{font-size:clamp(18px,2.2vw,22px);font-weight:700;}
p{margin:0 0 1.05em;max-width:72ch;}
.lead{font-size:clamp(18px,2.1vw,21px);}

.label{
  font-size:12px;letter-spacing:.2em;text-transform:uppercase;font-weight:700;
  color:var(--orange);margin:0 0 14px;
}
.dark .label{color:var(--cyan);}
.secnum{
  font-size:clamp(40px,7vw,74px);font-weight:800;line-height:1;color:rgba(18,32,47,.14);
  margin:0 0 6px;letter-spacing:-.03em;
}
.dark .secnum{color:rgba(143,199,214,.22);}
.rule{height:1px;background:var(--navy-line);opacity:.35;border:0;margin:0;}
.dark .rule{background:var(--cyan);opacity:.28;}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:var(--ivory);padding:clamp(38px,6vw,72px) 0 clamp(46px,7vw,80px);
  background-image:linear-gradient(var(--navy-line) 1px,transparent 1px),linear-gradient(90deg,var(--navy-line) 1px,transparent 1px);
  background-size:100% 84px,84px 100%;background-position:0 0;}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1.18fr);gap:clamp(26px,4vw,56px);align-items:start;}
.hero-copy{padding-top:6px;}
.hero h1{max-width:14ch;}
.hero p{color:#d7dfe8;}
.hero-meta{list-style:none;margin:26px 0 0;padding:16px 0 0;border-top:1px solid var(--navy-line);
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px;}
.hero-meta li{font-size:12.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--cyan);}
.hero-meta strong{display:block;font-size:15px;letter-spacing:.02em;text-transform:none;color:var(--ivory);font-weight:600;margin-top:4px;}

.frame{position:relative;padding:22px;}
.frame::before,.frame::after{content:"";position:absolute;border:1px solid var(--cyan);opacity:.55;}
.frame::before{inset:0 auto auto 0;width:44px;height:44px;border-right:0;border-bottom:0;}
.frame::after{inset:auto 0 0 auto;width:44px;height:44px;border-left:0;border-top:0;}
.frame img{border:1px solid var(--navy-line);width:100%;}
.frame-marks{position:absolute;top:0;left:22px;right:22px;height:8px;
  background-image:linear-gradient(90deg,var(--cyan) 1px,transparent 1px);background-size:26px 100%;opacity:.4;}
.frame-cap{display:flex;justify-content:space-between;gap:14px;margin-top:12px;
  font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);}

/* ---------- text blocks / columns ---------- */
.cols{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:clamp(24px,4vw,60px);align-items:start;}
.cols-wide{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,1.9fr);gap:clamp(20px,4vw,54px);align-items:start;}
.note{
  font-size:14px;line-height:1.6;color:var(--ink-soft);border-left:2px solid var(--orange);
  padding:2px 0 2px 16px;max-width:38ch;
}
.dark .note{color:#c2ccd7;border-left-color:var(--cyan);}

.stack{display:grid;gap:clamp(26px,3.4vw,44px);}
.block{border-top:1px solid rgba(18,32,47,.2);padding-top:22px;}
.dark .block{border-top-color:var(--navy-line);}

ul.list,ol.list{margin:0 0 1.1em;padding-left:0;list-style:none;max-width:72ch;}
ul.list li,ol.list li{position:relative;padding-left:26px;margin-bottom:10px;}
ul.list li::before{content:"";position:absolute;left:0;top:.62em;width:12px;height:1px;background:var(--orange);}
ol.list{counter-reset:step;}
ol.list li::before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--orange);}
.dark ul.list li::before{background:var(--cyan);}
.dark ol.list li::before{color:var(--cyan);}

/* ---------- checklist ---------- */
.check{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:0;border-top:1px solid var(--navy-line);}
.check > div{border-bottom:1px solid var(--navy-line);border-right:1px solid var(--navy-line);padding:22px clamp(16px,2.4vw,26px);}
.check > div:last-child{border-right:1px solid var(--navy-line);}
.check h3{font-size:17px;margin-bottom:8px;}
.check p{font-size:15px;margin:0;color:#c8d2dc;}
.check span{display:block;font-size:12px;letter-spacing:.18em;color:var(--cyan);margin-bottom:8px;}

/* ---------- detail image section ---------- */
.detail{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:clamp(22px,3.6vw,48px);align-items:start;}
.detail figure{margin:0;}
.detail img{border:1px solid rgba(18,32,47,.35);width:100%;}
.detail figcaption{font-size:13.5px;color:var(--ink-soft);margin-top:10px;border-top:1px solid rgba(18,32,47,.2);padding-top:8px;}

.deftable{width:100%;border-collapse:collapse;margin:0 0 1.1em;font-size:15.5px;}
.deftable th,.deftable td{text-align:left;vertical-align:top;padding:12px 14px 12px 0;border-bottom:1px solid rgba(18,32,47,.2);}
.deftable th{width:34%;font-weight:700;}
.dark .deftable th,.dark .deftable td{border-bottom-color:var(--navy-line);}

/* ---------- page head (subpages) ---------- */
.pagehead{background:var(--navy);color:var(--ivory);padding:clamp(40px,6vw,76px) 0 clamp(30px,4vw,52px);}
.pagehead p{color:#d7dfe8;max-width:64ch;}
.pagehead .wrap{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.7fr);gap:clamp(20px,4vw,52px);align-items:end;}
.pagehead dl{margin:0;font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);
  border-top:1px solid var(--navy-line);padding-top:14px;}
.pagehead dd{margin:2px 0 12px;color:var(--ivory);text-transform:none;letter-spacing:0;font-size:15px;}

/* ---------- footer ---------- */
.foot{background:var(--navy-2);color:var(--ivory);padding:clamp(38px,5vw,64px) 0 30px;border-top:3px solid var(--orange);}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr) minmax(0,1fr);gap:0;}
.foot-grid > div{border:1px solid var(--navy-line);border-right:0;padding:22px clamp(16px,2vw,24px);}
.foot-grid > div:last-child{border-right:1px solid var(--navy-line);}
.foot h2{font-size:14px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px;}
.foot p{font-size:15px;color:#cdd6e0;margin-bottom:.6em;}
.foot ul{list-style:none;margin:0;padding:0;}
.foot li{margin-bottom:8px;font-size:15px;}
.foot a{color:var(--ivory);}
.foot a:hover{color:var(--cyan);}
.foot-base{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  margin-top:22px;padding-top:16px;border-top:1px solid var(--navy-line);
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#93a4b6;}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .hero .wrap,.cols,.cols-wide,.detail,.pagehead .wrap{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid > div{border-right:1px solid var(--navy-line);border-bottom:0;}
  .foot-grid > div:last-child{border-bottom:1px solid var(--navy-line);}
  .note{max-width:none;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .topbar .wrap{gap:10px;}
  .nav{margin-left:0;width:100%;}
  .nav ul{gap:6px 16px;}
  .hero-meta{grid-template-columns:minmax(0,1fr);}
  .frame{padding:12px;}
  .check > div{border-right:1px solid var(--navy-line);}
  .deftable th{width:auto;display:block;padding-bottom:2px;border-bottom:0;}
  .deftable td{display:block;padding-top:0;}
}

.deftable caption{text-align:left;margin:0 0 8px;}