:root{
  --paper:#f5f8fb;
  --white:#fff;
  --ink:#102a43;
  --muted:#516477;
  --blue:#1c70b5;
  --orange:#ff873d;
  --line:#d7e1e9;
  --pale:#eaf2f8;
  --radius:20px;
  --shadow:0 18px 50px rgba(16,42,67,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-width:320px;
  background:var(--paper);
  color:var(--ink);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.7;
}
a{color:var(--blue)}
a:hover{text-decoration:none}
img{max-width:100%}
.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.nav{
  min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px
}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.brand img{width:48px;height:48px}
.brand-copy{display:grid;font-weight:950;letter-spacing:-.055em;line-height:1}
.brand-copy small{margin-top:5px;color:var(--blue);font-size:9px;letter-spacing:.22em}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:800}
.nav-links a{text-decoration:none;color:var(--ink)}
.nav-links a:hover{color:var(--blue)}
.nav-links .cta{background:var(--ink);color:#fff;padding:11px 15px;border-radius:9px}
.hero{
  background:
    radial-gradient(circle at 88% 18%,rgba(28,112,181,.75),transparent 28rem),
    linear-gradient(135deg,#102a43 0%,#143c60 68%,#1c70b5 100%);
  color:#fff;
  padding:62px 0 58px;
}
.breadcrumbs{font-size:13px;color:#c8d9e8;margin-bottom:19px}
.breadcrumbs a{color:#fff}
.kicker{
  display:inline-flex;align-items:center;gap:9px;margin-bottom:13px;
  color:#ffd2b5;font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase
}
.kicker:before{content:"";width:28px;height:3px;background:var(--orange)}
.hero h1{
  max-width:850px;margin:0;
  font-size:clamp(42px,7vw,76px);line-height:.96;letter-spacing:-.055em
}
.hero p{max-width:760px;margin:22px 0 0;color:#d8e5ef;font-size:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:11px 17px;border-radius:9px;
  text-decoration:none;font-weight:850
}
.button.primary{background:var(--orange);color:#102a43}
.button.light{background:#fff;color:#102a43}
.article-shell{
  display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:44px;
  padding:52px 0 72px
}
.article{
  min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(25px,5vw,52px);box-shadow:var(--shadow)
}
.article h2{margin:38px 0 12px;font-size:29px;line-height:1.15;letter-spacing:-.025em}
.article h3{margin:28px 0 9px;font-size:21px;line-height:1.25}
.article p{margin:0 0 18px;color:#354d62}
.article strong{color:var(--ink)}
.article ul,.article ol{color:#354d62;padding-left:24px}
.article li{margin:8px 0}
.article .lead{font-size:20px;color:#29465e}
.fact{
  margin:28px 0;padding:21px 23px;border-left:5px solid var(--orange);
  border-radius:0 12px 12px 0;background:#fff3eb
}
.fact strong{display:block;margin-bottom:4px}
.formula{
  margin:25px 0;padding:22px;text-align:center;background:var(--ink);color:#fff;
  border-radius:14px;font-size:22px;font-weight:900;letter-spacing:.01em
}
.live-card{
  margin:32px 0;padding:23px;border:1px solid #bfd7ea;background:var(--pale);border-radius:14px
}
.live-card h2,.live-card h3{margin-top:0}
.source-note{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  color:#67798a;font-size:13px
}
.side{align-self:start;position:sticky;top:24px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;
  box-shadow:0 10px 30px rgba(16,42,67,.07);margin-bottom:16px
}
.side-card h2{font-size:17px;margin:0 0 11px}
.side-card a{display:block;padding:7px 0;text-decoration:none;font-weight:750;font-size:14px}
.side-card a+a{border-top:1px solid #edf1f4}
.cards{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:50px 0
}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:25px;text-decoration:none;color:var(--ink);
  box-shadow:0 12px 34px rgba(16,42,67,.07)
}
.card:hover{transform:translateY(-2px);transition:.18s ease}
.card .tag{font-size:11px;color:var(--blue);font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.card h2{font-size:25px;line-height:1.1;margin:12px 0 10px}
.card p{margin:0;color:var(--muted)}
.card .read{margin-top:auto;padding-top:20px;color:var(--orange);font-weight:900}
.hub-intro{padding:47px 0 0}
.hub-intro h2{font-size:30px;margin:0 0 10px}
.hub-intro p{max-width:780px;color:var(--muted)}
.footer{
  background:var(--ink);color:#c8d6e1;padding:29px 0;font-size:13px
}
.footer-inner{display:flex;justify-content:space-between;gap:25px}
.footer a{color:#fff}
@media(max-width:850px){
  .article-shell{grid-template-columns:1fr}
  .side{position:static}
  .cards{grid-template-columns:1fr}
  .nav-links a:not(.cta){display:none}
}
@media(max-width:560px){
  .container{width:min(100% - 26px,1120px)}
  .hero{padding:45px 0}
  .hero h1{font-size:43px}
  .hero p{font-size:16px}
  .article{padding:24px 20px}
  .footer-inner{display:block}
}