:root{
  --blue:#087fa9;
  --blue2:#075a79;
  --cyan:#17b9c4;
  --aqua:#eaf8fa;
  --ink:#373b3e;
  --muted:#747c80;
  --line:#dfe8eb;
  --paper:#ffffff;
  --soft:#f7fafb;
  --navy:#163b50;
  --shadow:0 18px 50px rgba(17,78,100,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:#fff;
  color:var(--ink);
  font-family:Arial,Helvetica,sans-serif;
  line-height:1.68;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1120px,92%);margin:auto}
.topline{height:7px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.header{background:#fff;border-bottom:1px solid var(--line)}
.header-row{min-height:118px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo img{width:330px;height:90px;object-fit:contain;object-position:left center}
.mininav{display:flex;align-items:center;gap:24px;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:#5d666a}
.mininav a{padding:10px 0;border-bottom:2px solid transparent}
.mininav a:hover,.mininav a.active{color:var(--blue);border-color:var(--cyan)}
.menu-toggle{display:none;background:none;border:0;font-size:1.55rem}
.hero{padding:86px 0 82px;background:radial-gradient(circle at 85% 20%,rgba(24,185,196,.13),transparent 27%),linear-gradient(135deg,#fff,#f5fbfc)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:58px;align-items:center}
.eyebrow,.kicker{font-size:.74rem;text-transform:uppercase;letter-spacing:.18em;font-weight:900;color:var(--blue)}
h1,h2,h3{line-height:1.08;margin:0 0 18px}
h1{font-size:clamp(3.8rem,7vw,7.3rem);letter-spacing:-.06em;color:#32383b}
h2{font-size:clamp(2.4rem,4.2vw,4.6rem);letter-spacing:-.045em;color:#33393c}
h3{font-size:1.42rem;color:#33393c}
.hero p{font-size:1.13rem;color:#677176;max-width:760px}
.hero-mark{position:relative;height:430px;display:grid;place-items:center}
.orbit{position:absolute;border:1px solid rgba(8,127,169,.19);border-radius:50%}
.orbit.one{width:360px;height:360px}
.orbit.two{width:275px;height:275px;border-color:rgba(23,185,196,.3)}
.orbit.three{width:185px;height:185px;border-style:dashed}
.core{width:96px;height:96px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--cyan));box-shadow:0 0 0 18px rgba(23,185,196,.08),0 0 0 40px rgba(8,127,169,.045);position:relative}
.core:before,.core:after{content:"";position:absolute;background:#fff;left:24px;right:24px;top:45px;height:6px;border-radius:8px}
.core:after{transform:rotate(90deg)}
.dot{position:absolute;width:16px;height:16px;border-radius:50%;background:var(--blue);box-shadow:0 4px 15px rgba(0,0,0,.12)}
.dot.d1{top:43px;left:184px}.dot.d2{right:86px;top:150px;background:var(--cyan)}.dot.d3{bottom:44px;left:112px;background:#7fbdca}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 19px;border:1px solid var(--blue);background:var(--blue);color:#fff;font-weight:850;font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;transition:.2s}
.btn:hover{background:var(--blue2);transform:translateY(-2px)}
.btn.ghost{background:#fff;color:var(--blue)}
.btn.cyan{background:var(--cyan);border-color:var(--cyan)}
.source-links{padding:30px 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.source-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.source-card{padding:24px;border:1px solid var(--line);background:#fff;transition:.2s}
.source-card:hover{border-color:#96d9df;box-shadow:var(--shadow);transform:translateY(-2px)}
.source-card small{display:block;color:var(--blue);font-weight:900;text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px}
.section{padding:82px 0}
.section.soft{background:var(--soft)}
.section.aqua{background:var(--aqua)}
.section.dark{background:var(--navy);color:#eaf2f5}
.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:#cad9df}
.section-head{max-width:790px;margin-bottom:38px}
.section-head p,.muted{color:var(--muted)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);padding:27px;box-shadow:0 6px 22px rgba(18,69,88,.035)}
.card p,.card li{color:var(--muted)}
.chapter-card{position:relative;overflow:hidden}
.chapter-card:before{content:attr(data-n);position:absolute;right:-4px;top:-27px;font-size:115px;font-weight:900;color:rgba(8,127,169,.055);line-height:1}
.chapter-card .chapter-tag{color:var(--blue);font-weight:900;font-size:.72rem;text-transform:uppercase;letter-spacing:.12em}
.page-hero{padding:68px 0;background:linear-gradient(135deg,#f4fbfc,#fff);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(3rem,5.8vw,5.8rem);max-width:950px}
.page-hero p{max-width:800px;color:var(--muted)}
.breadcrumbs{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;color:var(--blue);margin-bottom:14px}
.index-layout{display:grid;grid-template-columns:300px 1fr;gap:42px;align-items:start}
.sidebar{position:sticky;top:24px;border:1px solid var(--line);background:#fff}
.sidebar .title{padding:15px 17px;background:var(--navy);color:#fff;font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.1em}
.sidebar a{display:block;padding:12px 17px;border-bottom:1px solid var(--line);font-size:.86rem;color:#596368}
.sidebar a:hover,.sidebar a.active{color:var(--blue);background:#f5fbfc}
.article{max-width:820px}
.article h2{font-size:2rem;margin-top:36px}
.article h3{margin-top:28px}
.article p,.article li{color:#59666c}
.article ul,.article ol{padding-left:22px}
.session{display:flex;align-items:center;gap:13px;padding:14px 16px;background:#f5fafb;border-left:4px solid var(--cyan);margin:20px 0 28px;font-size:.85rem;color:#526167}
.session:before{content:"▶";color:var(--blue);font-size:.72rem}
.quote{padding:22px 24px;border-left:5px solid var(--cyan);background:#eef9fa;font-size:1.05rem;color:#405158}
.partner{display:flex;gap:18px;align-items:flex-start;padding:22px;border:1px solid var(--line);background:#fff}
.partner-badge{width:48px;height:48px;flex:0 0 48px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-weight:900}
.topic-list{display:grid;gap:12px}
.topic-link{display:grid;grid-template-columns:72px 1fr;gap:18px;padding:21px 22px;border:1px solid var(--line);background:#fff}
.topic-num{font-size:1.9rem;font-weight:900;color:var(--cyan)}
.topic-link p{margin:0;color:var(--muted)}
.pdfbox{padding:28px;border:1px solid var(--line);background:#fff;display:flex;justify-content:space-between;gap:24px;align-items:center}
.footer{background:#26383f;color:#d8e3e6;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.3fr .8fr .8fr;gap:34px}
.footer .logo img{filter:brightness(0) invert(1);opacity:.95}
.footer h3{color:#fff;font-size:.83rem;text-transform:uppercase;letter-spacing:.1em}
.footer a{display:block;margin:7px 0}
.footer p{font-size:.88rem}
.footline{margin-top:30px;padding-top:17px;border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:.78rem}
@media(max-width:930px){
 .mininav{display:none;position:absolute;left:4%;right:4%;top:100px;background:#fff;padding:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .mininav.open{display:flex}.menu-toggle{display:block}.hero-grid,.index-layout{grid-template-columns:1fr}.sidebar{position:static}
 .grid-4,.grid-3{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.hero-mark{height:310px}
}
@media(max-width:640px){
 .header-row{min-height:84px}.logo img{width:230px;height:60px}
 h1{font-size:clamp(3rem,15vw,4.8rem)}.hero{padding:58px 0}.hero-mark{display:none}
 .source-grid,.grid-4,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}.section{padding:64px 0}
 .pdfbox{flex-direction:column;align-items:flex-start}.topic-link{grid-template-columns:54px 1fr}
}