:root{
  --ink:#33454f;
  --text:#62727c;
  --muted:#8b9aa3;
  --line:#e3edf3;
  --blue:#9fc7df;
  --blue2:#eff7fb;
  --blue3:#f7fbfd;
  --white:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--white);
  color:var(--ink);
  font-family:"DM Sans",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit}
.wrap{width:min(1100px,calc(100% - 56px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  min-height:66px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.brand{
  font-size:13px;
  font-weight:500;
  text-decoration:none;
  color:#475761;
}
nav{display:flex;gap:20px}
nav a{
  font-size:11px;
  color:#7b8891;
  text-decoration:none;
}
nav a:hover{color:#5a839d}

.hero{padding:86px 0 74px}
.hero-grid{
  display:grid;
  grid-template-columns:1.45fr .75fr;
  gap:80px;
  align-items:start;
}
.eyebrow{
  margin:0 0 12px;
  text-transform:uppercase;
  letter-spacing:.15em;
  font-size:9px;
  font-weight:500;
  color:#628ca7;
}
h1,h2,h3{margin-top:0}
h1{
  font-family:"Source Serif 4",Georgia,serif;
  font-size:clamp(34px,4.4vw,48px);
  line-height:1.16;
  font-weight:400;
  letter-spacing:-.02em;
  margin-bottom:18px;
  max-width:760px;
  color:#3b4d57;
}
.hero-copy{
  margin:0 0 14px;
  max-width:720px;
  font-size:16px;
  color:var(--text);
}
.hero-copy.secondary{color:#72818a}
.hero-aside{
  margin-top:12px;
  padding:22px 24px;
  background:var(--blue3);
  border:1px solid #e2edf3;
  border-radius:18px;
}
.aside-quote{
  margin:0 0 10px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:22px;
  line-height:1.45;
  color:#607685;
}
.aside-meta{
  margin:0;
  font-size:12px;
  color:#88949c;
}

.section{padding:80px 0}
.tint{background:var(--blue2)}
.section-head{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:72px;
  align-items:start;
}
h2{
  font-family:"Source Serif 4",Georgia,serif;
  font-size:clamp(26px,3.2vw,36px);
  line-height:1.22;
  font-weight:400;
  letter-spacing:-.015em;
  margin-bottom:0;
  color:#41545e;
}
.body{
  margin:0 0 14px;
  max-width:700px;
  font-size:15px;
  color:var(--text);
}

.cards{
  margin-top:42px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.cards article{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:22px;
}
.cards h3,
.diagram-copy h3,
.proof-title{
  font-size:15px;
  font-weight:500;
  color:#4b5e69;
  margin-bottom:8px;
}
.cards p,
.diagram-copy p,
.proof-list p{
  margin:0;
  font-size:13px;
  color:#6f7e87;
}

.diagram-block{
  margin-top:36px;
  border-top:1px solid var(--line);
  padding-top:24px;
}
.diagram-copy{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:40px;
  margin-bottom:18px;
}
.diagram-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:22px;
  padding:14px;
  overflow:hidden;
}
.diagram-svg{
  width:100%;
  height:auto;
  display:block;
}

.proof-list{
  margin-top:42px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}
.proof-list article{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px 18px 16px;
}

.callout{
  margin-top:30px;
  max-width:860px;
  padding:22px 24px;
  background:#f8fbfd;
  border-left:3px solid var(--blue);
}
.callout p{
  margin:0 0 8px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:19px;
  line-height:1.52;
  color:#607887;
}
.callout p:last-child{margin-bottom:0}

.source-row{
  margin-top:18px;
  display:flex;
  gap:20px;
  flex-wrap:wrap;
}
.source-row a{
  font-size:10px;
  color:#5f88a3;
  text-decoration:none;
}

.contact-grid{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:72px;
}
.contact-links{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  margin-top:18px;
}
.contact-links a{
  font-size:11px;
  color:#6f7e87;
  text-decoration:none;
  border-bottom:1px solid #dae8f0;
}

footer{
  padding:22px 0;
  border-top:1px solid var(--line);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  gap:18px;
  font-size:9px;
  color:#98a4ab;
}

@media(max-width:900px){
  .hero-grid,.section-head,.contact-grid,.diagram-copy{grid-template-columns:1fr;gap:20px}
  .cards,.proof-list{grid-template-columns:1fr}
}
@media(max-width:680px){
  .wrap{width:min(100% - 30px,1100px)}
  nav{display:none}
  .hero{padding:64px 0 56px}
  .section{padding:64px 0}
  h1{font-size:36px}
  .footer-inner{flex-direction:column}
}

.evidence-section{
  background:#fff;
  border-top:1px solid var(--line);
}
.evidence-intro{
  margin-bottom:52px;
}
.evidence-group{
  margin-top:46px;
}
.evidence-group:first-of-type{
  margin-top:0;
}
.evidence-group-head{
  display:grid;
  grid-template-columns:42px 1fr;
  gap:14px;
  align-items:start;
  margin-bottom:14px;
}
.evidence-group-head>span{
  font-family:"Source Serif 4",Georgia,serif;
  font-size:20px;
  color:#a0bfd1;
  line-height:1.2;
}
.evidence-group-head h3{
  margin:0 0 3px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:22px;
  font-weight:400;
  color:#455b68;
}
.evidence-group-head p{
  margin:0;
  font-size:12px;
  color:#87949c;
}
.evidence-card{
  display:grid;
  grid-template-columns:245px 1fr;
  gap:34px;
  padding:24px 0;
  border-top:1px solid var(--line);
}
.evidence-card:last-child{
  border-bottom:1px solid var(--line);
}
.evidence-card.featured{
  margin:0 0 8px;
  padding:26px 24px;
  border:1px solid #d8e8f1;
  border-radius:18px;
  background:#f8fcfe;
}
.evidence-meta{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding-top:2px;
  font-size:10px;
  line-height:1.5;
  color:#94a0a7;
}
.evidence-meta .source-name{
  font-size:12px;
  font-weight:500;
  color:#5c8298;
}
.evidence-main h4{
  margin:0 0 10px;
  max-width:760px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:20px;
  line-height:1.32;
  font-weight:400;
  color:#425762;
}
.evidence-tag{
  display:inline-block;
  margin-bottom:9px;
  padding:4px 8px;
  border-radius:999px;
  background:#e8f4fa;
  font-size:9px;
  font-weight:500;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:#5b839a;
}
.evidence-summary{
  margin:0 0 9px;
  max-width:760px;
  font-size:13px;
  line-height:1.68;
  color:#677780;
}
.evidence-why{
  margin:0 0 13px;
  max-width:760px;
  font-size:12px;
  line-height:1.65;
  color:#7b8991;
}
.evidence-why strong{
  font-weight:500;
  color:#607786;
}
.evidence-action{
  display:inline-block;
  font-size:11px;
  font-weight:500;
  color:#5c849b;
  text-decoration:none;
  border-bottom:1px solid #cfe1eb;
  padding-bottom:2px;
}
.evidence-action:hover{
  color:#416d86;
  border-color:#7da9c0;
}
.evidence-note{
  margin-top:50px;
  padding:18px 20px;
  border-left:2px solid #a9cadc;
  background:#f8fbfd;
}
.evidence-note strong{
  display:block;
  margin-bottom:5px;
  font-size:11px;
  font-weight:500;
  color:#5c7d90;
}
.evidence-note p{
  margin:0;
  max-width:860px;
  font-size:11px;
  line-height:1.65;
  color:#7d8b93;
}
@media(max-width:900px){
  .evidence-card{
    grid-template-columns:1fr;
    gap:10px;
  }
}

/* V6 — louder positioning, still restrained typography */
.hero-v6{
  padding:78px 0 28px;
  border-bottom:1px solid var(--line);
}
.hero-grid-v6{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(300px,.72fr);
  gap:64px;
  align-items:start;
}
.hero-v6 h1{
  max-width:820px;
  font-size:clamp(36px,4.4vw,50px);
}
.hero-lead{
  max-width:790px;
  font-size:17px;
}
.hero-principle{
  margin-top:34px;
  padding:24px 26px;
  border-left:3px solid #92bed7;
  background:#f7fbfd;
}
.principle-label{
  display:block;
  margin-bottom:7px;
  font-size:9px;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:#6a92aa;
}
.hero-principle h2{
  margin:0 0 8px;
  font-size:26px;
  line-height:1.25;
}
.hero-principle p{
  margin:0;
  max-width:760px;
  font-size:14px;
  color:#657781;
}
.hero-aside-v6{
  position:relative;
  margin-top:18px;
  padding:26px 24px 23px;
  border:1px solid #dbe9f1;
  border-radius:18px;
  background:#fff;
  box-shadow:0 8px 26px rgba(70,100,120,.06);
}
.stamp{
  position:absolute;
  top:18px;
  right:18px;
  padding:4px 7px;
  border:1px solid #a9c8da;
  border-radius:4px;
  font-size:8px;
  letter-spacing:.12em;
  color:#7095aa;
}
.aside-kicker{
  margin:0 44px 9px 0;
  font-size:9px;
  letter-spacing:.13em;
  text-transform:uppercase;
  color:#6f94aa;
}
.aside-quote{
  margin:0 0 11px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:24px;
  line-height:1.28;
  color:#506874;
}
.aside-body{
  margin:0 0 18px;
  font-size:12px;
  line-height:1.65;
  color:#74838c;
}
.aside-rule{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:7px 12px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.aside-rule span{
  font-size:10px;
  color:#67879a;
}
.hero-proof-strip{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  padding-top:25px;
  padding-bottom:22px;
}
.hero-proof-strip span{
  font-size:9px;
  letter-spacing:.03em;
  color:#87969f;
}
.credibility-wall{
  background:#f5fafc;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cred-grid{
  margin-top:40px;
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:1px;
  background:#dfeaf0;
  border:1px solid #dfeaf0;
}
.cred-grid article{
  min-height:150px;
  padding:20px 19px;
  background:#fff;
}
.cred-grid strong{
  display:block;
  margin-bottom:8px;
  font-size:12px;
  font-weight:500;
  line-height:1.45;
  color:#4e7287;
}
.cred-grid span{
  display:block;
  font-size:11px;
  line-height:1.63;
  color:#71808a;
}
.cred-close{
  margin:30px 0 0;
  max-width:850px;
  font-family:"Source Serif 4",Georgia,serif;
  font-size:20px;
  line-height:1.5;
  color:#607986;
}
@media(max-width:1000px){
  .cred-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .hero-grid-v6{grid-template-columns:1fr;gap:28px}
}
@media(max-width:680px){
  .cred-grid{grid-template-columns:1fr}
  .hero-v6 h1{font-size:36px}
  .hero-proof-strip{gap:8px 14px}
}