/* ===== Tokens ===== */
:root{
  --navy:      #0D2D53;
  --blue:      #02597B;
  --teal:      #028991;
  --cream:     #EDEDE2;
  --ink:       #10202E;
  --ink-soft:  #46586A;
  --white:     #FFFFFF;
  --line:      rgba(13,45,83,0.12);

  --font-display: "Space Grotesk", "Manrope", sans-serif;
  --font-body: "Manrope", sans-serif;

  --radius: 14px;
  --wrap: 1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  overflow-x:hidden;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;}
h1,h2,h3{
  font-family:var(--font-display);
  color:var(--navy);
  margin:0 0 .5em;
  line-height:1.15;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;}
.wrap{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}

/* Focus visibility */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 24px;
  border-radius:999px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:15px;
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--teal);color:var(--white);}
.btn-primary:hover{background:#02747a;}
.btn-ghost{border-color:var(--navy);color:var(--navy);}
.btn-ghost:hover{background:var(--navy);color:var(--white);}
.btn-text{color:var(--navy);padding:12px 4px;}
.btn-block{width:100%;justify-content:center;}
.btn-rect{border-radius:10px;}

.demo-dropdown{position:relative;}
.demo-dropdown > .btn{font:inherit;}
.demo-menu{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  display:flex;
  gap:10px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  padding:10px;
  box-shadow:0 16px 36px rgba(13,45,83,0.18);
  z-index:30;
}
.demo-menu[hidden]{display:none;}
.demo-menu a{
  white-space:nowrap;
  padding:10px 18px;
  border-radius:8px;
  background:var(--cream);
  color:var(--navy);
  font-weight:600;
  font-size:14px;
  text-decoration:none;
  transition:background .15s ease, color .15s ease;
}
.demo-menu a:hover,
.demo-menu a:focus-visible{background:var(--teal);color:var(--white);}

@media (max-width:420px){
  .demo-menu{flex-direction:column;}
}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:20;
  background:var(--cream);
  border-bottom:1px solid var(--line);
}
.header-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{width:32px;height:32px;flex:none;}
.brand-mark--small{width:26px;height:26px;}
.brand-name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:20px;
  color:var(--navy);
}
.main-nav{display:flex;gap:28px;font-size:15px;font-weight:500;}
.main-nav a{text-decoration:none;color:var(--ink-soft);}
.main-nav a:hover{color:var(--navy);}
.nav-cta{padding:10px 20px;font-size:14px;}

@media (max-width:820px){
  .main-nav{display:none;}
}

/* ===== Hero ===== */
.hero{padding:72px 0 56px;}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  font-family:var(--font-body);
  font-weight:600;
  font-size:14px;
  color:var(--teal);
  margin:0 0 14px;
}
.eyebrow--light{color:#7fd8d6;}
.hero h1{
  font-size:clamp(32px,4.4vw,48px);
  max-width:16ch;
}
.hero-lead{
  max-width:52ch;
  color:var(--ink-soft);
  font-size:17px;
}
.hero-actions{display:flex;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap;}

.hero-visual{display:flex;justify-content:center;}
.network-svg{width:100%;max-width:420px;}
.node-label{
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  fill:var(--white);
}
.node-label--main{font-size:16px;}
.links path{stroke:var(--navy);opacity:.35;}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;max-width:280px;margin:0 auto;}
}

/* ===== Sections ===== */
.section{padding:64px 0;}
.section-tinted{background:var(--white);}
.section-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:48px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);max-width:14ch;}
.section-head--center{text-align:center;max-width:640px;margin:0 auto 40px;}
.section-head--center h2{margin-left:auto;margin-right:auto;max-width:none;}
.section-body p{color:var(--ink-soft);max-width:62ch;}
.note{
  font-size:14.5px;
  color:var(--ink-soft);
  border-left:3px solid var(--teal);
  padding-left:16px;
}

@media (max-width:820px){
  .section-grid{grid-template-columns:1fr;gap:20px;}
}

/* Check list */
.check-list{list-style:none;margin:0 0 22px;padding:0;display:grid;gap:14px;}
.check-list li{
  position:relative;
  padding-left:28px;
  color:var(--ink);
}
.check-list li::before{
  content:"";
  position:absolute;left:0;top:7px;
  width:14px;height:14px;
  border-radius:4px;
  background:var(--teal);
}

/* Benefit cards */
.benefit-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.benefit-card{
  background:var(--cream);
  border-radius:var(--radius);
  padding:28px 24px;
}
.benefit-card h3{font-size:19px;margin-bottom:14px;}
.benefit-card ul{margin:0;padding-left:18px;color:var(--ink-soft);font-size:15px;}
.benefit-card li{margin-bottom:8px;}

@media (max-width:820px){
  .benefit-grid{grid-template-columns:1fr;}
}

/* Steps */
.step-list{list-style:none;margin:0;padding:0;display:grid;gap:18px;max-width:640px;}
.step-list li{display:flex;gap:16px;align-items:flex-start;}
.step-num{
  flex:none;
  width:32px;height:32px;
  border-radius:50%;
  background:var(--navy);
  color:var(--white);
  font-family:var(--font-display);
  font-weight:600;
  font-size:14px;
  display:flex;align-items:center;justify-content:center;
}
.step-text{padding-top:5px;color:var(--ink-soft);}

/* Architecture */
.arch-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.arch-card{
  background:var(--cream);
  border-radius:var(--radius);
  padding:30px 26px;
}
.arch-card h3{font-size:20px;}
.arch-card > p{color:var(--ink-soft);font-size:15px;}
.arch-card ul{margin:0;padding-left:18px;color:var(--ink);font-size:15px;}
.arch-card li{margin-bottom:8px;}

@media (max-width:820px){
  .arch-grid{grid-template-columns:1fr;}
}

/* ===== CTA / contact ===== */
.cta-section{
  background:var(--navy);
  color:var(--white);
}
.cta-section h2{color:var(--white);font-size:clamp(24px,3vw,32px);max-width:20ch;}
.cta-lead{color:#c7d4e0;max-width:44ch;}
.cta-single{
  max-width:640px;
}
.cta-btn{
  margin-top:8px;
}

/* ===== Footer ===== */
.site-footer{
  background:var(--navy);
  color:#c7d4e0;
  padding-top:32px;
}
.footer-grid{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding-bottom:24px;
  border-bottom:1px solid rgba(255,255,255,0.12);
}
.footer-brand{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-display);
  font-weight:700;
  color:var(--white);
  font-size:17px;
}
.footer-nav{
  display:flex;
  flex-direction:column;
  gap:16px;
  font-size:14px;
}
.footer-nav-row{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.footer-nav a{text-decoration:none;color:#c7d4e0;}
.footer-nav a:hover{color:var(--white);}

@media (max-width:640px){
  .footer-nav-row{flex-wrap:wrap;}
}
.footer-legal{
  padding:18px 24px 28px;
  font-size:13px;
  color:#95a8ba;
}
.footer-legal p{margin:0 0 6px;}
.footer-legal strong{color:#c7d4e0;}