/* =========================================================
   DCDATA — shared stylesheet
   Tokens: ink #0B0E14, ink-soft #171B24, paper #F7F8F6,
   leaf gradient #34D399 -> #14B8A6, solar #F5B942
   Display: Space Grotesk / Body: Inter / Data: IBM Plex Mono
   ========================================================= */

:root{
  --ink:#0B0E14;
  --ink-soft:#171B24;
  --ink-line: rgba(255,255,255,0.10);
  --paper:#F7F8F6;
  --paper-dim:#EEF0EC;
  --line:#E1E4DE;
  --muted:#5B6472;
  --muted-dark:#9AA3AF;
  --white:#FFFFFF;
  --leaf-a:#34D399;
  --leaf-b:#14B8A6;
  --leaf-grad: linear-gradient(135deg, var(--leaf-a), var(--leaf-b));
  --solar:#F5B942;
  --danger:#E2694B;
  --radius:14px;
  --maxw:1180px;
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.08;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

/* ---------- eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--leaf-b);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--leaf-grad);
  box-shadow:0 0 0 3px rgba(52,211,153,.18);
}
section .eyebrow.on-dark{color:#8FF3D2;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(11,14,20,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ink-line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;
  max-width:var(--maxw); margin:0 auto;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand img{height:30px;width:auto;}
.brand-word{
  font-family:var(--font-display);
  font-weight:700;
  font-size:16px;
  letter-spacing:.04em;
  color:var(--white);
}
.brand-word .leaf{
  background:var(--leaf-grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:flex;gap:2px;align-items:center;}
.nav-links a{
  color:#C7CCD4;
  font-size:14.5px;
  padding:9px 13px;
  border-radius:8px;
  transition:background .15s ease, color .15s ease;
  white-space:nowrap;
}
.nav-links a:hover, .nav-links a.active{
  background:rgba(255,255,255,.07);
  color:var(--white);
}
.nav-cta{
  margin-left:8px;
  background:var(--leaf-grad);
  color:#04140F !important;
  font-weight:600;
  padding:9px 16px !important;
  border-radius:8px;
}
.nav-toggle{
  display:none;
  background:none;border:1px solid var(--ink-line);border-radius:8px;
  width:40px;height:36px;color:var(--white);cursor:pointer;
}
@media (max-width:920px){
  .nav-links{
    position:fixed; inset:60px 0 0 0; z-index:99;
    background:var(--ink); flex-direction:column; align-items:stretch;
    padding:14px; gap:4px; transform:translateY(-8px);
    opacity:0; pointer-events:none; transition:opacity .18s ease, transform .18s ease;
    border-top:1px solid var(--ink-line);
    max-height:calc(100vh - 60px); overflow:auto;
  }
  .nav-links.open{opacity:1; pointer-events:auto; transform:translateY(0);}
  .nav-links a{padding:13px 10px;font-size:16px;}
  .nav-cta{margin-left:0; text-align:center;}
  .nav-toggle{display:block;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-body);
  font-weight:600;font-size:14.5px;
  padding:13px 22px;
  border-radius:9px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}
.btn-primary{
  background:var(--leaf-grad); color:#04140F;
  box-shadow:0 10px 24px -10px rgba(20,184,166,.55);
}
.btn-primary:hover{transform:translateY(-1px); box-shadow:0 14px 28px -10px rgba(20,184,166,.65);}
.btn-ghost-dark{
  background:transparent;border-color:var(--ink-line);color:var(--white);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,.06);}
.btn-ghost-light{
  background:transparent;border-color:var(--line);color:var(--ink);
}
.btn-ghost-light:hover{background:var(--paper-dim);}
.btn-outline-ink{
  background:var(--ink); color:var(--white);
}
.btn-outline-ink:hover{transform:translateY(-1px);}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(1100px 520px at 15% -10%, rgba(52,211,153,.16), transparent 60%),
    radial-gradient(900px 460px at 100% 0%, rgba(20,184,166,.12), transparent 55%),
    var(--ink);
  color:var(--white);
  padding:96px 0 72px;
  position:relative;
  overflow:hidden;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
@media (max-width:980px){ .hero-grid{grid-template-columns:1fr;} }
.hero h1{font-size:clamp(34px,4.6vw,58px);color:var(--white);}
.hero h1 .accent{
  background:var(--leaf-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:18px;color:#B7BEC8;max-width:52ch;margin-bottom:28px;}
.page-hero{
  background:var(--ink); color:var(--white); padding:74px 0 58px;
  position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle, rgba(52,211,153,.22), transparent 70%);
}
.page-hero h1{color:var(--white);font-size:clamp(30px,4vw,46px);max-width:16ch;}
.page-hero .hero-sub{margin-bottom:0;}

/* ---------- stat band ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--ink-line);
  border:1px solid var(--ink-line);
  border-radius:var(--radius);
  overflow:hidden;
  margin-top:44px;
}
.stat-cell{background:rgba(255,255,255,.03);padding:22px 22px;}
.stat-num{
  font-family:var(--font-mono);font-weight:600;font-size:clamp(22px,2.6vw,30px);
  color:var(--white);
}
.stat-num .accent{color:#5EEAC4;}
.stat-label{font-size:13px;color:var(--muted-dark);margin-top:6px;line-height:1.4;}
@media (max-width:700px){ .stat-band{grid-template-columns:1fr;} }

/* ---------- sections ---------- */
.section{padding:84px 0;}
.section-tight{padding:56px 0;}
.section-dark{background:var(--ink);color:var(--white);}
.section-soft{background:var(--paper-dim);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.4vw,40px);}
.section-dark .section-head h2{color:var(--white);}
.lede{font-size:18px;color:var(--muted);max-width:64ch;}
.section-dark .lede{color:#B7BEC8;}

/* ---------- grids / cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media (max-width:920px){ .grid-3,.grid-4{grid-template-columns:1fr 1fr;} .grid-2{grid-template-columns:1fr;} }
@media (max-width:640px){ .grid-3,.grid-4{grid-template-columns:1fr;} }

.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:14.5px;margin-bottom:0;}
.card .num-tag{
  font-family:var(--font-mono);font-size:12.5px;color:var(--leaf-b);
  margin-bottom:12px;display:block;
}
.card-dark{
  background:var(--ink-soft);border:1px solid var(--ink-line);color:var(--white);
}
.card-dark h3{color:var(--white);}
.card-dark p{color:var(--muted-dark);}

.icon-tile{
  width:44px;height:44px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--leaf-grad);
  margin-bottom:16px;
  color:#04140F;
}
.icon-tile svg{width:22px;height:22px;stroke:#04140F;}

/* ---------- layer diagram cards (3 layers) ---------- */
.layer-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.layer-cell{background:var(--white);padding:30px 26px;border-right:1px solid var(--line);}
.layer-cell:last-child{border-right:none;}
.layer-cell .tag{font-family:var(--font-mono);font-size:12px;color:var(--leaf-b);letter-spacing:.08em;text-transform:uppercase;}
@media (max-width:820px){ .layer-row{grid-template-columns:1fr;} .layer-cell{border-right:none;border-bottom:1px solid var(--line);} }

/* ---------- ledger / ticker (signature element) ---------- */
.ledger{
  background:var(--ink-soft);
  border:1px solid var(--ink-line);
  border-radius:var(--radius);
  overflow:hidden;
}
.ledger-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--ink-line);
}
.ledger-head .title{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--muted-dark);text-transform:uppercase;}
.live-dot{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:12px;color:#5EEAC4;}
.live-dot .dot{width:7px;height:7px;border-radius:50%;background:#34D399;box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 1.8s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(52,211,153,.55);}
  70%{box-shadow:0 0 0 8px rgba(52,211,153,0);}
  100%{box-shadow:0 0 0 0 rgba(52,211,153,0);}
}
.ledger-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:13px;}
.ledger-table th{
  text-align:left;font-weight:500;color:var(--muted-dark);
  padding:10px 20px;border-bottom:1px solid var(--ink-line);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;
}
.ledger-table td{padding:11px 20px;border-bottom:1px solid rgba(255,255,255,.05);color:#DDE2E8;}
.ledger-table tr:last-child td{border-bottom:none;}
.ledger-table .ok{color:#5EEAC4;}
.ledger-table .node-id{color:var(--white);}
.ledger-foot{padding:14px 20px;font-size:12.5px;color:var(--muted-dark);border-top:1px solid var(--ink-line);}

/* ---------- node diagram (SVG hero graphic) ---------- */
.node-diagram{
  background:rgba(255,255,255,.03);
  border:1px solid var(--ink-line);
  border-radius:18px;
  padding:22px;
}
.flow-line{
  stroke:url(#flowGrad);
  stroke-width:2.5;
  fill:none;
  stroke-dasharray:6 7;
  animation:dash 1.6s linear infinite;
}
@keyframes dash{ to{ stroke-dashoffset:-52; } }
.node-diagram text{font-family:var(--font-mono);}

/* ---------- table (specs / comparisons) ---------- */
.data-table{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.data-table th{
  background:var(--paper-dim);text-align:left;padding:14px 18px;font-size:13px;
  color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-family:var(--font-mono);font-weight:500;
  border-bottom:1px solid var(--line);
}
.data-table td{padding:16px 18px;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top;}
.data-table tr:last-child td{border-bottom:none;}
.data-table td strong{display:block;margin-bottom:2px;}
.table-wrap{overflow-x:auto;}

/* ---------- roadmap / timeline ---------- */
.roadmap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media (max-width:920px){ .roadmap{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .roadmap{grid-template-columns:1fr;} }
.phase{
  border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;background:var(--white);
  position:relative;
}
.phase .phase-num{
  font-family:var(--font-mono);font-size:12.5px;color:var(--leaf-b);letter-spacing:.08em;
}
.phase h3{font-size:19px;margin:8px 0 4px;}
.phase .phase-tag{
  display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted);background:var(--paper-dim);padding:3px 8px;border-radius:5px;margin-bottom:10px;
}
.phase p{color:var(--muted);font-size:14px;margin:0;}
.roadmap-connector{height:2px;background:linear-gradient(90deg, var(--leaf-a), var(--leaf-b));margin:0 0 -1px;opacity:.5;}

/* ---------- quote ---------- */
.quote-block{
  border-left:3px solid;
  border-image:var(--leaf-grad) 1;
  padding:6px 0 6px 24px;
  font-family:var(--font-display);
  font-size:clamp(20px,2.6vw,28px);
  font-weight:500;
  line-height:1.35;
  max-width:820px;
}
.section-dark .quote-block{color:var(--white);}

/* ---------- process steps ---------- */
.steps{counter-reset:step;}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:20px;padding:22px 0;border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line);}
.step-num{
  font-family:var(--font-mono);font-size:14px;color:var(--leaf-b);
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{color:var(--muted);margin:0;}

/* ---------- FAQ ---------- */
.faq-item{border-top:1px solid var(--line);padding:20px 0;}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-display);font-weight:600;font-size:16.5px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:22px;color:var(--leaf-b);font-family:var(--font-body);transition:transform .2s ease;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{color:var(--muted);margin:12px 0 0;font-size:15px;max-width:70ch;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);
  color:var(--white);
  border-radius:22px;
  padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle, rgba(20,184,166,.25), transparent 70%);
}
.cta-band h2{color:var(--white);font-size:clamp(24px,3vw,34px);max-width:16ch;margin-bottom:8px;}
.cta-band p{color:var(--muted-dark);margin:0;max-width:44ch;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--muted-dark);padding:56px 0 28px;border-top:1px solid var(--ink-line);}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;padding-bottom:36px;}
@media (max-width:820px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .footer-grid{grid-template-columns:1fr;} }
.footer-grid h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-dark);margin-bottom:14px;}
.footer-grid a{display:block;color:#C7CCD4;font-size:14px;padding:5px 0;}
.footer-grid a:hover{color:var(--white);}
.footer-brand{max-width:280px;}
.footer-brand p{font-size:13.5px;color:var(--muted-dark);}
.footer-bottom{
  border-top:1px solid var(--ink-line);padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;
}

/* ---------- utility ---------- */
.mt-0{margin-top:0;}
.text-center{text-align:center;margin-left:auto;margin-right:auto;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  padding:5px 11px;border-radius:20px;border:1px solid var(--line);color:var(--muted);
}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
@media (max-width:900px){ .two-col{grid-template-columns:1fr;} }
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.divider{height:1px;background:var(--line);border:none;margin:56px 0;}
.section-dark .divider{background:var(--ink-line);}

.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

.badge-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.badge{
  font-family:var(--font-mono);font-size:12px;color:var(--muted-dark);
  border:1px solid var(--ink-line);padding:6px 12px;border-radius:20px;
}