:root{
  --bg:#07111f;
  --bg2:#0b1728;
  --panel:#0d1b2e;
  --text:#eef7ff;
  --muted:#a7b7c9;
  --line:rgba(255,255,255,.10);
  --cyan:#79d8ff;
  --green:#4ee0a1;
  --ink:#0c1624;
  --paper:#f5f8fb;
  --paper2:#ffffff;
  --paperText:#132237;
  --paperMuted:#607087;
  --max:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--paperText);
  background:var(--paper);
  line-height:1.65;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto}

.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  background:rgba(7,17,31,.72);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-wrap{
  width:min(var(--max),calc(100% - 40px));margin:0 auto;
  height:76px;display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-mark{width:36px;height:36px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-size:18px;letter-spacing:.08em}
.brand-text small{font-size:9px;letter-spacing:.28em;color:#93a8bc;margin-top:5px}
.nav{display:flex;gap:30px;align-items:center}
.nav a{color:#d8e3ec;font-size:14px}
.nav a:hover{color:#fff}
.nav-cta{border:1px solid rgba(121,216,255,.45);padding:9px 15px;border-radius:999px}
.menu-btn{display:none;border:0;background:none;padding:6px}
.menu-btn span{display:block;width:24px;height:2px;background:#fff;margin:5px 0}

.hero{
  min-height:760px;background:
  radial-gradient(circle at 75% 24%,rgba(78,224,161,.11),transparent 27%),
  radial-gradient(circle at 63% 48%,rgba(121,216,255,.10),transparent 30%),
  var(--bg);
  position:relative;overflow:hidden;color:var(--text);
  padding-top:76px;
}
.hero-grid-bg{
  position:absolute;inset:0;opacity:.15;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(to bottom,black,transparent 88%);
}
.hero-inner{
  min-height:684px;display:grid;grid-template-columns:1.05fr .95fr;
  align-items:center;gap:40px;position:relative;z-index:2;
}
.eyebrow,.section-kicker{
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
}
.eyebrow{color:#7fd9ff;margin-bottom:25px}
.hero h1{font-size:clamp(52px,6vw,82px);line-height:1.08;margin:0;letter-spacing:-.045em;font-weight:750}
.hero h1 span{
  background:linear-gradient(90deg,#8bdfff,#62e6ad);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero-lead{max-width:650px;color:#b9c7d6;font-size:19px;margin:28px 0 32px}
.hero-actions{display:flex;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border-radius:10px;font-weight:700;font-size:14px}
.btn-primary{background:linear-gradient(90deg,#86ddff,#58e2aa);color:#07111f}
.btn-ghost{border:1px solid rgba(255,255,255,.22);color:#e8f2f8}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:34px}
.hero-tags span{border:1px solid rgba(255,255,255,.10);background:rgba(255,255,255,.035);color:#9fb0c0;padding:7px 10px;border-radius:7px;font-size:12px}
.hero-visual{position:relative;min-height:540px}
.network-art{width:100%;height:auto}
.visual-card{
  position:absolute;right:10%;bottom:14%;padding:16px 18px;width:220px;
  border:1px solid rgba(255,255,255,.13);border-radius:12px;
  background:rgba(7,17,31,.68);backdrop-filter:blur(12px);box-shadow:0 24px 50px rgba(0,0,0,.25)
}
.visual-card small{display:block;color:#73d9ff;font-size:10px;letter-spacing:.12em}
.visual-card strong{display:block;margin-top:3px;font-size:17px}
.orb{position:absolute;border-radius:50%;filter:blur(2px)}
.orb-a{width:180px;height:180px;right:-70px;top:180px;background:rgba(69,214,158,.09)}
.orb-b{width:120px;height:120px;left:35%;bottom:-30px;background:rgba(84,180,255,.07)}

.section{padding:108px 0}
.section-dark{background:var(--bg);color:var(--text)}
.section-kicker{color:#0780b8;margin-bottom:14px}
.section-dark .section-kicker{color:#73d9ff}
.split{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:start}
h2{font-size:clamp(34px,4vw,52px);line-height:1.15;margin:0;letter-spacing:-.035em}
.prose p{font-size:17px;color:var(--paperMuted);margin:0 0 18px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:44px}
.section-head>p{max-width:460px;color:var(--paperMuted);margin:0}
.section-dark .section-head>p{color:var(--muted)}

.cards{display:grid;gap:18px}
.cards.three{grid-template-columns:repeat(3,1fr)}
.card{
  min-height:390px;border:1px solid var(--line);background:rgba(255,255,255,.025);
  padding:30px;border-radius:18px;position:relative;overflow:hidden
}
.card.featured{background:linear-gradient(180deg,rgba(58,176,255,.10),rgba(78,224,161,.045))}
.card-no{color:#6f8296;font-size:12px;letter-spacing:.15em;margin-bottom:78px}
.card h3{font-size:27px;margin:0 0 16px}
.card p{color:#a8b8c7;margin:0 0 23px}
.card ul{padding-left:18px;color:#dce7ef;margin:0}
.card li{margin:7px 0}

.tech-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #d6dee8;border-bottom:1px solid #d6dee8}
.tech-step{padding:34px 24px 40px 0;border-right:1px solid #d6dee8;margin-right:24px}
.tech-step:last-child{border-right:0;margin-right:0}
.tech-step span{font-size:12px;color:#1381b2;font-weight:800;letter-spacing:.1em}
.tech-step h3{font-size:22px;margin:30px 0 12px}
.tech-step p{color:var(--paperMuted);margin:0}

.product-section{background:#fff}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.product-card{border:1px solid #dde5ed;border-radius:16px;padding:25px;min-height:280px;transition:.2s ease}
.product-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(25,50,75,.08)}
.product-icon{
  width:46px;height:46px;border-radius:12px;background:#edf8fc;color:#087cac;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;
}
.product-card h3{font-size:22px;margin:30px 0 10px}
.product-card p{color:var(--paperMuted);margin-bottom:28px}
.product-card a{font-size:13px;font-weight:800;color:#087cac}

.cooperation{display:grid;grid-template-columns:1fr 1fr;gap:95px;align-items:center}
.cooperation-lead{font-size:17px;color:#aebdcc;max-width:540px}
.coop-list{border-top:1px solid var(--line)}
.coop-list div{display:grid;grid-template-columns:70px 1fr;align-items:center;padding:19px 0;border-bottom:1px solid var(--line)}
.coop-list strong{color:#73d9ff;font-size:12px;letter-spacing:.12em}
.coop-list span{font-size:18px}

.contact-section{background:linear-gradient(180deg,#f7fafc,#eef4f8)}
.contact-grid{display:grid;grid-template-columns:1fr .8fr;gap:100px}
.contact-grid>div:first-child p{max-width:530px;color:var(--paperMuted);font-size:17px}
.contact-card{background:#fff;border:1px solid #dce5ed;border-radius:18px;padding:14px 26px;box-shadow:0 18px 50px rgba(32,56,79,.05)}
.contact-row{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid #e9eef3}
.contact-row:last-child{border-bottom:0}
.contact-row span{color:#8794a3;font-size:13px}
.contact-row strong{font-size:14px}
.contact-row.placeholder strong{color:#a2acb6;font-weight:500}

.footer{background:#050c16;color:#d9e4ec;padding:34px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.footer-brand{display:flex;gap:10px;align-items:center}
.footer-brand img{width:30px}
.footer-brand div{display:flex;flex-direction:column;line-height:1}
.footer-brand strong{font-size:14px}
.footer-brand small{font-size:8px;letter-spacing:.18em;color:#73889b;margin-top:5px}
.footer-copy{display:flex;gap:22px;color:#7e91a2;font-size:11px}
.icp-placeholder{opacity:.75}

@media (max-width:960px){
  .nav{display:none;position:absolute;top:76px;left:0;right:0;background:#091321;padding:20px;flex-direction:column;align-items:flex-start;border-top:1px solid var(--line)}
  .nav.open{display:flex}
  .menu-btn{display:block}
  .hero-inner,.split,.cooperation,.contact-grid{grid-template-columns:1fr}
  .hero-inner{padding:70px 0}
  .hero-visual{min-height:420px;max-width:620px}
  .cards.three{grid-template-columns:1fr}
  .card{min-height:0}
  .card-no{margin-bottom:36px}
  .tech-grid{grid-template-columns:1fr 1fr}
  .tech-step:nth-child(2){border-right:0}
  .product-grid{grid-template-columns:1fr 1fr}
  .section-head{align-items:flex-start;flex-direction:column}
}
@media (max-width:640px){
  .container,.nav-wrap{width:min(100% - 28px,var(--max))}
  .nav-wrap{height:68px}
  .nav{top:68px}
  .hero{padding-top:68px;min-height:auto}
  .hero-inner{min-height:auto}
  .hero h1{font-size:48px}
  .hero-lead{font-size:17px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-visual{min-height:330px}
  .visual-card{right:2%;bottom:6%}
  .section{padding:78px 0}
  .split,.cooperation,.contact-grid{gap:45px}
  .tech-grid,.product-grid{grid-template-columns:1fr}
  .tech-step,.tech-step:nth-child(2){border-right:0;border-bottom:1px solid #d6dee8;margin-right:0;padding-right:0}
  .footer-inner,.footer-copy{flex-direction:column;align-items:flex-start}
}