/* ===== Base ===== */
:root{
  --brand:#1b5cff;
  --brand-2:#00c2ff;
  --brand-dark:#0b1b3a;
  --ink:#0e1726;
  --text:#4a5568;
  --line:#e6ebf5;
  --soft:#f5f8ff;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(16,42,92,.08);
  --shadow-hover:0 18px 45px rgba(27,92,255,.16);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--text);background:var(--white);line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:.25s}
ul{list-style:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
svg.ico,svg.ico-lg{fill:currentColor;width:20px;height:20px}
svg.ico-lg{width:38px;height:38px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.25s;white-space:nowrap;
}
.btn-lg{padding:14px 34px;font-size:16px}
.btn-primary{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 20px rgba(27,92,255,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(27,92,255,.4)}
.btn-ghost{color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-outline{border:1px solid rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.08)}
.btn-outline:hover{background:#fff;color:var(--brand)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.2)}
.btn-outline-light{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14)}

/* ===== Nav ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.3s;
}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(16,42,92,.06)}
.nav-inner{height:70px;display:flex;align-items:center;gap:24px}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:.5px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;color:var(--ink);font-weight:800;font-size:17px}
.logo-text small{font-size:10px;font-weight:600;letter-spacing:2px;color:#93a3bd}
.nav-menu{margin-left:auto;display:flex;gap:30px}
.nav-menu a{font-size:15px;color:#33405a;font-weight:500;position:relative}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:.25s;
}
.nav-menu a:hover{color:var(--brand)}
.nav-menu a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;padding:150px 0 0;overflow:hidden;color:#fff}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(1100px 520px at 78% 8%,rgba(0,194,255,.35),transparent 60%),
    radial-gradient(900px 500px at 12% 0%,rgba(27,92,255,.45),transparent 60%),
    linear-gradient(160deg,#0a1a3d 0%,#0d2b6b 45%,#0a1a3d 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  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:radial-gradient(ellipse at 50% 30%,#000,transparent 72%);
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center;padding-bottom:70px}
.badge{
  display:inline-block;padding:6px 16px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#cfe0ff;margin-bottom:22px;
}
.hero h1{font-size:48px;line-height:1.25;color:#fff;font-weight:800;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,#7fd8ff,#c9ddff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{margin-top:20px;font-size:16.5px;color:#c2d3f0;max-width:600px}
.hero-btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-hotline{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-size:14.5px;color:#a8c1ea;
}
.hero-hotline strong{color:#fff;font-size:17px;letter-spacing:.5px}

/* orbit */
.hero-visual{display:grid;place-items:center}
.orbit{position:relative;width:360px;height:360px;max-width:100%;display:grid;place-items:center}
.orbit::before,.orbit::after{
  content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.16);
}
.orbit::before{inset:0}
.orbit::after{inset:62px;border-style:dashed;animation:spin 26s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.orbit-core{
  width:150px;height:150px;border-radius:50%;display:grid;place-items:center;gap:6px;
  background:linear-gradient(150deg,rgba(27,92,255,.85),rgba(0,194,255,.7));
  box-shadow:0 0 60px rgba(0,194,255,.45);color:#fff;
}
.orbit-core span{font-size:12px;letter-spacing:4px;font-weight:700}
.orbit-dot{
  position:absolute;padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);color:#fff;
  backdrop-filter:blur(6px);animation:float 4s ease-in-out infinite;
}
.orbit-dot.d1{top:26px;left:50%;transform:translateX(-50%)}
.orbit-dot.d2{bottom:30px;left:50%;transform:translateX(-50%);animation-delay:.8s}
.orbit-dot.d3{left:-4px;top:50%;transform:translateY(-50%);animation-delay:1.6s}
.orbit-dot.d4{right:-4px;top:50%;transform:translateY(-50%);animation-delay:2.4s}
@keyframes float{0%,100%{margin-top:0}50%{margin-top:-10px}}

/* stats */
.stats{
  position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:0;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);backdrop-filter:blur(10px);overflow:hidden;
}
.stat{padding:24px 10px;text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:30px;font-weight:800;color:#fff;line-height:1.2}
.stat span{font-size:13.5px;color:#b3c8ea}

/* ===== Section ===== */
.section{padding:88px 0}
.section-soft{background:var(--soft)}
.sec-title{font-size:32px;font-weight:800;color:var(--ink);text-align:center;letter-spacing:-.3px}
.sec-title.left{text-align:left}
.sec-title::after{
  content:"";display:block;width:56px;height:4px;border-radius:4px;margin:14px auto 0;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.sec-title.left::after{margin-left:0}
.sec-sub{text-align:center;margin-top:14px;font-size:16px;color:#6b7a93}

/* ===== Grid & Card ===== */
.grid{display:grid;gap:24px;margin-top:42px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:.3s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:transparent}

/* activity */
.act-card{display:block}
.act-tag{
  display:inline-block;padding:4px 12px;border-radius:8px;font-size:12px;font-weight:700;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:14px;
}
.act-tag-warm{background:linear-gradient(120deg,#ff7a45,#ffb020)}
.act-card h3{font-size:19px;color:var(--ink);margin-bottom:8px}
.act-card p{font-size:14.5px;min-height:52px}
.link{display:inline-block;margin-top:14px;font-size:14.5px;font-weight:600;color:var(--brand)}
.act-card:hover .link,.prod:hover .link{transform:translateX(4px)}

/* product */
.prod-ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(140deg,rgba(27,92,255,.12),rgba(0,194,255,.16));color:var(--brand);
}
.prod-ico svg{width:26px;height:26px;fill:currentColor}
.prod h3{font-size:19px;color:var(--ink);margin-bottom:10px}
.prod p{font-size:14.5px}
.feat{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.feat li{font-size:13.8px;color:#5b6b85;padding-left:18px;position:relative}
.feat li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
}

/* ===== Solutions ===== */
.tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:36px}
.tab{
  padding:9px 24px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:15px;font-weight:600;color:#4a5568;cursor:pointer;transition:.25s;
}
.tab:hover{border-color:var(--brand);color:var(--brand)}
.tab.active{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent;box-shadow:0 8px 20px rgba(27,92,255,.25)}
.sol-panel{margin-top:34px}
.sol-head{
  background:linear-gradient(120deg,rgba(27,92,255,.06),rgba(0,194,255,.08));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px 32px;
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
}
.sol-head h3{font-size:24px;color:var(--ink);margin-bottom:10px}
.sol-head p{font-size:15px;color:#5b6b85}
.sol-block{margin-top:26px}
.sol-block h4{font-size:17px;color:var(--ink);margin-bottom:16px;padding-left:12px;border-left:4px solid var(--brand)}
.sol-adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.adv-box b{display:block;font-size:15.5px;color:var(--ink);margin-bottom:8px}
.adv-box span{font-size:13.8px;line-height:1.7}
.sol-arch{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:10px}
.arch-item{
  background:#fff;border:1px dashed var(--line);border-radius:12px;padding:16px 18px;font-size:14px;color:#4a5568;
}
.pains{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.pain b{display:block;color:#e0533d;font-size:14.5px;margin-bottom:8px}
.pain span{font-size:13.6px}
.sol-metrics{display:flex;gap:26px;margin-top:6px}
.metric{text-align:center}
.metric b{display:block;font-size:14px;color:var(--ink)}
.metric span{font-size:13px;color:#7d8ca6}

/* ===== Market ===== */
.market-wrap{margin-top:42px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:start}
.market-wrap .grid{margin-top:0;grid-template-columns:repeat(3,1fr);gap:18px}
.market{
  text-align:center;font-weight:600;color:var(--ink);font-size:15.5px;padding:26px 18px;
}
.market:hover{color:var(--brand)}
.market-adv{display:flex;flex-direction:column;gap:18px;background:linear-gradient(150deg,#0d2b6b,#123a8a);border:0;color:#fff}
.adv-item b{display:block;font-size:16px;color:#fff;margin-bottom:4px}
.adv-item span{font-size:13.6px;color:#b9cdf0}

/* ===== Why ===== */
.why-ico{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(140deg,rgba(27,92,255,.12),rgba(0,194,255,.16));color:var(--brand);
}
.why-ico svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.why h3{font-size:18px;color:var(--ink);margin-bottom:10px}
.why p{font-size:14.3px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips span{padding:4px 12px;border-radius:999px;font-size:12.5px;background:var(--soft);color:var(--brand);font-weight:600}

/* ===== Infra ===== */
.infra-grid{display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:24px;margin-top:42px}
.node h3{font-size:20px;color:var(--ink)}
.node p{font-size:14.5px;margin-top:6px}
.node-dot{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:#12b76a;position:relative;padding-left:16px}
.node-dot::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:#12b76a;box-shadow:0 0 0 4px rgba(18,183,106,.18)}
.node-map{display:flex;flex-direction:column;justify-content:space-between}
.world{
  position:relative;height:180px;border-radius:12px;
  background:
    radial-gradient(circle at 22% 45%,rgba(27,92,255,.16),transparent 30%),
    radial-gradient(circle at 76% 48%,rgba(0,194,255,.18),transparent 30%),
    linear-gradient(140deg,#eef4ff,#f9fbff);
  border:1px solid var(--line);
}
.pin{position:absolute;transform:translate(-50%,-50%)}
.pin i{display:block;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 6px rgba(27,92,255,.16);animation:pulse 2s infinite}
.pin em{position:absolute;top:16px;left:50%;transform:translateX(-50%);font-size:12px;font-style:normal;color:var(--ink);white-space:nowrap;font-weight:600}
.p-us{left:22%;top:45%}
.p-hk{left:76%;top:48%}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(27,92,255,.4)}70%{box-shadow:0 0 0 14px rgba(27,92,255,0)}100%{box-shadow:0 0 0 0 rgba(27,92,255,0)}}
.certs{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:34px}
.cert{
  padding:9px 22px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--ink);box-shadow:var(--shadow);
}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:start}
.about-lead{margin-top:20px;font-size:15.5px}
.about-slogan{
  display:inline-block;margin-top:18px;padding:8px 20px;border-radius:999px;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;font-weight:600;font-size:14.5px;
}
.culture{margin:26px 0;display:flex;flex-direction:column;gap:14px}
.culture-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 20px;display:flex;gap:18px;align-items:center}
.culture-item b{color:var(--brand);font-size:15px;min-width:64px}
.culture-item span{color:#4a5568;font-size:14.5px}
.partner h3{font-size:18px;color:var(--ink);margin-bottom:8px}
.partner p{font-size:14px}
.partner-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.partner-list a{
  padding:7px 16px;border-radius:10px;background:var(--soft);font-size:13.5px;font-weight:600;color:#4a5568;
}
.partner-list a:hover{background:var(--brand);color:#fff}

/* ===== CTA ===== */
.cta{
  padding:78px 0;color:#fff;text-align:center;
  background:linear-gradient(120deg,#0a1a3d,#0d2b6b 55%,#0a1a3d);
}
.cta h2{font-size:32px;font-weight:800}
.cta p{margin-top:14px;color:#b3c8ea;font-size:15.5px}
.cta-btns{display:flex;justify-content:center;gap:16px;margin-top:30px;flex-wrap:wrap}

/* ===== Footer ===== */
.footer{background:#081227;color:#93a5c2;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:34px}
.footer .logo-text,.footer .logo-text small{color:#fff}
.footer .logo-text small{color:#7d93b8}
.f-phone{margin-top:18px;font-size:15px;color:#c8d7f0}
.f-phone strong{color:#fff;font-size:19px}
.f-desc{margin-top:12px;font-size:13.2px;line-height:1.9;color:#7d93b8}
.f-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.f-col a{display:block;font-size:13.6px;padding:5px 0}
.f-col a:hover{color:#7fd8ff;transform:translateX(3px)}
.f-links{
  display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:42px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.1);font-size:13.2px;
}
.f-links span{color:#5f739a}
.f-links a:hover{color:#7fd8ff}
.f-bottom{
  display:flex;flex-wrap:wrap;gap:8px 26px;margin-top:20px;font-size:12.6px;color:#5f739a;
}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero-visual{display:none}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .sol-adv,.sol-arch,.pains{grid-template-columns:repeat(2,1fr)}
  .infra-grid{grid-template-columns:1fr 1fr}
  .node-map{grid-column:1/-1}
  .market-wrap,.about-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr 1fr}
  .footer-grid .f-col:first-child{grid-column:1/-1}
}
@media (max-width:768px){
  .nav-menu{
    position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;gap:0;
    padding:10px 24px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-menu a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-menu a::after{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-ghost{display:none}
  .hero{padding-top:120px}
  .hero h1{font-size:32px}
  .hero-desc{font-size:15px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{border-bottom:1px solid rgba(255,255,255,.12)}
  .section{padding:64px 0}
  .sec-title{font-size:26px}
  .grid-3,.grid-4,.sol-adv,.sol-arch,.pains,.infra-grid,.market-wrap .grid{grid-template-columns:1fr}
  .sol-head{grid-template-columns:1fr}
  .cta h2{font-size:25px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}