:root{
  --bg:#061018;
  --panel:#0c1c28;
  --ink:#e8f6ff;
  --mute:#8fb4c8;
  --line:rgba(80,220,255,.2);
  --glow:#4ee3ff;
  --route:#7dffc3;
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.75 "Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:
    radial-gradient(circle at 20% 20%,rgba(78,227,255,.12),transparent 28%),
    radial-gradient(circle at 80% 70%,rgba(125,255,195,.08),transparent 26%),
    var(--bg);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
nav{
  position:sticky;top:0;z-index:20;height:74px;
  background:rgba(6,16,24,.92);border-bottom:1px solid var(--line);
}
.nav,.hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{display:grid;gap:26px;align-items:center}
.nav{height:74px;grid-template-columns:auto 1fr auto}
.brand{display:flex;align-items:center;gap:8px;font-weight:800}
.brand b{color:var(--glow)}
.links{display:flex;justify-content:center;gap:22px;font-size:14px;color:var(--mute)}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:42px;padding:0 18px;border:0;border-radius:999px;font-weight:800;color:#061018;
  background:var(--glow);box-shadow:0 0 18px rgba(78,227,255,.4);
}
.button.ghost{background:transparent;color:var(--glow);border:1px solid var(--line);box-shadow:none}
.hero{padding:30px 0 64px}
.hero-grid{grid-template-columns:1.05fr .95fr;min-height:520px}
.eyebrow{color:var(--glow);font-size:12px;font-weight:800;letter-spacing:1.8px}
h1,h2{margin:10px 0 16px;line-height:1.18;font-weight:800}
.hero h1{font-size:clamp(32px,5vw,50px)}
p,.lead{color:var(--mute)}
.actions,.micro{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.micro span{padding:6px 12px;border:1px solid var(--line);border-radius:999px;font-size:12px}
.map{
  position:relative;padding:16px;background:var(--panel);border:1px solid var(--line);
  overflow:hidden;min-height:340px;
}
.map img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.72}
.net{position:absolute;inset:0;pointer-events:none}
.dot{
  position:absolute;width:8px;height:8px;border-radius:50%;background:var(--glow);
  box-shadow:0 0 12px var(--glow);
}
.dot:nth-child(1){left:18%;top:42%}
.dot:nth-child(2){left:48%;top:32%}
.dot:nth-child(3){left:72%;top:38%}
.dot:nth-child(4){left:62%;top:58%}
.arc{
  position:absolute;height:2px;background:linear-gradient(90deg,transparent,var(--route),transparent);
  box-shadow:0 0 8px var(--route);transform-origin:left center;opacity:.85;
}
.arc.a{left:19%;top:44%;width:30%;transform:rotate(-12deg)}
.arc.b{left:49%;top:34%;width:24%;transform:rotate(8deg)}
.arc.c{left:49%;top:36%;width:28%;transform:rotate(28deg)}
.lbl{position:absolute;font-size:11px;color:var(--glow)}
.lbl.a{left:14%;top:48%}.lbl.b{left:46%;top:24%}.lbl.c{left:74%;top:32%}.lbl.d{left:60%;top:64%}
.section{padding:72px 0}
.head{max-width:740px;margin-bottom:26px}
.head h2,h2{font-size:clamp(26px,4vw,40px)}
.grid6,.review-grid,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card,.review,.download-card,.article,.scene{
  padding:18px;background:var(--panel);border:1px solid var(--line);
}
.icon{color:var(--route);font-size:13px;font-weight:800}
.card h3{margin:10px 0 8px}
.split,.visual,.faq-layout{grid-template-columns:1fr 1fr;gap:36px}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0 22px}
.scene b{display:block;color:var(--glow);font-size:12px}
.shot img,.visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.visual{gap:0}
.visual img{aspect-ratio:16/11}
.visual-copy{padding:40px 32px;background:var(--panel);border:1px solid var(--line);border-left:0}
.metrics{display:flex;gap:24px;margin:18px 0 24px}
.metrics b{display:block;color:var(--glow);font-size:28px}
.person{display:flex;gap:10px;align-items:center;margin-top:12px}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:rgba(78,227,255,.12);color:var(--glow);font-weight:800;
}
.person small{display:block;color:var(--mute)}
.faq-layout{grid-template-columns:.8fr 1.2fr}
details{border-bottom:1px solid var(--line)}
summary{padding:15px 8px;font-weight:800;cursor:pointer;list-style:none}
.cta{padding:8px 0 70px}
.cta-in{grid-template-columns:1fr auto;padding:24px;background:var(--panel);border:1px solid var(--glow)}
.page-head{padding:68px 0 14px}
.help-layout{grid-template-columns:220px 1fr;align-items:start}
.side{padding:14px}
.side a{display:block;padding:8px 6px;color:var(--mute)}
.policy{margin-top:16px;padding:16px;border:1px solid var(--line)}
.shot{margin:18px 0}
footer{padding:44px 0 14px;background:#040b10;color:#e8f6ff}
.footer{grid-template-columns:1.4fr repeat(3,1fr);align-items:start}
.footer a,.footer p,.copy{color:#8fb4c8}
.footer a{display:block;margin:8px 0}
.copy{margin-top:22px;padding-top:12px;border-top:1px solid var(--line)}
@media(max-width:860px){
  .links,.net{display:none}
  .hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{grid-template-columns:1fr}
  .grid6,.review-grid,.cards,.scene-grid{grid-template-columns:1fr 1fr}
  .visual-copy{border-left:1px solid var(--line)}
}
@media(max-width:560px){.grid6,.review-grid,.cards,.scene-grid,.footer{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}