:root{
  --bg:#06070f;
  --panel:rgba(12,16,32,.62);
  --green:#4dffb3;
  --purple:#b084ff;
  --ink:#eef4ff;
  --mute:#9aa8c7;
  --line:rgba(176,132,255,.28);
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.7 "Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);
  overflow-x:hidden;
}
.aurora{
  position:fixed;inset:-20% -10% auto -10%;height:70vh;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse at 20% 40%,rgba(77,255,179,.28),transparent 55%),
    radial-gradient(ellipse at 55% 20%,rgba(176,132,255,.32),transparent 50%),
    radial-gradient(ellipse at 80% 50%,rgba(77,255,179,.16),transparent 46%);
  filter:blur(8px);
  animation:shift 16s ease-in-out infinite alternate;
}
@keyframes shift{
  from{transform:translateY(0) scale(1)}
  to{transform:translateY(18px) scale(1.06)}
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto;position:relative;z-index:1}
nav{
  position:sticky;top:0;z-index:20;height:72px;
  background:rgba(6,7,15,.72);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav,.hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{display:grid;gap:28px;align-items:center}
.nav{height:72px;grid-template-columns:auto 1fr auto}
.brand{display:flex;align-items:center;gap:8px;font-weight:900}
.brand b{
  width:30px;height:30px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--green),var(--purple));color:#081018;
}
.links{display:flex;justify-content:center;gap:26px;font-size:14px;color:#c9d4ef}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 18px;font-weight:800;color:#081018;
  background:linear-gradient(90deg,var(--green),#8dffd0);
  box-shadow:0 0 24px rgba(77,255,179,.28);
}
.button.ghost{background:transparent;color:var(--green);border:1px solid var(--green);box-shadow:none}
.hero{position:relative;padding:36px 0 72px;min-height:640px}
.nodes{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}
.hero-grid{grid-template-columns:1.05fr .95fr;min-height:560px}
.eyebrow{color:var(--green);font-size:12px;font-weight:800;letter-spacing:1.8px}
h1,h2{margin:10px 0 16px;line-height:1.12}
.hero h1{font-size:clamp(38px,6vw,70px)}
.hero h1 span{background:linear-gradient(90deg,var(--green),var(--purple));-webkit-background-clip:text;background-clip:text;color:transparent}
p,.lead{color:var(--mute)}
.actions,.micro{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.micro span{padding:6px 10px;border:1px solid var(--line);font-size:12px;color:#dce7ff}
.frame{position:relative}
.frame img,.shot img,.visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1px solid var(--line);border-radius:8px;
  box-shadow:0 0 40px rgba(176,132,255,.16);
}
.tag{
  position:absolute;padding:10px 12px;font-size:12px;
  background:rgba(8,12,24,.86);border:1px solid var(--green);
}
.a{left:-6px;bottom:16px}
.b{right:-6px;top:16px}
.section{padding:82px 0;position:relative;z-index:1}
.head{max-width:720px;margin-bottom:30px}
.head h2,h2{font-size:clamp(28px,4.4vw,46px)}
.grid6,.review-grid,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card,.review,.download-card,.article,.scene{
  background:var(--panel);backdrop-filter:blur(8px);
  border:1px solid var(--line);padding:22px;
}
.card{border-top:2px solid var(--green)}
.icon{color:var(--purple);font-size:22px}
.card h3{margin:12px 0 8px}
.split,.visual,.faq-layout{grid-template-columns:1fr 1fr;gap:44px}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 24px}
.scene b{display:block;color:var(--green);font-size:12px}
.visual{gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.visual-copy{padding:52px 40px;background:rgba(10,12,24,.7)}
.metrics{display:flex;gap:26px;margin:20px 0 26px}
.metrics b{display:block;color:var(--purple);font-size:28px}
.person{display:flex;gap:10px;align-items:center;margin-top:14px}
.avatar{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--green);color:var(--green);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:16px 6px;font-weight:800;cursor:pointer;list-style:none}
.cta{padding:54px 0;background:linear-gradient(90deg,rgba(77,255,179,.16),rgba(176,132,255,.2))}
.cta-in{grid-template-columns:1fr auto}
.page-head{padding:82px 0 28px}
.help-layout{grid-template-columns:220px 1fr;align-items:start}
.side{border:1px solid var(--line);padding:14px;background:var(--panel)}
.side a{display:block;padding:8px 6px;color:#c9d4ef}
.policy{margin-top:16px;padding:16px;border:1px solid var(--line)}
.shot{margin:20px 0}
footer{padding:46px 0 16px;border-top:1px solid var(--line);background:#04050c}
.footer{grid-template-columns:1.4fr repeat(3,1fr);align-items:start}
.footer a{display:block;margin:8px 0;color:#93a3c4}
.copy{margin-top:24px;padding-top:12px;border-top:1px solid var(--line);color:#7d8bab}
@media(max-width:860px){
  .links{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{padding:28px 0}
}
@media(max-width:560px){
  .grid6,.review-grid,.cards,.scene-grid,.footer{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .aurora{animation:none}
}