:root{
  --bg-deep:#0a0b18;
  --bg-panel:#101228;
  --bg-panel-2:#141734;
  --line:rgba(94,234,255,.18);
  --cyan:#5eeaff;
  --violet:#a577ff;
  --yellow:#f8ef6a;
  --text:#eef1ff;
  --text-dim:#a7adcf;
  --radius:18px;
  --pad:24px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  background:var(--bg-deep);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:#080a14;}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--cyan),var(--violet));border-radius:8px;}
::selection{background:rgba(94,234,255,.28);}

/* progress */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--cyan),var(--violet),var(--yellow));z-index:999;box-shadow:0 0 10px var(--cyan);}

/* nav */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  transition:background .3s,backdrop-filter .3s,border-color .3s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,11,24,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1180px;margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.5px;font-size:18px;}
.brand img{height:34px;width:auto;border-radius:8px;}
.nav-links{display:flex;gap:20px;font-size:14px;color:var(--text-dim);}
.nav-links a{transition:color .25s;}
.nav-links a:hover,.nav-links a.active{color:var(--cyan);}
.nav-dl{
  font-size:14px;font-weight:700;padding:8px 18px;border-radius:999px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  color:#07081a;white-space:nowrap;position:relative;overflow:hidden;
}
.nav-dl::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);
  transform:translateX(-120%);
}
.nav-dl:hover::after{animation:sheen .9s ease;}
@keyframes sheen{to{transform:translateX(120%);}}

/* generic section */
.section-wrap{padding:88px 20px;position:relative;}
.section-wrap.alt-a{background:var(--bg-panel);}
.section-wrap.alt-b{background:
  radial-gradient(circle at 1px 1px, rgba(94,234,255,.13) 1px, transparent 0) 0 0/22px 22px,
  var(--bg-deep);}
.section-wrap.alt-c{background:
  linear-gradient(rgba(165,119,255,.07) 1px,transparent 1px) 0 0/100% 44px,
  linear-gradient(90deg,rgba(94,234,255,.06) 1px,transparent 1px) 0 0/44px 100%,
  #0c0e20;}
.section-wrap + .section-wrap{border-top:1px solid var(--line);}
.inner{max-width:1120px;margin:0 auto;}
.sec-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;flex-wrap:wrap;}
.sec-num{
  font-size:13px;font-weight:800;letter-spacing:2px;
  color:#07081a;background:linear-gradient(90deg,var(--cyan),var(--yellow));
  padding:2px 10px;border-radius:6px;
}
.sec-sub{font-size:13px;color:var(--text-dim);letter-spacing:1px;}
h2{
  font-size:clamp(22px,3.4vw,32px);font-weight:900;line-height:1.3;margin-bottom:14px;
  background:linear-gradient(92deg,#fff 10%,var(--cyan) 55%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
h3{font-size:17px;font-weight:800;margin-bottom:6px;}
p.lead{color:var(--text-dim);max-width:720px;font-size:15px;}
.card{
  background:var(--bg-panel-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:var(--pad);
}

/* reveal */
.reveal{opacity:1;transform:none;transition:transform .7s cubic-bezier(.2,.7,.3,1),opacity .7s;}
.reveal.pre{opacity:0;transform:translateY(26px);}
.reveal.pre.on{opacity:1;transform:none;}

/* hero */
.hero{
  padding:120px 20px 80px;
  position:relative;
  background:
    radial-gradient(900px 420px at 78% 8%,rgba(165,119,255,.30),transparent 62%),
    radial-gradient(760px 380px at 12% 26%,rgba(94,234,255,.20),transparent 60%),
    var(--bg-deep);
}
.hero-box{
  max-width:1120px;margin:0 auto;border:1px solid rgba(94,234,255,.32);
  border-radius:26px;padding:48px 40px;position:relative;overflow:hidden;
  background:rgba(12,14,32,.72);
}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(115deg,transparent 0 26px,rgba(94,234,255,.05) 26px 27px),
    radial-gradient(circle at 30% 40%,rgba(94,234,255,.10),transparent 60%);
  animation:drift 18s linear infinite;
}
@keyframes drift{to{background-position:120px 0,0 0;}}
.hero-layout{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;}
.hero h1{
  font-size:clamp(28px,4.6vw,46px);font-weight:900;line-height:1.22;margin-bottom:18px;
  background:linear-gradient(96deg,#fff,var(--cyan) 48%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:16px;margin-bottom:26px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;
  font-weight:800;font-size:15px;transition:transform .25s,box-shadow .25s;
}
.btn-primary{background:linear-gradient(90deg,var(--cyan),var(--violet));color:#07081a;box-shadow:0 8px 26px rgba(94,234,255,.24);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(94,234,255,.36);}
.btn-ghost{border:1px solid rgba(94,234,255,.45);color:var(--cyan);}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(94,234,255,.08);}
.hero-note{margin-top:18px;font-size:13px;color:var(--text-dim);}
.hero-frames{position:relative;min-height:340px;}
.frame{
  position:absolute;border-radius:14px;overflow:hidden;
  border:1px solid rgba(94,234,255,.4);
  box-shadow:0 18px 44px rgba(0,0,0,.5);
  animation:float 6s ease-in-out infinite;
}
.frame img{width:100%;height:100%;object-fit:cover;}
.frame.f1{width:52%;top:0;right:6%;aspect-ratio:3/4;transform:rotate(4deg);}
.frame.f2{width:46%;bottom:0;left:0;aspect-ratio:3/4;animation-delay:-2.4s;transform:rotate(-5deg);}
.frame.f3{width:36%;top:32%;left:34%;aspect-ratio:3/4;animation-delay:-4s;transform:rotate(9deg);}
.tag-ai{
  position:absolute;left:8px;top:8px;font-size:10px;font-weight:800;letter-spacing:1px;
  padding:2px 8px;border-radius:999px;background:rgba(94,234,255,.9);color:#07081a;
}
@keyframes float{0%,100%{translate:0 0;}50%{translate:0 -12px;}}
.hero-ticker{margin-top:34px;display:flex;gap:12px;flex-wrap:wrap;position:relative;}
.chip{
  font-size:13px;color:var(--text-dim);border:1px solid var(--line);
  background:rgba(94,234,255,.05);border-radius:999px;padding:6px 14px;
}
.chip b{color:var(--cyan);font-weight:800;}

/* pipeline */
.pipeline{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:26px;}
.step{background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center;}
.step .ico{
  width:42px;height:42px;margin:0 auto 12px;border-radius:12px;display:grid;place-items:center;
  font-weight:900;color:#07081a;background:linear-gradient(135deg,var(--cyan),var(--violet));
  animation:pulse 2.6s ease-in-out infinite;
}
.step:nth-child(2) .ico{animation-delay:.3s}.step:nth-child(3) .ico{animation-delay:.6s}
.step:nth-child(4) .ico{animation-delay:.9s}.step:nth-child(5) .ico{animation-delay:1.2s}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(94,234,255,.45);}50%{box-shadow:0 0 0 12px rgba(94,234,255,0);}}
.step p{font-size:13px;color:var(--text-dim);}
.step.mid{display:none;}

/* character grid */
.char-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px;}
.char-card{
  background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .3s,border-color .3s;
}
.char-card:hover{transform:translateY(-6px) rotate(-.8deg);border-color:rgba(94,234,255,.6);}
.char-card img{aspect-ratio:3/4;object-fit:cover;width:100%;}
.char-body{padding:14px 16px 18px;}
.char-role{font-size:12px;color:var(--cyan);letter-spacing:1px;margin-bottom:6px;}
.char-line{font-size:13px;color:var(--text-dim);border-left:2px solid var(--violet);padding-left:8px;margin-top:8px;}

/* models marquee */
.marquee-outer{overflow:hidden;margin-top:26px;position:relative;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);}
.marquee-track{display:flex;gap:18px;width:max-content;animation:slide 34s linear infinite;}
.marquee-outer:hover .marquee-track{animation-play-state:paused;}
.model-card{width:230px;flex:0 0 auto;background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .3s;}
.model-card:hover{transform:translateY(-6px);border-color:rgba(248,239,106,.6);}
.model-card img{aspect-ratio:4/5;object-fit:cover;width:100%;}
.model-body{padding:12px 14px 16px;font-size:13px;color:var(--text-dim);}
.model-body strong{display:block;color:var(--text);font-size:15px;margin-bottom:4px;}
@keyframes slide{to{transform:translateX(-50%);}}

/* workshop */
.work-row{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center;margin-top:30px;}
.work-row:nth-child(even) .work-img{order:2;}
.work-img{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);}
.work-img img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .5s;}
.work-img:hover img{transform:scale(1.05);}
.work-copy p{color:var(--text-dim);font-size:15px;}

/* screening */
.screen-box{border:1px solid rgba(94,234,255,.35);border-radius:var(--radius);padding:18px;margin-top:26px;background:rgba(12,14,32,.6);}
.screen-view{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:#07081a;}
.screen-view img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:0;transition:opacity .6s;}
.screen-view img.on{opacity:1;}
.screen-caption{margin-top:14px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;}
.screen-caption p{font-size:14px;color:var(--text-dim);}
.dots{display:flex;gap:8px;}
.dot{width:26px;height:6px;border-radius:99px;border:none;background:rgba(167,173,207,.32);cursor:pointer;transition:background .3s;}
.dot.on{background:linear-gradient(90deg,var(--cyan),var(--violet));}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px;}
.stat{background:rgba(94,234,255,.06);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center;}
.stat b{display:block;font-size:26px;font-weight:900;background:linear-gradient(90deg,var(--cyan),var(--yellow));-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{font-size:13px;color:var(--text-dim);}

/* wall */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px;}
.wall-item{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);position:relative;background:var(--bg-panel-2);}
.wall-item img{aspect-ratio:3/4;object-fit:cover;width:100%;transition:transform .5s;}
.wall-item:hover img{transform:scale(1.06);}
.wall-cap{padding:10px 14px;font-size:13px;color:var(--text-dim);}

/* faq */
.faq{margin-top:26px;display:grid;gap:14px;}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--bg-panel-2);overflow:hidden;}
.faq-q{width:100%;text-align:left;background:none;border:none;color:var(--text);font-family:inherit;font-size:15px;font-weight:700;padding:18px 20px;display:flex;justify-content:space-between;gap:14px;cursor:pointer;}
.faq-q span{color:var(--cyan);transition:transform .3s;}
.faq-item.open .faq-q span{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 20px 18px;color:var(--text-dim);font-size:14px;}
.faq-item.open .faq-a{max-height:220px;}

/* cta */
.cta-band{
  border-radius:24px;padding:46px 36px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(94,234,255,.18),rgba(165,119,255,.22),rgba(248,239,106,.12));
  border:1px solid rgba(94,234,255,.4);
}
.cta-band h2{margin-bottom:12px;}
.cta-band p{color:var(--text-dim);margin-bottom:24px;}

/* footer */
.site-footer{background:#07081a;border-top:1px solid var(--line);padding:48px 20px 28px;}
.foot-inner{max-width:1120px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:800;margin-bottom:12px;}
.foot-brand img{height:28px;border-radius:6px;}
.site-footer p,.site-footer a{font-size:12.5px;color:#7b81a3;}
.site-footer h4{font-size:13px;color:#b9bfe0;margin-bottom:10px;font-weight:700;}
.foot-links{display:grid;gap:6px;}
.foot-links a:hover{color:var(--cyan);}
.foot-bottom{
  max-width:1120px;margin:30px auto 0;padding-top:18px;border-top:1px solid rgba(94,234,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
}
.foot-bottom a{color:#7b81a3;}
.foot-bottom a:hover{color:var(--cyan);}

/* fab */
.fab{
  position:fixed;right:20px;bottom:22px;z-index:950;width:52px;height:52px;border-radius:50%;
  border:none;cursor:pointer;font-size:20px;background:linear-gradient(135deg,var(--cyan),var(--violet));
  color:#07081a;box-shadow:0 10px 28px rgba(94,234,255,.35);
}
.fab-pop{
  position:fixed;right:20px;bottom:86px;z-index:950;width:min(320px,calc(100vw - 40px));
  border-radius:18px;padding:20px;display:none;
  background:rgba(18,20,44,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(94,234,255,.4);
}
.fab-pop.show{display:block;animation:pop .28s ease;}
@keyframes pop{from{opacity:0;transform:scale(.94);}to{opacity:1;transform:scale(1);}}
.fab-pop h4{font-size:15px;margin-bottom:8px;}
.fab-pop p{font-size:13px;color:var(--text-dim);margin-bottom:12px;}
.fab-pop input,.fab-pop textarea{
  width:100%;margin-bottom:10px;padding:9px 11px;border-radius:10px;font-family:inherit;font-size:13px;
  background:rgba(10,11,24,.8);border:1px solid var(--line);color:var(--text);
}
.fab-pop button[type=submit]{
  width:100%;padding:10px;border-radius:10px;border:none;cursor:pointer;font-weight:800;font-family:inherit;
  background:linear-gradient(90deg,var(--cyan),var(--violet));color:#07081a;
}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .reveal.pre{opacity:1;transform:none;}
}

@media (max-width:1024px){
  .hero-layout{grid-template-columns:1fr;gap:32px;}
  .hero-frames{min-height:280px;}
  .pipeline{grid-template-columns:repeat(3,1fr);}
  .pipeline .step:nth-child(4),.pipeline .step:nth-child(5){grid-column:span 1;}
  .char-grid{grid-template-columns:repeat(2,1fr);}
  .stats{grid-template-columns:repeat(2,1fr);}
  .wall{grid-template-columns:repeat(2,1fr);}
  .foot-inner{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;}
}

@media (max-width:768px){
  .section-wrap{padding:64px 16px;}
  .hero{padding:96px 14px 56px;}
  .hero-box{padding:28px 20px;}
  .pipeline{grid-template-columns:1fr;}
  .work-row{grid-template-columns:1fr;}
  .work-row:nth-child(even) .work-img{order:0;}
  .char-grid,.stats,.wall,.foot-inner{grid-template-columns:1fr;}
  .frame.f3{display:none;}
  .screen-view{aspect-ratio:4/3;}
  .brand img{height:28px;}
  .brand{font-size:16px;}
  .nav-dl{padding:7px 14px;font-size:13px;}
}