:root{
  --ink:#07111f;
  --ink-soft:#15243a;
  --paper:#edf8ff;
  --paper-blue:#d8effb;
  --cyan:#39d3f4;
  --cyan-deep:#087d9d;
  --violet:#8a80ff;
  --white:#ffffff;
  --line:rgba(136,205,232,.48);
  --glass:rgba(231,248,255,.58);
  --glass-strong:rgba(244,252,255,.78);
  --display:"Segoe UI Variable Display","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --body:"Segoe UI Variable Text","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --utility:Consolas,"Microsoft YaHei UI",monospace;
  --shadow:0 34px 90px rgba(13,56,82,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-width:320px;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 13%,rgba(57,211,244,.18),transparent 23rem),
    radial-gradient(circle at 91% 26%,rgba(138,128,255,.16),transparent 28rem),
    linear-gradient(180deg,#f7fcff 0%,#e8f5fc 47%,#f8fcff 100%);
  font-family:var(--body);
  line-height:1.65;
  overflow-x:clip;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  pointer-events:none;
  background-image:linear-gradient(rgba(12,94,121,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(12,94,121,.045) 1px,transparent 1px);
  background-size:42px 42px;
  mask-image:linear-gradient(to bottom,black,transparent 72%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.shell{width:min(1200px,calc(100% - 48px));margin-inline:auto}
.eyebrow{
  margin:0 0 16px;
  color:var(--cyan-deep);
  font:700 12px/1.2 var(--utility);
  letter-spacing:.16em;
  text-transform:uppercase;
}
h1,h2,h3,p{overflow-wrap:break-word}
h1,h2,h3{font-family:var(--display)}
h2{
  margin:0;
  font-size:clamp(36px,5vw,68px);
  line-height:1.03;
  letter-spacing:-.055em;
}
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  border-bottom:1px solid rgba(255,255,255,.86);
  background:rgba(235,248,254,.74);
  box-shadow:0 9px 30px rgba(24,77,101,.06);
  backdrop-filter:blur(24px) saturate(135%);
}
.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:21px;font-weight:800;letter-spacing:-.03em;white-space:nowrap}
.brand img{display:block;width:35px;height:35px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:28px;color:#25384d;font-size:14px;font-weight:650;white-space:nowrap}
.nav-links a{position:relative}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:100%;bottom:-8px;
  height:2px;
  background:var(--cyan-deep);
  transition:right .22s ease;
}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{right:0}
.button{
  display:inline-flex;
  min-width:154px;
  min-height:54px;
  padding:0 25px;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(255,255,255,.65);
  border-radius:14px;
  color:var(--white);
  background:linear-gradient(130deg,#087f9f,#2c9dc4 62%,#6572d9);
  box-shadow:0 14px 30px rgba(19,128,163,.24),inset 0 1px rgba(255,255,255,.45);
  font-weight:800;
  white-space:nowrap;
  word-break:keep-all;
  writing-mode:horizontal-tb;
  transition:transform .2s ease,box-shadow .2s ease;
}
.button:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(19,128,163,.3),inset 0 1px rgba(255,255,255,.45)}
.button:active{transform:translateY(0)}
.button-small{min-width:126px;min-height:45px;padding-inline:20px;border-radius:12px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:10px;color:#174866;font-weight:750}
.text-link span{transition:transform .2s ease}
.text-link:hover span{transform:translate(3px,3px)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--violet);outline-offset:4px}

.hero{position:relative;min-height:calc(100dvh - 76px);display:grid;align-items:center;padding:64px 0 88px}
.hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(420px,1.08fr);align-items:center;gap:clamp(40px,7vw,104px)}
.hero-copy{position:relative;z-index:3}
.hero-copy h1{
  max-width:10.5ch;
  margin:0;
  font-size:clamp(55px,7.4vw,104px);
  line-height:.92;
  letter-spacing:-.075em;
}
.hero-lead{max-width:580px;margin:30px 0 0;color:#344a60;font-size:clamp(17px,1.8vw,20px)}
.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:26px;margin-top:34px}
.platform-line{margin:29px 0 0;color:#567084;font:600 12px/1.5 var(--utility);letter-spacing:.04em}
.platform-line b{padding-inline:7px;color:var(--cyan-deep)}
.hero-rail{
  position:absolute;
  left:18px;
  top:50%;
  display:flex;
  align-items:center;
  gap:10px;
  color:#5f7c8e;
  font:600 10px/1 var(--utility);
  letter-spacing:.11em;
  writing-mode:vertical-rl;
  transform:translateY(-50%) rotate(180deg);
}
.hero-rail i{display:block;width:1px;height:42px;background:linear-gradient(var(--cyan),transparent)}
.acrylic-stage{
  position:relative;
  min-width:0;
  min-height:660px;
  display:grid;
  place-items:center;
  isolation:isolate;
}
.acrylic-stage::before{
  content:"";
  position:absolute;
  z-index:-4;
  width:78%;
  aspect-ratio:1;
  border-radius:50%;
  background:radial-gradient(circle,rgba(74,215,244,.29),rgba(138,128,255,.12) 48%,transparent 70%);
  filter:blur(10px);
}
.stage-orbit{position:absolute;z-index:-2;border:1px solid rgba(53,175,207,.35);border-radius:50%;box-shadow:inset 0 0 0 8px rgba(255,255,255,.18)}
.orbit-one{width:88%;aspect-ratio:1;transform:scaleY(.54)}
.orbit-two{width:64%;aspect-ratio:1;transform:scaleY(.74) rotate(28deg);border-color:rgba(138,128,255,.32)}
.stage-orbit::after{
  content:"";
  position:absolute;
  width:12px;height:12px;
  top:50%;right:-6px;
  border:4px solid rgba(255,255,255,.86);
  border-radius:50%;
  background:var(--cyan-deep);
  box-shadow:0 0 24px var(--cyan);
}
.stage-slab{
  position:absolute;
  border:1px solid rgba(255,255,255,.95);
  border-right-color:rgba(38,174,210,.42);
  border-bottom-color:rgba(38,174,210,.58);
  border-radius:26px;
  background:linear-gradient(135deg,rgba(255,255,255,.62),rgba(195,238,250,.2));
  box-shadow:inset 0 0 0 1px rgba(94,198,226,.2),0 28px 70px rgba(35,103,130,.15);
  backdrop-filter:blur(15px) saturate(140%);
}
.slab-back{width:72%;height:68%;left:2%;top:9%;z-index:-1;transform:translate(-18px,20px)}
.slab-back span{position:absolute;left:22px;bottom:20px;color:#3f7288;font:600 10px/1 var(--utility);letter-spacing:.15em}
.slab-mid{width:76%;height:65%;right:0;bottom:5%;z-index:0}
.slab-mid i{position:absolute;display:block;width:8px;height:8px;border-radius:50%;background:#8be9fa;box-shadow:0 0 0 5px rgba(255,255,255,.54),0 0 22px var(--cyan)}
.slab-mid i:nth-child(1){left:18px;top:18px}.slab-mid i:nth-child(2){right:18px;top:18px}.slab-mid i:nth-child(3){right:18px;bottom:18px}
.hero-media{
  position:relative;
  z-index:2;
  width:min(62%,410px);
  align-self:center;
  justify-self:center;
  height:auto;
  padding:0;
  margin:0;
  overflow:visible;
  transform:none;
}
.hero-media img{
  display:block;
  width:100%;
  height:auto;
  min-height:0;
  max-height:none;
  margin:0;
  padding:0;
  object-fit:contain;
  object-position:center;
  clip-path:none;
  transform:none;
  filter:drop-shadow(0 34px 34px rgba(11,52,73,.26));
}
.stage-label{
  position:absolute;
  z-index:4;
  min-width:152px;
  padding:15px 17px;
  border:1px solid rgba(255,255,255,.94);
  border-radius:12px;
  background:rgba(232,248,255,.68);
  box-shadow:0 18px 40px rgba(33,91,116,.13),inset 0 1px rgba(255,255,255,.9);
  backdrop-filter:blur(18px);
}
.stage-label::before{content:"";position:absolute;top:50%;width:45px;height:1px;background:linear-gradient(90deg,rgba(26,145,177,.2),var(--cyan-deep))}
.stage-label small{display:block;color:#507387;font:600 10px/1 var(--utility);letter-spacing:.12em}
.stage-label strong{display:block;margin-top:6px;font-size:15px}
.label-top{right:-2%;top:16%}.label-top::before{right:100%}
.label-bottom{left:-1%;bottom:12%}.label-bottom::before{left:100%;transform:rotate(180deg)}

.route-system{padding:120px 0 150px}
.section-intro{display:grid;grid-template-columns:.58fr 1.25fr .7fr;gap:38px;align-items:end}
.section-intro .eyebrow{align-self:start;margin-top:10px}
.section-intro>p:last-child{margin:0;color:#52697b}
.route-track{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:74px;
}
.route-track::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:linear-gradient(90deg,var(--cyan-deep),var(--cyan),var(--violet))}
.route-track article{position:relative;min-height:250px;padding:46px 27px 24px 0;border-right:1px solid var(--line)}
.route-track article:not(:first-child){padding-left:27px}
.route-track article:last-child{border-right:0}
.track-node{position:absolute;top:-8px;left:0;width:18px;height:18px;border:4px solid var(--paper);border-radius:50%;background:var(--cyan-deep);box-shadow:0 0 0 1px rgba(11,126,157,.3),0 0 24px rgba(57,211,244,.6)}
.route-track article:not(:first-child) .track-node{left:27px}
.route-track article>p{margin:0 0 25px;color:var(--cyan-deep);font:700 11px/1 var(--utility);letter-spacing:.15em}
.route-track h3{margin:0 0 12px;font-size:23px;letter-spacing:-.03em}
.route-track article>span:last-child{display:block;color:#52697b;font-size:15px}

.product-bay{position:relative;padding:90px 0 140px}
.product-bay::before{
  content:"";
  position:absolute;
  inset:0 7%;
  z-index:-1;
  border:1px solid rgba(255,255,255,.9);
  border-radius:46px;
  background:linear-gradient(130deg,rgba(255,255,255,.5),rgba(191,234,248,.24));
  box-shadow:inset 0 0 0 1px rgba(83,185,213,.13),var(--shadow);
  backdrop-filter:blur(18px);
}
.bay-grid{display:grid;grid-template-columns:.64fr 1.36fr;align-items:center;gap:clamp(40px,6vw,84px)}
.bay-copy p:not(.eyebrow){margin:25px 0 30px;color:#40596d;font-size:17px}
.display-plinth{position:relative;min-width:0;padding-bottom:44px}
.display-plinth::before{
  content:"";
  position:absolute;
  left:5%;right:2%;bottom:20px;height:44px;
  border:1px solid rgba(255,255,255,.95);
  border-radius:0 0 24px 24px;
  background:linear-gradient(180deg,rgba(169,225,242,.44),rgba(113,192,218,.22));
  box-shadow:0 24px 34px rgba(21,79,105,.17),inset 0 2px rgba(255,255,255,.8);
  transform:perspective(300px) rotateX(-22deg);
}
.plinth-edge{position:absolute;left:3%;right:0;bottom:60px;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),var(--violet),transparent);box-shadow:0 0 18px var(--cyan)}
.product-media{
  position:relative;
  z-index:2;
  align-self:center;
  height:auto;
  padding:0;
  margin:0;
  overflow:visible;
  transform:none;
}
.product-media img{
  display:block;
  width:100%;
  height:auto;
  min-height:0;
  max-height:none;
  margin:0;
  padding:0;
  object-fit:contain;
  object-position:center;
  clip-path:none;
  transform:none;
  filter:drop-shadow(0 28px 26px rgba(20,68,91,.16));
}
.plinth-caption{position:absolute;z-index:3;left:8%;right:5%;bottom:3px;display:flex;justify-content:space-between;color:#496c7d;font:600 10px/1 var(--utility);letter-spacing:.12em}

.layer-stack{padding:150px 0}
.stack-heading{display:grid;grid-template-columns:.55fr 1fr;gap:50px;align-items:start}
.floating-layers{position:relative;min-height:610px;margin-top:70px}
.floating-layers::before{
  content:"";
  position:absolute;
  left:7%;right:7%;top:50%;height:2px;
  background:linear-gradient(90deg,transparent,var(--cyan-deep),var(--violet),transparent);
  box-shadow:0 0 28px rgba(57,211,244,.6);
}
.layer{
  position:absolute;
  width:min(43%,500px);
  min-height:235px;
  padding:34px;
  border:1px solid rgba(255,255,255,.92);
  border-right-color:rgba(99,184,210,.5);
  border-bottom-color:rgba(99,184,210,.62);
  border-radius:24px;
  background:linear-gradient(135deg,rgba(255,255,255,.67),rgba(190,232,247,.3));
  box-shadow:inset 0 0 0 1px rgba(104,194,219,.14),0 30px 70px rgba(25,86,111,.15);
  backdrop-filter:blur(20px) saturate(135%);
}
.layer::after{content:"";position:absolute;width:11px;height:11px;border:3px solid rgba(255,255,255,.8);border-radius:50%;background:var(--cyan-deep);box-shadow:0 0 20px var(--cyan)}
.layer>span{color:var(--cyan-deep);font:700 11px/1 var(--utility);letter-spacing:.14em}
.layer h3{margin:33px 0 10px;font-size:clamp(24px,3vw,36px);line-height:1.08;letter-spacing:-.04em}
.layer p{margin:0;color:#486174}
.layer-route{left:0;top:0}.layer-route::after{right:24px;bottom:22px}
.layer-privacy{right:2%;top:145px}.layer-privacy::after{left:24px;top:22px;background:var(--violet)}
.layer-device{left:22%;bottom:0}.layer-device::after{right:24px;top:22px}

.decision-panel{padding:40px 0 130px}
.decision-shell{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:.72fr 1.1fr;
  gap:70px;
  padding:clamp(42px,7vw,88px);
  border-radius:38px;
  color:#f1fbff;
  background:
    radial-gradient(circle at 90% 20%,rgba(57,211,244,.2),transparent 32%),
    linear-gradient(135deg,#071421,#102b3d 58%,#172744);
  box-shadow:0 40px 90px rgba(4,28,43,.24);
}
.decision-shell::before{content:"";position:absolute;right:-100px;bottom:-220px;width:460px;height:460px;border:1px solid rgba(82,219,247,.23);border-radius:50%;box-shadow:0 0 0 45px rgba(82,219,247,.03),0 0 0 90px rgba(82,219,247,.02)}
.decision-shell .eyebrow{color:#7de8ff}
.decision-shell h2{font-size:clamp(38px,4.4vw,62px)}
.decision-path{position:relative;z-index:1;list-style:none;margin:0;padding:0;border-top:1px solid rgba(156,220,239,.25)}
.decision-path li{display:grid;grid-template-columns:.62fr 1fr;gap:20px;padding:21px 0;border-bottom:1px solid rgba(156,220,239,.25)}
.decision-path b{color:#f7fdff}.decision-path span{color:#a9c4d0}
.light-link{grid-column:2;color:#82eaff}

.guide-deck{padding:110px 0 150px}
.guide-heading{display:grid;grid-template-columns:.55fr 1fr;gap:50px;align-items:start}
.guide-strips{margin-top:64px;border-top:1px solid #9ec9d9}
.guide-strips article{display:grid;grid-template-columns:.45fr 1.2fr 1fr auto;gap:34px;align-items:center;padding:30px 0;border-bottom:1px solid #9ec9d9}
.guide-strips article>span{color:var(--cyan-deep);font:700 11px/1 var(--utility);letter-spacing:.12em}
.guide-strips h3{margin:0;font-size:23px;line-height:1.2;letter-spacing:-.025em}
.guide-strips p{margin:0;color:#51697a;font-size:15px}
.guide-strips a{color:#0a718e;font-weight:800;white-space:nowrap}

.faq-preview{padding:100px 0 150px}
.faq-grid{display:grid;grid-template-columns:.68fr 1.32fr;gap:clamp(50px,8vw,120px)}
.faq-grid header{position:sticky;top:116px;align-self:start}
.faq-grid .text-link{margin-top:28px}
details{border-top:1px solid #94c7d8}
details:last-child{border-bottom:1px solid #94c7d8}
summary{position:relative;cursor:pointer;list-style:none;padding:28px 45px 28px 0;font-size:19px;font-weight:750}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:5px;top:20px;color:var(--cyan-deep);font:300 30px/1 var(--display);transition:transform .2s ease}
details[open] summary::after{transform:rotate(45deg)}
details p{max-width:700px;margin:0 0 28px;color:#4c6577}

.final-rail{padding:34px 0 115px}
.final-inner{
  display:grid;
  grid-template-columns:130px 1fr auto;
  gap:38px;
  align-items:center;
  padding:50px 54px;
  border:1px solid rgba(255,255,255,.9);
  border-radius:26px;
  background:linear-gradient(120deg,rgba(255,255,255,.68),rgba(190,235,248,.35));
  box-shadow:inset 0 0 0 1px rgba(97,190,216,.14),var(--shadow);
  backdrop-filter:blur(22px);
}
.final-inner h2{font-size:clamp(32px,4vw,52px)}
.final-signal{display:flex;align-items:center}
.final-signal i{display:block;width:18px;height:18px;border:3px solid white;border-radius:50%;background:var(--cyan-deep);box-shadow:0 0 18px var(--cyan)}
.final-signal i+ i{margin-left:22px;position:relative}
.final-signal i+ i::before{content:"";position:absolute;right:100%;top:50%;width:25px;height:2px;background:linear-gradient(90deg,var(--cyan-deep),var(--violet))}
.final-signal i:nth-child(3){background:var(--violet)}

.site-footer{padding:70px 0 26px;border-top:1px solid rgba(116,182,205,.5);background:rgba(229,244,251,.65)}
.footer-grid{display:grid;grid-template-columns:1.5fr .65fr .65fr;gap:50px}
.footer-brand p{color:#567082}
.footer-grid h2{margin:0 0 15px;font-size:13px;letter-spacing:.08em}
.footer-grid>div:not(:first-child) a{display:block;margin:9px 0;color:#4d6678}
.copyright{margin-top:45px;padding-top:21px;border-top:1px solid rgba(116,182,205,.45);color:#6b8291;font-size:12px}

@media(max-width:1040px){
  .hero-grid{grid-template-columns:.86fr 1.14fr;gap:30px}
  .acrylic-stage{min-height:580px}
  .hero-copy h1{font-size:clamp(52px,7.8vw,82px)}
  .section-intro{grid-template-columns:.45fr 1fr}
  .section-intro>p:last-child{grid-column:2}
  .route-track{grid-template-columns:1fr 1fr}
  .route-track::before{display:none}
  .route-track article{border-top:3px solid var(--cyan-deep)}
  .route-track article:nth-child(n+3){margin-top:36px}
  .guide-strips article{grid-template-columns:.4fr 1fr auto}
  .guide-strips p{grid-column:2}
  .guide-strips a{grid-column:3;grid-row:1/3}
}
@media(max-width:820px){
  .shell{width:min(100% - 32px,1200px)}
  .nav{padding:12px 0;flex-wrap:wrap}
  .nav-links{order:3;width:100%;overflow-x:auto;padding-bottom:5px;gap:24px}
  .hero{padding-top:48px}
  .hero-rail{display:none}
  .hero-grid,.bay-grid,.faq-grid,.decision-shell{grid-template-columns:1fr}
  .hero-copy{text-align:center}
  .hero-copy h1,.hero-lead{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .acrylic-stage{min-height:610px}
  .stage-label{min-width:138px}
  .section-intro,.stack-heading,.guide-heading{grid-template-columns:1fr}
  .section-intro>p:last-child{grid-column:auto}
  .product-bay::before{inset:0 16px}
  .bay-copy{text-align:center}
  .display-plinth{margin-top:20px}
  .floating-layers{min-height:auto;display:grid;gap:20px}
  .floating-layers::before{left:50%;top:0;bottom:0;width:2px;height:auto}
  .layer{position:relative;width:82%;min-height:0;inset:auto}
  .layer:nth-child(even){justify-self:end}
  .light-link{grid-column:auto}
  .faq-grid header{position:static}
  .final-inner{grid-template-columns:100px 1fr}
  .final-inner .button{grid-column:2;justify-self:start}
}
@media(max-width:600px){
  .shell{width:min(100% - 24px,1200px)}
  .nav>.button{display:none}
  .brand{font-size:19px}.brand img{width:32px;height:32px}
  .hero{min-height:auto;padding:52px 0 76px}
  .hero-copy h1{font-size:clamp(48px,16vw,66px);line-height:.96}
  .hero-lead{font-size:16px}
  .hero-actions{display:grid;gap:18px}
  .hero-actions .button{width:100%}
  .platform-line{line-height:2}
  .acrylic-stage{min-height:480px;margin-top:18px}
  .slab-back{width:82%;left:0}.slab-mid{width:85%}
  .hero-media{width:min(62%,290px)}
  .stage-label{min-width:118px;padding:12px}
  .label-top{right:0}.label-bottom{left:0}
  .route-system,.layer-stack,.guide-deck,.faq-preview{padding:88px 0}
  h2{font-size:clamp(36px,11.5vw,50px)}
  .route-track{grid-template-columns:1fr}
  .route-track article,.route-track article:not(:first-child){min-height:0;padding:40px 12px 34px 22px;border-right:0}
  .route-track article:nth-child(n+2){margin-top:22px}
  .route-track article:not(:first-child) .track-node,.track-node{left:22px}
  .product-bay{padding:72px 0 95px}
  .product-bay::before{border-radius:28px}
  .bay-grid{gap:28px}
  .layer{width:94%;padding:27px}
  .decision-panel{padding:30px 0 85px}
  .decision-shell{gap:40px;padding:36px 24px;border-radius:28px}
  .decision-path li{grid-template-columns:1fr;gap:5px}
  .guide-strips article{grid-template-columns:1fr;gap:10px;padding:25px 0}
  .guide-strips p,.guide-strips a{grid-column:auto;grid-row:auto}
  .final-rail{padding-bottom:80px}
  .final-inner{grid-template-columns:1fr;padding:34px 24px}
  .final-signal{display:none}
  .final-inner .button{grid-column:auto;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/3}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
}

/* Hero image safety — final override */
.hero-grid{align-items:center}
.hero-media{align-self:center;height:auto;padding:0;margin:0;overflow:visible;transform:none}
.hero-media img{display:block;width:100%;height:auto;min-height:0;max-height:none;margin:0;padding:0;object-fit:contain;object-position:center;clip-path:none;transform:none}