*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{
  --bg:#060d19;
  --bg-2:#0b1830;
  --panel:#0d1a32;
  --panel-2:#10203d;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(132,198,255,.20);
  --text:#eef8ff;
  --muted:#aac3da;
  --muted-2:#89a6c2;
  --primary:#4ccaff;
  --primary-2:#b7f2ff;
  --glow:rgba(76,202,255,.30);
  --white:rgba(255,255,255,.05);
  --shadow:0 28px 80px rgba(0,0,0,.34);
  --container:1280px;
  --radius:30px;
}
html,body{margin:0;padding:0}
body{
  font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  background:
    radial-gradient(circle at 10% 0%, rgba(76,202,255,.18), transparent 22%),
    radial-gradient(circle at 95% 8%, rgba(98,145,255,.15), transparent 24%),
    linear-gradient(180deg,#050b16 0%,#07111f 30%,#08172b 65%,#06101d 100%);
  color:var(--text);
  line-height:1.75;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
.container{width:min(var(--container), calc(100% - 34px));margin:0 auto}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-weight:900;
  color:var(--primary-2);
}
.section-title{max-width:820px;margin:0 0 28px}
.section-title.center{text-align:center;margin-inline:auto}
.section-title h2,
.hero-copy h1,
.overview-copy h2,
.scenario-copy h2,
.download-copy h2,
.security-copy h2,
.support-copy h2,
.portal-strip h2,
.entry-copy h1{
  margin:12px 0 14px;
  font-size:clamp(40px,6vw,82px);
  line-height:.92;
  letter-spacing:-.055em;
}
.section-title p,.lead,.overview-copy p,.overview-list span,.strength-card p,.product-content p,.scenario-copy p,.scenario-list span,.download-copy p,.download-list span,.security-copy p,.security-list span,.knowledge-card p,.support-copy p,.support-panel span,.portal-strip p,.faq-list p,.footer-brand p,.entry-panel p,.entry-link-card p{
  margin:0;
  color:var(--muted);
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(7,17,31,.72);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav-shell{
  display:flex;
  align-items:center;
  gap:18px;
  padding:16px 0;
  position:relative;
}
.brand{display:flex;align-items:center;gap:14px;min-width:max-content}
.brand-mark{
  width:46px;height:46px;border-radius:15px;
  background:linear-gradient(135deg,#14233c,#4ecbff);
  display:grid;place-items:center;
  color:#fff;font-weight:900;font-size:22px;
  box-shadow:0 12px 34px rgba(76,202,255,.28);
}
.brand-text{display:flex;flex-direction:column;gap:2px}
.brand-text strong{font-size:18px;line-height:1}
.brand-text em{font-style:normal;color:var(--muted-2);font-size:12px;letter-spacing:.1em}
.main-nav{display:flex;gap:18px;margin-left:auto}
.main-nav a{font-size:14px;font-weight:800;color:#d2e8f7}
.main-nav a:hover{color:#fff}
.nav-actions{display:flex;gap:10px}
.menu-toggle{display:none;margin-left:auto;border:0;background:transparent;padding:0}
.menu-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;padding:13px 20px;border-radius:999px;
  border:1px solid transparent;font-weight:900;cursor:pointer;
  transition:.22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#7fe7ff);
  color:#05111f;
  box-shadow:0 16px 40px rgba(76,202,255,.20);
}
.btn-soft{
  background:rgba(255,255,255,.08);
  border-color:var(--line-2);
  color:#fff;
}
.btn-line{
  background:transparent;
  border-color:rgba(255,255,255,.20);
  color:#fff;
}

/* Hero */
.hero{padding:56px 0 40px}
.hero-grid{
  display:grid;
  grid-template-columns:.92fr 1.08fr;
  gap:30px;
  align-items:center;
}
.hero-actions,.download-actions,.support-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin:30px 0 0;
}
.hero-mini-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:28px;
}
.hero-mini-grid article{
  padding:18px;
  border-radius:24px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.hero-mini-grid small{display:block;color:var(--primary-2);font-weight:900}
.hero-mini-grid strong{display:block;margin-top:8px;font-size:18px}
.hero-mini-grid span{display:block;margin-top:6px;color:var(--muted);font-size:14px}

.hero-visual{
  position:relative;
  min-height:670px;
  border-radius:40px;
  background:
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02)),
    radial-gradient(circle at 50% 50%, rgba(76,202,255,.14), transparent 48%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.hero-orbit{
  position:absolute;border-radius:50%;
  border:1px solid rgba(147,223,255,.10);
}
.orbit-a{inset:70px}
.orbit-b{inset:140px}
.orbit-c{inset:210px}
.hero-device{
  position:absolute;
  display:flex;align-items:center;justify-content:center;
  border-radius:28px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
  box-shadow:0 20px 60px rgba(0,0,0,.32);
}
.hero-device img{object-fit:contain;filter:drop-shadow(0 26px 36px rgba(0,0,0,.42))}
.hero-main{
  left:50%;top:50%;transform:translate(-50%,-50%);
  width:360px;height:470px;z-index:3;
}
.hero-main img{max-height:420px}
.hero-side{width:190px;height:200px;z-index:4}
.side-left{left:42px;bottom:56px}
.side-top{right:48px;top:54px}
.side-right{right:60px;bottom:62px}
.hero-side img{max-height:155px}
.hero-float{
  position:absolute;
  padding:12px 16px;
  border-radius:22px;
  background:rgba(11,24,48,.78);
  border:1px solid var(--line-2);
  box-shadow:0 16px 32px rgba(0,0,0,.25);
  z-index:5;
}
.hero-float span{display:block;color:var(--muted-2);font-size:12px}
.hero-float strong{display:block;margin-top:5px;font-size:16px}
.float-a{left:32px;top:34px}
.float-b{right:34px;bottom:34px}

/* Shared cards */
.gateway-section,.overview-section,.strength-section,.products-section,.scenario-section,.compare-section,.download-section,.security-section,.knowledge-section,.support-section,.portal-section,.faq-section,.entry-link-section{padding:40px 0}
.gateway-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr;
  grid-auto-rows:minmax(230px,auto);
  gap:16px;
}
.gateway-card{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  text-align:left;
  padding:26px;
  border-radius:30px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.gateway-primary{
  grid-row:span 2;
  background:
    linear-gradient(160deg,rgba(78,203,255,.18),rgba(255,255,255,.03)),
    rgba(255,255,255,.04);
}
.gateway-card small,.support-panel small{
  display:block;
  font-size:12px;
  letter-spacing:.15em;
  text-transform:uppercase;
  color:var(--primary-2);
  font-weight:900;
}
.gateway-card h3,.strength-card h3,.product-content h3,.knowledge-card h3,.entry-link-card h3,.entry-panel h2{
  margin:14px 0 10px;
  font-size:34px;
  line-height:1.02;
  letter-spacing:-.04em;
}
.gateway-card p{margin:0;color:var(--muted)}
.gateway-card b{margin-top:14px;color:#dff6ff;word-break:break-all}

.overview-grid,.scenario-grid,.download-grid,.security-grid,.support-grid,.entry-hero-grid{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:18px;
}
.overview-copy,.scenario-copy,.download-copy,.security-copy,.support-copy{
  padding:32px;
  border-radius:32px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.overview-list,.scenario-list,.download-list,.security-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.overview-list article,.scenario-list article,.download-list article,.security-list article{
  padding:22px;
  border-radius:26px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.overview-list strong,.security-list strong{display:block;margin-bottom:8px;font-size:18px}
.scenario-list b,.download-list b{
  display:block;
  font-size:44px;
  line-height:1;
  color:var(--primary);
  letter-spacing:-.06em;
}
.scenario-list strong,.download-list strong{
  display:block;
  margin:8px 0;
  font-size:22px;
}

.strength-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.strength-card{
  padding:26px;
  border-radius:30px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.strength-card small{
  display:block;
  font-size:48px;
  line-height:1;
  font-weight:900;
  color:rgba(137,208,255,.30);
}

.product-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.product-card{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:0;
  border-radius:32px;
  overflow:hidden;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.product-media{
  min-height:340px;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:radial-gradient(circle at center,rgba(76,202,255,.14),transparent 62%);
}
.product-media img{max-height:250px;filter:drop-shadow(0 24px 34px rgba(0,0,0,.40))}
.product-content{padding:26px}
.product-content span{
  display:block;
  color:var(--primary-2);
  font-size:12px;
  font-weight:900;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.product-content ul{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  list-style:none;
  padding:0;
  margin:18px 0 0;
}
.product-content li,.support-tags span{
  padding:8px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;
  color:#ddf3ff;
}

.compare-panel{
  padding:28px;
  border-radius:32px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.compare-table{
  overflow:hidden;
  border-radius:24px;
  border:1px solid var(--line);
}
.compare-head,.compare-row{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.3fr 1.2fr 1fr .65fr;
  gap:14px;
  align-items:center;
  padding:18px 20px;
}
.compare-head{
  background:rgba(76,202,255,.12);
  color:#fff;
  font-weight:900;
}
.compare-row{border-top:1px solid var(--line)}
.mini-btn{
  padding:9px 12px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);
  color:#fff;
  cursor:pointer;
}

.knowledge-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.knowledge-card{
  padding:28px;
  border-radius:30px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}

.support-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.support-actions{margin-top:24px}
.support-panel{
  display:grid;
  gap:14px;
  padding:18px;
  border-radius:32px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.support-panel article{
  padding:20px;
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.support-panel strong{
  display:block;
  margin:10px 0;
  word-break:break-all;
  color:#e3f7ff;
}

.portal-strip{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  padding:30px;
  border-radius:32px;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(76,202,255,.16),rgba(255,255,255,.04)),
    rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.portal-strip p{max-width:720px;color:var(--muted)}

.faq-wrap{max-width:980px}
.faq-list{display:grid;gap:14px}
.faq-list details{
  padding:19px 22px;
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.faq-list summary{
  list-style:none;
  cursor:pointer;
  font-weight:900;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list p{margin-top:10px}

.site-footer{
  margin-top:36px;
  background:#04101d;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:flex;
  justify-content:space-between;
  gap:24px;
  padding:34px 0;
}
.footer-brand strong{font-size:28px}
.footer-brand p{max-width:650px;margin-top:10px}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:8px;
  align-items:flex-end;
}
.footer-contact{
  padding:12px 18px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  color:#fff;
  cursor:pointer;
}

/* Modal */
.contact-modal{
  display:none;
  position:fixed;
  inset:0;
  z-index:140;
  align-items:center;
  justify-content:center;
}
.contact-modal.open{display:flex}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,.72);
  backdrop-filter:blur(8px);
}
.modal-panel{
  position:relative;
  z-index:2;
  width:min(450px, calc(100% - 26px));
  padding:28px;
  border-radius:32px;
  border:1px solid var(--line-2);
  background:linear-gradient(180deg,#0d1931,#0a1324);
  box-shadow:0 40px 120px rgba(0,0,0,.55);
  text-align:center;
}
.modal-close{
  position:absolute;
  right:14px;
  top:10px;
  border:0;
  background:transparent;
  color:#fff;
  font-size:30px;
  cursor:pointer;
}
.modal-panel h2{
  margin:10px 0 18px;
  font-size:42px;
  line-height:1;
  letter-spacing:-.05em;
}
.qr-box{
  width:min(300px,100%);
  margin:0 auto;
  padding:14px;
  border-radius:24px;
  background:#fff;
}
.modal-links{
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
  margin-top:18px;
}
.modal-links a{
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
}
.float-contact{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:100;
  padding:14px 18px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background:linear-gradient(135deg,var(--primary),#8fe8ff);
  color:#05111f;
  font-weight:900;
  cursor:pointer;
  box-shadow:0 20px 40px rgba(76,202,255,.24);
}
body.lock{overflow:hidden}

/* Entry page */
.entry-hero{padding:56px 0 40px}
.entry-hero-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:24px;
  align-items:center;
}
.entry-panel{
  display:grid;
  gap:14px;
  padding:18px;
  border-radius:32px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.entry-panel article{
  padding:22px;
  border-radius:24px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.entry-panel strong{
  display:block;
  margin-top:10px;
  color:#def7ff;
}
.entry-link-section{padding-top:0}
.entry-links{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.entry-link-card{
  padding:26px;
  border-radius:30px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  box-shadow:var(--shadow);
}
.entry-link-card span{
  display:block;
  color:var(--primary-2);
  font-size:12px;
  font-weight:900;
  letter-spacing:.15em;
  text-transform:uppercase;
}

/* reveal */
.reveal{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .65s ease, transform .65s ease;
}
.reveal.visible{
  opacity:1;
  transform:none;
}

@media (max-width:1180px){
  .main-nav,.nav-actions{display:none}
  .menu-toggle{display:block}
  .nav-shell.open .main-nav{
    display:flex;
    position:absolute;
    left:0;
    right:0;
    top:74px;
    flex-direction:column;
    gap:0;
    padding:10px;
    border-radius:22px;
    background:#0b1730;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
  }
  .nav-shell.open .main-nav a{padding:12px 14px}
  .nav-shell.open .nav-actions{
    display:flex;
    position:absolute;
    left:0;
    right:0;
    top:470px;
    padding:12px;
    border-radius:22px;
    background:#0b1730;
    border:1px solid var(--line);
    box-shadow:var(--shadow);
    gap:10px;
  }
  .hero-grid,.overview-grid,.scenario-grid,.download-grid,.security-grid,.support-grid,.entry-hero-grid{grid-template-columns:1fr}
  .gateway-grid{grid-template-columns:1fr 1fr}
  .gateway-primary{grid-row:auto;grid-column:span 2}
  .strength-grid,.knowledge-grid,.entry-links{grid-template-columns:repeat(2,1fr)}
  .product-grid{grid-template-columns:1fr}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr 1fr}
  .footer-grid,.portal-strip{flex-direction:column;align-items:flex-start}
  .footer-links{align-items:flex-start}
}
@media (max-width:760px){
  .container{width:min(var(--container), calc(100% - 24px))}
  .section-title h2,
  .hero-copy h1,
  .overview-copy h2,
  .scenario-copy h2,
  .download-copy h2,
  .security-copy h2,
  .support-copy h2,
  .portal-strip h2,
  .entry-copy h1{font-size:42px}
  .hero-actions,.download-actions,.support-actions,.nav-shell.open .nav-actions{flex-direction:column}
  .hero-mini-grid,.overview-list,.strength-grid,.scenario-list,.download-list,.security-list,.knowledge-grid,.entry-links,.compare-row{grid-template-columns:1fr}
  .gateway-grid{grid-template-columns:1fr}
  .gateway-primary{grid-column:auto}
  .hero-visual{min-height:480px}
  .hero-main{width:260px;height:330px}
  .hero-main img{max-height:285px}
  .hero-side,.hero-float,.hero-orbit{display:none}
  .product-card{grid-template-columns:1fr}
  .btn{width:100%}
  .footer-links{width:100%}
  .footer-links a,.footer-contact{width:100%;text-align:center}
}