:root{
  --text:#f7fbff;
  --muted:#d7e4f4;
  --muted2:#9db4cf;
  --line:rgba(255,255,255,.10);
  --shadow:0 18px 60px rgba(8,28,64,.20);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 14% 8%, rgba(125,211,252,.28), transparent 22%),
    radial-gradient(circle at 88% 10%, rgba(129,140,248,.25), transparent 24%),
    radial-gradient(circle at 68% 72%, rgba(34,197,94,.12), transparent 26%),
    linear-gradient(180deg,#0d213f 0%, #10305a 36%, #0c2343 100%);
}
a{color:inherit;text-decoration:none}
button{font:inherit}
.container{max-width:1240px;margin:0 auto;padding:0 26px}
.page-wrap{padding-top:106px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 18px;border-radius:14px;
  font-weight:700;font-size:15px;transition:.22s ease;border:1px solid transparent;cursor:pointer
}
.btn-primary{background:#fff;color:#0d1524}
.btn-primary:hover{transform:translateY(-1px);background:#edf2fb}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.10)}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:13px;color:#e7f2ff
}
.section{padding:34px 0 74px}
.section-title{font-size:34px;line-height:1.2;margin:0}
.section-desc{margin:12px 0 0;color:var(--muted);font-size:16px;line-height:1.85;max-width:860px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:#e4effd;font-size:13px
}
.eyebrow-dot{width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#8fd3ff,#6ef2c7);box-shadow:0 0 18px rgba(143,211,255,.75)}

/* header */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:100;pointer-events:none}
.header-shell{max-width:1320px;margin:0 auto;padding:0 16px}
.header-bar{
  pointer-events:auto;min-height:72px;background:rgba(14,35,67,.72);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);border-radius:22px;box-shadow:var(--shadow);
  padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:18px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(135deg,#9dd5ff,#7f8cff 56%,#6ef2c7);
  box-shadow:0 10px 30px rgba(127,140,255,.35);flex:0 0 auto;
}
.brand-text strong{display:block;font-size:17px;letter-spacing:.03em}
.brand-text span{display:block;color:var(--muted2);font-size:12px;margin-top:4px;white-space:nowrap}
.header-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;height:46px;padding:0 14px;border-radius:12px;
  color:#edf5ff;font-size:15px;font-weight:600
}
.nav-link:hover,.nav-item:hover>.nav-link{background:rgba(255,255,255,.07)}
.caret{font-size:10px;opacity:.82}
.mega{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(8px);
  width:min(1100px, calc(100vw - 44px));opacity:0;visibility:hidden;transition:.2s ease;
  background:rgba(15,33,60,.97);backdrop-filter:blur(18px);
  border:1px solid rgba(255,255,255,.10);border-radius:22px;box-shadow:0 24px 70px rgba(0,0,0,.28);
  padding:18px;
}
.nav-item:hover .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-grid{display:grid;grid-template-columns:1.15fr 1.15fr .9fr;gap:18px}
.mega-col{padding:6px 4px}
.mega-title{color:var(--muted2);font-size:12px;letter-spacing:.08em;margin:4px 10px 10px}
.mega-list{display:grid;gap:8px}
.mega-card{display:block;padding:14px 14px 12px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.mega-card:hover{background:rgba(255,255,255,.08)}
.mega-card b{display:block;font-size:14px;line-height:1.4}
.mega-card span{display:block;margin-top:6px;color:var(--muted2);font-size:12px;line-height:1.55}
.mega-feature{
  border-radius:18px;padding:18px;background:
    radial-gradient(circle at 70% 18%, rgba(99,102,241,.22), transparent 24%),
    radial-gradient(circle at 18% 78%, rgba(16,185,129,.18), transparent 24%),
    linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.07);min-height:100%
}
.mega-feature h4{margin:0 0 12px;font-size:20px}
.mega-feature p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
.mega-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.mega-tag{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.07);font-size:12px;color:#edf5ff}
.header-cta{display:flex;align-items:center;gap:10px}
.mobile-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);color:#fff
}
.mobile-toggle span,.mobile-toggle:before,.mobile-toggle:after{content:"";display:block;width:18px;height:2px;background:#fff;margin:0 auto;border-radius:2px}
.mobile-toggle span{margin:5px auto}
.mobile-menu{
  display:none;pointer-events:auto;margin-top:12px;background:rgba(15,33,60,.97);backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.10);border-radius:20px;box-shadow:0 22px 60px rgba(0,0,0,.28);overflow:hidden
}
.mobile-menu.open{display:block}
.mobile-section{border-top:1px solid rgba(255,255,255,.06)}
.mobile-section:first-child{border-top:none}
.mobile-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;background:none;border:none;color:#fff;padding:16px 18px;font-weight:700}
.mobile-head .m-caret{transition:.18s ease}
.mobile-section.open .m-caret{transform:rotate(180deg)}
.mobile-body{display:none;padding:0 18px 16px}
.mobile-section.open .mobile-body{display:grid;gap:8px}
.mobile-link{display:block;padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.04);color:#eaf3ff;font-size:14px}

/* hero */
.hero{padding:64px 0 36px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.hero-copy{padding:10px 0 6px}
.hero h1{margin:18px 0 16px;font-size:58px;line-height:1.06;letter-spacing:-.03em}
.hero h1 .soft{display:block;color:#dff0ff}
.hero p{margin:0;max-width:720px;color:var(--muted);font-size:20px;line-height:1.9}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}

/* carousel */
.carousel-shell{
  position:relative;min-height:520px;border-radius:28px;overflow:hidden;border:1px solid var(--line);
  background:
    radial-gradient(circle at 20% 15%, rgba(56,189,248,.24), transparent 22%),
    radial-gradient(circle at 78% 18%, rgba(129,140,248,.22), transparent 24%),
    radial-gradient(circle at 68% 70%, rgba(16,185,129,.14), transparent 20%),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow:var(--shadow);padding:24px;
}
.carousel-track{position:relative;height:100%}
.slide{
  position:absolute;inset:0;opacity:0;transform:translateX(12px);transition:.45s ease;
  display:grid;grid-template-rows:auto 1fr auto;gap:16px;padding:10px 8px;
}
.slide.active{opacity:1;transform:translateX(0)}
.slide-badge{font-size:12px;color:var(--muted2);letter-spacing:.08em}
.slide-title{font-size:40px;line-height:1.08;font-weight:800;margin:0}
.slide-desc{color:var(--muted);font-size:18px;line-height:1.9;max-width:480px;margin:0}
.slide-panel{
  align-self:end;display:grid;grid-template-columns:1fr 1fr;gap:14px;
}
.slide-box{
  padding:16px 18px;border-radius:18px;background:rgba(12,25,48,.55);
  border:1px solid rgba(255,255,255,.08);backdrop-filter:blur(8px)
}
.slide-box small{display:block;color:var(--muted2);font-size:12px}
.slide-box strong{display:block;margin-top:8px;font-size:17px;line-height:1.45}
.carousel-nav{
  margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:18px
}
.carousel-dots{display:flex;gap:8px;flex-wrap:wrap}
.dot{
  width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.18);
  border:none;cursor:pointer;padding:0
}
.dot.active{background:#fff}
.carousel-links{display:flex;gap:12px;flex-wrap:wrap}
.carousel-link{
  padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);font-size:14px;color:#eef6ff
}

/* homepage sections */
.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.product-card{
  position:relative;min-height:300px;border-radius:24px;padding:22px;background:
    linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden
}
.product-card:before{content:"";position:absolute;inset:auto -35% -35% auto;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle, rgba(143,211,255,.18), transparent 60%)}
.product-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.product-icon{
  width:54px;height:54px;border-radius:18px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(143,211,255,.22),rgba(127,140,255,.18));
  border:1px solid rgba(255,255,255,.08);font-size:24px
}
.product-no{font-size:12px;color:var(--muted2);letter-spacing:.12em}
.product-card h3{margin:16px 0 10px;font-size:28px;line-height:1.14}
.product-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}
.product-card .meta{margin-top:16px;color:#eff6ff;font-size:13px}
.product-card .link{margin-top:20px;display:inline-flex;color:#cbe5ff;font-weight:700}

.simple-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.simple-card{padding:22px;border-radius:22px;background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:var(--shadow);min-height:180px}
.simple-card h3{margin:0 0 12px;font-size:24px}
.simple-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}

.page-intro{padding:38px 0 20px}
.page-intro h1{margin:14px 0 12px;font-size:56px;line-height:1.1}
.page-intro p{margin:0;max-width:920px;color:var(--muted);font-size:20px;line-height:1.9}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.info-box{border-radius:26px;padding:28px;background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:var(--shadow)}
.info-box h3{margin:0 0 14px;font-size:28px}
.info-box p{margin:0;color:var(--muted);font-size:16px;line-height:1.9}
.info-list{display:grid;gap:14px;margin-top:18px}
.info-item{padding:16px 18px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--line);font-size:16px;line-height:1.8}
.info-item span{display:block;color:var(--muted2);font-size:13px;margin-bottom:6px}

.product-page-nav{position:sticky;top:106px;z-index:30;margin:20px 0 26px;padding:12px;border-radius:18px;background:rgba(15,33,60,.78);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.10);display:flex;gap:10px;flex-wrap:wrap}
.product-page-nav a{padding:10px 14px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);color:#eef6ff;font-size:14px}
.product-page-nav a:hover{background:rgba(255,255,255,.08)}

.breadcrumb{padding-top:6px;color:var(--muted2);font-size:14px}
.detail-hero{padding:38px 0 20px}
.detail-hero h1{font-size:56px;line-height:1.1;margin:14px 0 12px}
.detail-hero p{margin:0;max-width:920px;color:var(--muted);font-size:20px;line-height:1.9}
.detail-highlight{margin-top:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.detail-card{padding:18px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
.detail-card b{display:block;font-size:20px}
.detail-card span{display:block;margin-top:8px;color:var(--muted2);font-size:13px;line-height:1.6}
.detail-box{border-radius:24px;padding:28px;background:rgba(255,255,255,.04);border:1px solid var(--line);box-shadow:var(--shadow)}
.detail-box p,.detail-box li{color:var(--muted);font-size:16px;line-height:1.9}
.detail-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}
.detail-item{padding:16px 18px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
.detail-item strong{display:block;font-size:18px}
.detail-item span{display:block;margin-top:8px;color:var(--muted2);font-size:14px;line-height:1.7}

/* footer */
.site-footer{
  background:
    linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0)),
    linear-gradient(135deg,#17335a 0%, #102643 100%);
  border-top:1px solid rgba(255,255,255,.10);margin-top:30px
}
.footer-top{padding:54px 0 30px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1.15fr;gap:30px}
.footer-brand h2{margin:0;font-size:34px;line-height:1.12}
.footer-brand .slogan{margin-top:12px;font-size:16px;font-weight:700;letter-spacing:.02em;color:#eff6ff}
.footer-brand .slogan-cn{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.8}
.footer-col h4{margin:0 0 18px;color:#eef6ff;font-size:18px}
.footer-links{display:grid;gap:12px}
.footer-links a{color:var(--muted);font-size:15px;line-height:1.65}
.footer-links a:hover{color:#fff}
.footer-contact .phone{font-size:40px;line-height:1.1;font-weight:800;margin:0 0 10px}
.footer-contact p{margin:0 0 16px;color:var(--muted);font-size:14px;line-height:1.8}
.footer-icons{display:flex;gap:10px;margin-top:18px}
.footer-icon{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);color:#fff;font-size:13px;font-weight:700}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:16px 0 24px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:var(--muted2);font-size:13px}
.record-links{display:flex;flex-wrap:wrap;gap:14px}

@media (max-width:1180px){
  .hero-grid,.info-grid{grid-template-columns:1fr}
  .product-grid,.simple-grid{grid-template-columns:repeat(3,1fr)}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr}
  .mega{width:min(980px, calc(100vw - 44px))}
  .mega-grid{grid-template-columns:1fr 1fr}
  .mega-feature{grid-column:1/-1}
  .hero h1{font-size:52px}
}
@media (max-width:940px){
  .header-nav,.header-cta .btn{display:none}
  .mobile-toggle{display:grid;place-items:center}
  .page-wrap{padding-top:98px}
  .product-page-nav{top:98px}
}
@media (max-width:820px){
  .container{padding:0 18px}
  .hero{padding:48px 0 26px}
  .hero h1,.page-intro h1{font-size:40px}
  .hero p,.detail-hero p,.page-intro p{font-size:18px}
  .product-grid,.simple-grid,.detail-highlight,.detail-list{grid-template-columns:1fr 1fr}
  .section-title{font-size:30px}
  .detail-hero h1{font-size:38px}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .product-grid,.simple-grid,.detail-highlight,.detail-list{grid-template-columns:1fr}
  .carousel-shell{min-height:440px}
  .hero h1{font-size:34px}
  .slide-title{font-size:30px}
  .slide-panel{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .footer-contact .phone{font-size:30px}
  .footer-bottom{flex-direction:column}
}


/* contact page form */
.contact-page{
  padding: 34px 0 78px;
}
.contact-shell{
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.10);
  box-shadow: var(--shadow);
  background: rgba(255,255,255,.04);
}
.contact-head{
  padding: 26px 28px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.contact-head h1{
  margin: 0;
  font-size: 42px;
  line-height: 1.12;
}
.contact-head p{
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
  max-width: 860px;
}
.contact-layout{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 0;
}
.form-pane{
  background: rgba(255,255,255,.92);
  color: #172333;
  padding: 28px;
}
.form-pane h2{
  margin: 0 0 20px;
  font-size: 20px;
  color: #172333;
}
.form-grid{
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 18px 22px;
}
.field{
  display: grid;
  gap: 8px;
}
.field.full{
  grid-column: 1 / -1;
}
.field label{
  font-size: 14px;
  color: #5a6b82;
}
.input, .select, .textarea{
  width: 100%;
  border: none;
  border-bottom: 1px solid #ccd5e1;
  background: transparent;
  color: #172333;
  padding: 12px 2px 10px;
  outline: none;
  font-size: 16px;
  border-radius: 0;
}
.select{
  appearance: none;
}
.textarea{
  min-height: 88px;
  resize: vertical;
}
.checkbox-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
  padding-top: 6px;
}
.check-item{
  display: flex;
  align-items: center;
  gap: 10px;
  color: #25364d;
  font-size: 15px;
}
.check-item input{
  width: 16px;
  height: 16px;
}
.form-actions{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 26px;
  flex-wrap: wrap;
}
.submit-btn{
  min-width: 220px;
  min-height: 48px;
  border: none;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  background: linear-gradient(135deg,#7f8cff,#45c2ff);
  box-shadow: 0 14px 34px rgba(76,126,255,.30);
}
.privacy-row{
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #495a70;
}
.message-bar{
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 14px;
  display: none;
}
.message-bar.success{
  display: block;
  background: #e9f8ef;
  color: #166534;
}
.message-bar.error{
  display: block;
  background: #fff1f2;
  color: #b42318;
}
.contact-side{
  padding: 28px;
  background:
    radial-gradient(circle at 80% 18%, rgba(129,140,248,.20), transparent 24%),
    radial-gradient(circle at 18% 80%, rgba(34,197,94,.14), transparent 24%),
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
}
.side-card{
  border-radius: 24px;
  padding: 24px;
  background: rgba(10,20,36,.48);
  border: 1px solid rgba(255,255,255,.08);
}
.side-card h3{
  margin: 0 0 10px;
  font-size: 28px;
}
.side-card p{
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}
.quick-contact{
  margin-top: 28px;
}
.quick-contact h4{
  margin: 0 0 12px;
  font-size: 16px;
  color: #eaf4ff;
}
.quick-row{
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.quick-item{
  position: relative;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.06);
  color: #fff;
  font-size: 18px;
}
.quick-item:hover{
  background: rgba(255,255,255,.12);
}
.quick-pop{
  position: absolute;
  left: 0;
  bottom: calc(100% + 12px);
  width: 250px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(11,20,34,.96);
  border: 1px solid rgba(255,255,255,.10);
  box-shadow: 0 20px 50px rgba(0,0,0,.30);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: .18s ease;
  z-index: 8;
}
.quick-item:hover .quick-pop{
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.quick-pop h5{
  margin: 0 0 10px;
  font-size: 15px;
}
.quick-pop p{
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}
.quick-pop img{
  width: 130px;
  height: 130px;
  object-fit: cover;
  background: #fff;
  border-radius: 10px;
  margin-top: 10px;
}
.contact-note{
  margin-top: 24px;
  color: var(--muted2);
  font-size: 13px;
  line-height: 1.8;
}
@media (max-width: 1080px){
  .contact-layout{
    grid-template-columns: 1fr;
  }
}
@media (max-width: 820px){
  .form-grid{
    grid-template-columns: 1fr;
  }
  .checkbox-grid{
    grid-template-columns: 1fr;
  }
  .contact-head h1{
    font-size: 34px;
  }
}


/* v12 footer contact simplification */
.footer-contact p{display:none}
.footer-contact .phone{display:none}
.footer-contact .footer-title{
  font-size:18px;
  font-weight:700;
  margin:0 0 14px;
  color:#eef6ff;
}
.footer-contact .footer-icons{
  margin-top:0;
}
.footer-contact .footer-icon{
  position:relative;
  cursor:pointer;
}
.footer-pop{
  position:absolute;
  right:0;
  bottom:calc(100% + 12px);
  width:250px;
  padding:14px;
  border-radius:18px;
  background:rgba(11,20,34,.96);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 20px 50px rgba(0,0,0,.30);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:.18s ease;
  z-index:8;
}
.footer-icon:hover .footer-pop{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.footer-pop h5{
  margin:0 0 10px;
  font-size:15px;
}
.footer-pop p{
  display:block;
  margin:0;
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.footer-pop img{
  width:130px;
  height:130px;
  object-fit:cover;
  background:#fff;
  border-radius:10px;
  margin-top:10px;
}


/* v13 footer icon buttons */
.footer-contact .footer-icons{
  display:flex;
  gap:12px;
  margin-top:0;
}
.footer-contact .footer-icon{
  position:relative;
  width:48px;
  height:48px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  color:#fff;
  cursor:pointer;
  overflow:visible;
}
.footer-contact .footer-icon svg{
  width:22px;
  height:22px;
  fill:none;
  stroke:#fff;
  stroke-width:1.9;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.footer-pop{
  position:absolute;
  right:0;
  bottom:calc(100% + 12px);
  width:260px;
  padding:14px;
  border-radius:18px;
  background:rgba(11,20,34,.96);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 20px 50px rgba(0,0,0,.30);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:.18s ease;
  z-index:12;
}
.footer-icon:hover .footer-pop{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
.footer-pop h5{
  margin:0 0 10px;
  font-size:15px;
}
.footer-pop p{
  display:block;
  margin:0;
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.footer-pop img{
  width:130px;
  height:130px;
  object-fit:cover;
  background:#fff;
  border-radius:10px;
  margin-top:10px;
}

/* v13 contact form validation */
.field .help{
  font-size:12px;
  color:#7b8ca3;
  line-height:1.6;
}
.input.invalid{
  border-bottom-color:#c21c33;
}
.inline-error{
  font-size:12px;
  color:#c21c33;
  display:none;
}
.inline-error.show{
  display:block;
}

/* v16 RTK featured */
.hero-grid--rtk{
  grid-template-columns: 1.02fr .98fr;
}
.rtk-hero-visual{
  position:relative;
  min-height:520px;
  border-radius:28px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow);
  background:
    radial-gradient(circle at 80% 18%, rgba(129,140,248,.20), transparent 24%),
    radial-gradient(circle at 18% 78%, rgba(34,197,94,.14), transparent 24%),
    linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
}
.rtk-hero-visual img{
  width:100%;
  height:100%;
  object-fit:contain;
  padding:36px;
  filter:drop-shadow(0 24px 48px rgba(0,0,0,.28));
}
.rtk-pill-row{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:22px;
}
.rtk-pill{
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  color:#eef6ff;
  font-size:14px;
}
.featured-banner{
  margin-top:14px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:9px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  color:#f7fbff;
  font-size:13px;
}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.metric-card{
  padding:20px;
  border-radius:22px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow);
}
.metric-card strong{
  display:block;
  font-size:28px;
  line-height:1.1;
}
.metric-card span{
  display:block;
  margin-top:8px;
  color:var(--muted);
  font-size:14px;
  line-height:1.7;
}
.rtk-detail-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.spec-table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
}
.spec-table th,
.spec-table td{
  padding:12px 14px;
  border-bottom:1px solid rgba(255,255,255,.08);
  vertical-align:top;
}
.spec-table th{
  width:36%;
  text-align:left;
  color:#dbe8fa;
  font-weight:700;
}
.spec-table td{
  color:var(--muted);
}
.placeholder-note{
  color:var(--muted2);
  font-size:14px;
  line-height:1.8;
  margin-top:8px;
}
.placeholder-box{
  min-height:220px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
}
@media (max-width: 1180px){
  .hero-grid--rtk,
  .rtk-detail-grid{
    grid-template-columns:1fr;
  }
  .metric-grid{
    grid-template-columns:repeat(2,1fr);
  }
}
@media (max-width: 640px){
  .metric-grid{
    grid-template-columns:1fr;
  }
}

/* v18 unitree-inspired refinements */
body{
  background:
    radial-gradient(circle at 16% 12%, rgba(93,165,255,.22), transparent 24%),
    radial-gradient(circle at 84% 10%, rgba(129,140,248,.18), transparent 24%),
    linear-gradient(180deg,#0f2b52 0%, #123765 38%, #0d2a4f 100%);
}
.site-header{top:0}
.header-shell{max-width:none;padding:0}
.header-bar{
  min-height:78px;background:#ffffff;backdrop-filter:none;border:none;border-radius:0;
  box-shadow:none;border-bottom:1px solid rgba(13,21,36,.10);padding:0 34px;
}
.brand-text strong a,.brand-text strong{color:#111827}
.brand-text span{color:#6b7280}
.header-nav{justify-content:flex-start;gap:8px;margin-left:26px}
.nav-link{
  color:#111827;height:78px;border-radius:0;padding:0 12px;position:relative;
}
.nav-link:hover,.nav-item:hover>.nav-link{background:transparent}
.nav-item>.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:#111827;opacity:0;transition:.18s ease;
}
.nav-item:hover>.nav-link::after{opacity:1}
.mega{
  top:100%;background:#ffffff;backdrop-filter:none;border:1px solid rgba(13,21,36,.08);
  border-radius:0 0 18px 18px;box-shadow:0 24px 56px rgba(15,23,42,.12);
}
.mega-title{color:#6b7280}
.mega-card{background:#f7f8fb;border:1px solid rgba(13,21,36,.06)}
.mega-card b{color:#111827}
.mega-card span{color:#6b7280}
.mega-feature{background:linear-gradient(180deg,#f8fafc,#eef4ff);border:1px solid rgba(13,21,36,.06)}
.mega-feature h4{color:#111827}
.mega-feature p{color:#4b5563}
.mega-tag{background:#ffffff;color:#111827;border:1px solid rgba(13,21,36,.08)}
.header-cta .btn-ghost{
  background:#1677ff;border-color:#1677ff;color:#ffffff;min-height:40px;border-radius:10px;padding:0 20px;
}
.header-cta .btn-ghost:hover{background:#0f67e6}
.mobile-toggle{border-color:rgba(13,21,36,.12);background:#fff;color:#111827}
.mobile-toggle span,.mobile-toggle:before,.mobile-toggle:after{background:#111827}
.mobile-menu{background:#fff;border:1px solid rgba(13,21,36,.08);box-shadow:0 20px 40px rgba(15,23,42,.12)}
.mobile-head{color:#111827}
.mobile-link{background:#f7f8fb;color:#111827}
.page-wrap{padding-top:90px}

.hero{padding:54px 0 34px}
.hero-grid--rtk{grid-template-columns:.95fr 1.05fr}
.rtk-panel{
  border-radius:24px;padding:34px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow);
}
.rtk-image-card{padding:0;overflow:hidden;background:#f3f4f6}
.rtk-image-card img{
  width:100%;height:100%;object-fit:cover;display:block;min-height:520px;
}
.rtk-section-title{
  font-size:60px;line-height:1.02;margin:16px 0 18px;letter-spacing:-.03em;
}
.rtk-section-desc{
  font-size:19px;line-height:1.9;color:var(--muted);max-width:760px;margin:0;
}
.rtk-home-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.rtk-pill{
  padding:10px 14px;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);font-size:14px;color:#eef6ff;
}
.rtk-kpis{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:26px}
.rtk-kpi{
  padding:18px 20px;border-radius:18px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
}
.rtk-kpi strong{display:block;font-size:34px;line-height:1.08}
.rtk-kpi span{display:block;margin-top:8px;color:var(--muted);font-size:14px}
.rtk-two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:20px}
.rtk-feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.rtk-feature-card{
  padding:22px;border-radius:22px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow);
}
.rtk-feature-card h3{margin:0 0 12px;font-size:24px}
.rtk-feature-card p{margin:0;color:var(--muted);line-height:1.85}
.rtk-spec-compare{
  width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:24px;
  background:#06090f;border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow);
}
.rtk-spec-compare thead th{
  background:#06090f;color:#fff;font-size:22px;text-align:left;padding:20px 18px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.rtk-spec-compare thead th:nth-child(1){width:28%;font-size:18px;color:#f4d9ff}
.rtk-spec-compare tbody th{
  text-align:left;color:#fff;font-size:15px;padding:15px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);border-right:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg,#1a1024,#1b1429);
}
.rtk-spec-compare tbody td{
  color:#f3f4f6;font-size:15px;padding:15px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);border-right:1px solid rgba(255,255,255,.08);
  vertical-align:top;
}
.rtk-spec-compare tbody tr:last-child th,
.rtk-spec-compare tbody tr:last-child td{border-bottom:none}
.rtk-spec-compare td:last-child,.rtk-spec-compare th:last-child{border-right:none}
.rtk-note{color:var(--muted);font-size:14px;line-height:1.8;margin-top:12px}
.rtk-price-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.rtk-price{
  padding:18px 20px;border-radius:18px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
}
.rtk-price strong{display:block;font-size:28px}
.rtk-price span{display:block;margin-top:8px;color:var(--muted);line-height:1.7}
.placeholder-note{color:var(--muted2);font-size:14px;line-height:1.8;margin-top:8px}
.placeholder-box{min-height:220px;display:flex;flex-direction:column;justify-content:flex-end}
@media (max-width:1200px){
  .rtk-two-col,.hero-grid--rtk{grid-template-columns:1fr}
  .rtk-feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .header-nav,.header-cta .btn-ghost{display:none}
  .mobile-toggle{display:grid;place-items:center}
  .page-wrap{padding-top:88px}
  .rtk-section-title{font-size:42px}
}
@media (max-width:680px){
  .rtk-kpis,.rtk-price-strip,.rtk-feature-grid{grid-template-columns:1fr}
  .rtk-spec-compare{display:block;overflow-x:auto;white-space:nowrap}
}


/* v19 refinements: centered top nav + immersive RTK sections */
.header-shell{max-width:none;padding:0}
.header-bar{
  display:grid;
  grid-template-columns:minmax(300px,1fr) auto minmax(180px,1fr);
  align-items:center;
  min-height:76px;
  padding:0 28px;
}
.brand{min-width:0}
.header-nav{
  flex:none;
  justify-content:center;
  gap:10px;
  margin:0 auto;
}
.nav-link{
  padding:0 16px;
  font-weight:700;
}
.header-cta{
  justify-self:end;
  width:100%;
  justify-content:flex-end;
}
.brand-text strong{font-size:16px}
.brand-text span{font-size:12px}
@media (max-width: 1100px){
  .header-bar{display:flex}
}

.rtk-image-card{
  background:#efefef;
}
.rtk-image-card img{
  object-fit:contain;
  padding:22px;
  min-height:500px;
}
.rtk-hero-visual img{
  min-height:540px;
}

.story-stack{
  display:grid;
  gap:28px;
  margin-top:26px;
}
.story-block{
  display:grid;
  grid-template-columns:1.04fr .96fr;
  gap:0;
  border-radius:32px;
  overflow:hidden;
  background:#071222;
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow);
  min-height:430px;
}
.story-block.reverse{
  grid-template-columns:.96fr 1.04fr;
}
.story-content{
  padding:46px 42px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  background:
    radial-gradient(circle at 16% 22%, rgba(71,144,255,.20), transparent 30%),
    radial-gradient(circle at 85% 12%, rgba(101,85,255,.16), transparent 28%),
    linear-gradient(180deg,#0c2546 0%, #0b2a52 55%, #0b2344 100%);
}
.story-kicker{
  display:inline-flex;
  width:max-content;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  color:#e7f2ff;
  font-size:13px;
}
.story-title{
  margin:18px 0 14px;
  font-size:44px;
  line-height:1.08;
  letter-spacing:-.03em;
}
.story-desc{
  margin:0;
  color:var(--muted);
  font-size:18px;
  line-height:1.95;
  max-width:560px;
}
.story-points{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-top:26px;
}
.story-point{
  padding:16px 18px;
  border-radius:18px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.09);
}
.story-point strong{
  display:block;
  font-size:18px;
  margin-bottom:8px;
}
.story-point span{
  display:block;
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}
.story-media{
  position:relative;
  min-height:100%;
  overflow:hidden;
  background:#0b1020;
}
.story-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(4,10,20,.12), rgba(4,10,20,.38));
}
.story-media img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
  background:#efefef;
  padding:26px;
}
.story-media.dark img{
  background:linear-gradient(180deg,#0c1628,#111e32);
}
.story-overlay{
  position:absolute;
  left:30px;
  right:30px;
  bottom:28px;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.story-chip{
  padding:9px 12px;
  border-radius:999px;
  background:rgba(7,18,34,.72);
  border:1px solid rgba(255,255,255,.12);
  color:#eef6ff;
  font-size:13px;
}
.story-mini-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
  margin-top:24px;
}
.story-mini-card{
  position:relative;
  min-height:310px;
  border-radius:28px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.09);
  box-shadow:var(--shadow);
  background:#071222;
}
.story-mini-card .story-media,
.story-mini-card .story-content{
  position:absolute;
  inset:0;
}
.story-mini-card .story-content{
  justify-content:flex-end;
  background:linear-gradient(180deg, rgba(3,8,16,.08) 0%, rgba(3,8,16,.26) 26%, rgba(6,12,22,.85) 100%);
  padding:30px;
  z-index:2;
}
.story-mini-card .story-title{
  font-size:34px;
  margin:14px 0 10px;
}
.story-mini-card .story-desc{
  font-size:16px;
  max-width:none;
}
@media (max-width: 1100px){
  .story-block,.story-block.reverse{grid-template-columns:1fr}
  .story-media{min-height:360px}
}
@media (max-width: 720px){
  .story-points,.story-mini-grid{grid-template-columns:1fr}
  .story-content{padding:30px 24px}
  .story-title{font-size:34px}
}