:root {
  --brand: #ef1717;
  --brand-2: #ff4a3d;
  --ink: #111827;
  --ink-2: #344054;
  --muted: #667085;
  --line: #e8ebef;
  --soft: #f6f7f9;
  --dark: #07111f;
  --dark-2: #0d1c30;
  --dark-3: #102743;
  --white: #ffffff;
  --max: 1220px;
  --radius: 24px;
  --shadow: 0 24px 80px rgba(11, 29, 48, .12);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.section { padding: 108px 0; }
.section-soft { background: var(--soft); }
.section-dark { background: var(--dark); color: white; }
.section-kicker { display: inline-block; margin-bottom: 14px; color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .17em; }
.section-heading { max-width: 760px; margin-bottom: 48px; }
.section-heading h2, .section-intro h2 { font-size: clamp(34px, 4vw, 52px); line-height: 1.13; letter-spacing: -.025em; }
.section-heading p { margin-top: 18px; color: var(--muted); font-size: 17px; max-width: 720px; }
.section-heading.inverse p { color: #a7b7ca; }
.section-heading.inverse h2 { color: white; }
.two-col { display: grid; grid-template-columns: .95fr 1.05fr; gap: 88px; align-items: start; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(17,24,39,.07); backdrop-filter: blur(16px); }
.header-inner { height: 82px; display: grid; grid-template-columns: 180px 1fr auto; align-items: center; gap: 26px; }
.brand img { width: 134px; height: 54px; object-fit: contain; object-position: left center; display: block; }
.main-nav { display: flex; justify-content: center; align-items: center; gap: 27px; font-size: 14px; font-weight: 650; color: #273548; }
.main-nav > a, .nav-dropdown-btn { transition: color .2s ease; }
.main-nav > a:hover, .nav-dropdown:hover .nav-dropdown-btn { color: var(--brand); }
.nav-dropdown { position: relative; }
.nav-dropdown-btn { border: 0; background: none; color: inherit; cursor: pointer; font-weight: inherit; padding: 28px 0; display: flex; gap: 6px; align-items: center; }
.chevron { font-size: 13px; transition: transform .2s ease; }
.nav-dropdown:hover .chevron { transform: rotate(180deg); }
.dropdown-panel { position: absolute; top: calc(100% - 8px); left: 50%; transform: translate(-50%, 8px); width: 340px; padding: 10px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transition: .2s ease; }
.dropdown-panel.wide { width: 390px; }
.nav-dropdown:hover .dropdown-panel { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown-panel a { display: block; padding: 12px 14px; border-radius: 10px; }
.dropdown-panel a:hover { background: var(--soft); }
.dropdown-panel strong { display: block; font-size: 14px; margin-bottom: 3px; color: var(--ink); }
.dropdown-panel small { display: block; font-size: 12px; color: var(--muted); line-height: 1.45; }
.header-actions { justify-self: end; }
.lang-switch { display: flex; padding: 3px; background: var(--soft); border: 1px solid var(--line); border-radius: 10px; }
.lang-switch button { border: 0; background: transparent; padding: 6px 9px; border-radius: 7px; color: var(--muted); cursor: pointer; font-size: 12px; }
.lang-switch button.active { color: white; background: var(--ink); }
.mobile-menu-btn { display: none; border: 0; background: transparent; font-size: 25px; cursor: pointer; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 74px 0 0; min-height: 710px; }
.hero::before { content:""; position:absolute; width:680px; height:680px; border-radius:50%; right:-230px; top:-240px; background: radial-gradient(circle, rgba(239,23,23,.13), transparent 68%); pointer-events:none; }
.hero-grid-bg { position:absolute; inset:0; opacity:.24; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size:64px 64px; mask-image:linear-gradient(to bottom, black, transparent 90%); }
.hero-layout { position: relative; z-index: 2; display:grid; grid-template-columns: 1.02fr .98fr; align-items:center; gap: 72px; min-height: 530px; }
.eyebrow { color:#c0cede; font-size:12px; letter-spacing:.14em; font-weight:700; display:flex; align-items:center; gap:10px; margin-bottom:24px; }
.eyebrow-dot { width:7px; height:7px; border-radius:50%; background:var(--brand); box-shadow:0 0 16px var(--brand); }
.hero h1 { max-width: 700px; font-size: clamp(46px, 5.7vw, 73px); line-height: 1.03; letter-spacing: -.045em; color: white; }
.hero-lead { max-width: 690px; margin-top:26px; color:#a9b9ca; font-size:17px; }
.hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:34px; }
.btn { min-height:50px; padding:0 22px; border-radius:11px; display:inline-flex; align-items:center; justify-content:center; font-weight:750; font-size:14px; transition:.24s ease; }
.btn-primary { color:#fff; background:linear-gradient(135deg,var(--brand),#c80909); box-shadow:0 14px 34px rgba(239,23,23,.23); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 18px 38px rgba(239,23,23,.32); }
.btn-ghost { color:#fff; border:1px solid rgba(255,255,255,.16); background:rgba(255,255,255,.035); }
.btn-ghost:hover { background:rgba(255,255,255,.08); }
.hero-protocols { margin-top:40px; display:flex; flex-wrap:wrap; gap:10px; }
.hero-protocols span { font-size:11px; font-weight:750; letter-spacing:.08em; color:#bdc9d6; padding:7px 10px; border:1px solid rgba(255,255,255,.1); border-radius:100px; }
.hero-visual { position:relative; min-height:490px; display:grid; place-items:center; }
.signal-orbit { position:absolute; border-radius:50%; border:1px solid rgba(255,255,255,.09); }
.orbit-1 { width:330px; height:330px; }
.orbit-2 { width:430px; height:430px; border-style:dashed; border-color:rgba(239,23,23,.14); animation:spin 28s linear infinite; }
.orbit-3 { width:520px; height:520px; border-color:rgba(255,255,255,.045); }
@keyframes spin { to { transform: rotate(360deg); } }
.hero-chip { position:relative; width:220px; height:220px; background:linear-gradient(145deg,#18334f,#081421); border:1px solid rgba(255,255,255,.15); border-radius:26px; box-shadow:0 0 90px rgba(239,23,23,.09), inset 0 0 45px rgba(255,255,255,.03); z-index:3; padding:17px; }
.chip-face { width:100%; height:100%; border-radius:18px; border:1px solid rgba(255,255,255,.09); background:radial-gradient(circle at 35% 25%,#153658,#0a1d31 62%,#06111f); display:flex; flex-direction:column; align-items:center; justify-content:center; }
.chip-face img { width:96px; height:84px; object-fit:contain; padding:7px 6px; background:white; border-radius:10px; margin-bottom:10px; }
.chip-face strong { font-size:13px; letter-spacing:.14em; color:white; }
.chip-face small { margin-top:4px; color:#8ca2b9; font-size:9px; letter-spacing:.1em; }
.chip-pins { position:absolute; }
.pins-top,.pins-bottom { left:25px; right:25px; height:16px; background:repeating-linear-gradient(90deg,transparent 0 14px,#75889b 14px 18px,transparent 18px 27px); }
.pins-top { top:-16px; } .pins-bottom { bottom:-16px; }
.pins-left,.pins-right { top:25px; bottom:25px; width:16px; background:repeating-linear-gradient(0deg,transparent 0 14px,#75889b 14px 18px,transparent 18px 27px); }
.pins-left { left:-16px; } .pins-right { right:-16px; }
.network-node { position:absolute; z-index:4; min-width:112px; padding:11px 14px; border-radius:12px; border:1px solid rgba(255,255,255,.13); background:rgba(8,23,39,.82); backdrop-filter:blur(9px); box-shadow:0 12px 28px rgba(0,0,0,.2); }
.network-node b { display:block; font-size:13px; color:white; letter-spacing:.08em; }
.network-node small { display:block; margin-top:2px; color:#8fa5bb; font-size:10px; }
.node-rf { top:76px; right:34px; } .node-dsp { left:28px; top:116px; } .node-radio { right:10px; bottom:86px; } .node-iot { left:44px; bottom:60px; }
.signal-line { position:absolute; height:1px; transform-origin:left center; background:linear-gradient(90deg,rgba(239,23,23,.65),rgba(255,255,255,.04)); z-index:2; }
.line-a { width:160px; transform:rotate(-33deg); left:260px; top:240px; } .line-b { width:150px; transform:rotate(-150deg); left:265px; top:245px; } .line-c { width:155px; transform:rotate(35deg); left:270px; top:265px; } .line-d { width:150px; transform:rotate(148deg); left:250px; top:268px; }
.hero-strip { position:relative; z-index:5; display:grid; grid-template-columns:repeat(3,1fr); margin-top:45px; border-top:1px solid rgba(255,255,255,.09); }
.hero-strip > div { padding:23px 24px 26px 0; border-right:1px solid rgba(255,255,255,.08); }
.hero-strip > div:not(:first-child) { padding-left:28px; }
.hero-strip > div:last-child { border-right:0; }
.hero-strip strong { display:block; color:#fff; font-size:13px; margin-bottom:3px; }
.hero-strip span { color:#8295a9; font-size:12px; }

/* About */
.about-layout { align-items:center; }
.about-copy p { color:var(--ink-2); font-size:17px; margin-bottom:18px; }
.about-tags { display:flex; flex-wrap:wrap; gap:9px; margin-top:28px; }
.about-tags span { padding:7px 10px; border:1px solid var(--line); border-radius:100px; color:#49596b; font-size:12px; font-weight:650; }

/* Product cards */
.product-grid { display:grid; grid-template-columns:1.35fr .825fr .825fr; gap:20px; }
.product-card { min-height:360px; display:flex; flex-direction:column; padding:30px; background:#fff; border:1px solid #e1e5ea; border-radius:20px; transition:.28s ease; box-shadow:0 10px 30px rgba(20,39,62,.03); }
.product-card:hover { transform:translateY(-5px); border-color:#cdd2d9; box-shadow:0 22px 60px rgba(20,39,62,.10); }
.product-top { display:flex; align-items:center; justify-content:space-between; margin-bottom:46px; }
.product-index { color:var(--brand); font-weight:800; font-size:12px; }
.product-type { color:#8a94a2; font-size:10px; letter-spacing:.14em; font-weight:800; }
.product-card h3 { font-size:25px; margin-bottom:12px; letter-spacing:-.02em; }
.product-card p { color:var(--muted); font-size:14px; max-width:450px; }
.chip-list { display:flex; flex-wrap:wrap; gap:8px; margin-top:25px; }
.chip-list span { padding:7px 9px; background:var(--soft); border-radius:7px; font-size:12px; font-family:ui-monospace,SFMono-Regular,Consolas,monospace; font-weight:700; color:#39485a; }
.text-link { margin-top:auto; padding-top:30px; color:var(--brand); font-weight:750; font-size:13px; }

/* Solutions */
.solutions-section { background:linear-gradient(160deg,#07111f 0%,#0b1b2d 62%,#091524 100%); }
.solution-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.solution-card { min-height:330px; padding:32px; border-radius:20px; border:1px solid rgba(255,255,255,.10); background:linear-gradient(145deg,rgba(255,255,255,.045),rgba(255,255,255,.018)); position:relative; overflow:hidden; }
.solution-card::before { content:""; position:absolute; width:190px; height:190px; border-radius:50%; right:-80px; top:-80px; background:radial-gradient(circle,rgba(239,23,23,.10),transparent 70%); }
.solution-card.featured { border-color:rgba(239,23,23,.3); }
.solution-number { color:var(--brand-2); font-size:11px; font-weight:800; letter-spacing:.1em; }
.solution-card h3 { margin-top:50px; color:white; font-size:25px; }
.solution-card p { color:#9eafc0; font-size:14px; margin-top:10px; max-width:530px; }
.solution-tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:26px; }
.solution-tags span { padding:7px 9px; color:#ced9e4; border:1px solid rgba(255,255,255,.1); border-radius:7px; font-size:11px; font-weight:700; }
.solution-flow { display:flex; align-items:center; gap:13px; margin-top:28px; }
.solution-flow > div { flex:1; padding:15px; border-radius:12px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08); }
.solution-flow b { display:block; color:white; font-size:16px; }
.solution-flow small { display:block; color:#92a6b9; margin-top:2px; font-size:11px; }
.solution-flow > span { color:var(--brand-2); font-weight:900; }
.duplex-list { margin-top:25px; display:grid; gap:10px; }
.duplex-list div { display:flex; justify-content:space-between; align-items:center; padding:11px 13px; border-radius:9px; background:rgba(255,255,255,.045); }
.duplex-list b { color:#fff; font-size:13px; } .duplex-list span { color:#9cafc0; font-size:11px; }

/* Technology */
.tech-layout { display:grid; grid-template-columns:.85fr 1.15fr; gap:80px; align-items:center; }
.tech-layout .section-heading { margin:0; }
.tech-cloud { min-height:330px; display:flex; flex-wrap:wrap; align-content:center; justify-content:center; gap:10px; padding:40px; background:radial-gradient(circle at center,#f5f6f8 0%,#fff 72%); border:1px solid var(--line); border-radius:26px; }
.tech-cloud span { padding:10px 14px; background:#fff; border:1px solid #e1e5e9; border-radius:100px; font-size:12px; font-weight:700; color:#3c4a5c; box-shadow:0 6px 18px rgba(20,39,62,.04); }
.tech-cloud span.large { color:var(--brand); font-size:17px; padding:13px 18px; }

/* Applications */
.application-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:14px; }
.application-card { min-height:230px; padding:24px; background:white; border:1px solid #e1e5ea; border-radius:17px; display:flex; flex-direction:column; justify-content:flex-end; transition:.25s ease; }
.application-card:hover { transform:translateY(-4px); box-shadow:0 18px 45px rgba(20,39,62,.08); }
.application-card > span { margin-bottom:auto; color:var(--brand); font-size:11px; font-weight:800; }
.application-card h3 { font-size:18px; line-height:1.35; margin-bottom:8px; }
.application-card p { color:#8a94a2; font-size:11px; }

/* Contact */
.contact-section { padding-top:96px; }
.contact-panel { min-height:285px; border-radius:26px; padding:50px 54px; background:linear-gradient(135deg,#111827,#1c293a); display:grid; grid-template-columns:1fr auto; gap:50px; align-items:center; box-shadow:var(--shadow); }
.contact-panel h2 { color:white; font-size:clamp(32px,4vw,48px); line-height:1.15; letter-spacing:-.03em; }
.contact-panel p { color:#a8b5c4; max-width:730px; margin-top:14px; }
.btn-light { background:white; color:#111827; }
.btn-light:hover { transform:translateY(-2px); }

/* Footer */
.site-footer { margin-top:30px; padding:68px 0 24px; border-top:1px solid var(--line); }
.footer-grid { display:grid; grid-template-columns:1.5fr repeat(3,1fr); gap:44px; }
.footer-brand img { width:132px; height:88px; object-fit:contain; object-position:left center; }
.footer-brand p { margin-top:10px; color:var(--muted); max-width:340px; font-size:13px; }
.footer-grid > div:not(.footer-brand) { display:grid; align-content:start; gap:9px; }
.footer-grid strong { margin-bottom:7px; font-size:13px; }
.footer-grid a { color:var(--muted); font-size:12px; }
.footer-grid a:hover { color:var(--brand); }
.footer-bottom { margin-top:50px; padding-top:22px; border-top:1px solid var(--line); color:#98a2b3; font-size:11px; display:flex; justify-content:space-between; gap:20px; }

.reveal { opacity:0; transform:translateY(20px); transition:opacity .65s ease,transform .65s ease; }
.reveal.visible { opacity:1; transform:none; }

@media (max-width: 1050px) {
  .header-inner { grid-template-columns:150px 1fr auto; }
  .main-nav { gap:18px; font-size:13px; }
  .hero-layout { grid-template-columns:1fr 1fr; gap:30px; }
  .application-grid { grid-template-columns:repeat(3,1fr); }
}

@media (max-width: 860px) {
  .header-inner { grid-template-columns:1fr auto auto; height:72px; }
  .brand img { width:112px; height:48px; }
  .mobile-menu-btn { display:block; order:3; }
  .header-actions { order:2; }
  .main-nav { position:absolute; top:72px; left:0; right:0; display:none; flex-direction:column; align-items:stretch; gap:0; padding:16px 20px 22px; background:white; border-bottom:1px solid var(--line); box-shadow:0 18px 40px rgba(20,39,62,.10); }
  .main-nav.open { display:flex; }
  .main-nav > a, .nav-dropdown-btn { width:100%; padding:12px 0; text-align:left; }
  .nav-dropdown-btn { justify-content:space-between; }
  .dropdown-panel, .dropdown-panel.wide { position:static; width:100%; transform:none; opacity:1; visibility:visible; box-shadow:none; border:0; background:#f7f8fa; display:none; margin:0 0 8px; }
  .nav-dropdown.mobile-open .dropdown-panel { display:block; }
  .nav-dropdown:hover .dropdown-panel { transform:none; }
  .hero { padding-top:58px; }
  .hero-layout { grid-template-columns:1fr; min-height:auto; }
  .hero-copy { padding-top:16px; }
  .hero-visual { min-height:470px; }
  .hero-strip { grid-template-columns:1fr; margin-top:10px; }
  .hero-strip > div, .hero-strip > div:not(:first-child) { padding:18px 0; border-right:0; border-bottom:1px solid rgba(255,255,255,.08); }
  .hero-strip > div:last-child { border-bottom:0; }
  .two-col, .tech-layout { grid-template-columns:1fr; gap:36px; }
  .product-grid { grid-template-columns:1fr; }
  .product-card { min-height:310px; }
  .solution-grid { grid-template-columns:1fr; }
  .application-grid { grid-template-columns:repeat(2,1fr); }
  .contact-panel { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1.4fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column:2 / span 2; }
}

@media (max-width: 560px) {
  .container { width:min(calc(100% - 28px),var(--max)); }
  .section { padding:78px 0; }
  .lang-switch button { padding:5px 7px; }
  .hero h1 { font-size:46px; }
  .hero-lead { font-size:15px; }
  .hero-visual { min-height:390px; transform:scale(.84); margin:-25px -20px; }
  .orbit-3 { display:none; }
  .application-grid { grid-template-columns:1fr; }
  .application-card { min-height:175px; }
  .solution-flow { align-items:stretch; flex-direction:column; }
  .solution-flow > span { transform:rotate(90deg); align-self:center; }
  .contact-panel { padding:36px 28px; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .footer-brand { grid-column:1 / -1; }
  .footer-grid > div:last-child { grid-column:auto; }
  .footer-bottom { flex-direction:column; }
}