:root{
  --bg:#0a1f35;
  --bg2:#0e2a45;
  --panel:#123352;
  --panel2:#163d5f;
  --line:rgba(120,200,240,.22);
  --cyan:#33ddff;
  --cyan2:#7eeaff;
  --white:#f5fbff;
  --muted:#a8c2d6;
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--white);font-family:"Microsoft YaHei","Noto Sans SC",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(10,31,53,.72);backdrop-filter:blur(18px);border-bottom:1px solid rgba(120,210,255,.10)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.04em}
.logo-img{width:40px;height:40px;border-radius:8px;object-fit:cover;box-shadow:0 0 18px rgba(51,221,255,.25);border:1px solid rgba(51,221,255,.3)}
.logo small{display:block;color:var(--muted);font-size:9px;letter-spacing:.22em;font-weight:500}
.nav-links{display:flex;gap:34px;font-size:14px;color:#c6d8e6}
.nav-links a{position:relative;padding:28px 0;transition:color .25s}
.nav-links a:hover,.nav-links a.active{color:var(--white)}
.nav-links a.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.menu{display:none;color:var(--cyan);font-size:26px;cursor:pointer}

/* ===== Hero Slider ===== */
.hero{position:relative;overflow:hidden;min-height:820px;padding-top:78px;background:var(--bg)}
.hero-slider{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1s ease,visibility 1s ease;background-size:cover;background-position:center;background-repeat:no-repeat}
.slide-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.slide.active{opacity:1;visibility:visible}
.slide.active .slide-content>*{opacity:0;animation:slideFadeUp .8s cubic-bezier(.25,.8,.25,1) forwards}
.slide.active .slide-content>*:nth-child(1){animation-delay:.2s}
.slide.active .slide-content>*:nth-child(2){animation-delay:.35s}
.slide.active .slide-content>*:nth-child(3){animation-delay:.5s}
.slide.active .slide-content>*:nth-child(4){animation-delay:.65s}
.slide-overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(10,31,53,.93) 0%,rgba(10,31,53,.78) 42%,rgba(10,31,53,.4) 72%,rgba(10,31,53,.18) 100%)}
.slide-container{position:relative;height:100%;display:flex;align-items:center;z-index:2}
.slide-content{width:55%;position:relative}
.slider-dots{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;gap:14px;z-index:10}
.dot{width:36px;height:3px;background:rgba(255,255,255,.25);cursor:pointer;transition:all .3s;border-radius:2px}
.dot:hover{background:rgba(255,255,255,.5)}
.dot.active{background:var(--cyan);box-shadow:0 0 10px rgba(51,221,255,.6);width:48px}
.eyebrow{font-size:12px;letter-spacing:.25em;color:var(--cyan);text-transform:uppercase;margin-bottom:18px}
h1{font-size:clamp(48px,6vw,82px);line-height:1.08;margin:0 0 20px;font-weight:800;letter-spacing:-.04em}
.hero h1 span{display:block;color:var(--cyan)}
.lead{font-size:18px;color:#c8dae8;max-width:650px}
.actions{display:flex;gap:14px;margin-top:34px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 22px;border:1px solid rgba(109,231,255,.5);font-size:14px;transition:.25s;cursor:pointer;background:transparent;color:var(--white)}
.btn.primary{background:var(--cyan);color:#02111d;border-color:var(--cyan);font-weight:700}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(51,221,255,.18);border-color:var(--cyan)}
.btn.primary:hover{box-shadow:0 10px 30px rgba(51,221,255,.35)}

/* ===== Stats ===== */
.stats{position:relative;z-index:3;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#0c2540}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:28px 20px;border-right:1px solid var(--line);transition:transform .3s,background .3s}
.stat:hover{transform:translateY(-3px);background:rgba(51,221,255,.04)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:32px;color:var(--cyan)}
.stat span{color:var(--muted);font-size:13px}

/* ===== Sections ===== */
.section{padding:105px 0}
.section.dark{background:#0c2540}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:48px}
.section-kicker{font-size:12px;letter-spacing:.22em;color:var(--cyan);text-transform:uppercase}
.section h2{font-size:42px;line-height:1.2;margin:8px 0 0}
.section-intro{max-width:600px;color:var(--muted);margin:0}

/* ===== Tech Cards ===== */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:linear-gradient(145deg,rgba(18,51,82,.95),rgba(10,31,53,.95));border:1px solid var(--line);padding:28px;min-height:250px;position:relative;overflow:hidden;transition:.35s cubic-bezier(.25,.8,.25,1)}
.card:hover{transform:translateY(-8px);border-color:rgba(51,221,255,.55);box-shadow:0 22px 55px rgba(0,0,0,.28),0 0 30px rgba(51,221,255,.08)}
.card:after{content:"";position:absolute;width:100px;height:100px;border-radius:50%;right:-50px;top:-50px;background:rgba(51,221,255,.07);transition:transform .4s}
.card:hover:after{transform:scale(1.4)}
.icon{width:46px;height:46px;border:1px solid rgba(51,221,255,.5);display:grid;place-items:center;color:var(--cyan);margin-bottom:24px;transition:all .3s}
.card:hover .icon{background:rgba(51,221,255,.1);box-shadow:0 0 16px rgba(51,221,255,.2)}
.card h3{margin:0 0 8px;font-size:20px}
.card p{color:var(--muted);font-size:14px;margin:0}
.tag{display:inline-block;margin-top:18px;color:var(--cyan);font-size:11px;letter-spacing:.12em}

/* ===== Product Cards ===== */
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.product-card{padding:34px;background:linear-gradient(145deg,#0f2d4a,#0a1f35);border:1px solid var(--line);position:relative;transition:.35s cubic-bezier(.25,.8,.25,1);overflow:hidden}
.product-card:before{content:"";position:absolute;top:0;left:0;width:0;height:2px;background:var(--cyan);transition:width .4s;box-shadow:0 0 12px var(--cyan)}
.product-card:hover:before{width:100%}
.product-card:hover{transform:translateY(-6px);border-color:rgba(51,221,255,.45);box-shadow:0 20px 50px rgba(0,0,0,.25)}
.product-card .num{position:absolute;right:24px;top:20px;color:rgba(109,231,255,.28);font-size:40px;font-weight:800;transition:color .3s}
.product-card:hover .num{color:rgba(109,231,255,.5)}
.product-card h3{font-size:27px;margin:0 0 8px}
.product-card .desc{color:var(--muted)}
.spec-table{width:100%;border-collapse:collapse;margin-top:22px;font-size:13px}
.spec-table td,.spec-table th{padding:9px 8px;border-bottom:1px solid rgba(130,190,220,.14);text-align:left;vertical-align:top}
.spec-table th{color:var(--muted);font-weight:500;width:42%}

/* ===== Application Cards (with images) ===== */
.app-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.app{position:relative;overflow:hidden;border:1px solid var(--line);background:linear-gradient(145deg,#0f2d4a,#0a1f35);transition:.35s cubic-bezier(.25,.8,.25,1);display:flex;flex-direction:column}
.app:hover{transform:translateY(-8px);border-color:rgba(51,221,255,.5);box-shadow:0 24px 60px rgba(0,0,0,.3),0 0 35px rgba(51,221,255,.1)}
.app-img{width:100%;height:220px;overflow:hidden;position:relative;flex-shrink:0}
.app-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.25,.8,.25,1);display:block}
.app:hover .app-img img{transform:scale(1.08)}
.app-img:after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,transparent 50%,rgba(10,31,53,.85));pointer-events:none}
.app-body{padding:28px 30px 30px;flex:1;display:flex;flex-direction:column}
.app h3{font-size:24px;margin:0 0 6px}
.app .domain{color:var(--cyan);font-size:13px;margin-bottom:14px;letter-spacing:.04em}
.app p{color:#b8cdda;margin:0;flex:1}

/* ===== Timeline ===== */
.timeline{position:relative;border-left:1px solid rgba(51,221,255,.38);margin-left:18px}
.event{position:relative;padding:0 0 38px 34px;transition:transform .3s}
.event:hover{transform:translateX(6px)}
.event:before{content:"";position:absolute;width:9px;height:9px;border:2px solid var(--cyan);background:var(--bg);border-radius:50%;left:-6px;top:8px;box-shadow:0 0 14px rgba(51,221,255,.45);transition:box-shadow .3s}
.event:hover:before{box-shadow:0 0 22px rgba(51,221,255,.7)}
.event .year{color:var(--cyan);font-size:14px;font-weight:700}
.event h3{margin:3px 0 5px;font-size:20px}
.event p{margin:0;color:var(--muted)}

/* ===== About ===== */
.about-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}
.about-copy p{color:#c0d3e2;font-size:16px}
.about-box{padding:35px;border:1px solid var(--line);background:linear-gradient(145deg,#0f2d4a,#0a1f35);transition:.35s}
.about-box:hover{transform:translateY(-5px);box-shadow:0 18px 45px rgba(0,0,0,.25);border-color:rgba(51,221,255,.4)}
.about-box strong{font-size:48px;color:var(--cyan);display:block}
.about-box span{color:var(--muted)}

/* ===== Careers / Jobs ===== */
.job-category{margin:38px 0 16px}
.job-category:first-of-type{margin-top:8px}
.jobs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.job{border:1px solid var(--line);background:linear-gradient(145deg,#0f2d4a,#0a1f35);padding:20px;display:flex;justify-content:space-between;gap:20px;transition:.3s;align-items:center}
.job:hover{transform:translateX(6px);border-color:rgba(51,221,255,.45);box-shadow:0 8px 25px rgba(0,0,0,.2)}
.job b{font-size:16px}
.job small{display:block;color:var(--muted);margin-top:4px}
.job .city{color:var(--cyan);white-space:nowrap;font-size:12px}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:55px}
.benefit{padding:22px;border:1px solid var(--line);background:linear-gradient(145deg,#0f2d4a,#0a1f35);transition:.3s}
.benefit:hover{transform:translateY(-5px);border-color:rgba(51,221,255,.4);box-shadow:0 14px 35px rgba(0,0,0,.2)}
.benefit b{display:block;margin-bottom:5px}
.benefit span{color:var(--muted);font-size:13px}

/* ===== Contact Cards ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.contact-card{padding:30px;border:1px solid var(--line);background:linear-gradient(145deg,#0f2d4a,#0a1f35);transition:.3s}
.contact-card:hover{transform:translateY(-4px);border-color:rgba(51,221,255,.4);box-shadow:0 14px 35px rgba(0,0,0,.2)}
.contact-card span{color:var(--muted);font-size:12px;letter-spacing:.15em}
.contact-card strong{display:block;margin-top:7px;font-size:18px}

/* ===== Footer ===== */
.footer{border-top:1px solid var(--line);padding:38px 0;color:#7e98ad;font-size:12px}
.footer-inner{display:flex;justify-content:space-between;gap:20px}

/* ===== Page Hero ===== */
.page-hero{padding:170px 0 85px;background:radial-gradient(circle at 75% 30%,rgba(51,221,255,.12),transparent 30%),#0a1f35;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:58px}
.page-hero p{color:var(--muted);max-width:700px}

/* ===== Scroll Reveal Animation ===== */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s cubic-bezier(.25,.8,.25,1),transform .8s cubic-bezier(.25,.8,.25,1)}
.reveal.active{opacity:1;transform:translateY(0)}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}
.reveal-delay-4{transition-delay:.4s}

/* ===== Radar Wave Animation ===== */
.radar-waves{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:1}
.wave{position:absolute;left:var(--wave-x,50%);top:var(--wave-y,50%);width:var(--wave-size,200px);height:var(--wave-size,200px);border:2px solid rgba(51,221,255,.5);border-radius:50%;transform:translate(-50%,-50%) scale(0);animation:waveExpand var(--wave-duration,3s) ease-out infinite;opacity:0}
.wave:nth-child(2){animation-delay:calc(var(--wave-duration,3s) / 3)}
.wave:nth-child(3){animation-delay:calc(var(--wave-duration,3s) * 2 / 3)}
.app-img .radar-waves{--wave-size:160px;--wave-duration:2.8s}
.slide .radar-waves{--wave-size:380px;--wave-duration:4s;z-index:1}
.slide .radar-waves .wave{border-color:rgba(51,221,255,.35)}

/* ===== Keyframes ===== */
@keyframes slideFadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes waveExpand{
  0%{transform:translate(-50%,-50%) scale(0.1);opacity:.75;border-width:3px}
  60%{opacity:.35}
  100%{transform:translate(-50%,-50%) scale(3.2);opacity:0;border-width:1px}
}

/* ===== Responsive ===== */
@media(max-width:900px){
 .nav-links{display:none}.menu{display:block}
 .hero{min-height:700px}
 .slide-content{width:100%}
 .slide-overlay{background:linear-gradient(to right,rgba(10,31,53,.88) 0%,rgba(10,31,53,.72) 50%,rgba(10,31,53,.5) 100%)}
 .slider-dots{bottom:24px;gap:10px}
 .dot{width:28px}
 .dot.active{width:36px}
 .cards{grid-template-columns:repeat(2,1fr)}
 .product-grid,.app-grid,.about-layout,.contact-grid{grid-template-columns:1fr}
 .stats-grid{grid-template-columns:repeat(2,1fr)}
 .section-head{display:block}
 .section-intro{margin-top:18px}
 .benefits{grid-template-columns:1fr 1fr}
 .jobs{grid-template-columns:1fr}
 .app-img{height:200px}
}
@media(max-width:560px){
 .container{width:min(100% - 30px,var(--max))}
 .nav{height:66px}
 .hero{padding-top:66px;min-height:620px}
 .hero h1{font-size:40px}
 .lead{font-size:14px}
 .slider-dots{bottom:20px;gap:8px}
 .dot{width:22px;height:2px}
 .dot.active{width:30px}
 .cards,.stats-grid,.benefits{grid-template-columns:1fr}
 .stat{border-right:0;border-bottom:1px solid var(--line)}
 .page-hero{padding:130px 0 65px}
 .page-hero h1{font-size:43px}
 .section{padding:75px 0}
 .section h2{font-size:34px}
 .footer-inner{display:block}
 .footer-inner div+div{margin-top:8px}
 .jobs{grid-template-columns:1fr}
 .app-img{height:180px}
}