:root{
  --bg:#0F1320;--bg2:#141A2C;--bg3:#1A2138;
  --paper:#F4F6F9;
  --ink:#0A0E19;--ink2:#48505F;--ink3:#7B8293;
  --accent:#FF6A1A;--accent2:#FF8A3D;
  --line:#242B40;--line2:#D7DCE4;
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
  --sans:Inter,'Helvetica Neue',Helvetica,Arial,'PingFang SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);background:var(--bg);color:#DCE2EC;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 28px}
.btn{display:inline-block;padding:14px 28px;border-radius:8px;font-weight:600;letter-spacing:.2px;transition:transform .15s,background .2s;border:none;cursor:pointer}
.btn:hover{transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent2)}
.btn-ghost{background:transparent;color:#DCE2EC;border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:#4A5575;background:rgba(255,255,255,.03)}
.btn-dark{background:var(--ink);color:#fff}
.nav{position:sticky;top:0;z-index:10;background:rgba(15,19,32,.94);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:1px;font-size:18px}
.nav-links{display:flex;gap:30px;font-size:14px;color:#B8C0D3}
.nav-links a:hover{color:#fff}
.nav-ctas{display:flex;gap:12px}
.nav-ctas .btn{padding:10px 20px;font-size:14px}
.lang-switch{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:8px;margin-left:18px;flex-shrink:0}
.lang-switch a{padding:6px 10px;font-size:12px;font-weight:600;line-height:1;border-radius:5px;color:#9AA3B8;transition:background .2s,color .2s}
.lang-switch a:hover{color:#fff}
.lang-switch a[aria-current="page"]{background:var(--accent);color:#fff}
@media(max-width:1240px){.nav-ctas .btn-ghost{display:none}}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}
@media(max-width:1080px){
  .nav-links,.nav-ctas{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:70px;right:16px;background:var(--bg2);padding:20px 24px;border-radius:10px;gap:18px;min-width:220px;box-shadow:0 12px 32px rgba(0,0,0,.5)}
  .nav-ctas.open{display:none}
  .lang-switch{margin-left:auto;margin-right:14px}
}
.hero{padding:96px 0 84px;position:relative}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 38%,rgba(255,106,26,.12),transparent 55%)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:999px;font-size:12px;letter-spacing:2px;color:#FFB080;margin-bottom:26px}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:50px;line-height:1.08;letter-spacing:-1px;font-weight:700;margin:0 0 22px;color:#fff}
.hero h1 .hi{color:var(--accent);white-space:nowrap}
.hero p{font-size:16px;color:#B8C0D3;max-width:540px;margin:0 0 34px;line-height:1.7}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-frame{background:linear-gradient(145deg,#182038,#0F1528);border:1px solid var(--line);border-radius:16px;padding:28px 24px 22px;box-shadow:0 28px 56px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.04)}
.hero-products{display:flex;align-items:flex-end;justify-content:center;gap:14px;height:380px}
.hero-products figure{margin:0;flex:1 1 0;min-width:0;max-width:31%;height:100%;display:flex;align-items:flex-end;justify-content:center}
.hero-products img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;filter:drop-shadow(0 12px 22px rgba(0,0,0,.55))}
.hero-caption{display:flex;justify-content:space-between;margin-top:16px;font-size:11px;color:#8B94A8;font-family:var(--mono);letter-spacing:.5px}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero{padding:60px 0 52px}
  .hero h1{font-size:36px}
  .hero-products{height:300px}
}
.section{padding:96px 0}
.section-head{max-width:760px;margin:0 auto 52px;text-align:center}
.section-tag{display:inline-block;font-size:12px;letter-spacing:2px;color:var(--accent);font-family:var(--mono);margin-bottom:14px}
.section-head h2{font-size:38px;line-height:1.15;letter-spacing:-.5px;margin:0 0 16px;color:#fff;font-weight:700}
.section-head p{font-size:16px;color:#9AA3B8;max-width:640px;margin:0 auto;line-height:1.7}
@media(max-width:820px){.section{padding:68px 0}.section-head h2{font-size:28px}}
.tabs{display:flex;gap:4px;padding:4px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;width:fit-content;margin:0 auto 40px}
.tab{padding:12px 28px;border-radius:8px;font-size:14px;font-weight:600;color:#9AA3B8;cursor:pointer;border:none;background:transparent;transition:background .2s,color .2s}
.tab[aria-selected="true"]{background:var(--accent);color:#fff}
.tab:hover:not([aria-selected="true"]){color:#fff}
.tabpanel{display:none}.tabpanel.active{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:860px){.duo{grid-template-columns:1fr}}
.mod-card{background:linear-gradient(145deg,#182038,#0F1528);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.mod-stage{flex:1;min-height:340px;padding:28px;display:flex;align-items:center;justify-content:center;background:radial-gradient(ellipse at center,rgba(255,106,26,.08),transparent 72%)}
.mod-stage img{max-width:100%;max-height:380px;object-fit:contain;filter:drop-shadow(0 12px 24px rgba(0,0,0,.55))}
.mod-stage .ph{color:#7A8398;font-family:var(--mono);font-size:12px;letter-spacing:1px;border:1.5px dashed var(--line);padding:18px 24px;border-radius:10px;background:rgba(0,0,0,.28);text-align:center}
.mod-label{padding:16px 22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}
.mod-label b{font-weight:600;color:#fff;font-size:15px}
.mod-label span{font-size:12px;color:#9AA3B8;font-family:var(--mono)}
.mod-specs{padding:26px 4px 4px}
.mod-specs .sub{font-family:var(--mono);font-size:11px;letter-spacing:1.5px;color:var(--accent);margin-bottom:12px}
.mod-specs h3{font-size:24px;line-height:1.2;margin:0 0 12px;color:#fff;font-weight:700}
.mod-specs p{color:#9AA3B8;margin:0 0 16px;font-size:14px;line-height:1.7}
.spec-list{list-style:none;padding:0;margin:0}
.spec-list li{padding:10px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;font-size:13px}
.spec-list .k{color:#7A8398}
.spec-list .v{color:#DCE2EC;font-weight:500;font-family:var(--mono);font-size:12px;text-align:right}
.storage{background:var(--paper);color:var(--ink)}
.storage .section-head h2{color:var(--ink)}
.storage .section-head p{color:var(--ink2)}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:860px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.prod-grid{grid-template-columns:1fr}}
.prod-card{background:#fff;border:1px solid var(--line2);border-radius:14px;padding:20px;display:flex;flex-direction:column;transition:transform .15s,box-shadow .2s}
.prod-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(20,30,50,.10)}
.prod-thumb{height:150px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.prod-thumb img{max-width:100%;max-height:100%;object-fit:contain}
.prod-card h4{font-size:15px;color:var(--ink);margin:0 0 4px;font-weight:600}
.prod-card .ptype{font-size:11px;font-family:var(--mono);letter-spacing:1px;color:var(--accent);margin-bottom:8px}
.prod-card p{font-size:12.5px;color:var(--ink2);margin:0;line-height:1.6}
.cat-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:40px}
.cat-chip{padding:8px 18px;background:#fff;border:1px solid var(--line2);border-radius:999px;font-size:13px;color:var(--ink2)}
.cat-chip b{color:var(--ink)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:860px){.why-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.why-grid{grid-template-columns:1fr}}
.why-card{padding:26px 22px;background:var(--bg2);border:1px solid var(--line);border-radius:14px}
.why-card .num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:1.5px;margin-bottom:16px}
.why-card h4{font-size:16px;color:#fff;margin:0 0 10px;font-weight:600}
.why-card p{font-size:13.5px;color:#9AA3B8;margin:0;line-height:1.65}
.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:820px){.split{grid-template-columns:1fr}}
.split-card{padding:34px;background:var(--bg2);border:1px solid var(--line);border-radius:16px}
.split-card .tag{display:inline-block;padding:6px 12px;background:rgba(255,106,26,.12);color:var(--accent);font-size:11px;letter-spacing:1.5px;border-radius:6px;font-family:var(--mono);margin-bottom:16px}
.split-card h3{font-size:21px;color:#fff;margin:0 0 12px;font-weight:600}
.split-card>p{color:#9AA3B8;font-size:14px;margin:0 0 20px;line-height:1.7}
.split-card ul{list-style:none;padding:0;margin:0}
.split-card li{padding:7px 0 7px 22px;position:relative;font-size:14px;color:#B8C0D3}
.split-card li::before{content:"";position:absolute;left:0;top:14px;width:6px;height:6px;border-radius:50%;background:var(--accent)}
.faq-wrap{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;text-align:left;background:none;border:none;color:#fff;padding:22px 0;font-size:16px;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-family:inherit}
.faq-q::after{content:"+";font-size:20px;color:var(--accent);transition:transform .2s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s;padding:0;color:#9AA3B8;font-size:14px;line-height:1.7}
.faq-item.open .faq-a{max-height:320px;padding:0 0 22px}
.contact-band{background:linear-gradient(135deg,#FF6A1A,#FF8A3D);padding:64px 0;text-align:center}
.contact-band h3{color:#fff;font-size:28px;margin:0 0 12px;font-weight:700}
.contact-band p{color:rgba(255,255,255,.9);margin:0 0 26px;font-size:15px}
.footer{background:#0A0E19;padding:60px 0 30px;color:#7A8398}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
.footer-grid h4{color:#fff;font-size:14px;margin:0 0 16px}
.footer-grid ul{list-style:none;padding:0;margin:0}
.footer-grid li{margin-bottom:10px;font-size:13px}
.footer-grid li a:hover{color:var(--accent)}
.footer-brand p{font-size:13px;line-height:1.7;margin:14px 0 0}
.footer-logo{display:flex;align-items:center;gap:10px;font-weight:700;color:#fff;letter-spacing:1px}
.footer-bottom{padding-top:26px;border-top:1px solid var(--line);font-size:12px;text-align:center}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s,transform .5s}
.reveal.visible{opacity:1;transform:translateY(0)}
@media print{
  .nav,.contact-band{display:none}
  body{background:#fff;color:#000}
  .section{padding:30px 0;page-break-inside:avoid}
}