/* ═══════════════════════ VSSTEC — 科技风官网 ═══════════════════════ */
:root{
  --bg:#04070f;
  --bg2:#060c1a;
  --panel:rgba(255,255,255,.035);
  --panel-brd:rgba(120,180,255,.14);
  --txt:#e9effc;
  --muted:#8fa1c0;
  --cyan:#00d8ff;
  --blue:#3b82f6;
  --grad:linear-gradient(92deg,#00d8ff 0%,#3b82f6 60%,#7c6bff 100%);
  --radius:16px;
  --font-zh:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-en:"Rajdhani","Noto Sans SC",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--txt);font-family:var(--font-zh);
  line-height:1.7;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(0,216,255,.3)}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{font-family:inherit;cursor:pointer}
svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* 滚动条 */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(#0e2a4a,#123a66);border-radius:6px}

/* 品牌 Logo（参考官网原版） */
.brand-logo{
  height:52px;width:auto;display:block;
  background:#fff;border-radius:12px;padding:6px 16px;
  box-shadow:0 4px 18px rgba(0,60,160,.35);
  transition:transform .3s,box-shadow .3s;
}
.brand:hover .brand-logo{transform:translateY(-2px);box-shadow:0 8px 26px rgba(0,90,220,.45)}
.brand-logo-sm{height:44px;padding:5px 13px}

.container{width:min(1280px,92%);margin:0 auto}

/* ═══════ 导航 ═══════ */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s,box-shadow .4s,backdrop-filter .4s;
}
.nav.scrolled{
  background:rgba(4,8,18,.82);backdrop-filter:blur(18px);
  box-shadow:0 1px 0 rgba(120,180,255,.12),0 12px 40px rgba(0,0,0,.45);
}
.nav-inner{width:min(1360px,94%);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  font-family:var(--font-en);font-weight:700;font-size:24px;color:#04101f;
  background:var(--grad);box-shadow:0 0 24px rgba(0,216,255,.45);
}
.brand-text{font-family:var(--font-en);font-weight:700;font-size:21px;letter-spacing:2px;line-height:1.1;display:flex;flex-direction:column}
.brand-text em{font-style:normal;font-family:var(--font-zh);font-weight:400;font-size:11px;letter-spacing:5px;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  padding:9px 16px;font-size:15px;color:var(--muted);border-radius:9px;
  transition:color .25s,background .25s;position:relative;
}
.nav-links a:hover{color:var(--txt)}
.nav-links a.active{color:var(--cyan)}
.nav-links a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-cta{
  margin-left:10px;color:#04101f!important;font-weight:600;
  background:var(--grad);box-shadow:0 4px 18px rgba(0,180,255,.35);
}
.nav-cta::after{display:none}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 26px rgba(0,180,255,.5)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--txt);border-radius:2px;transition:.3s}

/* ═══════ HERO ═══════ */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background:url("../assets/img/hero-bg.jpg") center/cover no-repeat;
  opacity:.5;transform:scale(1.06);
  animation:heroZoom 22s ease-in-out infinite alternate;
}
@keyframes heroZoom{from{transform:scale(1.06)}to{transform:scale(1.14)}}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse 90% 70% at 50% 40%,rgba(4,7,15,.1) 0%,rgba(4,7,15,.88) 78%),
             linear-gradient(180deg,rgba(4,7,15,.55),rgba(4,7,15,.25) 45%,var(--bg) 98%);
}
#particles{position:absolute;inset:0;width:100%;height:100%}
.hero-grid-overlay{
  position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(80,150,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(80,150,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 45%,#000 30%,transparent 75%);
}
.hero-content{position:relative;z-index:2;width:min(1280px,92%);margin:0 auto;padding:130px 0 90px;text-align:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 20px;border:1px solid var(--panel-brd);border-radius:999px;
  background:rgba(10,20,40,.5);backdrop-filter:blur(8px);
  font-size:13.5px;letter-spacing:3px;color:#9fc6ff;
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.35}}
.hero h1{
  margin:34px 0 22px;font-size:clamp(44px,7.2vw,92px);font-weight:900;
  line-height:1.14;letter-spacing:4px;
  text-shadow:0 0 60px rgba(0,150,255,.35);
}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(15px,1.5vw,18.5px);color:#b9c8e4;font-weight:300;letter-spacing:1px}
.hero-actions{margin-top:44px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 34px;border-radius:12px;font-size:16px;font-weight:600;letter-spacing:1px;
  border:1px solid transparent;transition:transform .25s,box-shadow .25s,background .25s;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);color:#04101f;box-shadow:0 6px 28px rgba(0,190,255,.4)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 38px rgba(0,190,255,.55)}
.btn-ghost{border-color:rgba(140,190,255,.35);color:var(--txt);background:rgba(255,255,255,.04);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(120,180,255,.12);transform:translateY(-3px)}
.btn-block{width:100%;justify-content:center;border:0}

.hero-stats{
  margin:74px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:960px;
}
.stat{
  padding:26px 12px;border:1px solid var(--panel-brd);border-radius:var(--radius);
  background:rgba(10,18,36,.45);backdrop-filter:blur(10px);
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.stat:hover{transform:translateY(-5px);border-color:rgba(0,216,255,.4);box-shadow:0 14px 40px rgba(0,120,255,.18)}
.stat b{font-family:var(--font-en);font-size:44px;font-weight:700;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-family:var(--font-en);font-size:22px;color:var(--cyan);margin-left:2px}
.stat p{margin-top:4px;font-size:13.5px;color:var(--muted);letter-spacing:1px}
.hero-scroll{position:absolute;left:50%;bottom:28px;transform:translateX(-50%);z-index:2}
.hero-scroll span{
  display:block;width:24px;height:40px;border:2px solid rgba(150,200,255,.4);border-radius:14px;position:relative;
}
.hero-scroll span::after{
  content:"";position:absolute;left:50%;top:7px;width:4px;height:8px;margin-left:-2px;border-radius:4px;
  background:var(--cyan);animation:scrollDot 1.8s infinite;
}
@keyframes scrollDot{0%{transform:translateY(0);opacity:1}80%{transform:translateY(14px);opacity:0}100%{opacity:0}}

/* ═══════ 跑马灯 ═══════ */
.marquee{
  border-top:1px solid var(--panel-brd);border-bottom:1px solid var(--panel-brd);
  background:rgba(8,14,28,.6);overflow:hidden;padding:18px 0;position:relative;
}
.marquee::before,.marquee::after{
  content:"";position:absolute;top:0;bottom:0;width:140px;z-index:2;pointer-events:none;
}
.marquee::before{left:0;background:linear-gradient(90deg,var(--bg),transparent)}
.marquee::after{right:0;background:linear-gradient(-90deg,var(--bg),transparent)}
.marquee-track{display:flex;gap:34px;width:max-content;animation:marquee 30s linear infinite;align-items:center}
.marquee-track span{font-size:16px;letter-spacing:4px;color:#a9bcdf;white-space:nowrap;font-weight:500}
.marquee-track i{color:var(--cyan);font-size:9px;font-style:normal}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ═══════ 通用 Section ═══════ */
.section{padding:110px 0;position:relative}
.section-alt{
  background:
    radial-gradient(ellipse 60% 40% at 80% 0%,rgba(30,80,180,.12),transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 100%,rgba(0,150,220,.08),transparent 60%),
    var(--bg2);
}
.sec-head{text-align:center;max-width:760px;margin:0 auto 64px}
.sec-tag{
  display:inline-block;font-family:var(--font-en);font-size:13px;font-weight:600;letter-spacing:5px;
  color:var(--cyan);padding:6px 18px;border:1px solid rgba(0,216,255,.3);border-radius:999px;margin-bottom:20px;
  background:rgba(0,216,255,.06);
}
.sec-head h2{font-size:clamp(30px,3.6vw,44px);font-weight:900;letter-spacing:3px}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px}

/* ═══════ 产品中心 ═══════ */
.product-feature{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;border:1px solid var(--panel-brd);
  border-radius:22px;overflow:hidden;background:var(--panel);margin-bottom:56px;
  box-shadow:0 30px 80px rgba(0,0,0,.4);
}
.pf-media{position:relative;min-height:380px}
.pf-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s}
.product-feature:hover .pf-media img{transform:scale(1.05)}
.pf-badge{
  position:absolute;top:20px;left:20px;padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--grad);color:#04101f;box-shadow:0 6px 20px rgba(0,190,255,.4);
}
.pf-body{padding:52px 48px}
.pf-index{font-family:var(--font-en);letter-spacing:3px;color:var(--cyan);font-size:14px;font-weight:600}
.pf-body h3{font-size:32px;font-weight:900;margin:12px 0 16px;letter-spacing:2px}
.pf-body>p{color:#b9c8e4;font-size:15.5px}
.pf-specs{list-style:none;display:flex;gap:14px;margin:28px 0}
.pf-specs li{
  flex:1;padding:16px 10px;text-align:center;border:1px solid var(--panel-brd);border-radius:12px;
  background:rgba(8,16,32,.5);font-size:12.5px;color:var(--muted);
}
.pf-specs b{display:block;font-family:var(--font-en);font-size:24px;color:var(--cyan);margin-bottom:2px}
.pf-tags{display:flex;flex-wrap:wrap;gap:9px}
.pf-tags span{
  font-size:13px;padding:6px 14px;border-radius:999px;color:#a9c6f5;
  border:1px solid rgba(120,180,255,.22);background:rgba(70,130,255,.07);
}

.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.pcard{
  padding:30px 24px;border:1px solid var(--panel-brd);border-radius:var(--radius);
  background:var(--panel);transition:transform .35s,border-color .35s,box-shadow .35s,background .35s;
  position:relative;overflow:hidden;
}
.pcard::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .4s;
}
.pcard:hover{transform:translateY(-7px);border-color:rgba(0,216,255,.4);box-shadow:0 20px 50px rgba(0,80,200,.22);background:rgba(20,36,66,.5)}
.pcard:hover::before{transform:scaleX(1)}
.pcard-icon{
  width:54px;height:54px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:rgba(0,180,255,.09);border:1px solid rgba(0,216,255,.22);color:var(--cyan);
  transition:transform .35s,box-shadow .35s;
}
.pcard:hover .pcard-icon{transform:scale(1.08) rotate(-4deg);box-shadow:0 0 26px rgba(0,216,255,.3)}
.pcard-icon svg{width:28px;height:28px;stroke-width:1.7}
.pcard h4{font-size:17.5px;font-weight:700;letter-spacing:.5px;margin-bottom:9px}
.pcard p{font-size:13.5px;color:var(--muted);line-height:1.75}
.pcard-more{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--cyan);letter-spacing:1px;
  opacity:0;transform:translateX(-6px);transition:opacity .3s,transform .3s;
}
.pcard:hover .pcard-more{opacity:1;transform:none}
.pf-more{margin-top:28px}

/* 卡片顶部产品图 */
.pcard-img{
  margin:-30px -24px 18px;height:150px;overflow:hidden;
  border-radius:15px 15px 0 0;border-bottom:1px solid var(--panel-brd);
}
.pcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.pcard:hover .pcard-img img{transform:scale(1.07)}

/* ═══════ 主推产品轮播 ═══════ */
.pf-carousel{position:relative;margin-bottom:56px}
.pf-carousel .product-feature{margin-bottom:0}
.pf-slide{display:none}
.pf-slide.active{display:grid;animation:pfFade .6s cubic-bezier(.2,.8,.25,1)}
@keyframes pfFade{from{opacity:0;transform:translateX(36px)}to{opacity:1;transform:none}}
.pf-arrow{
  position:absolute;top:40%;transform:translateY(-50%);z-index:6;
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--panel-brd);background:rgba(6,12,26,.72);color:var(--txt);
  backdrop-filter:blur(8px);transition:all .3s;
}
.pf-arrow svg{width:20px;height:20px}
.pf-arrow:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 22px rgba(0,216,255,.3)}
.pf-prev{left:-16px}
.pf-next{right:-16px}
.pf-dots{display:flex;gap:10px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.pf-dot{
  display:flex;align-items:center;gap:9px;padding:10px 20px;border-radius:999px;
  border:1px solid var(--panel-brd);background:var(--panel);color:var(--muted);
  font-size:13.5px;font-weight:500;letter-spacing:1px;transition:all .3s;
}
.pf-dot span{font-family:var(--font-en);font-weight:700;color:#56719c;transition:color .3s}
.pf-dot:hover{color:var(--txt);border-color:rgba(0,216,255,.3)}
.pf-dot.active{
  color:var(--txt);border-color:rgba(0,216,255,.55);
  background:linear-gradient(120deg,rgba(0,180,255,.16),rgba(60,90,255,.1));
  box-shadow:0 8px 24px rgba(0,100,220,.22);
}
.pf-dot.active span{color:var(--cyan)}

/* ═══════ 解决方案 ═══════ */
.sol-wrap{display:grid;grid-template-columns:330px 1fr;gap:26px;align-items:start}
.sol-tabs{display:flex;flex-direction:column;gap:10px;position:sticky;top:100px}
.sol-tab{
  display:flex;align-items:center;gap:14px;text-align:left;
  padding:17px 18px;border-radius:13px;border:1px solid var(--panel-brd);
  background:var(--panel);color:var(--muted);font-size:14.5px;font-weight:500;line-height:1.5;
  transition:all .3s;
}
.sol-tab span{font-family:var(--font-en);font-weight:700;font-size:15px;color:#56719c;transition:color .3s}
.sol-tab:hover{color:var(--txt);border-color:rgba(0,216,255,.3)}
.sol-tab.active{
  background:linear-gradient(120deg,rgba(0,180,255,.16),rgba(60,90,255,.1));
  border-color:rgba(0,216,255,.5);color:var(--txt);
  box-shadow:0 10px 30px rgba(0,100,220,.2);transform:translateX(6px);
}
.sol-tab.active span{color:var(--cyan)}

.sol-panels{position:relative;min-height:640px}
.sol-panel{
  display:none;grid-template-columns:1fr 1.1fr;gap:0;
  border:1px solid var(--panel-brd);border-radius:22px;overflow:hidden;
  background:var(--panel);box-shadow:0 30px 80px rgba(0,0,0,.4);
}
.sol-panel.active{display:grid;animation:panelIn .55s cubic-bezier(.2,.8,.25,1)}
@keyframes panelIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.sol-media{position:relative;min-height:480px}
.sol-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.sol-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 60%,rgba(6,11,24,.55))}
.sol-media-tag{
  position:absolute;left:20px;bottom:20px;z-index:2;
  font-family:var(--font-en);font-size:12.5px;font-weight:600;letter-spacing:3px;color:#9fd8ff;
  padding:7px 15px;border-radius:999px;border:1px solid rgba(0,216,255,.35);
  background:rgba(4,10,22,.65);backdrop-filter:blur(8px);
}
.sol-info{padding:44px 42px}
.sol-info h3{font-size:24px;font-weight:900;letter-spacing:1px;line-height:1.45;margin-bottom:14px}
.sol-pain{
  font-size:14.5px;color:#a8d8ff;padding:14px 18px;border-left:3px solid var(--cyan);
  background:rgba(0,180,255,.07);border-radius:0 10px 10px 0;margin-bottom:24px;
}
.sol-block{margin-bottom:18px}
.sol-block h5{
  font-size:12.5px;letter-spacing:3px;color:var(--cyan);font-weight:600;margin-bottom:8px;
  display:flex;align-items:center;gap:8px;
}
.sol-block h5::before{content:"";width:14px;height:1.5px;background:var(--cyan)}
.sol-block p{font-size:14.5px;color:#c4d2ec}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{
  font-size:13px;padding:6px 13px;border-radius:8px;color:#cfe6ff;
  background:rgba(0,160,255,.1);border:1px solid rgba(0,200,255,.25);
}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.flow span{
  font-size:12.5px;padding:6px 11px;border-radius:8px;color:#dce9ff;white-space:nowrap;
  background:rgba(70,120,255,.12);border:1px solid rgba(120,170,255,.28);
}
.flow span:not(:first-child)::before{
  content:"→";color:var(--cyan);margin-right:7px;font-weight:700;
}
.sol-apps{margin-top:22px;padding-top:18px;border-top:1px dashed rgba(120,170,255,.22);font-size:13.5px;color:var(--muted)}

/* ═══════ 核心实力 ═══════ */
.strength-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.stcard{
  position:relative;padding:46px 34px 40px;border:1px solid var(--panel-brd);border-radius:20px;
  background:var(--panel);overflow:hidden;transition:transform .35s,border-color .35s,box-shadow .35s;
}
.stcard::after{
  content:"";position:absolute;inset:auto -30% -55% -30%;height:70%;
  background:radial-gradient(ellipse at center,rgba(0,160,255,.16),transparent 65%);
  opacity:0;transition:opacity .4s;
}
.stcard:hover{transform:translateY(-8px);border-color:rgba(0,216,255,.45);box-shadow:0 26px 60px rgba(0,90,220,.25)}
.stcard:hover::after{opacity:1}
.st-num{
  position:absolute;top:22px;right:26px;font-family:var(--font-en);font-size:52px;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(110,170,255,.3);
}
.st-icon{
  width:62px;height:62px;border-radius:16px;display:grid;place-items:center;margin-bottom:24px;
  background:linear-gradient(135deg,rgba(0,216,255,.16),rgba(70,110,255,.1));
  border:1px solid rgba(0,216,255,.3);color:var(--cyan);
}
.st-icon svg{width:30px;height:30px;stroke-width:1.7}
.stcard h3{font-size:22px;font-weight:800;letter-spacing:2px;margin-bottom:14px}
.stcard p{font-size:14.5px;color:var(--muted);line-height:1.9}
.stcard b{color:var(--cyan);font-family:var(--font-en);font-size:17px}

/* ═══════ 关于我们 ═══════ */
.about-wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:center}
.about-media{position:relative}
.about-media>img{
  border-radius:22px;border:1px solid var(--panel-brd);
  box-shadow:0 40px 90px rgba(0,0,0,.5);
}
.about-video{
  position:absolute;right:-24px;bottom:-30px;width:56%;border-radius:16px;overflow:hidden;
  border:1px solid rgba(0,216,255,.35);box-shadow:0 24px 60px rgba(0,60,160,.45);cursor:pointer;
  transition:transform .35s;
}
.about-video:hover{transform:scale(1.04)}
.about-video img{width:100%}
.about-video span{
  position:absolute;left:12px;bottom:10px;font-size:12px;letter-spacing:2px;color:#cfe8ff;
  text-shadow:0 2px 8px #000;
}
.play-btn{
  position:absolute;inset:0;margin:auto;width:58px;height:58px;border-radius:50%;
  display:grid;place-items:center;background:rgba(0,216,255,.92);color:#04101f;
  box-shadow:0 0 0 0 rgba(0,216,255,.5);animation:playPulse 2.2s infinite;
}
.play-btn svg{width:26px;height:26px;fill:currentColor;stroke:none;margin-left:3px}
@keyframes playPulse{70%{box-shadow:0 0 0 20px rgba(0,216,255,0)}100%{box-shadow:0 0 0 0 rgba(0,216,255,0)}}
.about-body h2{font-size:clamp(30px,3.4vw,42px);font-weight:900;letter-spacing:3px;margin:16px 0 22px}
.about-body>p{color:#b9c8e4;font-size:15.5px;margin-bottom:16px}
.about-motto{display:flex;gap:18px;margin:30px 0 26px;align-items:stretch}
.motto-line{width:4px;border-radius:4px;background:var(--grad);box-shadow:0 0 18px rgba(0,216,255,.5)}
.about-motto b{display:block;font-size:21px;letter-spacing:3px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:6px}
.about-motto span{font-size:13.5px;color:var(--muted)}
.about-fields{display:flex;flex-wrap:wrap;gap:10px}
.about-fields span{
  padding:9px 20px;border-radius:999px;font-size:14px;letter-spacing:1px;color:#bcd6ff;
  border:1px solid rgba(120,180,255,.3);background:rgba(60,110,255,.08);
}

/* ═══════ 新闻 ═══════ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ncard{
  border:1px solid var(--panel-brd);border-radius:18px;overflow:hidden;background:var(--panel);
  transition:transform .35s,border-color .35s,box-shadow .35s;display:block;
}
.ncard:hover{transform:translateY(-8px);border-color:rgba(0,216,255,.4);box-shadow:0 24px 56px rgba(0,90,220,.22)}
.ncard-media{position:relative;height:210px;overflow:hidden}
.ncard-media img{width:100%;height:100%;object-fit:cover;transition:transform .7s}
.ncard:hover .ncard-media img{transform:scale(1.08)}
.ncard-tag{
  position:absolute;top:14px;left:14px;padding:5px 13px;border-radius:999px;font-size:12px;
  background:rgba(4,10,22,.7);border:1px solid rgba(0,216,255,.4);color:#9fd8ff;backdrop-filter:blur(6px);
}
.ncard-body{padding:24px 24px 26px}
.ncard-body h4{font-size:17px;font-weight:700;line-height:1.55;margin-bottom:10px;transition:color .3s}
.ncard:hover .ncard-body h4{color:var(--cyan)}
.ncard-body p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:14px}
.ncard-more{font-size:13.5px;color:var(--cyan);letter-spacing:1px}

/* ═══════ 联系我们 ═══════ */
.contact-wrap{display:grid;grid-template-columns:1fr 1.15fr;gap:26px;align-items:stretch}
.contact-info{
  padding:42px 38px;border:1px solid var(--panel-brd);border-radius:20px;background:var(--panel);
  display:flex;flex-direction:column;gap:30px;
}
.citem{display:flex;gap:18px}
.citem-icon{
  flex:none;width:50px;height:50px;border-radius:13px;display:grid;place-items:center;
  background:rgba(0,180,255,.1);border:1px solid rgba(0,216,255,.28);color:var(--cyan);
}
.citem-icon svg{width:24px;height:24px;stroke-width:1.8}
.citem h5{font-size:16px;letter-spacing:2px;margin-bottom:6px}
.citem p{font-size:14px;color:var(--muted);line-height:1.9}
.contact-note{
  margin-top:auto;padding:16px 18px;border-radius:12px;font-size:13.5px;color:#a8d8ff;
  background:rgba(0,160,255,.07);border:1px dashed rgba(0,200,255,.3);
}
.contact-form{
  padding:42px 38px;border:1px solid var(--panel-brd);border-radius:20px;
  background:linear-gradient(160deg,rgba(14,26,52,.6),rgba(8,14,30,.5));
  display:flex;flex-direction:column;gap:16px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%;padding:15px 18px;border-radius:11px;font-size:15px;font-family:inherit;
  background:rgba(6,12,26,.7);border:1px solid rgba(120,170,255,.2);color:var(--txt);
  outline:none;transition:border-color .3s,box-shadow .3s;resize:vertical;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,216,255,.14);
}
.contact-form ::placeholder{color:#5f7398}
.contact-form select{appearance:none}
.form-tip{font-size:14px;color:#4ade80;text-align:center;min-height:20px}

/* ═══════ 页脚 ═══════ */
.footer{border-top:1px solid var(--panel-brd);background:#030509;padding:46px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand b{font-size:17px;letter-spacing:2px}
.footer-brand p{font-size:12.5px;color:var(--muted)}
.footer-links{display:flex;gap:22px;flex-wrap:wrap}
.footer-links a{font-size:14px;color:var(--muted);transition:color .25s}
.footer-links a:hover{color:var(--cyan)}
.footer-copy{width:100%;text-align:center;font-size:12.5px;color:#4c5f82;padding-top:22px;border-top:1px solid rgba(120,170,255,.08)}

/* ═══════ 视频弹窗 ═══════ */
.video-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center}
.video-modal.open{display:flex}
.video-modal-mask{position:absolute;inset:0;background:rgba(2,4,10,.88);backdrop-filter:blur(8px)}
.video-modal-box{position:relative;width:min(960px,92%);z-index:2}
.video-modal-box video{width:100%;border-radius:16px;border:1px solid var(--panel-brd);box-shadow:0 40px 100px rgba(0,0,0,.7)}
.video-close{
  position:absolute;top:-46px;right:0;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--panel-brd);background:rgba(255,255,255,.06);color:var(--txt);font-size:15px;
}

/* ═══════ 滚动显现 ═══════ */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s cubic-bezier(.2,.7,.3,1),transform .8s cubic-bezier(.2,.7,.3,1)}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.45s}
.reveal.in{opacity:1;transform:none}

/* ═══════ 响应式 ═══════ */
@media(max-width:1100px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .sol-wrap{grid-template-columns:1fr}
  .sol-tabs{position:static;flex-direction:row;overflow-x:auto;padding-bottom:8px}
  .sol-tab{flex:none;max-width:280px}
  .sol-tab.active{transform:none}
  .about-wrap{grid-template-columns:1fr;gap:70px}
  .about-video{right:0}
}
@media(max-width:900px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;top:76px;left:0;right:0;flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(4,8,18,.97);backdrop-filter:blur(20px);padding:18px 5%;
    border-bottom:1px solid var(--panel-brd);
    transform:translateY(-130%);transition:transform .4s;pointer-events:none;
  }
  .nav-links.open{transform:none;pointer-events:auto}
  .nav-links a{padding:14px 16px;font-size:16px}
  .nav-cta{margin:8px 0 0;text-align:center}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .product-feature{grid-template-columns:1fr}
  .pf-media{min-height:300px;position:relative;height:300px}
  .sol-panel{grid-template-columns:1fr}
  .sol-media{min-height:280px;height:280px}
  .strength-grid,.news-grid{grid-template-columns:1fr}
  .contact-wrap{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:80px 0}
}
@media(max-width:640px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .pf-body{padding:34px 26px}
  .pf-specs{flex-direction:column}
  .pf-prev{left:8px}
  .pf-next{right:8px}
  .pf-dot{padding:8px 14px;font-size:12px}
  .pcard-img{height:120px}
  .sol-info{padding:30px 22px}
  .form-row{grid-template-columns:1fr}
  .hero h1{letter-spacing:2px}
  .hero-sub br{display:none}
}

/* ══════════ 荣誉资质 ══════════ */
.honors{
  background:linear-gradient(180deg,var(--bg2) 0%,#081226 50%,var(--bg2) 100%);
  border-top:1px solid rgba(90,140,220,.10);border-bottom:1px solid rgba(90,140,220,.10);
  overflow:hidden;
}
.cert-marquee{
  overflow:hidden;position:relative;padding:6px 0 10px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
}
.cert-track{display:flex;width:max-content;animation:certScroll 82s linear infinite}
.cert-marquee:hover .cert-track{animation-play-state:paused}
@keyframes certScroll{to{transform:translateX(-50%)}}
.cert-card{
  width:196px;flex:none;margin-right:22px;
  background:rgba(255,255,255,.035);border:1px solid rgba(120,160,220,.14);
  border-radius:14px;padding:12px;transition:transform .35s,border-color .35s,box-shadow .35s;
}
.cert-card:hover{
  transform:translateY(-5px);border-color:rgba(0,216,255,.5);
  box-shadow:0 14px 34px rgba(0,40,90,.45);
}
.cert-thumb{
  position:relative;background:#fff;border-radius:9px;overflow:hidden;
  aspect-ratio:3/4;display:flex;align-items:center;justify-content:center;
}
.cert-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.cert-type{
  position:absolute;left:8px;top:8px;font-size:11px;letter-spacing:.5px;
  background:rgba(8,24,52,.85);color:#7fd4ff;padding:3px 9px;border-radius:20px;
  backdrop-filter:blur(2px);
}
.cert-name{
  margin-top:11px;font-size:13px;color:#cfe0f5;text-align:center;line-height:1.55;
  height:40px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.honors-stats{
  margin-top:54px;display:flex;align-items:center;justify-content:center;gap:clamp(26px,5vw,72px);
}
.hstat{text-align:center}
.hstat b{
  display:block;font-family:Rajdhani,var(--font-en);font-size:clamp(34px,3.4vw,46px);font-weight:700;
  background:linear-gradient(120deg,#37b6ff,#00d8ff);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hstat span{font-size:13.5px;color:var(--muted);letter-spacing:2px}
.hstat-line{width:1px;height:44px;background:linear-gradient(180deg,transparent,rgba(120,170,255,.4),transparent)}

/* ══════════ 资料下载 ══════════ */
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;max-width:1020px;margin:0 auto}
.dl-card{
  display:flex;align-items:center;gap:22px;padding:30px 32px;border-radius:18px;
  background:linear-gradient(135deg,rgba(16,34,66,.85),rgba(9,20,42,.9));
  border:1px solid rgba(110,160,230,.16);transition:transform .35s,border-color .35s,box-shadow .35s;
}
.dl-card:hover{
  transform:translateY(-4px);border-color:rgba(0,216,255,.55);
  box-shadow:0 18px 44px rgba(0,40,100,.5);
}
.dl-icon{
  position:relative;flex:none;width:76px;height:76px;border-radius:16px;
  background:linear-gradient(135deg,rgba(0,120,220,.22),rgba(0,216,255,.10));
  border:1px solid rgba(0,180,255,.3);display:flex;align-items:center;justify-content:center;
}
.dl-icon svg{width:36px;height:36px;fill:none;stroke:#39c3ff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.dl-icon span{
  position:absolute;right:-8px;bottom:-8px;font-size:11px;font-weight:700;letter-spacing:1px;
  background:linear-gradient(120deg,#0a7dff,#00d8ff);color:#04101f;padding:3px 8px;border-radius:8px;
}
.dl-info{flex:1;min-width:0}
.dl-info h4{font-size:18.5px;font-weight:700;letter-spacing:.5px;margin-bottom:7px}
.dl-info p{font-size:13.5px;color:var(--muted);line-height:1.6}
.dl-meta{display:inline-block;margin-top:10px;font-size:12px;color:#6f86aa;letter-spacing:.5px}
.dl-btn{
  flex:none;display:flex;align-items:center;gap:7px;font-size:14px;font-weight:600;letter-spacing:1px;
  color:#04101f;background:linear-gradient(120deg,#2ea8ff,#00d8ff);
  padding:11px 20px;border-radius:11px;transition:filter .3s,transform .3s;
}
.dl-btn svg{width:17px;height:17px;fill:none;stroke:#04101f;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.dl-card:hover .dl-btn{filter:brightness(1.12)}
.dl-note{margin-top:34px;text-align:center;font-size:14px;color:var(--muted)}
.dl-note a{color:var(--cyan);text-decoration:none}
.dl-note a:hover{text-decoration:underline}

@media(max-width:860px){
  .dl-grid{grid-template-columns:1fr}
  .dl-card{padding:24px 22px;gap:16px}
  .cert-card{width:160px;margin-right:16px}
  .cert-track{animation-duration:46s}
  .honors-stats{flex-wrap:wrap;gap:22px}
  .hstat-line{display:none}
}

/* ══════════ 品牌全称 ══════════ */
.brand{display:flex;align-items:center;gap:12px}
.brand-names{display:flex;flex-direction:column;justify-content:center;line-height:1.35}
.brand-names b{
  font-size:15.5px;font-weight:700;letter-spacing:.5px;color:#eef4ff;white-space:nowrap;
}
.brand-names i{
  font-style:normal;font-family:Rajdhani,var(--font-en);font-size:9.5px;font-weight:600;
  letter-spacing:1.2px;color:#7f95b8;white-space:nowrap;
}
@media(max-width:1180px){.brand-names i{display:none}}
@media(max-width:960px){
  .brand-names b{font-size:13px}
  .brand-names i{display:none}
}
@media(max-width:560px){
  .brand-names b{font-size:12px;white-space:normal;line-height:1.3}
}
.footer-brand{align-items:flex-start}
.footer-brand .brand-logo-sm{margin-top:4px}

/* ══════════ 新闻卡片（数据驱动） ══════════ */
.ncard-media video{width:100%;height:100%;object-fit:cover;display:block}
.ncard-media{position:relative}
.ncard-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;background:rgba(6,20,44,.72);
  border:1.5px solid rgba(0,216,255,.7);color:#aee9ff;font-size:18px;
  display:flex;align-items:center;justify-content:center;pointer-events:none;
}
.ncard-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.ncard-foot .ncard-more{margin-top:0}
.ncard-date{font-size:12px;color:#5f7494;font-family:Rajdhani,var(--font-en);letter-spacing:1px}
.news-empty{
  grid-column:1/-1;text-align:center;padding:60px 0;color:var(--muted);font-size:15px;
  border:1px dashed rgba(120,160,220,.25);border-radius:14px;
}

/* ══════════ 证书仅滚动展示（无点击放大） ══════════ */

/* ── 语言切换按钮 ── */
.lang-toggle{
  flex:none;margin-left:12px;padding:8px 16px;border-radius:999px;cursor:pointer;
  border:1px solid rgba(0,216,255,.45);background:rgba(0,216,255,.07);color:var(--cyan);
  font:700 12px/1 var(--font-en);letter-spacing:.12em;transition:all .25s ease;
}
.lang-toggle:hover{background:rgba(0,216,255,.18);box-shadow:0 0 16px rgba(0,216,255,.35)}
.lang-toggle.is-en{background:var(--grad);color:#04101f;border-color:transparent;box-shadow:0 4px 16px rgba(0,190,255,.4)}
@media(max-width:900px){.lang-toggle{margin-left:auto;margin-right:8px}}

/* ══════════ 全球布局：点阵世界地图 ══════════ */
.global-map{border:1px solid var(--panel-brd);border-radius:22px;background:radial-gradient(ellipse at 60% 40%,rgba(20,60,140,.18),rgba(4,7,15,.4));padding:26px 20px;box-shadow:0 30px 80px rgba(0,20,60,.35)}
.wm-svg{width:100%;height:auto;display:block}
.wm-land circle{fill:#3a5a94;r:1.7px}
.wm-arc-base{fill:none;stroke:rgba(0,160,255,.26);stroke-width:1.1}
.wm-arc{fill:none;stroke:#2fc6ff;stroke-width:1.4;stroke-linecap:round;stroke-dasharray:14 86;animation:wmDash 3.4s linear infinite}
@keyframes wmDash{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}
.wm-city{fill:#8fe3ff;transform-box:fill-box;transform-origin:center;animation:wmCity 3.4s ease-in-out infinite}
@keyframes wmCity{0%,100%{transform:scale(.7);opacity:.55}50%{transform:scale(1.3);opacity:1}}
.wm-sz-core{fill:#00d8ff;filter:drop-shadow(0 0 6px rgba(0,216,255,.9))}
.wm-sz-ring{fill:none;stroke:#00d8ff;stroke-width:1.4;transform-box:fill-box;transform-origin:center;animation:wmPing 2.8s ease-out infinite}
.wm-sz-ring.r2{animation-delay:.95s}
.wm-sz-ring.r3{animation-delay:1.9s}
@keyframes wmPing{0%{transform:scale(.35);opacity:.95}100%{transform:scale(3.8);opacity:0}}
.wm-sz-label{fill:#aee9ff;font-size:14px;font-weight:600;letter-spacing:1px}
.global-stats{display:flex;gap:18px;margin-top:34px;flex-wrap:wrap}
.global-stats .gs{flex:1;min-width:200px;padding:22px 26px;border:1px solid var(--panel-brd);border-radius:16px;background:var(--panel);text-align:center}
.global-stats .gs b{display:block;font-size:30px;font-weight:800;font-family:var(--font-en);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.global-stats .gs span{font-size:13px;color:var(--muted);letter-spacing:1px}
.video-modal-box iframe{width:100%;border-radius:16px;border:1px solid var(--panel-brd);box-shadow:0 40px 100px rgba(0,0,0,.7);background:#000}
@media (prefers-reduced-motion: reduce){.wm-arc,.wm-city,.wm-sz-ring{animation:none}}

/* ═══════ 全局动效（fx.js：粒子背景 + 滚动入场） ═══════ */
.fx-particles{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.fx-fixed{position:fixed;z-index:0}
.section>*{position:relative;z-index:1}
.section>canvas.fx-particles{position:absolute;z-index:0}
.pd-main,.na-main,.footer{position:relative;z-index:1}
.fx-reveal{opacity:0;transform:translateY(30px);transition:opacity .75s cubic-bezier(.2,.7,.3,1),transform .75s cubic-bezier(.2,.7,.3,1)}
.fx-reveal.fx-in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  .fx-reveal{opacity:1;transform:none;transition:none}
}