:root{
    --bg:#050810;
    --bg-2:#1A3155;
    --bg-3:#12263f;
    --card:rgba(255,255,255,0.03);
    --card-border:rgba(255,255,255,0.08);
    --brand:#0D8DFD;
    --brand-2:#34B8F9;
    --cyan:#34B8F9;
    --text:#f1f5f9;
    --text-2:#94a3b8;
    --text-3:#64748b;
    --grad:linear-gradient(135deg,#0D8DFD 0%,#34B8F9 100%);
    --grad-text:linear-gradient(135deg,#34B8F9 0%,#0D8DFD 100%);
    --bg-grad:linear-gradient(180deg,#050810 0%,#1A3155 100%);
    --radius:18px;
    --maxw:1200px;
    --nav-h:72px;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
    background-color:var(--bg);
    background-image:var(--bg-grad);
    background-attachment:fixed;
    color:var(--text);
    line-height:1.7;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  ::selection{background:rgba(52,184,249,.3)}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}

  .bg-grid{
    position:fixed;inset:0;z-index:-2;pointer-events:none;
    background-image:
      linear-gradient(rgba(148,163,184,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(148,163,184,.05) 1px,transparent 1px);
    background-size:56px 56px;
    -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
    mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 40%,transparent 100%);
  }
  .bg-glow{
    position:fixed;inset:0;z-index:-1;pointer-events:none;
    background:
      radial-gradient(600px 400px at 80% -5%,rgba(13,141,253,.22),transparent 60%),
      radial-gradient(500px 380px at 10% 10%,rgba(52,184,249,.10),transparent 60%);
  }

  header{
    position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
    display:flex;align-items:center;transition:background .3s,border-color .3s;
    border-bottom:1px solid transparent;
  }
  header.scrolled{background:rgba(5,8,16,.8);backdrop-filter:blur(16px);border-bottom-color:var(--card-border)}
  .nav-inner{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between}
  .logo{display:flex;align-items:center;gap:12px;font-weight:700;font-size:19px;letter-spacing:.5px}
  .logo-mark{width:36px;height:36px;border-radius:10px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:17px;box-shadow:0 4px 18px rgba(13,141,253,.45)}
  .logo small{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:2px}
  nav.menu{display:flex;align-items:center;gap:32px}
  nav.menu a{font-size:15px;color:var(--text-2);transition:color .2s;position:relative}
  nav.menu a:hover{color:var(--text)}
  nav.menu a.active{color:var(--text)}
  nav.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:2px;background:var(--grad);border-radius:2px}
  .nav-cta{padding:9px 20px;border-radius:10px;background:var(--grad);color:#fff;font-size:14px;font-weight:600;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 18px rgba(13,141,253,.35)}
  .nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(13,141,253,.5)}
  .menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer}

  .container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
  section{padding:96px 0;position:relative}
  .sec-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;color:var(--brand-2);text-transform:uppercase;margin-bottom:16px;font-weight:600}
  .sec-tag::before{content:"";width:22px;height:1px;background:var(--brand-2)}
  .sec-title{font-size:40px;font-weight:800;letter-spacing:-.5px;line-height:1.2;margin-bottom:14px}
  .sec-title .g{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .sec-desc{color:var(--text-2);font-size:18px;max-width:680px}

  /* Hero */
  .hero{min-height:100vh;display:flex;align-items:center;padding-top:var(--nav-h)}
  .hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
  .hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(13,141,253,.12);border:1px solid rgba(52,184,249,.25);font-size:13px;color:var(--brand-2);margin-bottom:26px}
  .hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
  .hero h1{font-size:56px;font-weight:800;line-height:1.12;letter-spacing:-1px;margin-bottom:22px}
  .hero h1 .g{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
  .hero p.sub{font-size:20px;color:var(--text-2);max-width:520px;margin-bottom:34px}
  .hero-actions{display:flex;gap:16px;flex-wrap:wrap}
  .btn{display:inline-flex;align-items:center;gap:9px;padding:13px 30px;border-radius:12px;font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer}
  .btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 24px rgba(13,141,253,.4)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(13,141,253,.55)}
  .btn-ghost{border:1px solid var(--card-border);color:var(--text)}
  .btn-ghost:hover{border-color:var(--brand-2);transform:translateY(-2px)}
  .hero-keywords{margin-top:34px;display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
  .hero-keywords span{display:flex;align-items:center;gap:7px}
  .hero-keywords span::before{content:"◆";font-size:9px;color:var(--brand-2)}

  .hero-visual{position:relative;height:460px}
  .hero-visual .ring{position:absolute;border-radius:50%;border:1px solid rgba(52,184,249,.18)}
  .ring-1{width:380px;height:380px;top:20px;right:10px;animation:spin 26s linear infinite}
  .ring-2{width:290px;height:290px;top:65px;right:55px;border-color:rgba(13,141,253,.25)!important;animation:spin 20s linear infinite reverse}
  .ring-3{width:200px;height:200px;top:110px;right:100px;border-color:rgba(52,184,249,.3)!important}
  .ring .node{position:absolute;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
  .hero-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:150px;height:150px;border-radius:28px;background:rgba(15,23,42,.8);border:1px solid var(--card-border);backdrop-filter:blur(8px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;box-shadow:0 0 60px rgba(13,141,253,.3)}
  .hero-core .ico{font-size:36px}
  .hero-core b{font-size:16px;font-weight:700}
  .hero-core span{font-size:11px;color:var(--text-3)}
  .float-chip{position:absolute;padding:10px 16px;border-radius:12px;background:rgba(15,23,42,.85);border:1px solid var(--card-border);backdrop-filter:blur(8px);font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:8px;box-shadow:0 8px 24px rgba(0,0,0,.4)}
  .float-chip b{color:var(--text)}
  .chip-1{top:30px;left:20px;animation:float 5s ease-in-out infinite}
  .chip-2{top:150px;right:0;animation:float 6s ease-in-out infinite .8s}
  .chip-3{bottom:30px;left:40px;animation:float 5.5s ease-in-out infinite .4s}
  @keyframes spin{to{transform:rotate(360deg)}}
  @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

  /* 数据 */
  .stats{background:var(--bg-2);border-top:1px solid var(--card-border);border-bottom:1px solid var(--card-border)}
  .stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:48px 0}
  .stat{text-align:center}
  .stat .num{font-size:46px;font-weight:800;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px}
  .stat .num small{font-size:22px}
  .stat .label{color:var(--text-2);font-size:14px;margin-top:6px}

  /* 产品 */
  .prod-feature{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
  .prod-card{position:relative;padding:34px 30px;border-radius:var(--radius);background:var(--card);border:1px solid var(--card-border);transition:transform .3s,border-color .3s,box-shadow .3s;overflow:hidden}
  .prod-card::before{content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s;background:radial-gradient(400px 200px at 50% 0%,rgba(13,141,253,.15),transparent 70%)}
  .prod-card:hover{transform:translateY(-6px);border-color:rgba(52,184,249,.35);box-shadow:0 20px 50px rgba(0,0,0,.45)}
  .prod-card:hover::before{opacity:1}
  .prod-card.feature{border-color:rgba(52,184,249,.25)}
  .prod-icon{width:56px;height:56px;border-radius:16px;background:rgba(13,141,253,.15);display:flex;align-items:center;justify-content:center;font-size:27px;margin-bottom:22px;border:1px solid rgba(52,184,249,.2)}
  .prod-card h3{font-size:21px;font-weight:700;margin-bottom:12px;position:relative}
  .prod-card p{color:var(--text-2);font-size:16px;position:relative}
  .prod-card .tags{display:flex;flex-wrap:wrap;gap:8px;position:relative;margin-top:18px}
  .prod-card .tag{padding:4px 11px;border-radius:8px;font-size:12px;background:rgba(148,163,184,.08);color:var(--text-2);border:1px solid var(--card-border)}

  /* 产品全览（9个次要） */
  .prod-all{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
  .prod-mini{padding:24px 22px;border-radius:14px;background:var(--card);border:1px solid var(--card-border);transition:transform .25s,border-color .25s;display:flex;gap:16px;align-items:flex-start}
  .prod-mini:hover{transform:translateY(-4px);border-color:rgba(52,184,249,.3)}
  .prod-mini .ic{font-size:26px;flex-shrink:0;line-height:1.3}
  .prod-mini h4{font-size:16px;font-weight:700;margin-bottom:5px}
  .prod-mini p{font-size:14.5px;color:var(--text-2);line-height:1.6}

  /* 技术能力 */
  .tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
  .tech-item{padding:26px 22px;border-radius:14px;background:var(--card);border:1px solid var(--card-border);transition:transform .25s,border-color .25s}
  .tech-item:hover{transform:translateY(-4px);border-color:rgba(52,184,249,.3)}
  .tech-item .ic{font-size:28px;margin-bottom:14px}
  .tech-item h4{font-size:16px;font-weight:700;margin-bottom:6px}
  .tech-item p{font-size:14.5px;color:var(--text-2);line-height:1.6}

  /* 案例 */
  .cases{margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .case-card{padding:28px;border-radius:var(--radius);background:var(--card);border:1px solid var(--card-border);transition:transform .3s,border-color .3s}
  .case-card:hover{transform:translateY(-5px);border-color:rgba(52,184,249,.3)}
  .case-card .org{font-size:17px;font-weight:700;margin-bottom:6px}
  .case-card .loc{font-size:12px;color:var(--text-3);margin-bottom:14px}
  .case-card .desc{font-size:15px;color:var(--text-2)}
  .case-card .tag{margin-top:16px;display:inline-block;padding:4px 12px;border-radius:8px;font-size:12px;background:rgba(52,184,249,.1);color:var(--cyan);border:1px solid rgba(52,184,249,.25)}

  /* 荣誉 */
  .honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
  .honor-item{padding:28px 20px;border-radius:var(--radius);text-align:center;background:var(--card);border:1px solid var(--card-border);transition:transform .3s,border-color .3s}
  .honor-item:hover{transform:translateY(-4px);border-color:rgba(52,184,249,.3)}
  .honor-item .ico{font-size:30px;margin-bottom:14px}
  .honor-item h4{font-size:16px;font-weight:700;margin-bottom:6px}
  .honor-item p{font-size:13px;color:var(--text-3)}

  /* 愿景 */
  .vision{background:var(--bg-2);border-top:1px solid var(--card-border);border-bottom:1px solid var(--card-border)}
  .vision-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
  .vision-card{padding:34px 30px;border-radius:var(--radius);background:var(--card);border:1px solid var(--card-border)}
  .vision-card .t{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:2px;color:var(--brand-2);margin-bottom:16px;font-weight:600}
  .vision-card .t .diamond{width:9px;height:9px;background:var(--grad);transform:rotate(45deg);border-radius:2px}
  .vision-card p{font-size:16px;color:var(--text);line-height:1.8}
  .vision-card.vision-main{border-color:rgba(52,184,249,.3);background:linear-gradient(160deg,rgba(13,141,253,.12),rgba(15,23,42,.6))}
  .vision-card.vision-main p{font-size:19px;font-weight:600}

  /* 联系 */
  .contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:48px}
  .contact-item{display:flex;align-items:flex-start;gap:16px;margin-bottom:26px}
  .contact-item .ico{width:46px;height:46px;border-radius:12px;background:rgba(13,141,253,.14);border:1px solid rgba(52,184,249,.2);display:flex;align-items:center;justify-content:center;font-size:21px;flex-shrink:0}
  .contact-item .k{font-size:13px;color:var(--text-3);margin-bottom:3px}
  .contact-item .v{font-size:16px;color:var(--text);font-weight:500}
  .contact-form{display:flex;flex-direction:column;gap:16px}
  .contact-form input,.contact-form textarea{width:100%;padding:14px 18px;border-radius:12px;background:var(--card);border:1px solid var(--card-border);color:var(--text);font-size:15px;font-family:inherit;transition:border-color .2s;outline:none;resize:vertical}
  .contact-form input:focus,.contact-form textarea:focus{border-color:var(--brand-2)}
  .contact-form input::placeholder,.contact-form textarea::placeholder{color:var(--text-3)}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

  footer{border-top:1px solid var(--card-border);padding:36px 0;background:var(--bg)}
  .footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
  .footer-inner .c{color:var(--text-3);font-size:13px}
  .footer-inner .links{display:flex;gap:22px;font-size:13px;color:var(--text-3)}
  .footer-inner .links a:hover{color:var(--text)}

  .reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
  .reveal.visible{opacity:1;transform:none}

  @media(max-width:900px){
    nav.menu{
      display:none;position:absolute;top:var(--nav-h);left:0;right:0;
      background:rgba(5,8,16,.98);backdrop-filter:blur(16px);
      flex-direction:column;padding:6px 28px 18px;gap:0;
      border-bottom:1px solid var(--card-border);
    }
    nav.menu.open{display:flex}
    nav.menu a{padding:15px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:16px}
    nav.menu a:last-child{border-bottom:none}
    nav.menu a.active::after{display:none}
    .menu-toggle{display:block}
    .nav-cta{display:none}
    .hero-inner{grid-template-columns:1fr;gap:20px}
    .hero h1{font-size:40px}
    .hero-visual{height:380px}
    .hero-visual .float-chip{font-size:12px;padding:8px 12px;gap:6px}
    .chip-1{top:14px;left:8px}
    .chip-2{top:14px;right:8px}
    .chip-3{bottom:14px;left:8px}
    .prod-feature,.prod-all,.cases,.vision-grid{grid-template-columns:1fr}
    .tech-grid,.honor-grid,.stats-inner{grid-template-columns:repeat(2,1fr)}
    .contact-inner{grid-template-columns:1fr}
    .sec-title{font-size:30px}
  }
  @media(max-width:520px){
    .tech-grid,.honor-grid,.stats-inner{grid-template-columns:1fr}
    .form-row{grid-template-columns:1fr}
    .hero h1{font-size:32px}
  }


/* ===== 子页面通用 ===== */
.page-hero{padding:170px 0 72px;text-align:center;position:relative}
.page-hero .sec-tag{justify-content:center}
.page-hero .sec-tag::before{display:none}
.page-hero h1{font-size:46px;font-weight:800;letter-spacing:-.5px;line-height:1.2}
.page-hero h1 .g{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.page-hero p{color:var(--text-2);font-size:18px;max-width:680px;margin:16px auto 0}

/* ===== 时间轴（发展历程） ===== */
.timeline{position:relative;margin-top:48px;padding-left:20px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand),var(--cyan));border-radius:2px}
.tl-item{position:relative;margin-bottom:40px;padding-left:40px}
.tl-item::before{content:"";position:absolute;left:2px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.tl-item:last-child{margin-bottom:0}
.tl-year{font-size:14px;color:var(--brand-2);font-weight:700;letter-spacing:1px;margin-bottom:8px}
.tl-item h3{font-size:18px;font-weight:700;margin-bottom:8px}
.tl-item ul{list-style:none;padding:0}
.tl-item li{color:var(--text-2);font-size:15px;padding:3px 0;position:relative;padding-left:18px}
.tl-item li::before{content:"▸";position:absolute;left:0;color:var(--brand-2)}

/* ===== 产品详情 ===== */
.prod-sec{padding:56px 0;border-bottom:1px solid var(--card-border)}
.prod-sec:last-child{border-bottom:none}
.prod-head{display:flex;align-items:center;gap:20px;margin-bottom:22px}
.prod-head .ic{width:66px;height:66px;border-radius:18px;background:rgba(13,141,253,.15);display:flex;align-items:center;justify-content:center;font-size:33px;border:1px solid rgba(52,184,249,.2);flex-shrink:0}
.prod-head h2{font-size:27px;font-weight:800;letter-spacing:-.3px}
.prod-head .en{font-size:12px;color:var(--text-3);letter-spacing:2px;margin-top:3px}
.prod-desc{color:var(--text-2);font-size:17.5px;max-width:900px;line-height:1.9;margin-bottom:24px}
.prod-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.prod-feat{padding:18px 20px;border-radius:14px;background:var(--card);border:1px solid var(--card-border)}
.prod-feat b{display:block;font-size:16px;margin-bottom:6px;color:var(--text)}
.prod-feat p{font-size:14.5px;color:var(--text-2);line-height:1.6}
.prod-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.prod-tags .tag{padding:5px 13px;border-radius:8px;font-size:12px;background:rgba(148,163,184,.08);color:var(--text-2);border:1px solid var(--card-border)}

/* ===== 荣誉证书 ===== */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.cert-item{padding:26px 20px;border-radius:14px;background:var(--card);border:1px solid var(--card-border);text-align:center;transition:transform .25s,border-color .25s}
.cert-item:hover{transform:translateY(-4px);border-color:rgba(52,184,249,.3)}
.cert-item .ic{font-size:30px;margin-bottom:12px}
.cert-item h4{font-size:15px;font-weight:700;margin-bottom:6px}
.cert-item p{font-size:12px;color:var(--text-3)}

/* ===== 面包屑 ===== */
.crumb{font-size:13px;color:var(--text-3);margin-top:18px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-2)}

@media(max-width:900px){
  .page-hero h1{font-size:34px}
  .prod-feats,.cert-grid{grid-template-columns:1fr}
  .prod-head{flex-direction:column;text-align:center}
  .prod-head .ic{margin:0 auto}
}


/* ===== 证书卡片（图片展示） ===== */
.cert-card{padding:18px;border-radius:14px;background:var(--card);border:1px solid var(--card-border);text-align:center;transition:transform .25s,border-color .25s}
.cert-card:hover{transform:translateY(-4px);border-color:rgba(52,184,249,.3)}
.cert-img{width:100%;height:220px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.06);border:1px solid var(--card-border);border-radius:10px;padding:12px;margin-bottom:14px;overflow:hidden}
.cert-img img{max-width:100%;max-height:100%;object-fit:contain;border-radius:4px}
.cert-card h4{font-size:15px;font-weight:700;margin-bottom:4px;color:var(--text)}
.cert-card p{font-size:13px;color:var(--text-3)}

/* ===== 产品图标图片 ===== */
.prod-icon img{width:30px;height:30px;object-fit:contain;display:block}
.prod-mini .ic img{width:26px;height:26px;object-fit:contain;display:block;flex-shrink:0}
.prod-head .ic img{width:38px;height:38px;object-fit:contain;display:block}