:root{
  --navy:#0d2b45;
  --navy-2:#123a5c;
  --navy-3:#0a2136;
  --steel:#256d9c;
  --steel-2:#3d8fc0;
  --heat:#e07018;
  --heat-soft:rgba(224,112,24,.10);
  --line:#e3e9ef;
  --line-2:#cfd9e2;
  --bg:#ffffff;
  --bg-alt:#f4f7fa;
  --text:#15212d;
  --muted:#5c6b7a;
  --muted-2:#8794a1;
  --radius:2px;
  --shadow:0 18px 44px -22px rgba(13,43,69,.35);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  font-size:16px;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--steel);font-weight:600;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--steel);display:block}
h1,h2,h3,h4{line-height:1.25;font-weight:600;letter-spacing:-.01em}
.sec-title{font-size:clamp(1.6rem,2.6vw,2.15rem);margin:14px 0 16px;color:var(--navy)}
.sec-desc{color:var(--muted);max-width:640px;font-size:15.5px}
section{padding:96px 0}
.alt{background:var(--bg-alt)}

/* ---------- top bar ---------- */
.topbar{background:var(--navy-3);color:#a9bccd;font-size:12.5px;letter-spacing:.04em}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar strong{color:#dfe8f0;font-weight:500}
.topbar .tb-right{display:flex;gap:26px}
.topbar span{display:inline-flex;align-items:center;gap:7px}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{
  width:34px;height:34px;border:1.5px solid var(--navy);border-radius:50%;
  display:grid;place-items:center;position:relative;flex:none;
}
.logo-mark::after{content:"";width:10px;height:10px;background:var(--heat);border-radius:50%}
.logo-img{height:42px;width:auto;flex:none;display:block}
footer .logo-img{height:36px}
.logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo-txt b{font-size:17px;letter-spacing:.06em;color:var(--navy)}
.logo-txt small{font-size:9.5px;letter-spacing:.2em;color:var(--muted-2);text-transform:uppercase}
nav{display:flex;gap:34px}
nav a{font-size:14.5px;color:var(--text);position:relative;padding:6px 0;transition:color .2s}
nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1.5px;background:var(--steel);transition:width .25s}
nav a:hover{color:var(--steel)}
nav a:hover::after{width:100%}
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:12px 24px;
  font-size:14px;font-weight:500;border-radius:var(--radius);
  transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--navy);color:#fff;border:1px solid var(--navy)}
.btn-primary:hover{background:var(--steel);border-color:var(--steel)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6)}
.btn-line{border:1px solid var(--line-2);color:var(--navy)}
.btn-line:hover{border-color:var(--navy);background:var(--navy);color:#fff}
.btn svg{width:15px;height:15px;transition:transform .22s}
.btn:hover svg{transform:translateX(3px)}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger i{display:block;width:22px;height:1.6px;background:var(--navy);transition:.25s}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;position:relative;overflow:hidden;padding:0;border-bottom:1px solid rgba(255,255,255,.08)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 85%);
}
.hero::after{
  content:"";position:absolute;right:-14%;top:-28%;width:780px;height:780px;
  background:radial-gradient(circle,rgba(224,112,24,.24),transparent 60%),
             radial-gradient(circle at 60% 70%,rgba(61,143,192,.22),transparent 62%);
  pointer-events:none;
}
.hero .wrap{
  position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:60px;align-items:center;
  padding-top:92px;padding-bottom:88px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.14em;
  color:#8fb6d1;border:1px solid rgba(143,182,209,.3);padding:6px 14px;border-radius:100px;margin-bottom:26px;
}
.hero-tag i{width:5px;height:5px;border-radius:50%;background:var(--heat);display:block;box-shadow:0 0 8px rgba(224,112,24,.9)}
.hero h1{font-size:clamp(2.1rem,3.9vw,3.3rem);font-weight:600;letter-spacing:-.015em;line-height:1.22;margin-bottom:22px}
.hero h1 em{font-style:normal;color:#e0a173;position:relative}
.hero p.lead{color:#b3c6d6;font-size:16.5px;line-height:1.85;max-width:530px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:52px}
.hero-metrics{display:flex;gap:44px;border-top:1px solid rgba(255,255,255,.12);padding-top:26px}
.hero-metrics div span{display:block;font-size:26px;font-weight:600;letter-spacing:-.02em}
.hero-metrics div small{color:#8fa6ba;font-size:12.5px;letter-spacing:.04em}
.hero-visual{position:relative;display:grid;place-items:center}
.hero-visual svg{width:100%;max-width:430px;opacity:.96}
.spin{transform-origin:center;animation:spin 60s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.pulse{animation:pulse 3.2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:.85}}
.hero-badge{
  position:absolute;bottom:10px;left:0;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(8px);
  padding:12px 18px;font-size:12.5px;color:#c3d5e3;letter-spacing:.03em;
}
.hero-badge b{display:block;color:#fff;font-size:15px;letter-spacing:.05em;margin-bottom:2px}

/* ---------- stat strip ---------- */
.strip{background:var(--navy-2);color:#fff;padding:0;border-bottom:1px solid rgba(255,255,255,.08)}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strip .item{padding:34px 0 34px 34px;border-left:1px solid rgba(255,255,255,.1)}
.strip .item:first-child{border-left:none;padding-left:0}
.strip .num{font-size:30px;font-weight:600;letter-spacing:-.02em;display:flex;align-items:baseline;gap:3px}
.strip .num i{font-style:normal;font-size:15px;color:#8fb6d1;font-weight:500}
.strip .lbl{color:#a5b9c9;font-size:13px;margin-top:2px;letter-spacing:.03em}

/* ---------- products ---------- */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:52px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.pcard{background:#fff;padding:32px 26px 28px;position:relative;transition:background .25s;overflow:hidden}
.pcard::after{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:var(--heat);transform:scaleX(0);transform-origin:left;transition:transform .35s}
.pcard:hover{background:#fbfdff}
.pcard:hover::after{transform:scaleX(1)}
.pcard .ico{width:44px;height:44px;margin-bottom:22px;color:var(--steel)}
.pcard h3{font-size:16.5px;margin-bottom:10px;color:var(--navy)}
.pcard p{font-size:13.8px;color:var(--muted);line-height:1.8;margin-bottom:20px;min-height:92px}
.spec{display:flex;flex-direction:column;gap:7px;border-top:1px dashed var(--line-2);padding-top:16px}
.spec li{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted-2);gap:10px}
.spec li b{color:var(--text);font-weight:500;font-variant-numeric:tabular-nums;text-align:right}

/* ---------- capability ---------- */
.cap-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:72px;align-items:center}
.cap-list{display:flex;flex-direction:column;gap:2px}
.cap-item{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}
.cap-item:first-child{border-top:1px solid var(--line)}
.cap-item .idx{font-size:12px;color:var(--steel);font-weight:600;letter-spacing:.08em;padding-top:4px;font-variant-numeric:tabular-nums}
.cap-item h4{font-size:16px;margin-bottom:6px;color:var(--navy)}
.cap-item p{font-size:14px;color:var(--muted);line-height:1.75}
.cap-visual{background:var(--navy);padding:40px;position:relative;overflow:hidden;min-height:420px;display:flex;flex-direction:column;justify-content:flex-end}
.cap-visual::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;
}
.cap-visual::after{content:"";position:absolute;left:-20%;bottom:-40%;width:420px;height:420px;background:radial-gradient(circle,rgba(224,112,24,.3),transparent 65%)}
.cap-visual .vnum{position:relative;font-size:64px;font-weight:600;color:#fff;line-height:1;letter-spacing:-.03em}
.cap-visual .vnum span{font-size:22px;color:#e0a173;margin-left:6px}
.cap-visual .vlbl{position:relative;color:#a5b9c9;font-size:14px;margin-top:12px;max-width:310px;line-height:1.8}
.cap-visual .curve{position:absolute;right:0;top:24px;width:100%;opacity:.9}

/* ---------- industries ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:52px}
.ind{border:1px solid var(--line);padding:30px 22px;background:#fff;transition:.25s;text-align:left}
.ind:hover{border-color:var(--steel);transform:translateY(-3px);box-shadow:var(--shadow)}
.ind svg{width:32px;height:32px;color:var(--steel);margin-bottom:18px}
.ind h4{font-size:15px;margin-bottom:8px}
.ind p{font-size:12.8px;color:var(--muted);line-height:1.7}

/* ---------- quality ---------- */
.q-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.cert-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:32px}
.cert{border:1px solid var(--line);padding:18px 20px;display:flex;align-items:center;gap:14px;background:#fff}
.cert .ck{width:22px;height:22px;flex:none;border-radius:50%;background:var(--heat-soft);display:grid;place-items:center}
.cert .ck svg{width:12px;height:12px;color:var(--heat)}
.cert b{font-size:13.5px;font-weight:500;display:block}
.cert small{font-size:11.5px;color:var(--muted-2);letter-spacing:.04em}
.q-table{background:#fff;border:1px solid var(--line)}
.q-table .row{display:grid;grid-template-columns:1.2fr 1fr 1fr;padding:15px 22px;border-bottom:1px solid var(--line);font-size:13.5px}
.q-table .row:last-child{border-bottom:none}
.q-table .row.head{background:var(--bg-alt);font-size:12px;letter-spacing:.1em;color:var(--muted-2);text-transform:uppercase}
.q-table .row span:nth-child(2),.q-table .row span:nth-child(3){font-variant-numeric:tabular-nums;color:var(--muted)}
.q-table .row b{font-weight:600;color:var(--navy)}

/* ---------- cta ---------- */
.cta{background:var(--navy);color:#fff;padding:74px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-6%;top:-60%;width:520px;height:520px;background:radial-gradient(circle,rgba(224,112,24,.26),transparent 65%)}
.cta .wrap{position:relative;display:flex;justify-content:space-between;align-items:center;gap:48px;flex-wrap:wrap}
.cta h2{font-size:clamp(1.5rem,2.4vw,2rem);margin-bottom:12px}
.cta p{color:#a9bccd;font-size:15px;max-width:580px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px}
.info-list{margin-top:34px;display:flex;flex-direction:column;gap:0}
.info-item{display:grid;grid-template-columns:22px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.info-item svg{width:17px;height:17px;color:var(--steel);margin-top:3px}
.info-item b{display:block;font-size:14px;margin-bottom:2px}
.info-item span{font-size:13.5px;color:var(--muted);line-height:1.7}
form{background:#fff;border:1px solid var(--line);padding:38px 36px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:8px;letter-spacing:.04em}
.field label i{color:#c0392b;font-style:normal;margin-left:2px}
.field input,.field textarea,.field select{
  width:100%;border:1px solid var(--line-2);padding:11px 14px;font:inherit;font-size:14px;
  border-radius:var(--radius);background:#fcfdfe;transition:.2s;color:var(--text);
}
.field textarea{resize:vertical;min-height:104px}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--steel);background:#fff;box-shadow:0 0 0 3px rgba(37,109,156,.09)}
form .btn-primary{width:100%;justify-content:center;margin-top:6px;padding:14px}
.form-note{font-size:12px;color:var(--muted-2);margin-top:14px;text-align:center}
.form-msg{display:none;margin-top:14px;padding:11px 14px;font-size:13px;background:#eef7f1;border:1px solid #c5e3d1;color:#1e6b42}
.form-msg.show{display:block}

/* ---------- footer ---------- */
footer{background:var(--navy-3);color:#8ea4b6;padding:64px 0 0;font-size:13.5px}
.f-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.09)}
footer .logo-txt b{color:#fff}
footer .logo-txt small{color:#6d8399}
.f-desc{margin-top:18px;line-height:1.9;max-width:320px;color:#8ea4b6}
footer h5{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px;font-weight:600}
.f-links{display:flex;flex-direction:column;gap:11px}
.f-links a{transition:.2s}
.f-links a:hover{color:#fff}
.f-bottom{display:flex;justify-content:space-between;gap:20px;padding:22px 0;font-size:12.5px;color:#6d8399;flex-wrap:wrap}
.f-bottom a:hover{color:#a9bccd}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}

@media (max-width:1024px){
  .hero .wrap{grid-template-columns:1fr;gap:44px;padding-top:64px;padding-bottom:64px}
  .hero-visual{display:none}
  .grid-4{grid-template-columns:1fr 1fr}
  .cap-grid,.q-wrap,.contact-grid{grid-template-columns:1fr;gap:44px}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .strip .wrap{grid-template-columns:1fr 1fr}
  .strip .item:nth-child(3){border-left:none;padding-left:0}
  .f-top{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  section{padding:64px 0}
  .wrap{padding:0 20px}
  .topbar{display:none}
  nav{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;gap:0;padding:8px 20px 24px;border-bottom:1px solid var(--line);display:none}
  nav.open{display:flex}
  nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  header .btn-line{display:none}
  .burger{display:flex}
  .hero-metrics{flex-wrap:wrap;gap:24px}
  .grid-4,.ind-grid,.f-row,.cert-list{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:20px}
  form{padding:26px 20px}
  .cta .wrap{flex-direction:column;align-items:flex-start}
}
/* 产品卡片可点击（首页） */
a.pcard{display:block;color:inherit}
.pcard .more{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--steel);margin-top:16px;letter-spacing:.02em;transition:gap .2s}
a.pcard:hover .more{gap:10px}