:root{
  --navy:#0a1c2e; --navy2:#0f2c47; --ink:#182635; --teal:#0e9e8e; --teal-d:#0b7f72;
  --amber:#e08a2e; --bg:#f6f8fa; --line:#e4eaf0; --mut:#5b6b7b; --white:#fff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:99;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hd .bar{display:flex;align-items:center;gap:28px;height:72px}
.hd img.logo{height:44px}
.hd nav{display:flex;gap:22px;margin-left:auto}
.hd nav a{font-size:15px;color:var(--ink);padding:6px 2px;border-bottom:2px solid transparent;white-space:nowrap}
.hd nav a:hover,.hd nav a.on{color:var(--teal);border-color:var(--teal)}
.hd .tel{display:flex;flex-direction:column;line-height:1.25;text-align:right}
.hd .tel b{font-size:17px;color:var(--teal-d)}
.hd .tel span{font-size:11px;color:var(--mut)}
#navT{display:none}
.burger{display:none;font-size:24px;cursor:pointer;color:var(--navy)}
/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:
 radial-gradient(1100px 500px at 82% -10%,rgba(14,158,142,.38),transparent 60%),
 radial-gradient(900px 460px at 8% 110%,rgba(224,138,46,.16),transparent 55%),
 linear-gradient(160deg,#0a1c2e 0%,#0f2c47 58%,#0b2438 100%)}
.hero svg.net{position:absolute;inset:0;width:100%;height:100%;opacity:.13}
.hero .in{position:relative;padding:96px 0 72px;max-width:1180px;margin:0 auto;padding-left:22px;padding-right:22px}
.kicker{display:inline-block;font-size:13px;letter-spacing:.35em;color:#7fd8cd;border:1px solid rgba(127,216,205,.4);padding:5px 14px;border-radius:2px;margin-bottom:26px}
h1{font-size:clamp(26px,4.2vw,44px);font-weight:700;line-height:1.42;letter-spacing:.02em}
h1 em{font-style:normal;color:#5fd6c6}
h1 .lt{color:#f2b263}
.hero p.lead{margin-top:20px;font-size:16px;color:#b8c9d6;max-width:760px}
.hero .cta{margin-top:34px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 30px;border-radius:3px;font-size:15px;letter-spacing:.06em;transition:.2s}
.btn.p{background:linear-gradient(135deg,#12b5a6,#0b7f72);color:#fff;box-shadow:0 8px 24px rgba(14,158,142,.35)}
.btn.p:hover{transform:translateY(-2px)}
.btn.o{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn.o:hover{background:rgba(255,255,255,.1)}
.hero .dual{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:860px}
.dcard{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);border-radius:6px;padding:20px 24px}
.dcard h3{font-size:16px;color:#cfe6e2;font-weight:600;margin-bottom:6px}
.dcard b{font-size:30px;font-weight:700;color:#5fd6c6}
.dcard.lt b{color:#f2b263}
.dcard span{font-size:13px;color:#93a7b6;display:block;margin-top:2px}
/* ---------- page hero (sub pages) ---------- */
.phero{position:relative;color:#fff;padding:74px 0 62px;background:
 radial-gradient(900px 420px at 88% -20%,rgba(14,158,142,.34),transparent 62%),
 radial-gradient(700px 380px at 4% 120%,rgba(224,138,46,.14),transparent 58%),
 linear-gradient(160deg,#0a1c2e,#0f2c47 60%,#0b2438)}
.phero .crumb{font-size:12.5px;color:#7f95a8;letter-spacing:.05em;margin-bottom:18px}
.phero .crumb a:hover{color:#5fd6c6}
.phero .crumb i{font-style:normal;margin:0 7px;color:#4d6274}
.phero h1{font-size:clamp(23px,3.3vw,36px);max-width:960px}
.phero p{margin-top:16px;color:#b8c9d6;font-size:15.5px;max-width:820px}
.phero .tags{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap}
.phero .tags span{font-size:12.5px;color:#9fe3d9;border:1px solid rgba(127,216,205,.35);border-radius:2px;padding:4px 12px}
/* ---------- sections ---------- */
section{padding:84px 0}
.sec-h{text-align:center;margin-bottom:52px}
.sec-h .en{font-size:12px;letter-spacing:.4em;color:var(--teal);text-transform:uppercase}
.sec-h h2{font-size:clamp(22px,3vw,32px);margin-top:10px;color:var(--navy)}
.sec-h p{color:var(--mut);margin-top:10px;font-size:15px}
.sec-h.l{text-align:left}
/* data band */
.band{background:var(--navy);color:#fff;padding:56px 0}
.band .g{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.band .it b{display:block;font-size:clamp(24px,2.6vw,36px);color:#5fd6c6;font-weight:700}
.band .it.lt b{color:#f2b263}
.band .it span{font-size:13px;color:#9db1c2;display:block;margin-top:8px}
.band .it i{display:block;font-style:normal;font-size:12px;color:#5d7186;margin-top:2px}
/* two lines */
.lines{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.lcard{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.lcard:hover{box-shadow:0 18px 44px rgba(10,28,46,.12);transform:translateY(-4px)}
.lcard .vis{height:190px;position:relative;overflow:hidden}
.lcard .vis .tag{position:absolute;left:18px;top:18px;background:rgba(10,28,46,.82);color:#fff;font-size:13px;padding:5px 12px;border-radius:2px;letter-spacing:.1em}
.lcard .bd{padding:26px 28px 30px}
.lcard h3{font-size:20px;color:var(--navy);margin-bottom:12px}
.lcard ul{list-style:none;margin-bottom:18px}
.lcard li{font-size:14px;color:var(--mut);padding:5px 0 5px 18px;position:relative}
.lcard li::before{content:"";position:absolute;left:0;top:14px;width:7px;height:7px;border-radius:50%;background:var(--teal)}
.lcard.a li::before{background:var(--teal)}
.lcard.b li::before{background:var(--amber)}
.lcard .more{font-size:14px;color:var(--teal-d);font-weight:600}
.vis-a{background:linear-gradient(135deg,#0f2c47,#12b5a6)}
.vis-b{background:linear-gradient(135deg,#3a2410,#e08a2e)}
/* industries */
.ind{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.icard{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:26px 22px;transition:.22s;position:relative;display:block}
.icard:hover{border-color:var(--teal);box-shadow:0 12px 30px rgba(14,158,142,.12);transform:translateY(-3px)}
.icard .no{font-size:12px;color:#b8c4cf;letter-spacing:.2em}
.icard h3{font-size:17px;color:var(--navy);margin:8px 0 8px}
.icard p{font-size:13px;color:var(--mut)}
/* products */
.prod{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.pgroup h3.gt{font-size:18px;color:var(--navy);border-left:4px solid var(--teal);padding-left:12px;margin-bottom:18px}
.pgroup.b h3.gt{border-color:var(--amber)}
.pitem{display:flex;gap:18px;background:var(--white);border:1px solid var(--line);border-radius:6px;padding:16px;margin-bottom:14px;align-items:center;transition:.2s}
.pitem:hover{box-shadow:0 10px 26px rgba(10,28,46,.1)}
.pitem .ph{width:132px;height:92px;border-radius:4px;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;letter-spacing:.15em;overflow:hidden}
.pitem .ph img{width:100%;height:100%;object-fit:contain;background:#fff}
.ph-a{background:linear-gradient(135deg,#17324d,#12b5a6)}
.ph-b{background:linear-gradient(135deg,#4a2c10,#e08a2e)}
.pitem h4{font-size:15px;color:var(--ink)}
.pitem p{font-size:12.5px;color:var(--mut);margin-top:3px}
/* service model */
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:44px}
.scard{background:var(--navy);color:#fff;border-radius:8px;padding:32px 28px;position:relative;overflow:hidden}
.scard::after{content:attr(data-k);position:absolute;right:14px;bottom:2px;font-size:74px;font-weight:800;color:rgba(255,255,255,.06)}
.scard h3{font-size:19px;color:#5fd6c6;margin-bottom:10px}
.scard p{font-size:13.5px;color:#b8c9d6}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;text-align:center}
.fstep{position:relative;padding:0 14px}
.fstep b{display:flex;width:44px;height:44px;border-radius:50%;background:var(--teal);color:#fff;align-items:center;justify-content:center;margin:0 auto 12px;font-size:17px}
.fstep h4{font-size:15px;color:var(--navy)}
.fstep p{font-size:12.5px;color:var(--mut);margin-top:6px}
.fstep:not(:last-child)::after{content:"";position:absolute;top:22px;left:calc(50% + 32px);width:calc(100% - 64px);height:1px;background:var(--line)}
/* cases */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ccard{background:var(--white);border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.22s;display:block}
.ccard:hover{box-shadow:0 14px 34px rgba(10,28,46,.12);transform:translateY(-3px)}
.ccard .cv{height:150px}
.cv1{background:linear-gradient(135deg,#17324d,#1d6f68)}
.cv2{background:linear-gradient(135deg,#123a2c,#0e9e8e)}
.cv3{background:linear-gradient(135deg,#3a2410,#c07a2e)}
.ccard .bd{padding:20px 22px 24px}
.ccard h4{font-size:15.5px;color:var(--navy)}
.ccard p{font-size:13px;color:var(--mut);margin-top:8px}
.ccard .tag{display:inline-block;font-size:11.5px;color:var(--teal-d);background:#e7f6f4;border-radius:2px;padding:2px 8px;margin-top:12px}
/* news */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ncard{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:24px 24px 20px;display:block}
.ncard time{font-size:12px;color:#9aa8b5}
.ncard h4{font-size:15px;color:var(--ink);margin:10px 0;line-height:1.6}
.ncard:hover h4{color:var(--teal-d)}
/* cta */
.cta2{background:linear-gradient(135deg,#0b7f72,#12b5a6);color:#fff;text-align:center;border-radius:10px;padding:56px 30px}
.cta2 h2{font-size:clamp(20px,2.6vw,28px)}
.cta2 p{color:#d7f2ee;margin:12px 0 26px;font-size:15px}
.cta2 .btn{background:#fff;color:var(--teal-d);font-weight:700}
/* footer */
.ft{background:var(--navy);color:#9db1c2;padding:60px 0 30px;font-size:13.5px}
.ft .g{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px}
.ft h5{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.ft a{display:block;padding:4px 0;color:#9db1c2}
.ft a:hover{color:#5fd6c6}
.ft .bt{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:22px;text-align:center;font-size:12px;color:#5d7186}
.ft .tel2 b{display:block;font-size:20px;color:#5fd6c6;margin-top:4px}
/* ---------- article / detail body ---------- */
.doc{background:#fff;border:1px solid var(--line);border-radius:8px;padding:44px 48px}
.doc h2{font-size:22px;color:var(--navy);margin:38px 0 14px;padding-left:13px;border-left:4px solid var(--teal);line-height:1.4}
.doc h2:first-child{margin-top:0}
.doc h3{font-size:17px;color:var(--navy);margin:26px 0 10px}
.doc p{font-size:15.5px;color:#2c3e4f;margin:12px 0}
.doc ul,.doc ol{margin:12px 0 12px 22px}
.doc li{font-size:15px;color:#2c3e4f;margin:7px 0}
.doc b{color:var(--navy)}
.doc .lead2{font-size:16.5px;color:#3a4d5e;background:#f2f8f7;border-left:3px solid var(--teal);padding:16px 20px;border-radius:0 4px 4px 0;margin-bottom:26px}
.doc .note{font-size:13.5px;color:var(--mut);background:#fafbfc;border:1px dashed var(--line);padding:14px 18px;border-radius:4px;margin-top:26px}
/* spec table */
.spec{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.spec th,.spec td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.spec th{background:#f2f6f9;color:var(--navy);font-weight:600;white-space:nowrap}
.spec tr:nth-child(even) td{background:#fcfdfe}
.spec td b{color:var(--teal-d)}
.tblwrap{overflow-x:auto}
/* generic grids */
.g2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.kbox{background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 28px}
.kbox h3{font-size:17px;color:var(--navy);margin-bottom:10px}
.kbox p{font-size:14px;color:var(--mut)}
.kbox .num{font-size:28px;font-weight:700;color:var(--teal-d);display:block;margin-bottom:4px}
.pain{background:#fff;border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:0 6px 6px 0;padding:18px 22px;margin-bottom:14px}
.pain h4{font-size:15.5px;color:var(--navy)}
.pain p{font-size:13.5px;color:var(--mut);margin-top:5px}
/* contact */
.cgrid{display:grid;grid-template-columns:1.1fr 1fr;gap:28px}
.cbox{background:#fff;border:1px solid var(--line);border-radius:8px;padding:34px 36px}
.cbox h3{font-size:18px;color:var(--navy);margin-bottom:18px}
.crow{display:flex;gap:16px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px}
.crow:last-child{border:0}
.crow span{width:78px;color:var(--mut);font-size:13.5px;flex:none;padding-top:2px}
.crow b{color:var(--navy);font-size:16px}
.crow em{font-style:normal;display:block;font-size:12.5px;color:var(--teal-d)}
.mapbox{background:linear-gradient(135deg,#eef4f8,#e3eef0);border:1px solid var(--line);border-radius:8px;min-height:320px;display:flex;align-items:center;justify-content:center;color:var(--mut);font-size:14px;text-align:center;padding:30px}
/* mobile fix bar */
.fixbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:98;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 18px rgba(10,28,46,.08)}
.fixbar a{flex:1;text-align:center;padding:13px 6px;font-size:14px;border-right:1px solid var(--line)}
.fixbar a:last-child{border:0;background:var(--teal);color:#fff;font-weight:600}
/* reveal */
.rv{opacity:0;transform:translateY(26px);transition:.7s ease}
.rv.on{opacity:1;transform:none}
/* responsive */
@media(max-width:960px){
  .hd nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 22px;border-bottom:1px solid var(--line);gap:4px}
  #navT:checked~nav{display:flex}
  .burger{display:block;margin-left:auto}
  .hd .tel{display:none}
  .hero .dual,.lines,.prod,.cases,.news,.svc,.ft .g,.g2,.g3,.cgrid{grid-template-columns:1fr}
  .ind{grid-template-columns:1fr 1fr}
  .band .g{grid-template-columns:1fr 1fr;gap:34px}
  .flow{grid-template-columns:1fr 1fr;gap:26px}
  .fstep::after{display:none}
  section{padding:58px 0}
  .doc{padding:26px 20px}
  .doc h2{font-size:19px}
  .phero{padding:52px 0 44px}
  .fixbar{display:flex}
  body{padding-bottom:52px}
}
/* product hero image */
.pimg{width:100%;max-height:380px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:6px;padding:12px}
@media(max-width:960px){.pimg{max-height:240px}}
/* 站头 LOGO 尺寸微调（横版长宽比 7.25:1） */
.hd img.logo{height:42px;width:auto}
@media(max-width:960px){.hd img.logo{height:34px}.hd .bar{height:64px}}