:root{
  --blue:#0d3f8c;--blue2:#1a56b0;--cyan:#2aa8e0;--ink:#0e1a2b;--ink2:#33445c;
  --muted:#63758c;--line:#e4eaf3;--bg:#f4f7fc;--white:#fff;--max:1180px;
  --shadow:0 10px 30px rgba(13,63,140,.09);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);background:var(--white);
  font:16px/1.65 "PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.22;letter-spacing:-.01em}
p{margin:0}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
body.lang-en .zh{display:none}
body:not(.lang-en) .en span,body:not(.lang-en) .en{display:none}
body.lang-en .en{display:inline}
body.lang-en p.en{display:block}
p.en{display:none;margin:0 0 6px;font-size:12px;letter-spacing:.16em;color:var(--blue2);font-weight:700}

/* header */
.hd{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:.3s}
.hd.stuck{border-color:var(--line);box-shadow:0 6px 24px rgba(13,63,140,.07)}
.hd-in{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px}
.brand svg{width:34px;height:34px;flex:none}
.brand strong{display:block;font-size:16px;letter-spacing:.02em}
.brand em{display:block;font-style:normal;font-size:9.5px;letter-spacing:.13em;color:var(--muted)}
.nav{display:flex;gap:22px;margin-left:auto;font-size:14.5px;color:var(--ink2)}
.nav a{padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{color:var(--blue);border-color:var(--cyan)}
.hd-act{display:flex;align-items:center;gap:10px}
.lang{width:44px;height:30px;border:1px solid var(--line);border-radius:8px;background:#fff;
  color:var(--blue);font:700 12px/1 inherit;cursor:pointer}
.lang:hover{border-color:var(--blue2)}
.tel{display:inline-flex;align-items:center;gap:7px;background:var(--blue);color:#fff;
  padding:9px 14px;border-radius:999px;font-size:13.5px;font-weight:600;white-space:nowrap}
.tel svg{width:15px;height:15px;fill:currentColor}
.tel:hover{background:var(--blue2)}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;min-height:520px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.04)}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,29,66,.94) 0%,rgba(9,44,98,.86) 45%,rgba(13,63,140,.55) 100%)}
.hero-in{position:relative;z-index:2;padding:64px 0 56px;width:min(var(--max),calc(100% - 40px))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.1em;
  color:#bfe0f5;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  padding:5px 12px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:clamp(30px,4.6vw,52px);font-weight:800}
.hero h1 span{color:#7fd0f4}
.hero-sub{margin-top:16px;max-width:620px;color:#d5e6f7;font-size:clamp(14px,1.5vw,17px)}
.hero-cta{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;
  font-size:14.5px;font-weight:700;border:1px solid transparent;cursor:pointer;transition:.2s}
.btn i{font-style:normal}
.btn.primary{background:var(--cyan);color:#04263c}
.btn.primary:hover{background:#4dbcEC}
.btn.ghost{border-color:rgba(255,255,255,.42);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;list-style:none;margin:38px 0 0;padding:0;
  background:rgba(255,255,255,.16);border-radius:14px;overflow:hidden}
.kpi li{background:rgba(8,38,84,.55);padding:16px 14px}
.kpi b{display:block;font-size:clamp(19px,2.3vw,26px);letter-spacing:-.02em}
.kpi sup{font-size:.55em;vertical-align:super}
.kpi span{font-size:12px;color:#b9d3ea}

/* sections */
.sec{padding:clamp(46px,6vw,80px) 0}
.sec.alt{background:var(--bg)}
.sec-head{max-width:760px;margin-bottom:30px}
.sec-head h2{font-size:clamp(23px,3vw,34px)}
.sec-head .desc{margin-top:10px;color:var(--muted);font-size:15px}
.note{margin-top:22px;font-size:13px;color:var(--muted)}

/* machinery cards */
.mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.mcard{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;
  box-shadow:var(--shadow);transition:.25s}
.mcard:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(13,63,140,.14)}
.mcard-pics{display:flex;gap:7px;align-items:center;justify-content:center;
  background:linear-gradient(180deg,#fbfdff,#eef4fb);padding:14px 12px;min-height:172px;overflow:hidden}
.mcard-pics img{max-height:148px;max-width:100%;width:auto;height:auto;object-fit:contain;
  flex:0 1 auto;min-width:0}
.mcard-body{padding:14px 16px 18px;border-top:1px solid var(--line)}
.mcard-body h3{font-size:15.5px;margin-bottom:10px}
.specs{list-style:none;margin:0;padding:0;font-size:13.5px}
.specs li{display:flex;justify-content:space-between;gap:10px;padding:4px 0;border-bottom:1px dashed var(--line)}
.specs li:last-child{border:0}
.specs span{color:var(--muted)}
.specs b{font-weight:700}

/* catalog blocks */
.cats{display:grid;gap:18px}
.cat{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.cat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:15px 18px;border-bottom:1px solid var(--line);background:linear-gradient(90deg,#f7faff,#fff)}
.cat-head h3{font-size:16.5px;color:var(--blue)}
.cat-count{font-size:12px;color:var(--muted);background:var(--bg);padding:3px 9px;border-radius:999px}
.cat-body{display:grid;grid-template-columns:1fr 210px;gap:18px;padding:16px 18px 18px;align-items:center}
.cat-table{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:460px}
th{ text-align:left;font-weight:600;color:var(--muted);font-size:12px;padding:6px 8px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:8px;border-bottom:1px dashed var(--line)}
tr:last-child td{border:0}
td:first-child{font-weight:600;white-space:nowrap}
.cat-pic{background:linear-gradient(180deg,#fbfdff,#eef4fb);border-radius:12px;padding:10px;
  display:flex;align-items:center;justify-content:center;min-height:150px}
.cat-pic img{max-height:140px;width:auto;object-fit:contain}

/* elements */
.els{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
.el{border:1px solid var(--line);border-radius:14px;background:#fff;padding:10px;cursor:pointer;
  text-align:center;transition:.2s;font:inherit}
.el:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#cfe0f5}
.el img{height:120px;width:100%;object-fit:contain;margin-bottom:8px}
.el b{display:block;font-size:13px;line-height:1.3}
.el b span{display:block}
.el b .en{font-size:11px;color:var(--muted);margin-top:2px}

/* about */
.about{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(24px,4vw,56px);align-items:center}
.about-pic{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.about-pic img{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.94);
  border-radius:12px;padding:8px 14px;font-size:12px;color:var(--muted)}
.badge b{display:block;font-size:22px;color:var(--blue);line-height:1.1}
.about-txt h2{font-size:clamp(22px,2.7vw,30px);margin-bottom:14px}
.about-txt p{color:var(--ink2);font-size:15px;margin-bottom:12px}
.adv{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.adv li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  font-size:12.5px;color:var(--muted)}
.adv b{display:block;font-size:14px;color:var(--ink);margin-bottom:2px}

/* contact */
.contact{background:linear-gradient(180deg,#0b2f68,#0d3f8c);color:#fff}
.contact .en{color:#8fd8f7}
.contact h2{font-size:clamp(24px,3vw,32px)}
.contact .desc{color:#c3d8ef;margin:10px 0 22px}
.contact-in{display:grid;grid-template-columns:1fr 260px;gap:clamp(24px,5vw,60px);align-items:center}
.clist{list-style:none;margin:0;padding:0}
.clist li{display:flex;gap:14px;padding:12px 0;border-top:1px solid rgba(255,255,255,.14)}
.ico{flex:none;font-size:11px;letter-spacing:.08em;color:#8fd8f7;width:46px;padding-top:3px}
.clist b{font-weight:600;font-size:15px;display:block}
.clist b a{color:#fff;border-bottom:1px solid rgba(255,255,255,.35)}
.clist .wx{font-size:11.5px;color:#8fd8f7;border:1px solid rgba(143,216,247,.5);
  border-radius:999px;padding:1px 7px;margin-left:6px;border-bottom:1px solid rgba(143,216,247,.5)}
.cdl{margin-top:24px}
.cdl .btn.primary{background:#fff;color:var(--blue)}
.qrbox{background:rgba(255,255,255,.96);border-radius:18px;padding:16px;text-align:center;color:var(--ink)}
.qr{background:#fff;border-radius:12px;padding:8px;aspect-ratio:1;display:flex;align-items:center;justify-content:center}
.qr img{width:100%;height:auto;border-radius:6px}
.qr-ph{text-align:center;color:var(--muted);border:2px dashed #cfdcee;border-radius:10px;
  width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}
.qr-ph b{font-size:15px;color:var(--blue)}
.qr-ph small{font-size:11px}
.qrbox p{margin-top:10px;font-size:13px;color:var(--muted)}

/* mobile action bar */
.mbar{display:none}
section[id]{scroll-margin-top:72px}

/* footer */
.ft{background:#071f47;color:#9fb6d2;padding:34px 0 26px;font-size:13px}
.ft-top{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-bottom:18px;
  border-bottom:1px solid rgba(255,255,255,.1)}
.ft strong{color:#fff;font-size:15px;display:block}
.ft em{font-style:normal;font-size:11px;letter-spacing:.1em}
.ft nav{display:flex;gap:18px;flex-wrap:wrap}
.ft nav a:hover{color:#fff}
.copy{margin-top:16px;font-size:12px;color:#7791b1}

/* lightbox */
.lb{position:fixed;inset:0;z-index:90;background:rgba(6,20,40,.92);display:none;
  align-items:center;justify-content:center;flex-direction:column;padding:24px}
.lb.on{display:flex}
.lb img{max-width:min(92vw,680px);max-height:76vh;object-fit:contain;background:#fff;border-radius:12px}
.lb p{color:#cfe2f5;margin-top:12px;font-size:14px}
.lb-x{position:absolute;top:16px;right:20px;width:40px;height:40px;border-radius:50%;
  border:1px solid rgba(255,255,255,.3);background:transparent;color:#fff;font-size:22px;cursor:pointer}

@media (max-width:920px){
  .nav{display:none}
  .cat-body{grid-template-columns:1fr}
  .cat-pic{display:none}
  .about{grid-template-columns:1fr}
  .contact-in{grid-template-columns:1fr}
  .qrbox{max-width:260px}
  .mbar{display:grid;grid-template-columns:repeat(3,1fr);position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);
    box-shadow:0 -6px 20px rgba(13,63,140,.08);padding-bottom:env(safe-area-inset-bottom)}
  .mbar a,.mbar button{display:flex;align-items:center;justify-content:center;gap:6px;height:52px;
    font:600 14px/1 inherit;color:var(--blue);background:none;border:0;cursor:pointer}
  .mbar svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;fill:currentColor}
  .mbar a:first-child svg{fill:currentColor;stroke:none}
  .mbar a+a,.mbar button{border-left:1px solid var(--line)}
  body{padding-bottom:52px}
  .ft{padding-bottom:70px}
}
@media (max-width:640px){
  .wrap{width:calc(100% - 32px)}
  .hero{min-height:0}
  .hero-in{padding:44px 0 40px}
  .kpi{grid-template-columns:1fr 1fr;margin-top:28px}
  .mgrid{grid-template-columns:1fr;gap:14px}
  .els{grid-template-columns:1fr 1fr;gap:10px}
  .el img{height:96px}
  .adv{grid-template-columns:1fr}
  .tel span{display:none}
  .tel{padding:9px 11px}
  .sec{padding:44px 0}
  .mcard-pics img{height:128px}
}

.burger{display:none}
/* inner page hero */
.phero{background:linear-gradient(120deg,#0a2f66,#134f9e);color:#fff;padding:52px 0 46px}
.phero .crumb{font-size:12.5px;color:#9fc4e6;margin-bottom:12px;letter-spacing:.04em}
.phero .crumb a{color:#cfe4f7;border-bottom:1px solid rgba(207,228,247,.35)}
.phero h1{font-size:clamp(26px,3.6vw,40px)}
.phero p{color:#c5dcf2;margin-top:10px;font-size:15px;max-width:720px}
.nav a.on{color:var(--blue);border-color:var(--cyan)}

/* home: category cards */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.cat-card{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;
  transition:.22s;box-shadow:var(--shadow)}
.cat-card:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(13,63,140,.14);border-color:#cfe0f5}
.cc-pic{height:110px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,#fbfdff,#eef4fb);border-radius:10px;margin-bottom:10px}
.cc-pic img{max-height:96px;width:auto}
.cc-empty b{color:var(--blue);font-size:20px;letter-spacing:.1em}
.cat-card h3{font-size:15px}
.cat-card p{font-size:12.5px;color:var(--muted);margin-top:3px}

/* home: why */
.why{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.why>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}
.why b{font-size:12px;color:var(--cyan);letter-spacing:.1em}
.why h3{font-size:16px;margin:6px 0 6px}
.why p{font-size:13.5px;color:var(--muted)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.stats>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center}
.stats b{display:block;font-size:clamp(22px,2.6vw,30px);color:var(--blue)}
.stats span{font-size:12.5px;color:var(--muted)}

/* fields */
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.field{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;font-size:14px}
.field b{display:block;font-size:11px;color:var(--cyan);margin-bottom:4px}

/* cta band */
.cta-band{background:linear-gradient(120deg,#0a2f66,#134f9e);color:#fff;padding:44px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.6vw,27px)}
.cta-band p{color:#c5dcf2;margin-top:6px;font-size:14px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn.line{border:1px solid var(--blue2);color:var(--blue);background:#fff}
.btn.line:hover{background:#eef4fb}
.more{margin-top:22px}

/* contact page */
.contact-page{display:grid;grid-template-columns:1.35fr .8fr;gap:clamp(24px,4vw,56px);align-items:start}
.cinfo h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:18px}
.clist2{list-style:none;margin:0;padding:0}
.clist2 li{display:flex;gap:16px;padding:16px 0;border-top:1px solid var(--line)}
.clist2 li:last-child{border-bottom:1px solid var(--line)}
.clist2 .ico{width:70px;color:var(--muted);font-size:11px;letter-spacing:.08em;padding-top:4px}
.clist2 b{display:block;font-size:15.5px;font-weight:600;margin-bottom:3px}
.clist2 b a{color:var(--blue)}
.clist2 em{font-style:normal;font-size:12px;color:var(--muted)}
.clist2 div>a{font-size:13px;color:var(--blue2);border-bottom:1px dashed rgba(26,86,176,.4)}
.cbox{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px;margin-top:24px}
.cbox h3{font-size:15px;margin-bottom:8px}
.cbox p{font-size:13.5px;color:var(--ink2);line-height:1.9}
.qrcard{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;text-align:center;
  box-shadow:var(--shadow);position:sticky;top:80px;max-width:300px;margin-left:auto}
.qrcard .qr{max-width:212px;margin:0 auto}
.qrcard h3{font-size:15px;margin-top:12px}
.qrcard p{font-size:12.5px;color:var(--muted);margin-top:4px}
.qr-sep{height:1px;background:var(--line);margin:18px 0}
.qr-ph b{font-size:14px}

/* process steps */
.steps{margin-top:24px}
.steps h3{font-size:15px;margin-bottom:12px}
.steps ol{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{display:flex;gap:14px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line)}
.steps li:last-child{border:0}
.steps b{flex:none;width:34px;height:34px;border-radius:10px;background:var(--bg);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:12.5px}
.steps span{font-size:14px;color:var(--ink2);padding-top:6px}

@media (max-width:920px){
  .burger{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;
    width:36px;height:34px;border:1px solid var(--line);border-radius:9px;background:#fff;cursor:pointer}
  .burger span{display:block;height:2px;border-radius:2px;background:var(--blue);width:16px;margin:0 auto;transition:.2s}
  .burger.on span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .burger.on span:nth-child(2){opacity:0}
  .burger.on span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .nav{display:none;position:absolute;left:0;right:0;top:64px;background:#fff;flex-direction:column;
    gap:0;padding:4px 20px 12px;border-bottom:1px solid var(--line);
    box-shadow:0 14px 26px rgba(13,63,140,.1);margin:0}
  .nav.open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav a:last-child{border:0}
  .hd-in{position:relative}
  .contact-page{grid-template-columns:1fr}
  .qrcard{position:static;max-width:280px;margin-inline:auto}
  .phero{padding:36px 0 32px}
}
@media (max-width:640px){
  .cat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .cc-pic{height:84px}
  .cc-pic img{max-height:72px}
  .why>div{padding:16px}
  .stats{grid-template-columns:1fr 1fr}
}

.ctools{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:0 0 18px;border-bottom:1px solid var(--line);margin-bottom:22px}
.ctools h2{font-size:clamp(20px,2.6vw,26px)}
.ctools .desc{margin-top:4px;color:var(--muted);font-size:13.5px}
.catalog{display:grid;gap:16px;max-width:780px;margin:0 auto}
.pg{margin:0;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  box-shadow:0 10px 26px rgba(13,63,140,.08)}
.pg img{width:100%;display:block}
.pg figcaption{text-align:center;font-size:12px;color:var(--muted);padding:6px 0}