:root{
  --navy:#16304e; --navy2:#0e2138; --gold:#b8893c; --ink:#1d2733;
  --gray:#67717e; --line:#e4e8ee; --bg:#f7f8fa; --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--white);line-height:1.75;font-size:16px}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{width:min(1160px,92vw);margin:0 auto}
.narrow{width:min(860px,92vw);margin:0 auto}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.mark{width:34px;height:34px;border-radius:8px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px;letter-spacing:.5px}
.lname{font-size:17px;font-weight:700;letter-spacing:.5px}
.lsub{font-size:11px;color:var(--gray);letter-spacing:2px}
nav ul{display:flex;gap:26px;list-style:none;font-size:15px}
nav a{color:#3c4756;padding:6px 0;border-bottom:2px solid transparent}
nav a:hover,nav a.on{color:var(--navy);border-bottom-color:var(--gold)}
.navtel{font-size:15px;font-weight:700;color:var(--navy)}
.burger{display:none;font-size:22px;background:none;border:0;color:var(--navy)}

/* hero */
.hero{background:linear-gradient(135deg,#16304e 0%,#1d3f63 62%,#22496f 100%);color:#fff;padding:88px 0 76px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(184,137,60,.22),transparent 68%)}
.hero .kicker{color:#cbb287;letter-spacing:3px;font-size:13px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:#e7c98f}
.hero p{margin-top:22px;max-width:620px;color:#c3cfdd;font-size:17px}
.btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 30px;border-radius:6px;font-size:15px;font-weight:600;transition:.2s}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:#a5772f}
.btn-ghost{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:-38px;background:#fff;box-shadow:0 12px 30px rgba(22,48,78,.07);position:relative;z-index:2}
.stat{padding:26px 22px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:30px;color:var(--navy);letter-spacing:.5px}
.stat b small{font-size:15px;font-weight:600;margin-left:2px}
.stat span{font-size:13px;color:var(--gray)}

/* section */
section{padding:78px 0}
.sec-head{margin-bottom:40px}
.sec-head .tag{color:var(--gold);font-size:13px;letter-spacing:3px;font-weight:600}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin-top:10px;letter-spacing:.5px}
.sec-head p{color:var(--gray);margin-top:12px;max-width:640px}
.gray-bg{background:var(--bg)}

/* product cards */
.pgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.pcard{border:1px solid var(--line);border-radius:10px;padding:28px;background:#fff;transition:.2s;display:flex;flex-direction:column}
.pcard:hover{border-color:#c8d3e0;box-shadow:0 14px 34px rgba(22,48,78,.09);transform:translateY(-2px)}
.pcard h3{font-size:20px;letter-spacing:.5px}
.pcard .en{font-size:11px;color:#9aa4b1;letter-spacing:2px;margin-top:6px;text-transform:uppercase}
.pcard p{color:var(--gray);font-size:15px;margin-top:16px;flex:1}
.spec{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.spec i{font-style:normal;font-size:12px;color:var(--navy);background:#eef2f7;border-radius:4px;padding:5px 10px}
.more{margin-top:20px;font-size:14px;color:var(--gold);font-weight:600}

/* process */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;counter-increment:s}
.step:before{content:"0" counter(s);display:block;font-size:13px;color:var(--gold);font-weight:700;letter-spacing:2px;margin-bottom:12px}
.step b{display:block;font-size:16px;margin-bottom:8px}
.step p{font-size:14px;color:var(--gray)}

/* list */
.list{border-top:1px solid var(--line)}
.item{display:flex;gap:26px;padding:26px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.item .date{font-size:13px;color:#9aa4b1;min-width:96px;letter-spacing:.5px}
.item h3{font-size:17px;font-weight:600}
.item p{color:var(--gray);font-size:14px;margin-top:8px}
.item:hover h3{color:var(--navy)}

/* contact */
.cta{background:var(--navy);color:#fff;padding:64px 0}
.cta h2{font-size:clamp(22px,3vw,32px)}
.cta p{color:#b9c6d5;margin-top:12px}
.cgrid{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;margin-top:34px}
.cline{font-size:15px;color:#dbe3ec;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.cline b{color:#8fa3ba;font-weight:500;margin-right:14px;font-size:13px}
.qrcard{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:24px}
.qrcard h4{font-size:15px;margin-bottom:14px;color:#fff}
.qrcard p{font-size:13.5px;color:#c3cfdd;line-height:2}

/* footer */
footer{background:#0d1a2b;color:#8b9aab;padding:36px 0;font-size:13px}
.foot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
.foot a{color:#8b9aab}
.foot a:hover{color:#cbb287}

/* mobile bar */
.mobilebar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:60;background:#fff;border-top:1px solid var(--line);padding:8px 12px;gap:10px}
.mobilebar a{flex:1;text-align:center;padding:11px 0;border-radius:6px;font-size:15px;font-weight:600}
.mobilebar .call{background:var(--navy);color:#fff}
.mobilebar a:not(.call){border:1px solid var(--line);color:var(--navy)}

@media(max-width:1100px){.navtel{display:none}}
@media(max-width:980px){
  nav ul{display:none}
  body.navopen nav ul{display:flex;flex-direction:column;position:absolute;left:0;right:0;top:72px;
    background:#fff;border-bottom:1px solid var(--line);padding:6px 4vw 10px;gap:0;box-shadow:0 14px 24px rgba(22,48,78,.08)}
  body.navopen nav ul li{border-bottom:1px solid var(--line)}
  body.navopen nav ul li:last-child{border-bottom:0}
  body.navopen nav ul a{display:block;padding:15px 4px;border-bottom:0}
  .burger{display:block}
}
@media(max-width:820px){
  nav ul{display:none}
  .burger{display:block}
  .navtel{display:none}
  .stats{grid-template-columns:1fr 1fr;margin-top:-20px}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0}
  section{padding:52px 0}
  .hero{padding:60px 0 54px}
  .cgrid{grid-template-columns:1fr}
  .item{flex-direction:column;gap:8px}
  .mobilebar{display:flex}
  body{padding-bottom:64px}
}