:root{
--navy:#082a45;
--blue:#0874c9;
--red:#d92d20;
--green:#20b964;
--soft:#f4f8fb;
--line:#dfe8ef;
--muted:#637486;
--shadow:0 12px 32px rgba(6,42,69,.08)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:#142536;line-height:1.7;background:#fff}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1280px;margin:auto;padding:0 24px}
.topbar{background:#061f33;color:#d7e6f2;font-size:13px}
.topinner{height:36px;display:flex;align-items:center;justify-content:space-between}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav{height:82px;display:flex;align-items:center;gap:24px}
.brand{font-size:34px;font-weight:900;color:var(--red)}
.brand small{display:block;font-size:10px;color:#596b7a;margin-top:-9px;letter-spacing:2px}
.navlinks{display:flex;margin-left:auto;gap:22px;font-weight:700}
.lang{background:var(--soft);padding:8px 13px;border-radius:8px}
.quote,.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;padding:11px 16px;border-radius:9px;font-weight:800}
.btn.green{background:var(--green)}
.btn.white{background:#fff;color:var(--blue);border:1px solid var(--line)}
.menu-toggle{display:none;border:0;background:var(--soft);font-size:24px;padding:6px 10px;border-radius:8px}
.hero{background:linear-gradient(115deg,#061f34,#0c73af);color:#fff;padding:80px 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
.hero h1{font-size:54px;line-height:1.08;margin:10px 0 18px}
.hero p{font-size:19px;color:#d6e8f5}
.hero-img{background:#fff;padding:24px;border-radius:20px;box-shadow:0 30px 65px rgba(0,0,0,.25)}
.hero-img img{height:380px;width:100%;object-fit:contain}
.section{padding:72px 0}
.soft{background:var(--soft)}
.heading{text-align:center;max-width:760px;margin:0 auto 36px}
.heading small{color:var(--blue);font-weight:900;letter-spacing:1.5px}
.heading h2{font-size:38px;color:var(--navy);margin:8px 0}
.heading p{color:var(--muted)}
.catgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow)}
.cat img{width:100%;height:130px;object-fit:contain;margin-bottom:10px}
.cat strong{font-size:18px;color:var(--navy)}
.cat span{display:block;color:var(--muted);font-size:13px}
.productgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.pic{height:250px;padding:12px;border-bottom:1px solid var(--line)}
.pic img{width:100%;height:100%;object-fit:contain}
.cardbody{padding:16px}
.tag{display:inline-block;background:#eaf5ff;color:#0864a4;font-size:11px;font-weight:800;border-radius:999px;padding:4px 8px}
.card h3{color:var(--navy);font-size:17px;line-height:1.4;margin:9px 0}
.record{color:#82909d;font-size:12px;margin-bottom:12px}
.pagehero{padding:55px 0;background:linear-gradient(110deg,#082b48,#0a78bd);color:#fff}
.pagehero h1{font-size:42px;margin:0}
.detail{padding:50px 0}
.detailtop{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.mainpic{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}
.mainpic img{width:100%;height:500px;object-fit:contain}
.productinfo h1{font-size:38px;line-height:1.2;color:var(--navy)}
.buttons{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}
.notice{background:#fff8e7;border:1px solid #edcb7c;color:#715718;border-radius:10px;padding:14px}
.techblocks{display:grid;gap:28px;margin-top:48px}
.tech{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:var(--shadow)}
.techtitle{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:20px}
.techtitle span{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:900}
.techtitle h2{margin:0;color:var(--navy)}
.textbody p{margin:0 0 11px}
.spec-text{white-space:pre-line;background:#f7fafc;border-radius:10px;padding:16px}
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.media-card{border:1px solid var(--line);border-radius:12px;padding:9px;background:#fff}
.media-card img{width:100%;height:300px;object-fit:contain}
.filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:24px}
.filter{background:#fff;border:1px solid var(--line);padding:8px 13px;border-radius:999px;font-weight:700}
.filter.active{background:var(--blue);color:#fff}
.newsgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.case-text{max-width:900px;margin:0 auto 30px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.case-grid img{width:100%;height:300px;object-fit:contain;border:1px solid var(--line);border-radius:12px;padding:8px}
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:45px}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}
.footer{background:#061c2e;color:#bfd2df;padding:52px 0 24px}
.footergrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.5fr;gap:30px}
.footer h4{color:#fff}
.footer a{display:block;margin:6px 0}
.copyright{border-top:1px solid #17394f;margin-top:30px;padding-top:18px;font-size:13px}
.wa{position:fixed;right:22px;bottom:22px;background:#25d366;color:#fff;padding:12px 16px;border-radius:999px;font-weight:900;z-index:60}
.quoteform{display:grid;gap:11px}
.quoteform input,.quoteform textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;font:inherit}
.quoteform textarea{min-height:120px}
@media(max-width:980px){
.navlinks{display:none}
.menu-toggle{display:block;margin-left:auto}
.nav>.lang,.nav>.quote{display:none}
.mobile-open .navlinks{display:flex;position:absolute;left:0;right:0;top:82px;background:#fff;padding:20px;flex-direction:column;box-shadow:var(--shadow)}
.hero-grid,.detailtop,.twocol{grid-template-columns:1fr}
.productgrid,.catgrid{grid-template-columns:repeat(2,1fr)}
.media-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
.newsgrid{grid-template-columns:1fr}
}
@media(max-width:600px){
.wrap{padding:0 16px}
.hero h1{font-size:36px}
.pagehero h1,.productinfo h1{font-size:30px}
.productgrid,.catgrid,.media-grid,.case-grid{grid-template-columns:1fr}
.mainpic img{height:340px}
.footergrid{grid-template-columns:1fr}
}