*{margin:0;padding:0;box-sizing:border-box}
:root{--qf-main:#165DFF;--qf-main-d:#0E42D2;--qf-bg:#F7F8FA;--qf-text:#1D2129;--qf-sub:#4E5969;--qf-line:#E5E6EB;--qf-w:#fff}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--qf-text);background:var(--qf-w);line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}
.qf-wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.qf-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--qf-line)}
.qf-nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.qf-logo{display:flex;align-items:center}
.qf-logo img{height:38px;width:auto}
.qf-menu{display:flex;gap:36px}
.qf-menu a{font-size:15px;color:var(--qf-text);font-weight:500;transition:color .2s}
.qf-menu a:hover,.qf-menu a.qf-on{color:var(--qf-main)}
.qf-act{display:flex;gap:12px;align-items:center}
.qf-btn{display:inline-block;padding:9px 22px;border-radius:6px;font-size:14px;font-weight:500;transition:all .2s;cursor:pointer;border:none}
.qf-btn-p{background:var(--qf-main);color:#fff}
.qf-btn-p:hover{background:var(--qf-main-d)}
.qf-btn-o{border:1px solid var(--qf-main);color:var(--qf-main);background:#fff}
.qf-btn-o:hover{background:#E8F0FF}
.qf-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.qf-burger span{width:24px;height:2px;background:var(--qf-text);display:block}
.qf-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0B1F4D 0%,#165DFF 100%);color:#fff}
.qf-hero-in{position:relative;z-index:2;padding:90px 0 110px}
.qf-hero h1{font-size:44px;line-height:1.3;font-weight:700;margin-bottom:20px}
.qf-hero p{font-size:18px;opacity:.88;max-width:620px;margin-bottom:36px}
.qf-hero .qf-act{display:flex;gap:16px;flex-wrap:wrap}
.qf-hero .qf-btn-o{border-color:rgba(255,255,255,.6);color:#fff}
.qf-hero .qf-btn-o:hover{background:rgba(255,255,255,.12)}
.qf-hero-bg{position:absolute;right:0;top:0;bottom:0;width:55%;opacity:.35;background-size:cover;background-position:center;z-index:1}
.qf-stats{background:#fff;border-bottom:1px solid var(--qf-line)}
.qf-stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:40px 0}
.qf-stat{text-align:center}
.qf-stat b{font-size:36px;color:var(--qf-main);font-weight:700;display:block;line-height:1.2}
.qf-stat span{font-size:14px;color:var(--qf-sub)}
.qf-sec{padding:80px 0}
.qf-sec-g{background:var(--qf-bg)}
.qf-sec-t{text-align:center;margin-bottom:50px}
.qf-sec-t h2{font-size:32px;font-weight:700;margin-bottom:12px}
.qf-sec-t p{font-size:16px;color:var(--qf-sub)}
.qf-grid{display:grid;gap:24px}
.qf-g3{grid-template-columns:repeat(3,1fr)}
.qf-g4{grid-template-columns:repeat(4,1fr)}
.qf-card{background:#fff;border:1px solid var(--qf-line);border-radius:10px;padding:32px;transition:all .25s}
.qf-card:hover{box-shadow:0 8px 24px rgba(22,93,255,.1);transform:translateY(-3px);border-color:var(--qf-main)}
.qf-card .qf-ic{width:52px;height:52px;border-radius:10px;background:#E8F0FF;display:flex;align-items:center;justify-content:center;margin-bottom:18px;font-size:24px;color:var(--qf-main);font-weight:700}
.qf-card h3{font-size:18px;margin-bottom:10px}
.qf-card p{font-size:14px;color:var(--qf-sub);line-height:1.7}
.qf-card .qf-more{display:inline-block;margin-top:14px;color:var(--qf-main);font-size:14px;font-weight:500}
.qf-sol{position:relative;border-radius:10px;overflow:hidden;height:220px;display:flex;align-items:flex-end;color:#fff}
.qf-sol img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.qf-sol .qf-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,77,.1) 0%,rgba(11,31,77,.85) 100%)}
.qf-sol h3{position:relative;z-index:2;padding:20px;font-size:18px;font-weight:600}
.qf-sol p{position:relative;z-index:2;padding:0 20px 20px;font-size:13px;opacity:.85}
.qf-news{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--qf-line);align-items:center}
.qf-news:last-child{border-bottom:none}
.qf-news .qf-thumb{width:180px;height:110px;border-radius:8px;overflow:hidden;flex-shrink:0}
.qf-news .qf-thumb img{width:100%;height:100%;object-fit:cover}
.qf-news .qf-info{flex:1}
.qf-news .qf-info h3{font-size:17px;margin-bottom:6px}
.qf-news .qf-info h3 a:hover{color:var(--qf-main)}
.qf-news .qf-info p{font-size:14px;color:var(--qf-sub);margin-bottom:8px}
.qf-news .qf-info time{font-size:13px;color:#86909C}
.qf-cta{background:linear-gradient(135deg,#0B1F4D,#165DFF);color:#fff;text-align:center;padding:70px 0}
.qf-cta h2{font-size:30px;margin-bottom:14px}
.qf-cta p{opacity:.85;margin-bottom:30px}
.qf-foot{background:#0B1F4D;color:#86909C;padding:60px 0 0;font-size:14px}
.qf-foot-in{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:40px}
.qf-foot h4{color:#fff;font-size:15px;margin-bottom:16px}
.qf-foot ul li{margin-bottom:10px}
.qf-foot a:hover{color:#fff}
.qf-foot-b{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:13px}
.qf-bread{background:var(--qf-bg);padding:16px 0;font-size:14px;color:var(--qf-sub)}
.qf-bread a{color:var(--qf-main)}
.qf-page{padding:60px 0}
.qf-article{max-width:820px;margin:0 auto}
.qf-article h1{font-size:30px;line-height:1.4;margin-bottom:16px}
.qf-article .qf-meta{color:#86909C;font-size:14px;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--qf-line)}
.qf-article .qf-cover{border-radius:10px;overflow:hidden;margin-bottom:28px}
.qf-article .qf-cover img{width:100%}
.qf-article .qf-body{font-size:16px;line-height:1.9;color:var(--qf-text)}
.qf-article .qf-body p{margin-bottom:20px}
.qf-article .qf-body h2{font-size:22px;margin:30px 0 16px}
.qf-article .qf-prev{display:flex;justify-content:space-between;margin-top:50px;padding-top:24px;border-top:1px solid var(--qf-line)}
.qf-prod{display:grid;grid-template-columns:1fr 2fr;gap:0;border:1px solid var(--qf-line);border-radius:10px;overflow:hidden;margin-bottom:24px;background:#fff}
.qf-prod .qf-pimg{min-height:220px;background-size:cover;background-position:center}
.qf-prod .qf-pinfo{padding:32px}
.qf-prod h3{font-size:22px;margin-bottom:10px}
.qf-prod .qf-tag{display:inline-block;background:#E8F0FF;color:var(--qf-main);padding:3px 12px;border-radius:4px;font-size:12px;margin-bottom:14px}
.qf-prod p{color:var(--qf-sub);margin-bottom:16px}
.qf-prod ul{margin-bottom:16px}
.qf-prod ul li{padding:4px 0;font-size:14px;color:var(--qf-sub)}
.qf-prod ul li:before{content:"";display:inline-block;width:6px;height:6px;background:var(--qf-main);border-radius:50%;margin-right:8px;vertical-align:middle}
.qf-404{text-align:center;padding:100px 0}
.qf-404 b{font-size:120px;color:var(--qf-main);display:block;line-height:1}
.qf-404 p{font-size:18px;color:var(--qf-sub);margin:20px 0 30px}
.qf-form{max-width:600px}
.qf-form .qf-fi{margin-bottom:20px}
.qf-form label{display:block;margin-bottom:6px;font-size:14px;font-weight:500}
.qf-form input,.qf-form textarea{width:100%;padding:10px 14px;border:1px solid var(--qf-line);border-radius:6px;font-size:14px;font-family:inherit}
.qf-form textarea{min-height:120px}
.qf-contact{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:900px){
 .qf-menu{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:20px 24px;border-bottom:1px solid var(--qf-line);gap:16px}
 .qf-menu.qf-open{display:flex}
 .qf-burger{display:flex}
 .qf-hero h1{font-size:30px}
 .qf-hero p{font-size:16px}
 .qf-hero-bg{width:100%;opacity:.15}
 .qf-stats-in{grid-template-columns:repeat(2,1fr)}
 .qf-g3,.qf-g4{grid-template-columns:1fr}
 .qf-foot-in{grid-template-columns:1fr 1fr}
 .qf-prod{grid-template-columns:1fr}
 .qf-contact{grid-template-columns:1fr}
 .qf-news{flex-direction:column}
 .qf-news .qf-thumb{width:100%;height:180px}
 .qf-sec{padding:50px 0}
 .qf-hero-in{padding:60px 0 70px}
}