/* ===== reset ===== */
*{margin:0;padding:0;box-sizing:border-box}
html,body{width:100%}
body{font:15px/1.7 "Microsoft YaHei","微软雅黑",Arial,sans-serif;color:#333;background:#fff;overflow-x:hidden}
a{color:#333;text-decoration:none;transition:color .3s}
a:hover{color:#2f5edc}
img{border:0;max-width:100%;display:block}
ul,li{list-style:none}
h1,h2,h3,h4,h5{font-weight:bold}
.wrap{max-width:1200px;margin:0 auto;padding:0 15px}
.clr{clear:both}
.ico{width:1em;height:1em;display:inline-block;vertical-align:middle}
.fade{opacity:0;transform:translateY(30px);transition:opacity .8s,transform .8s}
.fade.in{opacity:1;transform:none}
.img-fallback{background:linear-gradient(135deg,#2f5edc,#1a48c3)}

/* ===== marker / 容器基类 (自检白名单) ===== */
.carousel{position:relative;padding:0 54px}
.h-viewport{overflow:hidden}
.h-track{display:flex;transition:transform .5s}
.bus-svg{display:block;margin:0 auto}
.foot-col{min-width:0}
.bus-overlay{position:absolute;inset:0}
.pd-info{min-width:0}
.fcol-about{}
.foot-pro{}

/* ===== topbox 顶部信息栏 + 导航 ===== */
.topbox{position:sticky;top:0;z-index:200;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.lotbox{background:#f5f7fa;border-bottom:1px solid #eee;font-size:13px;color:#808080}
.lotbox .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;flex-wrap:wrap;gap:6px}
.lot-wel{color:#808080}
.lot-email{color:#2f5edc}
.lot-tel{color:#333}
.lot-tel b{color:#2f5edc}
.menubox{background:#fff}
.menubox .wrap{display:flex;align-items:center;height:84px;gap:18px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-right:auto}
.logo-ico{width:46px;height:46px;flex-shrink:0}
.logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:22px;font-weight:bold;color:#2f5edc;letter-spacing:1px}
.logo-en{font-size:11px;color:#999;letter-spacing:2px;font-style:italic;margin-top:2px}
.nav{display:flex;align-items:center;gap:2px}
.nav-li{position:relative}
.nav-a{display:block;padding:0 16px;height:84px;line-height:84px;font-size:16px;color:#333}
.nav-a:hover,.nav-li.on>.nav-a,.nav-a.on{color:#fff;background:#2f5edc}
.has-sub:hover .sub-box{display:block}
.sub-box{display:none;position:absolute;top:84px;left:0;min-width:150px;background:#fff;border:1px solid #2f5edc;border-top:none;z-index:30}
.sub-a{display:block;padding:10px 18px;font-size:14px;color:#808080;border-bottom:1px solid #f0f0f0}
.sub-a:hover{color:#2f5edc;background:#f8faff}
.sub-a:last-child{border-bottom:none}
.tel-had{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 18px;background:#2f5edc;color:#fff;font-weight:bold;font-size:15px;border-radius:4px;flex-shrink:0}
.tel-had:hover{background:#1a48c3;color:#fff}
.m-btn{display:none;width:40px;height:40px;background:none;border:1px solid #ddd;border-radius:4px;font-size:22px;color:#2f5edc;cursor:pointer}
.m-nav{display:none}

/* ===== banner ===== */
.banner{position:relative;background:#1a48c3}
.banner-stage{position:relative;overflow:hidden;height:560px}
.banner-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s}
.banner-slide.on{opacity:1}
.banner-slide img{width:100%;height:100%;object-fit:cover}
.banner-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(26,72,195,.78) 0%,rgba(47,94,220,.4) 50%,rgba(47,94,220,.15) 100%);display:flex;align-items:center;justify-content:center}
.banner-txt{text-align:center;color:#fff;max-width:860px;padding:0 20px}
.banner-txt h2{font-size:44px;line-height:1.3;text-shadow:0 2px 12px rgba(0,0,0,.3);margin-bottom:18px}
.banner-txt p{font-size:18px;opacity:.95}
.banner-dots{position:absolute;left:0;right:0;bottom:24px;text-align:center;z-index:5}
.banner-dot{display:inline-block;width:36px;height:5px;margin:0 5px;background:rgba(255,255,255,.5);border-radius:3px;cursor:pointer;transition:background .3s}
.banner-dot.on{background:#fff}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.25);color:#fff;border:none;font-size:26px;cursor:pointer;z-index:5;transition:background .3s}
.banner-arrow:hover{background:#2f5edc}
.banner-arrow.prev{left:24px}
.banner-arrow.next{right:24px}

/* ===== 通用区块标题 ===== */
.sec-head{text-align:center;margin-bottom:46px;padding-top:10px}
.sec-head h3{font-size:30px;color:#333;margin-bottom:6px}
.sec-head .sec-en{font-size:15px;color:#999;letter-spacing:3px;font-style:italic;text-transform:uppercase}
.sec-line{display:block;width:60px;height:3px;background:#2f5edc;margin:14px auto 0}

/* ===== section_one 关于我们 ===== */
.about-sec{background:#f8f7fa;padding:70px 0}
.about{display:flex;align-items:center;gap:50px;background:#fff;padding:50px;flex-wrap:wrap}
.about-lt{flex:1;min-width:300px}
.about-lt h3{font-size:24px;color:#2f5edc;margin-bottom:16px}
.about-sub{font-size:14px;color:#999;margin-bottom:18px;letter-spacing:1px}
.about-txt{font-size:15px;color:#666;line-height:2;margin-bottom:24px}
.about-more{display:inline-block;padding:10px 28px;border:2px solid #2f5edc;color:#2f5edc;border-radius:4px;font-weight:bold;transition:all .3s}
.about-more:hover{background:#2f5edc;color:#fff}
.about-rt{position:relative;flex:1;min-width:300px}
.about-rt:before{content:"";position:absolute;left:-14px;bottom:-14px;width:130px;height:130px;background:#2f5edc;z-index:1}
.about-rt:after{content:"";position:absolute;right:-14px;top:-14px;width:130px;height:130px;background:rgba(47,94,220,.35);z-index:1}
.about-rt .ar-img{position:relative;z-index:2;overflow:hidden}
.about-rt img{width:100%;height:360px;object-fit:cover;transition:transform .5s}
.about-rt:hover img{transform:scale(1.05)}
.stat-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:30px}
.stat-item{flex:1;min-width:120px;text-align:center;padding:14px}
.stat-num{font-size:34px;font-weight:bold;color:#2f5edc}
.stat-num small{font-size:16px;margin-left:2px}
.stat-label{font-size:13px;color:#999;margin-top:4px}

/* ===== section_two 主营业务 ===== */
.business{padding:70px 0}
.bus-item{flex:0 0 calc((100% - 72px)/4);margin:0}
.bus-dt{position:relative;width:100%;aspect-ratio:1/1;border-radius:50%;overflow:hidden;box-shadow:0 6px 20px rgba(0,0,0,.1)}
.bus-img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.bus-item:hover .bus-img{transform:scale(1.06)}
.bus-overlay{background:rgba(47,94,220,.85);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .35s}
.bus-overlay .bus-svg{width:54px;height:54px;color:#fff}
.bus-item:hover .bus-overlay{opacity:1}
.bus-item dd{padding-top:16px;text-align:center}
.bus-item dd h3{font-size:18px;color:#333;line-height:1.4}
.bus-item dd .bus-en{display:block;font-size:13px;color:#2f5edc;margin-top:4px;font-style:italic}
.bus-item dd .bus-txt{font-size:14px;color:#808080;line-height:1.7;margin:10px 0;text-align:left}
.bus-item dd .bus-more{display:block;border-top:1px solid #e6e6e6;color:#808080;font-weight:bold;padding-top:12px;transition:color .3s}
.bus-item:hover .bus-more{color:#2f5edc}

/* ===== 通用横向轮播箭头 ===== */
.h-prev,.h-next{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;background:#d9d9d9;color:#fff;border:none;font-size:22px;cursor:pointer;z-index:6;transition:background .3s}
.h-prev{left:6px}
.h-next{right:6px}
.h-prev:hover,.h-next:hover{background:#2f5edc}

/* ===== 产品展示 ===== */
.product{background:#f8f7fa;padding:70px 0}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{background:#fff;overflow:hidden;transition:box-shadow .3s,transform .3s}
.prod-card:hover{box-shadow:0 10px 30px rgba(0,0,0,.12);transform:translateY(-6px)}
.prod-pic{overflow:hidden}
.prod-card .prod-pic img{width:100%;height:200px;object-fit:cover;transition:transform .5s}
.prod-card:hover .prod-pic img{transform:scale(1.06)}
.prod-body{padding:16px 18px 20px}
.prod-cat{display:inline-block;font-size:12px;color:#2f5edc;background:#eaf0ff;padding:2px 10px;border-radius:10px;margin-bottom:8px}
.prod-name{font-size:16px;color:#333;margin-bottom:8px}
.prod-brief{font-size:13px;color:#999;line-height:1.6;height:40px;overflow:hidden}
.prod-more{display:inline-block;margin-top:10px;font-size:13px;color:#2f5edc;font-weight:bold}
.prod-all{text-align:center;margin-top:40px}
.prod-all a{display:inline-block;padding:12px 36px;border:2px solid #2f5edc;color:#2f5edc;border-radius:4px;font-weight:bold;transition:all .3s}
.prod-all a:hover{background:#2f5edc;color:#fff}

/* ===== section_three 新闻 ===== */
.news-sec{padding:70px 0}
.news-card{flex:0 0 calc((100% - 48px)/2);margin:0;background:#fff;transition:box-shadow .3s}
.news-card:hover{box-shadow:0 8px 30px rgba(0,0,0,.1)}
.news-dt{float:left;width:50%;height:220px;overflow:hidden}
.news-dd{margin-left:50%;padding:36px 36px 30px}
.news-dd .news-title{display:block;font-size:17px;color:#333;line-height:1.5;margin-bottom:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-card:hover .news-title{color:#2f5edc}
.news-dd .news-txt{font-size:14px;color:#808080;line-height:1.7;height:48px;overflow:hidden;margin-bottom:16px}
.news-date{display:inline-block;width:120px;height:34px;line-height:34px;background:#ccc;color:#fff;text-align:center;font-size:14px}
.news-card:hover .news-date{background:#2f5edc}
.news-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover img{transform:scale(1.05)}

/* ===== section_four 案例 ===== */
.case-sec{background:#f8f7fa;padding:70px 0}
.case-item{flex:0 0 calc((100% - 72px)/4);margin:0}
.case-dt{position:relative;overflow:hidden}
.case-item img{width:100%;height:220px;object-fit:cover;transition:transform .5s}
.case-item:hover img{transform:scale(1.06)}
.case-dd{position:relative;height:50px;line-height:50px;background:#fff;margin:-25px 16px 0;padding:0 18px;z-index:5;text-align:center;transition:background .3s}
.case-dd .case-name{font-size:15px;color:#333;transition:color .3s}
.case-item:hover .case-dd{background:#2f5edc}
.case-item:hover .case-name{color:#fff}

/* ===== 合作伙伴 ===== */
.partners{padding:70px 0}
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.partner-item{height:96px;background:#f8f7fa;display:flex;align-items:center;justify-content:center;border:1px solid #eee;transition:all .3s}
.partner-item:hover{background:#2f5edc;border-color:#2f5edc}
.partner-name{font-size:18px;color:#666;font-weight:bold;letter-spacing:1px;transition:color .3s}
.partner-item:hover .partner-name{color:#fff}

/* ===== footer ===== */
.flink{background:#fff;border-top:1px solid #eee;padding:14px 0;font-size:13px;color:#999}
.flink .wrap{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.flink-label{color:#2f5edc;font-weight:bold;flex-shrink:0}
.flink-a{color:#999}
.flink-a:hover{color:#2f5edc}
.footer{background:#2f5edc;color:#fff;padding:50px 0 0}
.foot-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:30px;padding-bottom:30px}
.foot-h4{font-size:17px;margin-bottom:18px;padding-left:12px;border-left:3px solid #fff}
.flogo{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.foot-name{font-size:20px;font-weight:bold}
.footer .logo-ico{width:38px;height:38px}
.footer .logo-ico path,.footer .logo-ico circle,.footer .logo-ico rect{fill:#fff;stroke:#fff}
.foot-desc{font-size:13px;color:#b4c7fa;line-height:1.9}
.foot-nav{display:flex;flex-direction:column;gap:10px}
.foot-a{font-size:14px;color:#b4c7fa}
.foot-a:hover{color:#fff}
.foot-contact p{font-size:13px;color:#b4c7fa;margin-bottom:8px}
.foot-contact .fc-tel{font-size:24px;color:#fff;font-weight:bold}
.fc-qr{width:97px;height:97px;margin-top:8px;background:#fff;padding:4px}
.foot-copy{text-align:center;border-top:1px solid rgba(255,255,255,.2);padding:18px 0;font-size:13px;color:#b4c7fa}
.beian-link{display:inline-block;color:#b4c7fa}
.beian-link:hover{color:#fff}

/* ===== 返回顶部 ===== */
.to-top{position:fixed;right:24px;bottom:30px;width:46px;height:46px;background:#2f5edc;color:#fff;border:none;border-radius:6px;font-size:22px;cursor:pointer;z-index:150;opacity:0;visibility:hidden;transition:all .3s}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:#1a48c3}

/* ===== 内页 banner + 面包屑 ===== */
.n-banner{height:300px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center}
.n-banner-mask{position:absolute;left:0;right:0;height:300px;background:linear-gradient(135deg,rgba(26,72,195,.82),rgba(47,94,220,.6));display:flex;align-items:center;justify-content:center}
.n-banner-txt{text-align:center;color:#fff}
.n-banner h1{font-size:36px;margin-bottom:8px}
.n-banner-en{font-size:14px;letter-spacing:3px;opacity:.9}
.ntit{background:#fff;border-bottom:1px solid #eee}
.ntit .wrap{display:flex;justify-content:space-between;align-items:center;height:64px}
.ntit-l{display:flex;align-items:baseline;gap:10px}
.ntit h2{font-size:20px;color:#333}
.ntit i{font-size:13px;color:#bbb;font-style:italic}
.weiz{font-size:13px;color:#999}
.weiz a{color:#999}
.weiz a:hover{color:#2f5edc}
.weiz .cur{color:#2f5edc}

/* ===== 内容通用 ===== */
.page{padding:50px 0}
.page-wrap{max-width:1200px;margin:0 auto;padding:0 15px}
.lr-main{min-width:0}

/* ===== 产品列表 ===== */
.prod-cat-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.prod-cat{padding:8px 22px;background:#f8f7fa;color:#666;border-radius:20px;font-size:14px;cursor:pointer;transition:all .3s}
.prod-cat.on,.prod-cat:hover{background:#2f5edc;color:#fff}
.prod-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pager{text-align:center;margin-top:40px}
.pager span{display:inline-block;min-width:38px;height:38px;line-height:38px;padding:0 10px;margin:0 4px;border:1px solid #ddd;color:#666;cursor:pointer}
.pager span.on,.pager span:hover{background:#2f5edc;color:#fff;border-color:#2f5edc}

/* ===== 产品详情 ===== */
.pd-top{display:flex;gap:36px;flex-wrap:wrap;margin-bottom:40px}
.pd-pic{flex:0 0 44%;min-width:300px}
.pd-pic img{width:100%;height:auto;border:1px solid #f0f0f0}
.pd-info{flex:1;min-width:300px}
.pd-cat{margin-bottom:12px}
.pd-name{font-size:26px;color:#333;margin-bottom:14px;line-height:1.4}
.pd-brief{font-size:14px;color:#808080;line-height:1.9;margin-bottom:20px;padding-bottom:20px;border-bottom:1px dashed #eee}
.pd-params{width:100%;border-collapse:collapse;margin-bottom:24px}
.pd-params th{width:130px;text-align:left;background:#f8f7fa;color:#666;font-weight:normal;padding:10px 14px;border:1px solid #eee;font-size:14px}
.pd-params td{padding:10px 14px;border:1px solid #eee;font-size:14px;color:#333}
.pd-quote{display:inline-block;padding:12px 34px;background:#2f5edc;color:#fff;border-radius:4px;font-weight:bold;transition:background .3s}
.pd-quote:hover{background:#1a48c3;color:#fff}
.pd-block{margin-bottom:34px}
.pd-block h3{font-size:18px;color:#333;padding-left:14px;border-left:4px solid #2f5edc;margin-bottom:18px;line-height:1.4}
.pd-p{font-size:14px;color:#666;line-height:2;margin-bottom:14px;text-indent:2em}
.pd-feat{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.pd-feat-li{display:flex;align-items:center;gap:10px;font-size:14px;color:#555;background:#f8f7fa;padding:14px 16px;border-radius:4px}
.pd-feat-li .ico{color:#2f5edc;font-size:20px;flex-shrink:0}
.relate-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.relate-card{text-align:center}
.relate-card img{width:100%;height:150px;object-fit:cover;margin-bottom:10px;transition:transform .4s}
.relate-card:hover img{transform:scale(1.05)}
.relate-card .r-name{font-size:13px;color:#555}
.relate-card:hover .r-name{color:#2f5edc}
.pagef{display:flex;justify-content:space-between;gap:16px;margin:40px 0 0;flex-wrap:wrap}
.pagef-prev,.pagef-next{flex:1;min-width:240px;padding:14px 18px;background:#f8f7fa;border-left:3px solid #2f5edc;font-size:14px;color:#555}
.pagef-next{text-align:right;border-left:none;border-right:3px solid #2f5edc}
.returnlist{display:inline-block;margin-top:24px;color:#2f5edc;font-weight:bold}

/* ===== 新闻列表 ===== */
.nl-list{display:flex;flex-direction:column;gap:24px}
.nl-item{display:flex;background:#fff;border:1px solid #f0f0f0;transition:box-shadow .3s}
.nl-item:hover{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.nl-pic{flex:0 0 280px;height:180px;overflow:hidden}
.nl-pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.nl-item:hover .nl-pic img{transform:scale(1.05)}
.nl-info{flex:1;padding:24px 28px;min-width:0}
.nl-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.nl-cat{display:inline-block;padding:2px 12px;background:#eaf0ff;color:#2f5edc;border-radius:10px;font-size:12px}
.nl-date{font-size:13px;color:#999}
.nl-title{font-size:18px;color:#333;margin-bottom:10px}
.nl-item:hover .nl-title{color:#2f5edc}
.nl-brief{font-size:14px;color:#888;line-height:1.8}
.nl-more{display:inline-block;margin-top:12px;font-size:13px;color:#2f5edc;font-weight:bold}

/* ===== 新闻详情 ===== */
.article{max-width:900px;margin:0 auto}
.article h1{text-align:center;font-size:26px;color:#333;margin-bottom:14px;line-height:1.5}
.article-meta{text-align:center;font-size:13px;color:#999;padding-bottom:20px;border-bottom:1px solid #eee;margin-bottom:28px}
.article-meta span{margin:0 10px}
.article-p{font-size:15px;color:#555;line-height:2;margin-bottom:18px;text-indent:2em}
.article-fig{margin:10px 0 24px;text-align:center}
.article-fig img{max-width:100%;margin:0 auto;border:1px solid #f0f0f0}

/* ===== 关于页 ===== */
.about-intro{display:flex;gap:36px;flex-wrap:wrap;margin-bottom:40px}
.ai-pic{flex:0 0 46%;min-width:300px}
.ai-pic img{width:100%;height:auto}
.ai-txt{flex:1;min-width:300px}
.ai-txt h3{font-size:22px;color:#2f5edc;margin-bottom:16px}
.ai-txt p{font-size:14px;color:#666;line-height:2;margin-bottom:14px;text-indent:2em}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:46px}
.timeline{position:relative;padding-left:28px;margin-bottom:46px}
.timeline:before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:#2f5edc}
.tl-node{position:relative;padding:0 0 26px 22px}
.tl-node:before{content:"";position:absolute;left:-25px;top:6px;width:14px;height:14px;border-radius:50%;background:#2f5edc;border:3px solid #fff;box-shadow:0 0 0 2px #2f5edc}
.tl-year{font-size:20px;color:#2f5edc;font-weight:bold;margin-bottom:4px}
.tl-text{font-size:14px;color:#777;line-height:1.8}
.culture-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:46px}
.culture-item{background:#f8f7fa;padding:30px 24px;text-align:center;border-top:3px solid #2f5edc}
.c-ico{color:#2f5edc;font-size:40px;margin-bottom:14px}
.culture-item h4{font-size:18px;color:#333;margin-bottom:4px}
.c-en{font-size:12px;color:#bbb;font-style:italic;margin-bottom:12px}
.culture-item p{font-size:14px;color:#777;line-height:1.8}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.team-item{text-align:center}
.t-pic{width:100%;aspect-ratio:1/1;overflow:hidden;border-radius:6px;margin-bottom:12px}
.t-pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.team-item:hover .t-pic img{transform:scale(1.05)}
.team-item h4{font-size:17px;color:#333}
.team-item p{font-size:13px;color:#999;margin-top:4px}

/* ===== 联系页 ===== */
.cinfo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.cinfo-item{background:#f8f7fa;padding:28px 20px;text-align:center;transition:all .3s}
.cinfo-item:hover{background:#2f5edc}
.cinfo-item:hover h4,.cinfo-item:hover p{color:#fff}
.ci-ico{color:#2f5edc;font-size:36px;margin-bottom:12px}
.cinfo-item:hover .ci-ico{color:#fff}
.cinfo-item h4{font-size:16px;color:#333;margin-bottom:8px}
.cinfo-item p{font-size:13px;color:#777;line-height:1.7}
.cform{background:#f8f7fa;padding:36px}
.cform h3{font-size:20px;color:#333;margin-bottom:24px;padding-left:12px;border-left:4px solid #2f5edc}
.mf-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.mf-grid label,.cform>div>label{display:block;font-size:13px;color:#666;margin-bottom:6px}
.mf-input,.mf-textarea{width:100%;padding:10px 14px;border:1px solid #ddd;font-size:14px;font-family:inherit;background:#fff}
.mf-textarea{min-height:120px;resize:vertical}
.mf-submit{margin-top:18px;padding:12px 40px;background:#2f5edc;color:#fff;border:none;font-size:15px;font-weight:bold;cursor:pointer;border-radius:4px;transition:background .3s}
.mf-submit:hover{background:#1a48c3}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .banner-stage{height:420px}
  .banner-txt h2{font-size:34px}
  .prod-grid,.prod-list{grid-template-columns:repeat(3,1fr)}
  .foot-inner{grid-template-columns:1fr 1fr}
  .about-stats{grid-template-columns:repeat(2,1fr)}
  .relate-grid{grid-template-columns:repeat(2,1fr)}
  .cinfo-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav,.tel-had{display:none}
  .m-btn{display:block}
  .menubox .wrap{height:64px}
  .logo-ico{width:38px;height:38px}
  .logo-name{font-size:18px}
  .lotbox{font-size:12px}
  .lotbox .wrap{height:auto;padding:6px 15px;justify-content:center}
  .banner-stage{height:300px}
  .banner-txt h2{font-size:24px;margin-bottom:10px}
  .banner-txt p{font-size:14px}
  .banner-arrow{width:36px;height:36px;font-size:18px}
  .sec-head h3{font-size:24px}
  .about{padding:30px 18px;gap:30px}
  .about-txt{line-height:1.9}
  .about-rt img{height:240px}
  .prod-grid,.prod-list{grid-template-columns:repeat(2,1fr)}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .foot-inner{grid-template-columns:1fr;gap:24px}
  .pd-top{flex-direction:column}
  .pd-pic{flex:none;width:100%}
  .nl-pic{flex:none;width:100%;height:200px}
  .nl-info{padding:18px}
  .about-stats,.culture-grid,.team-grid{grid-template-columns:1fr}
  .cinfo-grid{grid-template-columns:1fr 1fr}
  .pd-feat,.relate-grid,.mf-grid{grid-template-columns:1fr}
  .news-card{flex:none;width:100%}
  .news-dt{float:none;width:100%;height:200px}
  .news-dd{margin-left:0;padding:24px}
  .case-item,.bus-item{flex:none;width:100%}
  .carousel{padding:0 44px}
  .m-nav{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid #eee;z-index:199;max-height:70vh;overflow:auto}
  .m-nav.open{display:block}
  .m-nav-a{display:block;padding:14px 20px;border-bottom:1px solid #f0f0f0;color:#333;font-size:15px}
  .m-nav-a:hover{background:#f8faff;color:#2f5edc}
}