:root{--orange:#E76F23;--orange-d:#D2691E;--nav:#4a4a4a;--ink:#222;--gray:#777;--line:#e5e5e5;--bg:#f6f6f6;--white:#fff;--foot:#2b2b2b;}
*{margin:0;padding:0;box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.8;}
a{color:#333;text-decoration:none;}
a:hover{color:var(--orange);}
img{max-width:100%;border:0;vertical-align:middle;}
ul{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 12px;}
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:12px;color:var(--gray);}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:32px;}
.topbar-left a{color:var(--gray);}
.topbar-right a{margin-left:14px;color:var(--gray);}
.topbar a:hover{color:var(--orange);}
.brand{background:#fff;}
.brand-inner{display:flex;justify-content:space-between;align-items:center;padding:16px 12px;}
.logo{font-size:34px;font-weight:bold;color:var(--nav);letter-spacing:3px;border-left:5px solid var(--orange);padding-left:14px;}
.brand-tel{text-align:right;line-height:1.5;}
.brand-tel span{color:var(--gray);font-size:13px;margin-right:6px;}
.brand-tel strong{color:var(--orange);font-size:26px;letter-spacing:1px;}
.brand-tel em{display:block;font-style:normal;color:var(--gray);font-size:12px;}
.mainnav{background:var(--nav);border-bottom:3px solid var(--orange);position:relative;z-index:50;}
.menu{display:flex;flex-wrap:wrap;}
.menu>li{position:relative;}
.menu>li>a{display:block;padding:0 20px;height:46px;line-height:46px;color:#f2f2f2;font-size:15px;white-space:nowrap;}
.menu>li:last-child{margin-left:auto;}
.menu>li.on>a,.menu>li>a:hover{background:var(--orange);color:#fff;}
.menu .sub{position:absolute;left:0;top:49px;min-width:150px;background:#fff;border:1px solid var(--line);box-shadow:0 4px 10px rgba(0,0,0,.12);display:none;}
.menu .has-sub:hover .sub{display:block;}
.menu .sub a{display:block;padding:8px 14px;color:#333;border-bottom:1px dashed #eee;white-space:nowrap;}
.menu .sub a:hover{background:#fff4ec;color:var(--orange);}
.subbar{background:var(--bg);border-bottom:1px solid var(--line);}
.subbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:38px;flex-wrap:wrap;gap:6px;}
.crumb{color:var(--gray);font-size:13px;}
.crumb a{color:#555;}.crumb .sep{margin:0 6px;color:#bbb;}
.mini-search{display:flex;}
.mini-search input{width:180px;height:30px;border:1px solid var(--line);padding:0 8px;border-radius:3px 0 0 3px;outline:none;}
.mini-search button{height:30px;border:0;background:var(--orange);color:#fff;padding:0 14px;border-radius:0 3px 3px 0;cursor:pointer;}
.mini-search button:hover{background:var(--orange-d);}
.page-wrap{display:flex;gap:14px;padding:14px 12px 0;align-items:flex-start;}
.sidebar{width:218px;flex-shrink:0;background:#fff;border:1px solid var(--line);border-radius:3px;overflow:hidden;}
.side-head{background:var(--nav);color:#fff;padding:10px 12px;display:flex;justify-content:space-between;align-items:center;font-weight:bold;}
.side-toggle{background:none;border:1px solid #888;color:#ddd;width:22px;height:22px;line-height:18px;cursor:pointer;border-radius:3px;}
.side-menu a{display:block;padding:9px 14px;border-bottom:1px solid #f0f0f0;}
.side-menu li.on>a{background:#fff4ec;color:var(--orange);border-left:3px solid var(--orange);padding-left:11px;font-weight:bold;}
.side-sub{background:#fafafa;}
.side-sub a{padding-left:28px;font-size:13px;color:#555;}
.side-hotline{padding:14px;text-align:center;background:#fff8f3;}
.side-hotline .t{color:var(--gray);font-size:12px;}
.side-hotline .n{color:var(--orange);font-size:22px;font-weight:bold;}
.side-hotline .n2{color:var(--gray);font-size:12px;}
.side-show{position:fixed;left:0;top:160px;z-index:40;background:var(--nav);color:#fff;border:0;padding:10px 6px;border-radius:0 3px 3px 0;cursor:pointer;writing-mode:vertical-rl;}
body.side-collapsed .sidebar{display:none;}
.content{flex:1;min-width:0;background:#fff;border:1px solid var(--line);border-radius:3px;padding:18px 22px;}
.content h1{font-size:22px;border-bottom:2px solid var(--orange);padding-bottom:10px;margin-bottom:16px;}
.content h2{font-size:17px;margin:18px 0 8px;border-left:4px solid var(--orange);padding-left:10px;}
.content p{margin:8px 0;color:#333;}
.note{background:#fffbe6;border-left:3px solid #f0c36d;padding:8px 12px;color:#8a6d3b;font-size:13px;margin:10px 0;}
.banner{position:relative;border:1px solid var(--line);border-radius:3px;overflow:hidden;margin-bottom:16px;background:#ddd;}
.banner .slides{position:relative;height:300px;}
.banner .slide{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;transition:opacity .6s;display:flex;align-items:center;justify-content:center;color:#fff;font-size:26px;font-weight:bold;letter-spacing:2px;}
.banner .slide.on{opacity:1;}
.banner .dots{position:absolute;right:14px;bottom:12px;display:flex;gap:6px;}
.banner .dots b{width:22px;height:22px;line-height:22px;text-align:center;background:rgba(0,0,0,.45);color:#fff;font-size:12px;font-weight:normal;cursor:pointer;border-radius:3px;}
.banner .dots b.on{background:var(--orange);}
.home-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.panel{border:1px solid var(--line);border-radius:3px;overflow:hidden;}
.panel-h{background:#fafafa;border-bottom:1px solid var(--line);padding:9px 14px;font-weight:bold;display:flex;justify-content:space-between;align-items:center;}
.panel-h a{font-size:12px;color:var(--gray);font-weight:normal;}
.panel-b{padding:12px 14px;}
.news-list li{display:flex;justify-content:space-between;border-bottom:1px dashed #eee;padding:6px 0;}
.news-list .d{color:#aaa;font-size:12px;}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.adv-grid a{border:1px solid var(--line);border-radius:3px;padding:14px 8px;text-align:center;background:#fafafa;}
.adv-grid a:hover{border-color:var(--orange);background:#fff4ec;color:var(--orange);}
.cat-group{margin-bottom:22px;}
.cat-group>h3{font-size:16px;background:#fafafa;border-left:4px solid var(--orange);padding:8px 12px;margin-bottom:12px;}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.prod-card{border:1px solid var(--line);border-radius:3px;overflow:hidden;background:#fff;text-align:center;}
.prod-card .pic{height:130px;background:#f2f2f2;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.prod-card .pic img{width:100%;height:100%;object-fit:cover;}
.prod-card .nm{padding:8px;font-size:13px;}
.prod-card:hover{border-color:var(--orange);box-shadow:0 3px 10px rgba(231,111,35,.12);}
.pd-top{display:flex;gap:20px;flex-wrap:wrap;}
.pd-img{width:340px;max-width:100%;border:1px solid var(--line);border-radius:3px;background:#f2f2f2;min-height:240px;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.pd-img img{width:100%;}
.pd-info{flex:1;min-width:240px;}
.param-table{width:100%;border-collapse:collapse;margin:10px 0;}
.param-table th,.param-table td{border:1px solid var(--line);padding:7px 10px;text-align:left;font-size:13px;}
.param-table th{background:#4a4a4a;color:#fff;width:130px;font-weight:normal;}
.param-table tr:nth-child(even) td{background:#fafafa;}
.meta{color:#999;font-size:12px;margin-bottom:10px;}
.news-page li{display:flex;justify-content:space-between;padding:10px 4px;border-bottom:1px dashed #e2e2e2;}
.pager{margin-top:16px;text-align:center;}
.pager a,.pager span{display:inline-block;border:1px solid var(--line);padding:3px 10px;margin:0 3px;border-radius:3px;}
.pager .on{background:var(--orange);color:#fff;border-color:var(--orange);}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.contact-grid .box{border:1px solid var(--line);border-radius:3px;padding:16px;}
.form-row{margin-bottom:12px;}
.form-row label{display:inline-block;width:90px;color:#555;}
input.txt,textarea.txt,select.txt{border:1px solid var(--line);border-radius:3px;padding:7px 9px;width:60%;outline:none;}
textarea.txt{width:90%;min-height:120px;}
.btn{display:inline-block;border:0;border-radius:3px;padding:8px 20px;cursor:pointer;color:#fff;background:var(--orange);}
.btn:hover{background:var(--orange-d);color:#fff;}
.btn.gray{background:#606266;}.btn.blue{background:#3a74b8;}.btn.red{background:#c0392b;}.btn.green{background:#3b8132;}
.footer{background:var(--foot);color:#cfcfcf;margin-top:20px;font-size:13px;}
.footer-main{display:flex;gap:30px;flex-wrap:wrap;padding:16px 12px 12px;}
.f-col{flex:1;min-width:220px;}.f-col.f-wide{flex:1.4;}
.f-col h4{color:#fff;font-size:14px;margin-bottom:6px;padding-left:10px;border-left:3px solid var(--orange);}
.f-links a{display:block;color:#cfcfcf;line-height:2.1;}
.f-links a:hover{color:var(--orange);}
.f-slogan{background:#333;border-left:3px solid var(--orange);padding:10px 14px;border-radius:3px;line-height:1.7;}
.f-slogan .big{color:var(--orange);font-size:15px;font-weight:bold;display:block;margin-bottom:2px;}
.f-contact{display:flex;gap:14px;align-items:flex-start;}
.qrcode{width:92px;height:92px;flex-shrink:0;background:#fff;color:#999;font-size:12px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;}
.qrcode img{width:100%;height:100%;object-fit:cover;}
.f-contact .hot{color:var(--orange);font-size:16px;font-weight:bold;}
.f-bottom{background:#1f1f1f;color:#9a9a9a;font-size:12px;text-align:center;padding:8px;line-height:1.6;}
.f-bottom a{color:#9a9a9a;}.f-bottom .ver{color:var(--orange);}
/* 登录页：账号密码 + 钉钉扫码 双栏 */
.login-wrap{max-width:760px;margin:26px auto;display:flex;gap:20px;flex-wrap:wrap;justify-content:center;}
.login-box{flex:1;min-width:300px;max-width:360px;background:#fff;border:1px solid var(--line);border-radius:4px;padding:24px 26px;}
.login-box h1{border-bottom:2px solid var(--orange);padding-bottom:12px;margin-bottom:18px;}
.login-err{background:#fef0f0;border-left:3px solid #c0392b;color:#c0392b;padding:9px 12px;font-size:13px;margin-bottom:14px;border-radius:2px;}
.login-form .form-item{margin-bottom:14px;}
.login-form .form-item label{display:inline-block;width:60px;color:#555;font-size:14px;}
.login-form .form-item input[type=text],.login-form .form-item input[type=password]{width:calc(100% - 70px);border:1px solid var(--line);border-radius:3px;padding:8px 10px;outline:none;}
.login-form .form-item input:focus{border-color:var(--orange);}
.dt-box{display:flex;flex-direction:column;align-items:center;}
.dt-qr{width:300px;height:360px;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.dt-qr iframe{border:0;}
.dt-qr-fail{width:240px;height:300px;background:#fafafa;border:1px dashed #ccc;border-radius:4px;text-align:center;line-height:2;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:15px;color:#666;}
.dt-tip{margin-top:12px;font-size:13px;color:var(--gray);text-align:center;line-height:1.7;}
.dt-tip b{color:var(--orange);}
.mobile-nav-btn{display:none;}
@media (max-width:900px){.prod-grid{grid-template-columns:repeat(3,1fr);}.adv-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:760px){
.topbar-inner{height:auto;flex-direction:column;align-items:flex-start;padding:4px 12px;}
.topbar-right{display:flex;}
.brand-inner{flex-direction:column;align-items:flex-start;gap:8px;}
.logo{font-size:26px;}.brand-tel{text-align:left;}
.mobile-nav-btn{display:block;width:100%;background:var(--nav);color:#fff;text-align:center;padding:11px 8px;border:0;border-bottom:1px solid #5a5a5a;font-size:15px;font-family:inherit;letter-spacing:3px;cursor:pointer;}
.mobile-nav-btn:hover,.mobile-nav-btn.on{background:var(--orange);}
.menu{flex-direction:column;display:none;}
.menu.open{display:flex;}
.menu>li:last-child{margin-left:0;}
.menu .sub{position:static;box-shadow:none;border:0;background:#3a3a3a;}
.menu .sub a{color:#ddd;border-color:#444;}
.menu .has-sub .sub{display:block;}
.subbar-inner{flex-direction:column;align-items:flex-start;}
.mini-search input{width:60vw;}
.page-wrap{flex-direction:column;}
.sidebar{width:100%;}
body.side-collapsed .sidebar{display:block;}
.side-toggle,.side-show{display:none;}
.content{padding:14px;}
.home-grid,.contact-grid{grid-template-columns:1fr;}
.prod-grid{grid-template-columns:repeat(2,1fr);}
.banner .slides{height:170px;}.banner .slide{font-size:18px;}
.pd-img{width:100%;}
.footer-main{flex-direction:column;gap:14px;}
.login-wrap{flex-direction:column;align-items:center;}
.login-box{max-width:100%;width:100%;}
input.txt,textarea.txt{width:100%;}
}