/* ===== VIMAI 威迈科技 站点样式 ===== */
*{margin:0;padding:0;box-sizing:border-box}
html,body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;color:#333;line-height:1.6;background:#fff}
a{color:#333;text-decoration:none;transition:color .2s}
a:hover{color:#f24330}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 15px}
.cf::after{content:"";display:table;clear:both}

/* ===== 顶部信息条 ===== */
.topbar{background:#1a1a1a;color:#bbb;font-size:12px;line-height:36px}
.topbar .container{display:flex;justify-content:space-between;flex-wrap:wrap}
.topbar a{color:#bbb;margin-left:20px}
.topbar a:first-child{margin-left:0}
.topbar a:hover{color:#f24330}

/* ===== Header ===== */
.header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header .container{display:flex;align-items:center;height:88px}
.logo img{height:60px;width:auto}
.logo{display:flex;align-items:center;gap:10px}
.logo .logo-text{font-size:20px;font-weight:700;color:#f24330;letter-spacing:1px}

/* 主导航 */
.mainnav{flex:1;display:flex;justify-content:flex-end}
.mainnav ul{display:flex;align-items:center;flex-wrap:wrap}
.mainnav li{position:relative}
.mainnav > ul > li > a{display:block;padding:0 18px;line-height:88px;font-size:15px;font-weight:500;color:#333;position:relative}
.mainnav > ul > li > a:hover,.mainnav > ul > li.active > a{color:#f24330}
.mainnav > ul > li.active > a::after{content:"";position:absolute;left:18px;right:18px;bottom:24px;height:2px;background:#f24330}
.mainnav .sub-menu{position:absolute;top:100%;left:0;min-width:180px;background:#fff;border:1px solid #eee;box-shadow:0 4px 12px rgba(0,0,0,.08);display:none;z-index:10}
.mainnav li:hover .sub-menu{display:block}
.mainnav .sub-menu a{display:block;padding:10px 18px;border-bottom:1px solid #f5f5f5;line-height:1.4;font-size:14px}
.mainnav .sub-menu a:hover{background:#f5f5f5;color:#f24330}

/* 移动端汉堡 */
.menu-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer;color:#333}

/* ===== 首页 Banner ===== */
.home-banner{background:linear-gradient(135deg,#1a1a1a 0%,#333 50%,#5a1a0a 100%);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.home-banner::before{content:"";position:absolute;top:-50%;right:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(242,67,48,.2),transparent 70%)}
.home-banner .container{display:flex;align-items:center;gap:40px;position:relative;z-index:1}
.home-banner .bn-text{flex:1}
.home-banner h1{font-size:48px;font-weight:700;margin-bottom:20px;line-height:1.2}
.home-banner h1 span{color:#f24330}
.home-banner .tagline{font-size:20px;color:#ddd;margin-bottom:30px}
.home-banner .features{display:flex;gap:30px;margin-bottom:30px;flex-wrap:wrap}
.home-banner .features div{padding-left:18px;border-left:3px solid #f24330}
.home-banner .features strong{display:block;font-size:24px;color:#fff}
.home-banner .features span{color:#aaa;font-size:13px}
.home-banner .bn-img{flex:1;max-width:480px}
.home-banner .bn-img img{border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.home-banner .btn-row{display:flex;gap:15px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 26px;border-radius:4px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;border:0}
.btn-primary{background:#f24330;color:#fff}
.btn-primary:hover{background:#d63822;color:#fff}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:#fff;color:#333}

/* ===== 通用 Section ===== */
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;font-weight:700;color:#1a1a1a;position:relative;display:inline-block;padding:0 40px}
.section-title h2::before,.section-title h2::after{content:"";position:absolute;top:50%;width:30px;height:2px;background:#f24330}
.section-title h2::before{left:0}
.section-title h2::after{right:0}
.section-title .sub{color:#888;font-size:14px;margin-top:10px;letter-spacing:2px}

/* ===== 分类卡片（首页） ===== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{background:#fff;border:1px solid #eee;padding:30px 20px;text-align:center;transition:all .25s;position:relative;overflow:hidden}
.cat-card:hover{border-color:#f24330;transform:translateY(-3px);box-shadow:0 10px 24px rgba(242,67,48,.12)}
.cat-card .ico{width:64px;height:64px;margin:0 auto 15px;background:linear-gradient(135deg,#f24330,#ff6e26);color:#fff;display:flex;align-items:center;justify-content:center;font-size:28px;border-radius:50%}
.cat-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.cat-card p{color:#888;font-size:13px;line-height:1.5;height:40px;overflow:hidden}

/* ===== 产品网格 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-card{background:#fff;border:1px solid #eee;transition:all .25s;overflow:hidden}
.prod-card:hover{border-color:#f24330;box-shadow:0 6px 18px rgba(242,67,48,.1);transform:translateY(-2px)}
.prod-card .img{aspect-ratio:1/1;background:#f5f5f5;display:flex;align-items:center;justify-content:center;overflow:hidden}
.prod-card .img img{max-width:90%;max-height:90%;transition:transform .3s}
.prod-card:hover .img img{transform:scale(1.05)}
.prod-card .info{padding:16px}
.prod-card .name{font-size:15px;font-weight:500;color:#1a1a1a;margin-bottom:8px;line-height:1.4;height:42px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.prod-card .cat-tag{display:inline-block;padding:2px 8px;background:#fff0ee;color:#f24330;font-size:11px;border-radius:2px;margin-bottom:6px}
.prod-card .view{display:inline-block;margin-top:10px;font-size:13px;color:#f24330}
.prod-card .view::after{content:" →"}

/* ===== 面包屑 ===== */
.breadcrumb{background:#f5f5f5;padding:14px 0;font-size:13px;color:#888}
.breadcrumb a{color:#888}
.breadcrumb a:hover{color:#f24330}
.breadcrumb .sep{margin:0 8px;color:#ccc}

/* ===== 页面标题条 ===== */
.page-banner{background:linear-gradient(135deg,#1a1a1a,#5a1a0a);color:#fff;padding:50px 0;text-align:center;position:relative}
.page-banner::after{content:"";position:absolute;inset:0;background:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="30" cy="30" r="1" fill="rgba(255,255,255,.06)"/></svg>');opacity:.4}
.page-banner h1{font-size:32px;font-weight:700;margin-bottom:8px;position:relative;z-index:1}
.page-banner .en{color:#f24330;font-size:14px;letter-spacing:3px;position:relative;z-index:1;text-transform:uppercase}

/* ===== 列表页分类Tab ===== */
.cat-tabs{background:#fff;border-bottom:2px solid #f5f5f5;padding:0 0;margin-bottom:30px}
.cat-tabs .container{display:flex;flex-wrap:wrap;gap:0}
.cat-tabs a{padding:14px 24px;font-size:15px;color:#333;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s}
.cat-tabs a:hover,.cat-tabs a.active{color:#f24330;border-color:#f24330}
.cat-tabs a.active{font-weight:500}

/* ===== 列表页筛选/分页 ===== */
.toolbar{display:flex;justify-content:space-between;align-items:center;padding:15px 0;background:#f9f9f9;padding:10px 15px;margin-bottom:20px;font-size:13px;color:#666}
.pagination{display:flex;justify-content:center;gap:6px;margin:40px 0;flex-wrap:wrap}
.pagination a,.pagination span{display:inline-block;padding:8px 14px;min-width:38px;text-align:center;background:#fff;border:1px solid #eee;color:#666;font-size:13px;border-radius:2px}
.pagination a:hover{border-color:#f24330;color:#f24330}
.pagination .current,.pagination span.current{background:#f24330;color:#fff;border-color:#f24330}

/* ===== 详情页 ===== */
.prod-detail{padding:40px 0}
.prod-detail .container{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.gallery .main-img{background:#f5f5f5;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;border:1px solid #eee;border-radius:4px;overflow:hidden;margin-bottom:12px}
.gallery .main-img img{max-width:100%;max-height:100%;object-fit:contain}
.gallery .thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.gallery .thumbs img{width:100%;aspect-ratio:1/1;object-fit:cover;border:2px solid #eee;border-radius:3px;cursor:pointer;background:#f5f5f5;transition:border-color .2s}
.gallery .thumbs img:hover,.gallery .thumbs img.active{border-color:#f24330}
.prod-info h1{font-size:28px;font-weight:600;color:#1a1a1a;margin-bottom:12px;line-height:1.3}
.prod-info .meta{color:#888;font-size:13px;margin-bottom:20px;padding-bottom:15px;border-bottom:1px solid #eee}
.prod-info .desc{color:#555;line-height:1.8;margin-bottom:25px;background:#f9f9f9;padding:15px;border-left:3px solid #f24330;font-size:14px}
.prod-info .actions{display:flex;gap:12px;flex-wrap:wrap;margin:25px 0}
.prod-info .actions .btn{padding:12px 30px;font-size:15px}
.prod-info .actions .btn-contact{background:#1a1a1a}
.prod-info .actions .btn-contact:hover{background:#333}

/* 参数表 */
.param-section{margin:50px 0}
.param-section h3{font-size:20px;font-weight:600;color:#1a1a1a;padding:10px 0;border-bottom:2px solid #f24330;display:inline-block;margin-bottom:20px}
.param-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #eee}
.param-table tr{border-bottom:1px solid #f0f0f0}
.param-table th,.param-table td{padding:14px 18px;font-size:14px;text-align:left;vertical-align:top}
.param-table th{width:180px;background:#f9f9f9;color:#666;font-weight:500}
.param-table td{color:#333}
.param-table tr:hover{background:#fafafa}

/* 详情区 */
.detail-content{margin:30px 0;line-height:1.8}
.detail-content p{margin-bottom:0px}
.detail-content img{max-width:100%;height:auto;display:block;margin:0px auto;border-radius:0px}

/* 相关产品 */
.related{margin-top:60px;padding-top:40px;border-top:1px solid #eee}
.related h3{font-size:20px;font-weight:600;margin-bottom:25px;display:flex;align-items:center}
.related h3::before{content:"";display:inline-block;width:4px;height:20px;background:#f24330;margin-right:10px}

/* ===== 单页（关于/联系） ===== */
.single-page{padding:50px 0}
.single-page .container{display:grid;grid-template-columns:240px 1fr;gap:40px}
.sidemenu{background:#fff;border:1px solid #eee;padding:0;height:fit-content}
.sidemenu h4{background:#1a1a1a;color:#fff;padding:16px 20px;font-size:16px;font-weight:500}
.sidemenu a{display:block;padding:14px 20px;border-bottom:1px solid #f5f5f5;color:#333;transition:all .2s;position:relative}
.sidemenu a:hover,.sidemenu a.active{color:#f24330;background:#fafafa;padding-left:26px}
.sidemenu a:hover::before,.sidemenu a.active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:#f24330}
.sidemenu a:last-child{border-bottom:0}
.article-body{background:#fff;padding:40px;border:1px solid #eee;line-height:1.9;font-size:15px;color:#444}
.article-body h1,.article-body h2{color:#1a1a1a;margin:25px 0 15px;font-weight:600}
.article-body h1{font-size:24px;border-left:4px solid #f24330;padding-left:15px}
.article-body h2{font-size:20px}
.article-body p{margin-bottom:15px}
.article-body img{max-width:100%;height:auto;border-radius:4px;margin:15px 0}

/* ===== 留言页 ===== */
.gbook-wrap{padding:50px 0}
.gbook-wrap .container{max-width:780px}
.gbook-form{background:#fff;padding:40px;border:1px solid #eee;border-radius:6px}
.gbook-form .form-tip{background:#fff0ee;border-left:3px solid #f24330;padding:12px 18px;color:#666;font-size:13px;margin-bottom:25px;border-radius:2px}
.gbook-form .row{margin-bottom:18px;display:grid;grid-template-columns:110px 1fr;gap:15px;align-items:start}
.gbook-form .row label{padding-top:8px;color:#333;font-size:14px}
.gbook-form .row label .req{color:#f24330;margin-left:3px}
.gbook-form input[type=text],.gbook-form input[type=email],.gbook-form input[type=tel],.gbook-form textarea{width:100%;padding:9px 12px;border:1px solid #ddd;border-radius:3px;font-size:14px;font-family:inherit;transition:border-color .2s;background:#fafafa}
.gbook-form input:focus,.gbook-form textarea:focus{outline:0;border-color:#f24330;background:#fff}
.gbook-form textarea{min-height:120px;resize:vertical}
.gbook-form .submit-row{text-align:center;margin-top:30px}
.gbook-form .btn-submit{background:#f24330;color:#fff;border:0;padding:12px 60px;font-size:15px;font-weight:500;border-radius:3px;cursor:pointer;transition:background .2s}
.gbook-form .btn-submit:hover{background:#d63822}

/* ===== Footer ===== */
.footer{background:#1a1a1a;color:#aaa;padding:50px 0 0;margin-top:60px}
.footer .container{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer h5{color:#fff;font-size:16px;font-weight:500;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer h5::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:#f24330}
.footer ul li{padding:5px 0;font-size:13px}
.footer ul li a{color:#aaa}
.footer ul li a:hover{color:#f24330}
.footer .contact p{padding:5px 0;font-size:13px;line-height:1.7}
.footer .contact strong{color:#fff;display:block;margin-top:10px;font-size:13px}
.footer .copy{border-top:1px solid #333;padding:18px 0;text-align:center;font-size:12px;color:#888}
.footer .copy a{color:#aaa}
.footer .logo-mini{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.footer .logo-mini img{height:40px;filter:brightness(0) invert(1)}
.footer .logo-mini span{color:#fff;font-size:18px;font-weight:600}
.zhaiyao{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.sansan{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;max-width:900px;margin:0 auto}
/* ===== 响应式 ===== */
@media (max-width:992px){
  .container{padding:0 15px}
  .header .container{height:64px;justify-content: space-between;}
  .logo img{height:42px}
  .mainnav{position:fixed;top:0;right:-100%;width:75%;max-width:300px;height:100vh;background:#1a1a1a;flex-direction:column;justify-content:flex-start;transition:right .3s;z-index:200;padding-top:64px}
  .mainnav.open{right:0}
  .mainnav ul{flex-direction:column;align-items:stretch;width:100%}
  .mainnav > ul > li > a{color:#fff;line-height:48px;padding:0 20px;border-bottom:1px solid #333}
  .mainnav > ul > li > a::after{display:none}
  .mainnav .sub-menu{position:static;background:#111;border:0;box-shadow:none;display:none;padding-left:20px}
  .mainnav li:hover .sub-menu{display:block}
  .mainnav .sub-menu a{color:#bbb;border-color:#222;padding:10px 18px}
  .menu-toggle{display:block}
  .menu-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:150}
  .menu-mask.open{display:block}
  .home-banner{padding:50px 0}
  .home-banner .container{flex-direction:column;text-align:center}
  .home-banner h1{font-size:32px}
  .home-banner .tagline{font-size:16px}
  .home-banner .features{justify-content:center}
  .home-banner .bn-img{max-width:90%}
  .cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}
  .prod-detail .container{grid-template-columns:1fr;gap:30px}
  .single-page .container{grid-template-columns:1fr}
  .sidemenu{display:flex;overflow-x:auto;gap:0}
  .sidemenu h4{display:none}
  .sidemenu a{flex:0 0 auto;white-space:nowrap;border-bottom:0;border-right:1px solid #f5f5f5}
  .footer .container{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:600px){
    .sisi{display:none;}
    .sansan{display:block;grid-template-columns:repeat(3,1fr);gap:30px;max-width:900px;margin:0 auto}
    .zhaiyao{display:block;align-items:center}
    .zhaiyao .section-title{text-align:center !important;}
    .section-title h2{font-size:20px;}
    .zhaiyao img{margin-top:15px;}
  .cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .topbar .container{justify-content:center;text-align:center}
  .topbar a{margin:0 8px}
  .gbook-form{padding:25px 20px}
  .gbook-form .row{grid-template-columns:1fr;gap:6px}
  .footer .container{grid-template-columns:1fr}
  .page-banner h1{font-size:24px}
  .prod-info h1{font-size:22px}
}