/* ========================================
   郑州永亚智能设备有限公司 - 主样式表
   纯净版 v2.0
   ======================================== */

/* ---- 重置 & 基础 ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px;scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#333;background:#fff;line-height:1.6}
a{color:#1a4b8c;text-decoration:none;transition:color .3s}
a:hover{color:#e60012}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 15px}
.clearfix::after{content:"";display:table;clear:both}

/* ---- 顶部工具栏 ---- */
.top-bar{background:#1a4b8c;color:#fff;font-size:12px;padding:6px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar a{color:rgba(255,255,255,.8)}
.top-bar a:hover{color:#fff}
.top-bar .hotline{font-size:14px;font-weight:bold}

/* ---- 头部 ---- */
.header{background:#fff;border-bottom:3px solid #1a4b8c;padding:15px 0}
.header .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.logo img{height:50px;width:auto}
.header-right{text-align:right;font-size:12px;color:#666}
.header-right .tel{font-size:22px;color:#e60012;font-weight:bold;margin-top:5px}

/* ---- 导航 ---- */
.nav-bar{background:#2c5fa1;position:sticky;top:0;z-index:1000}
.nav-bar .container{display:flex}
.nav-bar a{display:block;padding:12px 20px;color:#fff;font-size:15px;position:relative}
.nav-bar a:hover,.nav-bar a.active{background:#1a4b8c}
.nav-bar .has-dropdown:hover .dropdown{display:block}
.dropdown{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid #e0e0e0;min-width:160px;z-index:100;box-shadow:0 4px 12px rgba(0,0,0,.1)}
.dropdown a{color:#333;padding:10px 16px;font-size:13px;border-bottom:1px solid #f0f0f0}
.dropdown a:hover{background:#f5f5f5;color:#e60012}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:24px;padding:10px 15px;cursor:pointer}

/* ---- Banner ---- */
.banner{width:100%;overflow:hidden;position:relative}
.banner img{width:100%;min-height:200px;object-fit:cover}

/* ---- 面包屑 ---- */
.breadcrumb{padding:12px 0;font-size:13px;color:#999;border-bottom:1px solid #f0f0f0}
.breadcrumb a{color:#666}
.breadcrumb a:hover{color:#1a4b8c}

/* ---- 首页板块 ---- */
.section{padding:40px 0}
.section-title{text-align:center;font-size:24px;color:#1a4b8c;margin-bottom:10px;font-weight:bold}
.section-title::after{content:"";display:block;width:60px;height:3px;background:#e60012;margin:10px auto}
.section-desc{text-align:center;color:#999;margin-bottom:30px;font-size:14px}

/* ---- 产品分类网格 ---- */
.pro-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}
.pro-card{text-align:center;padding:20px;border:1px solid #eee;border-radius:8px;transition:all .3s}
.pro-card:hover{border-color:#1a4b8c;box-shadow:0 4px 15px rgba(26,75,140,.1);transform:translateY(-3px)}
.pro-card img{width:80px;height:80px;margin:0 auto 10px;object-fit:contain}
.pro-card h3{font-size:15px;color:#333;margin-bottom:5px}
.pro-card p{font-size:12px;color:#999}
.pro-card em{display:inline-block;margin-top:8px;font-size:12px;color:#1a4b8c;font-style:normal}

/* ---- 新闻列表 ---- */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.news-card{border:1px solid #eee;border-radius:6px;overflow:hidden;transition:all .3s}
.news-card:hover{border-color:#1a4b8c;box-shadow:0 2px 10px rgba(0,0,0,.08)}
.news-card .thumb{width:100%;height:180px;object-fit:cover}
.news-card .info{padding:15px}
.news-card h3{font-size:16px;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h3 a{color:#333}
.news-card h3 a:hover{color:#e60012}
.news-card .meta{font-size:12px;color:#999;margin-bottom:8px}
.news-card .summary{font-size:13px;color:#666;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---- 列表页（左侧列表+右侧栏） ---- */
.page-body{display:grid;grid-template-columns:1fr 300px;gap:30px;padding:30px 0}
.page-body.full{grid-template-columns:1fr}

/* ---- 侧栏 ---- */
.sidebar .widget{border:1px solid #eee;border-radius:6px;overflow:hidden;margin-bottom:20px}
.sidebar .widget-title{background:#1a4b8c;color:#fff;padding:10px 15px;font-size:14px;font-weight:bold}
.sidebar .widget-content{padding:10px}
.sidebar .widget-content li{padding:8px 0;border-bottom:1px solid #f5f5f5}
.sidebar .widget-content li:last-child{border:none}
.sidebar .widget-content a{color:#666;font-size:13px;display:block}
.sidebar .widget-content a:hover{color:#e60012}

/* ---- 文章详情 ---- */
.article-header{padding:30px 0 20px;text-align:center}
.article-header h1{font-size:22px;color:#333;margin-bottom:10px}
.article-meta{font-size:13px;color:#999}
.article-body{padding:20px 0;line-height:2;font-size:15px;color:#444}
.article-body img{max-width:100%;margin:15px auto;border-radius:4px}
.article-body p{margin-bottom:15px}

/* ---- 关于我们 ---- */
.page-content{padding:30px 0;line-height:2;font-size:15px;color:#444}
.page-content h2{font-size:20px;color:#1a4b8c;margin:25px 0 15px}

/* ---- 视频中心 ---- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.video-card{border:1px solid #eee;border-radius:6px;overflow:hidden;transition:all .3s}
.video-card:hover{box-shadow:0 2px 10px rgba(0,0,0,.08)}
.video-card video{width:100%;height:180px;object-fit:cover;background:#000}
.video-card .info{padding:12px}
.video-card h3{font-size:14px;margin-bottom:5px}
.video-card .meta{font-size:12px;color:#999}

/* ---- 分页 ---- */
.pagination{text-align:center;padding:30px 0}
.pagination a,.pagination span{display:inline-block;padding:6px 14px;margin:0 3px;border:1px solid #ddd;border-radius:4px;font-size:13px;color:#333}
.pagination a:hover{background:#1a4b8c;color:#fff;border-color:#1a4b8c}
.pagination .current{background:#1a4b8c;color:#fff;border-color:#1a4b8c}

/* ---- 页脚 ---- */
.footer{background:#1a2a3a;color:rgba(255,255,255,.7);padding:40px 0 20px;margin-top:40px}
.footer .container{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.footer h4{color:#fff;font-size:16px;margin-bottom:15px}
.footer p{font-size:13px;line-height:1.8}
.footer a{color:rgba(255,255,255,.7);font-size:13px}
.footer a:hover{color:#fff}
.footer .copyright{grid-column:1/-1;text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);margin-top:20px;font-size:12px}
.footer .copyright a{color:rgba(255,255,255,.5)}

/* ---- 响应式 ---- */
@media(max-width:768px){
    .nav-bar .container{flex-wrap:wrap}
    .nav-bar a{display:none;width:100%}
    .nav-bar a.mobile-menu-btn{display:block;width:auto}
    .nav-bar.open a{display:block}
    .dropdown{position:static;box-shadow:none;display:none}
    .nav-bar.open .has-dropdown:hover .dropdown{display:block}
    .page-body{grid-template-columns:1fr}
    .footer .container{grid-template-columns:1fr 1fr}
    .pro-grid{grid-template-columns:repeat(2,1fr)}
    .header .container{flex-direction:column;text-align:center}
    .header-right{margin-top:10px;text-align:center}
}
@media(max-width:480px){
    .pro-grid{grid-template-columns:1fr}
    .footer .container{grid-template-columns:1fr}
    .news-grid{grid-template-columns:1fr}
}