/*
 Theme Name: platinum-chem
 Theme URI: https://你的域名.com
 Author: 你的名字
 Author URI: https://你的域名.com
 Description: 有机膦化工企业官网主题
 Version: 1.0
 Text Domain: platinum-chem
*/
 Theme Name: platinum-chem
 Theme URI: https://bzqchem.com
 Author: 企业建站
 Description: 精细化工/有机膦催化剂企业官网模板，备案合规无海外社交链接，移动端自适应
 Version: 1.0
 Text Domain: platinum-chem
*/
*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",sans-serif;}
body{color:#333;background:#fff;font-size:15px;line-height:1.8;}
a{text-decoration:none;color:#225092;transition:0.3s;}
a:hover{color:#0f3266;}
ul{list-style:none;}
img{max-width:100%;display:block;}
.container{width:1200px;margin:0 auto;padding:0 15px;}
.row{display:flex;flex-wrap:wrap;margin:0 -15px;}
.col-4{width:33.33%;padding:0 15px;}

/* 头部导航 */
.site-header{background:#0f3266;position:sticky;top:0;z-index:99;}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:70px;}
.logo h1{color:#fff;font-size:22px;font-weight:normal;}
.nav-list{display:flex;}
.nav-list li{margin:0 18px;}
.nav-list a{color:#fff;font-size:15px;}
.nav-list a:hover{color:#7bb3f0;}

/* 轮播Banner */
.main-banner{height:520px;display:flex;align-items:center;background-size:cover;background-position:center;}
.banner-text{color:#fff;padding-left:80px;}
.banner-text h1{font-size:42px;margin-bottom:15px;letter-spacing:1px;}
.banner-text p{font-size:18px;margin-bottom:30px;opacity:0.95;}
.btn-blue{display:inline-block;background:#225092;color:#fff;padding:12px 32px;border-radius:2px;}
.btn-blue:hover{background:#0f3266;color:#fff;}

/* 通用板块标题 */
.title{text-align:center;font-size:30px;color:#0f3266;margin-bottom:45px;padding-top:60px;}

/* 优势板块 */
.advantage-wrap{padding-bottom:70px;background:#f8fafc;}
.advantage-item{text-align:center;background:#fff;padding:35px 20px;border-radius:4px;}
.advantage-item img{width:70px;margin:0 auto 20px;}
.advantage-item h3{font-size:19px;color:#0f3266;margin-bottom:12px;}

/* 产品板块 */
.product-index{padding-bottom:70px;}
.pro-row{display:flex;gap:30px;justify-content:center;}
.pro-item{width:32%;border:1px solid #eee;overflow:hidden;}
.pro-item img{height:220px;width:100%;object-fit:cover;}
.pro-item h4{font-size:18px;padding:15px 15px 8px;color:#0f3266;}
.pro-item p{padding:0 15px 12px;color:#666;font-size:14px;}
.pro-item a{margin:0 15px 18px;display:inline-block;border:1px solid #225092;padding:7px 18px;font-size:14px;}
.pro-item a:hover{background:#0f3266;color:#fff;}

/* 研发板块 */
.rnd-wrap{padding:70px 0;background-size:cover;background-position:center;background-attachment:fixed;color:#fff;margin:60px 0;}
.rnd-left,.rnd-right{width:50%;padding:0 15px;}
.rnd-right h2{font-size:28px;margin-bottom:20px;}
.rnd-right p{margin-bottom:25px;opacity:0.95;line-height:1.9;}

/* 内页通用banner */
.page-banner{height:240px;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center;}
.page-banner h1{color:#fff;font-size:36px;}
.page-content{padding:60px 0 80px;}
.page-content h2{font-size:26px;color:#0f3266;margin:30px 0 15px;}
.page-content h3{font-size:20px;color:#225092;margin:25px 0 12px;}
.page-content p{margin-bottom:14px;text-indent:2em;}
.cooper-img{margin:25px 0;}
.cooper-img span{display:block;text-align:center;color:#666;margin-top:8px;font-size:14px;}

/* 页脚 */
.site-footer{background:#0f3266;color:#eee;padding:50px 0 20px;}
.foot-row{display:flex;gap:80px;margin-bottom:40px;}
.foot-col h4{font-size:18px;margin-bottom:20px;color:#fff;}
.foot-col p{margin-bottom:10px;font-size:14px;opacity:0.9;}
.foot-col a{display:block;color:#eee;margin-bottom:9px;font-size:14px;opacity:0.9;}
.foot-col a:hover{color:#7bb3f0;}
.copyright{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,0.15);font-size:14px;opacity:0.85;}