/* ============================================================
   九运离火科技官网 - 新版样式（参考 bacnc.cn 布局配色）
   主色：#d92725 深红 | 辅助：#8b0c09 | 文字：#333/#666/#999
   页脚：#333 深灰 | 内容区 1240px
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Segoe UI",Arial,sans-serif;font-size:14px;color:#333;line-height:1.7;background:#fff;}
a{text-decoration:none;color:#333;transition:color .3s;}
a:hover{color:#d92725;}
img{max-width:100%;border:0;display:block;}
ul,ol{list-style:none;}
.clearfix:after{content:'';display:block;clear:both;}
.container{max-width:1240px;margin:0 auto;padding:0 20px;}

/* ========== 顶部导航（白底固定） ========== */
.site-header{position:fixed;top:0;left:0;width:100%;background:#fff;z-index:999;box-shadow:0 0 5px rgba(0,0,0,.1);}
.header-inner{max-width:1240px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:80px;}
.logo{display:flex;align-items:center;}
.logo img{height:54px;}
.logo .logo-txt{margin-left:12px;line-height:1.3;}
.logo .logo-txt b{display:block;font-size:22px;color:#333;font-weight:700;}
.logo .logo-txt span{font-size:12px;color:#999;letter-spacing:1px;}
.main-nav{display:flex;}
.main-nav>li{position:relative;}
.main-nav>li>a{display:block;padding:0 1vw;line-height:80px;font-size:16px;color:#333;position:relative;}
.main-nav>li>a:after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:#d92725;transition:all .4s;}
.main-nav>li:hover>a,.main-nav>li.active>a{color:#d92725;}
.main-nav>li:hover>a:after,.main-nav>li.active>a:after{width:100%;left:0;}
.main-nav .sub-nav{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);background:rgba(255,255,255,.95);width:180px;box-shadow:0 5px 5px rgba(0,0,0,.1);}
.main-nav>li:hover .sub-nav{display:block;}
.main-nav .sub-nav:empty{display:none !important;}
.main-nav .sub-nav li a{display:block;text-align:center;line-height:40px;font-size:14px;color:#666;}
.main-nav .sub-nav li a:hover{color:#fff;background:#d92725;}
.header-lang{margin-left:20px;position:relative;}
.header-lang .lang-btn{cursor:pointer;border:1px solid #d92725;color:#d92725;border-radius:4px;padding:5px 14px;font-size:13px;display:flex;align-items:center;gap:5px;}
.header-lang .lang-btn:hover{background:#d92725;color:#fff;}
.header-lang .lang-dropdown{display:none;position:absolute;top:120%;right:0;background:#fff;border:1px solid #eee;box-shadow:0 3px 8px rgba(0,0,0,.1);min-width:110px;}
.header-lang .lang-dropdown a{display:block;line-height:36px;padding:0 16px;font-size:13px;color:#333;}
.header-lang .lang-dropdown a:hover{background:#f6f6f6;color:#d92725;}
/* 汉堡菜单按钮（默认隐藏，手机端显示） */
.menu-toggle{display:none;width:30px;height:22px;flex-direction:column;justify-content:space-between;cursor:pointer;z-index:1000;}
.menu-toggle span{display:block;width:100%;height:3px;background:#333;border-radius:2px;transition:all .3s;}
.menu-toggle.active span:nth-child(1){transform:translateY(9.5px) rotate(45deg);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:translateY(-9.5px) rotate(-45deg);}

/* ========== Banner 轮播 ========== */
.banner{margin-top:80px;position:relative;}
.banner .swiper-slide{position:relative;}
.banner .swiper-slide img{width:100%;height:520px;object-fit:cover;}
.banner .swiper-pagination{position:absolute;bottom:24px;left:0;right:0;text-align:center;z-index:5;}
.banner .swiper-pagination-bullet{width:10px;height:10px;border-radius:50%;background:#999;opacity:1;margin:0 5px;display:inline-block;cursor:pointer;}
.banner .swiper-pagination-bullet-active{background:#d92725;}

/* ========== 搜索栏 ========== */
.search-bar{background:#f6f6f6;padding:14px 0;border-bottom:1px solid #eee;}
.search-bar .inner{display:flex;align-items:center;justify-content:center;gap:14px;}
.search-bar .hot{font-size:13px;color:#999;}
.search-bar .hot a{color:#d92725;margin:0 6px;}
.search-bar form{display:flex;}
.search-bar input[type=text]{width:320px;height:38px;border:1px solid #ddd;border-right:0;padding:0 14px;font-size:14px;outline:none;}
.search-bar button{height:38px;padding:0 24px;border:0;background:#d92725;color:#fff;font-size:14px;cursor:pointer;}
.search-bar button:hover{background:#b91f1d;}

/* ========== 板块标题 ========== */
.sec-title{text-align:center;margin:60px 0 36px;}
.sec-title h2{font-size:30px;font-weight:700;color:#333;}
.sec-title .line{display:block;width:50px;height:2px;background:#d92725;margin:12px auto 0;}
.sec-title p{font-size:16px;color:#666;margin-top:10px;}

/* ========== 关于我们 ========== */
.about-sec{padding:0 0 40px;}
.about-sec .inner{display:flex;gap:50px;align-items:center;}
.about-sec .about-img{flex:0 0 50%;}
.about-sec .about-img img{width:100%;border-radius:2px;}
.about-sec .about-txt{flex:1;}
.about-sec .about-txt h3{font-size:26px;color:#d92725;margin-bottom:18px;}
.about-sec .about-txt p{color:#666;font-size:15px;margin-bottom:14px;}
.about-sec .btn-more{display:inline-block;margin-top:8px;padding:10px 30px;background:#d92725;color:#fff;font-size:14px;}
.about-sec .btn-more:hover{background:#b91f1d;color:#fff;}

/* ========== 产品网格 ========== */
.pro-grid{display:flex;flex-wrap:wrap;margin:0 -12px;}
.pro-grid .pro-item{flex:0 0 33.333%;padding:12px;}
.pro-grid .pro-card{border:1px solid #eee;overflow:hidden;transition:all .3s;background:#fff;}
.pro-grid .pro-card:hover{box-shadow:0 6px 20px rgba(0,0,0,.12);transform:translateY(-4px);}
.pro-grid .pro-card .pic{overflow:hidden;height:230px;}
.pro-grid .pro-card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.pro-grid .pro-card:hover .pic img{transform:scale(1.08);}
.pro-grid .pro-card h3{text-align:center;font-size:16px;font-weight:700;padding:16px 10px;line-height:1.5;}

/* ========== 加工服务（白底区） ========== */
.service-sec{background:#fff;padding:70px 0;}
.service-sec .sec-title h2{color:#333;}
.service-sec .sec-title p{color:#666;}
.service-sec .sv-grid{display:flex !important;flex-wrap:wrap;margin:0 -12px;}
.service-sec .sv-item{flex:0 0 25%;max-width:25%;padding:12px;box-sizing:border-box;}
.service-sec .sv-card{background:rgba(255,255,255,.95);padding:0 0 20px;text-align:center;transition:all .3s;}
.service-sec .sv-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.25);}
.service-sec .sv-card .pic{height:150px;overflow:hidden;}
.service-sec .sv-card .pic img{width:100%;height:100%;object-fit:cover;}
.service-sec .sv-card h3{font-size:17px;font-weight:700;margin:16px 0 8px;}
.service-sec .sv-card p{font-size:13px;color:#666;padding:0 14px;height:40px;overflow:hidden;}
.service-sec .sv-card .more{display:inline-block;margin-top:12px;font-size:13px;color:#d92725;border:1px solid #d92725;padding:4px 18px;border-radius:2px;}
.service-sec .sv-card .more:hover{background:#d92725;color:#fff;}

/* ========== 车间设备图集 ========== */
.equip-sec{padding-bottom:60px;}
.equip-grid{display:flex;flex-wrap:wrap;margin:0 -8px;}
.equip-grid .eq-item{flex:0 0 25%;padding:8px;}
.equip-grid .eq-card{overflow:hidden;position:relative;height:200px;}
.equip-grid .eq-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.equip-grid .eq-card:hover img{transform:scale(1.1);}
.equip-grid .eq-card span{position:absolute;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);color:#fff;text-align:center;line-height:34px;font-size:13px;}

/* ========== 新闻中心 ========== */
.news-sec{padding:0 0 60px;}
.news-list{max-width:900px;margin:0 auto;}
.news-item{display:flex;align-items:center;padding:22px 0;border-bottom:1px dashed #eee;}
.news-item .date{flex:0 0 110px;text-align:center;border-right:1px solid #eee;margin-right:26px;}
.news-item .date b{display:block;font-size:32px;color:#333;line-height:1.1;}
.news-item .date span{font-size:14px;color:#999;}
.news-item .txt{flex:1;overflow:hidden;}
.news-item .txt h3{font-size:17px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.news-item .txt h3 a:hover{color:#d92725;}
.news-item .txt p{font-size:13px;color:#999;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ========== 页脚（深灰） ========== */
.site-footer{background:#333;color:#868686;margin-top:60px;}
.footer-top{display:flex;justify-content:space-between;flex-wrap:wrap;padding:48px 0 30px;}
.footer-top .f-col{flex:1;min-width:180px;padding-right:30px;}
.footer-top h4{font-size:18px;color:#fff;margin-bottom:15px;}
.footer-top a{display:block;font-size:14px;color:#868686;line-height:2.2;}
.footer-top a:hover{color:#fff;}
.footer-top .f-contact p{font-size:14px;line-height:2.2;}
.footer-top .f-contact a{color:#d92725;}
.footer-line{border-top:1px solid rgba(255,255,255,.1);}
.footer-bottom{max-width:1240px;margin:0 auto;padding:18px 20px;font-size:13px;color:#868686;display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;}
.footer-bottom a{color:#868686;}
.footer-bottom a:hover{color:#fff;}

/* ========== 侧边圆形悬浮按钮 ========== */
.yb_conct{position:fixed;right:20px;top:50%;margin-top:-120px;z-index:998;}
.yb_bar ul{list-style:none;margin:0;padding:0;}
.yb_bar li{position:relative;width:50px;height:50px;border-radius:50%;cursor:pointer;color:#fff;font-size:22px;box-shadow:0 4px 12px rgba(0,0,0,.18);margin-bottom:12px;line-height:50px;text-align:center;overflow:visible;}
.yb_bar li a{display:block;width:50px;height:50px;border-radius:50%;color:#fff;text-decoration:none;line-height:50px;text-align:center;}
.yb_bar .yb_phone{background:#d92725;}
.yb_bar .yb_wx{background:#1aad19;}
.yb_bar .yb_email{background:#1296db;}
.yb_bar .yb_top{background:#666;}
/* 弹出的气泡提示（默认隐藏，JS控制显示） */
.yb_bar .yb-tip{position:absolute;right:58px;top:0;height:50px;line-height:50px;background:rgba(0,0,0,.82);color:#fff;font-size:13px;padding:0 14px;border-radius:6px;white-space:nowrap;display:none;pointer-events:none;}
.yb_bar .yb-tip:after{content:'';position:absolute;right:-6px;top:50%;margin-top:-5px;border:6px solid transparent;border-left-color:rgba(0,0,0,.82);border-right:0;}
.yb_bar li.show-tip .yb-tip{display:block;}

/* ========== 内页通用 ========== */
.page-banner{height:180px;background:#333 url('/static/jylh_assets/slide_3.svg') no-repeat center/cover;display:flex;align-items:center;justify-content:center;margin-top:80px;}
.page-banner h1{color:#fff;font-size:30px;font-weight:700;}
.crumb{max-width:1240px;margin:0 auto;padding:14px 20px;font-size:13px;color:#999;}
.crumb a{color:#999;}
.crumb a:hover{color:#d92725;}
.page-main{max-width:1240px;margin:0 auto;padding:10px 20px 50px;}
.page-main .content{font-size:15px;color:#333;line-height:1.9;}
.page-main .content h3{color:#d92725;font-size:19px;margin:22px 0 10px;}
.page-main .content table{width:100%;border-collapse:collapse;margin:14px 0;}
.page-main .content table th,.page-main .content table td{border:1px solid #ddd;padding:9px 12px;font-size:14px;}
.page-main .content table th{background:#f6f6f6;font-weight:700;color:#333;}

/* 列表页 */
.list-page{max-width:1240px;margin:0 auto;padding:20px;display:flex;gap:30px;}
.list-left{flex:0 0 220px;}
.list-left h3{font-size:18px;color:#fff;background:#d92725;text-align:center;line-height:46px;}
.list-left ul li a{display:block;line-height:44px;padding-left:18px;border-bottom:1px solid #eee;font-size:14px;color:#666;}
.list-left ul li a:hover,.list-left ul li.active a{background:#d92725;color:#fff;}
.list-right{flex:1;}
.list-right .list-title{font-size:22px;color:#333;padding-bottom:12px;border-bottom:2px solid #d92725;margin-bottom:18px;}
.list-right .item{display:flex;gap:18px;padding:18px 0;border-bottom:1px dashed #eee;}
.list-right .item .pic{flex:0 0 160px;height:110px;overflow:hidden;}
.list-right .item .pic img{width:100%;height:100%;object-fit:cover;}
.list-right .item h3{font-size:16px;font-weight:700;}
.list-right .item h3 a:hover{color:#d92725;}
.list-right .item p{font-size:13px;color:#999;margin-top:8px;}
.list-right .item time{font-size:12px;color:#bbb;margin-top:8px;display:block;}

/* 分页 */
.pagination{text-align:center;margin:30px 0;}
.pagination a,.pagination span{display:inline-block;min-width:34px;height:34px;line-height:34px;border:1px solid #ddd;margin:0 3px;padding:0 8px;font-size:13px;color:#666;background:#fff;}
.pagination a:hover,.pagination .current{background:#d92725;border-color:#d92725;color:#fff;}

/* 详情页 */
.detail-box{max-width:900px;margin:0 auto;}
.detail-box h1{font-size:24px;color:#333;text-align:center;padding:10px 0 6px;}
.detail-meta{text-align:center;color:#999;font-size:13px;padding-bottom:18px;border-bottom:1px solid #eee;margin-bottom:20px;}
.detail-box .content{font-size:15px;color:#333;line-height:2;}
.detail-box .content h3{color:#d92725;font-size:18px;margin:20px 0 8px;}
.detail-box .content table{width:100%;border-collapse:collapse;margin:14px 0;}
.detail-box .content th,.detail-box .content td{border:1px solid #ddd;padding:8px 12px;font-size:14px;}
.detail-box .content th{background:#f6f6f6;}
.detail-nav{display:flex;justify-content:space-between;margin-top:30px;padding-top:16px;border-top:1px solid #eee;font-size:14px;color:#999;}
.detail-nav a{color:#333;max-width:45%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.detail-nav a:hover{color:#d92725;}

/* 留言页 */
.msg-box{max-width:700px;margin:0 auto;}
.msg-box h3{text-align:center;font-size:24px;margin-bottom:8px;}
.msg-box .tip{text-align:center;color:#999;font-size:14px;margin-bottom:24px;}
.msg-box dl{display:flex;margin-bottom:16px;align-items:center;}
.msg-box dt{flex:0 0 90px;text-align:right;padding-right:14px;color:#333;font-size:14px;}
.msg-box dd{flex:1;}
.msg-box input[type=text],.msg-box input[type=tel],.msg-box textarea{width:100%;height:40px;border:1px solid #ddd;padding:0 12px;font-size:14px;outline:none;}
.msg-box textarea{height:120px;padding:10px 12px;resize:vertical;}
.msg-box input:focus,.msg-box textarea:focus{border-color:#d92725;}
.msg-box .submit{width:160px;height:42px;background:#d92725;border:0;color:#fff;font-size:15px;cursor:pointer;margin:10px auto 0;display:block;}
.msg-box .submit:hover{background:#b91f1d;}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  .pro-grid .pro-item{flex:0 0 50%;}
  .service-sec .sv-item{flex:0 0 50%;}
  .equip-grid .eq-item{flex:0 0 50%;}
  .list-page{flex-direction:column;}
  .list-left{flex:auto;width:100%;}
  .list-left ul{display:flex;flex-wrap:wrap;}
  .list-left ul li{border-bottom:0;}
  .list-left ul li a{line-height:38px;padding:0 14px;}
}
@media (max-width:768px){
  .header-inner{height:60px;padding:0 15px;}
  .banner{margin-top:60px;}
  .banner .swiper-slide img{height:240px;}
  .logo img{height:40px;}
  .logo .logo-txt b{font-size:16px;}
  .logo .logo-txt span{display:none;}
  /* 手机端：显示汉堡按钮 */
  .menu-toggle{display:flex;}
  /* 手机端：导航默认隐藏，点击汉堡后下拉展开 */
  .main-nav{
    display:none;position:fixed;top:60px;left:0;right:0;
    flex-direction:column;background:#fff;
    border-top:1px solid #eee;max-height:80vh;overflow-y:auto;
    box-shadow:0 4px 12px rgba(0,0,0,.1);z-index:999;
  }
  .main-nav.mobile-open{display:flex;}
  .main-nav>li{width:100%;}
  .main-nav>li>a{line-height:48px;font-size:15px;padding:0 20px;border-bottom:1px solid #f5f5f5;}
  /* 手机端子菜单改为点击展开（非hover） */
  .main-nav>li:hover .sub-nav{display:none;}
  .main-nav .sub-nav{
    position:static;transform:none;width:100%;
    background:#fafafa;box-shadow:none;display:none;
  }
  .main-nav>li.sub-open .sub-nav{display:block;}
  .main-nav .sub-nav li a{line-height:42px;text-align:left;padding-left:40px;font-size:14px;}
  /* 手机端语言栏保留显示 */
  .header-lang{margin-left:10px;}
  .header-lang .lang-btn{padding:4px 10px;font-size:12px;}
  .header-lang .lang-dropdown{right:auto;left:50%;transform:translateX(-50%);}
  .about-sec .inner{flex-direction:column;gap:24px;}
  .about-sec .about-img{flex:auto;width:100%;}
  .pro-grid .pro-item{flex:0 0 100%;}
  .service-sec .sv-item{flex:0 0 100%;}
  .equip-grid .eq-item{flex:0 0 50%;}
  .news-item{flex-direction:row;}
  .news-item .date{flex:0 0 70px;margin-right:16px;}
  .news-item .date b{font-size:24px;}
  .search-bar input[type=text]{width:200px;}
  .sec-title{margin:40px 0 24px;}
  .sec-title h2{font-size:24px;}
  .footer-top .f-col{min-width:46%;}
  .search-bar .hot{display:none;}
}