/* =========================================================
   沧州市大唐管业有限公司 · 官方网站 PC 端样式
   设计语言：现代工业 —— 深邃海军蓝 + 活力工业橙 + 钢灰
   ========================================================= */

/* ---------- 基础 ---------- */
:root{
  --navy:#0d2742;      /* 主深蓝 */
  --navy-2:#143456;    /* 深蓝浅一档 */
  --navy-3:#1c4470;    /* 蓝 */
  --accent:#f0841a;    /* 活力橙 */
  --accent-2:#e06f0c;  /* 橙深 */
  --steel:#4a5b6c;     /* 钢灰 */
  --steel-light:#7d8a99;
  --line:#e3e8ee;      /* 分隔线 */
  --bg:#f5f7fa;        /* 浅灰底 */
  --white:#ffffff;
  --radius:10px;
  --shadow:0 8px 28px rgba(13,39,66,.08);
  --shadow-lg:0 14px 44px rgba(13,39,66,.14);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Helvetica,Arial,sans-serif;
  color:#22303c;background:#fff;font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{text-decoration:none;color:inherit;}
ul,ol{list-style:none;}
.container{width:1200px;margin:0 auto;}
.btn{
  display:inline-block;padding:12px 30px;border-radius:6px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  transition:.25s;letter-spacing:.5px;
}
.btn:hover{background:var(--accent-2);transform:translateY(-2px);box-shadow:0 8px 20px rgba(240,132,26,.35);}
.btn-line{
  display:inline-block;padding:11px 28px;border-radius:6px;border:1px solid rgba(255,255,255,.6);
  color:#fff;font-size:15px;transition:.25s;
}
.btn-line:hover{background:#fff;color:var(--navy);}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--navy);color:#c8d4e0;font-size:13px;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:36px;}
.topbar a{color:#c8d4e0;}
.topbar .hotline{color:#fff;font-weight:700;}
.topbar .hotline b{color:var(--accent);font-size:16px;margin-left:6px;}
.topbar .switch a{display:inline-block;margin-left:14px;padding:2px 10px;border:1px solid rgba(255,255,255,.35);border-radius:3px;font-size:12px;}
.topbar .switch a:hover{border-color:var(--accent);color:#fff;}

/* ---------- 主导航 ---------- */
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100;box-shadow:0 2px 10px rgba(13,39,66,.04);}
.header .container{display:flex;align-items:center;justify-content:space-between;height:84px;}
.logo{display:flex;align-items:center;}
.logo .mark{
  width:52px;height:52px;border-radius:8px;background:linear-gradient(135deg,var(--navy),var(--navy-3));
  display:flex;align-items:center;justify-content:center;color:#fff;margin-right:12px;flex:none;
}
.logo .mark svg{width:32px;height:32px;}
.logo .name{line-height:1.25;}
.logo .name b{font-size:24px;color:var(--navy);letter-spacing:1px;}
.logo .name span{font-size:12px;color:var(--steel-light);letter-spacing:3px;}
.main-nav>ul{display:flex;}
.main-nav>ul>li{position:relative;}
.main-nav>ul>li>a{
  display:block;padding:30px 20px;color:#2b3a49;font-size:15px;font-weight:600;
  transition:.25s;border-bottom:3px solid transparent;
}
.main-nav>ul>li>a:hover,.main-nav>ul>li.active>a{color:var(--accent);border-bottom-color:var(--accent);}
.main-nav>ul>li.has-sub>a::after{content:"";display:inline-block;width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-left:6px;vertical-align:2px;}
.subnav{
  position:absolute;top:100%;left:0;min-width:200px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);border-radius:6px;padding:6px 0;opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;
}
.main-nav>ul>li:hover .subnav{opacity:1;visibility:visible;transform:translateY(0);}
.subnav li a{display:block;padding:9px 20px;color:#33424f;font-size:14px;transition:.2s;}
.subnav li a:hover{background:var(--bg);color:var(--accent);padding-left:26px;}

/* ---------- Hero (首页) ---------- */
.hero{position:relative;height:560px;overflow:hidden;}
.hero img{width:100%;height:100%;object-fit:cover;}
.hero .mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,39,66,.88),rgba(13,39,66,.45) 65%,rgba(13,39,66,.15));}
.hero .container{position:relative;height:100%;display:flex;flex-direction:column;justify-content:center;}
.hero .tag{display:inline-block;width:64px;height:3px;background:var(--accent);margin-bottom:22px;}
.hero h1{color:#fff;font-size:44px;line-height:1.35;font-weight:800;max-width:720px;margin-bottom:18px;}
.hero p{color:#dbe6f2;font-size:16px;max-width:640px;margin-bottom:34px;}
.hero .ctas a{margin-right:16px;}

/* ---------- 内页横幅 ---------- */
.page-banner{position:relative;height:230px;overflow:hidden;background:var(--navy);}
.page-banner img{width:100%;height:100%;object-fit:cover;opacity:.35;}
.page-banner .mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,39,66,.9),rgba(28,68,112,.55));}
.page-banner .container{position:relative;height:100%;display:flex;flex-direction:column;justify-content:center;}
.page-banner h1{color:#fff;font-size:34px;font-weight:700;margin-bottom:8px;}
.page-banner p{color:#cfd9e6;font-size:15px;}

/* ---------- 面包屑 ---------- */
.crumbs{background:var(--bg);border-bottom:1px solid var(--line);}
.crumbs .container{display:flex;align-items:center;height:44px;font-size:13px;color:var(--steel-light);}
.crumbs a{color:var(--steel-light);}
.crumbs a:hover{color:var(--accent);}
.crumbs span.sep{margin:0 8px;}
.crumbs em{font-style:normal;color:var(--accent);}

/* ---------- 通用区块 ---------- */
.section{padding:76px 0;}
.section.gray{background:var(--bg);}
.sec-head{text-align:center;margin-bottom:48px;}
.sec-head .sub{display:inline-block;color:var(--accent);font-size:13px;letter-spacing:3px;margin-bottom:10px;font-weight:600;}
.sec-head h2{font-size:32px;color:var(--navy);font-weight:800;line-height:1.4;}
.sec-head .line{width:56px;height:3px;background:var(--accent);margin:16px auto 0;border-radius:2px;}
.sec-head .desc{color:var(--steel-light);font-size:14px;margin-top:12px;}

/* ---------- 数字条 ---------- */
.stats{background:linear-gradient(135deg,var(--navy),var(--navy-3));}
.stats .container{display:flex;}
.stat{flex:1;text-align:center;padding:40px 10px;border-right:1px solid rgba(255,255,255,.12);}
.stat:last-child{border-right:0;}
.stat b{font-size:44px;color:var(--accent);font-weight:800;}
.stat b small{font-size:20px;}
.stat p{color:#cfd9e6;margin-top:6px;font-size:15px;letter-spacing:1px;}

/* ---------- 关于 ---------- */
.about-wrap{display:flex;gap:60px;align-items:center;}
.about-pic{flex:0 0 540px;position:relative;}
.about-pic img{border-radius:var(--radius);box-shadow:var(--shadow-lg);}
.about-pic .exp{
  position:absolute;left:-24px;bottom:32px;background:var(--accent);color:#fff;border-radius:10px;
  padding:16px 22px;text-align:center;box-shadow:var(--shadow);
}
.about-pic .exp b{font-size:34px;font-weight:800;display:block;line-height:1;}
.about-pic .exp span{font-size:13px;opacity:.92;}
.about-text h2{font-size:28px;color:var(--navy);font-weight:800;line-height:1.5;margin-bottom:20px;}
.about-text h2 span{color:var(--accent);}
.about-text p{color:var(--steel);font-size:15px;margin-bottom:14px;}
.about-text .feats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0 28px;}
.about-text .feats li{display:flex;align-items:center;color:#2b3a49;font-size:14px;}
.about-text .feats li i{width:20px;height:20px;border-radius:50%;background:rgba(240,132,26,.15);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px;font-style:normal;font-weight:700;margin-right:10px;}

/* ---------- 核心优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.adv-card{background:#fff;border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow);border:1px solid var(--line);transition:.3s;position:relative;overflow:hidden;}
.adv-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--accent);transform:scaleX(0);transition:.3s;transform-origin:left;}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.adv-card:hover::before{transform:scaleX(1);}
.adv-card .ico{width:56px;height:56px;border-radius:12px;background:rgba(240,132,26,.12);display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
.adv-card .ico svg{width:30px;height:30px;stroke:var(--accent);}
.adv-card h3{font-size:18px;color:var(--navy);margin-bottom:10px;}
.adv-card p{font-size:14px;color:var(--steel-light);}

/* ---------- 产品 ---------- */
.prod-cats{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:36px;}
.prod-cats a{padding:8px 20px;border:1px solid var(--line);border-radius:30px;color:#33424f;font-size:14px;transition:.25s;}
.prod-cats a:hover,.prod-cats a.on{background:var(--accent);color:#fff;border-color:var(--accent);}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;box-shadow:var(--shadow);}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.prod-card .pic{overflow:hidden;position:relative;background:var(--bg);}
.prod-card .pic img{width:100%;height:230px;object-fit:cover;transition:.5s;}
.prod-card:hover .pic img{transform:scale(1.06);}
.prod-card .body{padding:20px;}
.prod-card .body h3{font-size:17px;color:var(--navy);margin-bottom:8px;}
.prod-card .body p{font-size:13px;color:var(--steel-light);height:54px;overflow:hidden;}
.prod-card .body a{display:inline-block;margin-top:12px;color:var(--accent);font-size:13px;font-weight:600;}
.prod-card .body a:hover{letter-spacing:.5px;}

/* ---------- 应用领域 ---------- */
.app-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.app-card{position:relative;border-radius:var(--radius);overflow:hidden;height:240px;box-shadow:var(--shadow);}
.app-card img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.app-card:hover img{transform:scale(1.08);}
.app-card .cap{position:absolute;inset:auto 0 0 0;background:linear-gradient(0deg,rgba(13,39,66,.9),rgba(13,39,66,.15));padding:34px 16px 16px;color:#fff;}
.app-card .cap h3{font-size:16px;font-weight:600;margin-bottom:4px;}
.app-card .cap span{font-size:12px;color:#c8d4e0;display:block;}

/* ---------- 设备 ---------- */
.equip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.equip-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;}
.equip-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.equip-card .pic{overflow:hidden;}
.equip-card .pic img{width:100%;height:210px;object-fit:cover;transition:.5s;}
.equip-card:hover .pic img{transform:scale(1.06);}
.equip-card .body{padding:18px;}
.equip-card .body h3{font-size:16px;color:var(--navy);}
.equip-card .body p{font-size:12px;color:var(--steel-light);margin-top:6px;}

/* ---------- 资讯 / 知识 ---------- */
.news-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);}
.panel .p-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:16px;border-bottom:2px solid var(--navy);margin-bottom:6px;}
.panel .p-head h3{font-size:20px;color:var(--navy);font-weight:700;}
.panel .p-head a{font-size:13px;color:var(--steel-light);}
.panel .p-head a:hover{color:var(--accent);}
.feat-news{display:flex;gap:18px;padding:18px 0;border-bottom:1px dashed var(--line);}
.feat-news .pic{flex:0 0 220px;overflow:hidden;border-radius:8px;}
.feat-news .pic img{width:100%;height:140px;object-fit:cover;}
.feat-news h4{font-size:16px;color:var(--navy);line-height:1.5;}
.feat-news h4 a:hover{color:var(--accent);}
.feat-news p{font-size:13px;color:var(--steel-light);margin-top:8px;height:60px;overflow:hidden;}
.news-list li{display:flex;justify-content:space-between;align-items:center;padding:15px 0;border-bottom:1px dashed var(--line);}
.news-list li a{font-size:15px;color:#33424f;max-width:78%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.news-list li a:hover{color:var(--accent);}
.news-list li time{font-size:12px;color:var(--steel-light);flex:none;}
.know-list li{padding:14px 0;border-bottom:1px dashed var(--line);}
.know-list li a{font-size:15px;color:#33424f;display:block;}
.know-list li a:hover{color:var(--accent);}
.know-list li span{font-size:12px;color:var(--steel-light);}

/* ---------- CTA 横幅 ---------- */
.cta{background:linear-gradient(135deg,var(--navy),var(--navy-3));position:relative;overflow:hidden;}
.cta::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:rgba(240,132,26,.15);}
.cta .container{display:flex;align-items:center;justify-content:space-between;padding:54px 0;position:relative;z-index:1;}
.cta h3{color:#fff;font-size:26px;font-weight:700;}
.cta p{color:#cfd9e6;margin-top:8px;font-size:14px;}
.cta .phone{text-align:right;color:#fff;}
.cta .phone span{font-size:13px;color:#c8d4e0;display:block;letter-spacing:2px;}
.cta .phone b{font-size:34px;color:var(--accent);font-weight:800;}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy);color:#b6c3d2;font-size:13px;}
.footer .container{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px;}
.footer h4{color:#fff;font-size:16px;margin-bottom:18px;position:relative;padding-bottom:10px;}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--accent);}
.footer .f-about p{line-height:1.9;}
.footer .f-about .logo-name{color:#fff;font-size:22px;font-weight:800;margin-bottom:14px;}
.footer ul li{padding:7px 0;}
.footer ul li a:hover{color:var(--accent);}
.footer ul li a::before{content:"·";color:var(--accent);margin-right:8px;}
.footer .f-contact li{padding:7px 0;display:flex;}
.footer .f-contact .lbl{flex:none;color:#7e8da0;width:60px;}
.footer .f-contact .tel{color:var(--accent);font-weight:700;font-size:18px;}
.footer .copy{border-top:1px solid rgba(255,255,255,.1);}
.footer .copy .container{display:flex;justify-content:space-between;align-items:center;padding:20px 0;margin:0 auto;}
.footer .copy a{color:#8ea0b4;}

/* ---------- 内页通用 ---------- */
.inner{min-height:300px;}
.article-box{max-width:980px;margin:0 auto;}
.article-box h2{font-size:22px;color:var(--navy);margin:26px 0 12px;padding-left:14px;border-left:4px solid var(--accent);}
.article-box p{margin-bottom:14px;color:var(--steel);}
.article-box img{border-radius:var(--radius);margin:18px 0;}
.about-company .about-wrap{padding:0;}
.page-intro{text-align:center;max-width:820px;margin:0 auto 46px;color:var(--steel);}

/* ---------- 列表页 ---------- */
.list-page{padding:56px 0 80px;}
.list-cols{display:grid;grid-template-columns:2.3fr 1fr;gap:36px;align-items:start;}

.article-list li{display:flex;gap:18px;padding:24px 0;border-bottom:1px solid var(--line);}
.article-list li .pic{flex:0 0 260px;overflow:hidden;border-radius:8px;}
.article-list li .pic img{width:100%;height:170px;object-fit:cover;transition:.4s;}
.article-list li:hover .pic img{transform:scale(1.05);}
.article-list li h3{font-size:18px;color:var(--navy);line-height:1.5;}
.article-list li h3 a:hover{color:var(--accent);}
.article-list li time{font-size:12px;color:var(--steel-light);}
.article-list li p{font-size:14px;color:var(--steel-light);margin-top:8px;}
.sidebar .panel{margin-bottom:24px;}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;}
.side-list li a:hover{color:var(--accent);}
.side-hot li{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);}
.side-hot .num{width:24px;height:24px;border-radius:6px;background:var(--bg);color:var(--steel-light);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none;}
.side-hot li:nth-child(-n+3) .num{background:var(--accent);color:#fff;}
.side-hot li a{font-size:14px;color:#33424f;}
.side-hot li a:hover{color:var(--accent);}
.side-contact{background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;}
.side-contact h4{color:#fff;}
.side-contact .tel{font-size:26px;color:var(--accent);font-weight:800;margin:8px 0;}
.side-contact p{color:#c8d4e0;font-size:13px;}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:start;}
.contact-info{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow);}
.contact-info h3{font-size:20px;color:var(--navy);margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid var(--navy);}
.contact-info li{display:flex;align-items:center;padding:14px 0;border-bottom:1px dashed var(--line);}
.contact-info li .ico{width:42px;height:42px;border-radius:10px;background:rgba(240,132,26,.12);display:flex;align-items:center;justify-content:center;margin-right:14px;flex:none;}
.contact-info li .ico svg{width:22px;height:22px;stroke:var(--accent);}
.contact-info li b{color:#2b3a49;display:block;font-size:14px;}
.contact-info li span{color:var(--steel-light);font-size:14px;}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow);}
.contact-form h3{font-size:20px;color:var(--navy);margin-bottom:20px;padding-bottom:14px;border-bottom:2px solid var(--navy);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-item{margin-bottom:16px;}
.form-item label{display:block;font-size:13px;color:var(--steel-light);margin-bottom:6px;}
.form-item input,.form-item textarea,.form-item select{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:6px;font-size:14px;font-family:inherit;
  color:#22303c;transition:.2s;background:#fff;
}
.form-item input:focus,.form-item textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(240,132,26,.12);}
.form-item textarea{height:120px;resize:vertical;}
.form-submit{background:var(--accent);color:#fff;border:0;border-radius:6px;padding:12px 36px;font-size:15px;font-weight:600;cursor:pointer;transition:.25s;}
.form-submit:hover{background:var(--accent-2);}

/* ---------- 返回顶部 ---------- */
#toTop{
  position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;
  display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 18px rgba(240,132,26,.4);z-index:99;border:0;transition:.25s;
}
#toTop:hover{background:var(--accent-2);}
#toTop.show{display:flex;}

/* ---------- 滚动显现 ---------- */
.fade-up{opacity:0;transform:translateY(24px);transition:.6s ease;}
.fade-up.in{opacity:1;transform:none;}

/* ---------- 响应式兜底 (窄屏 PC 保护) ---------- */
@media (max-width:1280px){
  .container{width:96%;}
}
@media (max-width:1024px){
  .about-wrap{flex-direction:column;}
  .about-pic{flex:1 1 auto;max-width:100%;}
  .adv-grid{grid-template-columns:repeat(2,1fr);}
  .prod-grid{grid-template-columns:repeat(2,1fr);}
  .app-grid{grid-template-columns:repeat(2,1fr);}
  .equip-grid{grid-template-columns:repeat(2,1fr);}
  .news-wrap{grid-template-columns:1fr;}
  .footer .container{grid-template-columns:1fr 1fr;}
  .list-cols{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}


/* ===== 详情页 上/下篇翻页 ===== */
.page-turn{display:flex;gap:14px;margin-top:44px;border-top:1px solid var(--line);padding-top:26px;}
.page-turn a{flex:1;display:flex;flex-direction:column;gap:6px;padding:16px 20px;border:1px solid var(--line);border-radius:10px;background:#fff;transition:.25s;}
.page-turn a span{font-size:13px;color:var(--steel-light);}
.page-turn a b{font-size:16px;color:var(--navy);font-weight:600;}
.page-turn a:hover{border-color:var(--accent);box-shadow:var(--shadow-lg);}
.page-turn a:hover span{color:var(--accent);}
.page-turn a.next{text-align:right;align-items:flex-end;}
.page-turn a.next b{color:var(--accent);}
@media (max-width:760px){.page-turn{flex-direction:column;}}


/* ===== 产品列表 阵列 ===== */
.prod-grid.cat{grid-template-columns:repeat(3,1fr);}
.prod-card.simple a{display:block;text-decoration:none;}
.prod-card.simple .body{padding:14px 16px;text-align:center;border-top:1px solid var(--line);}
.prod-card.simple .body h3{font-size:16px;color:var(--navy);font-weight:600;margin:0;}
.prod-card.simple:hover .body h3{color:var(--accent);}
.prod-card.simple .pic img{transition:.4s;}
.prod-card.simple:hover .pic img{transform:scale(1.05);}
@media(max-width:980px){.prod-grid.cat{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.prod-grid.cat{grid-template-columns:1fr 1fr;}}

/* ===== 分页 ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:40px;flex-wrap:wrap;}
.pagination a,.pagination span{display:inline-flex;min-width:38px;height:38px;padding:0 10px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--steel);font-size:14px;text-decoration:none;transition:.2s;}
.pagination a:hover{border-color:var(--accent);color:var(--accent);}
.pagination .cur{background:var(--navy);color:#fff;border-color:var(--navy);font-weight:600;}
.pagination .info{color:var(--steel-light);border:none;background:transparent;}
.pagination .dot{color:var(--steel-light);border:none;background:transparent;min-width:auto;}


/* ===== 文章/产品 详情标题与正文（降低嵌套、标题语义化） ===== */
.p-head-title{font-size:20px;color:var(--navy);font-weight:700;}
.article-panel{padding:36px;}
.article-panel h2{font-size:22px;color:var(--navy);margin:26px 0 12px;padding-left:14px;border-left:4px solid var(--accent);}
.article-panel p{margin-bottom:14px;color:var(--steel);}
.article-panel img{border-radius:var(--radius);margin:18px 0;}
.art-title{font-size:26px;color:var(--navy);font-weight:700;line-height:1.5;text-align:center;padding-bottom:20px;border-bottom:1px solid var(--line);}
.art-meta{color:var(--steel-light);font-size:13px;margin:12px 0 0;text-align:center;}
.art-prevnext{display:flex;justify-content:space-between;gap:20px;font-size:14px;margin-top:30px;padding-top:20px;border-top:2px solid var(--navy);}
.art-prevnext p{margin:0;color:var(--steel);}
@media(max-width:760px){.art-prevnext{flex-direction:column;gap:10px;}}

/* ===== 阿里巴巴普惠体（自托管） ===== */
@font-face{font-family:'Alibaba PuHuiTi';src:url('../fonts/puhuiti-regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap;}
@font-face{font-family:'Alibaba PuHuiTi';src:url('../fonts/puhuiti-medium.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap;}

/* ===== 首页 banner 三图轮播（含切换特效） ===== */
.hero{position:relative;height:560px;overflow:hidden;}
.hero-track{position:absolute;inset:0;}
.hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1s ease;z-index:1;}
.hero-slide.active{opacity:1;visibility:visible;z-index:2;}
.hero-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.12);transition:transform 9s linear;}
.hero-slide.active img{transform:scale(1);}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,39,66,.9),rgba(13,39,66,.5) 60%,rgba(13,39,66,.2));}
.hero-cap{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;max-width:1200px;padding:0 24px;z-index:3;}
.hero-cap .tag,.hero-cap h1,.hero-cap p,.hero-cap .ctas{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease;}
.hero-slide.active .hero-cap .tag{opacity:1;transform:none;transition-delay:.25s;}
.hero-slide.active .hero-cap h1{opacity:1;transform:none;transition-delay:.45s;}
.hero-slide.active .hero-cap p{opacity:1;transform:none;transition-delay:.65s;}
.hero-slide.active .hero-cap .ctas{opacity:1;transform:none;transition-delay:.85s;}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:46px;height:46px;border:none;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:30px;line-height:1;cursor:pointer;transition:.25s;}
.hero-arrow:hover{background:var(--accent);}
.hero-prev{left:24px;}
.hero-next{right:24px;}
.hero-dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:4;display:flex;gap:10px;}
.hero-dots .dot{width:26px;height:5px;border:none;border-radius:3px;background:rgba(255,255,255,.45);cursor:pointer;transition:.3s;}
.hero-dots .dot.active{background:var(--accent);width:38px;}
.hero-cap h1,.hero-cap p,.hero-cap .tag{font-family:'Alibaba PuHuiTi','PingFang SC','Microsoft YaHei',sans-serif;}
@media(max-width:960px){.hero{height:440px;}}