/* ============================================================
   池州市畅通电缆桥架有限公司 — 官网新版样式
   主色：深蓝 #0d4d94 / 辅蓝 #187abc / 点缀橙 #f5a623
   ============================================================ */
:root{
  --primary:#0d4d94;
  --primary-dark:#093463;
  --primary-light:#187abc;
  --accent:#f5a623;
  --accent-dark:#dd8f0e;
  --ink:#2b2f36;
  --gray:#6b7686;
  --light:#f4f7fb;
  --line:#e3e9f2;
  --shadow-sm:0 4px 14px rgba(13,77,148,.08);
  --shadow-md:0 12px 32px rgba(13,77,148,.14);
  --radius:10px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75;font-size:15px;}
a{text-decoration:none;color:inherit;transition:color .2s;}
ul{list-style:none;}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--primary-dark);color:#bcd2e8;font-size:13px;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:12px;}
.topbar .phone{white-space:nowrap;}
.topbar .phone b{color:var(--accent);font-size:16px;margin-left:6px;letter-spacing:1px;font-family:Arial;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--line),0 8px 24px rgba(9,52,99,.06);}
.header-inner{display:flex;align-items:center;gap:18px;min-height:84px;}
.brand{display:flex;align-items:center;gap:14px;min-width:0;}
.brand img{height:64px;width:auto;}
.brand .name{line-height:1.35;min-width:0;}
.brand .name b{display:block;font-size:20px;color:var(--primary);letter-spacing:1px;white-space:nowrap;}
.brand .name span{font-size:11px;color:var(--gray);letter-spacing:1.8px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;margin-left:auto;}
.main-nav a{position:relative;display:block;padding:30px 17px;font-size:16px;color:var(--ink);letter-spacing:1px;}
.main-nav a::after{content:"";position:absolute;left:50%;bottom:20px;width:0;height:3px;border-radius:2px;background:var(--accent);transform:translateX(-50%);transition:width .25s;}
.main-nav a:hover,.main-nav a.active{color:var(--primary-light);}
.main-nav a:hover::after,.main-nav a.active::after{width:26px;}
.nav-cta{margin-left:14px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff !important;border-radius:6px;padding:12px 24px !important;box-shadow:0 6px 16px rgba(245,166,35,.35);}
.nav-cta::after{display:none !important;}
.nav-cta:hover{filter:brightness(1.06);}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;font-size:22px;color:var(--primary);width:44px;height:40px;cursor:pointer;}

/* ---------- 全屏横幅 ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--primary-dark);}
.hero-bg{position:absolute;inset:0;background:url("../assets/factory-line.jpg") center/cover no-repeat;opacity:.38;transform:scale(1.04);animation:heroZoom 14s ease-in-out infinite alternate;}
@keyframes heroZoom{from{transform:scale(1.04);}to{transform:scale(1.12);}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,52,99,.92) 18%,rgba(13,77,148,.72) 55%,rgba(24,122,188,.42));}
.hero .container{position:relative;z-index:2;padding:96px 20px 110px;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.4);border-radius:30px;padding:6px 20px;font-size:14px;letter-spacing:3px;margin-bottom:26px;background:rgba(255,255,255,.08);}
.hero h1{font-size:46px;line-height:1.35;letter-spacing:2px;margin-bottom:16px;text-shadow:0 4px 18px rgba(0,0,0,.35);}
.hero h1 span{color:var(--accent);}
.hero .sub{font-size:17px;color:#d9e7f5;max-width:760px;letter-spacing:1px;margin-bottom:38px;}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;}
.btn{display:inline-block;padding:14px 38px;border-radius:6px;font-size:16px;letter-spacing:2px;transition:.25s;cursor:pointer;border:none;}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;box-shadow:0 8px 20px rgba(245,166,35,.4);}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(245,166,35,.5);}
.btn-ghost{border:1px solid rgba(255,255,255,.65);color:#fff;background:rgba(255,255,255,.06);}
.btn-ghost:hover{background:rgba(255,255,255,.16);}

/* ---------- 页面内页横幅 ---------- */
.page-banner{position:relative;color:#fff;background:linear-gradient(120deg,var(--primary-dark),var(--primary) 60%,var(--primary-light));overflow:hidden;}
.page-banner::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 64px);}
.page-banner .container{position:relative;padding:56px 20px;}
.page-banner h1{font-size:32px;letter-spacing:3px;}
.page-banner p{color:#c9dcf0;font-size:14px;letter-spacing:1px;margin-top:6px;}

/* ---------- 数据条 ---------- */
.stats{position:relative;z-index:5;margin-top:-56px;}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.stat-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-md);padding:30px 12px;text-align:center;border-bottom:3px solid var(--accent);}
.stat-card b{display:block;font-size:38px;color:var(--primary);line-height:1.15;font-family:Arial,sans-serif;}
.stat-card b i{font-style:normal;font-size:17px;margin-left:3px;color:var(--primary-light);}
.stat-card span{font-size:14px;color:var(--gray);}

/* ---------- 节标题 ---------- */
.section{padding:78px 0;}
.section.alt{background:var(--light);}
.section-head{text-align:center;margin-bottom:52px;}
.section-head h2{font-size:32px;letter-spacing:3px;color:var(--ink);}
.section-head h2 em{font-style:normal;color:var(--primary-light);}
.section-head .bar{width:58px;height:4px;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--accent-dark));margin:16px auto 12px;}
.section-head p{color:var(--gray);font-size:15px;letter-spacing:1px;}

/* ---------- 产品卡片 ---------- */
.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-align:center;transition:.3s;display:block;}
.product-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-md);border-color:transparent;}
.product-card .pic{height:140px;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,#eef4fb,#d8e6f4);}
.product-card .pic svg{width:82px;height:82px;}
.product-card h3{font-size:16.5px;padding:15px 8px 3px;color:var(--ink);letter-spacing:1px;}
.product-card p{font-size:12.5px;color:var(--gray);padding:0 10px 17px;}

/* 产品详情行（产品中心页） */
.product-row{display:flex;gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;margin-bottom:28px;box-shadow:var(--shadow-sm);transition:.3s;}
.product-row:hover{box-shadow:var(--shadow-md);}
.product-row:nth-child(even){flex-direction:row-reverse;}
.product-row .info{flex:1.5;min-width:0;}
.product-row .info h3{font-size:21px;color:var(--primary);letter-spacing:1px;margin-bottom:4px;}
.product-row .info .en{font-size:12px;color:#9fb0c3;letter-spacing:1.5px;margin-bottom:14px;}
.product-row .info p{color:#4c5563;font-size:14.5px;margin-bottom:14px;text-align:justify;}
.product-row .specs{display:flex;flex-wrap:wrap;gap:8px;}
.product-row .specs span{background:var(--light);border:1px solid var(--line);color:var(--primary);font-size:12.5px;border-radius:4px;padding:4px 12px;}
.product-row .figure{flex:1;min-width:220px;display:flex;justify-content:center;}
.product-row .figure svg{width:200px;height:150px;}

/* ---------- 优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.adv-card{background:#fff;border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow-sm);transition:.3s;border-top:3px solid transparent;}
.adv-card:hover{border-top-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-5px);}
.adv-icon{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 8px 18px rgba(13,77,148,.25);}
.adv-icon svg{width:30px;height:30px;}
.adv-card h3{font-size:17.5px;color:var(--primary-dark);margin-bottom:8px;letter-spacing:1px;}
.adv-card p{font-size:13.8px;color:var(--gray);}

/* ---------- 图文介绍 ---------- */
.photo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.photo-card{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);height:230px;}
.photo-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.photo-card:hover img{transform:scale(1.07);}
.photo-card .cap{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font-size:14.5px;letter-spacing:1px;background:linear-gradient(transparent,rgba(6,30,58,.82));}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case-card{position:relative;border-radius:var(--radius);overflow:hidden;height:250px;display:flex;align-items:flex-end;color:#fff;background:linear-gradient(160deg,#1b5f9e,#0d3a68);transition:.3s;}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.case-card .pattern{position:absolute;inset:0;opacity:.22;background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.5) 0 1px,transparent 1px 28px),repeating-linear-gradient(0deg,rgba(255,255,255,.35) 0 1px,transparent 1px 36px);}
.case-card .num{position:absolute;top:16px;left:20px;font-size:38px;font-weight:bold;font-style:italic;color:rgba(255,255,255,.3);font-family:Arial;}
.case-card .txt{position:relative;width:100%;padding:40px 20px 18px;background:linear-gradient(transparent,rgba(4,26,50,.85));}
.case-card .txt b{display:block;font-size:17px;letter-spacing:1px;}
.case-card .txt span{font-size:12.5px;color:#bcd4ea;}

/* ---------- 关于 ---------- */
.about-wrap{display:flex;gap:46px;align-items:center;}
.about-text{flex:1.25;min-width:0;}
.about-text h3{font-size:22px;color:var(--primary-dark);margin-bottom:16px;letter-spacing:1px;}
.about-text p{font-size:14.8px;color:#4c5563;margin-bottom:12px;text-align:justify;}
.about-points{margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:9px 18px;}
.about-points li{font-size:14px;color:#3d4552;padding-left:24px;position:relative;}
.about-points li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:bold;}
.about-card{flex:1;background:linear-gradient(150deg,var(--primary-dark),var(--primary-light));border-radius:14px;color:#fff;padding:42px 38px;position:relative;overflow:hidden;box-shadow:var(--shadow-md);}
.about-card::after{content:"";position:absolute;right:-46px;top:-46px;width:190px;height:190px;border-radius:50%;background:rgba(255,255,255,.08);}
.about-card h4{font-size:20px;margin-bottom:20px;letter-spacing:3px;}
.about-card li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.28);font-size:14px;}
.about-card li b{color:#ffd98a;font-weight:normal;text-align:right;}

/* ---------- 新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.3s;display:flex;gap:20px;}
.news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);}
.news-date{flex:none;width:74px;text-align:center;background:var(--light);border-radius:8px;padding:12px 4px;height:fit-content;}
.news-date b{display:block;font-size:26px;color:var(--primary);font-family:Arial;line-height:1.1;}
.news-date span{font-size:12px;color:var(--gray);}
.news-card h3{font-size:17px;color:var(--ink);margin-bottom:8px;line-height:1.55;}
.news-card h3 a:hover{color:var(--primary-light);}
.news-card p{font-size:13.5px;color:var(--gray);}
.news-card .more{display:inline-block;margin-top:10px;font-size:13px;color:var(--accent-dark);}

/* 文章正文 */
.article{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:46px 50px;box-shadow:var(--shadow-sm);}
.article h2{font-size:24px;color:var(--primary-dark);margin-bottom:8px;letter-spacing:1px;}
.article .meta{font-size:13px;color:#9fb0c3;margin-bottom:26px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.article h3{font-size:17.5px;color:var(--primary);margin:24px 0 10px;}
.article p{font-size:15px;color:#414956;margin-bottom:12px;text-align:justify;}
.article ul{margin:0 0 14px 4px;}
.article ul li{font-size:15px;color:#414956;padding-left:20px;position:relative;margin-bottom:6px;}
.article ul li::before{content:"▪";position:absolute;left:0;color:var(--accent);}

/* ---------- 询价/联系 ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1.25fr;gap:36px;align-items:stretch;}
.contact-info{background:linear-gradient(150deg,var(--primary-dark),var(--primary-light));border-radius:14px;color:#fff;padding:46px 40px;box-shadow:var(--shadow-md);position:relative;overflow:hidden;}
.contact-info::after{content:"";position:absolute;right:-50px;bottom:-50px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.07);}
.contact-info h3{font-size:22px;margin-bottom:6px;letter-spacing:2px;}
.contact-info .en{font-size:12px;color:#9fc0e0;letter-spacing:3px;margin-bottom:28px;}
.contact-info dl{display:flex;gap:15px;margin-bottom:22px;align-items:flex-start;}
.contact-info dt{width:44px;height:44px;flex:none;border-radius:10px;background:rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:19px;}
.contact-info dd b{display:block;font-size:15px;letter-spacing:1px;}
.contact-info dd span{font-size:14px;color:#d3e3f3;}
.quote-form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:46px 40px;box-shadow:var(--shadow-md);}
.quote-form h3{font-size:22px;color:var(--primary-dark);margin-bottom:24px;letter-spacing:2px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
.quote-form input,.quote-form textarea,.quote-form select{width:100%;border:1px solid #d5deea;border-radius:6px;padding:13px 15px;font-size:14px;font-family:inherit;outline:none;transition:.2s;background:#fafcfe;color:var(--ink);}
.quote-form input:focus,.quote-form textarea:focus,.quote-form select:focus{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(24,122,188,.12);}
.quote-form textarea{height:120px;resize:vertical;margin-bottom:18px;}
.quote-form .full{width:100%;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-size:16px;padding:15px;border-radius:6px;cursor:pointer;letter-spacing:6px;border:none;box-shadow:0 8px 18px rgba(245,166,35,.35);transition:.25s;}
.quote-form .full:hover{transform:translateY(-2px);}
.form-tip{font-size:12.5px;color:var(--gray);text-align:center;margin-top:14px;}

/* ---------- CTA 条 ---------- */
.cta-strip{background:linear-gradient(110deg,var(--primary-dark),var(--primary) 55%,var(--primary-light));color:#fff;padding:46px 0;}
.cta-strip .container{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-strip h3{font-size:24px;letter-spacing:2px;}
.cta-strip p{color:#c9dcf0;font-size:14px;margin-top:4px;}
.cta-strip .phone-big{font-size:30px;color:var(--accent);font-family:Arial;letter-spacing:1px;font-weight:bold;}

/* ---------- 重点产品：抗震支架 ---------- */
.kz-band{background:linear-gradient(120deg,#093463,#0d4d94 55%,#187abc);color:#fff;padding:64px 0;position:relative;overflow:hidden;}
.kz-band::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(-115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 70px);}
.kz-inner{position:relative;display:flex;gap:48px;align-items:center;}
.kz-copy{flex:1.1;min-width:0;}
.kz-tag{display:inline-block;border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.1);border-radius:20px;padding:5px 18px;font-size:13.5px;letter-spacing:3px;margin-bottom:16px;}
.kz-copy h2{font-size:32px;letter-spacing:2px;margin-bottom:12px;}
.kz-copy h2 em{font-style:normal;color:var(--accent);}
.kz-copy p{color:#d3e3f3;font-size:15px;margin-bottom:24px;text-align:justify;}
.kz-items{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:16px;min-width:0;}
.kz-item{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:10px;padding:20px 18px;transition:.25s;}
.kz-item:hover{background:rgba(255,255,255,.17);transform:translateY(-3px);}
.kz-item b{display:block;font-size:21px;color:var(--accent);font-family:Arial;letter-spacing:1px;margin-bottom:4px;}
.kz-item span{font-size:13.5px;color:#dbe8f5;line-height:1.6;}
@media (max-width:860px){
  .kz-inner{flex-direction:column;align-items:stretch;}
  .kz-items{grid-template-columns:1fr 1fr;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#082441;color:#93a9c2;font-size:14px;}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:56px 0 40px;}
.footer-top h4{color:#fff;font-size:16px;margin-bottom:18px;letter-spacing:2px;}
.footer-top li{margin-bottom:10px;}
.footer-top a:hover{color:var(--accent);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand img{height:52px;background:#fff;border-radius:6px;padding:4px;}
.footer-brand b{color:#fff;font-size:16.5px;letter-spacing:1px;}
.copyright{border-top:1px solid rgba(255,255,255,.09);padding:20px 0;text-align:center;font-size:13px;color:#6e87a3;}
.copyright a{color:#6e87a3;}
.copyright a:hover{color:var(--accent);}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13.5px;color:var(--gray);padding:16px 0 0;}
.crumb a:hover{color:var(--primary-light);}

/* ---------- 回到顶部 ---------- */
#backtop{position:fixed;right:26px;bottom:40px;width:48px;height:48px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;box-shadow:0 10px 22px rgba(13,77,148,.35);z-index:300;}
#backtop.show{opacity:1;pointer-events:auto;}
#backtop:hover{transform:translateY(-3px);}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease;}
.reveal.on{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .product-grid{grid-template-columns:repeat(3,1fr);}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .photo-grid{grid-template-columns:repeat(2,1fr);}
  .main-nav a{padding:30px 11px;font-size:15px;}
}
@media (max-width:860px){
  .menu-btn{display:block;}
  .main-nav{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;display:none;box-shadow:0 16px 30px rgba(9,52,99,.15);padding-bottom:12px;}
  .main-nav.open{display:flex;}
  .main-nav a{padding:14px 26px;border-bottom:1px solid var(--light);}
  .main-nav a::after{display:none;}
  .nav-cta{margin:12px 26px;text-align:center;}
  .brand .name b{font-size:16px;white-space:normal;}
  .brand img{height:52px;}
  .topbar .wel{display:none;}
  .hero .container{padding:64px 20px 84px;}
  .hero h1{font-size:32px;}
  .hero .sub{font-size:15px;}
  .stats .container{grid-template-columns:repeat(2,1fr);gap:14px;}
  .product-grid{grid-template-columns:repeat(2,1fr);}
  .product-row{flex-direction:column !important;padding:24px;}
  .adv-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .about-wrap{flex-direction:column;}
  .about-points{grid-template-columns:1fr;}
  .contact-wrap{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .section{padding:54px 0;}
  .section-head h2{font-size:26px;}
  .article{padding:30px 22px;}
  .cta-strip .container{justify-content:center;text-align:center;}
}