/* ============================================================
   蓝策电子 / OctoNet 企业官网样式  (基于 tpure 主题改造)
   主色: #108cee / 深蓝 #095eb8 / 强调 #3168b8
   ============================================================ */
:root{
  --blue:#108cee;
  --blue-d:#095eb8;
  --blue-l:#e8f3fd;
  --ink:#222;
  --gray:#666;
  --line:#eaeef3;
  --bg:#f5f8fc;
  --maxw:1200px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.lance-wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.lance-section{padding:72px 0;}
.lance-section h2.lance-title{font-size:34px;text-align:center;margin:0 0 10px;font-weight:700;letter-spacing:1px;}
.lance-section .lance-sub{text-align:center;color:var(--gray);font-size:16px;margin:0 0 44px;}
.lance-btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 30px;border-radius:4px;font-size:15px;transition:.25s;}
.lance-btn:hover{background:var(--blue-d);}
.lance-btn.ghost{background:transparent;border:1px solid var(--blue);color:var(--blue);}
.lance-btn.ghost:hover{background:var(--blue);color:#fff;}
.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;}

/* ---------- 顶部导航 ---------- */
.lance-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);box-shadow:0 2px 14px rgba(0,0,0,.06);backdrop-filter:blur(6px);}
.lance-header .bar{display:flex;align-items:center;height:72px;justify-content:space-between;}
.lance-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--blue-d);}
.lance-logo img{height:38px;width:auto;}
.lance-nav{display:flex;align-items:center;gap:26px;}
.lance-nav a{font-size:15px;color:#333;position:relative;padding:6px 0;transition:.2s;}
.lance-nav a:hover,.lance-nav a.active{color:var(--blue);}
.lance-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--blue);}
.lance-tel{display:flex;align-items:center;gap:6px;color:var(--blue);font-weight:700;font-size:17px;}
.lance-tel img{width:18px;height:18px;}
.lance-menu-btn{display:none;font-size:26px;color:var(--blue);cursor:pointer;}

/* ---------- Hero 轮播（octonet 宽图自带文案，纯图不叠字） ---------- */
.lance-hero{position:relative;overflow:hidden;background:#0a2746;}
.lance-hero::before{content:"";display:block;padding-bottom:28.7%;}
.lance-hero .slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .8s;z-index:1;}
.lance-hero .slide.on{opacity:1;}
.lance-hero .dots{position:absolute;bottom:18px;left:0;right:0;z-index:3;text-align:center;}
.lance-hero .dots span{display:inline-block;width:30px;height:4px;background:rgba(255,255,255,.45);margin:0 5px;border-radius:2px;cursor:pointer;}
.lance-hero .dots span.on{background:#fff;}

/* ---------- 三大技术卡片 ---------- */
.lance-tech{background:var(--bg);}
.lance-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.lance-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:34px 28px;transition:.25s;}
.lance-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(16,140,238,.14);border-color:var(--blue);}
.lance-card .ic{width:64px;height:64px;margin-bottom:18px;}
.lance-card h3{font-size:20px;margin:0 0 12px;color:var(--blue-d);}
.lance-card p{color:var(--gray);font-size:15px;line-height:1.8;margin:0 0 16px;}
.lance-card .more{color:var(--blue);font-size:14px;font-weight:600;}

/* ---------- 优势 + 图文 ---------- */
.lance-adv .row{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.lance-adv .row img{border-radius:10px;width:100%;}
.lance-adv ul{list-style:none;padding:0;margin:18px 0 0;}
.lance-adv li{padding:10px 0 10px 30px;position:relative;color:#444;line-height:1.7;font-size:15px;}
.lance-adv li::before{content:"";position:absolute;left:0;top:16px;width:10px;height:10px;border-radius:50%;background:var(--blue);}

/* ---------- 产品中心 ---------- */
.lance-prod{background:var(--bg);}
.lance-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.lance-prod .pc{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.25s;}
.lance-prod .pc:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(16,140,238,.14);}
.lance-prod .pc img{width:100%;height:170px;object-fit:contain;background:var(--blue-l);padding:18px;}
.lance-prod .pc .body{padding:18px 20px 22px;}
.lance-prod .pc h3{margin:0 0 8px;font-size:17px;color:var(--blue-d);}
.lance-prod .pc p{margin:0;color:var(--gray);font-size:14px;line-height:1.7;}

/* ---------- 解决方案网格 ---------- */
.lance-grid5{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;}
.lance-sol{position:relative;border-radius:10px;overflow:hidden;height:200px;color:#fff;display:flex;align-items:flex-end;}
.lance-sol img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.lance-sol::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(9,94,184,.85),rgba(9,94,184,.05));}
.lance-sol span{position:relative;z-index:2;padding:16px 18px;font-size:17px;font-weight:600;}

/* ---------- 案例 ---------- */
.lance-case .item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;transition:.25s;}
.lance-case .item:hover{box-shadow:0 14px 36px rgba(0,0,0,.08);}
.lance-case .item h3{margin:0 0 8px;font-size:18px;color:var(--blue-d);}
.lance-case .item .tag{display:inline-block;background:var(--blue-l);color:var(--blue);font-size:13px;padding:3px 10px;border-radius:20px;margin-bottom:12px;}
.lance-case .item p{color:var(--gray);font-size:14px;line-height:1.7;margin:0;}

/* ---------- 关于/数据 ---------- */
.lance-about .row{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.lance-about .row img{border-radius:10px;width:100%;}
.lance-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;margin-top:36px;}
.lance-stats .n{font-size:40px;font-weight:800;color:var(--blue);}
.lance-stats .l{color:var(--gray);font-size:14px;margin-top:6px;}

/* ---------- 新闻 ---------- */
.lance-news .row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.lance-news .nw{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.25s;}
.lance-news .nw:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(0,0,0,.08);}
.lance-news .nw .date{background:var(--blue);color:#fff;font-size:13px;padding:6px 14px;display:inline-block;}
.lance-news .nw .body{padding:18px 20px 22px;}
.lance-news .nw h3{margin:12px 0 8px;font-size:16px;line-height:1.6;}
.lance-news .nw p{margin:0;color:var(--gray);font-size:14px;line-height:1.7;}

/* ---------- 联系 CTA ---------- */
.lance-cta{background:linear-gradient(120deg,var(--blue-d),var(--blue));color:#fff;text-align:center;}
.lance-cta h2{font-size:30px;margin:0 0 14px;}
.lance-cta p{font-size:16px;opacity:.95;margin:0 0 24px;}
.lance-cta .lance-btn{background:#fff;color:var(--blue-d);}
.lance-cta .lance-btn:hover{background:#eaf4ff;}

/* ---------- 页脚 ---------- */
.lance-footer{background:#0d2138;color:#c7d4e2;padding:54px 0 26px;font-size:14px;}
.lance-footer .top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;}
.lance-footer h4{color:#fff;font-size:16px;margin:0 0 16px;}
.lance-footer a{color:#c7d4e2;display:block;padding:5px 0;transition:.2s;}
.lance-footer a:hover{color:var(--blue);}
.lance-footer .flogo{height:42px;margin-bottom:14px;}
.lance-footer .contact p{margin:8px 0;line-height:1.7;}
.lance-footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;text-align:center;color:#8aa0b8;}

/* ---------- 栏目/文章通用 ---------- */
.lance-page-hero{background:linear-gradient(120deg,var(--blue-d),var(--blue));color:#fff;padding:54px 0;text-align:center;}
.lance-page-hero h1{font-size:34px;margin:0 0 8px;}
.lance-page-hero .crumb{font-size:14px;opacity:.9;}
.lance-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.lance-list .card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:.25s;}
.lance-list .card:hover{transform:translateY(-5px);box-shadow:0 14px 36px rgba(0,0,0,.08);}
.lance-list .card img{width:100%;height:180px;object-fit:cover;}
.lance-list .card .body{padding:18px 20px 22px;}
.lance-list .card h3{margin:0 0 8px;font-size:17px;color:var(--blue-d);}
.lance-list .card p{margin:0;color:var(--gray);font-size:14px;line-height:1.7;}
.lance-article{max-width:860px;margin:0 auto;line-height:1.9;font-size:16px;color:#333;}
.lance-article img{max-width:100%;border-radius:8px;margin:18px 0;}
.lance-article h2,.lance-article h3{color:var(--blue-d);}
.lance-pager{text-align:center;margin:40px 0;}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .lance-grid3,.lance-grid4,.lance-news .row,.lance-list{grid-template-columns:repeat(2,1fr);}
  .lance-grid5{grid-template-columns:repeat(2,1fr);}
  .lance-adv .row,.lance-about .row{grid-template-columns:1fr;}
  .lance-stats{grid-template-columns:repeat(2,1fr);}
  .lance-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 20px;gap:4px;box-shadow:0 10px 24px rgba(0,0,0,.1);}
  .lance-nav.open{display:flex;}
  .lance-menu-btn{display:block;}
  .lance-hero::before{padding-bottom:48%;}
  .lance-footer .top{grid-template-columns:1fr 1fr;}
}
@media(max-width:560px){
  .lance-grid3,.lance-grid4,.lance-grid5,.lance-news .row,.lance-list{grid-template-columns:1fr;}
  .lance-section{padding:48px 0;}
  .lance-section h2.lance-title{font-size:26px;}
  .lance-hero::before{padding-bottom:58%;}
}