*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:#333;background:#f5f8fc;line-height:1.7}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block;border:0}
ul,ol{list-style:none}
.klb-wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.klb-topbar{background:#0d3b8c;color:#cfe0f5;font-size:13px;padding:8px 0}
.klb-topbar .klb-wrap{display:flex;justify-content:space-between;flex-wrap:wrap}
.klb-header{background:#fff;box-shadow:0 2px 8px rgba(13,59,140,.08);position:sticky;top:0;z-index:100}
.klb-header .klb-wrap{display:flex;align-items:center;justify-content:space-between;height:80px}
.klb-logo{display:flex;align-items:center;gap:10px}
.klb-logo img{height:56px;width:auto}
.klb-nav>ul{display:flex;gap:8px}
.klb-nav>ul>li{position:relative}
.klb-nav>ul>li>a{display:block;padding:12px 22px;font-size:16px;color:#222;font-weight:500;border-radius:4px;transition:.2s}
.klb-nav>ul>li>a:hover,.klb-nav>ul>li.klb-on>a{color:#1a5fb4;background:#eaf2fc}
.klb-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.klb-burger span{width:26px;height:3px;background:#0d3b8c;border-radius:2px}
.klb-banner{position:relative;overflow:hidden}
.klb-slide{display:none;position:relative;height:420px}
.klb-slide.klb-act{display:block}
.klb-slide img{width:100%;height:420px;object-fit:cover}
.klb-slide .klb-cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(13,59,140,.75));color:#fff;padding:50px 40px 30px}
.klb-slide .klb-cap h1,.klb-slide .klb-cap h2{font-size:30px;margin-bottom:8px;font-weight:600}
.klb-slide .klb-cap p{font-size:16px;opacity:.92}
.klb-dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.klb-dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer}
.klb-dots i.klb-act{background:#fff}
.klb-sec{padding:50px 0}
.klb-sec-t{text-align:center;margin-bottom:34px}
.klb-sec-t h2{font-size:28px;color:#0d3b8c;display:inline-block;padding-bottom:10px;position:relative}
.klb-sec-t h2:after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:56px;height:3px;background:#1a5fb4;border-radius:2px}
.klb-sec-t p{color:#7a8aa0;margin-top:10px;font-size:14px}
.klb-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.klb-cat{background:#fff;border-radius:8px;padding:26px 18px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,.05);transition:.25s;border-top:3px solid #1a5fb4}
.klb-cat:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(26,95,180,.15)}
.klb-cat h3{font-size:17px;color:#0d3b8c;margin-bottom:8px}
.klb-cat p{font-size:13px;color:#7a8aa0}
.klb-prods{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.klb-card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.06);transition:.25s}
.klb-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(26,95,180,.16)}
.klb-card .klb-pimg{height:200px;overflow:hidden;background:#eef4fc}
.klb-card .klb-pimg img{width:100%;height:100%;object-fit:cover;transition:.3s}
.klb-card:hover .klb-pimg img{transform:scale(1.05)}
.klb-card .klb-pbd{padding:16px}
.klb-card .klb-pbd h3{font-size:16px;color:#222;margin-bottom:6px;line-height:1.4}
.klb-card .klb-pbd .klb-cat-no{font-size:12px;color:#1a5fb4;margin-bottom:6px}
.klb-card .klb-pbd .klb-spec{font-size:13px;color:#7a8aa0}
.klb-news{display:grid;grid-template-columns:1.4fr 1fr;gap:30px}
.klb-nlist{background:#fff;border-radius:8px;padding:10px 24px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.klb-nlist li{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed #e3eaf5;align-items:center}
.klb-nlist li:last-child{border-bottom:0}
.klb-nlist .klb-ndate{flex:0 0 78px;text-align:center;background:#eaf2fc;border-radius:6px;padding:8px 4px}
.klb-nlist .klb-ndate b{display:block;font-size:22px;color:#1a5fb4;line-height:1.1}
.klb-nlist .klb-ndate span{font-size:12px;color:#7a8aa0}
.klb-nlist .klb-ntit{flex:1}
.klb-nlist .klb-ntit a{font-size:15px;color:#222}
.klb-nlist .klb-ntit a:hover{color:#1a5fb4}
.klb-nlist .klb-ntit p{font-size:13px;color:#8a99ad;margin-top:4px}
.klb-feat{background:#0d3b8c;border-radius:8px;padding:26px;color:#fff}
.klb-feat h3{font-size:20px;margin-bottom:18px;border-left:4px solid #6aa8e8;padding-left:10px}
.klb-feat li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15);font-size:14px}
.klb-feat li:last-child{border-bottom:0}
.klb-feat .klb-ic{flex:0 0 36px;height:36px;background:rgba(255,255,255,.15);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:bold}
.klb-adv{background:#fff}
.klb-adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.klb-adv-i{text-align:center;padding:18px}
.klb-adv-i .klb-num{font-size:34px;color:#1a5fb4;font-weight:bold}
.klb-adv-i h4{font-size:16px;color:#0d3b8c;margin:8px 0}
.klb-adv-i p{font-size:13px;color:#7a8aa0}
.klb-footer{background:#0a2a63;color:#b8c9e3;padding:44px 0 0;margin-top:40px}
.klb-fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding-bottom:30px}
.klb-fgrid h4{color:#fff;font-size:16px;margin-bottom:14px}
.klb-fgrid p,.klb-fgrid li{font-size:13px;line-height:2}
.klb-fgrid a:hover{color:#fff}
.klb-copy{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:16px 0;font-size:12px;color:#8aa3c7}
.klb-page{background:#fff;padding:36px;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.klb-page h1{font-size:26px;color:#0d3b8c;padding-bottom:14px;border-bottom:2px solid #eaf2fc;margin-bottom:20px}
.klb-page h2{font-size:19px;color:#1a5fb4;margin:22px 0 10px}
.klb-page p{margin-bottom:12px;font-size:15px;color:#444}
.klb-crumbs{font-size:13px;color:#7a8aa0;margin-bottom:18px}
.klb-crumbs a{color:#1a5fb4}
.klb-prod-detail{display:grid;grid-template-columns:1fr 1.2fr;gap:30px}
.klb-prod-detail .klb-pimg{border:1px solid #e3eaf5;border-radius:8px;overflow:hidden}
.klb-prod-detail table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
.klb-prod-detail th,.klb-prod-detail td{border:1px solid #e3eaf5;padding:9px 12px;text-align:left}
.klb-prod-detail th{background:#eaf2fc;color:#0d3b8c;width:130px;font-weight:500}
.klb-btn{display:inline-block;background:#1a5fb4;color:#fff;padding:10px 26px;border-radius:4px;font-size:14px;transition:.2s}
.klb-btn:hover{background:#0d3b8c}
.klb-news-detail img{border-radius:8px;margin:14px 0}
.klb-news-detail .klb-meta{font-size:13px;color:#8a99ad;margin-bottom:16px;padding-bottom:14px;border-bottom:1px dashed #e3eaf5}
.klb-404{text-align:center;padding:80px 20px}
.klb-404 .klb-code{font-size:90px;color:#1a5fb4;font-weight:bold;line-height:1}
.klb-404 h1{font-size:24px;color:#0d3b8c;margin:14px 0}
.klb-404 p{color:#7a8aa0;margin-bottom:24px}
@media(max-width:900px){
  .klb-nav{position:fixed;top:80px;left:-100%;width:78%;max-width:320px;height:calc(100vh - 80px);background:#fff;box-shadow:2px 0 12px rgba(0,0,0,.12);transition:.3s;padding:20px;z-index:99}
  .klb-nav.klb-open{left:0}
  .klb-nav>ul{flex-direction:column;gap:0}
  .klb-nav>ul>li>a{padding:14px 10px;border-bottom:1px solid #eef2f9}
  .klb-burger{display:flex}
  .klb-cats,.klb-adv-grid{grid-template-columns:repeat(2,1fr)}
  .klb-prods{grid-template-columns:repeat(2,1fr)}
  .klb-news{grid-template-columns:1fr}
  .klb-fgrid{grid-template-columns:1fr 1fr}
  .klb-prod-detail{grid-template-columns:1fr}
  .klb-slide,.klb-slide img{height:240px}
  .klb-slide .klb-cap{padding:24px 18px 18px}
  .klb-slide .klb-cap h2{font-size:20px}
}
@media(max-width:560px){
  .klb-cats,.klb-prods,.klb-adv-grid,.klb-fgrid{grid-template-columns:1fr}
  .klb-topbar .klb-wrap{justify-content:center;gap:8px}
}