:root{
  --hl-primary:#0a4d8c;
  --hl-primary-dark:#073a6b;
  --hl-accent:#1a8fc4;
  --hl-bg:#f4f8fb;
  --hl-text:#2c3e50;
  --hl-muted:#6b7c8d;
  --hl-border:#e1e8ef;
  --hl-white:#ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--hl-text);background:var(--hl-white);line-height:1.7;font-size:15px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block;border:0}
ul{list-style:none}

.hl-topbar{background:var(--hl-primary-dark);color:#cfe3f5;font-size:13px;padding:7px 0}
.hl-topbar .hl-wrap{display:flex;justify-content:space-between;align-items:center}
.hl-topbar a{color:#fff}
.hl-topbar .hl-phone{font-weight:600;font-size:15px;color:#ffd97a}

.hl-wrap{max-width:1200px;margin:0 auto;padding:0 20px}

.hl-header{background:var(--hl-white);position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(10,77,140,.08)}
.hl-header .hl-wrap{display:flex;align-items:center;justify-content:space-between;height:80px}
.hl-logo img{height:52px;width:auto}
.hl-nav ul{display:flex;gap:8px}
.hl-nav a{display:block;padding:10px 20px;font-size:15px;color:var(--hl-text);border-radius:4px;transition:all .2s;font-weight:500}
.hl-nav a:hover,.hl-nav a.hl-active{color:var(--hl-primary);background:var(--hl-bg)}
.hl-burger{display:none;background:none;border:0;cursor:pointer;width:30px;height:22px;position:relative}
.hl-burger span{display:block;height:2px;background:var(--hl-primary);margin:5px 0;border-radius:2px;transition:.3s}

.hl-banner{position:relative;overflow:hidden;height:480px}
.hl-slides{position:relative;height:100%}
.hl-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s;display:flex;align-items:center;justify-content:center}
.hl-slide.hl-on{opacity:1}
.hl-slide img{width:100%;height:100%;object-fit:cover}
.hl-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(7,58,107,.55),rgba(10,77,140,.25))}
.hl-banner-text{position:relative;z-index:2;text-align:center;color:#fff;max-width:700px;padding:0 20px}
.hl-banner-text h1{font-size:42px;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3);font-weight:700}
.hl-banner-text p{font-size:18px;opacity:.92;margin-bottom:24px}
.hl-banner-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:10px}
.hl-banner-dots button{width:10px;height:10px;border-radius:50%;border:0;background:rgba(255,255,255,.5);cursor:pointer;padding:0}
.hl-banner-dots button.hl-on{background:#fff;width:28px;border-radius:5px}

.hl-section{padding:64px 0}
.hl-section.hl-alt{background:var(--hl-bg)}
.hl-sec-head{text-align:center;margin-bottom:40px}
.hl-sec-head h2{font-size:30px;color:var(--hl-primary);margin-bottom:10px;font-weight:700}
.hl-sec-head .hl-sub{color:var(--hl-muted);font-size:14px;letter-spacing:2px}
.hl-sec-head .hl-line{width:60px;height:3px;background:var(--hl-accent);margin:14px auto 0;border-radius:2px}

.hl-about{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.hl-about-img{border-radius:8px;overflow:hidden;box-shadow:0 8px 30px rgba(10,77,140,.15)}
.hl-about-img img{width:100%;height:380px;object-fit:cover}
.hl-about-text h3{font-size:24px;color:var(--hl-primary);margin-bottom:16px}
.hl-about-text p{color:var(--hl-muted);margin-bottom:14px;text-align:justify}
.hl-btn{display:inline-block;padding:11px 32px;background:var(--hl-primary);color:#fff;border-radius:4px;font-size:14px;transition:background .2s;border:0;cursor:pointer}
.hl-btn:hover{background:var(--hl-primary-dark)}

.hl-features{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.hl-feature{background:var(--hl-white);padding:32px 22px;border-radius:8px;text-align:center;box-shadow:0 2px 12px rgba(0,0,0,.05);border-top:3px solid var(--hl-accent)}
.hl-feature .hl-ico{width:54px;height:54px;margin:0 auto 16px;border-radius:50%;background:var(--hl-bg);display:flex;align-items:center;justify-content:center}
.hl-feature .hl-ico svg{width:28px;height:28px;fill:var(--hl-primary)}
.hl-feature h4{font-size:17px;margin-bottom:8px;color:var(--hl-primary)}
.hl-feature p{font-size:13px;color:var(--hl-muted)}

.hl-products{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.hl-prod{background:var(--hl-white);border-radius:8px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:transform .25s,box-shadow .25s}
.hl-prod:hover{transform:translateY(-5px);box-shadow:0 12px 28px rgba(10,77,140,.15)}
.hl-prod-img{height:200px;overflow:hidden}
.hl-prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.hl-prod:hover .hl-prod-img img{transform:scale(1.06)}
.hl-prod-info{padding:18px}
.hl-prod-info h4{font-size:16px;color:var(--hl-primary);margin-bottom:6px}
.hl-prod-info p{font-size:13px;color:var(--hl-muted);line-height:1.5}

.hl-base{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.hl-base-item{border-radius:8px;overflow:hidden;height:240px;position:relative}
.hl-base-item img{width:100%;height:100%;object-fit:cover}
.hl-base-item .hl-cap{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(7,58,107,.8));color:#fff;padding:30px 16px 14px;font-size:14px}

.hl-news-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.hl-news-item{display:flex;gap:18px;padding:16px;background:var(--hl-white);border-radius:8px;transition:box-shadow .2s;align-items:center}
.hl-news-item:hover{box-shadow:0 4px 18px rgba(10,77,140,.12)}
.hl-news-thumb{width:140px;height:100px;border-radius:6px;overflow:hidden;flex-shrink:0}
.hl-news-thumb img{width:100%;height:100%;object-fit:cover}
.hl-news-body h4{font-size:15px;color:var(--hl-text);margin-bottom:6px;line-height:1.4}
.hl-news-body .hl-date{font-size:12px;color:var(--hl-muted);margin-bottom:6px}
.hl-news-body p{font-size:13px;color:var(--hl-muted);line-height:1.5}

.hl-cta{background:linear-gradient(135deg,var(--hl-primary),var(--hl-primary-dark));color:#fff;text-align:center;padding:50px 20px;border-radius:10px}
.hl-cta h3{font-size:26px;margin-bottom:10px}
.hl-cta p{opacity:.9;margin-bottom:22px}

.hl-footer{background:#072c4f;color:#9db8d0;padding:50px 0 0;margin-top:0}
.hl-foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:36px}
.hl-footer h5{color:#fff;font-size:16px;margin-bottom:16px}
.hl-footer p,.hl-footer li{font-size:13px;line-height:2}
.hl-footer a:hover{color:#fff}
.hl-foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;text-align:center;font-size:12px;color:#7a9ab8}

.hl-breadcrumb{background:var(--hl-bg);padding:14px 0;font-size:13px;color:var(--hl-muted)}
.hl-breadcrumb a{color:var(--hl-primary)}

.hl-detail{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:30px}
.hl-detail-img{border-radius:8px;overflow:hidden}
.hl-detail-img img{width:100%;height:420px;object-fit:cover}
.hl-detail-info h1{font-size:26px;color:var(--hl-primary);margin-bottom:16px}
.hl-detail-info .hl-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0;padding:18px;background:var(--hl-bg);border-radius:8px}
.hl-detail-info .hl-meta div{font-size:13px}
.hl-detail-info .hl-meta b{color:var(--hl-primary)}
.hl-desc{padding:24px;background:var(--hl-white);border-radius:8px;border:1px solid var(--hl-border)}
.hl-desc h3{font-size:18px;color:var(--hl-primary);margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid var(--hl-accent)}
.hl-desc p{margin-bottom:12px;color:var(--hl-text);text-align:justify}

.hl-article{max-width:820px;margin:0 auto;padding:40px 20px}
.hl-article h1{font-size:28px;color:var(--hl-primary);margin-bottom:14px;line-height:1.4}
.hl-article .hl-art-meta{font-size:13px;color:var(--hl-muted);margin-bottom:24px;padding-bottom:14px;border-bottom:1px solid var(--hl-border)}
.hl-article img{width:100%;border-radius:8px;margin-bottom:24px}
.hl-article p{margin-bottom:16px;text-align:justify;color:var(--hl-text);line-height:1.9}

.hl-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.hl-contact-info{background:var(--hl-bg);padding:30px;border-radius:8px}
.hl-contact-info h3{color:var(--hl-primary);margin-bottom:18px}
.hl-contact-info li{padding:10px 0;border-bottom:1px dashed var(--hl-border);font-size:14px}

.hl-404{text-align:center;padding:100px 20px}
.hl-404 .hl-code{font-size:120px;font-weight:800;color:var(--hl-primary);line-height:1}
.hl-404 h1{font-size:24px;margin:16px 0}
.hl-404 p{color:var(--hl-muted);margin-bottom:24px}

@media(max-width:900px){
  .hl-banner{height:340px}
  .hl-banner-text h1{font-size:28px}
  .hl-banner-text p{font-size:15px}
  .hl-about,.hl-detail,.hl-contact-grid{grid-template-columns:1fr}
  .hl-features{grid-template-columns:repeat(2,1fr)}
  .hl-products{grid-template-columns:repeat(2,1fr)}
  .hl-base{grid-template-columns:1fr}
  .hl-news-grid{grid-template-columns:1fr}
  .hl-foot-grid{grid-template-columns:1fr 1fr}
  .hl-nav{position:fixed;top:80px;left:-100%;width:75%;height:calc(100vh - 80px);background:#fff;box-shadow:2px 0 12px rgba(0,0,0,.1);transition:left .3s;padding:20px;z-index:99}
  .hl-nav.hl-open{left:0}
  .hl-nav ul{flex-direction:column}
  .hl-burger{display:block}
  .hl-topbar .hl-hide-m{display:none}
}
@media(max-width:560px){
  .hl-features,.hl-products{grid-template-columns:1fr}
  .hl-foot-grid{grid-template-columns:1fr}
  .hl-about-img img{height:240px}
  .hl-detail-img img{height:260px}
}