*{margin:0;padding:0;box-sizing:border-box}

body{font-family:"Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;color:#333;line-height:1.8;background:#f5f5f5;font-size:14px;}

a{text-decoration:none;color:inherit}

.szbhl-container{max-width:1156px;margin:0 auto;padding:0 20px}

.szbhl-header{background:hsl(201, 65%, 31%);color:#fff;padding:18px 0;position:sticky;top:0;z-index:100}

.szbhl-header-inner{display:flex;justify-content:space-between;align-items:center}

.szbhl-logo{font-size:22px;font-weight:700}

.szbhl-nav{display:flex;gap:25px}

.szbhl-nav-link{color:rgba(255,255,255,.85);font-size:15px;padding:5px 0;border-bottom:2px solid transparent;transition:.3s}

.szbhl-nav-link:hover,.szbhl-nav-link.szbhl-active{color:#fff;border-bottom-color:hsl(226, 56%, 54%)}

.szbhl-banner,.szbhl-page-banner{min-height:320px;display:flex;align-items:center;justify-content:center;text-align:center;color:#fff}

.szbhl-banner-mask{background:rgba(0,0,0,.45);padding:50px 30px;border-radius:6px}

.szbhl-banner h1,.szbhl-page-banner h1{font-size:32px;margin-bottom:12px}

.szbhl-banner p{font-size:16px;opacity:.9}

.szbhl-section{padding:68px 0}

.szbhl-bg-light{background:#fefefe}

.szbhl-section-title{text-align:center;font-size:26px;margin-bottom:40px;color:hsl(201, 60%, 19%);position:relative}

.szbhl-section-title::after{content:"";display:block;width:50px;height:3px;background:dashed 2px hsl(226, 56%, 54%);margin:12px auto 0}

.szbhl-content{max-width:800px;margin:0 auto;font-size:14px;line-height:1.8;white-space:pre-wrap}

.szbhl-product-grid,.szbhl-case-grid,.szbhl-service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}

.szbhl-product-card,.szbhl-case-card,.szbhl-service-card{background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 0 0 1px rgba(0,0,0,.05);transition:.3s;border:1px solid hsl(201, 65%, 31%)}

.szbhl-product-card:hover,.szbhl-case-card:hover,.szbhl-service-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px rgba(0,0,0,.08)}

.szbhl-product-card img,.szbhl-case-card img,.szbhl-service-card img{width:100%;height:200px;object-fit:cover}

.szbhl-product-card h3,.szbhl-case-card h3,.szbhl-service-card h3{padding:15px 18px 8px;font-size:17px}

.szbhl-news-list{max-width:800px;margin:0 auto}

.szbhl-news-item{background:#fff;padding:20px 25px;margin-bottom:15px;border-radius:6px;box-shadow:0 2px 8px rgba(0,0,0,.06)}

.szbhl-news-item h3{font-size:17px;margin-bottom:8px}

.szbhl-news-date{color:#999;font-size:13px}

.szbhl-product-detail{display:flex;gap:30px;align-items:flex-start;flex-wrap:wrap}

.szbhl-detail-img{width:400px;height:300px;object-fit:cover;overflow:hidden;border-radius:6px;box-shadow:0 4px 16px rgba(0,0,0,.1)}
.szbhl-detail-img img{width:100%;height:100%;object-fit:cover;display:block;border-radius:inherit}

.szbhl-product-detail .szbhl-content{flex:1;min-width:280px;margin:0}

.szbhl-footer{background:hsl(201, 60%, 19%);color:rgba(255,255,255,.7);text-align:center;padding:30px 0;font-size:14px}



/* 汉堡菜单按钮 */

.szbhl-hamburger{display:none;flex-direction:column;justify-content:space-around;width:28px;height:24px;background:transparent;border:none;cursor:pointer;padding:0;z-index:110}

.szbhl-hamburger span{display:block;width:100%;height:3px;background:#fff;border-radius:2px;transition:.3s}

.szbhl-hamburger-active span:nth-child(1){transform:rotate(45deg) translate(6px,6px)}

.szbhl-hamburger-active span:nth-child(2){opacity:0}

.szbhl-hamburger-active span:nth-child(3){transform:rotate(-45deg) translate(6px,-6px)}



.szbhl-nav-link{text-shadow:0 0 0 transparent;transition:all .35s ease}.szbhl-nav-link:hover{text-shadow:0 0 10px rgba(255,255,255,.9);transform:translateY(-2px)}
.szbhl-header{background:linear-gradient(120deg,hsl(201, 65%, 31%),hsl(226, 56%, 54%),hsl(201, 65%, 31%));background-size:220% 220%;animation:szbhl-hg 9s ease infinite}@keyframes szbhl-hg{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@media(max-width:768px){

    .szbhl-hamburger{display:flex}

    .szbhl-nav{display:none;flex-direction:column;width:100%;gap:0;background:hsl(201, 65%, 31%);padding:0;position:absolute;top:100%;left:0}

    .szbhl-nav.szbhl-nav-open{display:flex}

    .szbhl-nav-link{display:block;padding:12px 20px;border-bottom:1px solid rgba(255,255,255,.1)}

    .szbhl-header-inner{flex-direction:row;justify-content:space-between;align-items:center;gap:10px;width:100%}

    .szbhl-banner h1,.szbhl-page-banner h1{font-size:24px}

    .szbhl-product-grid,.szbhl-case-grid,.szbhl-service-grid{grid-template-columns:1fr}

    .szbhl-product-detail{flex-direction:column}

    .szbhl-detail-img{width:100%}
}