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

body{font-family:"Lato", "PingFang SC", "Microsoft YaHei", sans-serif;color:#333;line-height:1.7;background:#f5f5f5;font-size:14px;}

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

.bstpy-container{max-width:1194px;margin:0 auto;padding:0 20px}

.bstpy-header{background:hsl(259, 65%, 36%);color:#fff;padding:20px 0;position:sticky;top:0;z-index:100}

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

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

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

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

.bstpy-nav-link:hover,.bstpy-nav-link.bstpy-active{color:#fff;border-bottom-color:hsl(283, 77%, 60%)}

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

.bstpy-banner-mask{background:rgba(0,0,0,.45);padding:50px 30px;border-radius:8px}

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

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

.bstpy-section{padding:73px 0}

.bstpy-bg-light{background:#fafafa}

.bstpy-section-title{text-align:center;font-size:26px;margin-bottom:40px;color:hsl(259, 60%, 24%);position:relative}

.bstpy-section-title::after{content:"";display:block;width:50px;height:3px;background:double 2px hsl(283, 77%, 60%);margin:12px auto 0}

.bstpy-content{max-width:800px;margin:0 auto;font-size:14px;line-height:1.7;white-space:pre-wrap}

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

.bstpy-product-card,.bstpy-case-card,.bstpy-service-card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 6px rgba(0,0,0,.06);transition:.3s;border:1px solid rgba(0,0,0,.06)}

.bstpy-product-card:hover,.bstpy-case-card:hover,.bstpy-service-card:hover{transform:translateY(-4px);box-shadow:0 4px 16px rgba(0,0,0,.10)}

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

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

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

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

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

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

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

.bstpy-detail-img{width:400px;height:300px;object-fit:cover;overflow:hidden;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.1)}
.bstpy-detail-img img{width:100%;height:100%;object-fit:cover;display:block;border-radius:inherit}

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

.bstpy-footer{background:hsl(259, 60%, 24%);color:rgba(255,255,255,.7);text-align:center;padding:30px 0;font-size:14px}



/* 汉堡菜单按钮 */

.bstpy-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}

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

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

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

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



@supports ((-webkit-background-clip:text) or (background-clip:text)){.bstpy-section-title{background-image:linear-gradient(90deg,hsl(259, 65%, 36%),hsl(283, 77%, 60%),hsl(259, 65%, 36%));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;background-size:200% 100%;animation:bstpy-shim 4s linear infinite}}@keyframes bstpy-shim{to{background-position:200% center}}
@media(max-width:768px){

    .bstpy-hamburger{display:flex}

    .bstpy-nav{display:none;flex-direction:column;width:100%;gap:0;background:hsl(259, 65%, 36%);padding:0;position:absolute;top:100%;left:0}

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

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

    .bstpy-header-inner{flex-direction:row;justify-content:space-between;align-items:center;gap:6px}

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

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

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

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