*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Microsoft YaHei','PingFang SC',Arial,sans-serif;font-size:14px;color:#333;background:#f0f0f0}
a{color:#333;text-decoration:none}
.tophead{background:#003366}
.head{padding:0 20px}
.head_m{display:flex;justify-content:space-between;align-items:center;height:36px}
.head_l ul{list-style:none;display:flex;gap:15px;font-size:13px;color:#fff}
.head_l a{color:#fff}
.head_r a{color:#fff;font-size:16px;font-weight:bold}
.m{max-width:1200px;margin:0 auto;padding:15px 10px;display:flex;gap:15px}
.left{width:200px;flex-shrink:0}
.right{flex:1;min-width:0}
.nav{background:#fff;border:1px solid #ddd;padding-bottom:10px}
.nav_tit{background:#0066cc;color:#fff;padding:10px 15px;font-size:14px;font-weight:bold}
.nav ul{list-style:none;padding:0 15px}
.nav li{border-bottom:1px solid #eee}
.nav a{display:block;padding:8px 0;color:#333;font-size:13px}
.content{background:#fff;border:1px solid #ddd;padding:20px}
.foot{background:#003366;padding:20px;text-align:center;color:#fff;font-size:13px}
.c_b{clear:both}.b20{height:20px}
.breadcrumb{padding:8px 0;margin-bottom:15px;font-size:13px;color:#999;border-bottom:1px solid #eee}
.breadcrumb a{color:#0066cc}
.page-title{font-size:24px;color:#003366;padding-bottom:12px;border-bottom:2px solid #0066cc;margin-bottom:15px}
.page-title-en{font-size:14px;color:#999;font-weight:normal}
.page-desc{color:#666;line-height:1.8;margin-bottom:20px;padding:12px 15px;background:#f9f9f9;border-left:3px solid #0066cc}
.spec-box{background:#f9f9f9;padding:15px 20px;margin-bottom:20px;border-radius:4px}
.spec-box h2{font-size:16px;color:#003366;margin-bottom:10px}
.spec-list{list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.spec-list li{background:#fff;border:1px solid #ddd;padding:6px 14px;border-radius:3px;font-size:13px}
.prod-gallery{margin-bottom:30px}
.prod-gallery h2{font-size:18px;color:#003366;margin-bottom:15px;padding-bottom:8px;border-bottom:1px solid #eee}
.gallery-grid{display:flex;flex-wrap:wrap;gap:15px}
.gallery-item{flex:0 0 calc(25% - 12px);min-width:180px;background:#fff;border:1px solid #eee;border-radius:4px;padding:8px;text-align:center}
.gallery-item img{width:100%;height:140px;object-fit:cover;border-radius:3px;margin-bottom:6px;background:#e8e8e8}
.gallery-item p{font-size:12px;color:#666;margin:0}
.prod-row{display:flex;gap:20px;margin-bottom:25px;padding:15px;background:#fff;border:1px solid #eee;border-radius:4px}
.prod-row-alt{flex-direction:row-reverse;background:#f9f9f9}
.prod-img-box{flex:0 0 300px}
.prod-img-box img{width:100%;height:200px;object-fit:cover;border-radius:4px;background:#e8e8e8}
.prod-txt-box{flex:1;display:flex;flex-direction:column;justify-content:center}
.prod-txt-box h3{font-size:16px;color:#003366;margin-bottom:10px}
.prod-txt-box p{color:#666;font-size:13px;line-height:1.7;margin-bottom:12px}
.prod-btn{display:inline-block;padding:8px 20px;background:#0066cc;color:#fff;border-radius:3px;font-size:13px;width:fit-content}
.prod-btn:hover{background:#0055aa;color:#fff}
.contact-box{background:#003366;color:#fff;padding:25px;margin-top:20px;border-radius:4px;text-align:center}
.contact-box h2{font-size:18px;margin-bottom:15px;color:#fff}
.contact-box p{margin-bottom:8px;font-size:14px}
.tel-btn{display:inline-block;padding:10px 30px;background:#fff;color:#003366;font-weight:bold;border-radius:4px;font-size:15px;margin-top:10px}
.tel-btn:hover{background:#eee}
.cat-grid{display:flex;flex-direction:column;gap:20px}
.cat-item{display:flex;gap:20px;background:#fff;border:1px solid #eee;padding:15px;border-radius:4px}
.cat-img{flex:0 0 280px}
.cat-img img{width:100%;height:180px;object-fit:cover;border-radius:4px;background:#e8e8e8}
.cat-info{flex:1;display:flex;flex-direction:column;justify-content:center}
.cat-info h3{font-size:18px;color:#003366;margin-bottom:8px}
.cat-info h3 a{color:#003366}
.cat-info h3 a:hover{color:#0066cc}
.cat-info p{color:#666;font-size:13px;line-height:1.7;margin-bottom:12px}
.cat-btn{display:inline-block;padding:8px 22px;background:#0066cc;color:#fff;border-radius:3px;font-size:13px;width:fit-content}
.cat-btn:hover{background:#0055aa;color:#fff}
@media(max-width:768px){
.m{flex-direction:column;padding:10px 5px}
.left{width:100%;flex-shrink:1}
.right{width:100%}
.content{padding:12px}
.gallery-item{flex:0 0 calc(50% - 8px);min-width:130px}
.gallery-item img{height:100px}
.prod-row{flex-direction:column;gap:10px}
.prod-row-alt{flex-direction:column}
.prod-img-box{flex:0 0 auto}
.prod-img-box img{height:180px}
.cat-item{flex-direction:column}
.cat-img{flex:0 0 auto}
.cat-img img{height:160px}
.page-title{font-size:20px}
.spec-list li{flex:0 0 calc(50% - 5px)}
.contact-box{padding:20px 15px}
.head_l ul{gap:8px;font-size:12px}
.head_r a{font-size:14px}
}
@media(max-width:480px){
.gallery-item{flex:0 0 calc(50% - 4px)}
.gallery-item img{height:80px}
.gallery-item p{font-size:11px}
.prod-img-box img{height:150px}
.prod-txt-box h3{font-size:14px}
.cat-info h3{font-size:16px}
.page-desc{font-size:13px}
}
@media print{
.tophead,.foot,.left,.breadcrumb{display:none}
.m{padding:0}.content{border:none;padding:0}
}