*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",SimHei,sans-serif;}
body{background:#f7f8fa;color:#333;font-size:15px;line-height:1.7;}
img {max-width:100%;height: auto;}
.img-500{max-width:500px;max-height:500px;border-radius:5px;}
.container{max-width:1200px;margin:0 auto;padding:0 10px;}
.top-bar{background:#1a1a1a;color:#eee;padding:7px 0;font-size:13px;}
.top-bar .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:5px;}
.header{background:#fff;box-shadow:0 1px 5px #e2e2e2;position:sticky;top:0;z-index:999;}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 0;}
.logo{font-size:26px;font-weight:bold;color:#000000;text-decoration:none;}
.menu-pc{display:flex;gap:32px;align-items:center;position:relative;}
.menu-pc .nav-item{position:relative;padding:9px 0;}
.menu-pc .nav-item>a{color:#333;text-decoration:none;font-size:15px;display:block;}
.menu-pc .nav-item>a:hover{color:#004c99;border-bottom:2px solid #004c99;}
.dropdown-box{
    position:absolute;
    top:100%;
    left:0;
    background:#fff;
    box-shadow:0 2px 10px #ddd;
    width:140px;
    display:none;
    z-index:9999;
}
.dropdown-box a{
    display:block;
    padding:10px 16px;
    color:#333;
    text-decoration:none;
    font-size:14px;
    border-bottom:1px #f1f1f1 solid;
}
.dropdown-box a:hover{
    background:#004c99;
    color:#fff;
}
.nav-item:hover .dropdown-box{display:block;}
.menu-mobile{display:none;font-size:26px;cursor:pointer;color:#333;}
.banner{width:100%;height:300px;background:#004c99;color:#fff;display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:500;margin-bottom:30px;}
.block{background:#fff;padding:32px;border-radius:8px;box-shadow:0 1px 5px #eee;margin-bottom:20px;}
.block-title{font-size:23px;margin-bottom:11px;padding-bottom:10px;border-bottom:3px solid #004c99;display:inline-block;}
.grid-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:26px;margin:20px 0;}
.card{border:1px solid #eee;border-radius:8px;overflow:hidden;transition:all 0.25s ease;}
.card:hover{box-shadow:0 4px 15px #dce7f2;transform:translateY(-4px);}
.card img{width:100%;height:182px;object-fit:cover;border:none;display:block;}
.card-info{padding:16px;}
.card-info h3{font-size:17px;margin-bottom:9px;color:#222;}
.btn{display:inline-block;background:#004c99;color:#fff;padding:5px 12px;border-radius:5px;text-decoration:none;font-size:15px;}
.btn:hover{background:#003b7a;}
.form-item{margin-bottom:16px;}
.form-item label{display:block;margin-bottom:7px;font-weight:500;}
.form-item input,.form-item textarea{width:100%;padding:11px;border:1px solid #ddd;border-radius:5px;font-size:15px;background:#fff;}
.form-item textarea{min-height:120px;resize:vertical;}
.footer{background:#1a1a1a;color:#bbbbbb;padding:40px 0;margin-top:30px;font-size:14px;}
.footer p{margin:7px 0;line-height:1.8;}
.float-call{position:fixed;right:18px;bottom:35px;background:#dddddd;color:#fff;padding:6px 10px;border-radius:20px;text-decoration:none;box-shadow:0 3px 12px #999;z-index:9999;}
@media screen and (max-width:768px){
    .menu-pc{display:none;position:absolute;left:0;top:100%;width:100%;background:#fff;flex-direction:column;padding:20px;box-shadow:0 3px 8px #ddd;gap:18px;align-items:flex-start;}
    .menu-mobile{display:block;}
    .banner{height:200px;font-size:24px;}
    .dropdown-box{position:static;box-shadow:none;width:100%;padding-left:20px;}
}
.an1{margin:1px;background:#666666;color:#fff;cursor: pointer;border-radius:8px;border: 1px solid #f2f2f2;padding:5px;;text-decoration:none}
.an1:hover {color: #ddd;border:2px solid #ddd}