/*全局基础*/
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family: "SimSun",宋体,sans-serif;
    font-size: 16px;
    color: #333;
    line-height: 1.7;
    background-color: #ffffff;
}
.container{
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
}
a{
    text-decoration: none;
    color: inherit;
}
ul{
    list-style: none;
}

/*顶部通栏*/
.top-bar{
    background: #111;
    color: #fff;
    font-size: 15px;
    padding: 8px 0;
}
.top-bar .container{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap:6px;
}
.tel-call{
    color:#ff4422;
    font-weight:bold;
}

/*头部导航*/
.header{
    background: #ffffff;
    box-shadow: 0 1px 5px #ddd;
    padding:12px 0;
}
.nav-wrap{
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/*===== LOGO：活力红 + 深灰蓝，安全稳重 =====*/
.logo {
    font-size: 28px;
    line-height: 1;
    text-decoration: none;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif !important;
}

.logo-main {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif !important;
    font-weight: 900;
    color: #d82626;
    letter-spacing: 1px;
}

.logo-domain {
    font-family: Arial, Helvetica, sans-serif !important;
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-left: 12px;
    vertical-align: baseline;
}
/*汉堡菜单*/
.hamburger{
    display: none;
    flex-direction: column;
    gap:5px;
    cursor: pointer;
}
.hamburger span{
    width:28px;
    height:3px;
    background:#222;
}
.nav-list{
    display: flex;
    gap:32px;
}
.nav-list a{
    font-size:17px;
    padding: 6px 0;
}
.nav-list a.active{
    color:#d82626;
    font-weight:bold;
}

/*Banner横幅*/
.banner{
    background: #224477;
    color:#fff;
    padding:70px 0;
}
.banner-text h1{
    font-size: 32px;
    margin-bottom: 15px;
    line-height: 1.4;
}
.banner-text p{
    font-size: 18px;
    margin-bottom: 25px;
}
.btn-tel{
    display: inline-block;
    background-color:#d82626;
    color:#fff;
    padding: 14px 30px;
    border-radius: 6px;
    font-size:18px;
    font-weight:bold;
}

/*通用区块*/
.section{
    padding: 50px 0;
}
.section-title{
    text-align:center;
    margin-bottom:35px;
}
.section-title h2{
    font-size: 26px;
    margin-bottom: 8px;
}

/*服务板块*/
.service-box{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap:24px;
}
.service-item{
    padding:22px;
    border:1px solid #eee;
    border-radius: 8px;
}
.service-item h3{
    margin-bottom: 10px;
    font-size: 20px;
}

/*优势板块*/
.adv-wrap{
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap:22px;
}
.adv-item{
    padding: 20px;
    border:1px solid #eee;
    border-radius: 8px;
}
.adv-item h4{
    margin-bottom: 8px;
    font-size:18px;
}

/*资讯板块*/
.news-wrap{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap:24px;
}
.news-item{
    padding:20px;
    border:1px solid #eee;
    border-radius: 8px;
}
.news-item h3{
    margin-bottom: 8px;
    font-size: 18px;
}

/*页脚*/
.footer{
    background:#1a1a1a;
    color:#cccccc;
    padding:45px 0;
}
.footer-wrap{
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap:30px;
    margin-bottom: 30px;
}
.footer-box h4{
    color:#ffffff;
    margin-bottom: 16px;
    font-size: 18px;
}
.footer-box li{
    margin-bottom: 8px;
}
.footer-tel{
    margin-top: 12px;
    color:#ff4422;
    font-weight:bold;
}
.copyright{
    text-align:center;
    padding-top:20px;
    border-top: 1px solid #333;
    font-size: 14px;
}

/*移动端适配*/
@media(max-width:768px){
    .hamburger{
        display:flex;
    }
    .nav-list{
        position: fixed;
        top:0;
        right:-260px;
        width:260px;
        height:100vh;
        background:#fff;
        flex-direction: column;
        padding: 60px 20px;
        transition: 0.3s;
        box-shadow: -2px 0 8px #999;
    }
    .nav-list.show{
        right: 0;
    }
    .service-box{
        grid-template-columns: 1fr 1fr;
    }
    .adv-wrap{
        grid-template-columns: 1fr 1fr;
    }
    .news-wrap{
        grid-template-columns: 1fr;
    }
    .footer-wrap{
        grid-template-columns: 1fr;
    }
    .banner-text h1{
        font-size: 24px;
    }
}