*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft Yahei","PingFang SC",sans-serif;}
body{background:#f4f6f8;color:#333;line-height:1.8;}
a{text-decoration:none;color:#222;}
ul{list-style:none;}
/*头部导航*/
.header{background:#1a57b8;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,0.15);}
.nav-box{width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;height:72px;padding:0 15px;}
.logo{color:#fff;font-size:24px;font-weight:bold;letter-spacing:1px;}
.nav a{color:#fff;margin:0 14px;font-size:15px;padding:6px 0;border-bottom:2px solid transparent;transition:all 0.3s;}
.nav a:hover{color:#bcd0f5;border-bottom-color:#bcd0f5;}

/*轮播图*/
.slider-wrap{width:100%;height:460px;overflow:hidden;position:relative;}
.slider-item{width:100%;height:100%;display:none;position:absolute;left:0;top:0;animation:fadeIn 0.6s ease;}
.slider-item.active{display:block;}
@keyframes fadeIn{from{opacity:0.4;}to{opacity:1;}}
.slider-bg-img{
    width:100%;
    height:100%;
    object-fit: cover;
    display:block;
}
/*文字浮层，图片自带文字则html里删掉h1 p即可，css保留不动*/
.text-content{
    position: absolute;
    left:15%;
    top:50%;
    transform: translateY(-50%);
}
.slider-item h1{
    font-size:40px;
    margin-bottom:14px;
    text-shadow:0 2px 8px rgba(0,0,0,0.4);
}
.slider-item p{
    font-size:18px;
    opacity:0.95;
}

/*轮播圆点*/
.slider-dots{position:absolute;bottom:28px;width:100%;text-align:center;z-index:10;}
.dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.4);display:inline-block;margin:0 6px;cursor:pointer;transition:all 0.3s;}
.dot.active{background:#fff;width:30px;border-radius:6px;}
/*轮播箭头*/
.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;background:rgba(0,0,0,0.2);color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:50%;transition:all 0.3s;z-index:10;}
.slider-arrow:hover{background:rgba(0,0,0,0.4);}
.slider-arrow.prev{left:30px;}
.slider-arrow.next{right:30px;}

/*容器*/
.wrap{width:1200px;margin:50px auto;padding:0 15px;}
h2.title{text-align:center;font-size:28px;color:#1a57b8;margin-bottom:36px;position:relative;padding-bottom:14px;}
h2.title::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:50px;height:3px;background:#1a57b8;border-radius:2px;}

/*业务卡片首页*/
.business-home{display:grid;grid-template-columns:1fr 1fr 1fr;gap:26px;}
.business-card{background:#fff;padding:30px 26px;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,0.06);transition:all 0.3s;border-top:3px solid transparent;}
.business-card:hover{transform:translateY(-5px);box-shadow:0 8px 24px rgba(26,87,184,0.15);border-top-color:#1a57b8;}
.business-card h3{color:#1a57b8;margin-bottom:12px;font-size:18px;}
.business-card p{color:#666;font-size:14px;line-height:1.8;}
.more-link{color:#1a57b8;font-size:14px;}
.more-link:hover{text-decoration:underline;}

/*新闻首页*/
.news-home{background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,0.06);}
.news-item{padding:14px 0;border-bottom:1px solid #eee;display:flex;justify-content:space-between;align-items:center;}
.news-item:last-child{border-bottom:none;}
.news-item a{color:#333;font-size:15px;}
.news-item a:hover{color:#1a57b8;}
.news-date{color:#999;font-size:13px;flex-shrink:0;margin-left:20px;}

/*列表页*/
.item-box{background:#fff;padding:28px 30px;margin-bottom:18px;border-radius:6px;box-shadow:0 1px 8px rgba(0,0,0,0.05);}
.item-box h3{color:#1a57b8;margin-bottom:10px;}
.news-list-item{display:flex;justify-content:space-between;align-items:center;}
.news-list-item h3{font-size:16px;font-weight:normal;}

/*页面banner*/
.page-banner{width:100%;height:200px;background:linear-gradient(135deg,#1a57b8,#2563eb);display:flex;align-items:center;justify-content:center;color:#fff;}
.page-banner-inner{text-align:center;}
.page-banner h1{font-size:32px;margin-bottom:8px;}
.page-banner p{opacity:0.9;font-size:15px;}

/*关于我们数据统计*/
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:30px;}
.stat-item{background:#fff;padding:30px;text-align:center;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,0.06);}
.stat-num{font-size:36px;font-weight:bold;color:#1a57b8;}
.stat-label{color:#666;font-size:14px;margin-top:8px;}

/*联系我们*/
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}

/*表单样式*/
.form-row{margin:16px 0;}
.form-row label{display:block;margin-bottom:6px;color:#555;font-size:14px;}
input,textarea{width:100%;padding:10px 12px;border:1px solid #d1d5db;border-radius:4px;font-size:14px;outline:none;transition:border 0.3s;}
input:focus,textarea:focus{border-color:#1a57b8;}
textarea{min-height:120px;resize:vertical;}
button{padding:10px 24px;background:#1a57b8;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:15px;transition:background 0.3s;}
button:hover{background:#154a9e;}

/*底部 二维码新版（已删除旧的重复footer代码）*/
.footer{
    background:#1a202c;
    color:#fff;
    padding:40px 20px;
    margin-top:70px;
}
.footer-inner{
    max-width:1200px;
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:30px;
}
.footer-left{
    flex:1;
}
.footer-qrcode{
    text-align:center;
}
.footer-qrcode img{
    width:110px;
    height:110px;
    object-fit:contain;
    background:#fff;
    padding:6px;
    border-radius:4px;
}
.qrcode-text{
    margin-top:8px;
    font-size:14px;
    opacity:0.85;
}

/*后台样式 后台页面不做响应式，固定宽度*/
.admin-wrap{width:1000px;margin:30px auto;background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,0.08);}
.admin-wrap h2{color:#1a57b8;margin-bottom:20px;}
.admin-menu{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:20px 0;}
.admin-menu a{display:block;padding:24px;background:#f0f4fa;border-radius:6px;text-align:center;color:#1a57b8;font-size:16px;transition:all 0.3s;}
.admin-menu a:hover{background:#1a57b8;color:#fff;}
table{width:100%;border-collapse:collapse;margin:15px 0;}
th,td{border:1px solid #e5e7eb;padding:12px;text-align:left;}
th{background:#f0f4fa;color:#1a57b8;}
.btn-add{display:inline-block;padding:8px 18px;background:#1a57b8;color:#fff;border-radius:4px;font-size:14px;margin-bottom:15px;}
.btn-del{color:#dc2626;}
.btn-edit{color:#1a57b8;margin-right:12px;}

/* ==========全局移动端适配【只保留一套媒体查询】========== */
@media (max-width:768px){
    /*导航容器*/
    .nav-box{
        width:100%;
        height:auto;
        flex-direction:column;
        padding:15px;
    }
    .logo{
        margin-bottom:10px;
    }
    .nav{
        display:flex;
        flex-wrap:wrap;
        justify-content:center;
    }
    .nav a{
        margin:0 8px;
        font-size:14px;
    }

    /*轮播图*/
    .slider-wrap{
        height:300px !important;
    }
    .text-content{
        left:8%;
    }
    .slider-item h1{
        font-size:26px !important;
    }
    .slider-item p{
        font-size:15px !important;
    }
    .slider-arrow{
        width:36px;
        height:36px;
        font-size:16px;
    }
    .slider-arrow.prev{left:10px;}
    .slider-arrow.next{right:10px;}

    /*主内容容器*/
    .wrap{
        width:100%;
        padding:0 15px;
        margin:30px 0;
    }
    h2.title{
        font-size:22px;
    }

    /*业务卡片三列变1列*/
    .business-home{
        grid-template-columns:1fr !important;
        gap:16px;
    }

    /*关于统计4格变2格*/
    .about-stats{
        grid-template-columns:repeat(2,1fr) !important;
        gap:12px;
    }

    /*联系表单两栏变一栏*/
    .contact-grid{
        grid-template-columns:1fr !important;
    }

    /*内页page‑banner*/
    .page-banner{
        height:140px;
    }
    .page-banner h1{
        font-size:24px;
    }

    /*底部footer二维码手机上下堆叠*/
    .footer-inner{
        width:100%;
        flex-direction:column;
        text-align:center;
    }
    .footer{
        padding:30px 15px;
    }

    /*后台管理页面手机禁止缩放错乱，最小横向滚动*/
    .admin-wrap{
        width:100%;
        padding:20px 10px;
        overflow-x:auto;
    }
}