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

a{
    text-decoration: none;

}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.bannerbox{
    height:150px;
    border-radius:5px 5px 0 0;
    overflow: hidden;
}

.box{
    margin:0 0 20px;
    padding:30px 20px;
    border-left:solid 3px #a7c5f9;
    border-right:solid 3px #a7c5f9;
    border-bottom:solid 3px #a7c5f9;
}

/* 公告栏样式 */
.announcement {
    margin:0 0 20px;
    font-size:17px;
    
}

.fujian{
    border-bottom: 1px solid #ccc;
    margin-bottom: 20px;
}
.fujian h5{
    display: inline-block;
    color:#97171c;
    font-size:18px;
    padding-bottom: 5px;
    border-bottom: 3px solid #97171c;
}

/* 方块链接网格容器 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}


/* 方块链接样式 */
.grid-item {
    background-color: white;
    padding: 25px 30px;
    border-radius: 3px;
    background: linear-gradient(135deg, #e6f3ff 0%, #f0f8ff 100%);
    text-align: center;
    text-decoration: none;
    color: #333;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.grid-item img{
    display:inline-block;
    width:50px;
    height:50px;
}
.grid-item p{
    font-size:17px;
    margin-top:10px;
}

/* 二级页面样式 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.page-header h1 {
    margin: 0;
    font-size: 24px;
    color: #333;
}

.back-link {
    text-decoration: none;
    color: #666;
    padding: 8px 15px;
    border-radius: 5px;
    background-color: #f0f0f0;
    transition: background-color 0.3s ease;
}

.back-link:hover {
    background-color: #e0e0e0;
} 

.luokuan{
    margin-top:30px
}
.luokuan p{
    text-align: right;
    margin-top:10px;
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);  /* 移动端显示2列 */
        gap: 10px;  /* 减小格子间距 */
        padding: 10px;  /* 减小容器内边距 */
    }

    .grid-container a {
        padding: 10px;  /* 减小方块内边距 */
    }

    .grid-container img {
        max-width: 100%;  /* 确保图片响应式 */
        height: auto;
    }

    /* 标题适配 */
    h1 {
        font-size: 24px;
        margin: 15px 0;
    }

    /* 导航栏适配 */
    .nav-container {
        padding: 10px;
    }

    .nav-container a {
        padding: 5px 10px;
        font-size: 14px;
    }

    /* 容器宽度适配 */
    .container {
        width: 100%;
        padding: 10px;
    }

    /* banner图片适配 */
    .bannerbox img {
        width: 100%;
        height: auto;
    }

    /* 公告栏文字适配 */
    .announcement {
        margin: 20px 0 15px;
        padding: 0 10px;
    }

    .announcement p {
        font-size: 14px;
        line-height: 1.5;
    }

    /* 附件标题适配 */
    .fujian {
        margin-bottom: 15px;
        padding: 0 10px;
    }

    .fujian h5 {
        font-size: 14px;
    }

    /* 落款适配 */
    .luokuan {
        margin-top: 20px;
        padding: 0 10px;
    }

    .luokuan p {
        font-size: 13px;
        line-height: 1.8;
    }
}

/* 更小屏幕的适配 */
@media screen and (max-width: 480px) {
    .grid-container {
        grid-template-columns: 1fr;  /* 超小屏幕显示1列 */
    }

    /* 超小屏幕额外优化 */
    .grid-item {
        padding: 15px;
        font-size: 14px;
    }

    .announcement {
        margin: 15px 0 10px;
    }
}