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

body {
    padding-top: 55px; /* 根据导航栏高度调整 */padding-top: 55px; /* 根据导航栏高度调整 */
    line-height: 1.6;
    color: rgba(0, 0, 0, .85);
    font-size: 14px;
    font-family: Helvetica Neue, Helvetica, PingFang SC, Tahoma, Arial, sans-serif;
}

a{color:#666;}
a:hover{color:#00a2ca;text-decoration:none;}
a:focus,a:visited {text-decoration:none;}

/* 轮播图样式 */
.carousel {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
}

.carousel-inner {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-item {
    min-width: 100%;
    height: 400px;
    position: relative;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
}

.carousel-control.prev {
    left: 10px;
}

.carousel-control.next {
    right: 10px;
}

/* 亮点介绍样式 */
.features {
    padding: 50px 10px;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-item {
    padding: 20px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: box-shadow 0.3s ease;
}

.feature-item:hover {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.feature-item i {
    font-size: 36px;
    color: #007BFF;
    margin-bottom: 15px;
}

.feature-item h3 {
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
}

/* 响应式样式 */
@media (max-width: 768px) {
    .carousel-item {
        height: 250px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* 为不同的亮点区块添加不同的淡色系渐变背景色 */
.feature-item:nth-child(1) {
    background: linear-gradient(to bottom, #f8e9ff, #e6d3ff);
}

.feature-item:nth-child(2) {
    background: linear-gradient(to bottom, #e9f8ff, #d3e6ff);
}

.feature-item:nth-child(3) {
    background: linear-gradient(to bottom, #f8ffe9, #e6ffd3);
}

/* 提取 footer 样式 */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}

footer p {
    font-size: 14px;
    color: #999;
}

/* 统一轮播图和亮点介绍区域的最大宽度并居中 */
.carousel, .features {
    max-width: 1200px;
    margin: 0 auto;
}

/* 调整轮播图下方按钮的左右边距，确保在最大宽度下的位置正确 */
.carousel-control.prev {
    left: calc((100% - 1200px) / 2 + 10px);
}

.carousel-control.next {
    right: calc((100% - 1200px) / 2 + 10px);
}

/* 在小屏幕下，重置按钮的左右边距 */
@media (max-width: 1200px) {
    .carousel-control.prev {
        left: 10px;
    }

    .carousel-control.next {
        right: 10px;
    }
}

/* 新增 Logo 和导航栏样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    max-width: 1200px;
    margin: 0 auto;
    background: linear-gradient(to bottom, #fafafa, #f5f3f3);
    height: 55px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    width: 100%;
}

.about-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 10px;
}
.about-title {
    font-size: 22px;
    text-align: center;
    padding: 0 0 20px 0;
}
/**article content style**/
.about-content {
    line-height: 25px;
    word-wrap: break-word;
    position: relative;
}
.about-content .article_image {margin-bottom:15px;text-align:center;}
.about-content .article_image img {max-width:100%;height:auto;text-align:center;display:inline-block;}
.about-content .align_center {margin-bottom:15px;text-align:center;text-indent:0;}
.about-content p {line-height:25px;font-size:15px;}
.about-content h3,.about-content h4,.about-content h5{border-bottom:#eee 1px solid;padding-bottom:5px;margin:20px 0;color:#000;}
.about-content h1{font-size:18px;font-weight:normal;margin:20px -20px 20px -24px;padding:10px 20px 9px 20px;line-height:18px;border-left:3px solid #00a2ca;background-color:#fbfbfb;color:#333;}
.about-content h2{font-size:18px;font-weight:normal;margin:20px -20px 20px -24px;padding:10px 20px 9px 20px;line-height:18px;border-left:3px solid #00a2ca;background-color:#fbfbfb;color:#333;}
.about-content h3{font-size:16px}
.about-content h4{font-size:14px}
.about-content h5{font-size:12px}
.about-content ul{margin:0 0 16px 26px;font-size:15px;}
.about-content ol{margin:16px;font-size:15px;}
.about-content ul li{padding-left:20px;margin-bottom:10px;*list-style:disc;*padding-left:0;line-height:25px}
.about-content ol li{list-style:decimal;margin:0 0 10px 28px;line-height:25px}
.about-content pre{word-break:break-all;word-wrap:break-word}
.about-content table{border-top:solid 1px #ddd;border-left:solid 1px #ddd;width:100%;margin-bottom:16px}
.about-content table tr:hover {background-color:#f9f9f9;}
.about-content table th{background-color:#f7f7f7;text-align:center;font-weight:bold;}
.about-content table td,.about-content table th{border-bottom:solid 1px #ddd;border-right:solid 1px #ddd;padding:5px 10px}
.about-content .alignleft{float:left;text-align:left;margin-right:10px}
.about-content .aligncenter{margin: 0 auto;text-align: center;display: block;}
.about-content .alignright{float:right;text-align:right;margin-left:10px}
.about-content a{color:#00a2ca;}
.about-content a:hover{color:#000;text-decoration:underline}
.about-content code {padding:2px 4px;font-size:90%;color:#c7254e;background-color:#f9f2f4;border-radius:4px;margin:0 3px;}

/* 小屏幕下导航栏背景也修改为淡绿色 */
@media (max-width: 768px) {
    .nav ul {
        background-color: #fafafa;
    }
}

.logo {
    display: flex;
    align-items: center;
}
.logo img {
    /* 限制 logo 高度最大为导航栏高度，并保持宽高比 */
    max-height: 45px;
    width: auto;
}

.nav ul {
    list-style-type: none;
    display: flex;
    gap: 20px;
}

.nav ul li a {
    text-decoration: none;
    /* 修改文字颜色为纯黑色 */
    color: #333333;
    font-weight: bold;
}

.nav ul li a:hover {
    /* 鼠标悬停时文字颜色不变 */
    color: #333333;
    /* 鼠标悬停时添加下划线 */
    text-decoration: underline;
}

/* 新增汉堡菜单样式 */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #000000;
    margin: 3px 0;
    transition: 0.4s;
}

.contact {
    display: flex;
    margin: 0 auto;
    max-width: 1200px;
    padding: 65px 15px 15px 15px;
}

/* 小屏幕下显示汉堡菜单 */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
    }

    .nav ul.show {
        display: flex;
    }

    .nav ul li {
        text-align: center;
        padding: 15px 0;
        border-top: 1px solid #e9e2e2;
    }
}