/* 确保html和body有100%高度 */
html, body {
    margin: 0;
    padding: 0;
}

/* header和footer的移动样式 */
.zwfw_header_top {
    position: relative;
    z-index: 3;
    transition: transform 0.1s ease; /* 添加平滑过渡效果 */
}

.zwfw_footer_bottom {
    position: relative;
    z-index: 3;
    transition: transform 0.1s ease; /* 添加平滑过渡效果 */
    margin-top: -170px;
}

.iframe_container {
    position: relative;
    top: -156px;
    z-index: 1;
    width: 100%;
}
.fw_top{
    position: relative;
    z-index: 2;
}
/* 导航样式修改 */
.hNavBox {
    width: 100%;
    background: #ffffff;
    padding: 0 20px;
    box-sizing: border-box;
    position: relative;
    z-index: 2;
}

#nav {
    list-style: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
    margin-left: -478px;
}

#nav li {
    float: left;
    position: relative;
    margin-right: 20px;
}

#nav li a {
    display: block;
    padding: 15px 10px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

/* 底部蓝条效果 */
#nav li::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: #0B7CCB;
    transition: width 0.3s ease;
}

#nav li:hover::after {
    width: 100%;
}

#nav li.actives::after {
    width: 100%;
}

#nav li.actives a {
    color: #0B7CCB;
}

#nav li:hover a {
    color: #0B7CCB;
}