/* 清除默认格式 */
* {
    margin: 0px;
    padding: 0px;
    list-style: none;
}
html{
    background-color: #F4F7EE;
}
/* 头部logo */
header {
    padding: 5px 0px;
    background-color: #FFFFFF;
}

.logo {
    float: left;
    height: 60px;
}

#heard_box {
    width: 1080px;
    margin: 0 auto;
    text-align: right;
}

#heard_right {
    font-size: 12px;
    color: #A6B7B1;
    line-height: 60px;
}

#heard_right span:nth-child(2) {
    padding: 0px 5px;
    border-left: 1px solid #B6C7BF;
    border-right: 1px solid #B6C7BF;
}

/* 导航栏 */
nav {
    width: 100%;
    background-color: #E2E9E4;
}

nav ul {
    width: 1080px;
    margin: 0 auto;
    height: 50px;
}

nav ul li {
    float: left;
    width: 130px;
    text-align: center;
}

nav ul li a {
    line-height: 50px;
    color: #696969;
    text-decoration: none;
}

nav ul li a:hover{
    color: #799A83;
}
/* 中间内容区域 */
main{
    width: 940px;
    padding: 10px;
    margin: 0 auto;
    margin-top: 10px;
    background-color: #FFFFFF;
}
h1{
    font-size: 24px;
    color: #94683f;
    text-align: center;
}
p{
    color: #363636;
}
h2{
    color: #94683f;
    text-align: left;
    font-size: 20px;
    border-left: 10px solid #94683f;
    padding-left: 10px;
    line-height: 20px;
    margin: 10px 0px;
}
footer{
    background-color: #E2E9E4;
    color: #696969;
    line-height: 60px;
    margin-top: 10px;
    text-align: center;
    font-size: 14px;
}

/* 导航当前页面高亮样式 */
nav a.active {
    color: #f00;
    font-weight: bold;
}

/* 图片预览样式 */
.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
    cursor: pointer;
}

.preview-image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}