/* 顶部导航栏样式 */
.header {
    background-color: #2b2f36;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    /*background: url("../img/982401352937125536.png") 0 0 / 100% 49px no-repeat #202329;*/
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    height: 60px;
    display: flex;
    align-items: center;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    position: absolute;
    left: 0;
}

.logo img {
    height: 50px;
    margin-right: 5px;
    margin-top: -5px;
}

.logo span {
    font-size: 26px;
    color: #ffffff;
}

.main-navs {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.main-nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 0;
    position: relative;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    opacity: 1;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #00b38a;
}

.user-actions {
    line-height: 1.2;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    text-align: center;
}

.btn-post {
    background-color: #00b38a;
    color: #fff;
    padding: 10px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s ease;
}

.btn-login {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.btn-login:hover {
    opacity: 1;
}

/* 左侧导航栏样式 */
.left-nav {
    width: 200px;
    flex-shrink: 0;
    border-radius: 12px;
    max-height: calc(100vh - 80px);
    overflow: hidden;
}

#left_nav {
    height: calc(100% - 66px);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    background-color: #fff;
    border-radius: 4px;
    overflow-y: auto;
    min-height: 500px;
}
.container .information_left_nav{
    height: calc(100%);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    background-color: #fff;
    border-radius: 4px;
    overflow-y: auto;
    min-height: 500px;
}
.left-nav .first-title .title {
    height: 44px;
    line-height: 44px;
    font-size: 14px;
    font-weight: 600;
    color: #222;
    background: linear-gradient(90deg, #f5fcfc, #fcfbfa);
    padding: 0 24px;
}

.nav-item {
    font-size: 14px;
    color: #666;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.nav-item .title {
    padding: 12px 24px;
}

.left-nav .nav-item .title .after {
    content: '▼';
    font-size: 12px;
    transition: transform 0.2s ease;
    position: absolute;
    right: 10px;
    top: 10px;
    display: block;
}

.left-nav > .nav-item.expanded .title .after {
    transform: rotate(-90deg);
}

.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.expanded .nav-submenu {
    max-height: 500px;
}

.nav-submenu .nav-item {
    padding-left: 40px;
    font-size: 13px;
}

.nav-submenu .nav-item .after {
    content: none;
}

.nav-item .title:hover {
    color: #00b38a;
}

.nav-item2 {
    padding: 0 24px;
}

.nav-item2:hover {
    color: #00b38a;
    background-color: #f7f9fa;
}

.nav-item2.active {
    color: #00b38a;
    background-color: #f7f9fa;
    font-weight: 500;
}

.left-nav .expanded .title {
    color: #00b38a;
    background-color: #f7f9fa;
    font-weight: 500;
}

.Expand {
    display: none;
}

.mobile-filter {
    display: none;
}

.nav-item2 {
    line-height: 40px;
}