/* 主菜单样式 */
.main-menu {
    position: relative;
    display: flex;
    align-items: center;
}

.main-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
}

.menu-item {
    position: relative;
    padding: 0 15px;
}

.menu-item > a {
    display: block;
    padding: 15px 0;
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.menu-item > a:hover,
.menu-item > a.active {
    color: #007bff;
}

/* 子菜单样式 */
.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 4px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;

}

.menu-item:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-menu li {
    list-style: none;
}

.sub-menu li a {
    display: block;
    padding: 8px 20px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.sub-menu li a:hover {
    background: #f8f9fa;
    color: #007bff;
    padding-left: 25px;
}

/* 添加下拉箭头指示器 */
.menu-item > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    vertical-align: middle;
    border-top: 4px solid;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
}

/* 头部布局样式 */
.header-bottom-left-wrap {
    display: flex;
    align-items: center;
    gap: 30px;
}

.main-logo {
    flex-shrink: 0;
}