.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: block;
    visibility: hidden;
    opacity: 0;
    position: absolute;
    background-color: #000000;
    min-width: 320px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    z-index: 9999;
    top: 100%;
    left: 0;
    border-radius: 4px;
    padding: 8px 0;
    transform: translateY(-20px) scale(0.95);
    transition: opacity 0.35s cubic-bezier(0.32,0.72,0,1), 
                transform 0.35s cubic-bezier(0.32,0.72,0,1), 
                visibility 0.35s;
}

.dropdown-content a {
    color: #ffffff;
    padding: 12px 20px;
    text-decoration: none;
    display: block;
    font-size: 14px;
    transition: background-color 0.2s, padding-left 0.2s;
}

.dropdown-content a:hover {
    background-color: #333333;
    padding-left: 25px;
}

/* 桌面版：hover 显示下拉菜单 */
.dropdown:hover .dropdown-content {
    visibility: visible;
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* 手机版：点击切换下拉菜单 */
@media screen and (max-width: 1000px) {
    .dropdown {
        position: relative;
    }
    
    .dropdown-content {
        position: static;
        visibility: hidden;
        opacity: 0;
        max-height: 0;
        overflow: hidden;
        padding: 0;
        margin: 0;
        box-shadow: none;
        background-color: rgba(0,0,0,0.3);
        transform: none;
        transition: all 0.3s ease;
    }
    
    .dropdown.open .dropdown-content {
        visibility: visible;
        opacity: 1;
        max-height: 300px;
        padding: 8px 0;
        overflow-y: auto;
    }
    
    .dropdown-content a {
        padding: 10px 20px 10px 40px;
        font-size: 13px;
    }
    
    .dropdown-content a:hover {
        padding-left: 45px;
    }
    
    /* 桌面 hover 在手机版禁用 */
    .dropdown:hover .dropdown-content {
        visibility: hidden;
        opacity: 0;
        max-height: 0;
        padding: 0;
    }
    
    .dropdown.open:hover .dropdown-content {
        visibility: visible;
        opacity: 1;
        max-height: 300px;
        padding: 8px 0;
    }
    
    /* 手机版菜单下拉样式 */
    .menu_item {
        position: relative;
    }
    
    .menu_item .dropdown-toggle {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
        cursor: pointer;
        transition: transform 0.3s ease;
        font-size: 12px;
        padding: 10px;
    }
    
    .menu_item.open .dropdown-toggle {
        transform: translateY(-50%) rotate(90deg);
    }
    
    .mobile-dropdown-content {
        display: none;
        padding-left: 20px;
        background-color: rgba(255, 255, 255, 0.05);
    }
    
    .menu_item.open .mobile-dropdown-content {
        display: block;
    }
    
    .mobile-dropdown-content a {
        display: block;
        padding: 12px 20px;
        color: #ffffff;
        text-decoration: none;
        font-size: 14px;
        transition: padding-left 0.2s, background-color 0.2s;
    }
    
    .mobile-dropdown-content a:hover {
        padding-left: 30px;
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* 电脑导航当前选中高亮：黄色 */

.default_nav_themes > a.active {
  color: #ff7a00 !important;
  font-weight: 600 !important;
}