* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style: none;
    text-decoration: none;
    font-family: "Microsoft Yahei", sans-serif;
}
/* 顶部紫色条 */
.top-purple-bar {
    height: 30px;
    background-color: #00586F;
    width: 100%;
}
/* 导航头部 */
.royal-header {
    background: #fff;
    position: relative;
    z-index: 999;
}
.royal-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}
.royal-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}
/* 移动端菜单按钮（默认隐藏） */
.royal-mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}
.royal-mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #00586F;
    border-radius: 2px;
}
/* 导航菜单 */
.royal-nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}
.royal-navmenu-item {
    position: relative;
    padding: 5px 0;
}
/* 移除所有a标签下划线 */
a {
    text-decoration: none !important;
}
.royal-navmenu-item > a {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    font-weight: 600;
}
/* 原生下拉箭头样式 */
.dropdown-arrow {
    font-size: 10px;
    line-height: 1;
    transition: transform 0.3s ease;
}
.royal-navmenu-item:hover .dropdown-arrow {
    transform: rotate(180deg);
}
/* 下拉菜单 */
.royal-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 200px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    padding: 10px 0;
    display: none;
    z-index: 9999;
}
.royal-dropdown-menu li {
    padding: 0 15px;
    margin: 0;
}
.royal-dropdown-menu li a {
    display: block;
    padding: 10px 15px;
    color: #333;
    font-size: 14px;
    border-radius: 4px;
    margin: 0 -15px;
    transition: all 0.3s ease;
    white-space: nowrap;
}
/* 二级菜单悬浮效果：淡紫背景+深紫文字 */
.royal-dropdown-menu li a:hover {
    color: #00586F !important;
    background-color: #99C3DC; /* 淡紫色背景 */
    padding-left: 20px;
}
.royal-has-dropdown:hover .royal-dropdown-menu {
    display: block;
}
/* 移动端适配 */
@media (max-width: 992px) {
    .royal-mobile-menu-toggle {
        display: flex;
    }
    .royal-nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px 0;
        gap: 15px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        display: none;
    }
    .royal-nav-menu.active {
        display: flex;
    }
    .royal-dropdown-menu {
        position: static;
        box-shadow: none;
        padding-left: 15px;
    }
}

.product-group__button{
    background-color: #00586F !important;
}
/* ===== 三级分类下拉菜单样式 ===== */
.royal-dropdown-menu > li.royal-has-sub-dropdown {
    position: relative;
}
.royal-dropdown-menu > li.royal-has-sub-dropdown > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.royal-sub-dropdown-menu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 160px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    list-style: none;
    padding: 0;
    margin: 0;
    border-radius: 4px;
    z-index: 1001;
}
.royal-has-sub-dropdown:hover > .royal-sub-dropdown-menu {
    display: block;
}
.royal-sub-dropdown-menu li a {
    display: block;
    padding: 10px 15px;
    color: #00586F;
    text-decoration: none;
    white-space: nowrap;
    font-size: 14px;
}
.royal-sub-dropdown-menu li a:hover {
    background-color: #99C3DC;
    color: #00586F;
}
.royal-sub-dropdown-menu li:hover {
    background-color: #99C3DC;
}