.yuedong_head {
    position: sticky;
    z-index: 9999;
    width: 100%;
    background: #fff;
    font-family: var(--source-font-family);
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.yuedong-head-menu.fixed-top {
    background: #fff;
    animation: slide-down 0.3s ease;
}

.head-info-inquiry:hover {
    color: #fff;
}

@keyframes slide-down {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(0);
    }
}

.yuedong_head .row {
    margin: 0;
    align-items: center;
}

.yuedong-head-menu.fixed-top {
    background: #fff;
    transition: all 0.3s ease;
}

.yuedong_head .navbar {
    padding: 0 !important;
}

.yuedong_head .navbar-box {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.7188rem;
}


/* Logo */
.yuedong_head .navbar-brand {
    padding: 0;
    margin-right: 0.625rem;
}

.yuedong_head .navbar-brand img {
    width: auto;
    max-height: 1.875rem;
    object-fit: cover;
}


/* Navbar */
.yuedong_head .navbar-collapse {
    flex: 1;
    flex-grow: 1 !important;
    justify-content: right;
}

html[lang="en"] .yuedong_head .navbar-collapse{
    flex: auto;
}

.yuedong_head .navbar-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 1.4375rem;
}

html[lang="en"] .yuedong_head .navbar-nav{
    width: fit-content;
}

.yuedong_head .nav-item {
    flex: 1;
    position: relative;
    min-width: 0;
}
html[lang="en"] .yuedong_head .nav-item{
    flex: auto;
}


.yuedong_head .nav-item .nav-link-text-wrap {
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    vertical-align: bottom;
}

.yuedong_head .nav-item .nav-link:not(.nav-link--marquee) .nav-link-text-wrap {
    white-space: nowrap;
    text-overflow: ellipsis;
}

.yuedong_head .nav-item .nav-link-text {
    display: inline-block;
    white-space: nowrap;
}

.yuedong_head .nav-item .nav-link--marquee .nav-link-marquee-inner {
    display: inline-flex;
    white-space: nowrap;
    will-change: transform;
    animation: yuedong-nav-marquee linear infinite;
}

.yuedong_head .nav-item .nav-link--marquee:hover .nav-link-marquee-inner {
    animation-play-state: paused;
}

@keyframes yuedong-nav-marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.yuedong_head .nav-item a {
    text-transform: capitalize;
    text-decoration: none;
    transition: all 0.6s ease 0s;
}

.yuedong_head .nav-item .nav-link.hasSubNav::before {
    color: #252525 !important;
    font-size: 0.375rem !important;
    font-weight: 600 !important;
    border: none !important;
    font-family: "iconfont" !important;
    content: "\e68d" !important;
    position: absolute !important;
    right: -0.5rem !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
}

.yuedong_head .nav-link.active,
.yuedong_head .show>.nav-link {
    color: var(--text-color);
}

.yuedong_head .dropdown-menu {
    position: static;
}

.yuedong_head .nav-item .dropdown-submenu {
    position: relative;
}

.yuedong_head .nav-item .dropdown-submenu .dropdown-menu::before {
    display: none;
}

.yuedong_head .nav-item .dropdown-submenu a::after {
    transform: rotate(-90deg);
    position: absolute;
    right: 0.4688rem;
    top: 0.4063rem;
    font-weight: 600;
    display: none;
}

.yuedong_head .nav-item .dropdown-submenu a:hover {
    background: transparent;
    color: #fff;
}

.yuedong_head .nav-item .dropdown-submenu .dropdown-menu {
    top: 120%;
    left: 100%;
    opacity: 0;
    display: none;
    visibility: hidden;
}

.yuedong_head .nav-item .dropdown-submenu:hover .dropdown-menu {
    top: 0;
    opacity: 1;
    display: block;
    visibility: visible;
}

.yuedong_head .nav-item.active .nav-link {
    color: var(--color-primary);
}


/* Menu、Search */
.yuedong_head .iconfont-down4:before {
    content: "\e64f" !important;
    color: #252525;
}

.yuedong_head .iconfont-down2 {
    color: #252525 !important;
}

.yuedong_head .lang-selector {
    width: fit-content;
}

.lang-selector .current-lang em {
    color: #252525 !important;
    font-size: max(14px, 0.5625rem) !important;
    font-weight: 500 !important;
    line-height: 1.5 !important;
    display: none;
}

.lang-selector .current-lang i {
    font-size: max(14px, 0.5rem) !important;
    color: #000 !important;
}

.yuedong_head .lang-selector .current-lang {
    height: 1.125rem;
}

.head-search em {
    margin: 0;
    cursor: pointer;
    font-weight: 400;
    text-align: center;
    display: block;
}

.head-search em i {
    color: #252525;
    font-weight: bolder;
    font-size: max(14px, 0.5rem);
}

.head-search em i.qico-search3,
.serchbox .submit_btn i.qico-search3 {
    display: inline-block;
    width: 0.625rem;
    height: 0.625rem;
    position: relative;
    font-size: 0;
    vertical-align: middle;
}

.head-search em i.qico-search3::before,
.serchbox .submit_btn i.qico-search3::before {
    content: "" !important;
    position: absolute;
    width: 0.375rem;
    height: 0.375rem;
    left: 0;
    top: 0;
    border: 0.0625rem solid currentColor;
    border-radius: 50%;
}

.head-search em i.qico-search3::after,
.serchbox .submit_btn i.qico-search3::after {
    content: "";
    position: absolute;
    width: 0.25rem;
    height: 0.0625rem;
    right: 0;
    bottom: 0.0625rem;
    background: currentColor;
    transform: rotate(45deg);
    transform-origin: center;
    border-radius: 999px;
}

.head-search {
    margin: 0 0.625rem 0 0;
}

.yuedong_head .serchbox {
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    align-items: center;
    justify-content: center;
}

.yuedong_head .serchbox.active {
    display: flex;
}

.yuedong_head .serchbox form {
    width: 80%;
    max-width: 895px;
    margin: 0 auto;
    display: -webkit-flex;
    display: flex;
    -webkit-align-items: center;
    align-items: center;
    position: relative;
}

.yuedong_head .serchbox .submit_text {
    width: 100%;
    background: transparent;
    border-bottom: 0.0938rem solid #fff;
    font-size: 1.5625rem;
    font-weight: 500;
    height: 1.4;
    line-height: 1.4;
    color: #fff;
    padding: 0 1.25rem 0 0.5rem;
}

.yuedong_head .serchbox .submit_text::placeholder {
    color: #fff;
}

.yuedong_head .serchbox .submit_btn {
    position: absolute;
    right: 0.3125rem;
    top: 50%;
    background: transparent;
    transform: translateY(-50%);
    text-align: center;
    display: block;
    cursor: pointer;
}

.yuedong_head .serchbox .submit_btn i {
    font-size: max(16px, 1rem);
    color: #fff;
    line-height: 1.5625rem;
}

.yuedong_head .navbar-toggler:focus {
    outline: none;
    box-shadow: none;
}

.yuedong_head .navbar-toggler {
    display: none;
}

.head-info-inquiry {
    width: fit-content;
    color: #FFF;
    font-size: max(14px, 0.5625rem);
    font-weight: 500;
    line-height: normal;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-primary);
    border-radius: var(--button-radius);
    margin-left: 1.25rem;
}



@media all and (min-width: 992px) {
    .yuedong_head .navbar {
        height: 3.625rem;
    }

    .yuedong_head .nav-item .nav-link {
        position: relative;
        text-align: center;
        padding: 0;
        font-size: max(14px, 0.6875rem);
        font-weight: 500;
        color: #252525;
        line-height: normal;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .yuedong_head .nav-item .nav-link--marquee {
        text-overflow: clip;
    }

    html[lang="en"] .yuedong_head .nav-item .nav-link {
        max-width: none;
        white-space: nowrap;
        overflow: visible;
    }

    html[lang="en"] .yuedong_head .nav-item .nav-link .nav-link-text-wrap {
        max-width: min(12.5rem, 28vw);
    }

    html[lang="en"] .yuedong_head .nav-item .nav-link.nav-link--marquee {
        overflow: hidden;
    }



    .yuedong_head .nav-item .dropdown-menu {
        display: block;
        opacity: 0;
        visibility: hidden;
        transition: 0.3s;
        margin-top: 0;
        border: none;
        left: -1.125rem;
        width: 9.6875rem;
        background: #fff;
        box-shadow: 0 0.3125rem 0.625rem 0 rgba(0, 0, 0, 0.10);
        border-radius: 0;
    }

    .yuedong_head .nav-item .dropdown-menu li:last-child {
        margin-bottom: 0;
        border-bottom: none;
    }

    .yuedong_head .nav-item .dropdown-menu .dropdown-item {
        font-size: max(14px, 0.5625rem);
        font-weight: 500;
        color: #252525;
        position: relative;
        overflow: hidden;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        text-transform: uppercase;
        transition: all 0.3s ease-in-out;
        line-height: 2.5;
        padding: 0.125rem 1.5625rem 0.125rem 1.125rem;
    }

    .yuedong_head .nav-item .dropdown-menu .dropdown-item:hover {
        background: transparent;
        color: var(--color-primary);
    }

    .yuedong_head .nav-item .dropdown-menu .dropdown-item:hover::before {
        content: "\e609";
        font-family: "qico" !important;
        position: absolute;
        right: 0.9375rem;
        top: 50%;
        transform: translateY(-50%);
        color: var(--color-primary);
    }

    .yuedong_head .nav-item:hover .dropdown-menu {
        transition: 0.3s;
        opacity: 1;
        visibility: visible;
        top: 100%;
        transform: rotateX(0deg);
    }

    .yuedong_head .dropdown-menu.fade-down {
        top: 80%;
        transform: rotateX(-75deg);
        transform-origin: 0% 0%;
    }

    .yuedong_head .dropdown-menu.fade-up {
        top: 140%;
    }

    .yuedong_head .nav-item.active::after {
        position: absolute;
        content: "";
        bottom: -0.7813rem;
        left: 0;
        width: 100%;
        height: 0.1563rem;
        background: var(--color-primary);
    }
}

@media all and (max-width: 1630px) {

    .yuedong_head .navbar-box,
    .yuedong_head .navbar-nav {
        gap: 1rem;
    }

    .yuedong_head .navbar-brand img {
        max-height: 1.5rem;
    }


}

@media all and (max-width: 991px) {
    .yuedong_head .navbar {
        height: 2.5rem;
    }

    /* Logo */
    .yuedong_head .navbar-brand {
        margin: 0;
    }

    .yuedong_head .collapse .logo {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1rem 1.25rem;
        border-bottom: 1px solid #f0f0f0;
        background: #fff;
        position: sticky;
        top: 0;
        z-index: 10;
    }

    .yuedong_head .collapse .logo .qico {
        font-size: 1.25rem;
        cursor: pointer;
        color: #666;
        width: 2rem;
        height: 2rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: #f5f5f5;
        transition: all 0.2s ease;
    }

    .yuedong_head .collapse .logo .qico:hover {
        background: #e8e8e8;
        color: #333;
    }

    .navbar-brand img {
        width: auto;
        height: 1.75rem;
        object-fit: cover;
    }

    /* Navbar */
    .yuedong_head .navbar-nav {
        margin-left: 0;
        gap: 0;
        margin-top: 0;
        padding: 0.625rem 0;
    }

    .yuedong_head .nav-item {
        border-bottom: 1px solid #f8f8f8;
    }

    .yuedong_head .nav-item:last-child {
        border-bottom: none;
    }

    .yuedong_head .nav-item.active .nav-link {
        color: var(--color-primary);
        font-weight: 600;
        background: rgba(var(--color-primary-rgb, 37, 99, 235), 0.04);
    }

    .yuedong_head .nav-link.hasSubNav::after {
        width: 24px;
        height: 24px;
        vertical-align: baseline;
        font-family: "iconfont";
        content: "\e64c";
        font-weight: 600;
        border: none;
        font-size: 14px;
        position: absolute;
        right: 1.25rem;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        align-items: center;
        justify-content: center;
    }


    .yuedong_head .nav-item .dropdown-submenu a::after {
        transform: rotate(0);
        top: 0.375rem;
    }

    .yuedong_head .nav-item .dropdown-submenu a:hover {
        color: var(--color-primary);
    }

    .yuedong_head .nav-item .dropdown-submenu:hover .dropdown-menu {
        display: none;
    }

    .yuedong_head .nav-item .dropdown-submenu .dropdown-menu {
        opacity: unset;
        visibility: unset;
        margin: 0 0.5313rem;
        padding: 0 0.3125rem 0 0.625rem;
        border: none;
    }

    .yuedong_head .dropdown-menu {
        border-radius: 0;
        background: #fafafa;
    }

    .yuedong_head .dropdown-toggle::after {
        border-top: 0.25rem solid;
        border-right: 0.1875rem solid transparent;
        border-bottom: 0;
        border-left: 0.1875rem solid transparent;

    }

    .yuedong_head .navbar-collapse {
        width: 80vw;
        max-width: 320px;
        height: 100vh;
        height: 100dvh;
        position: fixed;
        top: 0;
        background: #fff;
        left: 0;
        z-index: 9999;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
        overflow-y: auto;
        border-radius: 0 16px 16px 0;
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
    }

    /* 折叠状态：彻底隐藏，避免首次点击闪烁 */
    .yuedong_head .navbar-collapse.collapse:not(.show):not(.collapsing) {
        display: none;
        visibility: hidden;
    }

    .yuedong_head .nav-item a {
        text-decoration: none;
        transition: all 0.2s ease;
        padding: 0.875rem 1.25rem !important;
        width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 0.9375rem;
        color: #333;
        font-weight: 400;
    }

    .yuedong_head .nav-item a:hover {
        color: var(--color-primary);
        background: rgba(var(--color-primary-rgb, 37, 99, 235), 0.04);
    }

    .yuedong_head .nav-item .nav-link--marquee {
        text-overflow: clip;
    }

    .yuedong_head .navbar-nav li {
        width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Menu、Search */
    .yuedong_head .iconfont-down2 {
        color: var(--title-text-color) !important;
    }

    .yuedong_head .navbar-toggler {
        display: block;
        padding: 0 !important;
        line-height: normal;
        font-size: 0 !important;
    }

    .yuedong_head .navbar-toggler i {
        color: #000;
    }

    .head-info-inquiry {
        margin: 0 0.625rem;
    }
}

/* 移动端菜单遮罩层 */
.yuedong-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}
.yuedong-menu-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}