.bokai_head {
  /* 导航间距 - 可调整 */
  --bokai-nav-gap: 2.5rem;
  font-family: var(--font-family);
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  /* background: #fff; */
  transition: all 0.3s ease;
  /* box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08); */
}

.bokai-navbar > .container {
  padding: 0 5rem;
}

/* 滚动后的固定导航样式 */
.bokai_head.scrolled {
}

.bokai-navbar {
  transition: padding 0.3s ease;
  height: var(--header-height);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 999;
  background: #fff;
  opacity: 0;
  visibility: hidden;
}

/* 入场动画 - JS 控制添加 class 触发 */
.bokai-navbar.bokai-navbar-enter {
  animation: bokai-head-slide-down 0.6s ease-out forwards;
}

@keyframes bokai-head-slide-down {
  from {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
  }
  to {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

.bokai_head.scrolled .bokai-navbar {
}

.bokai-navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* ==========================================
   Logo 样式
   ========================================== */

.bokai-logo-container {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.bokai-logo-link {
  display: flex;
  align-items: center;
  transition: opacity 0.3s ease;
}

.bokai-logo-link:hover {
  opacity: 0.85;
}

.bokai-logo-icon {
  display: flex;
  align-items: center;
}

.bokai-logo-icon .bokai-logo-vector {
  width: 14.0625rem;
  height: auto;
  max-height: 4.25rem;
  object-fit: contain;
}

/* ==========================================
   导航菜单 - 桌面端
   ========================================== */

.bokai-nav-menu {
  display: flex;
  align-items: center;
  gap: var(--bokai-nav-gap, 2.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}

.bokai-nav-item {
  position: relative;
  padding: 1.25rem 0; /* 20px */
  height: 100%;
}

.bokai-nav-link {
  color: var(--text-color-second) !important;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-xl);
  font-family: var(--font-family);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.3s ease;
  white-space: nowrap;
  /* padding: 0.625rem 10px; */
  text-transform: capitalize;
  line-height: 150%;
}

.bokai-nav-item:hover .bokai-nav-link,
.bokai-nav-item.active .bokai-nav-link {
  color: var(--color-primary) !important;
}

/* 下拉箭头图标 */
.bokai-nav-link .iconfont {
  font-size: max(12px, 0.75rem);
  transition: transform 0.3s ease;
}

.bokai-nav-item.has-dropdown:hover .bokai-nav-link .iconfont {
  transform: rotate(180deg);
}

/* ==========================================
   下拉菜单
   ========================================== */

.bokai-dropdown-menu {
  /* position: absolute; */
  position: fixed;
  top: 100%;
  /* left: 50%; */
  left: 0px;
  width: 100vw;
  /* transform: translateX(-50%); */

  /* margin-top: 1.25rem; */
  /* background: rgba(255, 255, 255, 0.95); */
  background: #fff;
  /* backdrop-filter: blur(15px); */
  box-shadow: 0 0.625rem 1.875rem rgba(0, 0, 0, 0.15);
  min-width: 16.5rem;
  list-style: none;
  padding: 0.625rem 0;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 2rem var(--root-container-spacing);
}

.bokai-nav-item.has-dropdown:hover .bokai-dropdown-menu {
  opacity: 1;
  visibility: visible;
  /* margin-top: 0.625rem; */
}

.bokai-dropdown-item {
  /* border-bottom: 1px solid rgba(0, 0, 0, 0.06); */
}

.bokai-dropdown-item:last-child {
  border-bottom: none;
}

.bokai-dropdown-link {
  display: block;
  padding: 0.875rem 1.5625rem; /* 14px 25px */
  color: var(--text-color-second);
  font-size: var(--font-size-md);
  font-weight: 400;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  text-transform: capitalize;
  word-break: break-all;
}

.bokai-dropdown-link:hover {
  /* color: var(--color-primary); */
  color: #1e3f2a;
  /* padding-left: 1.5625rem; */
  /* background: rgba(0, 35, 187, 0.05); */
}

/* 第三层菜单样式 */
.bokai-dropdown-item.has-third-menu {
  position: relative;
}

.bokai-dropdown-item.has-third-menu a {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bokai-dropdown-link .iconfont {
  font-size: max(10px, 0.625rem);
  margin-left: auto;
  transition: transform 0.3s ease;
}

.bokai-dropdown-item.has-third-menu:hover .bokai-dropdown-link .iconfont,
.bokai-dropdown-item.has-third-menu:hover .bokai-dropdown-link svg {
  transform: rotate(-90deg);
}

.bokai-dropdown-item.has-third-menu svg {
  transform: scale(0.8);
  transform-origin: center;
  flex-shrink: 0;
}

.bokai-third-menu {
  position: absolute;
  left: 100%;
  top: 0;
  margin-left: 0.25rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(15px);
  box-shadow: 0 0.625rem 1.875rem rgba(0, 0, 0, 0.15);
  min-width: 16.5rem;
  list-style: none;
  padding: 0.625rem 0;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 101;
}

.bokai-dropdown-item.has-third-menu:hover .bokai-third-menu {
  opacity: 1;
  visibility: visible;
}

.bokai-dropdown-item.active .bokai-dropdown-link {
  color: var(--text-color) !important;
}

.bokai-third-item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.bokai-third-item.active a {
  color: var(--text-color);
}

.bokai-third-item:last-child {
  border-bottom: none;
}

.bokai-third-link {
  display: block;
  padding: 0.875rem 1.5625rem; /* 14px 25px */
  color: var(--text-color-second);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-lg);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  text-transform: capitalize;
}

.bokai-third-link:hover {
  color: var(--color-primary);
  /* padding-left: 1.5625rem; */
  /* background: rgba(0, 35, 187, 0.05); */
}

/* Product 导航特殊遮罩层 */
.bokai-product-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.bokai-nav-item.is-product-nav:hover ~ .bokai-product-overlay {
  display: block;
  opacity: 1;
}

/* ==========================================
   右侧工具栏
   ========================================== */

.bokai-navbar-tools {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.bokai-navbar-tools .em-quearys-inner {
  height: 100vh;
  transform: none;
}

/* 询盘按钮 */
.bokai-inquiry-btn {
}

.bokai-language-selector,
.bokai-search-box {
  display: flex;
  align-items: center;
}

.bokai-search-box img {
  width: 24px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}

.bokai-search-box .em-header-quearys .em-quearys-menu {
  padding: 0.625rem 1.25rem;
  border-radius: 99px;
  background-color: #f8f8f8;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 8rem;
  position: relative;
  cursor: pointer;
}

.bokai-search-box .em-header-quearys .em-quearys-menu .qico.qico-search3 {
  color: var(--text-color-second);
  /* font-size: 1.5rem; */
  position: absolute;
  opacity: 0;
  z-index: 10;
}

/* 语言选择器样式调整 */

.bokai-language-selector .lang-selector .current-lang img {
  object-fit: contain;
}
.bokai-language-selector .lang-selector .current-lang {
  color: var(--text-color-second);
}

.bokai-language-selector .lang-selector .current-lang em {
  color: var(--text-color) !important;
  font-size: var(--font-size-sm) !important;
  font-weight: var(--font-weight-base) !important;
}

.bokai-language-selector .iconfont {
  color: var(--text-color-second) !important;
}

/* ==========================================
   移动端菜单按钮
   ========================================== */

.bokai-mobile-header {
  display: none;
}

.bokai-mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 24px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

.bokai-mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  /* background: var(--text-color-second); */
  background-color: rgba(30, 63, 42, 1);
  transition: all 0.3s ease;
  transform-origin: center;
  position: relative;
}

/* 汉堡菜单激活时 - 变成关闭按钮 */
.bokai-mobile-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.bokai-mobile-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.bokai-mobile-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================
   移动端导航菜单
   ========================================== */

.bokai-mobile-nav {
  position: fixed;
  top: -100%;
  left: 0;
  width: 100%;
  height: max-content;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 888;
  overflow-y: auto;
  transition: top 0.4s ease;
  padding-top: var(--header-height);
  box-shadow: 0 4px 10px -6px rgba(0, 0, 0, 0.3);
  animation: none;
}

.bokai-mobile-nav-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5625rem;
  color: var(--text-color);
  cursor: pointer;
  font-size: 1.5rem;
}

.bokai-mobile-nav.active {
  top: 0;
}

.bokai-mobile-menu {
  list-style: none;
  margin: 0;
  padding: 10px 20px;
}

.bokai-mobile-menu-item {
  border-bottom: 1px solid rgba(51, 51, 51, 0.08);
}

.bokai-mobile-menu-item:nth-last-of-type(1) {
  border: none;
}

.bokai-mobile-menu-link-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bokai-mobile-menu-link {
  flex: 1;
  /* padding: 1rem 1.5625rem;  */
  padding: 10px 20px;
  padding-left: 0px;
  /* color: var(--text-color-second-light); */
  color: #9b9b9b;
  /* font-size: var(--font-size-md); */
  font-size: 24px;
  /* font-weight: var(--font-weight-base); */
  font-weight: 700;
  text-decoration: none;
  display: block;
  transition: all 0.3s ease;
  text-transform: capitalize;
}

.bokai-mobile-menu-item.active .bokai-mobile-menu-link {
  /* color: var(--color-second) !important; */
  color: var(--color-primary);
  /* font-weight: var(--font-weight-md); */
}

/* 移动端子菜单激活样式 */
.bokai-mobile-submenu > li.active .bokai-mobile-submenu-link {
  color: var(--text-color);
}

.bokai-mobile-third-submenu li.active .bokai-mobile-third-submenu-link {
  color: var(--text-color);
}

/* 移动端第三层菜单激活时展开 */
.bokai-mobile-submenu > li.third-submenu-open .bokai-mobile-third-submenu {
  max-height: 31.25rem;
}
/* 
.bokai-mobile-submenu
  > li.third-submenu-open
  .bokai-third-submenu-toggle
  .iconfont {
  transform: rotate(180deg);
} */

.bokai-mobile-submenu > li.active .bokai-third-submenu-toggle .iconfont {
  color: var(--text-color);
}

.bokai-mobile-menu-link:hover {
  color: var(--color-primary) !important;
  background: rgba(0, 35, 187, 0.05);
}

/* 移动端子菜单切换按钮 */
.bokai-submenu-toggle {
  width: 3.125rem;
  height: 3.125rem;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  /* color: var(--text-color-second); */

  transition: all 0.3s ease;
}

.bokai-submenu-toggle .iconfont {
  font-size: 20px;
  /* color: var(--text-color-second-light); */
  color: #9b9b9b;
  transition: transform 0.3s ease;
}

.bokai-mobile-menu-item.submenu-open .bokai-submenu-toggle .iconfont {
  transform: rotate(180deg);
}

.bokai-mobile-menu-item.submenu-open.active .bokai-submenu-toggle .iconfont {
  color: var(--color-primary);
}

/* 移动端子菜单 */
.bokai-mobile-submenu {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: max-height 0.4s ease;
}

.bokai-mobile-menu-item.submenu-open .bokai-mobile-submenu {
  max-height: 31.25rem;
}

.bokai-mobile-submenu-link {
  display: block;
  padding: 0px 20px;
  /* color: var(--text-color-second-light); */
  /* font-size: var(--font-size-md); */
  color: #9b9b9b;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  padding-left: 0px;
}

.bokai-mobile-submenu li:nth-last-child(1) {
  padding-bottom: 10px;
}

.bokai-mobile-submenu-link:hover {
  color: var(--text-color) !important;
}

/* 移动端第三层菜单样式 */
.bokai-mobile-submenu-link-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bokai-mobile-submenu-link {
  flex: 1;
}

.bokai-third-submenu-toggle {
  /* width: 3.125rem; */
  /* height: 3.125rem; */
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color-second);
  transition: all 0.3s ease;
}

.bokai-third-submenu-toggle .iconfont {
  font-size: max(12px, 0.875rem);
  color: var(--text-color-second);
  transition: transform 0.3s ease;
}

.bokai-mobile-submenu
  > li.has-third-submenu.third-submenu-open
  .bokai-third-submenu-toggle
  .iconfont {
  transform: rotate(180deg);
}

.bokai-mobile-third-submenu {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: max-height 0.4s ease;
}

.bokai-mobile-third-submenu li:nth-last-child(1) {
  padding-bottom: 10px;
}

.bokai-mobile-submenu
  > li.has-third-submenu.third-submenu-open
  .bokai-mobile-third-submenu {
  max-height: 31.25rem;
}

.bokai-mobile-third-submenu-link {
  display: block;
  padding: 0px 10px; /* 14px 25px */
  color: var(--text-color-second);
  /* font-size: var(--font-size-md); */
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

.bokai-mobile-third-submenu-link:hover {
  color: var(--color-second) !important;
}

/* 移动端遮罩层 */
/* .bokai-mobile-nav::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
} */

.bokai-mobile-nav.active::before {
  opacity: 1;
  pointer-events: all;
}

/* ==========================================
   响应式设计
   ========================================== */

/* 平板和以下 */
@media (max-width: 1024px) {
  .bokai-navbar > .container {
    padding: 0 2rem;
  }

  .bokai-logo-container {
    flex: 1;
  }

  .bokai-search-box .em-header-quearys .em-quearys-menu {
    width: auto;
    background: transparent;
    padding: 0px;
  }

  /* 隐藏桌面端导航菜单 */
  .bokai-nav-menu {
    display: none;
  }

  /* 显示移动端菜单按钮 */
  .bokai-mobile-header {
    display: flex;
    align-items: center;
    margin-left: 0.875rem; /* 14px */
  }

  .bokai-navbar-tools {
    gap: 0px;
  }
}

/* 手机端 */
@media (max-width: 768px) {
}

/* 小屏手机 */
@media (max-width: 576px) {
  .bokai-logo-icon .bokai-logo-vector {
    width: 10rem;
  }

  .bokai_head .bokai-inquiry-btn {
    display: none;
  }
}