.header-main {
  height: 88px;
  background-color: #000;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 9999;
}

.header {
  width: 100%;
  position: relative;
  top: 0;
  left: 0;
}

.main {
  width: 100%;
  background-color: #000;
}

.footer-main {
  width: 100%;
  height: 574px;
  background-color: #000;
}

/* header样式 */
header {
  width: 1280px;
  margin: 0 auto;
  height: 88px;
  background-color: #000000;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.navbar {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* logo样式 */
.navbar-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  width: 134px;
  height: 28px;
  cursor: pointer;
}

/* 导航菜单 */
.navbar-menu {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, max-content));
  column-gap: 16px;
  justify-content: center;
  align-items: center;
  width: 724px;
  height: 100%;
}

/* 菜单项 */
.menu-item {
  padding: 4px 16px;
  height: 100%;
  display: flex;
  align-items: center;
}

.menu-item:hover {
  /* 悬停样式 */
  cursor: pointer;
}

/* 菜单项标题 */
.menu-item-text {
  display: flex;
  align-items: center;
}

/* 菜单项上下箭头图标 */
.menu-item-icon {
  width: 16px;
  height: 14px;
  margin: 2px;
  background-image: url("../image/Frame.svg");
}

.menu-item:hover .menu-item-icon {
  background-image: url("../image/Frame1.svg");
}

/* 下拉框 */
.dropdown-menu {
  width: 362px;
  height: 0;
  overflow: hidden;
  border-radius: 10px;
  background-color: #333;
  font-size: 14px;
  position: absolute;
  top: 88px;
  transform: translateX(-32.5%);
  transition: height 0.3s ease-out;
  z-index: 9999;
}

.dropdown-menu-box {
  padding: 36px;
  cursor: default;
}

.dropdown-menu-aboutMenu,
.dropdown-menu-solutionMenu,
.dropdown-menu-technologyMenu {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.dropdown-menu-productMenu {
  width: 1280px;
  display: flex;
  flex-wrap: wrap;
  gap: 0 24px;
}

.menu-item:hover .dropdown-menu-aboutMenu {
  /* height: 210px; */
  height: 160px;
}

.menu-item:hover .dropdown-menu-solutionMenu {
  height: 268px;
}

.menu-item:hover .dropdown-menu-technologyMenu {
  height: 160px;
}

.menu-item:hover .dropdown-menu-productMenu {
  height: 438px;
}

.menu-item.close-dropdown .dropdown-menu {
  height: 0;
}

.product-dropdown-item {
  width: 370px;
  height: 122px;
  padding: 24px;
  display: flex;
  gap: 12px;
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.product-dropdown-item:hover {
  /* 产品项悬停效果 */
  background-color: rgba(255, 255, 255, 0.1);
  cursor: pointer;
}

.product-dropdown-item img {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.product-dropdown-item-title {
  font-size: 16px;
  margin-bottom: 4px;
}

.product-dropdown-item-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.dropdown-item {
  height: 22px;
}

.dropdown-item:hover {
  /* 产品项悬停效果 */
  cursor: pointer;
}

/* 联系按钮 */
.contact-btn {
  width: 136px;
  height: 48px;
  flex-shrink: 0;
}

/* footer样式 */
footer {
  width: 1280px;
  margin: 0 auto;
  height: 574px;
  background-color: #000;
  color: #fff;
}

.footer {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.footer-container {
  height: 326px;
  display: flex;
  justify-content: space-between;
}

.footer-column {
  width: 320px;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-column-title {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.43);
  height: 22px;
}

.footer-column div {
  height: 22px;
}

.footer-column li:hover {
  opacity: 1;
}

.footer-bottom {
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rect {
  width: 1px;
  height: 11.5px;
  background-color: #333;
}

.footer-links a {
  color: #fff;
  text-decoration: none;
}