/* 导航栏样式 */
.header-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  min-width: 1366px;
  height: 80px;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18.75%;
}

.logo-container {
  font-size: 24px;
  font-weight: bold;
  color: #333;
  display: flex;
  align-items: center;
}

.logo-img {
  width: 228px;
  height: 50px;
  margin-right: 10px;
}

.nav-container {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-item {
  font-size: 16px;
  color: #333;
  text-decoration: none;
  padding: 10px 0;
  position: relative;
  transition: color 0.3s;
  margin-left: 40px;
}

.nav-item.active {
  color: #ff8a19;
}

.nav-item.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: #ff8a19;
}

.nav-item:hover {
  color: #ff8a19;
}

/* 主要内容区域 */
.main-container {
  margin-top: 80px;
  min-height: calc(100vh - 180px);
}

/* 通栏banner */
.banner-container {
  position: relative;
  width: 100%;
  min-width: 1366px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 48px;
  font-weight: bold;
}
.banner-bg {
  width: 100%;
  height: auto;
}
.banner-main {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  justify-content: space-around;
  font-size: 12px;
  color: #333;
  width: 100%;
  height: 100%;
  min-width: 1366px;
  padding: 0 18.75%;
}

.banner-content {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.banner-title,
.banner-text {
  font-size: 52px;
  white-space: nowrap;
}
.banner-text {
  padding-left: 120px;
}
.banner-desc {
  font-size: 16px;
  width: 450px;
  position: relative;
  padding-top: 20px;
  padding-bottom: 50px;
  line-height: 1.6; /* 添加行高，1.6倍字体大小 */
}
.banner-image {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}
.banner-img {
  height: 75%;
}
.download-btns {
  display: flex;
  align-items: center;
}
.download-btn {
  width: 215px;
  height: 60px;
  margin-right: 20px;
  cursor: pointer;
  transition: opacity 0.3s;
}
.download-btn:last-child {
  margin-right: 0;
}
.download-btn:hover {
  opacity: 0.7;
}
/* swiper轮播图 */
.swiper-container {
  width: 100%;
  min-width: 1366px;
  padding: 80px 0;
  background: #fff;
}
.swiper-title {
  font-size: 36px;
  color: #333;
  text-align: center;
  margin-bottom: 80px;
}

.swiper-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  min-width: 1366px;
  height: 100%;
}
.swiper-slide {
  padding: 0 8px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.swiper-slide img {
  height: 100%;
}

/* 内容区块 */

.content-container {
  position: relative;
  width: 100%;
}
.content-section {
  position: relative;
  min-height: 400px;
  min-width: 1366px;
  padding: 100px 18.75%;
  display: flex;
  justify-content: space-between;
  background: #f6f9ff;
}

.content-header {
  position: relative;
  background: #f6f9ff;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: #333333;
  padding-top: 80px;
}
.content-box {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-width: 1366px;
  width: 100%;
}
.content-image {
  position: relative;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
.content-aside {
  display: flex;
  flex-direction: column;
}

.content-title {
  position: relative;
  display: inline-flex;
  font-size: 50px;
  color: #333;
  margin-bottom: 30px;
}
.content-title-number {
  position: absolute;
  top: -63px;
  left: 0;
  font-weight: 800;
  font-size: 66px;
  color: #ffeede;
}
.content-title-text {
  position: relative;
}
.content-desc {
  position: relative;
  width: 530px;
  font-size: 22px;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.6;
}
.content-desc-1 {
  width: 840px;
}
.content-aside-list {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.content-aside-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 252px;
  height: 224px;
  margin-bottom: 30px;
  background-color: #fff;
  border-radius: 10px;
}
.content-icon {
  position: relative;
  width: 76px;
  height: 76px;
}
.content-item-title {
  position: relative;
  font-size: 24px;
  color: #333;
}
.content-img {
  max-height: 480px;
}

.content-section-reverse {
  background: #fff;
}
.content-section-reverse .content-box {
  flex-direction: row-reverse;
}
.content-section-reverse .content-image {
  justify-content: flex-start;
}
.content-section-reverse .content-aside {
  align-items: flex-end;
}

.content-section-reverse .content-desc {
  max-width: 510px;
}
.content-section-reverse .content-title-number {
  left: auto;
  right: 0;
}

/* 下载区块 */
.download-container {
  position: relative;
  width: 100%;
}
.download-bg {
  position: relative;
  width: 100%;
}
.download-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-width: 1366px;
  padding: 100px 18.75%;
}
.download-title {
  font-weight: bold;
  font-size: 52px;
  color: #ffffff;
  margin-bottom: 24px;
}
.download-desc {
  font-weight: 400;
  font-size: 22px;
  color: #ffffff;
  margin-bottom: 70px;
}
/* 联系我们 */
.contact-container {
  position: relative;
  width: 100%;
}
.contact-content {
  width: 1336px;
  margin: 100px auto;
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.contact-list {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
  background-color: #fff;
  border-radius: 10px;
}
.contact-icon {
  position: relative;
  width: 220px;
  height: 220px;
}
.contact-name {
  position: relative;
  font-size: 24px;
  color: #333;
}

/* 底部样式 */
.footer-container {
  background: #000;
  padding: 50px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}
.copyright {
  color: rgba(255, 255, 255, 0.75);
}
.copyright:hover {
  color: rgba(255, 255, 255, 1);
}


/* 导航栏样式 - 有子菜单的项 */
.nav-item.has-submenu {
  position: relative;
  display: inline-block;
}

.nav-item.has-submenu a {
  display: flex;
  align-items: center;
}

.nav-item.has-submenu .arrow {
  margin-left: 5px;
  font-size: 12px;
  transition: transform 0.3s;
}

.nav-item.has-submenu:hover .arrow {
  transform: rotate(180deg);
}

/* 下拉菜单样式 */
.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 8px 0;
  margin-top: 5px;
  list-style: none;
  z-index: 1001;
  animation: fadeInDown 0.3s ease;
}

.submenu::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 20px;
  width: 10px;
  height: 10px;
  background: #fff;
  transform: rotate(45deg);
  box-shadow: -2px -2px 5px rgba(0, 0, 0, 0.05);
}

.submenu li {
  margin: 0;
}

.submenu li a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: #333;
  text-decoration: none;
  transition: all 0.3s;
  margin-left: 0;
  white-space: nowrap;
}

.submenu li a:hover {
  background: #f8f8f8;
  color: #ff8a19;
}

/* 动画效果 */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 调整原有导航项间距 */
.nav-item {
  margin-left: 40px;
  position: relative;
}

/* 确保下拉菜单不被其他元素遮挡 */
.header-container {
  z-index: 1000;
}
.submenu {
  z-index: 1001;
}