/* 定义变量 */
:root {
  /* 主色调 */
  --color-primary: #071e85;
  --color-primary-light: #081e8c;
  --color-primary-dark: #010101;
  
  /* 次色调 */
  --color-secondary: #f3f6fa;
  --color-secondary-light: #ffffff;
  --color-secondary-dark: #e6e9f0;
  
  /* 文字颜色 */
  --color-text: #333333;
  --color-text-light: #7d91aa;
  --color-text-lighter: #a8b4c5;
  --color-text-white: #ffffff;
  
  /* 阴影 */
  --shadow-color: rgba(4, 13, 70, 0.1);
  --shadow-dark: rgba(4, 13, 70, 0.2);
  
  /* 间距 */
  --spacing-xs: 10px;
  --spacing-sm: 20px;
  --spacing-md: 30px;
  --spacing-lg: 60px;
  
  /* 过渡效果 */
  --transition: all 0.3s ease;
}

/* 性能优化 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 懒加载图片样式 */
.lazy-load {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lazy-load.loaded {
  opacity: 1;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .swiper {
      height: 500px;
  }
  
  .main-title h2 {
      font-size: 2rem;
  }
  
  .grid {
      grid-template-columns: repeat(2, 1fr);
  }
  
  .about-box {
      width: 100%;
      position: relative;
      top: -40px !important;
  }
}

@media (max-width: 768px) {
  .swiper {
      height: 300px;
  }
  
  .main-title h2 {
      font-size: 1.8rem;
  }
  
  .grid {
      grid-template-columns: 1fr;
  }
  
  .about-item {
      width: 100%;
  }
  
  .customize {
      padding: 0 var(--spacing-sm);
  }
  
  .team-swiper {
      height: 200px;
  }
}

@media (max-width: 480px) {
  .swiper {
      height: 200px;
  }
  
  .main-title h2 {
      font-size: 1.5rem;
  }
  
  .about-btn {
      width: 100%;
      text-align: center;
  }
  
  .culture-main {
      height: auto;
  }
}

/* 滚动动画 */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 为不同部分添加延迟 */
/* #ours-service .grid-item {
  transition-delay: 0.2s;
} */

#our-product .grid-product-item {
  transition-delay: 0.3s;
}

#about-us .about-item {
  transition-delay: 0.4s;
}

/* 加载状态 */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--color-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
      transform: rotate(360deg);
  }
}

/* 优化按钮悬停效果 */
.about-btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.about-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.about-btn:hover::before {
  left: 0;
}

/* 主要内容区域样式 */
/* 公告样式 */
.pt {
  padding: var(--spacing-lg) 0;
}

.bg1 {
  background-color: var(--color-secondary);
}

.bg2 {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}

.main-title {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.main-title h2 {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
  text-shadow: 0 2px 4px var(--shadow-color);
}

.main-title p {
  color: var(--color-text-light);
  font-size: 1.1rem;
}

/* swiper样式 */
.swiper {
  width: 100%;
  height: 300px;
  transition: height 0.3s ease;
}

.swiper-item {
  width: 100%;
  height: 100%;
  position: relative;
}

.swiper-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.swiper-title {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 100%;
}

.swiper-title h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-text-white);
}

.swiper-title p {
  font-size: 1.2rem;
  color: var(--color-text-white);
}

.swiper-button-prev:after,
.swiper-button-next:after {
  font-size: 24px;
  color: var(--color-text-white);
  text-align: center;
}

.swiper-pagination-bullet {
  background: var(--color-text-white);
}

.swiper-pagination-bullet-active {
  background: var(--color-text);
}

@media (min-width: 768px) {
  .swiper {
      height: 500px;
  }
}

@media (min-width: 1024px) {
  .swiper {
      height: 715px;
  }
}

/* 我们的服务 */
.grid {
  display: grid;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
}

.grid-item {
  background-color: var(--color-secondary-light);
  padding: var(--spacing-md);
  border-radius: 8px;
  transition: var(--transition);
  box-shadow: 0 2px 10px var(--shadow-color);
  border: 1px solid var(--color-secondary-dark);
}

.grid-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px var(--shadow-dark);
  background-color: var(--color-primary-light);
  color: var(--color-text-white);
}

.grid-item .inners {
  display: flex;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.grid-item:hover .inners {
  color: var(--color-text-white);
}

@media (min-width: 1024px) {
  .grid {
      grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .grid {
      grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .grid {
      grid-template-columns: 1fr;
  }
}

/* 我们的产品 */
.grid-product {
  display: grid;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
}

.grid-product-item {
  width: 100%;
  transition: var(--transition);
}

.grid-product-item:hover {
  transform: translateY(-5px);
}

.product-img {
  cursor: pointer;
  height: 250px;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
}

.product-img-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  background-color: rgba(3, 6, 18, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: var(--transition);
}

.product-img:hover .product-img-hover {
  opacity: 1;
}

.product-img-btn {
  background-color: var(--color-text-white);
  padding: 0px 25px;
  text-align: center;
  line-height: 40px;
  border-radius: 5px;
  max-width: 95%;
}

.product-title h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: var(--spacing-sm) 0 var(--spacing-xs);
  color: var(--color-primary);
}

.product-title p {
  color: var(--color-text-light);
}

@media (min-width: 768px) {
  .grid-product {
      grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-img {
      height: 260px;
  }
}

/* 关于我们 */
.about-us {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.about-bg {
  width: 100%;
  height: 184px;
}

.about-box {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  top: -240px;
  color: var(--color-text-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 4px 20px var(--shadow-dark);
}

.about-box h2 {
  font-size: 36px;
}

.about-en {
  line-height: 60px;
}

.about-l {
  height: 6px;
  width: 50px;
  background: var(--color-text-white);
  margin-bottom: 30px;
}

.about-btn {
  color: var(--color-text-white);
  background: #357abd;
  display: inline-block;
  padding: 0 30px;
  line-height: 40px;
  height: 40px;
  margin-top: 30px;
  cursor: pointer;
  border-radius: 5px;
}

.about-btn:hover {
  border: 1px solid var(--color-text);
  color: var(--color-text);
  background-color: var(--color-text-white);
}

.about-content {
  width: 100%;
}

.about-list {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
}

.about-item {
  width: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
}

.about-item img {
  width: 52px;
  height: 52px;
}

.about-item h3 {
  font-size: 30px;
  line-height: 70px;
  font-weight: 600;
  margin: 5px 0;
  text-align: center;
}

.about-item div {
  line-height: 27px;
}

@media (min-width: 1024px) {
  .about-bg {
      height: 200px;
  }
}

@media (min-width: 1200px) {
  .about-main {
      display: flex;
  }

  .about-content,
  .about-box {
      width: 365px;
  }

  .about-box {
      position: absolute;
  }

  .about-item {
      width: 25%;
  }
}

/* 自定义模块 */
.customize {
  padding: 0 50px;
  margin-bottom: 20px;
}

.customize-box1 {
  border: 3px solid #2d3666;
  padding: 5px;
}

.customize-box2 {
  width: 100%;
  border: 1px solid #2d3666;
  padding: 15px;
  text-align: center;
  color: inherit;
}

.customize-box2 p {
  font-size: 20px;
  line-height: 30px;
  margin: 10px;
}

.customize-box2 img {
  width: 100%;
  height: auto;
}

/* 我们的团队 */
.team-swiper {
  width: 100%;
  height: 260px;
  position: relative;
  overflow: hidden;
}

.team-swiper .swiper-wrapper {
  /* overflow: hidden; */
}

.team-swiper .swiper-slide {
  background-color: var(--color-text-white);
  color: var(--color-text);
  padding: 35px;
  border-radius: 5px;
}

.team-btn-next {
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  color: var(--color-text-white);
  cursor: pointer;
}

.team-btn-prev {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  color: var(--color-text-white);
  cursor: pointer;
}

.team-swiper .inner {
  display: flex;
  align-items: center;
  margin-bottom: 18px;
}

.team-swiper .inner img {
  width: 66px;
  height: 66px;
  object-fit: cover;
}

.team-swiper .inner h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 5px;
}

/* 我们的文化 */
.culture-col {
  height: 100%;
  padding: 0 15px;
}

.culture-main .inner {
  margin: 15px 0;
  border-radius: 5px;
  overflow: hidden;
  height: 100%;
}

.culture-main .inner img {
  width: 100%;
}

.culture-right {
  display: flex;
  flex-wrap: wrap;
}

.right-item {
  width: 100%;
  padding: 0 15px;
  overflow: hidden;
}

@media (min-width: 768px) {
  .culture-right .right-item {
      width: 50%;
  }
}

@media (min-width: 1024px) {
  .culture-main {
      height: 360px;
  }
}

/* 常见问题解答 */
.accordion-item {
  padding: 15px;
  background-color: var(--color-text-white);
  color: var(--color-text);
  border-radius: 5px;
  width: 100%;
  cursor: pointer;
  margin-bottom: 20px;
}

.accordion-head {
  display: flex;
  justify-content: space-between;
}

.accordion-svg {
  width: 20px;
  height: 20px;
}

.accordion-svg.collapsed {
  display: none;
}

.accordion-svg.expanded {
  display: block;
}

.question-svg {
  width: 20px;
  height: 20px;
}

.question-svg.collapsed {
  display: none;
}

.question-svg.expanded {
  display: block;
}

.accordion-box {
  padding-top: 12px;
}

.contact_left div {
  line-height: 27px;
}

.accordion-itemq {
  margin-bottom: 20px;
  padding: 15px;
  background-color: var(--color-secondary-light);
  color: var(--color-text);
  border-radius: 5px;
  width: 100%;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--color-secondary-dark);
}

.accordion-headerq {
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.accordion-itemq:hover {
  background-color: var(--color-primary);
  color: var(--color-text-white);
}

.accordion-contentq {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s ease-in-out, opacity 0.5s ease-in-out, padding 0.5s ease-in-out;
  padding: 0 15px;
}

.accordion-itemq.openq {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-text-white);
  box-shadow: 0 4px 15px var(--shadow-dark);
}

.accordion-contentq.openq {
  max-height: 500px;
  opacity: 1;
  padding: 15px;
  color: var(--color-text-white);
}

.collapsed {
  display: inline;
  transition: transform 0.3s ease;
}

.expanded {
  display: none;
  transition: transform 0.3s ease;
}

.accordion-itemq.openq .collapsed {
  transform: rotate(180deg);
}

.accordion-itemq.openq .expanded {
  display: inline;
  transform: rotate(180deg);
}

/* 底部模块 */
.footer {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-text-white);
}