body {
  font-family: 'Roboto-Light-10';
  overflow-x: hidden;
  color: var(--text-dark);
  line-height: 1.6;
}
:root {
  --primary-color: #004a98;
  --text-dark: #2d2a26;
  --text-light: #fff;
  --light-gray: #f1efec;
  --medium-gray: #adb5c1;
  --dark-gray: #625f5c;
  --error-color: #c33339;
  --success-color: #4CAF50;
  --transition-duration: 0.3s;
  --container-padding: 1rem;
  --section-padding: 2rem 0;
  --border-radius: 8px;
  --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
body {
  font-family: 'Roboto', sans-serif;
  overflow-x: hidden;
  color: var(--text-dark);
  line-height: 1.6;
}
/* 响应式图片 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}
/* 添加页面锚点偏移 */
[id]:target {
  scroll-margin-top: 120px;
}
/* 响应式基础样式*/
.container,
.navbar .container,
.elevator-nav .container,
.banner .content,
.topProject .project,
.business .bigBox,
.report .reportContain,
.video,
.initiatives .initiativesBox,
.projectsArea .projectsRoom,
.form .formArea,
.contact .contactArea,
.laberText .contain1,
.projectBox .projectContent {
  max-width: 1300px;
  width: 90%;
  margin: 0 auto;
  padding: var(--container-padding);
}
/* 导航栏区域 */
.navbar {
  background-color: rgba(0, 0, 0, 0.7);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  padding: 0 1rem;
  transition: transform 0.3s ease-in-out;
  /* 移动端汉堡导航栏 */
  /* 导航菜单栏 */
}
.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
  padding: 0;
}
.navbar .container .logo {
  height: 3.5rem;
  width: 120px;
}
.navbar .container .logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.navbar .mobile-menu-toggle {
  display: none;
  color: white;
  font-size: 1.8rem;
  cursor: pointer;
  z-index: 1001;
  transition: all 0.3s;
}
.navbar .mobile-menu-toggle:hover {
  color: #ff9800;
}
.navbar .nav-items {
  display: flex;
  list-style: none;
  transition: all var(--transition-duration);
  /* 下拉菜单样式 */
}
.navbar .nav-items .nav-item {
  position: relative;
  white-space: nowrap;
}
.navbar .nav-items .nav-item a {
  display: flex;
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  padding: 0.8rem;
  transition: all 0.3s;
  align-items: center;
}
.navbar .nav-items .nav-item a p {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0;
}
.navbar .nav-items .nav-item a p span {
  margin-left: 5px;
}
.navbar .nav-items .dropdown .dropdown-menu {
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  background-color: rgba(0, 0, 0, 0.9);
  min-width: 12.5rem;
  transition: all var(--transition-duration);
  list-style: none;
  padding: 0.5rem 0;
}
.navbar .nav-items .dropdown .dropdown-menu li {
  padding: 0.5rem 1rem;
}
.navbar .nav-items .dropdown .dropdown-menu a {
  text-decoration: none;
  color: white;
  position: relative;
  padding: 0.5rem 1rem;
  display: block;
  font-size: 0.9rem;
}
.navbar .nav-items .dropdown .dropdown-menu a:hover {
  color: white;
  font-weight: 500;
}
.navbar .nav-items .dropdown .dropdown-menu a:before {
  content: "";
  position: absolute;
  width: 90%;
  height: 2px;
  bottom: -0.3125rem;
  left: 0;
  background: currentColor;
  visibility: hidden;
  transform: scaleX(0);
  transition: all 0.3s ease-in-out 0s;
}
.navbar .nav-items .dropdown .dropdown-menu a:hover:before {
  visibility: visible;
  transform: scaleX(1);
}
.navbar .nav-items .dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  top: 100%;
}
.navbar.hidden {
  transform: translateY(-100%);
}
.elevator-nav.visible {
  top: 0;
}
/* Banner区域 */
.banner {
  height: 60vh;
  min-height: 600px;
  width: 100%;
  position: relative;
}
.banner .background-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  background: #004a98;
}
.banner .content {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  position: relative;
  z-index: 1;
  color: #fff;
  padding: 2rem;
}
.banner .content .top {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.banner .content .top div a {
  color: #fff;
  font-size: 1.2rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  position: relative;
}
.banner .content .top div:nth-child(1) a {
  position: relative;
  display: inline-block;
  text-decoration: none;
}
.banner .content .top div:nth-child(1) a span {
  margin-left: 0.9375rem;
}
.banner .content .top div:nth-child(1) a:hover {
  color: #fff;
}
.banner .content .top div:nth-child(1) a::before {
  content: "";
  position: absolute;
  width: 80%;
  /* 改为100%宽度 */
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: #fff;
  transform-origin: left center;
  /* 添加变换起点 */
  transform: scaleX(0);
  /* 初始状态 */
  transition: transform 0.3s ease-in-out;
}
.banner .content .top div:nth-child(1) a:hover:before {
  transform: scaleX(1);
  /* 结束状态 */
  transform-origin: left center;
  /* 可选反向动画 */
}
.banner .content .top div:nth-child(2) a {
  position: relative;
  display: inline-block;
  text-decoration: none;
}
.banner .content .top div:nth-child(2) a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 2px;
  /* 下划线高度 */
  background: #ffffff;
  /* 半透明下划线 */
  transform: scaleX(1);
  /* 控制下划线长度 (0-1) */
  transform-origin: center;
  transition: transform 0.3s ease;
}
.banner .content .bottom {
  margin-bottom: 7rem;
}
.banner .content .bottom h3 {
  font-size: clamp(2rem, 8vw, 5rem);
  font-weight: 400;
  line-height: 1.2;
}
.banner .content .pic {
  position: absolute;
  right: 0;
  bottom: -175px;
  height: 350px;
  width: 620px;
  border-radius: 0 0 100px 0;
}
.banner .content .pic img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  border-radius: 0 0 100px 0;
}
/* 文字内容样式优化 */
.topText,
.citationText,
.expertise,
.topProject,
.projects,
.newsroom {
  padding: 4rem 0;
}
.citationText,
.expertise,
.topProject,
.projects {
  background: var(--dark-bg);
  color: var(--light-text);
}
/* 标题板块 */
.laberText {
  min-width: 0 !important;
  height: auto;
  width: 100%;
  background-color: #f1efec;
}
.laberText .contain1 {
  display: flex;
  padding-top: 230px;
  justify-content: space-between;
}
.laberText .contain1 .text {
  height: 60px;
}
.laberText .contain1 .text h3 {
  color: #004a98;
  font-size: 16px;
  font-weight: 400px;
}
.laberText .contain1 .text p {
  color: #2d2a26;
  font-size: 26px;
}
/* 内容板块 */
.projectBox {
  height: auto;
  min-width: 0 !important;
  width: 100%;
  background-color: #f1efec;
}
.projectBox .projectContent {
  height: auto;
  padding: 80px 0;
}
.projectBox .projectContent P {
  height: auto;
  font-size: 22px;
  color: #625f5c;
  margin-bottom: 20px;
  font-weight: 600;
}
/* 联系区域 */
.contactArea {
  min-width: 0 !important;
  width: 100%;
  background-color: #f1efec;
  padding: 4rem 0;
}
.contactArea .container .contain2 {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
}
.contactArea .container .contain2 .left {
  flex: 1 1 50%;
  min-width: 300px;
}
.contactArea .container .contain2 .left p {
  color: var(--primary-color);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.contactArea .container .contain2 .left h3 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.2;
  color: #2d2a26;
  margin: 1.5rem 0;
}
.contactArea .container .contain2 .left a {
  display: inline-block;
  position: relative;
  text-decoration: none;
  color: var(--primary-color);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 600;
}
.contactArea .container .contain2 .left a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--primary-color);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 0.3s ease-in-out;
}
.contactArea .container .contain2 .left a:hover::after {
  transform: scaleX(1);
}
.contactArea .container .contain2 .right {
  flex: 1 1 40%;
  min-width: 300px;
  height: 400px;
}
.contactArea .container .contain2 .right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}
/* 底部区 */
footer {
  background-color: #2d2a26;
}
footer .container .logoArea {
  max-width: 10rem;
  height: 120px;
  width: 160px;
  margin-bottom: 1.25rem;
}
footer .container .logoArea a img {
  height: 100%;
  width: 100%;
  object-fit: cover;
}
footer .container .bottomNav {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 4rem;
}
footer .container .bottomNav .list {
  flex: 1;
  min-width: 200px;
}
footer .container .bottomNav .list h2 {
  height: 52px;
  width: 180px;
  font-size: 19px;
  color: #fff;
  font-weight: 400;
  margin-bottom: 24px;
}
footer .container .bottomNav .list h2 a {
  color: #fff;
  position: relative;
  /* 确保伪元素定位基准 */
  display: inline-block;
  /* 保持下划线宽度正确 */
  text-decoration: none;
}
footer .container .bottomNav .list h2 a::before {
  content: "";
  position: absolute;
  width: 100%;
  /* 改为100%宽度 */
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: #fff;
  transform-origin: center;
  /* 添加变换起点 */
  transform: scaleX(0);
  /* 初始状态 */
  transition: transform 0.3s ease-in-out;
}
footer .container .bottomNav .list h2 a:hover::before {
  transform: scaleX(1);
  /* 结束状态 */
  transform-origin: center;
  /* 可选反向动画 */
}
footer .container .bottomNav .list ul li {
  margin-bottom: 15px;
}
footer .container .bottomNav .list ul li a {
  color: #e8e5df;
  font-size: 14px;
  font-weight: 400;
  position: relative;
  /* 确保伪元素定位基准 */
  display: inline-block;
  /* 保持下划线宽度正确 */
  text-decoration: none;
}
footer .container .bottomNav .list ul li a::before {
  content: "";
  position: absolute;
  width: 100%;
  /* 改为100%宽度 */
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: #e8e5df;
  transform-origin: center;
  /* 添加变换起点 */
  transform: scaleX(0);
  /* 初始状态 */
  transition: transform 0.3s ease-in-out;
}
footer .container .bottomNav .list ul li a:hover::before {
  transform: scaleX(1);
  /* 结束状态 */
  transform-origin: center;
  /* 可选反向动画 */
}
footer .container .copyright {
  margin-bottom: 0.9375rem;
  height: 24px;
  text-align: center;
  line-height: 24px;
}
footer .container .copyright p {
  color: #e8e5df;
  font-size: 20px;
}
/* 响应式媒体查询 */
@media (min-width: 1200px) {
  .business .bigBox {
    grid-template-columns: repeat(3, minmax(300px, 1fr));
  }
  .business .bigBox .boxContain {
    width: 25rem;
  }
  .expertise .container .expertiseArea {
    flex-direction: row;
    gap: 2rem;
  }
  .expertise .container .expertiseArea .left {
    flex: 0 0 30%;
    display: flex;
    flex-direction: column;
    grid-template-columns: unset;
  }
  .expertise .container .expertiseArea .left button {
    width: 100%;
    margin-bottom: 1rem;
  }
  .expertise .container .expertiseArea .left button p {
    font-size: 1.25rem;
  }
  .expertise .container .expertiseArea .right {
    flex: 0 0 65%;
  }
  /* 确保按钮内的箭头在选中/悬停时可见 */
  .expertise .expertiseArea .left button.selected p span,
  .expertise .expertiseArea .left button:hover p span {
    opacity: 1;
  }
}
@media (max-width: 1200px) {
  .projectsArea .projectsRoom .projects .project {
    width: calc(50% - 20px);
  }
  .video {
    padding: 5rem 2.5rem;
  }
  .video .pic {
    width: 37.5rem;
    height: 30rem;
    overflow: hidden;
  }
  .video .pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .video .text {
    width: 21.875rem;
  }
  .expertise .container .expertiseArea .left button p {
    font-size: 1.625rem;
  }
  .topProject .project {
    height: 50vh;
  }
  .topProject .project .pic {
    height: 90%;
  }
  .topProject .project .projectContent {
    bottom: 0rem;
  }
  .business .bigBox .boxContain {
    width: 22.5rem;
  }
  /* banner区域样式 */
  .banner .content .bottom h3 {
    font-size: 4rem;
  }
}
@media (max-width: 992px) {
  /* 移动端导航栏优化 */
  .navbar .container {
    height: 4rem;
  }
  .nav-items {
    top: 4rem;
    height: calc(100vh - 4rem);
  }
  .dropdown-menu {
    position: relative !important;
    background: rgba(50, 50, 50, 0.9) !important;
    margin-left: 1rem;
    display: none;
  }
  .dropdown.active .dropdown-menu {
    display: block;
  }
  .dropdown > a span.iconfont {
    position: absolute;
    right: 1rem;
  }
  .projectsArea .projectsRoom .projects .project {
    width: calc(50% - 20px);
  }
  /* 报告区域响应式 */
  .report .reportContain .top {
    flex-direction: column;
    gap: 2rem;
  }
  .report .reportContain .top .left,
  .report .reportContain .top .right {
    width: 100%;
  }
  .report .reportContain .bottom h3 {
    font-size: 2rem;
  }
  /* 图片视频区域响应式 */
  .video {
    flex-direction: column;
    gap: 2rem;
  }
  .video .text,
  .video .pic {
    width: 100%;
  }
  .expertise .container .expertiseArea .left {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
  .expertise .container .expertiseArea .left button p {
    font-size: 1rem;
  }
  /* 专业区域上的引文样式 */
  .citationText .container .contentArea h3 {
    font-size: 2rem;
  }
  .business .bigBox {
    grid-template-columns: repeat(2, minmax(300px, 1fr));
  }
  .business .bigBox .boxContain {
    width: 18.75rem;
  }
  /* 汉堡菜单样式 */
  .mobile-menu-toggle {
    display: block !important;
  }
  .nav-items {
    position: fixed;
    top: 3.75rem;
    left: -100%;
    width: 80%;
    height: calc(100vh);
    background: rgba(0, 0, 0, 0.95);
    flex-direction: column;
    padding: 2rem 1rem;
    transition: left 0.3s ease;
    z-index: 999;
    overflow-y: auto;
  }
  /* 增加选择器权重 */
  .nav-items.active {
    left: 0 !important;
  }
  .nav-item {
    margin: 0.5rem 0;
    width: 100%;
  }
  .dropdown-menu {
    position: static !important;
    background: transparent !important;
    opacity: 1 !important;
    visibility: visible !important;
    box-shadow: none !important;
    min-width: auto !important;
    padding: 0 !important;
    margin-top: 0.5rem;
    display: none;
  }
  .dropdown-menu.active {
    display: block !important;
  }
  .dropdown-menu li {
    padding: 0.5rem 0 !important;
  }
  .dropdown-menu a {
    padding-left: 1.5rem !important;
  }
  .dropdown:hover .dropdown-menu {
    display: block;
    transform: none;
    top: auto;
  }
  /*  Banner区域响应式优化*/
  .banner {
    min-height: 500px;
    height: auto;
  }
  .banner .content .pic {
    position: relative;
    bottom: 0;
    width: 100%;
    height: 300px;
    margin-top: 2rem;
    border-radius: 0;
  }
  .banner .content .bottom {
    margin-bottom: 2rem;
  }
  .banner .content .bottom h3 {
    font-size: 2.5rem;
  }
}
@media (max-width: 768px) {
  /* 项目标题区域 */
  .laberText .contain1 {
    flex-direction: column;
    padding-top: 5rem;
  }
  .laberText .contain1 .text {
    margin-bottom: 2rem;
  }
  .laberText .contain1 .text p {
    font-size: 18px;
  }
  /* 项目内容区域样式 */
  .projectBox .projectContent {
    padding: 3.75rem 0;
  }
  /* 汉堡菜单样式 */
  .mobile-menu-toggle {
    display: block;
  }
  body {
    padding: 0;
  }
  .contactArea,
  footer {
    padding-right: 0 !important;
  }
  /* banner区域样式 */
  .banner {
    padding-left: 0 !important;
  }
  .banner .content {
    padding: 1rem;
  }
  .banner .content .top {
    margin-top: 4rem;
    flex-direction: column;
    gap: 0.5rem;
  }
}
@media (max-width: 480px) {
  .banner {
    min-height: 400px;
  }
  .banner .bottom h3 {
    font-size: 2.5rem;
  }
  .topText,
  .citationText,
  .expertise,
  .topProject,
  .projects,
  .newsroom {
    padding: 3rem 0;
  }
  .expertise .left button {
    flex: 1 1 100%;
  }
}