* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
  }

  body {
      min-height: 100vh;
      padding-top: 100px;
      color: #fff;
      font-family: "Microsoft YaHei", Arial, sans-serif;
      background: #000 url("../pictures/starbg.png") no-repeat center top;
      background-size: cover;
      background-attachment: fixed;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
      margin: 0;
  }

  .container {
      max-width: 1920px;
      margin: 0 auto;
      flex: 1;
      width: 95%;
      margin-top: 80px;
  }

  .other_container {
      max-width: 1920px;
      margin: 0 auto;
      width: 95%;
      margin-top: 30px;
  }


  /* 小屏幕端 (平板) */
  @media (max-width: 1024px) and (min-width: 768px) {
      .container {
          margin-top: 80px;
      }

      .other_container {
          margin-top: 10px;
      }
  }

  /* 移动端 */
  @media (max-width: 767px) {
      .container {
          margin-top: 60px;
      }

      body {
          padding-top: 50px;
      }

      .other_container {
          margin-top: 10px;
      }

  }

  /* 顶部导航栏容器 */
  .header {
      background: rgba(0, 0, 0, 0.8);
      backdrop-filter: blur(10px);
      position: fixed;
      /* 固定在顶部 */
      top: 0;
      left: 0;
      right: 0;
      width: 100%;
      z-index: 1000;
  }

  .nav-container {
      max-width: 1920px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      height: 100px;
      width: 95%;
  }

  /* Logo */
  .nav_logo {
      width: 70px;
      height: auto;
      cursor: pointer;
  }

  /* 移动端菜单按钮 */
  .mobile-menu-btn {
      display: none;
      flex-direction: column;
      cursor: pointer;
      padding: 5px;
      z-index: 1001;
      position: relative;
  }

  .mobile-menu-btn span {
      width: 25px;
      height: 3px;
      background: linear-gradient(135deg, #fff 0%, #fff 100%);
      margin: 3px 0;
      transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
      border-radius: 3px;
      box-shadow: 0 2px 5px rgba(102, 126, 234, 0.3);
  }

  .mobile-menu-btn.active span:nth-child(1) {
      transform: rotate(45deg) translate(8px, 8px);
  }

  .mobile-menu-btn.active span:nth-child(2) {
      opacity: 0;
  }

  .mobile-menu-btn.active span:nth-child(3) {
      transform: rotate(-45deg) translate(7px, -7px);
  }

  /* 导航菜单 */
  .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
  }

  .nav-menu>li {
      position: relative;
      margin-right: 10px;
  }

  .nav-menu>li .clouds {
      height: 30px;
      width: auto;
      display: block;
      float: left;
      margin-top: 15px;

  }

  .nav-menu>li>a {
      display: flex;
      align-items: center;
      justify-content: center;
      /* PC端居中 */
      padding: 10px;
      color: #e0e0e0;
      text-decoration: none;
      font-size: 16px;
      transition: all 0.3s ease;
      position: relative;
      min-width: 80px;
      /* 设置最小宽度确保对齐效果 */
  }

  @media (min-width: 769px) {
      .nav-menu>li>a {
          margin-top: 10px;
      }
  }

  @media (max-width: 769px) {
      .nav-menu>li .clouds {
          display: none;
      }

  }

  .nav-menu>li>a::before {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 3px;
      background: linear-gradient(90deg, #ffd699 0%, #ffd699 100%);
      transition: width 0.3s ease;
  }

  .nav-menu>li>a:hover {
      color: #fff;
  }

  .nav-menu>li>a:hover::before {
      width: 80%;
  }

  .nav-menu>li.active>a {
      color: #ffd699;
  }

  /* 当前页面高亮样式 - 文字变色+底部实线 */
  .nav-menu a.current-page {
      color: #ffd699 !important;
      font-weight: bold;
      position: relative;
  }

  /* PC端一级菜单底部实线 - 居中显示 */
  @media (min-width: 769px) {

      .nav-menu>li>a.current-page::after {
          content: '';
          position: absolute;
          bottom: 0;
          left: 50%;
          transform: translateX(-50%);
          width: 60%;
          /* 缩小宽度使其居中更明显 */
          height: 3px;
          background: linear-gradient(90deg, #ffd699 0%, #ffd699 100%);
      }

      /* 子菜单项左侧实线 */
      .submenu a.current-page::after {
          content: '';
          position: absolute;
          left: 0;
          top: 50%;
          transform: translateY(-50%);
          width: 4px;
          height: 60%;
          background: linear-gradient(180deg, #ffd699 0%, #ffd699 100%);
      }
  }

  /* 父级菜单高亮样式（只有文字变色） */
  .nav-menu li.active-path>a {
      color: #ffd699;
  }

  /* 箭头指示器 */
  .nav-menu .arrow {
      display: inline-block;
      margin-left: 6px;
      font-size: 10px;
      transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
      color: #ffd699;
  }

  /* PC端悬停箭头旋转 - 只在PC端生效 */
  @media (min-width: 769px) {

      /* 一级菜单和二级菜单的箭头悬停旋转 */
      .nav-menu li:hover>a .arrow,
      .submenu li:hover>a .arrow {
          transform: rotate(180deg);
      }
  }

  /* 移动端和PC端激活状态箭头旋转 */
  .nav-menu li.active>a .arrow {
      transform: rotate(180deg);
  }

  /* 二级菜单 */
  .submenu {
      position: absolute;
      top: 100%;
      left: 0;
      background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.5) 100%);
      min-width: 220px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-15px);
      transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
      list-style: none;
      border-radius: 8px;
      border: 1px solid #000;
      overflow: visible;
      padding: 0;
      /* 允许三级菜单溢出 */
  }

  .nav-menu>li:hover>.submenu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
  }

  /* PC端二级菜单悬停展开 */
  @media (min-width: 769px) {
      .nav-menu>li:hover>.submenu {
          opacity: 1;
          visibility: visible;
          transform: translateY(0);
      }
  }

  /* 移动端二级菜单点击展开 */
  @media (max-width: 768px) {
      .nav-container {
          height: 80px;
      }

      .nav_logo {
          width: 50px;
          height: auto;
      }

      .nav-menu>li.active>.submenu {
          opacity: 1;
          visibility: visible;
          transform: translateY(0);
      }
  }

  .submenu li {
      position: relative;
  }

  .submenu li a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 20px;
      color: #fff;
      text-decoration: none;
      font-size: 14px;
      transition: all 0.3s ease;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      position: relative;
  }

  .submenu li a::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      width: 0;
      height: 100%;
      background: linear-gradient(90deg, #ffd699 0%, rgba(118, 75, 162, 0.2) 100%);
      transition: width 0.3s ease;
      z-index: 0;
  }

  .submenu li a>* {
      position: relative;
      z-index: 1;
  }

  .submenu li:last-child a {
      border-bottom: none;
  }

  .submenu li a:hover {
      color: #fff;
      padding-left: 28px;
  }

  .submenu li a:hover::before {
      width: 100%;
  }

  /* 三级菜单 */
  .submenu .submenu {
      top: 0;
      left: 100%;
      margin-left: 2px;
      transform: translateY(-15px);
      /* 默认隐藏状态 */
  }

  /* PC端三级菜单悬停展开 */
  @media (min-width: 769px) {

      /* 三级菜单初始状态 */
      .submenu .submenu {
          transform: translateX(-15px);
      }

      /* 二级菜单项悬停时，展开三级菜单 */
      .submenu li:hover>.submenu {
          opacity: 1;
          visibility: visible;
          transform: translateX(0);
      }
  }

  /* 移动端三级菜单点击展开 */
  @media (max-width: 768px) {
      .submenu li.active>.submenu {
          opacity: 1;
          visibility: visible;
          transform: translateY(0);
      }
  }

  /* 移动端遮罩层 */
  .menu-overlay {
      display: none;
  }

  /* 响应式设计 - 移动端 */
  @media (max-width: 768px) {

      /* 遮罩层 - 不遮挡header */
      .menu-overlay {
          display: block;
          position: fixed;
          top: 80px;
          /* 从header下方开始 */
          left: 0;
          width: 100vw;
          height: calc(100vh - 110px);
          background: rgba(0, 0, 0, 0.8);
          opacity: 0;
          visibility: hidden;
          transition: all 0.3s ease;
          z-index: 998;
          backdrop-filter: blur(5px);
      }

      .menu-overlay.active {
          opacity: 1;
          visibility: visible;
      }

      .mobile-menu-btn {
          display: flex;
      }

      .nav-menu {
          position: fixed;
          top: 80px;
          /* 从header下方开始 */
          right: 0;
          /* 从右侧出现 */
          width: 100vw;
          /* 占据整个屏幕宽度 */
          height: calc(100vh - 80px);
          /* 占据整个屏幕高度 */
          background: #000;
          flex-direction: column;
          align-items: stretch;
          opacity: 0;
          visibility: hidden;
          transform: translateX(100%);
          /* 从右侧隐藏 */
          transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
          box-shadow: -5px 0 30px rgba(0, 0, 0, 0.8);
          overflow-y: auto;
          overflow-x: hidden;
          z-index: 999;
          padding: 0;
      }

      .nav-menu.active {
          opacity: 1;
          visibility: visible;
          transform: translateX(0);
          /* 滑入屏幕 */
      }

      .nav-menu>li {
          border-bottom: 1px solid rgba(255, 255, 255, 0.05);
          opacity: 0;
          transform: translateX(50px);
          transition: all 0.4s ease;
      }

      /* 菜单项依次出现动画 */
      .nav-menu.active>li:nth-child(1) {
          animation: slideInRight 0.4s 0.1s forwards;
      }

      .nav-menu.active>li:nth-child(2) {
          animation: slideInRight 0.4s 0.3s forwards;
      }

      .nav-menu.active>li:nth-child(3) {
          animation: slideInRight 0.4s 0.5s forwards;
      }

      .nav-menu.active>li:nth-child(4) {
          animation: slideInRight 0.4s 0.7s forwards;
      }

      .nav-menu.active>li:nth-child(5) {
          animation: slideInRight 0.4s 0.9s forwards;
      }

      .nav-menu.active>li:nth-child(6) {
          animation: slideInRight 0.4s 1.1s forwards;
      }

      @keyframes slideInRight {
          to {
              opacity: 1;
              transform: translateX(0);
          }
      }

      .nav-menu>li>a {
          padding: 18px 20px;
          font-size: 18px;
          justify-content: space-between;
          /* 移动端两端对齐 */
      }

      /* 移动端二级菜单 */
      .submenu {
          position: static;
          opacity: 1;
          visibility: visible;
          transform: none;
          box-shadow: none;
          max-height: 0;
          overflow: hidden;
          transition: max-height 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
          border-radius: 0;
          border: none;
          background: rgba(0, 0, 0, 0.3);
      }

      .nav-menu>li.active>.submenu {
          max-height: 800px;
      }

      /* 二级菜单项动画 */
      .submenu li {
          opacity: 0;
          transform: translateX(30px) scale(0.9);
          transition: all 0.3s ease;
      }

      .nav-menu>li.active>.submenu li:nth-child(1) {
          animation: fadeInScale 0.3s 0.1s forwards;
      }

      .nav-menu>li.active>.submenu li:nth-child(2) {
          animation: fadeInScale 0.3s 0.2s forwards;
      }

      .nav-menu>li.active>.submenu li:nth-child(3) {
          animation: fadeInScale 0.3s 0.3s forwards;
      }

      .nav-menu>li.active>.submenu li:nth-child(4) {
          animation: fadeInScale 0.3s 0.4s forwards;
      }

      .nav-menu>li.active>.submenu li:nth-child(5) {
          animation: fadeInScale 0.3s 0.5s forwards;
      }

      @keyframes fadeInScale {
          to {
              opacity: 1;
              transform: translateX(0) scale(1);
          }
      }

      .submenu li a {
          padding-left: 40px;
          background: rgba(0, 0, 0, 0.2);
          border-left: 3px solid transparent;
          transition: all 0.3s ease;
      }

      .submenu li a:hover,
      .submenu li a:active {
          padding-left: 50px;
          background: rgba(102, 126, 234, 0.3);
          border-left-color: #ffd699;
      }

      /* 移动端三级菜单 */
      .submenu .submenu {
          position: static;
          margin-left: 0;
          background: rgba(0, 0, 0, 0.5);
      }

      .submenu li.active>.submenu {
          max-height: 800px;
      }

      /* 三级菜单项动画 */
      .submenu .submenu li {
          opacity: 0;
          transform: translateX(40px) rotateY(90deg);
          transition: all 0.4s ease;
      }

      .submenu li.active>.submenu li:nth-child(1) {
          animation: rotateInRight 0.4s 0.1s forwards;
      }

      .submenu li.active>.submenu li:nth-child(2) {
          animation: rotateInRight 0.4s 0.2s forwards;
      }

      .submenu li.active>.submenu li:nth-child(3) {
          animation: rotateInRight 0.4s 0.3s forwards;
      }

      .submenu li.active>.submenu li:nth-child(4) {
          animation: rotateInRight 0.4s 0.4s forwards;
      }

      .submenu li.active>.submenu li:nth-child(5) {
          animation: rotateInRight 0.4s 0.5s forwards;
      }

      @keyframes rotateInRight {
          to {
              opacity: 1;
              transform: translateX(0) rotateY(0deg);
          }
      }

      .submenu .submenu li a {
          padding-left: 60px;
          background: rgba(0, 0, 0, 0.4);
          border-left: 3px solid transparent;
          transition: all 0.3s ease;
      }

      .submenu .submenu li a:hover,
      .submenu .submenu li a:active {
          padding-left: 70px;
          background: rgba(102, 126, 234, 0.4);
          border-left-color: #ffd699;
      }

      .nav-menu .arrow {
          margin-left: auto;
      }
  }

  /* 页面内容 */

  /* 返回顶部按钮 */
  .scroll-to-top {
      position: fixed;
      right: 20px;
      bottom: 30px;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ffd699 0%, #e0a64d 100%);
      color: #000;
      border: none;
      outline: none;
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
      display: none;
      /* 默认隐藏，滚动后显示 */
      align-items: center;
      justify-content: center;
      cursor: pointer;
      z-index: 1001;
      transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .scroll-to-top:hover {
      transform: scale(1.06);
  }

  /* 可见状态 */
  .scroll-to-top.show {
      display: flex;
  }

  /* 移动端尺寸优化 */
  @media (max-width: 768px) {
      .scroll-to-top {
          width: 40px;
          height: 40px;
          right: 16px;
          bottom: 20px;
      }
  }

  .content {
      max-width: 1200px;
      margin: 40px auto;
      padding: 40px;
      background: linear-gradient(135deg, #2d2d2d 0%, #1a1a1a 100%);
      border-radius: 12px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
      border: 1px solid #333;
      color: #e0e0e0;
  }

  .content h1 {
      background: linear-gradient(135deg, #ffd699 0%, #ffd699 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 20px;
  }

  .content h2 {
      color: #fff;
      margin: 30px 0 15px 0;
  }

  .content p {
      color: #b0b0b0;
      line-height: 1.8;
  }

  .content ul {
      color: #b0b0b0;
  }

  .content ul li {
      margin: 10px 0;
  }




  /* 视频弹窗 */



  @keyframes modalSlide {
      from {
          top: -100%;
          transform: translate(-50%, 0);
          opacity: 0;
      }

      to {
          top: 50%;
          transform: translate(-50%, -50%);
          opacity: 1;
      }
  }


  /* 视频弹窗 */

  .home_video_mask {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 9999;
      display: none;
      width: 100vw;
      height: 100vh;
      background: rgba(0, 0, 0, 0.5);
  }

  .modal-wrapper {
      position: relative;
      position: absolute;
      top: 50%;
      left: 50%;
      width: 50vw;
      aspect-ratio: 1.65 / 1;
      transform: translate(-50%, -50%);
      animation: modalSlide 0.3s ease-out;
  }


  .home_video_mask .pop_video_area {
      width: 100%;
      height: 100%;
      overflow: hidden;
      overflow: visible;
      position: relative;
      background-size: 100% 100%;
      box-sizing: border-box;
      padding: 1.5rem 1.2rem 1.1rem 1.3rem;
  }

  .home_video_mask .pop_video_area::after {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      border-radius: inherit;
      background-image: url("../pictures/borderbg/video_border.png");
      background-size: 100% 100%;
      background-repeat: no-repeat;
      background-position: center;
      z-index: 15;
  }



  .home_video_mask .pop_video_loading {
      width: 100%;
      padding: 15px;
      color: #fff;
      background-color: #494646;
  }

  .video_box {
      width: 100%;
      height: 100%;
      background: #000;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
  }

  .play_btn {
      position: absolute;
      width: 30%;
      height: auto;
      z-index: 99;
      cursor: pointer;
      transition: all 0.3s;
  }

  .play_btn:hover {
      transform: scale(1.2);
  }

  .video_box video {
      width: 100%;
      height: 100%;
      object-fit: fill;
  }

  .modal-close {
      position: absolute;
      top: -50px;
      right: 10px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #fff;
      cursor: pointer;
  }

  .modal-close img {
      width: 100%;
      height: 100%;
  }

  /* 小屏幕端 (平板) */
  @media (max-width: 1024px) and (min-width: 768px) {

      .modal-wrapper {
          width: 75vw;
      }

      .home_video_mask .pop_video_area {
          padding: 1rem;
      }

  }

  /* 移动端 */
  @media (max-width: 767px) {
      .modal-wrapper {
          width: 100vw;
      }


      .home_video_mask .pop_video_area {
          padding: 0.5rem;
      }

      .modal-close {
          position: absolute;
          top: -30px;
          right: 10px;
          width: 30px;
          height: 30px;
          border-radius: 50%;
          background: #fff;
          cursor: pointer;
      }

      .modal-close img {
          width: 100%;
          height: 100%;
      }
  }

  .commonBaner {
      height: 230px;
      max-width: 1920px;
      margin: 0 auto;
      width: 100%;
  }

  .carousel-item {
      height: 230px;
  }

  @media (max-width: 768px) {
      .carousel-item {
          height: 200px;
      }

  }