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

  body {
    font-family: Arial, sans-serif;
    line-height: 1.5;
  }

  /* Header */
  header {
    position: relative;
    min-height: 720px;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.tessera-shape {
  width: 100%;
  position: absolute;
  left: 0;
  bottom: -1px;
  line-height: 0;
  direction: ltr;
  height: 40px;
  z-index: 888;
  overflow: hidden;
  transform: rotate(180deg)
}

.tessera-shape svg {
    height: 100%;
    width: 100%;
    vertical-align: bottom
}
.tessera-shape-fill3 {
  fill: #fff;
}

/* 响应式适配 */
@media (max-width: 768px) {
  html {
    font-size: 7vw;
  }
  header {
    background-size: cover;
    /* min-height: 400px; */
  }

  #wave path {
      /* d: path("M0,50 C100,100 200,0 300,50 S500,100 600,50 S800,0 900,50 S1000,100 1000,100 V0 H0 Z"); */
  }
}


  .nav {
    position: absolute;
    top: 0px;
    width: 100%;
    padding: 40px 0;
    background-color: #d6d3d3;
    opacity: 0.2;
    z-index: 1;
  }
  header .bottom {
    position: absolute;
    left: 0;
    top: 80px;
    width: 100%;
    border-bottom: 2px solid #fff;
    opacity: 0.6;
  }
  nav {
    z-index: 2;
    position: absolute;
    top: 20px;
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
  }
@media (max-width: 1200px) {
  nav {
    padding: 0 10px;
    justify-content: flex-end;
  }
}

  nav .logo {
    position: absolute;
    top: 0;
    left: 0;
  }
@media (max-width: 1200px) {
  nav .logo {
    left: 10px;
  }
}
  nav .logo_word {
    display: inline-block;
    font-size: 1.5rem;
    gap: 10px;
    font-weight: bold;
    color: white;
  }

  nav .logo img {
    width: 100px;
  }

  nav ul {
    list-style: none;
    display: flex;
    gap: 35px;
  }

  nav ul li {
    position: relative;
  }
  
  nav li:hover .arrow-icon {
    transform: rotate(180deg); /* 上下颠倒 */
  }

  nav ul li a {
    color: white;
    text-decoration: none;
    font-size: clamp(16px, 1.5rem, 27px);
    font-weight: bold;
    white-space: nowrap;
  }
@media (max-width: 1000px){
  nav ul li a{
    font-size: clamp(15px, 1.2rem, 27px);
  }
}

  nav ul li a:hover {
    opacity: 0.8;
  }

  nav ul li ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #0B3D2C;
    list-style: none;
    padding: 10px 0;
  }

  nav ul li ul li a {
    color: white;
    padding: 10px 20px;
    display: block;
    text-decoration: none;
    white-space: nowrap;
    font-size: 1.2rem;
  }

  nav ul li:hover ul {
    display: block;
  }
  .head-box {
    z-index: 100;
    width: 100%;
    max-width: 1200px;
  }

  header h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-align: center;
  }

  .search-bar {
    display: flex;
    max-width: 600px;
    width: 80%;
    border-radius: 40px;
    overflow: hidden;
    margin: 0 auto;
  }

  .search-bar input {
    flex: 1;
    border: none;
    padding: 10px 15px;
    outline: none;
    font-size: 1rem;
  }

  .search-bar button {
    background-color: #fff;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
  }

  /* Main Content */
  .container {
    padding: 100px 20px 120px;
    display: flex;
    justify-content: center;
  }

  .grid {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    justify-content: center;
    max-width: 1200px;
    width: 100%;
  }

  .card {
    background: #e9f9f1;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    text-align: center;
    align-content: center;
  }
  .card a {
    color: #0B3D2C;
    text-decoration: none;
    height: 320px;
    display: block;
    align-content:center;
  }
  .card:hover {
    background-color: #F0FFF0;
  }

  .card img {
    width: 180px;
  }

  .card h3 {
    font-size: 1.2rem;
  }

  /* Footer */
  footer {
    background: #003d33;
    color: white;
    padding: 70px 0 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  footer .footer-grid {
    display: grid;
    gap: 0.8vw;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    max-width: 1200px;
    width: 100%;
    justify-items: center;
  }
@media (max-width: 1200px) {
  footer .footer-grid {
    padding: 0 20px;
  }
}
@media (max-width: 880px) {
  footer .footer-grid {
    justify-items: start;
  }
}

  footer .footer-brand {
    text-align: left;
  }

  footer h4 {
    position: relative;
    margin-bottom: 35px;
    font-size: 1.1rem;
    color: #F1D2A9;
  }

  footer h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background: white;
  }

  footer ul {
    list-style: none;
  }

  footer ul li {
    /* display: flex;
    gap: 10px;
    align-items: center; */
    margin: 5px 0;
  }

  footer ul li a {
    color: white;
    text-decoration: none;
    font-size: clamp(14px, 1.5vw, 18px);
  }

  footer .social-icons {
    display: flex;
    gap: 10px;
    margin: 10px 0 20px;
  }

  footer .social-icons img {
    width: 25px;
    height: 25px;
  }

  footer .app-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  footer .app-links img {
    width: 150px;
    margin-bottom: 10px;
  }

  footer .copyright {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    margin-top: 20px;
    font-size: 0.9rem;
    flex-wrap: wrap;
  }

  footer .copyright p {
    margin: 5px 0;
  }

  footer .copyright .links a {
    margin-left: 10px;
    text-decoration: none;
    color: white;
  }

  footer .copyright .links a::before {
    content: '|';
    margin-right: 10px;
    color: white;
  }

  footer .copyright .links a:first-child::before {
    content: '';
    margin-right: 0;
  }

  /* Responsiveness */
  @media (max-width: 768px) {
    nav ul {
      flex-direction: column;
    }

    footer .copyright {
      flex-direction: column;
      text-align: center;
    }

    footer .copyright .links {
      margin-top: 5px;
    }
  }

  html, body, #root {
    min-height: 100%;
    display: flex;
    flex-direction: column;
  }

  main {
    flex-grow: 1;
  }
  .foot_dash{
    border-top-style: dashed;
    height: 1px;
    width: 100%;
    max-width: 1200px;
    opacity: 0.3;
    margin-top: 40px;
  }
  .arrow-icon {
    margin-left: 5px;
    width: 12px;
    height: 12px;
    transition: transform 0.3s ease; /* 平滑动画效果 */
  }
  .footer-logo-desc {
    font-size: 14px;
    margin-top: 20px;
  }
  .footer-contactus {
    font-size: 16px;
    margin-top: 35px;
  }
  .contact-us {
    color:#729F28
  }
  .mt22 {
    margin-top: 22px;
  }
  /* 手机版 */

  /* 汉堡菜单按钮 */
  .hamburger {
    display: none; /* 默认隐藏，仅小屏幕显示 */
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 99;
  }

  .hamburger div {
    width: 25px;
    height: 3px;
    background: white;
    transition: all 0.3s ease;
  }

  /* 菜单弹出框 */
  .sidebar {
    position: fixed;
    right: -300px; /* 初始隐藏 */
    top: 0;
    height: 100%;
    width: 250px;
    background: #003d33; /* 浅绿色背景 */
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 1000;
    color: #fff;
    font-size: 20px;
  }
  .sidebar a {
    color: #fff;
    text-decoration: none;
    margin: 3px 0;
    font-size: 20px;
  }

  .sidebar.open {
    right: 0; /* 打开时滑入视图 */
  }

  .sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
  }

  .sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .sidebar-header .logo img {
    width: 150px;
  }

  .sidebar-header .close-btn {
    cursor: pointer;
  }

  /* 菜单列表 */
  .menu {
    list-style: none;
    padding: 20px;
  }
  .menu li {
    padding: 3px 0;
  }
  /* .menu li {
    position: relative;
    margin: 3px 0;
  }
  .menu li::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 150px;
    height: 1px;
    background: white;
  } */

  .dropdown {
    position: relative;
  }

  .menu-item {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    cursor: pointer;
  }

  .arrow-icon {
    transition: transform 0.3s ease;
    pointer-events: none; /* 禁止直接点击箭头 */
  }

  .menu .dropdown .submenu {
    display: none; /* 默认隐藏子菜单 */
    list-style: none;
    padding-left: 20px;
    margin-top: 10px;
  }

  .menu .dropdown.open .submenu {
    display: block; /* 打开子菜单 */
  }

  .menu .dropdown.open .arrow-icon {
    transform: rotate(180deg); /* 箭头向上 */
  }

  /* 背景遮罩 */
  .overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3); /* 半透明背景 */
    display: none;
    z-index: 999;
  }

  .overlay.show {
    display: block; /* 背景遮罩显示 */
  }

  /* 响应式 */
  @media (max-width: 768px) {
    .hamburger {
      display: flex;
    }
    .nav_list {
      display: none;
    }

    .menu-list {
      display: none; /* 隐藏导航菜单 */
    }
    header nav {
      justify-content: flex-end;
    }
  }