* {
          margin: 0;
          padding: 0;
        }

        body {

          display: flex;
          justify-content: center;
          align-items: center;
        }

        a {
          text-decoration: none;
          color: inherit;
          cursor: pointer;
          margin: 0;
          padding: 0;
        }

        .container {
          width: 100%;
          background-size: cover;
          background-position: center;
          background-repeat: no-repeat;
          height: 400px;
        }

        header {
          position: relative;
        }

        .navbar {
          display: flex;
          justify-content: space-between;
          align-items: center;
          position: relative;
          width: 100%;
          padding-top: 16px;
        }

        .logo {
          width: 101px;
          height: 81px;
          margin-left: 84px;
        }

        .nav-links {
          display: flex;
          list-style: none;
          gap: 84px;
        }

        .nav-links>li>a {
          text-decoration: none;
          color: #ffffff;
          font-size: 18px;
          font-family: LINE Seed Sans, LINE Seed Sans-Regular;
          font-weight: 400;
          transition: all 0.3s ease;
          padding: 8px 0;
          position: relative;
        }

        .nav-links>li>a:hover {
          color: white;
        }

        .nav-links>li>a::after {
          content: '';
          position: absolute;
          bottom: 0;
          left: 0;
          width: 0;
          height: 3px;
          background: #fff;
          border-radius: 3px;
          transition: width 0.3s ease;
        }

        .nav-links>li>a:hover::after {
          width: 100%;
        }

        .hamburger {
          display: none;
          cursor: pointer;
          background: transparent;
          border: none;
          outline: none;
          padding: 10px;
        }

        .hamburger .line {
          display: block;
          width: 39px;
          height: 2px;
          background: #ffffff;
          margin: 6px 0;
          border-radius: 3px;
          transition: all 0.3s ease;
        }

        .header-right {
          display: flex;
          align-items: center;
          gap: 3.3438rem;
          margin-right: 127px;
        }

        .douyin {
          width: 22px;
          height: 27px;
        }

        .map {
          width: 27px;
          height: 27px;
        }


        .mobile-nav {
          display: none;
          background-size: cover;
          background-position: center;

          padding: 20px;
          position: absolute;
          top: 100%;
          left: 0;
          width: 100%;
          z-index: 100;
          box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
          border-radius: 0 0 15px 15px;
          transform: translateY(-10px);
          opacity: 0;
          visibility: hidden;
          transition: all 0.4s ease;
        }

        .mobile-nav.active {
          transform: translateY(0);
          opacity: 1;
          visibility: visible;
        }

        .mobile-nav ul {
          list-style: none;
        }

        .mobile-nav ul li {
          margin: 15px 0;
        }

        .mobile-nav ul li a {
          text-decoration: none;
          color: rgba(255, 255, 255, 0.9);
          font-size: 20px;
          font-weight: 500;
          display: block;
          padding: 10px;
          border-radius: 8px;
          transition: all 0.3s ease;
        }

        .mobile-nav ul li a:hover {
          background: rgba(255, 255, 255, 0.1);
          color: white;
        }

        .hamburger.active .line:nth-child(1) {
          transform: translateY(9px) rotate(45deg);
        }

        .hamburger.active .line:nth-child(2) {
          opacity: 0;
        }

        .hamburger.active .line:nth-child(3) {
          transform: translateY(-9px) rotate(-45deg);
        }

        /* Mobile dropdown menu styles */
        .mobile-nav-sec {
          position: relative;
        }

        .mobile-header-menu {
          display: none;
          list-style: none;
          padding-left: 20px;
          margin-top: 5px;
        }

        .mobile-header-menu li {
          margin: 10px 0;
        }

        .mobile-header-menu li a {
          font-size: 18px;
          color: rgba(255, 255, 255, 0.7);
        }

        .mobile-header-menu li a:hover {
          color: white;
        }

        .mobile-nav-sec.active .mobile-header-menu {
          display: block;
        }

        .mobile-header-menu {
          display: none;
          list-style: none;
          padding-left: 20px;
          margin-top: 5px;
          max-height: 0;
          overflow: hidden;
          transition: max-height 0.3s ease;
        }

        .mobile-nav-sec.active .mobile-header-menu {
          display: block;
          max-height: 300px;
          /* 根据实际内容高度调整 */
        }

        @media (max-width: 1200px) {
          .nav-links {
            display: none;
          }

          .hamburger {
            display: block;
          }

          .mobile-nav {
            display: block;
          }

          .logo {
            margin: 0;
          }
        }

        @media (max-width: 768px) {

          .header-right {
            margin: 0;
          }
        }

        .demo-info {
          background: #f8f9fa;
          padding: 25px;
          border-radius: 12px;
          margin-top: 30px;
          border-left: 4px solid #2980b9;
        }

        .demo-info h3 {
          color: #2980b9;
          margin-bottom: 15px;
        }

        .demo-info p {
          color: #555;
          font-size: 16px;
          margin-bottom: 0;
        }

        /* 二级菜单 */
        .nav-sec {
          position: relative;
        }

        .header-menu {
          margin-top: 30px;
          width: 258px;
          height: 189px;
          background: #ffffff;
          display: none;
          position: absolute;
          top: 0;
          left: -48px;
        }

        .header-menu ul {
          width: 258px;
          list-style: none;
          display: flex;
          flex-direction: column;
          align-items: center;
          padding: 0;
          margin: 0;
        }

        .header-menu ul li {
          width: 258px;
          height: 63px;
          text-align: center;
          line-height: 63px;
          font-size: 20px;
          font-family: Microsoft YaHei, Microsoft YaHei-Regular;
          font-weight: 400;
          text-align: center;
          color: #8a8a8a;

        }

        .header .display {
          background-color: #f10d0c;
          color: #ffffff;
        }

        .header-menu li:hover {
          background-color: #f10d0c;
          color: #ffffff;
        }

        .header-menu a {
          text-decoration: none;
          display: block;
          width: 100%;
          height: 100%;
        }