.navbar {width: 1280px;margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;      
      padding: 0 0px;
      height: 72px;      
      position: relative;
      z-index: 20;
      border-bottom: 0px solid #f0f0f0;
    }

    .logo {
      display: flex;
      align-items: center;
      font-size: 1.8rem;
      font-weight: 600;
      color: #1e2b3c;
      letter-spacing: -0.02em;
      gap: 10px;
    }
    .logo img {
      width: auto;
      height: 36px;
      display: block;
    }
    .logo span {
      background: linear-gradient(145deg, #1e2b3c, #2d3f57);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* 右侧容器（桌面菜单 + 预约合作） */
    .nav-right {
      display: flex;
      align-items: center;
      gap: 28px;  /* 菜单与按钮间距 */
    }

    /* 桌面端水平菜单 */
    .desktop-menu {margin-right: 3vw;
      display: flex;
      align-items: center;
    }
    .desktop-menu-list {
      display: flex;
      list-style: none;
      gap: 8px;
      margin: 0;
      padding: 0;
    }
    .desktop-menu-list > li {
      position: relative;
      border-radius: 40px;
    }
    .desktop-menu-item {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 10px 0.6vw;
      font-size: .85vw;
      font-weight: 500;
      color: #fff;
      text-decoration: none;
      border-radius: 40px;
      transition: background 0.2s;
      white-space: nowrap;
      cursor: pointer;
    }
    .desktop-menu-item:hover {
      /*background: #f0f4fa;*/color:#fff;
    }
    .desktop-menu-item .arrow-icon {
      width: 10px;
      height: 10px;
      transition: transform 0.2s;
    }
    .desktop-menu-list > li:hover .desktop-menu-item .arrow-icon {
      transform: rotate(180deg);
    }

    /* 桌面端二级菜单 */
    .desktop-submenu {
      position: absolute;
      top: calc(100% + 8px);
      left: 0;
      min-width:auto;
      background: white;
      border-radius: 20px;
      box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.02);
      padding: 0px 0;
      list-style: none;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-5px);
      transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
      z-index: 30;
    }
    .desktop-menu-list > li:hover .desktop-submenu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .desktop-submenu li {
      padding: 8px 24px;
      font-size: 0.8vw;
      color: #3f4e66;
      cursor: pointer;
      white-space: nowrap;
      transition: background 0.15s;
    }
    .desktop-submenu li:hover {
      background: #eef4fe;
    }
	
	.desktop-submenu li a{text-decoration: none;
      padding: 8px 0px;
      font-size: 0.8vw;
      color: #3f4e66;
      cursor: pointer;
      white-space: nowrap;
      transition: background 0.15s;
    }
    
    .desktop-submenu li a:hover{color: #3f4e66;}

    /* 预约合作链接 (仅PC) */
    .cooperation-link {
      display: inline-block;
      background: #2196f3;
      color: white;
      font-size: 14px;
      font-weight: 500;
      padding: 8px 20px;
      border-radius: 10px;
      text-decoration: none;
      transition: background 0.2s, transform 0.1s;
      white-space: nowrap;
      box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
      border: none;
      cursor: pointer;
    }
    .cooperation-link:hover {
      background: linear-gradient(135deg, #2563eb, #1d4ed8);
      transform: scale(1.02);
    }
    .cooperation-link:active {
      transform: scale(0.98);
    }

    /* 移动端汉堡按钮 (默认隐藏) */
    .menu-btn {background: #fff;
      width: 40px;
      height: 40px;
      display: none;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      cursor: pointer;
      transition: background 0.2s;
    }
    .menu-btn:hover {
      background: #f0f4fa;
    }
    .menu-btn img {
      width: 20px;
      height: 20px;
      display: block;
      pointer-events: none;
    }

    /* 移动端下拉面板 */
    .menu-panel {
      position: absolute;
      top: 72px;
      left: 0;
      width: 100%;
      background: #ffffff;
      border-radius: 0 0 28px 28px;
      box-shadow: 0 20px 30px -8px rgba(0, 20, 40, 0.15), 0 8px 12px -4px rgba(0,0,0,0.05);
      z-index: 15;
      display: none;
      overflow: hidden;
      animation: slideDown 0.25s ease-out;
    }
    .menu-panel.active {
      display: block;
    }
    @keyframes slideDown {
      from { opacity: 0; transform: translateY(-10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .menu-list {
      list-style: none;
      padding: 8px 0;
      max-width: 800px;
      margin: 0 auto;
    }
    .menu-item {
      padding: 18px 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.2rem;
      font-weight: 500;
      color: #1e2b3c;
      border-bottom: 1px solid #f2f4f8;
      cursor: pointer;
      transition: background 0.15s;
    }
    .menu-item:hover {
      background: #f5f9ff;
    }
    .arrow-icon {
      width: 10px;
      height: 10px;
      display: block;
      transition: transform 0.2s;
    }
    .submenu {
      list-style: none;
      background: #f9fcff;
      display: none;
      padding: 4px 0;
      border-bottom: 1px solid #eef2f6;
    }
    li.show-sub > .submenu {
      display: block;
    }
    .submenu-item {
      padding: 16px 28px 16px 56px;
      font-size: 1.1rem;
      color: #3f4e66;
      border-bottom: 1px solid #e9edf3;
      cursor: pointer;
      transition: background 0.15s;
    }
    .submenu-item:hover {
      background: #e6effa;
    }   

    /* 响应式：小于768px 隐藏桌面元素，显示移动端 */
    @media (max-width: 768px) {
      .nav-right {
        display: none;  /* 隐藏整个右侧（桌面菜单 + 预约合作） */
      }
      .menu-btn {
        display: flex;
      }
      .navbar {
        width:90%;
        padding: 0 0%;
        height: 64px;
      }
      .logo {
        font-size: 1.6rem;
      }
      .logo img {
        width: auto;
        height: 32px;
      }
      .menu-panel {
        top: 64px;
      }
      .menu-item {
        padding: 16px 20px;
        font-size: 1.1rem;
      }
      .menu-item a{color: #1e2b3c;}
      .submenu-item {
        padding: 14px 20px 14px 40px;
      }
      .submenu-item a{color: #1e2b3c;}
      .content {
        padding: 24px 16px;
      }
      .card {
        padding: 28px 16px;
      }
      .card h2 {
        font-size: 1.6rem;
      }
    }

    @media (max-width: 480px) {
      .adaptive-frame {
        margin: 0 auto;
        border-radius: 0;
      }
    }