* {
      margin: 0;
      padding: 0;
	  box-sizing: border-box;
    }
body {
    line-height: 30px;
    font-weight: 500;
    font-style: normal;
    font-size: 14.5px;
	color: #2d2d2d;
	padding-top: 70px;
	background-image: url(../img/bgiac.jpg);
	background-repeat: no-repeat;
    background-size: cover; /* 自动适应屏幕大小，铺满全屏 */
    background-attachment: fixed; /* 滚动页面时背景不动（可选） */

}
/* 所有标题、Banner大字 */
h1, h2, .banner-text {
  font-family: 'Montserrat', Helvetica, Arial, sans-serif;
  font-weight: 800; /* ExtraBold 超粗 */
}

/* 页面正文、说明文字 */
body, p, li {
  font-family: 'Open Sans', Verdana, Arial, sans-serif;
  font-weight: 400; /* Regular 常规字重 */
}
::after, ::before {
    box-sizing: border-box;
}
a{ color: #2d2d2d; 
	text-decoration: none;
}
a:hover{ color: #0085d0;}
li{ list-style-type: none;}
h1 {
	font-size: 30px;
	font-weight: 600;
}
h2 {
	font-size: 24px;
	font-weight: 600;
}
h3 {
	font-size: 20px;
	font-weight: 600;color: #2d2d2d;
}
h4 { font-size:16px; font-weight:600;}
.clear { clear:both; }



@media (max-width: 1025px) {
body {
	margin: 0px;
	color: #2d2d2d;
	font-size: 14px;
    line-height: 25px;
	background-color: #f4fafd;
}
a{ color: #333; 
	text-decoration: none;
}
a:hover{ color: #ccc;}
li{ list-style-type: none;}
h1 {
	font-size: 32px;
	font-weight: 600;
}
h2 {
	font-size: 20px;
	font-weight: 600;
}
h3 {
	font-size: 17px;
	font-weight: 600;color: #2d2d2d;
}
h4 { font-size:15px; font-weight:600;}
}


/*=============导航栏==============*/


    body {
      padding-top: 70px;
    }

    .nav {
      width: 100%;
      background: #fff;
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
      position: fixed;
      top: 0;
      left: 0;
      z-index: 9999;
    }

    .nav-inner {
      max-width: 1400px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
	  padding: 0 0;
    }

    .logo {
      font-size: 22px;
      font-weight: bold;
      color: #222;
      text-decoration: none;
    }
	.meunright { text-align:right; margin-left: 30px;}
	.meunright a { margin-left: 30px;}
	.meunright d { margin-left: 30px; font-weight: 600; color:#0085d0; font-size: 16px;}
	.meunright d i {
    width: 50px;
    height: 30px;
    line-height: 30px; font-size:12px;
    border-radius: 50px;
    border: 1px solid #0085d0;
    margin: 0 5px 0 0;
	color:#0085d0; padding: 3px 3px;
}
.cmenua {display: inline-block;
    text-align: center;
    width: 40px;
    height: 30px;
    background-color: #0085d0;
    border: 1px solid #0085d0;
    color: #fff;
    margin-right: 10px;
    font-size: 13px;
    font-weight: 400;
    border-radius: 5px;
    line-height: 30px;
    transition: all 0.3s;}
.cmenua:hover {
    background-color: #fff;
    border: 1px solid #ccc;
    color: #0085d0;}

    .menu {
      list-style: none;
      display: flex;
      height: 100%;
    }

    .menu > li {
      position: static;
      padding: 0 28px;
      display: flex;
      align-items: center;
    }

    .menu > li > a {
      text-decoration: none;
      color: #333;
      font-size: 15px;
    }

    /* 一级导航下拉小三角 */
    .menu > li:has(.full-dropdown) > a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .menu > li:has(.full-dropdown) > a::after {
      content: "";
      width: 5px;
      height: 5px;
      border-right: 2px solid #333;
      border-bottom: 2px solid #333;
      transform: rotate(45deg);
}
    }

    .submenu a::after,
    .third-menu a::after {
      display: none !important;
    }

    /* 下拉按钮 */
    .dropdown-toggle {
      display: none;
      width: 40px;
      height: 40px;
      position: relative;
      border: none;
      background: none;
      cursor: pointer;
    }
    .dropdown-toggle::after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) rotate(45deg);
      width: 5px;
      height: 5px;
      border-right: 2px solid #333;
      border-bottom: 2px solid #333;
      transition: transform 0.3s;
    }
    .dropdown-toggle.active::after {
      transform: translate(-50%, -50%) rotate(-135deg);
    }

    /* 汉堡按钮 —— 无小三角 */
    .hamburger {
      display: none;
      font-size: 24px;
      background: none;
      border: none;
      cursor: pointer;
    }

    .full-dropdown {
      position: absolute;
      top: 70px;
      left: 0;
      width: 100%;
      background: #fff;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      display: none;
      padding: 40px 0;
    }

    .dropdown-content {
      max-width: 1400px;
      margin: 0 auto;
      display: flex;
      flex-wrap: wrap;
      padding: 0 20px;
      gap: 0;
      justify-content: center;
    }

    /* ------------------------------ */
    /* �电脑端二级菜单 居中竖虚线 */
    /* ------------------------------ */
    .submenu {
      flex: 1;
      list-style: none;
	  margin-right: 80px;
      position: relative;
    }

    /* 电脑端才显示虚线 */
    @media (min-width: 993px) {
      .submenu:not(:last-child)::after {
        content: "";
        width: 1px;
        height: 93%;
        position: absolute;
        right: 0;
        top: 2%;
        background: linear-gradient(to bottom, #ccc 50%, transparent 50%);
        background-size: 100% 8px;
      }
    }

    .submenu > li {
      margin-bottom: 12px;
    }
    .submenu > li > a {
      font-weight: bold;
      font-size: 15px;
      white-space: nowrap;
    }

    .third-menu {
      list-style: none;
      padding-left: 0;
      margin-top: 10px;
    }
    .third-menu li {
      margin-bottom: 6px;
      white-space: nowrap;
    }
    .third-menu a {
      color: #666;
      font-size: 14px;
    }

    .menu > li:hover .full-dropdown {
      display: block;
    }

    .overlay {
      position: fixed;
      top:0; left:0; width:100%; height:100%;
      background: rgba(0,0,0,0.3);
      z-index: 998;
      display: none;
    }

    /* 手机端 */
    @media (max-width: 992px) {
      .menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        padding: 0;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
        z-index: 9999;
        transition: left 0.3s ease;
        overflow-y: auto;
      }
.meunright { display: none;}
      .menu.active {
        left: 0;
      }

      .menu > li {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 0 !important;
        border-bottom: 1px solid #f1f1f1;
      }

      .menu a {
        flex: 1;
        padding: 15px 20px;
        display: block;
      }

      .menu > li > a::after {
        display: none !important;
      }
	  
	  .third-menu {
      list-style: none;
      padding-left: 0;
      margin-top: 0px;
    }
	  .third-menu li {
      margin-bottom: 0px;
      white-space: nowrap;
    }
    .third-menu a {
      color: #666;
      font-size: 14px;
	  padding: 10px 20px;
    }

      .dropdown-toggle {
        display: block;
      }

      .hamburger {
        display: block;
      }

      .full-dropdown {
        width: 100% !important;
        position: static !important;
        box-shadow: none !important;
        padding: 0 0 10px 20px !important;
        background: #fafafa !important;
        display: none;
      }
      .full-dropdown.open {
        display: block !important;
      }

      .dropdown-content {
        flex-direction: column;
        padding: 0;
        gap: 0;
      }

      .submenu {
        padding: 8px 0;
      }
    }