/*====================导航*********/
.header { width: 100%; /* position: fixed; top: 0; left: 0;*/ z-index: 999; height:auto; padding:20px 30px; background:#fff;  }
/*左侧logo*/
.header .left { width: 12%; }
.header .left a img { height: 50px; margin-top: 6px; }
.header .left .img2 { display: none; }
/*右侧*/
.header .nav { -webkit-transition: 0.5s; -moz-transition: 0.5s; -o-transition: 0.5s; transition: 0.5s; height: 100%; line-height: 50px; display: block; }
.header .navbar_nav li { float: left; position: relative; display: block; }
.header .navbar_nav li:after { content: ""; width: 0; height: 2px; background: orangered; position: absolute; bottom: 0; left: 0; transition: all 0.5s ease 0s; }
.header .navbar_nav li:hover:after { width: 100%; }
.header .navbar_nav li a { text-decoration: none; height: 100%; padding: 0 25px; display: block; -webkit-transition: 0.5s; -moz-transition: 0.5s; -o-transition: 0.5s; transition: 0.5s; color: #333; font-size: 16px; }
.header .navbar_nav li:hover a { color: orangered; }
.header .navbar_nav li.dropdown { display: inherit; position: relative; }
.header .navbar_nav li.dropdown .jt { width: 20px; height: 20px; background: url(i/top.png) no-repeat; background-size: 100% 100%; display: block; }
.header .navbar_nav li.dropdown .dropdown_menu { display: none; position: absolute; top: 50px; width: 100%; background: #fff; box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38); width: 120%; left: -10%; z-index:999; }
.header .navbar_nav li.dropdown .dropdown_menu a { font-size: 14px; color: #666; padding: 0 10px; line-height: 40px; text-align: center; background: #fff; margin-bottom: 2px; }
.header .navbar_nav li.dropdown:hover .dropdown_menu { display: block; background: #f3f3f3; -webkit-transition: 0.5s; -moz-transition: 0.5s; -o-transition: 0.5s; transition: 0.5s; }
.header .navbar_nav li.dropdown:hover .dropdown_menu a { color: #666; }
.header .navbar_nav li.dropdown:hover .dropdown_menu a:hover { color: #fff; background: orange; }
/*白色背景的头部*/
.header.on { background: #fff; border-bottom: 1px solid #ccc;  position: fixed; top: 0; left: 0; }
.header.on .top{ display:none; }
.header.on .left .img1 { display: none; }
.header.on .left .img2 { display: block; }
.header.on .navbar_nav li a { color: #333; }
.header.on .navbar_nav li:hover a { color: orangered; }
.header.on #navToggle span,  .header.on #navToggle span:before,  .header.on #navToggle span:after {  background: #4f4f4f; }

#navToggle { display: none; }
.m_nav { position: fixed; top: 0px; box-shadow: 0 15px 27px 0 rgba(167,165,165,0.38); width: 100%; height: 100%; background: #fff; transition: all ease 0.5s; -webkit-transition: all ease 0.5s; z-index: 1000; opacity: 1; visibility: visible; margin-top: 0; overflow-y: auto; transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms; top: 0; transform: translateX(100%); }
.m_nav.open { transform: translateX(0); z-index:9999 }
.m_nav .top { height: 60px; padding: 20px; box-sizing: border-box; }
.m_nav .top .closed { width: 30px; height: 30px; vertical-align: middle; float: right; cursor: pointer; }
.m_nav .logo { width: 100%; margin: 0 auto; }
.m_nav .logo img { height: 50px; display: block; margin: 30px auto; }
.m_nav .ul { margin-top: 30px; }
.m_nav .ul li { padding: 0 20px; border-bottom: 1px solid #f5f5f5; transform: translateY(0); -webkit-transform: translateY(100%); transform: translateY(100%); -webkit-transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms; opacity: 0; }
.m_nav.open .ul li { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
.m_nav .ul li:nth-child(1) { -webkit-transition: all .2s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all .2s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li:nth-child(2) { -webkit-transition: all .4s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all .4s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li:nth-child(3) { -webkit-transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all .6s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li:nth-child(4) { -webkit-transition: all .8s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all .8s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li:nth-child(5) { -webkit-transition: all 1.0s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all 1.0s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li:nth-child(6) { -webkit-transition: all 1.2s cubic-bezier(.77, 0, .175, 1) 0ms; transition: all 1.2s cubic-bezier(.77, 0, .175, 1) 0ms; }
.m_nav .ul li a { display: block; text-decoration: none; color: #333; font-size: 16px; height: 50px; line-height: 50px; width: 100%; }
.m_nav .ul li .dropdown_menu { display: none; }
.m_nav .ul li.dropdown.active .dropdown_menu { display: block; }
.m_nav .ul li .dropdown_menu a { display: block; height: 50px; line-height: 50px; padding: 0 40px; box-sizing: border-box; border-bottom: 1px solid #f5f5f5; }
.m_nav .ul li .dropdown_menu a:last-child { border: none; }
.banner { width: 100%; }
.banner img { width: 100%; }
 @media screen and (max-width:1196px) {
.header { padding: 0 10px; }
.header #navToggle { height: 100%; padding: 9px 15px; margin-right: -15px; display: inline-block; float: right; }
.header #navToggle span { position: relative; width: 25px; height: 1px; margin-top: 19px; }
.header #navToggle span:before,  .header #navToggle span:after { content: ''; position: relative; width: 100%; height: 1px; left: 0; }
.header #navToggle span,  .header #navToggle span:before,  .header #navToggle span:after { -webkit-transition: 0.3s; -moz-transition: 0.3s; -o-transition: 0.3s; transition: 0.3s; display: block; background: #444; }
.header #navToggle span:before { top: 8px; }
.header #navToggle span:after { bottom: 10px; }
.header #navToggle.open span:before { top: 10px; -webkit-transform: translateY(-11px) rotate(-45deg); -moz-transform: translateY(-11px) rotate(-45deg); -ms-transform: translateY(-11px) rotate(-45deg); -o-transform: translateY(-11px) rotate(-45deg); transform: translateY(-11px) rotate(-45deg); }
.header #navToggle.open span:after { bottom: 12px; -webkit-transform: translateY(10px) rotate(45deg); -moz-transform: translateY(10px) rotate(45deg); -ms-transform: translateY(10px) rotate(45deg); -o-transform: translateY(10px) rotate(45deg); transform: translateY(10px) rotate(45deg); }
.header #navToggle.open span { background: none; }
.header #navToggle.open span:before,  .header #navToggle.open span:after { background: #4f4f4f; }
.header .nav { display: none; }
.banner img { height: 600px; object-fit: cover; }
}