@charset "utf-8";
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td { margin:0; padding:0; }
body{background:#FFFFFF;width: 100%;font-size:14px; color:#000; line-height:24px; font-family:"微软雅黑", "黑体", "宋体";}
a{color: #000;text-decoration: none;}
a:hover{text-decoration: none;}
img { border:none; }
ol,ul,li { list-style:none; }
table { border-collapse:collapse; }
.f-l{float:left}
.f-r{float:right}
.clear{zoom:1}
.clear:after{content: '';display: block;clear: both;}

header{width: 100%;background: #2e5790;margin-bottom: 20px;padding: 10px 0px;}
.logo{background: url(https://images.mentor-cdn.com/mentor-siemens-logo/logo-white.svg) 50% 50% no-repeat;background-size: 139px 40px;margin-left: 20px;
    display: inline-block;height: 40px;width: 139px;}
#pdf_wrap{}
.pdf-inner{width: 1120px;margin: 0 auto;}
.pdf-inner section{float: left;width: 530px;height: 200px;background:#ffffff;margin: 8px 0px;padding: 10px;border: 1px solid #f0f0f0;}
.pdf-inner section:hover{box-shadow:0 5px 15px rgba(45,50,55,.2);-webkit-transform:translateY(-5px);-moz-transform:translateY(-5px);
-o-transform:translateY(-5px);-ms-transform:translateY(-5px);transform:translateY(-5px);-webkit-transition: all .2s ease-out;
    -moz-transition: all .2s ease-out;
    -ms-transition: all .2s ease-out;
    -o-transition: all .2s ease-out;
    transition: all .2s ease-out;}
.pdf-inner section:nth-child(2n+1){margin-right: 16px;}
.secleft{float: left;}
.secleft a img{width: 220px;height: 200px;border: 1px solid #e5e5e5;}
.secleft a{display: block;text-align: center;width: 220px;height: 200px;}
.secleft a img{width: 220px;height: 200px;overflow: hidden;}
.secleft a img:hover{opacity: 0.9;transition: 0.5s;}


.secright{float: left;margin-left: 6px;width: 280px;}
.secright .title{font-size: 18px;margin-top: 10px;display: block;margin-bottom: 6px;font-weight: bold;}
.secright .title:hover{color: #2E5790;}
.secright p{width: 280px;font-size: 14px;color: #555555;}

.footer-inner{color: #FFFFFF;text-align: center;padding: 10px 0px;background: #222222;margin-top: 40px;font-weight:normal}
#btn{ position: fixed;
    right: 20px;
    bottom: 80px;
    border: 1px solid #929292;
    display: block;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    transition: all 0.4s ease;
    opacity: 0;}
#btn:hover{background: #868686;-webkit-transition: all .2s ease-out;
    -moz-transition: all .2s ease-out;
    -ms-transition: all .2s ease-out;
    -o-transition: all .2s ease-out;
    transition: all .2s ease-out;}
#btn:after{content: "";
    display: block;
    border: 8px solid;
    border-color: transparent transparent #929292 transparent;
    width: 0;
    position: relative;
    top: 22%;
    left: 34%;}
#btn:hover:after{border-color: transparent transparent #ffffff transparent;}


@media screen and (max-width:1160px){	
.pdf-inner{width: 100%;margin: 0 auto;}
.pdf-inner section{float: left;width: 97%;height: auto;background:#ffffff;margin: 0.4rem auto;padding: 0.4rem 1%;}
.pdf-inner section:nth-child(2n+1){margin-right: 0px;}
.secleft{width: 20%;}
.secleft a img{width: 100%;height: auto;border: 1px solid #e5e5e5;}
.secright{float: left;margin-left: 1rem;width:75%;}
.secright p{width: 100%;font-size: 16px;}
}