/* index.html */
*{
    margin: 0 ;
    padding: 0;
    box-sizing: border-box;
}

.main{
    width:100%;
    margin: 0 auto;
    /*background-color: antiquewhite;*/
}

.top{
    width: 100%;
    height: 100px;
    background-image: url(../img/logo2.png);
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.nav{
    width: 100%;
    height: 80px;
    background-color: #e38617;
    display: flex;
    /* border: dashed 1px red; */
}

.nav-left{
    width: 60%;
    height: 80px;
    display: flex;
    background-image: url(../img/valve.webp);
    background-position: 15px center;
    background-size: auto 65px;
    background-repeat: no-repeat;
}

.nav-right{
    width: 40%;
    height: 80px;
    display: flex;
    justify-content: center;
}

.nav-right a{
    text-decoration: none;
    line-height: 80px;
    color: #000000;
    text-align: center;
    text-shadow: 2px 3px 2px dimgray;
    width: calc(100%/3);
}

.nav-right a:hover:not(.active){
    background-color: rgba(210, 105, 30, 0.5);
}

.active{
    background-color: chocolate;
    font-size: 25px;
    font-weight: bold;
}

.inactive{
    font-size: 23px;
    font-weight: bold;
}

.csimg{
    width: 100%;
    height: 0;
    padding-top: 45.43152%;
    background-image: url(../img/body.png);
    background-size: 100% auto;
    background-repeat: no-repeat;
    box-shadow: 2px 3px 2px dimgray;
    position: relative;
    /* border: dashed 1px red; */
}

.left{
    position: absolute;
    top: 0;
    left: 0;
    width: 15%;
    height: 50%;
    background-color: #d7d7d7;
    border-right: 3px solid #ff7a45;
    display: flex;
    flex-direction: column;
}

.left p{
    width: 100%;
    height: 20%;
    display: flex;
    background-color: rgba(227, 134, 23, 0.6);
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 20px;
    background-image: url("../img/home.png");
    background-size: auto 70%;
    background-repeat: no-repeat;
    background-position: 15px center;
}

.left a{
    height: 20%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    font-size: 20px;
    font-weight: bold;
    color: #000000;
    background: url(../img/link.png) no-repeat 15px center;
    background-size: auto 60%;
}

.left a:hover{
    background: #e38617 url(../img/go.png) no-repeat 15px center;
    background-size: auto 60%;
}

.title{
    width: 230px;
    height: 50px;

    border: 4px solid #e38617;
    color: #e38617;
    font-weight: bold;
    border-radius: 24px;
    line-height: 40px;
    text-align: center;
    margin: 30px auto 0;
    font-size: 23px;
    box-shadow: 2px 3px 2px dimgray;
    text-shadow: 3px 3px 5px #000000;
}

.jsbox{
    width: 90%;
    height: auto;
    padding: 20px;
    margin: 30px auto;
    border-radius: 12px;
    border: 1px solid lightgray;
    box-shadow: -2px -3px 2px dimgray;
}

.js{
    display: flex;
    justify-content: space-between;
}

.js-left{
    width: 65%;
    text-indent: 2em;
    line-height: 43px;
    text-shadow: 3px 3px 5px #e18517;
}

.js-right{
    width: 34%;
}

.js-right img{
    width: 100%;
    height: 49%;
    border-radius: 12px;
    border: 1px solid lightgray;
    box-shadow: 2px 3px 2px dimgray;
}

.foot{
    margin: 0 auto;
    width: 60%;
    font-size: 20px;
    font-family: 楷体;
    color: #000000;
    text-align: center;
}