.index-about-box{
    display: block;
    position: relative;
    width: 100%;
    margin: 120px 0;   
}
.index-about-bc-box{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    filter: drop-shadow(0px 1px 5px rgba(0,0,0,0.7));
}
.index-about-bc{
    width: 100%;
    height: 100%;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 20% 50%;
    background-image: url(../img/front/index-about-bc.jpg);
    -webkit-clip-path: polygon(0 0, 100% 9%, 100% 100%, 0% 100%);
    clip-path: polygon(0 0, 100% 8.3%, 100% 100%, 0% 100%);
    position: relative;
}
.index-about-bc-mash{
    width: 100%;
    height: 100%;
    display: block;
    background-color: #fff;
    opacity: 0.4;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}
.index-about{
    width: 1200px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    padding-top: 50px;
    padding-bottom: 25px;
    box-sizing: border-box;
}
.index-about-text-box{
    width: calc(100% - 600px);
    max-width: 100%;
    height: 370px;
    display: inline-block;
    padding-right: 100px;
    box-sizing: border-box;
    vertical-align: bottom;
}
.index-about-title-en{
    display: inline-block;
    font-size: 36px;
    font-family: 'roboto';
    font-weight: 300;
}
.index-about-title-ch{
    display: inline-block;
    font-size: 16px;
    letter-spacing: 1px;
}
.index-about-text{
    width: 100%;
    min-height: 200px;
    font-size: 16px;
    color: #555;
    letter-spacing: 2px;
    line-height: 2;
    padding-top: 20px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 6;
    overflow: hidden;
    text-align: justify;
}
.index-about-img-box{
    width: 595px;
    height: 400px;
    max-width: 100%;
    display: inline-block;
    box-sizing: border-box;
    vertical-align: bottom;
    position: relative;
}
.index-about-img{
    width: 100%;
    height: 700px;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    background-image: url(../img/front/index-about-img.jpg);
    box-shadow: 0px 0px 10px rgba(0,0,0,0.7);
    position: absolute;
    bottom: 0;
}
.index-about-text-more{
    margin-top: 10px;
    width: 150px;   
    height: 30px;
    display: block;
    text-align: center;
    border: 1px solid #ccc;
    position: relative;
}
.index-about-text-more p{
    color: #555;
    font-size: 16px;
    line-height: 30px;
    font-weight: lighter;
    position: relative;
    z-index: 1;
    transition: all .5s ease;
}
.index-about-text-more:after{
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #b6d338;
    transform: scale(0,1);
    transition: all .5s ease;
}
.border-line{
    display: block;
    position: absolute;
    z-index: 2;
}
.line-right {
    width: 1px;
    height: 10px;
    display: block;
    background-color: #b6d338;
    bottom: 0;
    right: 0;
    transform-origin: bottom;
    transition: all .2s linear;
    transform: scale(1,1);
}
.line-bottom {
    width: 10px;
    height: 1px;
    display: block;
    background-color: #b6d338;
    bottom: 0;
    right: 0;
    transform-origin: right;
    transition: all .2s linear;
    transform: scale(1,1);
}
/*<---------------hover-------------------->*/
.index-about-text-more:hover.index-about-text-more p{
    color: #fff;
    transition-delay: .2s;
}
.index-about-text-more:hover:after{
    transform: scale(1,1);
    transition-delay: .2s;
}
.index-about-text-more:hover .line-right{
    transform: scale(1,0);
}
.index-about-text-more:hover .line-bottom{
    transform: scale(0,1);
}

@media only screen and (max-width: 1200px){
    .index-about{
        width: 1000px;
    }
    .index-about-img{
        height: 650px;
    }
    .index-about-img-box{
        width: 550px;
    }
    .index-about-text-box{
        width: calc(100% - 555px);
        padding-right: 75px;
    }
}
@media only screen and (max-width: 1000px){
    .index-about{
        width: 800px;
    }
    .index-about-img-box{
        width: 49%;
        height: inherit;
        vertical-align: middle;
    }
    .index-about-img{
        height: 460px;
        position: relative;
    }
    .index-about-text-box{
        width: 50%;
        vertical-align: middle;
    }
    .index-about-box{
        margin: 50px 0;
    }
}
@media only screen and (max-width: 800px){
    .index-about{
        width: 600px;
    }
    .index-about-img{
        height: 355px;
    }
    .index-about-text-box{
        padding-right: 25px;
    }
}
@media only screen and (max-width: 600px){
    .index-about{
        width: 95%;
    }
    .index-about-img{
        display: none;
    }
    .index-about-text-box{
        width: 100%;
        padding-right: 0;
        height: inherit;
    }
}