.index-about-box{
    width: 100%;
    display: block;
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
    padding: 10rem 0;
    margin-top: 5rem;
}
.index-about-all-box{
    width: 1000px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    font-size: 0;
    position: relative;
    z-index: 1;
    text-align: center;
}
.index-about-text-box{
    margin: 3.75rem 0;
}
.index-about-text{
    margin-bottom: 2.25rem;
}
.index-about-text p{
    font-family: "Noto Sans TC";
    font-size: 1.125rem;
    line-height: 2;
    letter-spacing: 0.06em;
    color: #666;
}
.index-about-slogan-box p{
    font-family: "Noto Sans TC";
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 2;
    letter-spacing: 0.06em;
    color: #000;
}
.index-about-btn{
    width: 300px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    text-align: center;
    background-color: #00286e;
    font-family: "Noto Sans TC";
    font-size: 1.125rem;
    line-height: 3.75rem;
    color: #fff;
    letter-spacing: 0.06em;
    box-sizing: border-box;
    padding-left: 0.06em;
    position: relative;
    transition: all .3s linear
}
.index-about-btn span{
    position: absolute;
    right: 15px;
}
.index-about-bg1-box{
    width: 32vw;
    position: absolute;
    top: 40%;
    transform: translateY(-50%);
    left: -8%;
    box-sizing: border-box;
}
.index-about-bg2-box{
    width: 35vw;
    position: absolute;
    top: 50%;
    right: 0;
    box-sizing: border-box;
    transform: translateY(-50%)
}




@media only screen and (max-width: 1200px){
    .index-about-box{
        padding: 10rem 0;
    }
}
@media only screen and (max-width: 1000px){
    .index-about-box{
        padding: 5rem 0;
    }
    .index-about-text-box{
        margin: 2.5rem;
    }
}
@media only screen and (max-width: 768px){
    .index-about-box{
        padding: 2.5rem 0;
        margin-top: 0;
    }
    .index-about-text-box{
        margin: 1.25rem;
    }
    .index-about-text{
        margin-bottom: 1.125rem;
    }
    .index-about-bg1-box,
    .index-about-bg2-box{
        display: none;
    }
}
@media only screen and (max-width: 550px){
    .index-about-box{
        padding-bottom: 1.25rem;
    }
    .index-about-text-box{
        margin: 0.6125rem;
    }
    .index-about-text{
        margin-bottom: 0.6125rem;
    }
    .index-about-text p{
        font-size: 0.875rem;
        line-height: 1.4;
    }
    .index-about-slogan-box p{
        font-size: 1rem;
        line-height: 1.4;
    }
    .index-about-btn{
        width: 200px;
        font-size: 1rem;
        line-height: 2.5rem;
        margin-top: 20px;
    }
}



@media only screen and (min-width: 769px){
    .index-about-btn:hover{
        color: #fff;
        background-color: #000;
    }


    .index-about-text,
    .index-about-slogan-box,
    .index-about-btn,
    .index-about-bg1,
    .index-about-bg2{
        opacity: 0;
    }
    .index-about-text.anima{
        animation: fadeInUp 1.4s ease 0s 1 both;
    }
    .index-about-slogan-box.anima{
        animation: fadeInUp 1.4s ease 0s 1 both;
    }
    .index-about-btn.anima{
        animation: fadeInLeft 1.4s ease 0s 1 both;
    }
    .index-about-bg1-box.anima .index-about-bg1{
        animation: fadeInLeft 1.4s ease 0s 1 both;
    }
    .index-about-bg2-box.anima .index-about-bg2{
        animation: fadeInRight 1.4s ease 0s 1 both;
    }
}