.img-fill{width:100%;display:block}
.banner{margin-top:5.3rem}
.section-title {
    font-size: 3.25rem;
    display: inline-block;
    position: relative;
    font-family: 'SourceHanSerifCN-Heavy';
}
.section-title::after {
    content: "";
    position: absolute;
    bottom: 10%;
    left:0;
    height: 4px;
    width:0%;
    background: var(--main-color);
    border-radius: 1px;
    transition: width .35s linear;
    z-index:-1
}
.section-title.fade-in::after {
    width: 110%;
    transition-delay: .5s
}
.from-bottom-show{opacity:0;transform:translateY(50px)}
.section-desc{font-size:1.15rem;opacity:0;text-transform:uppercase;}
.intro, .production {
    padding: 15vh 10%;
}
.intro_box{display:flex;justify-content:space-between;margin-bottom:10rem}
.intro_head{width:50%;}
.intro_content{flex:1}
.desc{margin-top:2rem}
.hall{padding:0 10% 15rem}
.swiper-container {
    width: 75%;
    margin: 4rem 0;
}

.swiper-button {
    display: flex;
    align-items: center;
    margin-top:3rem;
    text-align: center;
}
.swiper-button-next, .swiper-button-prev {
    width: 40px;
    height: 40px;
    border: 1px solid;
    border-radius: 50%;
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    margin-top: 0;
}
.swiper-button-next:after, .swiper-button-prev:after {
    font-size: 20px;
}
.swiper-button .swiper-pagination {
    position: relative;
    margin: 1rem;
}
.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    border: 1px solid #000;
    margin: 0 5px;
    opacity: 1;
    background: transparent;
    transform:scale(.6)
}
.swiper-pagination-bullet.swiper-pagination-bullet-active{transform:scale(1)}
.production_txt {
    margin-bottom: 5rem;
    text-align: center;
}
.production_txt .section-title::after{
    left:50%;
    transform:translateX(-50%);
}
@media screen and (max-width:700px) {
    body{background:#f3f3f3}
    .intro_head{display:none}
    .production_txt{text-align:left}
    .intro{padding:15vh 0}
    .intro_box{padding:0 10%}
    .swiper-container{width:100%}
    .production_txt .transition{text-align:center}
}