.secs{
    position: relative;
    overflow: hidden;
    width: 90vw;
    /*height: 785px;*/
    aspect-ratio: 16/10;
    left:50%;
    transform: translateX(-50%);

}
.secs img{
    width: 100%;
    height: auto;
    display: block;
}
.bg-part {
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateY(50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.bg-part.visible {
    opacity: 1;
    transform: translateY(0);
}
.stext img{
    position: absolute;
    height: 100%;
    width: auto;
    top: 0;
    left: 0;
}
.pic img{
    position: absolute;
    height: 100%;
    width: auto;
    top: 0;
    right: 0;
}
.laotou img{
    position: absolute;
    height: 100%;
    width: auto;
    bottom: 0;
    left: 0;
}

.tirs{

    position: relative;
    overflow: hidden;
    width: 100vw;
    aspect-ratio: 4/5;
    left:50%;
    transform: translateX(-50%);


}
.waves{
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: auto;
    animation: moveWaves 10s linear infinite;
}
.waves:nth-child(2) {
  left: 100%;
}
.tirs img{
    position: absolute;
    width: 100%;
    height: auto;
    display: block;
    top: 0;
    left: 0;

}
.tirr{
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateX(50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.tirl{
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateX(-50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.tirr.visible{
    opacity: 1;
    transform: translateX(0);
}
.tirl.visible{
    opacity: 1;
    transform: translateX(0);
}
.fifs{
    position: relative;
    overflow: hidden;
    width: 100vw;
    aspect-ratio: 11/10;
    left:50%;
    transform: translateX(-50%);
}
.fifs img{
    position: absolute;
    width: 100%;
    height: auto;
    display: block;
    top: 0;
    left: 0;

}
.fis1{
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateX(50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.fis2{
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateX(-50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.txt{
    position: absolute;
    opacity: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateY(50px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.fis1.visible{
    opacity: 1;
    transform: translateX(0);
}
.fis2.visible{
    opacity: 1;
    transform: translateX(0);
}
.txt.visible{
    opacity: 1;
    transform: translateY(0);
}
.sixs{
    position: relative;
    overflow: hidden;
    width: 90vw;
    aspect-ratio: 0.669/1;
    left:50%;
    transform: translateX(-50%);
}
.sixs img{
    position: absolute;
    width: 100%;
    height: auto;
    display: block;
    top: 0;
    left: 0;

}
.sevs{
    position: relative;
    overflow: hidden;
    width: 90vw;
    aspect-ratio: 1992/2718;
    left:50%;
    transform: translateX(-50%);
}
.sevs img{
    position: absolute;
    width: 100%;
    height: auto;
    display: block;
    top: 0;
    left: 0;

}
.img-inset {
  border-radius: 12px;
  box-shadow: 
    inset 4px 4px 10px rgba(0, 0, 0, 0.2),   /* 右下暗影 */
    inset -4px -4px 10px rgba(255, 255, 255, 0.5); /* 左上高光 */
}
@keyframes moveWaves {
  0% {
    transform: translateX(0%);
  }

  100% {
    transform: translateX(-100%);
  }
}