.project .banner {
    width: 100%;
    position: relative;
}
.project .banner .logo {
    width: 150px;
    position: absolute;
    top: 45px;
    left: 45px;
    z-index: 5;
}
.project .banner h2 {
    position: absolute;
    top: 46%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    z-index: 10;
    font-size: 135px;
    font-weight: 900;
    text-align: center;
    color: #fff;
    line-height: 1.2;
}
.project .banner h2 span {
    margin: 0 auto;
    width: -webkit-fit-content;
    width: -moz-fit-content;
    width: fit-content;
    display: block;
    font-size: 27px;
    font-weight: 500;
    line-height: 1.25;
    letter-spacing: 2.7px;
    text-align: center;
    color: #fff;
    position: relative;
}
.project .banner h2 span::after {
    position: absolute;
    content: "";
    width: 0%;
    height: 1px;
    background: #fff;
    left: 0;
    bottom: -3px;
    -webkit-animation: lineAnimation 4.25s linear infinite forwards;
    animation: lineAnimation 4.25s linear infinite forwards;
}
@-webkit-keyframes lineAnimation {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}
@keyframes lineAnimation {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}
.project .banner .scrolldown {
    position: absolute;
    left: 50%;
    bottom: 0%;
    -webkit-transform: translate(-50%, -40%);
    transform: translate(-50%, -40%);
    width: 112.5px;
    height: 112.5px;
    border-radius: 50%;
    z-index: 10;
    background: linear-gradient(125deg, #004F6F 0% 60%, #79C38D);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-transform-origin: 50% 50%;
    transform-origin: 50% 50%;
}
.project .banner .scrolldown .pic {
    position: relative;
    width: 15px;
}
.project .banner .scrolldown::after {
    position: absolute;
    content: "";
    background-image: url(../images/scrolldown.svg);
    background-repeat: no-repeat;
    width: 150px;
    height: 150px;
    left: 50%;
    top: 50%;
    -webkit-animation: scrollAnimation 14s linear infinite;
    animation: scrollAnimation 14s linear infinite;
    -webkit-transform-origin: center center;
    transform-origin: center center;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.project .banner .image-container {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    position: relative;
    overflow: hidden;
}
.project .banner .image-container.animation {
    -webkit-animation: scaleAnimation 8s linear infinite forwards;
    animation: scaleAnimation 8s linear infinite forwards;
}
@-webkit-keyframes scaleAnimation {
    0% {
        -webkit-transform: scale(1.2);
        transform: scale(1.2); /* 初始状态放大 */
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1); /* 中间状态正常大小 */
    }
}
@keyframes scaleAnimation {
    0% {
        -webkit-transform: scale(1.2);
        transform: scale(1.2); /* 初始状态放大 */
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1); /* 中间状态正常大小 */
    }
}
@-webkit-keyframes scrollAnimation {
    0% {
        -webkit-transform: translate(-50%, -50%) rotate(0deg);
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        -webkit-transform: translate(-50%, -50%) rotate(360deg);
        transform: translate(-50%, -50%) rotate(360deg);
    }
}
@keyframes scrollAnimation {
    0% {
        -webkit-transform: translate(-50%, -50%) rotate(0deg);
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        -webkit-transform: translate(-50%, -50%) rotate(360deg);
        transform: translate(-50%, -50%) rotate(360deg);
    }
}
.project .banner .swiper-slide {
    height: 100vh;
    overflow: hidden;
}
.project .banner .swiper-slide-active .mask {
    top: 0;
    left: 0;
    position: absolute;
    height: 100%;
    background-image: -webkit-gradient(linear, left top, right top, from(#a8dcd1), to(#004F6F));
    background-image: linear-gradient(to right, #a8dcd1, #004F6F); /* 遮罩颜色 */
    -webkit-animation-iteration-count: 1;
    animation-iteration-count: 1;
    -webkit-animation: maskAnimation 0.5s ease-in-out;
    animation: maskAnimation 0.5s ease-in-out;
}
.project .banner .swiper-slide-active .mask1 {
    background-image: -webkit-gradient(linear, left top, right top, from(#004F6F), to(#ffdf80));
    background-image: linear-gradient(to right, #004F6F, #ffdf80); /* 遮罩颜色 */
}
@-webkit-keyframes maskAnimation {
    0% {
        width: 100%;
    }
    100% {
        width: 0;
    }
}
@keyframes maskAnimation {
    0% {
        width: 100%;
    }
    100% {
        width: 0;
    }
}
@media screen and (max-width: 980px) {
    .project .banner .logo {
        width: 100px;
        top: 15px;
        left: 30px;
    }
    .project .banner h2 {
        font-size: 18vw;
    }
    .project .banner h2 span {
        font-size: 3vw;
    }
    .project .banner .scrolldown {
        bottom: 10%;
        width: 80px;
        height: 80px;
    }
    .project .banner .scrolldown .pic {
        width: 15px;
    }
    .project .banner .scrolldown::after {
        width: 107.5px;
        height: 107.5px;
    }
}