:root {
    /* 默认 1920 像素的宽度 */
    --sub-title-size: 32px;
}

@media screen and (max-width: 1440px) {
    :root {
        --sub-title-size: 26px;
    }
}

.container {
    position: relative;
    width: 100%;
    height: 100vh;
    font-family: SFProDisplay, SFProDisplay;
}

.flex {
    display: flex;
    display: -webkit-flex;
}

.flex.ac {
    align-items: center;
}

.flex.jc {
    justify-content: center;
}

.flex.js {
    justify-content: space-between;
}

.swiper {
    width: 100%;
    height: 100%;
    user-select: none;
}

/* header */
.header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding-top: 43px;
    padding-left: 162px;
    box-sizing: border-box;
    z-index: 10;
}

.header .logo img {
    display: block;
    width: 116px;
    height: 116px;
}

.header .nav {
    padding-left: 51px;
}

.header .nav li a {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-width: 124px;
    height: 43px;
    font-size: 24px;
    color: #FFFFFF;
    line-height: 29px;
    padding: 0 24px;
    margin-right: 36px;
    box-sizing: border-box;
}

.header.active .nav li a {
    color: #4e4e4e;
    mix-blend-mode: difference;
}

.header .nav li.active a {
    color: #FFFFFF;
    border-radius: 40px;
    background-image: linear-gradient(90deg, #0BABFE, #930AFF);
}


/* Swiper */
.swiper {
    --swiper-pagination-right: 51px;
    --swiper-pagination-bullet-vertical-gap: 15px;
}

.swiper .swiper-pagination-bullet {
    width: 22px;
    height: 22px;
    border-radius: 11px;
    background-color: #7E7E7E;
    opacity: 1;
    transition: all 0.3s;
}

.swiper .swiper-pagination-bullet.swiper-pagination-bullet-active {
    height: 58px;
    background-color: #00ABFF;
}

.swiper .swiper-button-next {
    top: unset;
    bottom: 35px;
    right: 50%;
    transform: translateX(50%);
    width: 82px;
    height: 82px;
    background-image: url('../images/icon_down.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
}

.swiper .swiper-button-next::after {
    content: none;
}

.swiper .swiper-button-next.swiper-button-disabled {
    display: none;
}

.swiper .swiper-slide {
    height: 100%;
}

.swiper .swiper-slide::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/bg1.png');
    background-size: 100% auto;
    background-position: center bottom;
    background-repeat: no-repeat;
    pointer-events: none;
}

/* page1 */
.page1 {
    background-image: url('../images/page1.png');
    background-size: cover;
    background-position: center;
}

.page1 {
    padding-top: calc(50vh - 145px);
    box-sizing: border-box;
}

.page1 h4 {
    text-align: center;
    font-weight: bold;
    font-style: italic;
    font-size: 100px;
    color: #FFFFFF;
    line-height: 119px;
}

.page1 h4 em {
    font: inherit;
    color: #0BAAFE;
}

.page1 .download {
    padding-top: 78px;
}

.page1 .download .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 368px;
    height: 96px;
    font-weight: bold;
    font-size: 24px;
    color: #FFFFFF;
    line-height: 33px;
    border-radius: 50px;
    border: 1px solid #FFFFFF;
    background-color: #00000070;
    cursor: pointer;
}

.page1 .download .btn:nth-child(1) {
    margin-right: 149px;
}

.page1 .download img {
    width: 48px;
    height: 48px;
    margin-right: 9px;
}

.page1 .description {
    position: absolute;
    left: 50%;
    bottom: 130px;
    transform: translateX(-50%);
    text-align: center;
    width: 100%;
    font-size: 40px;
    color: #FFFFFF;
    line-height: 48px;
}

/* page2 */
.page2::before {
    z-index: 1;
}

.page2 .box {
    height: 100%;
    padding-bottom: 12px;
    box-sizing: border-box;
}

.page2 .images img {
    width: 19vw;
    height: auto;
    margin-right: 30px;
}

.page2 .images img:last-child {
    margin-right: 0;
}

/* page3 */
.page3.swiper-slide::before {
    bottom: calc(50px - 1px);
    z-index: 1;
}

.page3 .box {
    height: calc(100% - 50px);
    padding: 0 12%;
}

.page3 .left,
.page3 .right {
    position: relative;
    flex-direction: column;
    justify-content: center;
    width: 32%;
    height: max-content;
    padding-top: 50px;
}


.page3 .left img,
.page3 .right img {
    width: 100%;
    /* height: 80%; */
}

.page3 .popover {
    position: absolute;
    right: -30%;
    bottom: 15%;
    width: 90%;
    padding: 3% 10% 5%;
    border-radius: 38px;
    box-sizing: border-box;
    background-image: linear-gradient(90deg, #00B5FFC0, #8E0FFDC0);
}

.page3 .right .popover {
    right: unset;
    left: -45%;
}

.page3 .popover h5 {
    font-weight: bold;
    font-size: var(--sub-title-size);
    color: #FFFFFF;
    margin-bottom: 11px;
}

.page3 .popover p {
    font-size: calc(var(--sub-title-size) * 0.8);
    color: #FFFFFF;
}

.page3 .footer {
    position: relative;
    text-align: center;
    width: 100%;
    height: 50px;
    font-size: 24px;
    color: #FFFFFF;
    line-height: 29px;
    background-color: #9409FE;
}

/* 提示框 */
.message {
    width: fit-content;
    max-width: calc(100% - 32px);
    box-sizing: border-box;
    border-radius: 4px;
    border-width: 1px;
    border-style: solid;
    border-color: #e9e9eb;
    position: fixed;
    left: 50%;
    top: 20px;
    transform: translate(-50%, calc(-100% - 30px));
    background-color: #f4f4f5;
    transition: opacity .4s, transform .4s;
    padding: 11px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1000;
    opacity: 0;
}

.message.active {
    transform: translate(-50%);
    opacity: 1;
}

.message__icon {
    width: 16px;
    height: 16px;
    color: #909399;
}

.message__content {
    font-size: 16px;
    color: #909399;
    overflow-wrap: break-word;
}