html,
body {
    overflow-x: hidden;
    overflow-y: hidden;
    height: 100%;
}

header {
    background: none !important;
    border: none !important;
}

header nav a {
    color: #fff !important;
}

header nav.active a {
    color: #333 !important;
}

.fullpage-section {
    all: unset;
}

.fullpage-container {
    /* width: 100vw; */
    /* height: 100vh; */
    /* overflow-y: scroll; */
    scroll-snap-type: y mandatory;
}

/* 第一屏视频背景 */
.video-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: 0;
}

.section-content {
    position: relative;
    z-index: 1;
    width: 1280px;
    margin: 0 auto;
    text-align: left;
}

.section1-title {
    color: #fff;
    font-size: 48px;
    letter-spacing: 4px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    position: relative;
}
.section1-title .name{
    position: absolute;
    left: 480px;
    font-size: 28px;
}

.section1-desc {
    color: #fff;
    font-size: 28px;
    margin-bottom: 40px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.section5 {
    background: url(../images/index_news_bg.png) no-repeat;
    background-size: cover;
    overflow-x: hidden;
}

/* 第二屏时变黑色 */
.header.nav-black .nav a {
    color: #222 !important;
}

/* 第五屏新闻动态布局 */
.news-section5 {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding-top: 80px;
    overflow-x: hidden;
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.news-title {
    font-size: 38px;
    color: #222;
    font-weight: bold;
    margin: 0;
}

.news-more-btn {
    color: #1780d6;
    font-size: 14px;
    text-decoration: none;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.news-more-btn .arrow {
    display: inline-block;
    margin-left: 8px;
    font-size: 20px;
    background: #1780d6;
    color: #fff;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    text-align: center;
    line-height: 28px;
}

.news-list {
    display: flex;
    justify-content: space-between;
    flex-direction: row;
    gap: 40px;
}

.news-item {
    width: 360px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-bottom: none;
    box-shadow: none;
}

.news-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 18px;
}

.news-item-title {
    font-size: 20px;
    color: #222;
    font-weight: 500;
    margin-bottom: 12px;
}

.news-item-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 18px;
    overflow: hidden;
}

.news-item-date {
    font-size: 15px;
    color: #999;
    margin-bottom: 18px;
}

.news-item-line {
    width: 100%;
    height: 4px;
    background: #1780d6;
    border-radius: 2px;
    margin-top: auto;
}

/* 第六屏footer自适应高度，顶部留白显示部分第五屏 */
.footer-section {
    align-items: flex-start !important;
    justify-content: flex-start !important;
    height: auto !important;
}

.footer-section footer {
    width: 1280px !important;
    margin: 0 auto !important;
    display: flex !important;
    flex-direction:column !important;
}

.footer .container {
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
    flex: 1 !important;
}

.footer-bottom {
    margin-top: auto !important;
    padding: 12px 0 8px 0;
    flex-shrink: 0 !important;
}

.swiper {
    width: 100vw;
    height: 100vh;
}

.swiper-wrapper {
    width: 100vw;
    height: 100vh;
}

.swiper-slide {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* section1 视频背景和标题 */
.section1 {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.section1 .video-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: 0;
}

.section1 .section-content {
    position: relative;
    z-index: 1;
    width: 1280px;
    margin: 0 auto;
    text-align: left;
}

.section1-title {
    color: #fff;
    font-size: 54px;
    font-weight: bold;
    letter-spacing: 4px;
    margin-bottom: 24px;
    text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* section2 关于我们 */
.section2 {
    position: relative;
    width: 100vw;
    height: 100vh;
    background: url("../images/index_about_bg.png") no-repeat;
    background-size: 100% 100%;
    overflow: hidden;
}

.section2 .name {
    font-size: 38px;
}

.section2 .section-content {
    position: absolute;
    z-index: 3;
    width: 1280px;
    margin: 0 auto;
    text-align: center;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    z-index: 10;
}

.section2 .total {
    display: flex;
    justify-content: left;
    align-items: flex-end;
    gap: 60px;
    margin-bottom: 30px;
    text-align: left;
}

.section2 .item {
    min-width: 150px;
}

.section2 .item-name {
    font-size: 16px;
    color: #666;
    margin-bottom: 8px;
}

.section2 .num {
    font-size: 68px;
    color: #1780d6;
    font-weight: bold;
    line-height: 1;
}

.section2 .num span {
    font-size: 20px;
    color: #1780d6;
    font-weight: normal;
    margin-left: 2px;
}

.section2 .desc {
    color: #444;
    font-size: 16px;
    margin: 0 0 35px 0px;
    max-width: 700px;
    line-height: 2;
    text-align: left;
}

.more-btn {
    display: inline-block;
    background: url(../images/index_about_btn.png) no-repeat;
    color: #000;
    border-radius: 20px;
    padding: 0 22px;
    width: 160px;
    height: 45px;
    line-height: 45px;
    font-size: 14px;
    margin-top: 65px;
    transition: background 0.2s;
    text-indent: 25px;
    border: none;
    cursor: pointer;
    position: absolute;
    left: 0;
}

.section2 .house {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 1330px;
    height: 748px;
    opacity: 1;
    transform: none;
    z-index: 2;
    pointer-events: none;
}

.section2 .house.show {
    opacity: 1;
    transform: translateY(0);
}

.section2 .colude {
    position: absolute;
    bottom: 0;
    right: 100px;
    width: 1920px;
    height: 800px;
    z-index: 5;
    animation: cloud-move 4s ease-in-out infinite alternate;
    pointer-events: none;
    opacity: 1;
}

@keyframes cloud-move {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(60px);
    }
}

.section5 {
    background: url(../images/index_news_bg.png) no-repeat;
    background-size: cover;
}

.section3 {
    background: url(../images/index_hxjs_bg.png) no-repeat;
    background-size: cover;
}

.section4 {
    background: url(../images/index_product_bg.png) no-repeat;
    background-size: cover;
}

.section4 .section-content {
    padding-top: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.product-series {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    width: 100%;
}

.product-series-top{
    display: flex;
}

.product-info {
    flex: 1 1 40%;
    color: #22304a;
    padding-bottom: 60px;
}

.product-title {
    font-size: 38px;
    font-weight: 500;
    margin-bottom: 32px;
    letter-spacing: 2px;
}

.product-desc {
    font-size: 18px;
    line-height: 2;
    color: #22304a;
    opacity: 0.85;
}

.product-image-group {
    flex: 1 1 60%;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    position: relative;
}

.product-main-img {
    max-width: 420px;
    width: 90%;
    height: auto;
    margin-bottom: 32px;
    z-index: 2;
    transition: all 0.3s;
}

.product-thumbs {
    display: flex;
    gap: 24px;
    justify-content: space-between;
    width: 100%;
}

.product-thumbs .thumb {
    width: 200px;
    height: 200px;
    object-fit: contain;
    opacity: 0.6;
    cursor: pointer;
}

.product-thumbs .thumb.active,
.product-thumbs .thumb:hover {
    opacity: 1;
    border-color: #0277BD;
    box-shadow: 0 2px 8px rgba(2, 119, 189, 0.08);
}

/* section3~section5 内容居中 */
.section3,
.section4,
.section5 {
    width: 100vw;
    height: 100vh;
    display: flex !important;
    align-items: center;
    justify-content: center;
}

.section3 .section-content,
.section4 .section-content,
.section5 .news-section5 {
    width: 1280px;
    margin: 0 auto;
    text-align: left;
}

/* 技术核心模块样式 */
.section3 .name{
    font-size: 38px;
    color: #fff;
    margin-bottom: 100px;
}
.core-tech-container {
    display: flex;
    width: 100%;
    margin: 0 auto;
    max-width: 1280px;
    align-items: flex-start;
    justify-content: space-between;
    position: relative;
}
.core-tech-left-item{
    padding: 20px 20px 20px 0;
}
.core-tech-left-item.active{
    background:linear-gradient(to left,rgba(2,119,189,0.7),rgba(255,255,255,0))
}
.core-tech-left {
    width: 440px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-right: 40px;
    border-right: 1px solid rgba(255, 255, 255, 0.3);
}

.core-tech-tab {
    font-size: 22px;
    color: #fff;
    margin-bottom: 10px;
    cursor: pointer;
    transition: color 0.2s;
    letter-spacing: 2px;
}

.core-tech-desc {
    color: #e0e6f6;
    font-size: 14px;
    line-height: 2;
    margin-bottom: 32px;
    cursor: pointer;
}

.core-tech-more {
    display: inline-block;
    background: url(../images/index_about_btn2.png) no-repeat;
    color: #fff;
    border-radius: 20px;
    padding: 0 22px;
    width: 160px;
    height: 45px;
    line-height: 45px;
    font-size: 14px;
    margin-top: 65px;
    transition: background 0.2s;
    text-indent:25px;
    border: none;
    cursor: pointer;
}

.core-tech-more:hover {
    background: #1780d6;
    color: #fff;
}

.core-tech-right {
    height: 400px;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-items: center;
    justify-content: center;
}

.core-tech-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.core-tech-icon-item {
    width: 120px;
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.core-tech-icon-item img {
    width: 54px;
    height: 54px;
    margin-bottom: 18px;
    transition: transform 0.3s;
}

.core-tech-icon-item span {
    color: #fff;
    font-size: 14px;
    text-align: center;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.core-tech-icon-item:hover {
    
}

.core-tech-icon-item:hover img {
    
}

.core-tech-icon-item:hover span {
    color: #fffbe6;
}


@media screen and (max-width: 1024px) {
    .swiper-slide{
        height: auto !important;
    }
    .section1{
        height: 300px !important;
        margin-top:70px;
    }
    .section1 .video-bg{
        width: 100%;
        height: 100%;
    }
    .section1 .section-content{
        width: calc(100% - 20px);
    }
    .section1-title{
        font-size: 24px;
    }
    .section1-title .name{
        position: absolute;
        left: 182px;
        font-size: 18px;
    }
    .section2{
        height: 300px;
        position: unset;
        flex-direction: column;
    }
    .section2 .section-content{
        width: calc(100% - 20px);
        padding:0 10px;
        position:unset;
    }
    .section2 .name{
        font-size: 24px;
    }
    .section2 .total{
        flex-wrap: wrap;
    }
    .section2 .num{
        font-size: 36px;
    }
    .section2 .more-btn{
        left:10px;
    }
    .section2 .house{
        position: unset;
        width: 100%;
        height: auto;
        bottom: 0;
    }
    .section2 .colude{
        display: none;
    }
    .section3 .section-content{
        width: calc(100% - 20px);
        padding:0 10px;
    }
    .section3 .name{
        padding-top:30px;
        margin-bottom: 30px;
        font-size: 24px;
    }
    .core-tech-tab{
        font-size: 18px;
    }
    .core-tech-container{
        flex-direction: column;
    }
    .core-tech-left{
        width: 100%;
        border-right: none;
    }
    .core-tech-icon-item{
        width: 45%;
    }
    .core-tech-more{
        margin-top: 30px;
        margin-bottom: 30px;
    }
    .product-title{
        font-size: 24px;
    }
    .section4 .section-content{
        padding-top:30px;
    }
    .product-series{
        padding: 0 10px;
    }
    .product-series-top{
        flex-direction: column;
    }
    .news-title{
        font-size: 24px;
    }
    .product-main-img{
        margin: 0 auto;
    }
    .product-thumbs{
        gap: 5px;
    }
    .product-thumbs .thumb{
        width: 80px;
        height: 80px;
    }
    .news-list{
        flex-direction: column;
    }
    .news-item{
        width: 100%;
        padding: 0px;
    }
    .footer-bottom {
        padding: 0 10px;
        margin-bottom: 60px;
    }
}