body{
    background-color: #1B1B1B;
}
.header_container{
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: #000;
    overflow: hidden;
}
/* 确保视频铺满整个 header_container */
.header_container .header_video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}
.header_container .title{
    position: absolute;
    z-index: 2;
    bottom: 9vh;
    color: #D6020F;
    font-size: 9.323vw;
    font-weight: bold;
    /* 新增居中代码 */
    left: 0;
    right: 0;
    text-align: center;
    line-height: 1;
}

/* Swiper 占满全屏 */
.header_container .header_swiper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.header_container .swiper-slide {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
}

/* 媒体包装容器与元素（图片和视频铺满覆盖） */
.header_container .media_wrapper,
.header_container .header_media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 视频封面遮罩层 */
.header_container .video_poster_overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.header_container .video_poster_overlay.is_playing {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.header_container .video_poster_overlay .poster_img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 🌟 固定标题：层级置顶，穿透点击 */
.header_container .title {
    position: absolute;
    z-index: 10;
    bottom: 9vh;
    left: 0;
    right: 0;
    text-align: center;
    color: #D6020F;
    font-size: 9.323vw;
    font-weight: bold;
    line-height: 1;
    pointer-events: none; /* 避免挡住下方轮播拖动交互 */
}

/* 轮播底部分页指示点 */
.header_pagination {
    position: absolute;
    bottom: 3vh !important;
    z-index: 10;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.header_pagination .swiper-pagination-bullet {
    width: 30px;
    height: 3px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.35);
    opacity: 1;
    margin: 0 !important;
    transition: all 0.3s ease;
}

.header_pagination .swiper-pagination-bullet-active {
    background: #D6020F;
    width: 55px;
}

/* 隐藏目标区域的原生鼠标 */
.swiper_container,
.swiper_container * {
    cursor: none; 
}

/* 自定义鼠标容器 */
.custom_cursor {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none; /* 穿透鼠标事件，防止遮挡下方元素点击 */
    z-index: 9999;
    will-change: transform, opacity;
    display: flex;
    justify-content: center;
    align-items: center;
    
    /* ⬇️ 新增：CSS 初始状态直接隐藏并缩小，防止页面加载时闪烁 ⬇️ */
    opacity: 0;
    transform: scale(0.2);
}

/* 在这里控制图片的大小 */
.custom_cursor img {
    width: 80px; 
    height: auto;
    object-fit: contain;
}

.swiper_container{
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    /* background-color: #070707; */
        /* 
       ellipse: 指定为椭圆形
       at 60% 50%: 渐变中心点的位置（水平 60%，垂直 50%），使其稍微偏右，贴合摩托车的位置
       #222222: 中心较亮区域的颜色
       #070707: 四角及边缘的暗色
    */
    background: radial-gradient(ellipse at 60% 50%, #434343 0%, #070707 75%, #070707 100%);
}
.swiper_container .width_limit{
    position: relative;
    width:100%;
    height: 82%;
    display: flex;
    justify-content: space-between;
}
.swiper_container .list_swiper {
    position: absolute;
    z-index: 2;
    height: 100%;
    margin-left: 6.5%;
    color: #C9C9C9;
    line-height: 1;
    font-size: 5.5vw;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.swiper_container .list_swiper .hover_container{
    position: relative;
    height: 90%;
    overflow: hidden;
    /* background-color: #222; */
    display: flex;
    flex-direction: column;
}
.swiper_container .list_swiper .hover_container .item {
    position: relative;
    /* flex 缩写代表: flex-grow: 1; flex-shrink: 1; flex-basis: 0%; */
    flex: 1 1 0%; 
    height: 0; /* 显式设置高度为 0，防止内部大尺寸内容撑开 item 从而破坏均分 */
    overflow: hidden; /* 防止内部溢出的内容影响布局 */
    transition: flex .5s;
}
.swiper_container .list_swiper .hover_container .item_active {
    flex: 1.4 1 0%; 
}
.swiper_container .list_swiper .type{
    font-size: 10vh;
    font-weight: bold;

    color: rgba(201, 201, 201, 0);
    text-stroke: 1px #C9C9C9;
    -webkit-text-stroke: 1px #C9C9C9;
    transition: color .5s;
}
.swiper_container .list_swiper .Introduction{
    font-size: 3vh;
    color: #595959;
    overflow: hidden;
    line-height: 0;
    opacity: 0;
    transition: all .5s;
}
.swiper_container .list_swiper .hover_container .item_active .type{
    color: #C9C9C9;
}
.swiper_container .list_swiper .hover_container .item_active .Introduction{
    opacity: 1;
    line-height: 1;
}
.swiper_container .list_swiper .more_btn_container {
    display: flex;
}
.swiper_container .list_swiper .more_btn {
    color: #DCDCDC;
    font-size: 1.9vh;
    box-sizing: border-box;
    line-height: 1;
    display: flex;
    align-items: center;
    padding: 1.2vh 1.8vh;
    border-radius: 0.3vw;
    background-color: rgba(255, 0, 0, 0.4);
    letter-spacing: 0.1vw;
    transition: background-color .3s;
}
.swiper_container .list_swiper .more_btn:hover{
    background-color: rgba(255, 0, 0, 0.6);
}
.swiper_container .list_swiper .more_btn .gsticon{
    font-size: 1.5vh;
    margin-left: 0.84vw;
}
.swiper_container .image_swiper{
    position: absolute;
    z-index: 1;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    -webkit-mask-image: linear-gradient(to right, 
        transparent 0%, 
        black 15%, 
        black 90%,
        transparent 100%
    );
    mask-image: linear-gradient(to right, 
        transparent 0%, 
        black 15%, 
        black 90%,
        transparent 100%
    );
}
.swiper_container .image_swiper .swiper {
    width: 100%;
    height: 100%;
    margin: 0;
}
.swiper_container .image_swiper .swiper .swiper-slide{
    display: flex;
    align-items: center;
    justify-content: flex-end;
}
.swiper_container .image_swiper .swiper .swiper-slide .outer_url{
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}
.swiper_container .image_swiper .swiper .swiper-slide .product_img{
    width: 70%;
    object-fit: contain;
}

.video_container{
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: #1B1B1B;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 5vw;
}
.video_container .cover_img{
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: contain;
    scale: 0.5;
}
/* ==========================================
   视频容器 (video_container) 封面及播放按钮样式
   ========================================== */
.video_container .video_wrapper {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video_container .promote_video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* 封面遮罩层 */
.video_container .video_poster_overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* 播放后隐藏封面 */
.video_container .video_poster_overlay.is_playing {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.video_container .video_poster_overlay .poster_img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 播放按钮 */
.video_container .video_poster_overlay .play_btn {
    position: relative;
    z-index: 3;
    width: 5vw;
    height: 5vw;
    min-width: 50px;
    min-height: 50px;
    background-color: rgba(214, 2, 15, 0.9);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.video_container .video_poster_overlay:hover .play_btn {
    transform: scale(1.15);
    background-color: rgba(255, 0, 0, 1);
}

.video_container .video_poster_overlay .play_btn::after {
    content: "";
    display: block;
    margin-left: 0.4vw;
    border-style: solid;
    border-width: 0.9vw 0 0.9vw 1.5vw;
    border-color: transparent transparent transparent #ffffff;
}
.news_event_container{
    position: relative;
    background-color: #1B1B1B;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
    margin-top: 6vw;
    margin-bottom: 16vw;
}
.news_event_container .title{
    position: relative;
    z-index: 2;
    color: #CCCCCC;
    font-size: 12vw;
    line-height: 1;
}
.news_event_container .shadow_text{
    position: absolute;
    z-index: 1;
    color: #CCCCCC;
    font-size: 12vw;
    line-height: 1;

    color: rgba(204, 204, 204, 0);
    text-stroke: 2px #CCCCCC;
    -webkit-text-stroke: 2px #CCCCCC;
    box-sizing: border-box;
}
.news_event_container .shadow_1{
    opacity: 0.5;
}
.news_event_container .shadow_2{
    opacity: 0.3;
}
.news_event_container .shadow_3{
    opacity: 0.1;
}
.news_container{
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* background-color: #1B1B1B; */
    background: linear-gradient(to bottom, #1B1B1B ,#030303);
    padding-bottom: 5vw;
}
.news_container .news_type_container{
    width: 93%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}
.news_container .news_type_container .type_btn{
    color: #404040;
    font-size: 1.25vw;
    margin-left: 3.8vw;
    font-family: none;
    font-weight: bold;
    transition: color .3s;
}
.news_container .news_type_container .type_btn::after{
    content: "";
    display: block;
    width: 0%;
    height: 2px;
    margin-top: 0.2vw;
    background-color: #D6020F;
    transition: width .3s;
}
.news_container .news_type_container .type_btn:hover{
    color: #777;
}
.news_container .news_type_container .type_btn:hover::after{
    width: 100%;
}
.news_container .news_type_container .type_btn_active{
    color: #CCCCCC !important;
}
.news_container .news_type_container .type_btn_active::after{
    width: 100%;
}
.news_container .news_title_container{
    position: absolute;
    z-index: 2;
    width: 20%;
    top: 4.7vw;
    left: 6vw;
}
.news_container .news_list_container .swiper{
    width: 100%;
    height: 85vh;
}
.news_container .news_list_container .swiper .container{
    position: absolute;
    z-index: 1;
    left: 7.56%;
    top: 0;
    width: 65%;
    clip-path: polygon(0% 0%, 0% 0%, 0% 100% , 0% 100% , 0% 0%);
    /* clip-path: polygon(0% 0%, 100% 0%, 100% 100% , 0% 100% , 0% 0%); */
    transition: all .5s;
    transform: translateY(50%);
    opacity: 0;
}
.news_container .news_list_container .swiper .swiper-slide_active .container{
    clip-path: polygon(0% 0%, 100% 0%, 100% 100% , 0% 100% , 0% 0%);
    transform: translateY(0%);
    opacity: 1;
}
.news_container .news_list_container .swiper .title{
    color: #DCDCDC;
    font-size: 1.875vw;
    font-weight: bold;
    font-family: none;
}
.news_container .news_list_container .swiper .text{
    color: #DCDCDC;
    font-size: 0.938vw;
    font-family: none;
    margin: 2.2vw 0;
}
.news_container .news_list_container .swiper .more_btn_container {
    display: flex;
}
.news_container .news_list_container .swiper .more_btn {
    color: #DCDCDC;
    font-size: 0.938vw;
    box-sizing: border-box;
    line-height: 1;
    display: flex;
    align-items: center;
    padding: 0.78vw 0.938vw;
    border-radius: 0.3vw;
    background-color: rgba(255, 0, 0, 0.4);
    letter-spacing: 0.1vw;
    font-family: none;
    transition: background-color .4s;
}
.news_container .news_list_container .swiper .more_btn:hover{
    background-color: rgba(255, 0, 0, 0.6);
}
.news_container .news_list_container .swiper .more_btn .gsticon{
    font-size: 0.8vw;
    margin-left: 1.25vw;
}

.news_container .news_list_container{
    width: 93%;
    margin-top: 7.6vh;
}
.news_container .news_list_container .swiper .card_container{
    position: absolute;
    width: 100%;
    height: 97%;
    overflow: hidden;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}
.news_container .news_list_container .swiper .card_container .news_img{
    position: relative;
    width: 100%;
    height: 100%;
    object-fit: cover;
    -webkit-mask-image: linear-gradient(to bottom, 
        transparent 3%, 
        black 50%
    );
    mask-image: linear-gradient(to bottom, 
        transparent 3%, 
        black 50%
    );
    transition: scale 1s;
}
.news_container .news_list_container .swiper .card_container:hover .news_img{
    scale: 1.05;
}
.network_container{
    position: relative;
    width: 100%;
    height: 2400px;
    background-color: #1B1B1B;
}
.network_container .scene_container{
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: #030303;
    display: flex;
    justify-content: center;
    /* align-items: center; */
    overflow: hidden;
}
.network_container .pin-spacer{
    background-color: #1B1B1B;
}
.network_container .scene_container .network_title {
    position: absolute;
    z-index: 1;
    top: 12vh;
    font-size: 21vh;
    text-align: center;
    line-height: 1;
    user-select: none;
    pointer-events: none;
    /* 确保绝对定位元素撑满宽度，以便“中间底部”定位准确 */
    width: 100%;
    left: 0;
  
    /* 设置径向渐变：从底部中心（at bottom 或 at 50% 100%）开始 */
    background-image: radial-gradient(ellipse at bottom, transparent 18%, #DCDCDC 50%);
  
    /* 将背景裁剪到文字上 */
    -webkit-background-clip: text;
    background-clip: text;
  
    /* 将文字本身颜色设为透明，使背景渐变显示出来 */
    -webkit-text-fill-color: transparent;
    color: transparent; /* 浏览器不支持时的回退方案 */
  }

#webgl_container{
    position: absolute;
    top: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    cursor: grab;
    /* 🌟 新增：使用 mask-image 直接对地球进行底部弧形裁剪 */
    -webkit-mask-image: radial-gradient(ellipse 120% 100% at 50% 120%, transparent 60%, black 90%);
    mask-image: radial-gradient(ellipse 120% 100% at 50% 120%, transparent 60%, black 90%);
}

/* 关键：将内部的 canvas 绝对定位，防止它撑大父容器 */
#webgl_container canvas {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
}

/* .transparent_container {
    position: absolute;
    z-index: 2;
    width: 100%;
    height: 58vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    bottom: 0;
    pointer-events: none !important;
}
.transparent_container::before {
    position: absolute;
    content: "";
    width: 200%;
    height: 100%;
    border-radius: 100% 100% 0 0;
    background: radial-gradient(ellipse 50% 100% at 50% 100%, #030303 50%, transparent 100%);
} */
.network_container .scrolling_text_list_container{
    position: absolute;
    z-index: 2;
    top: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    user-select: none;
    pointer-events: none;
}
.network_container .scrolling_text_list_container .main_title{
    font-size: 6vh;
    font-family: none;
    margin-bottom: 7.6vh;
    color: rgba(204, 204, 204, 0);
    background: linear-gradient(0deg, rgba(255,255,255,0) 0%,#D7D7D7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;

}
.network_container .scrolling_text_list_container .item{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 5vh;
}
.network_container .scrolling_text_list_container .item .title{
    font-size: 4.3vh;
    font-family: none;
    color: #D0D0D0;
}
.network_container .scrolling_text_list_container .item .data .number{
    font-size: 6vh;
    font-weight: bold;
    font-family: none;
    color: rgba(204, 204, 204, 0);
    background: linear-gradient(0deg, rgba(255,255,255,0) 0%,#D7D7D7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.network_container .scrolling_text_list_container .item .data .text{
    font-size: 4.3vh;
    font-family: none;
    color: rgba(204, 204, 204, 0);
    background: linear-gradient(0deg, rgba(255,255,255,0) 0%,#D7D7D7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.footer_container{
    background: linear-gradient(to bottom, #030303, #1B1B1B);
}


@media (max-width:996px) {
    .header_container .title{
        font-size: 10.111vh;
        text-align: left;
        left: 2.219vh;
        right: auto;
    }
    .header_container .title {
        font-size: 10.111vh;
        text-align: left;
        left: 2.219vh;
        right: auto;
        bottom: 8vh;
    }

    .header_pagination {
        bottom: 2.5vh !important;
    }

    .header_pagination .swiper-pagination-bullet {
        width: 18px;
    }

    .header_pagination .swiper-pagination-bullet-active {
        width: 36px;
    }

    /* 移动端播放按钮遮罩层 */
    .header_container .mobile_video_poster {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .header_container .mobile_video_poster .poster_img {
        filter: brightness(0.7);
    }

    .header_container .mobile_video_poster .play_btn {
        position: relative;
        z-index: 3;
        width: 16vw;
        height: 16vw;
        background-color: rgba(214, 1, 14, 0.9);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
        cursor: pointer;
        opacity: 0;
        transform: scale(0.5);
        pointer-events: none;
        transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    .header_container .mobile_video_poster .play_btn.show {
        opacity: 1;
        transform: scale(1);
        pointer-events: auto;
    }

    .header_container .mobile_video_poster .play_btn::after {
        content: "";
        display: block;
        margin-left: 1.5vw;
        border-style: solid;
        border-width: 3vw 0 3vw 5vw;
        border-color: transparent transparent transparent #ffffff;
    }
    
    /* 1. 调整容器高度自适应，改为垂直布局 */
    .swiper_container {
        height: auto;
        /* min-height: 90vh; */
        padding: 6vh 0;
        box-sizing: border-box;
    }
    .swiper_container,
    .swiper_container * {
        cursor: auto; 
    }
    .custom_cursor {
        display: none !important;
    }
    .swiper_container .width_limit {
        flex-direction: column;
        height: auto;
        justify-content: flex-start;
        align-items: center;
    }

    /* 2. 列表在上：重置定位与边距，使内容居中 */
    .swiper_container .list_swiper {
        position: relative;
        z-index: 2;
        margin-left: 0;
        width: 90%;
        height: auto;
        font-size: 8vw;
        align-items: flex-start;
        text-align: center;
        margin-bottom: 4vh;
    }

    /* 3. 实现只有一个 item 随着图片切换而显示：隐藏其他项 */
    .swiper_container .list_swiper .hover_container {
        height: auto;
        width: 100%;
        display: block;
    }
    
    .swiper_container .list_swiper .hover_container .item {
        display: none; /* 默认隐藏所有项 */
        height: auto;
        flex: none;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .swiper_container .list_swiper .hover_container .item.item_active {
        display: flex; /* 仅展示激活项 */
    }

    .swiper_container .list_swiper .type {
        font-size: 5vh;
        font-weight: 600;
        text-align: center;
    }

    .swiper_container .list_swiper .Introduction {
        font-size: 2vh;
        text-align: center;
        margin-top: 1.5vh;
        margin-bottom: 2.5vh;
    }

    .swiper_container .list_swiper .more_btn_container {
        justify-content: center;
    }
    .swiper_container .list_swiper .more_btn .gsticon{
        font-size: 14px;
    }
    /* 4. 图片在下：重置定位与高度 */
    .swiper_container .image_swiper {
        position: relative;
        z-index: 1;
        width: 100%;
        height: auto;
        margin-top: 2vh;
    }

    .swiper_container .image_swiper .swiper .swiper-slide {
        justify-content: center;
    }

    .swiper_container .image_swiper .swiper .swiper-slide .product_img {
        width: 85%; /* 调高图片占比 */
    }

    /* 5. 移动端按钮样式 */
    .mobile_swiper_controls {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 4vh;
        width: 100%;
    }

    .mobile_swiper_controls .gsticon {
        width: 8vw;
        height: 8vw;
        background-color: #333333; /* 默认暗灰背景 */
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 4px;
        color: #ffffff;
        font-size: 3.6vw;
        cursor: pointer;
        transition: background-color 0.3s;
    }
    .mobile_swiper_controls .btn_prev {
        transform: rotate(180deg);
    }
    /* 让右边/后一个按钮呈现深红色 */
    .mobile_swiper_controls .btn_next {
        background-color: #8B0000; 
    }
    .video_container{
        height: 90vw;
    }
    .video_container .video_poster_overlay .play_btn {
        width: 15vw;
        height: 15vw;
        min-width: unset;
        min-height: unset;
    }
    .video_container .video_poster_overlay .play_btn::after {
        margin-left: 1.2vw;
        border-width: 2.5vw 0 2.5vw 4vw;
    }
    .news_event_container{
        margin-top: 0;
        margin-bottom: 26vw;
    }
    .news_event_container .title{
        font-size: 15vw;
    }
    .news_event_container .shadow_text{
        font-size: 15vw;
    }
    .news_container{
        height: auto;
    }
    .news_container .news_type_container{
        justify-content: space-around;
    }
    .news_container .news_type_container .type_btn{
        font-size: 3.59vw;
        margin-left: 0;
    }
    .news_container .news_list_container .swiper{
        width: 100%;
        height: 50vh;
    }
    .news_container .news_list_container .swiper .container{
        width: 70%;
        opacity: 1;
        top: 4%;
        transform: translateY(0%);
        clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%, 0% 0%);
    }
    .news_container .news_list_container .swiper .title{
        font-size: 4vw;
    }
    .news_container .news_list_container .swiper .text{
        font-size: 3.8vw;
    }
    .news_container .news_list_container .swiper .more_btn{
        font-size: 3.8vw;
        padding: 2.5vw;
        border-radius: 1.3vw;
    }
    .news_container .news_list_container .swiper .more_btn .gsticon{
        font-size: 3vw;
    }
    .network_container .scene_container .network_title{
        top: 26.7vh;
        font-size: 6.5vh;
    }
    .transition_div_1{
        height: 4vh;
    }
    /* .transparent_container{
        height: 78vh;
    }
    .transparent_container::before{
        width: 400%;
        background: radial-gradient(ellipse 50% 100% at 50% 100%, #030303 50%,#030303bc 69%, transparent 78%);
    } */
    
    #webgl_container{
        height: 69vh;
        top: 25.5vh;
        pointer-events: none;
        /* 🌟 移动端专属 mask-image 调整，适应扁平的屏幕 */
        -webkit-mask-image: radial-gradient(ellipse 180% 100% at 50% 115%, transparent 74%, black 95%,black 110%, transparent 115%);
        mask-image: radial-gradient(ellipse 180% 100% at 50% 115%, transparent 74%, black 95%,black 110%, transparent 115%);
    }
    .network_container .scrolling_text_list_container .main_title{
        font-size: 3vh;
    }
    .network_container .scrolling_text_list_container .item .title{
        font-size: 2.5vh;
    }
    .network_container .scrolling_text_list_container .item .data .number{
        font-size: 3vh;
    }
    .network_container .scrolling_text_list_container .item .data .text{
        font-size: 2.5vh;
    }

    .footer_container{
        position: absolute;
        transform: translateY(-100%);
        background: linear-gradient(to bottom, transparent, #000);
    }
    .sub_contact_footer_container{
        position: relative !important;
        transform: translateY(0%) !important;
        background: #1b1b1b !important;
    }
    /* === 新增：首页移动端视频封面层 === */
    .header_container .mobile_video_poster {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 2; /* 覆盖在视频之上，但在 title 之下 */
        display: flex !important;
        justify-content: center;
        align-items: center;
        background-color: #1B1B1B;
        transition: opacity 0.5s ease, visibility 0.5s ease;
    }

    .header_container .mobile_video_poster.is_playing {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }

    .header_container .mobile_video_poster .poster_img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        filter: brightness(0.5); 
    }

    /* 纯 CSS 播放按钮（默认处于隐藏状态） */
    .header_container .mobile_video_poster .play_btn {
        position: relative;
        z-index: 3;
        width: 16vw;
        height: 16vw;
        background-color: rgba(214, 1, 14, 0.9);
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
        cursor: pointer;
        opacity: 0;
        transform: scale(0.5);
        pointer-events: none;
        transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }

    /* JS 检测失败时，弹出按钮并执行呼吸动画 */
    .header_container .mobile_video_poster .play_btn.show {
        opacity: 1;
        transform: scale(1);
        pointer-events: auto;
        animation: playPulse 2s infinite 0.4s; 
    }

    .header_container .mobile_video_poster .play_btn::after {
        content: "";
        display: block;
        margin-left: 1.5vw;
        border-style: solid;
        border-width: 3vw 0 3vw 5vw;
        border-color: transparent transparent transparent #ffffff;
    }

    /* 提高底部标题层级，避免被封面挡住 */
    .header_container .title {
        z-index: 5;
    }

    @keyframes playPulse {
        0% { box-shadow: 0 0 0 0 rgba(214, 1, 14, 0.7); }
        70% { box-shadow: 0 0 0 4vw rgba(214, 1, 14, 0); }
        100% { box-shadow: 0 0 0 0 rgba(214, 1, 14, 0); }
    }
}