* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    
  }
  li {
    list-style: none;
  }

    /* 默认样式 */
  html, body {
    margin: 0;
    padding: 0;
    width: 100%;
  }


  body {
    font: 14px/1.5 "SF Pro SC","HanHei SC","SF Pro Text","Myriad Set Pro","SF Pro Icons","PingFang SC","Helvetica Neue","Helvetica","Arial",sans-serif;
    color: #333;
    background-color: transparent;
    /* width: 1920px; */
    width: 100%;
  }
  .body {
    width: 100%;
  }
  a {
    
    color: #333;
    text-decoration: none;
  }
  h2, h3 {
    font-weight: normal;
  }
    
.header {
    width: 100%;
    height: 70px;
    
    position: fixed;
    top: 0;
    z-index: 1000;
    background-color: transparent;
    transition: all 0.3s ease;
    color: white;
}
.header.scrolled {
    color: #333;
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    
}
.nav {
    width: 100%;
    height: 100%;
    min-width: 1280px;
    display: flex;
    align-items: center;
    /* justify-content: space-between; /* 修改为space-between布局 */
    /* padding-right: 60px; 右侧padding */ 
}

.logo-container {
    display: flex;
    margin-left: 60px;
    width: 150px;
    height: 40px;
    min-width: 150px;
}
.logo-container img {
    filter: brightness(0) invert(1); /* 将logo转为白色 */
}

.header.scrolled .logo-container img {
    filter: none; /* 滚动后恢复原色 */
}
.nav-items {
    display: flex;
    flex: 1; /* 让导航项容器占据剩余空间 */
    justify-content: flex-start; /* 居中对齐 */
    align-items: center;
    margin-left: 220px; /* 调整左边距 */
    min-width: 1150px;
    /* margin-right: 100px; 为语言切换器预留空间 */
    gap: 25px;
    position: relative;
}

.nav-item {
    display: flex;
    position: relative;
    padding: 10px 14px;
    cursor: pointer;
    font-size: 16px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    color: inherit;
    overflow: visible;
    min-width: 100px;
    justify-content: center;
    white-space: nowrap;
    /* 新增：控制文本增长方向 */
    /* transform-origin: center left; 从左侧开始变化 */
}

.header.scrolled .nav-item {
    color: #333;
}
.nav-item a {
    color: white; /* 初始状态为白色文字 */
    text-decoration: none; /* 去掉下划线 */
    transition: color 0.3s ease; /* 添加过渡效果 */
}

.header.scrolled .nav-item a {
    color: #333; /* 滚动后变为黑色文字 */
}
.nav-item::after {
    content: '';
    position: absolute;
    left: -5px;
    right: -5px;
    bottom: -15px; /* 覆盖10px间隙 + 5px边框 */
    height: 15px;
    background: transparent;
    z-index: 1;
}
.nav-item:hover {
    transform-origin: left center; /* 确保hover效果从左侧开始 */
    background-color: rgba(0, 102, 204, 0.8);
    padding: 10px 14px;
    border: 1px solid #0066cc;
    background-color: #0066cc;
    border-radius: 5px
    
    
}
.nav-item.active-page {
    background-color: #0066cc;
    color: white; /* 或者其他高亮颜色 */
    border-radius: 5px; /* 可选，添加圆角 */
}

.nav-item.active-page a {
    color: white; /* 确保链接文字也是高亮的 */
}
.dropdown-content {
    width: 120px;
    display: block;
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%) scaleY(0); /* 初始垂直缩放为0 */
    transform-origin: top left; /* 从左侧开始展开 */
    /* transform-origin: top center; 设置缩放原点 */
    opacity: 0; /* 初始透明 */
    background-color: #ffffff;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    visibility: hidden; /* 防止初始状态可点击 */
    width: auto; /* 改为自适应宽度 */
    min-width: 140px; /* 设置最小宽度 */
    padding: 5px 0
    
}

.dropdown-content a {
    display: block;
    text-align: center;
    padding: 12px 16px;
    color: black;
    opacity: 0; /* 初始透明 */
    transform: translateY(-10px); /* 初始位置偏移 */
    transition: all 0.3s ease;
    white-space: nowrap; /* 防止文字换行 */
    padding: 12px 20px; /* 增加内边距 */
}

.dropdown-content a:hover {
    background-color: #f1f1f1;
}

.nav-item:hover .dropdown-content {
    transform: translateX(-50%) scaleY(1); /* 垂直缩放展开 */
    opacity: 1;
    visibility: visible;
    transition-delay: 0.1s; /* 容器延迟出现 */
}
.nav-item:hover .dropdown-content a {
    opacity: 1;
    transform: translateY(0);
}
.dropdown-content a:nth-child(1) { transition-delay: 0.15s; }
.dropdown-content a:nth-child(2) { transition-delay: 0.2s; }
.dropdown-content a:nth-child(3) { transition-delay: 0.25s; }
.dropdown-content a:nth-child(4) { transition-delay: 0.3s; }

/* Only show dropdown for 2nd and 4th items */
.nav-item:nth-child(2) .dropdown-content,
.nav-item:nth-child(4) .dropdown-content {
    visibility: hidden; /* 替换原来的display:none */
}

.nav-item:nth-child(2):hover .dropdown-content,
.nav-item:nth-child(4):hover .dropdown-content {
    visibility: visible; /* 替换原来的display:block */
}
.data-local {
    display: flex;
    align-items: center;
    position: relative; /* 修改为绝对定位 */
    right: 20px; /* 固定在右侧 */
    font-size: 14px;
    cursor: pointer; 
    transition: all 0.2s;
    gap: 5px;
    color: inherit;
    white-space: nowrap;
    margin-left: auto;
    margin-right: 0px;
}
.header.scrolled .data-local {
    color: #333;
}
.lang-btn {
    cursor: pointer;
    transition: color 0.3s ease;
}

.lang-btn.active {
    color: #0066cc;
    font-weight: bold;
}

.data-local span{
    font-size: 18px;
}
.data-local span.active {
    color: #0066cc;
    font-weight: bold;
}
.data-local em {
    margin: 0 5px;
    font-style: normal;
    font-size: 20px;
}

/* 尾部 */

    /* 底部大容器 */
    .footer {
        /* min-width: 1450px; */
        position: relative;
        width: 100%;
        height: 180px;
        /* min-height: 210px; */
        background-color: #3c6298; /* 绿色背景 */
        display: flex;
        align-items: center;
        /* padding: 0 20px; */
        z-index: 10;
    }

    /* Logo容器 */
    .logo-container-one {
        margin-left: 55px;
        margin-top: 55px;
        width: 150px;
        height: 120px;
        
        /* background: #fff; */
    }
    /* logo图片 */
    footer  img {
        display: block;
        width: 100%; 
        /* filter: brightness(0) invert(1); */
    }
    /* 中间内容区 */
    .content-middle {
        flex: 1;
        /* display: flex; */
        justify-content: center;
        /* min-width: 1200px; */
    }
    /* footer .content-middle .contact-info {
        padding-top: 10px;
    } */
    .contact-info {
      
        position: relative; /* 新增 */
        margin-bottom: 30px; /* 可选，防止底部空间不足 */
        
    }
    /* 联系信息样式 */
    .contact-info ul {
        list-style: none;
        padding: 0;
        /* margin: 0 50px; */
        display: flex;
        /* padding-left: 16px; */
        margin-left: 80px;
        
    }
    .contact-info li {
        color: white;
        margin: 20px;
        display: flex;
        align-items: center;
    }
    footer ul li .icon-box {
        width: 45px;
        height: 45px;
        border-radius: 50%;
        border: 1px solid #fff;
        position: relative;
    }
    footer ul li .icon-box img {
        width: 30px;  /* 自定义图片宽度 */
        height: 30px; /* 自定义图片高度 */
        object-fit: contain; /* 保持图片比例 */
    }

    /* 如果只需要修改特定图片，可以使用更具体的选择器 */
    footer ul li .icon-box .pos-center {
        width: 25px;  /* 更小尺寸示例 */
        height: 25px;
    }
    .pos-center {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    footer ul li .text-box {
        font-size: 16px;
        line-height: 25px;
        letter-spacing: 1px;
        color: #ffffff;
        margin-left: 10px;
        flex-wrap: wrap;
    }
    footer ul li:first-child {
        margin-right: 30px;
    }
    .contact-info ul li:nth-child(3) {
        margin-left: 30px; /* 新增左边距 */
    }
    /* footer ul li:first-child(3) .icon-box{
        margin-left: 30px;
    } */
    /* 右侧图标容器 */
    .icon-group {
        display: flex;
        gap: 15px;
        margin-right: 60px;
        margin-top: 30px;
        position: relative;
        margin-bottom: 30px;
    }

    .icon-wrapper {
        position: relative; /* Add relative positioning to wrapper */
    }

    .icon-group img {
        width: 40px;
        height: 40px;
        margin: 0 15px;
        cursor: pointer;
    }

    /* 悬浮容器的基本样式 */
    .hover-container {
        position: absolute;
        display: none;
        padding: 10px;
        background: white;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        border-radius: 8px;
        bottom: 100%; /* 改为从底部定位 */
        left: 50%;
        transform: translateX(-50%);
        z-index: 1000;
        width: 100px;
        margin-bottom: 12px; /* 添加与图标的间距 */
    }
    /* 添加向上的小箭头 */
.hover-container::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: transparent transparent transparent;
}

   /* 悬浮图片的样式 */
.hover-container img {
    width: 100px;
    height: 100px;
    margin: 0;
    display: block;
}
/* 显示悬浮容器 */
.icon-wrapper:hover .hover-container {
    display: block;
    animation: slide-up 0.3s ease; /* 添加向上滑动的动画 */
}


/* 自定义向上滑动动画 */
@keyframes slide-up {
    from {
        opacity: 0;
        transform: translate(-50%, 10px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

    /* 备案信息 */
    .record-info {
        font-size: 12px;
        position: absolute;
        bottom: 10px;
        width: 100%;
        text-align: center;
        color: white;
    }
    .record-info a {
        color: white;
        text-decoration: none;
        font-size: 12px;
    }

/* 在about.css中添加 */
:root {
    --nav-height: 80px; /* 根据实际导航栏高度修改 */
  }
  
  /* 现代浏览器方案 */
  :target {
    scroll-margin-top: var(--nav-height);
  }
  
  /* 传统浏览器兼容方案 */
  :target::before {
    content: "";
    display: block;
    height: var(--nav-height);
    margin-top: calc(-1 * var(--nav-height));
    visibility: hidden;
  }
  
  /* 响应式适配 */
  @media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }
  }
     
  .carousel p.subtitle {
    font-weight: bold;
    font-family: objectivity-black-slanted-2;
    font-size: 36px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 82%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
    position: absolute;
    top: 25%;
    left: 30%;
    transform: translateX(-50%);
    font-size: 190px;
    letter-spacing: 2px;
    animation: slideIn 1.2s ease-out forwards;
    animation-delay: 0.5s;
    z-index: 2;;
}
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-100%) translateX(-50%);
    }
    to {
        opacity: 1;
        transform: translateY(0) translateX(-50%);
    }
} 
        
         

        .smooth-wrapper {
            position: relative;
            height: 100vh;
            overflow: hidden;
        }

        /* Initial state: logo image visible without mask */
        .logo-container-img {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 5;
        }

        .logo-image {
            width: 110px;
            height: 60px;
        }

        /* Masked image that will expand on scroll */
        .img-box {
            width: 100%;
            height: 100%;
            position: absolute;
            /* opacity: 0; Initially hidden */
            -webkit-mask: url("./images/index/logo\(1\).png") center/contain;
            mask: url("./images/index/logo\(1\).png") center/contain;
            -webkit-mask-repeat: no-repeat;
            mask-repeat: no-repeat;
            -webkit-mask-size: 110px 60px; /* 初始尺寸 */
            mask-size: 110px 60px;
        }

        .img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .no-mask {
            -webkit-mask: none !important;
            mask: none !important;
        }

        /* Text elements styling */
        .text-container {
            position: absolute;
            width: 100%;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 10;
            pointer-events: none;
        }

        .text-left, .text-right {
            color: #000;
            font-size: 24px;
            font-weight: bold;
            position: absolute;
            white-space: nowrap;
        }
        .img-one {
            width: 100vw;
            height: 100vh;
        }
        .text-left {
            right: calc(50% + 175px); /* Position to the left of the logo */
        }

        .text-right {
            left: calc(50% + 175px); /* Position to the right of the logo */
        }
        .circle-nav-container {
            position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
        height: 100%;
        z-index: 2; /* 在底图之上，遮罩之下 */
        pointer-events: none; /* 允许点击穿透到下层 */
    }
        .circle-container {
            position: relative;
        width: 600px;
        height: 600px;
        margin: 0 auto;
        top: 55%;
        transform: translateY(-50%);
        pointer-events: auto; /* 恢复点击事件 */
        }

        .circle {
            position: absolute;
        width: 100%;
        height: 100%;
        border: 2px solid rgba(255, 255, 255, 0.5);
        border-radius: 50%;
        }
        
        .dot {
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border-radius: 50%;
            cursor: pointer;
            transform: translate(-50%, -50%);
            transition: all 0.5s ease;
            z-index: 2;
        }
        
        .dot.active {
            width: 30px;
            height: 30px;
            background-color: #ff3333;
            border: 3px solid white;
            box-shadow: 0 0 15px rgba(255, 51, 51, 0.7);
        }
        
        .content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: white;
            width: 400px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.5s ease, visibility 0.5s ease;
        }
        
        .content.active {
            opacity: 1;
            visibility: visible;
        }
        
        .title {
            font-size: 56px;
            font-weight: bold;
            margin-bottom: 10px;
            text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
        }
        
        .description {
            font-size: 16px;
            line-height: 1.6;
            margin-bottom: 20px;
        }
        
        
        
        .label {
            position: absolute;
            color: white;
            font-weight: bold;
            font-size: 18px;
            white-space: nowrap;
            text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
            transform: translate(-50%, -50%);
        }
        
        .circle-path {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            pointer-events: none;
        }
        
        .arc-path {
            fill: none;
            stroke-width: 4;
            stroke-linecap: round;
            stroke-dasharray: 1000;
            stroke-dashoffset: 1000;
            transition: stroke-dashoffset 0.8s ease;
            filter: drop-shadow(0 0 3px rgba(255, 51, 51, 0.3));
            opacity: 0;
        }
        
        .arc-path.active {
            opacity: 1;
            stroke-dashoffset: 0;
            transition: stroke-dashoffset 0.8s ease, opacity 0.3s ease;
        }


        .cont {
            transition: transform 1s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .ani-box2 {
            height: 100vh;
            z-index: 5;
        }
        .ani-box2 .line {
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 1px;
            background-color: transparent;
        }
        .box3 {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 6;
            background-color: #fff;
        }
        .img-cover {
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }
        .box3 .fix-cir {
            position: relative;
            width: 100%;
            height: 100%;
        }
        .box3 .fix-cir .img1 {
            width: 80%;
        }
        .pos-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .box3 .fix-cir img {
            width: 100%;
        }
        img {
            display: inline-block;
            max-width: 100%;
            image-rendering: crisp-edges;
            image-rendering: -moz-crisp-edges;
            image-rendering: -webkit-optimize-contrast;
            image-rendering: -o-crisp-edges;
            -ms-interpolation-mode: nearest-neighbor;
        }
        img {
            border: 0;
            vertical-align: middle;
            -ms-interpolation-mode: bicubic;
        }
        .box3 .fix-cir .img2 {
            width: 29%;
        }
        .pos-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }
        .box3 .fix-cir img {
            width: 100%;
        }
         .box3 .cont {
            position: absolute;
            top: 0;
            left: 0;
            transform: translateY(50%);
            width: 100%;
            height: 100%;
        }
         .box3 .cont .top-cont {
            position: absolute;
            top: 30%;
            left: 5%;
            width: 90%;
        }
        .box3 .cont .top-cont .tit {
            color: #333333;
        }
        .fonb {
            font-weight: bold !important;
        }
        .lh1 {
            line-height: 1;
        }
        .tac {
            text-align: center;
        }
        .tit-48 {
            font-size: 2.2rem;
        }
        .box3 .cont .top-cont .more {
            margin: 0.75rem auto 0;
        }
        .main-more {
            position: relative;
            display: flex
        ;
            align-items: center;
            justify-content: center;
            width: 3.5rem;
            height: 1.1rem;
            border-radius: 0.55rem;
            border: 1px solid #b5b5b5;
            color: #333333;
            background-color: #f1f3f5;
            transition: all 0.4s;
        }
        .tit-14 {
            font-size: 14px;
        }
        a {
            -webkit-tap-highlight-color: rgba(255, 0, 0, 0);
        }
        a {
            background: transparent;
            text-decoration: none;
            color: #000;
        }
        .main-more .pos-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border-radius: 0.55rem;
            overflow: hidden;
        }
        .main-more .pos-bg img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            -o-object-fit: cover;
            object-fit: cover;
            transition: all 0.4s;
        }
        .main-more .pos-bg .img2 {
            opacity: 0;
        }
        .main-more .pos-bg img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            -o-object-fit: cover;
            object-fit: cover;
            transition: all 0.4s;
        }
        .main-more p {
            margin-right: 0.3rem;
        }
        h1, h2, h3, h4, h5, h6, p, figure, form, blockquote {
            margin: 0;
        }
        .fa {
            display: inline-block;
            font: normal normal normal 14px / 1 FontAwesome;
            font-size: inherit;
            text-rendering: auto;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        .box3 .cont .li-box {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 67%;
            height: 69%;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            padding: 4.25rem 2rem 2.35rem;
            background-color: rgba(249, 249, 249, 0.44);
            -webkit-backdrop-filter: blur(23px);
            backdrop-filter: blur(23px);
            border-radius: 1.4rem;
            transition: top 1s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .box3 .cont .li-box .li {
            width: 45%;
            margin-right: 5%;
            border-top: 2px solid #989898;
            padding-top: 0.9rem;
            display: flex
        ;
            align-items: center;
            margin-bottom: 1.9rem;
        }
        .box3 .cont .li-box .li .num {
            display: flex
        ;
            font-size: 2.15rem;
            color: var(--logoColor);
            line-height: 1;
            /* min-width: 3em; */
            margin-right: 1rem;
            font-weight: bold;
        }
        .box3 .cont .li-box .li .txt {
            color: #333333;
            white-space: nowrap;
        }
        .lh1 {
            line-height: 1;
        }
        .tit-18 {
            font-size: 0.45rem;
        }
        .li-box {
            transition: top 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
        }

           /* canvas_jump.css */
.canvas_jump {
    position: relative;
    width: 27.3958333333vw;
    height: 27.3958333333vw;
    position: relative;
 
    margin: 2.0833333333vw auto 0;
}

.canvas_jump .canvas {
    position: relative;
    
    width: 29.6875vw;
    height: 29.6875vw;
    position: relative;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.canvas_jump .quan {
    position: absolute;
    width: 96%;
    height: 96%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    
}

.canvas_jump .color1 {
    width: 464px;
    height: 600px;
    opacity: .15;
    background: #1A4795;
    position: absolute;
    top: 0;
    right: 39px;
    z-index: 3;
    pointer-events: none;
    border-radius: 50%;
    filter: blur(60px);
}

.canvas_jump .color2 {
    width: 577px;
    opacity: .05;
    background: #43028C;
    position: absolute;
    top: 85px;
    left: 0;
    z-index: 2;
    pointer-events: none;
    border-radius: 50%;
    filter: blur(60px);
}
.space-cards-module {
    position: relative;
    width: 100%;
    min-height: 100vh;
    overflow: hidden;
    isolation: isolate;
}
        .i_part4 {
            position: relative;
            z-index: 20;
            margin-top: 400px;
        }
        .i_part4 .con {
            position: relative;
            z-index: 2;
        }
 
    .space-cards-module .i_part4 .con .boxs-ones {
    overflow: hidden;
    padding-bottom: 5.83vw;
    position: relative;
    perspective: 1000px;
}

        .i_part4 .con .boxs-ones .boxes {
            margin-bottom: 15.63vw;
        }
        a {
            color: #1f1f1f;
            cursor: pointer;
            display: inline-block;
            text-decoration: none !important;
        }
        .i_part4 .con .boxs-ones .boxes .h {
            color: #ac2121;
            font-family: hb;
            line-height: 2.19vw;
            margin-bottom: 1vw;
        }
        .f_26 {
        font-size: 24px;
    }
    .space-cards-module .boxes .pic-one {
    padding-bottom: 63.73%;
    position: relative;
    width: 160%;
    }
    .space-cards-module .boxes .pic-one img {
    height: 100%;
    left: 50%;
    object-fit: cover;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 100%;
    display: block;
}
    img {
        border: none;
        display: block;
        max-width: 100%;
    }
    .space-cards-module .boxes .p {
    color: #ffffff;
    font-family: hr;
    height: 4.5vw;
    line-height: 1.5vw;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    margin-top: .7vw;
    width: 160%;
    font-size: 13px;
    display: -webkit-box;
}
    .f_16 {
        font-size: 13px;
    }
    .space-cards-module .i_part4 .con .boxs-ones .boxes:nth-child(2n) {
    margin-left: 45.5%;
    width: 23.44%;
    transform-origin: center center;
}
    .i_part4 .con .boxs-ones .boxes {
        margin-bottom: 15.63vw;
    }
    .space-cards-module .boxes .h {
    color: #ffffff;
    font-family: hb;
    line-height: 2.19vw;
    margin-bottom: 1vw;
    font-size: 24px;
}
.space-cards-module .boxes:hover {
    transform: translateY(-10px);
    transition: transform 0.3s ease;
}
    .f_26 {
        font-size: 24px;
    }
    .i_part4 .con .boxs-ones .boxes:nth-child(2n-1) {
        margin-left: 24.2%;
        margin-top: 0;
        transform: translate(-25%) scale(1.75);
        transform-origin: 100% 0;
        width: 23.44%;
    }
    .space-cards-module .space-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: linear-gradient(to bottom, #050523, #0c0c2b, #1a1a4a);
}
        
        .i_part4 {
            position: relative;
            z-index: 20;
            margin-top: 400px;
            color: #fff; /* Make text more visible against dark background */
        }
        
        /* Update text colors for better visibility */
        
        .space-cards-module .i_part4 .con .boxs-ones {
    overflow: hidden;
    padding-bottom: 5.83vw;
    position: relative;
    perspective: 1000px;
}
        .i_part4 .con .boxs-ones .boxes .h {
            color: #ffffff;
        }
        
        .i_part4 .con .boxs-ones .boxes .p {
            color: #ffffff;
        }
        /* 在about.css中添加 */
:root {
  --nav-height: 80px; /* 根据实际导航栏高度修改 */
}

/* 现代浏览器方案 */
:target {
  scroll-margin-top: var(--nav-height);
}

/* 传统浏览器兼容方案 */
:target::before {
  content: "";
  display: block;
  height: var(--nav-height);
  margin-top: calc(-1 * var(--nav-height));
  visibility: hidden;
}

/* 响应式适配 */
@media (max-width: 768px) {
  :root {
      --nav-height: 60px;
  }
}
    @media (max-width: 1199px) and (min-width: 992px) {
      body { font-size: 13px; }
      .nav-items { margin-left: 100px; gap: 15px; }
      .logo-container { width: 120px; height: 32px; }
      .carousel-caption h2 { font-size: 32px; }
      .carousel-caption p { font-size: 18px; }
      .footer {
        min-width: 0;
        /* height: auto; */
        /* flex-direction: column; */
        align-items: center;
        padding: 20px 0;
      }
      footer ul li .text-box {
        font-size: 14px;
      }
      .logo-container-one {
        margin-left: 0;
        /* margin-top: 20px; */
        width: 120px;
        height: 80px;
        /* display: flex; */
        justify-content: center;
        align-items: center;
      }
      .content-middle {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .contact-info ul {
        /* flex-direction: column; */
        margin-left: 0;
        align-items: center;
      }
      .hover-container {
        width: 70px;
        height: 80px;
      }
      .contact-info li {
        margin: 10px 0;
        justify-content: center;
      }
      .icon-group {
        /* margin: 10px 0; */
        justify-content: center;
        gap: 8px;
        margin-right: 30px;
      }
      .icon-group img {
        width: 30px;
        height: 30px;
        margin: 0 5px;
        cursor: pointer
      }
      .record-info {
        text-align: center;
      }
    }
    @media (max-width: 991px) and (min-width: 768px) {
      .nav { min-width: 0; }
      .nav-items { display: none; margin-left: 0px;
        gap: 0px;}
      .hamburger { display: flex; }
      .logo-container { width: 100px; height: 28px; margin-left: 20px; }
      .carousel-caption h2 { font-size: 24px; }
      .carousel-caption p { font-size: 14px; }
      .footer {
        min-width: 0;
        flex-direction: column;
        height: auto;
        padding: 20px 0;
        align-items: center;
      }
      .logo-container-one {
        margin-left: 0;
        margin-top: 0px;
        width: 180px;
        height: 60px;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .content-middle {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .contact-info ul {
        /* flex-direction: column; */
        margin-left: 0;
        align-items: center;
      }
      .contact-info li {
        margin: 10px 0;
        justify-content: center;
      }
      .icon-group {
        margin: 10px 0;
        justify-content: center;
      }
      .record-info {
        text-align: center;
      }
    }
    @media (max-width: 767px) and (min-width: 576px) {
      .nav { min-width: 0; }
      .nav-items { display: none; }
      .hamburger { display: flex; }
      .logo-container { width: 80px; height: 24px; margin-left: 10px; }
      .carousel-caption span { font-size: 22px ; width: 90vw ; }
      .carousel-caption p { font-size: 12px ; width: 90vw ; }
      .footer {
        min-width: 0;
        flex-direction: column;
        height: auto;
        padding: 10px 0;
        align-items: center;
      }
      .logo-container-one {
        margin-left: 0;
        margin-top: 5px;
        width: 170px;
        height: 40px;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .content-middle {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .contact-info ul {
        flex-direction: column;
        margin-left: 0;
        align-items: baseline;
      }
      .contact-info li {
        margin: 8px 0;
        justify-content: center;
      }
      .icon-group {
        /* margin: 8px 0; */
        justify-content: center;
      }
      .record-info {
        text-align: center;
      }
    }
    @media (max-width: 575px) {
      body { font-size: 11px; }
      .nav { min-width: 0; }
      .nav-items { display: none; }
      .hamburger { display: flex; }
      .logo-container { width: 60px; height: 18px; margin-left: 5px; }
      .carousel-caption span { font-size: 14px ; width: 95vw ; }
      .carousel-caption p { font-size: 10px ; width: 95vw ; }
      .footer {
        min-width: 0;
        flex-direction: column;
        height: auto;
        padding: 5px 0;
        align-items: center;
      }
      .logo-container-one {
        margin-left: 0;
        margin-top: 20px;
        width: 160px;
        height: 30px;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .content-middle {
        margin-top: 20px;
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .contact-info ul {
        flex-direction: column;
        margin-left: 0;
        align-items: baseline;
      }
      .contact-info li {
        margin: 5px 0;
        justify-content: center;
      }
      .icon-group {
        /* margin: 5px 0; */
        justify-content: center;
        margin-bottom: 60px;
      }
      .record-info {
        font-size: 10px;
        text-align: center;
      }
    }
    @media (max-width: 480px) {
      .nav-items {
        display: none;
      }
    }
    /* 汉堡按钮样式 */
    .hamburger {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 40px;
      height: 40px;
      cursor: pointer;
      z-index: 1201;
      margin-left: 10px;
    }
    .hamburger span {
      display: block;
      width: 28px;
      height: 4px;
      margin: 4px 0;
      background: #333;
      border-radius: 2px;
      transition: all 0.3s;
    }
    /* 全屏菜单样式 */
    .mobile-menu-overlay {
      display: none;
      position: fixed;
      z-index: 2000;
      left: 0; top: 0; right: 0; bottom: 0;
      width: 100vw; height: 100vh;
      background: #fff;
      flex-direction: column;
      justify-content: flex-start;
      align-items: center;
      animation: fadeIn 0.3s;
    }
    .mobile-menu-overlay.active { display: flex; }
    .mobile-menu-header {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 24px 32px 12px 32px;
      border-bottom: 1px solid #eee;
      position: relative;
    }
    .mobile-menu-logo {
      height: 40px;
    }
    .mobile-menu-close {
      font-size: 36px;
      cursor: pointer;
      color: #333;
      font-weight: bold;
      position: absolute;
      right: 32px;
      top: 24px;
    }
    .mobile-menu-list {
      width: 100%;
      padding: 0;
      margin: 0;
      list-style: none;
      display: flex;
      flex-direction: column;
      align-items: stretch;
      font-size: 22px;
      /* margin-top: 30px; */
    }
    .mobile-menu-list > li {
      padding: 22px 32px;
      border-bottom: 1px solid #f0f0f0;
      position: relative;
      text-align: left;
    }
    .mobile-menu-list > li > a {
      color: #222;
      text-decoration: none;
      display: block;
      width: 100%;
      font-size: 22px;
      font-weight: 500;
    }
    .mobile-menu-list .has-dropdown > a {
      position: relative;
      padding-right: 32px;
    }
    .mobile-menu-list .has-dropdown > a:after {
      content: none !important;
    }
    .mobile-menu-list .has-dropdown.open > a:after {
      transform: translateY(-50%) rotate(-180deg);
    }
    .mobile-menu-list .dropdown {
      display: none;
      flex-direction: column;
      background: #f9f9f9;
      border-radius: 0 0 8px 8px;
      margin-top: 8px;
      margin-bottom: 8px;
      padding-left: 0;
      padding-right: 0;
    }
    .mobile-menu-list .has-dropdown.open .dropdown {
      display: flex;
    }
    .mobile-menu-list .dropdown li {
      padding: 16px 16px 16px 32px;
      border: none;
      font-size: 18px;
      color: #444;
      background: #f9f9f9;
    }
    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }
    /* 只在 767px 以下显示汉堡按钮，隐藏原导航 */
    @media (max-width: 767px) {
      .nav {
        min-width: 0;
        position: relative;
      }
      .logo-container {
        margin-left: 16px;
      }
      .hamburger {
        display: flex !important;
        position: absolute;
        right: 20px;
        top: 50%;
        left: auto;
        transform: translateY(-50%);
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
    }
    @media (min-width: 768px) {
      .nav-items { display: flex !important; }
      .hamburger { display: none !important; }
    }
    /* 新增：下拉三角样式 */
    .mobile-menu-list .dropdown-arrow {
      display: inline-block;
      width: 24px;
      height: 24px;
      vertical-align: middle;
      position: absolute;
      right: 16px;
      top: 50%;
      transform: translateY(-50%);
      cursor: pointer;
    }
    .mobile-menu-list .dropdown-arrow::after {
      content: '\25BC';
      font-size: 18px;
      color: #888;
      display: block;
      transition: transform 0.3s;
    }
    .mobile-menu-list .has-dropdown.open .dropdown-arrow::after {
      transform: rotate(-180deg);
    }
    .mobile-menu-list .has-dropdown > a {
      padding-right: 40px;
    }
    @media (min-width: 1200px) and (max-width: 1680px) {
      .footer {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        padding: 0;
        min-width: 1200px;
        height: 180px;
      }
      .content-middle {
        flex: auto;
      }
      .logo-container-one {
        margin-left: 30px;
        margin-top: 30px;
        width: 120px;
        height: 80px;
        display: block;
      }
      .content-middle {
        display: block;
        width: auto;
      }
      .contact-info ul {
        flex-direction: row;
        margin-left: 0px;
        align-items: center;
      }
      .contact-info li {
        margin: 15px;
        justify-content: flex-start;
      }
      .icon-group {
        margin-right: 30px;
        margin-top: 20px;
        margin-bottom: 20px;
        justify-content: flex-end;
      }
      .record-info {
        text-align: center;
        font-size: 12px;
      }
    }

/* 添加性能优化相关的CSS */
.carousel-item img,
.boxes img,
.logo-container img {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 优化动画性能 */
.carousel-item {
    transform: translateZ(0);
    will-change: opacity, transform;
    backface-visibility: hidden;
}

/* 优化滚动性能 */
.smooth-wrapper {
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
}

/* 优化3D变换性能 */
.space-cards-module {
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* 优化移动端性能 */
@media (max-width: 767px) {
    .carousel-item img,
    .boxes img {
        transform: none;
        will-change: auto;
    }
    
    .smooth-wrapper,
    .space-cards-module {
        transform: none;
        will-change: auto;
    }
}