* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    body {
        font-family: 'Microsoft YaHei', Arial, sans-serif;
        background-color: #000;
        overflow-x: hidden;
    }
    /* Swiper轮播图样式 - 替代手写轮播 */
    
    .banner-swiper {
        width: 100%;
        height: 50vh;
        min-height: 400px;
    }
    
    .banner-swiper .swiper-slide {
        position: relative;
        overflow: hidden;
    }
    
    .banner-swiper .swiper-slide img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        user-select: none;
        -webkit-user-drag: none;
    }
    
    .carousel-content {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
        color: #fff;
        z-index: 10;
        pointer-events: none;
    }
    
    .carousel-text {
        display: inline-block;
    }
    
    .carousel-content h1 {
        font-size: 56px;
        font-weight: 700;
        margin-bottom: 15px;
        text-shadow: 2px 2px 15px rgba(0, 0, 0, 0.6);
        letter-spacing: 5px;
    }
    
    .carousel-content h3 {
        font-size: 24px;
        font-weight: 400;
        text-shadow: 1px 1px 10px rgba(0, 0, 0, 0.6);
        letter-spacing: 3px;
        opacity: 0.9;
    }
    /* Swiper分页器样式 */
    
    .banner-swiper .swiper-pagination-bullet {
        width: 12px;
        height: 12px;
        background-color: rgba(255, 255, 255, 0.5);
        opacity: 1;
    }
    
    .banner-swiper .swiper-pagination-bullet-active {
        background-color: #fff;
        transform: scale(1.2);
    }
    /* Swiper导航按钮样式 */
    
    .banner-swiper .swiper-button-prev,
    .banner-swiper .swiper-button-next {
        width: 50px;
        height: 50px;
        background-color: rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        transition: all 0.3s ease;
    }
    
    .banner-swiper .swiper-button-prev:hover,
    .banner-swiper .swiper-button-next:hover {
        background-color: rgba(255, 255, 255, 0.8);
    }
    
    .banner-swiper .swiper-button-prev::after,
    .banner-swiper .swiper-button-next::after {
        font-size: 16px;
        color: #333;
    }
    /* 手机端隐藏导航按钮 */
    
    @media (max-width: 768px) {
        .banner-swiper .swiper-button-prev,
        .banner-swiper .swiper-button-next {
            display: none;
        }
        .carousel-content h1 {
            font-size: 32px;
        }
        .carousel-content h3 {
            font-size: 16px;
        }
    }
    /* 新闻资讯区域样式 - 新版布局 */
    
    .news-section {
        background-color: #fff;
        padding: 80px 50px;
    }
    /* 1600px宽容器 */
    
    .ys-cont1600 {
        max-width: 1600px;
        margin: 0 auto;
    }
    /* 页眉联动：左侧大标题，右侧更多链接 */
    
    .news-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 50px;
        padding-bottom: 20px;
        border-bottom: 2px solid #1e5799;
    }
    
    .news-title {
        font-size: 42px;
        font-weight: 700;
        color: #1a1a1a;
        letter-spacing: 4px;
    }
    
    .news-more-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: #1e5799;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .news-more-link svg {
        width: 18px;
        height: 18px;
        transition: transform 0.3s ease;
    }
    
    .news-more-link:hover {
        color: #2980b9;
    }
    
    .news-more-link:hover svg {
        transform: translateX(5px);
    }
    /* 新闻内容区：左右布局 */
    
    .news-content {
        display: flex;
        gap: 50px;
    }
    /* 左侧：精选深度卡片 (60%) */
    
    .news-featured {
        flex: 0 0 60%;
    }
    
    .news-featured-card {
        position: relative;
        height: 600px;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
        margin-top: 20px;
    }
    
    .news-featured-image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
    }
    
    .news-featured-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }
    
    .news-featured-card:hover .news-featured-image img {
        transform: scale(1.08);
    }
    /* 浮动信息层 */
    
    .news-featured-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 40px 50px;
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
        color: #fff;
    }
    
    .news-featured-date {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 15px;
        display: inline-block;
        padding: 6px 16px;
        background: rgba(30, 87, 153, 0.6);
        border-radius: 20px;
    }
    
    .news-featured-title {
        font-size: 28px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 20px;
        line-height: 1.4;
    }
    
    .news-featured-summary {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.85);
        line-height: 1.8;
        margin-bottom: 30px;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .news-featured-btn {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 14px 28px;
        background: #1e5799;
        color: #fff;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        border-radius: 30px;
        transition: all 0.3s ease;
    }
    
    .news-featured-btn:hover {
        background: #2980b9;
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(30, 87, 153, 0.4);
    }
    
    .btn-arrow {
        width: 24px;
        height: 24px;
        background: rgba(255, 255, 255, 0.2);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    .btn-arrow svg {
        width: 14px;
        height: 14px;
    }
    
    .news-featured-btn:hover .btn-arrow {
        background: rgba(255, 255, 255, 0.3);
        transform: translateX(3px);
    }
    /* 右侧：时间轴倒序列表 (40%) */
    
    .news-list-right {
        flex: 0 0 40%;
    }
    
    .news-timeline {
        display: flex;
        flex-direction: column;
        gap: 0;
    }
    
    .news-timeline-item {
        position: relative;
        padding: 25px 0 25px 30px;
        border-left: 2px solid #e5e5e5;
        transition: all 0.3s ease;
    }
    
    .news-timeline-item::before {
        content: '';
        position: absolute;
        left: -6px;
        top: 28px;
        width: 10px;
        height: 10px;
        background: #1e5799;
        border-radius: 50%;
        transition: all 0.3s ease;
    }
    
    .news-timeline-item:hover {
        background: #f8f9fa;
        border-left-color: #1e5799;
    }
    
    .news-timeline-item:hover::before {
        transform: scale(1.3);
        box-shadow: 0 0 10px rgba(30, 87, 153, 0.5);
    }
    
    .timeline-date {
        font-size: 13px;
        color: #999;
        margin-bottom: 10px;
        font-weight: 500;
    }
    
    .timeline-title {
        font-size: 18px;
        font-weight: 700;
        color: #1a1a1a;
        margin-bottom: 12px;
        line-height: 1.4;
        cursor: pointer;
        transition: color 0.3s ease;
    }
    
    .timeline-title:hover {
        color: #1e5799;
    }
    
    .timeline-summary {
        font-size: 14px;
        color: #666;
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    /* 数字科技化运营区域 - 现代极简选项卡切换展示区 */
    
    .digital-tabs-section {
        background: #fff;
        padding: 0;
        position: relative;
    }
    /* 上方内容展示区 */
    
    .digital-display-container {
        padding: 80px 10%;
        min-height: 500px;
    }
    
    .digital-content-wrapper {
        display: flex;
        align-items: center;
        gap: 60px;
    }
    /* 文字区样式 */
    
    .digital-text-side {
        flex: 0 0 40%;
        animation: fadeInUp 0.6s ease-out;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .digital-sub-title {
        display: block;
        font-size: 14px;
        color: #1e5799;
        font-weight: 600;
        letter-spacing: 2px;
        margin-bottom: 15px;
        text-transform: uppercase;
    }
    
    .digital-main-title {
        font-size: 48px;
        font-weight: 700;
        color: #1a1a1a;
        margin: 0 0 25px 0;
        letter-spacing: 2px;
        line-height: 1.2;
    }
    
    .digital-desc {
        font-size: 16px;
        color: #666;
        line-height: 1.8;
        margin-bottom: 35px;
    }
    
    .digital-learn-more {
        display: inline-flex;
        align-items: center;
        gap: 15px;
        color: #1e5799;
        font-size: 16px;
        font-weight: 600;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .digital-learn-more:hover {
        color: #2980b9;
    }
    
    .digital-learn-more:hover .circle-arrow {
        background: #1e5799;
        transform: translateX(5px);
    }
    
    .digital-learn-more:hover .circle-arrow svg {
        stroke: #fff;
    }
    
    .circle-arrow {
        width: 44px;
        height: 44px;
        border: 2px solid #1e5799;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    .circle-arrow svg {
        width: 18px;
        height: 18px;
        stroke: #1e5799;
        transition: stroke 0.3s ease;
    }
    /* 图片区样式 */
    
    .digital-image-side {
        flex: 0 0 60%;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .digital-image-placeholder {
        width: 100%;
        max-width: 500px;
        height: 350px;
        background: linear-gradient(135deg, #1e5799 0%, #2980b9 100%);
        border-radius: 20px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: #fff;
        box-shadow: 0 20px 60px rgba(30, 87, 153, 0.3);
        transition: transform 0.5s ease, box-shadow 0.5s ease;
    }
    
    .digital-image-placeholder:hover {
        transform: scale(1.02);
        box-shadow: 0 25px 70px rgba(30, 87, 153, 0.4);
    }
    
    .digital-image-placeholder .placeholder-icon {
        font-size: 64px;
        margin-bottom: 20px;
    }
    
    .digital-image-placeholder .placeholder-text {
        font-size: 18px;
        opacity: 0.9;
    }
    /* 底部导航样式 */
    
    .digital-tab-nav {
        display: flex;
        border-top: 1px solid #ddd;
        background: #fff;
    }
    
    .digital-tab-item {
        flex: 1;
        padding: 25px 0;
        text-align: center;
        cursor: pointer;
        color: #666;
        position: relative;
        transition: color 0.3s ease;
    }
    
    .digital-tab-item:hover {
        color: #1e5799;
    }
    /* 激活态的蓝条 */
    
    .digital-tab-item.active {
        color: #1e5799;
    }
    
    .digital-tab-item.active::before {
        content: "";
        position: absolute;
        top: -1.5px;
        left: 0;
        width: 100%;
        height: 3px;
        background-color: #1e5799;
    }
    
    .digital-tab-item .tab-name {
        font-size: 16px;
        font-weight: 600;
        letter-spacing: 1px;
    }
    /* 乘用车产品与解决方案区域 */
    
    .product-section {
        background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7));
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        padding: 80px 50px;
        position: relative;
        overflow: hidden;
    }
    
    .product-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(30, 87, 153, 0.3) 0%, rgba(0, 0, 0, 0.5) 100%);
        pointer-events: none;
    }
    
    .product-section .product-container {
        position: relative;
        z-index: 1;
    }
    
    .product-section .product-subtitle {
        color: #64b5f6;
    }
    
    .product-section .product-title {
        color: #fff;
    }
    
    .product-section .product-desc {
        color: rgba(255, 255, 255, 0.85);
    }
    
    .product-container {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .product-content {
        display: flex;
        gap: 60px;
        align-items: center;
    }
    
    .product-left {
        flex: 1;
    }
    
    .product-subtitle {
        font-size: 14px;
        color: #1e5799;
        font-weight: 600;
        letter-spacing: 2px;
        margin-bottom: 15px;
    }
    
    .product-title {
        font-size: 48px;
        font-weight: 700;
        color: #1a1a1a;
        margin-bottom: 25px;
        letter-spacing: 2px;
    }
    
    .product-desc {
        font-size: 16px;
        color: #666;
        line-height: 1.8;
        margin-bottom: 30px;
    }
    
    .product-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        background-color: #1e5799;
        color: #fff;
        padding: 15px 30px;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        border-radius: 8px;
        transition: all 0.3s ease;
    }
    
    .product-btn:hover {
        background-color: #2980b9;
        transform: translateY(-2px);
    }
    
    .product-btn .arrow {
        transition: transform 0.3s ease;
    }
    
    .product-btn:hover .arrow {
        transform: translateX(5px);
    }
    
    .product-right {
        flex: 1;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .product-image {
        width: 100%;
        max-width: 500px;
        height: 350px;
        background: linear-gradient(135deg, #1e5799 0%, #2980b9 50%, #1e5799 100%);
        background-size: 200% 200%;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
        box-shadow: 0 10px 40px rgba(30, 87, 153, 0.3);
        transition: transform 0.5s ease, box-shadow 0.5s ease;
        animation: gradientShift 5s ease infinite;
    }
    
    .product-image:hover {
        transform: scale(1.05);
        box-shadow: 0 15px 50px rgba(30, 87, 153, 0.4);
    }
    
    @keyframes gradientShift {
        0% {
            background-position: 0% 50%;
        }
        50% {
            background-position: 100% 50%;
        }
        100% {
            background-position: 0% 50%;
        }
    }
    
    .product-image::before {
        content: 'SVOLT';
        font-size: 48px;
        font-weight: 700;
        color: rgba(255, 255, 255, 0.9);
        letter-spacing: 8px;
        z-index: 2;
    }
    
    .product-image::after {
        content: '';
        position: absolute;
        width: 200px;
        height: 100px;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
        transform: rotate(-30deg);
        animation: shine 3s infinite;
    }
    
    @keyframes shine {
        0% {
            left: -200px;
        }
        100% {
            left: 500px;
        }
    }
    
    .product-tabs {
        display: flex;
        justify-content: center;
        gap: 30px;
        margin-top: 50px;
        padding-top: 30px;
        border-top: 1px solid #ddd;
    }
    
    .product-tab {
        padding: 12px 30px;
        font-size: 16px;
        font-weight: 500;
        color: #666;
        background-color: transparent;
        border: 1px solid #ddd;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .product-tab.active {
        background-color: #1e5799;
        color: #fff;
        border-color: #1e5799;
    }
    
    .product-tab:hover:not(.active) {
        border-color: #1e5799;
        color: #1e5799;
    }
    /* 重要合作伙伴区域 */
    
    .partners-section {
        background: linear-gradient(rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.95));
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        padding: 80px 50px;
        position: relative;
    }
    
    .partners-container {
        max-width: 1400px;
        margin: 0 auto;
    }
    
    .partners-header {
        text-align: center;
        margin-bottom: 50px;
    }
    
    .partners-title {
        font-size: 36px;
        font-weight: 700;
        color: #1a1a1a;
        letter-spacing: 4px;
    }
    /* 合作伙伴Swiper样式 - 替代CSS animation */
    
    .partners-swiper {
        overflow: hidden;
    }
    
    .partners-swiper .swiper-slide {
        width: auto;
    }
    
    .partner-logo {
        display: flex;
        align-items: center;
        justify-content: center;
        min-width: 150px;
        height: 80px;
        font-size: 18px;
        font-weight: 600;
        color: #333;
        border-right: 1px solid #ddd;
        padding-right: 40px;
        filter: grayscale(100%);
        transition: filter 0.3s ease;
    }
    
    .partner-logo:hover {
        filter: grayscale(0%);
        color: #1e5799;
    }
    
    .partners-slogan {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 50px;
        gap: 20px;
    }
    
    .slogan-line {
        width: 100px;
        height: 1px;
        background-color: #ddd;
    }
    
    .slogan-text {
        font-size: 20px;
        color: #1e5799;
        font-weight: 500;
        letter-spacing: 3px;
    }
    /* 企业简介与实力数据区域 */
    
    .company-section {
        width: 100%;
        background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
        padding: 80px 0px 0px 0px;
        position: relative;
        overflow: hidden;
    }
    
    .company-container {
        margin: 0 auto;
        position: relative;
    }
    
    .company-image-wrapper {
        position: relative;
        width: 100%;
        height: 800px;
        overflow: hidden;
    }
    
    .company-image {
        width: 100%;
        height: 100%;
        background-size: cover;
        background-position: center;
        transform: scale(1);
        transform-origin: center center;
        will-change: transform;
        transition: transform 0.1s ease-out;
    }
    
    .company-intro {
        display: flex;
        gap: 40px;
        margin-top: 30px;
        margin-bottom: 50px;
        justify-content: center;
    }
    
    .company-intro-left {
        text-align: center;
    }
    /* 全宽堆叠翻转图片区域 */
    
    .showcase-section {
        position: relative;
        width: 100%;
        overflow: visible;
        margin-top: 60px;
        margin-bottom: 0;
        padding-bottom: 0;
    }
    
    .showcase-stack {
        position: sticky;
        top: 0;
        width: 100%;
        height: 100vh;
    }
    
    .showcase-card {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        overflow: hidden;
        transform: translateX(0);
        transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1;
    }
    /* 卡片层级：最顶层的卡片z-index最高 */
    
    .showcase-card[data-index="0"] {
        z-index: 3;
    }
    
    .showcase-card[data-index="1"] {
        z-index: 2;
    }
    
    .showcase-card[data-index="2"] {
        z-index: 1;
    }
    /* 翻开状态：卡片往左滑出 */
    
    .showcase-card.flipped {
        transform: translateX(-100%);
    }
    /* 正在翻开的状态：部分滑出 */
    
    .showcase-card.partial-flip {
        transform: translateX(var(--flip-progress, 0%));
    }
    
    .showcase-card-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-size: cover;
        background-position: center;
        transform: scale(1);
        transform-origin: center center;
        will-change: transform;
        transition: transform 0.3s ease-out;
    }
    /* 添加暗色遮罩层 */
    
    .showcase-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5));
        z-index: 1;
    }
    
    .showcase-card-content {
        position: absolute;
        bottom: 80px;
        left: 50px;
        z-index: 2;
        color: #fff;
        max-width: 500px;
    }
    
    .showcase-tag {
        display: inline-block;
        padding: 8px 20px;
        background: linear-gradient(135deg, #1e5799, #2980b9);
        color: #fff;
        font-size: 14px;
        font-weight: 500;
        border-radius: 25px;
        margin-bottom: 20px;
        letter-spacing: 1px;
    }
    
    .showcase-title {
        font-size: 42px;
        font-weight: 700;
        color: #fff;
        margin: 0 0 20px 0;
        line-height: 1.3;
        text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    }
    
    .showcase-desc {
        font-size: 18px;
        color: rgba(255, 255, 255, 0.85);
        line-height: 1.6;
        margin-bottom: 30px;
    }
    
    .showcase-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 15px 35px;
        background: #fff;
        color: #1e5799;
        font-size: 16px;
        font-weight: 600;
        text-decoration: none;
        border-radius: 30px;
        transition: all 0.3s ease;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    }
    
    .showcase-btn:hover {
        background: #1e5799;
        color: #fff;
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(30, 87, 153, 0.4);
    }
    /* 业务体系区域 */
    
    .business-section {
        background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 50%, #f8f9fa 100%);
        padding: 100px 50px;
        position: relative;
        overflow: hidden;
    }
    
    .business-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: radial-gradient(circle at 10% 20%, rgba(30, 87, 153, 0.03) 0%, transparent 50%), radial-gradient(circle at 90% 80%, rgba(30, 87, 153, 0.03) 0%, transparent 50%);
        pointer-events: none;
    }
    
    .business-container {
        max-width: 1400px;
        margin: 0 auto;
        position: relative;
        z-index: 1;
    }
    
    .business-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: 60px;
        gap: 40px;
    }
    
    .business-header-left {
        flex-shrink: 0;
    }
    
    .business-title {
        font-size: 42px;
        font-weight: 700;
        color: #1a1a1a;
        margin: 0;
        letter-spacing: 2px;
    }
    
    .business-subtitle-en {
        display: block;
        font-size: 14px;
        color: #999;
        letter-spacing: 4px;
        margin-top: 8px;
    }
    
    .business-header-right {
        flex: 1;
        max-width: 600px;
    }
    
    .business-desc {
        font-size: 16px;
        color: #666;
        line-height: 1.8;
        margin: 0;
    }
    
    .business-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        gap: 30px;
    }
    
    .business-card {
        background: #fff;
        border-radius: 16px;
        padding: 40px;
        position: relative;
        overflow: hidden;
        border: 1px solid #eee;
        opacity: 0;
        transform: translateY(40px);
        transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    }
    
    .business-card.active {
        opacity: 1;
        transform: translateY(0);
    }
    
    .business-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        border-color: #1e5799;
    }
    
    .business-card:hover .business-card-icon {
        transform: scale(1.1);
    }
    
    .business-card-icon {
        width: 64px;
        height: 64px;
        color: #1e5799;
        margin-bottom: 20px;
        transition: transform 0.3s ease;
    }
    
    .business-card-icon svg {
        width: 100%;
        height: 100%;
    }
    
    .business-card-title {
        font-size: 22px;
        font-weight: 600;
        color: #1a1a1a;
        margin: 0 0 15px 0;
    }
    
    .business-card-content {
        font-size: 14px;
        color: #666;
        line-height: 1.8;
        margin: 0;
    }
    /* 核心竞争力卡片特殊样式 */
    
    .business-card-core {
        grid-row: span 2;
        background: linear-gradient(135deg, #1e5799 0%, #2980b9 100%);
        border: none;
    }
    
    .business-card-core .business-card-icon {
        color: rgba(255, 255, 255, 0.9);
    }
    
    .business-card-core .business-card-title {
        color: #fff;
        font-size: 28px;
    }
    
    .business-card-core .business-card-content {
        color: rgba(255, 255, 255, 0.85);
    }
    
    .business-card-badge {
        position: absolute;
        top: 20px;
        right: 20px;
        background: rgba(255, 255, 255, 0.2);
        color: #fff;
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 12px;
        font-weight: 500;
    }
    
    .business-card-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 20px;
    }
    
    .business-tag {
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 12px;
    }
    /* 核心竞争力描边动画 */
    
    .business-card-stroke {
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 3px;
        background: linear-gradient(90deg, transparent, #fff, transparent);
        transition: width 1s ease;
    }
    
    .business-card-core.active .business-card-stroke {
        width: 80%;
    }
    /* AI卡片脉冲效果 */
    
    .business-card-ai {
        position: relative;
    }
    
    .business-card-pulse {
        position: absolute;
        top: 30px;
        left: 30px;
        width: 64px;
        height: 64px;
        border-radius: 50%;
        background: rgba(30, 87, 153, 0.1);
        animation: pulse 2s infinite;
        pointer-events: none;
    }
    
    @keyframes pulse {
        0% {
            transform: scale(1);
            opacity: 0.5;
        }
        50% {
            transform: scale(1.5);
            opacity: 0;
        }
        100% {
            transform: scale(1);
            opacity: 0;
        }
    }
    
    .business-card-ai .business-card-icon {
        position: relative;
        z-index: 1;
    }
    /* 图标颜色变体 */
    
    .business-icon-energy {
        color: #27ae60;
    }
    
    .business-icon-digital {
        color: #9b59b6;
    }
    
    .business-icon-construction {
        color: #e67e22;
    }
    /* 响应式设计 */
    
    @media (max-width: 1024px) {
        .business-header {
            flex-direction: column;
        }
        .business-grid {
            grid-template-columns: 1fr;
        }
        .business-card-core {
            grid-row: auto;
        }
    }
    
    @media (max-width: 768px) {
        .business-section {
            padding: 60px 20px;
        }
        .business-title {
            font-size: 32px;
        }
        .business-card {
            padding: 30px;
        }
        .business-card-core .business-card-title {
            font-size: 22px;
        }
    }
    /* 内容容器：居中、限制最大宽度，适配响应式 */
    
    .company-container {
        max-width: 100%;
        margin: 0 auto;
        text-align: center;
        position: relative;
        z-index: 2;
    }
    /* 标题样式：放大、加粗、加装饰，突出层级 */
    
    .company-intro-title {
        font-size: 48px;
        font-weight: 700;
        color: #1e293b;
        margin-bottom: 40px;
        position: relative;
        display: inline-block;
    }
    /* 标题下方装饰线，增加设计感 */
    
    .company-intro-title::after {
        content: "";
        position: absolute;
        bottom: -12px;
        left: 50%;
        transform: translateX(-50%);
        width: 80px;
        height: 4px;
        background: linear-gradient(90deg, #3b82f6 0%, #06b6d4 100%);
        border-radius: 2px;
    }
    /* 正文样式：优化行高、字间距，提升可读性 */
    
    .company-intro-text {
        font-size: 20px;
        line-height: 1.8;
        color: #475569;
        max-width: 1000px;
        margin: 0 auto 50px;
        letter-spacing: 0.5px;
    }
    /* 按钮样式：加背景、圆角、悬浮动效，强化交互 */
    
    .company-intro-btn {
        display: inline-block;
        font-size: 20px;
        font-weight: 500;
        color: #1e40af;
        text-decoration: none;
        padding: 14px 32px;
        border: 2px solid #3b82f6;
        border-radius: 50px;
        transition: all 0.3s ease;
        background: #ffffff;
    }
    
    .company-intro-btn:hover {
        background: #3b82f6;
        color: #ffffff;
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(59, 130, 246, 0.2);
    }
    
    .company-intro-btn .arrow {
        transition: transform 0.3s ease;
    }
    
    .company-intro-btn:hover .arrow {
        transform: translateX(5px);
    }
    
    .company-stats {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    
    .stat-card {
        background-color: #fff;
        padding: 30px;
        border-radius: 12px;
        text-align: center;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .stat-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    }
    
    .stat-number {
        font-size: 36px;
        font-weight: 700;
        color: #1e5799;
        margin-bottom: 10px;
    }
    
    .stat-unit {
        font-size: 14px;
        color: #1e5799;
        font-weight: 500;
    }
    
    .stat-label {
        font-size: 14px;
        color: #666;
        margin-top: 10px;
    }
    /* 数字科技化运营区域样式 */
    
    .digital-section {
        background-color: #f8f9fa;
        padding: 80px 50px;
    }
    
    .digital-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 50px;
        padding-bottom: 20px;
        border-bottom: 2px solid #1e5799;
    }
    
    .digital-title {
        font-size: 42px;
        font-weight: 700;
        color: #1a1a1a;
        letter-spacing: 4px;
    }
    
    .digital-more-link {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: #1e5799;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .digital-more-link svg {
        width: 18px;
        height: 18px;
        transition: transform 0.3s ease;
    }
    
    .digital-more-link:hover {
        color: #2980b9;
    }
    
    .digital-more-link:hover svg {
        transform: translateX(5px);
    }
    
    .digital-content {
        display: flex;
        gap: 50px;
    }
    
    .digital-featured {
        flex: 0 0 60%;
    }
    
    .digital-featured-card {
        position: relative;
        height: 500px;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
        background: linear-gradient(135deg, #1e5799 0%, #2980b9 100%);
        background-size: cover;
        background-position: center;
        transition: background-image 0.5s ease;
    }
    
    .digital-featured-image {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    
    .digital-featured-icon {
        width: 150px;
        height: 150px;
        background: linear-gradient(135deg, #1e5799 0%, #2980b9 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 10px 40px rgba(30, 87, 153, 0.3);
        transition: all 0.3s ease;
    }
    
    .digital-featured-icon svg {
        width: 80px;
        height: 80px;
        stroke: #fff;
    }
    
    .digital-featured-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 40px 50px;
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
        color: #fff;
    }
    
    .digital-featured-tag {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 15px;
        display: inline-block;
        padding: 6px 16px;
        background: rgba(30, 87, 153, 0.6);
        border-radius: 20px;
    }
    
    .digital-featured-title {
        font-size: 28px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 20px;
        line-height: 1.4;
    }
    
    .digital-featured-summary {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.85);
        line-height: 1.8;
        margin-bottom: 30px;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .digital-featured-btn {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 14px 28px;
        background: #fff;
        color: #1e5799;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        border-radius: 30px;
        transition: all 0.3s ease;
    }
    
    .digital-featured-btn:hover {
        background: rgba(255, 255, 255, 0.9);
        transform: translateY(-3px);
        box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
    }
    
    .digital-list-right {
        flex: 0 0 40%;
    }
    
    .digital-timeline {
        display: flex;
        flex-direction: column;
        gap: 0;
    }
    
    .digital-timeline-item {
        position: relative;
        padding: 25px 0 25px 30px;
        border-left: 2px solid #e5e5e5;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .digital-timeline-item::before {
        content: '';
        position: absolute;
        left: -6px;
        top: 28px;
        width: 10px;
        height: 10px;
        background: #1e5799;
        border-radius: 50%;
        transition: all 0.3s ease;
    }
    
    .digital-timeline-item:hover,
    .digital-timeline-item.active {
        background: #fff;
        border-left-color: #1e5799;
    }
    
    .digital-timeline-item:hover::before,
    .digital-timeline-item.active::before {
        transform: scale(1.3);
        box-shadow: 0 0 10px rgba(30, 87, 153, 0.5);
    }
    
    .digital-item-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 15px;
        background: linear-gradient(135deg, #1e5799, #2980b9);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    .digital-timeline-item.active .digital-item-icon {
        transform: scale(1.1);
    }
    
    .digital-item-icon svg {
        width: 24px;
        height: 24px;
        stroke: #fff;
    }
    
    .digital-item-title {
        font-size: 18px;
        font-weight: 700;
        color: #1a1a1a;
        margin-bottom: 12px;
        line-height: 1.4;
        transition: color 0.3s ease;
    }
    
    .digital-timeline-item:hover .digital-item-title,
    .digital-timeline-item.active .digital-item-title {
        color: #1e5799;
    }
    
    .digital-item-summary {
        font-size: 14px;
        color: #666;
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    /* 新闻资讯响应式设计 */
    
    @media (max-width: 1200px) {
        .news-content {
            gap: 30px;
        }
        .news-featured {
            flex: 0 0 55%;
        }
        .news-list-right {
            flex: 0 0 45%;
        }
        .news-featured-card {
            height: 450px;
        }
        .news-featured-title {
            font-size: 24px;
        }
    }
    
    @media (max-width: 1024px) {
        .news-content {
            flex-direction: column;
        }
        .news-featured,
        .news-list-right {
            flex: none;
            width: 100%;
        }
        .news-section {
            padding: 60px 30px;
        }
        .news-header {
            flex-direction: column;
            gap: 20px;
            text-align: center;
        }
        .news-title {
            font-size: 36px;
        }
        .news-featured-card {
            height: 400px;
        }
        .news-featured-overlay {
            padding: 30px 40px;
        }
        .news-featured-title {
            font-size: 22px;
        }
        .news-featured-summary {
            font-size: 15px;
        }
        .timeline-title {
            font-size: 16px;
        }
        .product-content {
            flex-direction: column;
        }
        .product-section {
            padding: 60px 30px;
        }
        .product-title {
            font-size: 36px;
        }
        .company-intro {
            flex-direction: column;
        }
        .company-stats {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    
    @media (max-width: 1024px) {
        .digital-section {
            padding: 60px 30px;
        }
        .digital-content {
            flex-direction: column;
        }
        .digital-featured,
        .digital-list-right {
            flex: none;
            width: 100%;
        }
        .digital-featured-card {
            height: 400px;
        }
        .digital-title {
            font-size: 36px;
        }
        .digital-header {
            flex-direction: column;
            gap: 20px;
            text-align: center;
        }
    }
    
    @media (max-width: 768px) {
        .news-section {
            padding: 40px 20px;
        }
        .news-title {
            font-size: 28px;
            letter-spacing: 2px;
        }
        .news-header {
            padding-bottom: 15px;
            margin-bottom: 30px;
        }
        .news-more-link {
            font-size: 14px;
        }
        .news-featured-card {
            height: 350px;
            border-radius: 15px;
        }
        .news-featured-overlay {
            padding: 25px 30px;
        }
        .news-featured-date {
            font-size: 12px;
            padding: 5px 12px;
        }
        .news-featured-title {
            font-size: 18px;
            margin-bottom: 15px;
        }
        .news-featured-summary {
            font-size: 14px;
            margin-bottom: 20px;
            -webkit-line-clamp: 2;
        }
        .news-featured-btn {
            padding: 12px 20px;
            font-size: 14px;
        }
        .news-timeline-item {
            padding: 20px 0 20px 25px;
        }
        .news-timeline-item::before {
            width: 8px;
            height: 8px;
            left: -5px;
            top: 24px;
        }
        .timeline-date {
            font-size: 12px;
        }
        .timeline-title {
            font-size: 15px;
            margin-bottom: 10px;
        }
        .timeline-summary {
            font-size: 13px;
            -webkit-line-clamp: 1;
        }
        /* 数字科技化运营区域响应式 */
        .digital-section {
            padding: 40px 20px;
        }
        .digital-title {
            font-size: 28px;
            letter-spacing: 2px;
        }
        .digital-header {
            padding-bottom: 15px;
            margin-bottom: 30px;
        }
        .digital-more-link {
            font-size: 14px;
        }
        .digital-featured-card {
            height: 300px;
            border-radius: 15px;
        }
        .digital-featured-overlay {
            padding: 25px 30px;
        }
        .digital-featured-tag {
            font-size: 12px;
            padding: 5px 12px;
        }
        .digital-featured-title {
            font-size: 18px;
            margin-bottom: 15px;
        }
        .digital-featured-summary {
            font-size: 14px;
            margin-bottom: 20px;
            -webkit-line-clamp: 2;
        }
        .digital-featured-btn {
            padding: 12px 20px;
            font-size: 14px;
        }
        .digital-timeline-item {
            padding: 20px 0 20px 25px;
        }
        .digital-timeline-item::before {
            width: 8px;
            height: 8px;
            left: -5px;
            top: 24px;
        }
        .digital-item-title {
            font-size: 15px;
            margin-bottom: 10px;
        }
        .digital-item-summary {
            font-size: 13px;
            -webkit-line-clamp: 1;
        }
        .product-section {
            padding: 40px 20px;
        }
        .product-title {
            font-size: 28px;
        }
        .product-tabs {
            flex-wrap: wrap;
            gap: 15px;
        }
        .partners-section {
            padding: 40px 20px;
        }
        .partners-title {
            font-size: 28px;
        }
        .partner-logo {
            min-width: 100px;
            height: 60px;
            font-size: 14px;
            padding-right: 20px;
        }
        .slogan-text {
            font-size: 16px;
        }
        .company-section {
            padding: 50px 16px;
        }
        .company-intro-title {
            font-size: 32px;
        }
        .company-intro-text {
            font-size: 16px;
            line-height: 1.7;
        }
        .company-intro-btn {
            font-size: 16px;
            padding: 12px 24px;
        }
        .company-stats {
            grid-template-columns: 1fr;
        }
        .stat-number {
            font-size: 28px;
        }
        /* showcase区域响应式 */
        /* .showcase-section {
            height: 200vh;
        } */
        .showcase-card-content {
            left: 30px;
            bottom: 60px;
            max-width: 90%;
        }
        .showcase-title {
            font-size: 28px;
        }
        .showcase-desc {
            font-size: 14px;
        }
        .showcase-btn {
            padding: 12px 25px;
            font-size: 14px;
        }
        /* company-image响应式 */
        .company-image-wrapper {
            height: 400px;
        }
    }
    
    @media (max-width: 480px) {
        .carousel-content h1 {
            font-size: 24px;
            letter-spacing: 2px;
        }
        .carousel-content h3 {
            font-size: 14px;
        }
        .news-featured-card {
            height: 280px;
        }
        .digital-featured-card {
            height: 250px;
        }
        .partner-logo {
            min-width: 80px;
            font-size: 12px;
        }
    }