* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        header {
            width: 100%;
            height: 680px;
            background: url('../images/bg.png') center / cover no-repeat;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding-top: 80px;
        }

        .nav {
            width: 100%;
            max-width: 1200px;
            height: 80px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 0 auto;
            padding: 0 20px;
        }

        .nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: transparent;
            transition: background 0.3s ease;
            z-index: 1000;
        }

        .nav::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: transparent;
            transition: background 0.3s ease;
            z-index: -1;
            pointer-events: none;
        }

        .nav.scrolled::before {
            background: white;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .nav-wrapper.scrolled {
            background: white;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .meun {
            display: flex;
            justify-content: space-between;
            color: #0f172a;
            font-family: "Alibaba PuHuiTi";
            font-size: 16px;
            font-style: normal;
            font-weight: 400;
            line-height: normal;
            gap: 30px
        }

        .meun a {
            color: black;
            text-decoration: none;
            position: relative;
            padding-bottom: 8px;
            transition: color 0.2s ease-out;
        }

        .meun a:hover {
            color: #1677FF;
        }

        .meun a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: #1677FF;
            transition: width 0.3s ease-out;
        }

        .meun a.active::after {
            width: 100%;
            left: 0;
            transform: translateX(0);
        }

        .meun a:hover::after {
            width: 100%;
        }

        .meun a.active {
            color: #1677FF;
        }



        .nav-actions {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .nav-action-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
        }

        .nav-action-item.wechat {
            background: #07C160;
            position: relative;
        }

        .nav-action-item.download {
            background: #1E98D7;
            position: relative;
        }

        .qrcode-popup {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            margin-top: 12px;
            background: white;
            border-radius: 12px;
            padding: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            z-index: 100;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.2s, visibility 0.2s;
        }

        .nav-action-item.wechat:hover .qrcode-popup {
            opacity: 1;
            visibility: visible;
        }

        .qrcode-popup img {
            width: 140px;
            height: 140px;
            display: block;
        }

        .qrcode-text {
            font-size: 12px;
            color: #333;
            text-align: center;
            margin-top: 8px;
            margin-bottom: 0;
        }

        .nav-action-item.download:hover .qrcode-popup {
            opacity: 1;
            visibility: visible;
        }

        .download-popup {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .qrcode-popup img {
            width: 120px;
            height: 120px;
            display: block;
        }

        .nav-action-text {
            color: #ffffff;
            font-size: 14px;
            font-weight: 500;
        }

        .center {
            text-align: center;
            margin-top: 100px;
        }

        .cent-title {
            margin-bottom: 24px;
            display: flex;
            justify-content: space-between;
        }

        .cent-title img {
            height: 90px;
            width: 935px;
        }

        .cent-title span:first-child {
            font-size: 48px;
            font-weight: 700;
            color: #0066cc;
            display: block;
            line-height: 1.2;
            margin-right: 50px
        }

        .cent-title span:last-child {
            font-size: 48px;
            font-weight: 700;
            color: #0a2b3e;
            display: block;
        }

        .center>div:last-child {
            font-size: 16px;
            color: #5a6874;
            line-height: 1.8;
            max-width: 600px;
            margin: 0 auto;
            padding-bottom: 96px;
        }

        .btn {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 50px;
        }

        .btn>div {
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn>div:first-child {
            color: #1677FF;
            border: none;
            border: 1.5px solid #1677FF;
        }

        .btn>div:last-child {
            background: #1677FF;
            color: white;

        }

        .btn>div:first-child:hover {
            background: #1677FF;
            color: white;

        }

        .btn>div:last-child:hover {
            background: white;
            color: #1677FF;
        }

        /* 集团简介 */
        .about {
            padding: 80px 20px;
            height: 804px;
            flex-direction: column;
            justify-content: center;
            position: relative;

        }

        .about-title {
            color: #0f172a;
            text-align: center;
            font-family: "Alibaba PuHuiTi";
            font-size: 48px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
            padding-bottom: 65px;
        }

        .about-cards {
            display: flex;
            justify-content: space-between;
            align-items: stretch;
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .card:first-child,
        .card:nth-child(2) {
            flex: 1;
        }

        .card:last-child {
            width: 280px;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            align-self: center;

        }

        .card:last-child .back-to-top {
            margin-top: auto;
        }

        .cardImg {
            width: 100%;
            height: auto;
            border-radius: 12px;
            flex: 1;
        }

        .core-title {
            align-self: stretch;
            color: #0f172a;
            font-family: "Alibaba PuHuiTi";
            font-size: 40px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
        }

        .core-subtitle {
            align-self: stretch;
            color: #0f172a;
            font-family: "Alibaba PuHuiTi";
            font-size: 40px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
        }

        .core-desc {
            align-self: stretch;
            color: #4a5565;
            text-align: justify;
            font-family: "Alibaba PuHuiTi";
            font-size: 18px;
            font-style: normal;
            font-weight: 400;
            line-height: 29px;
            margin-top: 44px;
        }

        .contact-hotline {
            width: 120px;
            height: 167px;
            background-color: #ffffff;
            box-shadow: 0 4px 10px 0 #00449214;
            text-align: center;
            margin-bottom: 20px;
            cursor: pointer;
            transition: background 0.3s ease-out;
            padding: 8px;
            border-radius: 60px 60px 8px 8px;
        }

        .contact-hotline:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        /* 返回顶部按钮默认隐藏 */
        .back-to-top {
            border-radius: 8px;
            width: 120px;
            height: 40px;
            background-color: #FFF;
            box-shadow: 0 4px 10px 0 #00449214;

            text-align: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease-out, visibility 0.3s ease-out;
        }

        /* 返回顶部按钮显示状态 */
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            cursor: pointer;
        }

        .back-to-top a {
            color: #4E5A6A;
            text-decoration: none;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hotline-label {
            font-size: 14px;
            color: #8a9ab0;
            margin-bottom: 8px;
        }

        .hotline-number {
            font-size: 14px;
            font-weight: 700;
            color: #4E5A6A;
        }

        .contact-qrcode {
            width: 120px;
            height: 140px;
            border-radius: 8px;
            background-color: #FFF;
            box-shadow: 0 4px 10px 0 #00449214;

            text-align: center;
            margin-bottom: 24px;
        }

        .contact-qrcode img {
            width: 100px;
            height: 100px;
            margin-bottom: 2px;
            margin-top: 8px;
        }

        .contact-qrcode p {
            font-size: 14px;
            color: #333;
        }

        .back-to-top {
            text-align: center;
        }


        .side-card .back-to-top img {
            vertical-align: middle;
        }

        .side-card .back-to-top a {
            vertical-align: middle;
        }

        .side-card .back-to-top {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .side-card {
            position: fixed;
            top: 30%;
            transform: translateY(-50%);
            width: 280px;
            display: flex;
            flex-direction: column;
            z-index: 999;
            /* right: calc((100% - 1920px) / 2 + 0px); */
            left: calc(50% + 600px + 20px);
        }

        @media (max-width: 1240px) {
            .side-card {
                right: 20px;
            }
        }

        @media (max-width: 768px) {
            .side-card {
                position: relative;
                right: auto;
                top: auto;
                transform: none;
                width: 100%;
                margin-top: 40px;
                order: 999;
            }
        }

        .side-card .back-to-top {
            margin-top: auto;

        }

        /* 核心品牌商标 */
        .trademark {
            display: flex;
            padding: 96px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            align-self: stretch;
            background: #F0F5FF
        }

        .trademark-title {
            color: #0f172a;
            text-align: center;
            font-family: "Alibaba PuHuiTi";
            font-size: 48px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
        }

        .trademark-text {
            margin-top: 17px;
            display: flex;
            height: 32px;
            padding: 0 25.75px 0 28.25px;
            justify-content: center;
            align-items: center;
        }

        .trademark-img {
            display: flex;
            justify-content: space-between;
            flex-shrink: 0;
            border-radius: 16px;
            gap: 24px;
            padding: 24px;
        }

        .trademark-grid {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        /* 核心品牌商标卡片*/
        .trademark-item {
            width: 284px;
            text-align: center;
            padding: 10px;
            border-radius: 16px;
            background: #FFF;
            box-shadow: 0 12px 24px 0 #1677ff14;
            transition: transform 0.4s ease-out, box-shadow 0.4s ease-out;
            overflow: hidden;
            position: relative;
        }

        .trademark-item:hover {
            transform: translateY(-16px);
            box-shadow: 0 24px 40px rgba(22, 119, 255, 0.2);
        }

        .trademark-item img {
            margin-top: 15px;
            transition: transform 0.5s ease-out, width 0.5s ease-out, height 0.5s ease-out;
            width: 100%;
            /* width: auto; */
            height: auto;
            flex-shrink: 0;
        }

        .trademark-item:hover img {
            transform: scale(1.1);
        }

        .trademark-item .item-name,
        .trademark-item .item-desc {
            transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
            flex-shrink: 0;
        }

        .trademark-item:hover .item-name,
        .trademark-item:hover .item-desc {
            opacity: 0;
            visibility: hidden;
        }

        .trademark-item {
            display: flex;
            flex-direction: column;
        }

        .item-name {
            font-size: 16px;
            font-weight: 600;
            margin: 12px 0 8px;
        }

        .item-desc {
            font-size: 13px;
            color: #666;
        }

        /* 核心优势 */
        .advantage {
            display: flex;
            padding: 96px 0;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            align-self: stretch;
        }

        .advantage-title {
            color: #101828;
            text-align: center;
            font-family: "Alibaba PuHuiTi";
            font-size: 48px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
        }

        .advantage-text {
            margin-top: 20px;
            margin-bottom: 62px;
            display: flex;
            height: 32px;
            padding: 0 25.75px 0 28.25px;
            justify-content: center;
            align-items: center;
        }

        .advantage-img {
            display: flex;
            justify-content: space-between;
            flex-shrink: 0;
            border-radius: 16px;
            gap: 24px;
            padding: 24px;
        }

        .advantage-grid {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .advantage-item {
            /* flex: 1;
            width: 284px;
            text-align: center;
            padding: 20px;
            flex-shrink: 0;
            border-radius: 16px;
            background: #FFF;
            box-shadow: 0 12px 24px 0 #1677ff14; */

            flex: 1;
            width: 284px;
            text-align: center;
            padding: 20px;
            flex-shrink: 0;
            border-radius: 16px;
            background: #FFF;
            box-shadow: 0 12px 24px 0 #1677ff14;
            transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, background 0.3s ease-out;
        }

        .advantage-item.animated {
            opacity: 1;
            transform: translateY(0);
        }

        .advantage-item:nth-child(1).animated {
            transition-delay: 0s;
        }

        .advantage-item:nth-child(2).animated {
            transition-delay: 0.1s;
        }

        .advantage-item:nth-child(3).animated {
            transition-delay: 0.2s;
        }

        .advantage-item:nth-child(4).animated {
            transition-delay: 0.3s;
        }

        .advantage-item:hover {
            transform: translateY(-16px);
            box-shadow: 0 24px 40px rgba(0, 0, 0, 0.15);
            background: #ffffff;
        }

        .advantage-item:nth-child(1):hover .item-name,
        .advantage-item:nth-child(1):hover .item-desc {
            color: #1677FF;
        }

        .advantage-item:nth-child(3):hover .item-name,
        .advantage-item:nth-child(3):hover .item-desc {
            color: #1677FF;
        }

        .advantage-item:nth-child(odd) {
            background: #ffffff;
            color: #000000;
        }

        .advantage-item:nth-child(even) {
            background: #5FA4FF;
            color: #ffffff;
        }

        .advantage-item .item-name,
        .advantage-item .item-desc {
            color: inherit;
        }

        /* 旗下企业 */


        .Subsidiaries {
            display: flex;
            padding: 96px 0;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            align-self: stretch;
        }

        .Subsidiaries-title {
            color: #0f172a;
            text-align: center;
            font-family: "Alibaba PuHuiTi";
            font-size: 48px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
        }

        .Subsidiaries-text {
            margin-top: 20px;
            margin-bottom: 62px;
            display: flex;
            height: 32px;
            padding: 0 25.75px 0 28.25px;
            justify-content: center;
            align-items: center;
        }

        .Subsidiaries-img {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            justify-content: center;
            gap: 24px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .Subsidiaries-item {
            display: flex;
            align-items: center;
            flex: 1;
            padding: 20px;
            border-radius: 16px;
            background: #F4F9FF;
            transition: transform 0.3s ease-out, box-shadow 0.3s ease-out, background 0.3s ease-out;
        }

        .Subsidiaries-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.1);
            background: #ffffff;
        }

        .Subsidiaries-item:hover .right-top {
            color: #1677FF;
            transition: color 0.3s ease-out;
        }

        .right {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .right-top {
            white-space: nowrap;
            flex: 1;
            padding: 20px;
            width: 263.42px;
            color: #0f172a;
            font-family: "Alibaba PuHuiTi";
            font-size: 18px;
            font-style: normal;
            font-weight: 700;
            line-height: normal;
        }

        .right-bottom {
            flex: 1;
            padding: 20px;
            width: 370px;
            color: #4e5a6a;
            text-align: justify;
            font-family: "Alibaba PuHuiTi";
            font-size: 16px;
            font-style: normal;
            font-weight: 400;
            line-height: 24px;
        }

        @media (max-width: 768px) {
            .grid-container {
                grid-template-columns: 1fr;
            }
        }

        .business {
            display: flex;
            padding: 96px 0;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 64px;
            align-self: stretch;
            background: #F0F5FF;
        }

        /* 核心业务板块 */

        .core-business {
            padding: 80px 20px;
            background: #F0F5FF;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-title {
            color: #0f172a;
            text-align: center;
            font-family: "Alibaba PuHuiTi";
            font-size: 48px;
            font-style: normal;
            font-weight: 700;
            line-height: 48px;
            margin-bottom: 64px;
        }

        .business-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .business-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 28px;
            /* transition: transform 0.2s, box-shadow 0.2s; */
            transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        .business-card img {
            width: 48px;
            height: auto;
            object-fit: contain;
            margin-bottom: 16px;
        }

        .business-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
        }

        .business-name {
            font-size: 20px;
            font-weight: 600;
            color: #1677FF;
            margin-bottom: 16px;
        }

        .business-desc {
            font-size: 14px;
            color: #5a6874;
            line-height: 1.7;
        }

        @media (max-width: 900px) {
            .business-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 600px) {
            .business-grid {
                grid-template-columns: 1fr;
            }
        }

        /* footer */
        .footer {
            background: #001529;
            padding: 60px 20px 40px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding: 96px 0;
        }

        .footer-col {
            flex: 1;
            min-width: 160px;
        }

        .footer-col:first-child {
            text-align: left;
            margin-right: 137px;
        }

        .footer-logo-img {
            height: 48px;
            margin-bottom: 20px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #D1D5DC;
            margin-bottom: 16px;
        }

        .footer-website {
            font-size: 14px;
            color: #D1D5DC;
        }

        .footer-website a {
            color: #D1D5DC;
            text-decoration: none;
        }

        .footer-website a:hover {
            color: #0066cc;
        }

        .footer-title {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-link {
            margin-bottom: 12px;
        }

        .footer-link a {
            color: #b0c4de;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-link a:hover {
            color: #0066cc;
        }

        @media (max-width: 900px) {
            .footer-container {
                flex-direction: column;
                gap: 32px;
            }
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin-top: 40px;
            padding-top: 30px;

            color: #85848a;
            text-align: center;
            font-family: "Alibaba PuHuiTi 3.0";
            font-size: 14px;
            font-style: normal;
            font-weight: 55 Regular;
            line-height: 22px;
        }

        .footer-bottom-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: #85848A;
        }

        .containerImg {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .containerImg img {
            width: 16px;
            height: 16px;
            display: block;
        }

        /* ----------------------------------------------------------- */
        :root {
            --ease-out: ease-out;
            --duration-hover: 200ms;
            --duration-enter: 500ms;
        }

        .meun a,
        .btn>div,
        .business-card,
        .nav-action-item,
        .footer-link a,
        .back-to-top a,
        .advantage-item,
        .trademark-item {
            transition: all var(--duration-hover) var(--ease-out);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .about,
        .trademark,
        .advantage,
        .Subsidiaries,
        .core-business,
        .footer {
            opacity: 1;
            transform: translateY(0);
            transition: opacity var(--duration-enter) var(--ease-out),
                transform var(--duration-enter) var(--ease-out);
        }

        .about.animated,
        .trademark.animated,
        .advantage.animated,
        .Subsidiaries.animated,
        .core-business.animated,
        .footer.animated {
            opacity: 1;
            transform: translateY(0);
        }

        /* footer第三列 */
        .footer-col .footer-link {
            display: flex;
            align-items: flex-start;
            margin-bottom: 12px;
            color: #d1d5dc;
            font-family: "Alibaba PuHuiTi";
            font-size: 16px;
            font-style: normal;
            font-weight: 400;
            line-height: 24px;
        }

        .footer-col .footer-icon {
            width: 20px;
            height: 20px;
            margin-right: 8px;
            flex-shrink: 0;
        }

        .footer-col .footer-label {
            width: 70px;
            color: #d7d7d7;
            font-size: 14px;
            flex-shrink: 0;
            font-family: "Alibaba PuHuiTi";
        }

        .footer-col .footer-value {
            color: #d7d7d7;
            font-size: 14px;
            line-height: 1.5;
            flex: 1;
            font-family: "Alibaba PuHuiTi";
        }

        .footer-col .address-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-col .address-list p {
            margin: 0;
            white-space: nowrap;
        }

        .footer-col .address-list p:not(:last-child)::after {
            color: #b0c4de;
            margin-left: 8px;
        }

        /* 商务合作弹框 */
        /* 弹窗样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 10000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background-color: #fff;
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            position: relative;
            width: 300px;
        }

        .close {
            position: absolute;
            top: 10px;
            right: 15px;
            font-size: 24px;
            cursor: pointer;
            color: #999;
        }

        .close:hover {
            color: #333;
        }

        .adree {
            color: #b0c4de;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;


        }