* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        }
        body {
            color: #333;
            line-height: 1.8;
            background: #fff;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        .container {
            width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        @media (max-width: 1200px) {
            .container {
                width: 100%;
            }
        }

        /* 顶部导航 */
        .header {
            width: 100%;
            background: #082b6d;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 999;
            box-shadow: 0 2px 10px rgba(0,0,0,0.15);
        }
        .nav {
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 26px;
            color: #fff;
            font-weight: bold;
        }
        .logo span {
            color: #40a9ff;
        }
        .nav-list {
            display: flex;
        }
        .nav-list li {
            margin: 0 16px;
        }
        .nav-list li a {
            color: #fff;
            font-size: 16px;
            padding: 8px 0;
            transition: 0.3s;
        }
        .nav-list li a:hover {
            color: #40a9ff;
        }
        .nav-tel {
            color: #40a9ff;
            font-size: 18px;
            font-weight: bold;
        }
        .menu-btn {
            display: none;
            color: #fff;
            font-size: 26px;
        }
        .header-space {
            height: 70px;
        }

        /* 首屏Banner 文字居中 */
        .banner {
            width: 100%;
            height: 540px;
            background: linear-gradient(120deg, #082b6d 0%, #104099 100%);
            display: flex;
            align-items: center;
            color: #fff;
        }
        .banner-text {
            text-align: center;
            margin: 0 auto;
        }
        .banner-text h1 {
            font-size: 46px;
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .banner-text p {
            font-size: 18px;
            color: #e0e8f5;
            max-width: 750px;
            margin: 0 auto 35px;
        }
        .ai-platform {
            display: flex;
            gap: 25px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 40px;
        }
        .ai-platform span {
            font-size: 17px;
            padding: 6px 18px;
            border: 1px solid #ffffff60;
            border-radius: 30px;
        }
        .btn {
            display: inline-block;
            padding: 13px 32px;
            background: #40a9ff;
            border-radius: 4px;
            font-size: 17px;
            font-weight: 500;
            transition: 0.3s;
        }
        .btn:hover {
            background: #1890ff;
        }

        /* 数据统计区块 */
        .data-box {
            padding: 60px 0;
            background: #f5f7fa;
        }
        .data-list {
            display: flex;
            justify-content: space-around;
            text-align: center;
        }
        .data-item h2 {
            font-size: 42px;
            color: #082b6d;
            margin-bottom: 8px;
        }
        .data-item p {
            font-size: 16px;
            color: #666;
        }

        /* 通用区块样式 */
        .section {
            padding: 70px 0;
        }
        .section-gray {
            background: #f5f7fa;
        }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 34px;
            color: #082b6d;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 16px;
            color: #666;
        }

        /* GEO介绍 两行两列 每行2个卡片 */
        .geo-intro {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .intro-card {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            padding: 30px;
            border-radius: 8px;
        }
        .intro-card h3 {
            font-size: 20px;
            color: #082b6d;
            margin-bottom: 12px;
        }

        /* 服务列表 */
        .service-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-item {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            padding: 35px 25px;
            border-radius: 8px;
            transition: transform 0.3s;
        }
        .service-item:hover {
            transform: translateY(-6px);
        }
        .service-item h3 {
            font-size: 20px;
            color: #082b6d;
            margin-bottom: 12px;
        }

        /* 核心优势 */
        .adv-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }
        .adv-item {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            padding: 30px 20px;
            text-align: center;
            border-radius: 8px;
        }
        .adv-item h3 {
            font-size: 19px;
            color: #082b6d;
            margin-bottom: 10px;
        }

        /* 对比板块 */
        .compare-box {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            border-radius: 8px;
            overflow: hidden;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
        }
        .compare-table th,
        .compare-table td {
            padding: 18px;
            text-align: center;
            border: 1px solid #eee;
        }
        .compare-table th {
            background: #082b6d;
            color: #fff;
            font-size: 17px;
        }

        /* 案例板块 */
        .case-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .case-item {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            border-radius: 8px;
            overflow: hidden;
        }
        .case-img {
            width: 100%;
            height: 200px;
            background: #40a9ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            font-weight: bold;
        }
        .case-text {
            padding: 25px;
        }
        .case-text h3 {
            font-size: 20px;
            color: #082b6d;
            margin-bottom: 12px;
        }

        /* 流程板块 */
        .flow-list {
            display: flex;
            justify-content: space-between;
        }
        .flow-item {
            text-align: center;
            flex: 1;
            position: relative;
        }
        .flow-item:not(:last-child)::after {
            content: "";
            position: absolute;
            top: 30px;
            right: -15px;
            width: 30px;
            height: 2px;
            background: #40a9ff;
        }
        .flow-num {
            width: 60px;
            height: 60px;
            line-height: 60px;
            border-radius: 50%;
            background: #082b6d;
            color: #fff;
            font-size: 22px;
            margin: 0 auto 15px;
        }
        .flow-item h3 {
            color: #082b6d;
            font-size: 18px;
        }

        /* 资讯板块 */
        .news-list {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            border-radius: 8px;
            padding: 30px;
        }
        .news-item {
            padding: 15px 0;
            border-bottom: 1px dashed #eee;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item h3 {
            font-size: 18px;
            color: #082b6d;
            margin-bottom: 8px;
        }

        /* 行业板块 */
        .trade-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }
        .trade-item {
            padding: 10px 22px;
            background: #fff;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            border-radius: 4px;
        }

        /* FAQ板块 */
        .faq-list {
            background: #fff;
            box-shadow: 0 4px 18px rgba(0,0,0,0.08);
            border-radius: 8px;
            padding: 30px;
        }
        .faq-item {
            margin-bottom: 20px;
        }
        .faq-item h4 {
            color: #082b6d;
            font-size: 17px;
            margin-bottom: 8px;
        }

        /* 联系板块 */
        .contact {
            background: #082b6d;
            color: #fff;
            text-align: center;
            padding: 70px 0;
        }
        .contact h2 {
            font-size: 34px;
            margin-bottom: 20px;
        }
        .contact-tel {
            font-size: 38px;
            color: #40a9ff;
            font-weight: bold;
            margin: 25px 0;
        }

        /* 页脚 */
        .footer {
            background: #051f4e;
            color: #999;
            text-align: center;
            padding: 40px 0;
        }

        /* 移动端样式 */
        .float-tel {
            display: none;
            position: fixed;
            right: 20px;
            bottom: 30px;
            width: 55px;
            height: 55px;
            background: #40a9ff;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            z-index: 998;
        }
        @media (max-width: 768px) {
            .nav-list, .nav-tel {
                display: none;
            }
            .menu-btn {
                display: block;
            }
            .banner {
                height: 420px;
            }
            .banner-text h1 {
                font-size: 30px;
            }
            /* 手机端GEO介绍改为单列 */
            .geo-intro {
                grid-template-columns: 1fr;
            }
            .service-list, .case-list {
                grid-template-columns: 1fr;
            }
            .adv-list {
                grid-template-columns: repeat(2,1fr);
            }
            .flow-list {
                flex-direction: column;
                gap: 30px;
            }
            .flow-item::after {
                display: none;
            }
            .float-tel {
                display: flex;
            }
            .section {
                padding: 50px 0;
            }
            .section-title h2 {
                font-size: 26px;
            }
        }