/* 全局重置，避免冲突 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }
        body {
            color: #333;
            background: #f8f9fa;
        }
        /* Banner 区域（纯 img 标签实现） */
        .banner {
            width: 100%;
            position: relative;
        }
        .banner-img {
            width: 100%;
            height: 605px; /* 固定高度，适配任意图片尺寸 */
            object-fit: cover; /* 保证图片完整显示，不拉伸 */
            display: block; /* 消除图片底部空白 */
        }
        .banner-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: #fff;
            z-index: 2;
            background-color: rgb(8 36 79 / 50%); /* 浅蓝色，50% 透明度 */
        }
        .banner-content h1 {
            font-size: 36px;
            margin-bottom: 15px;
            font-weight: bold;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .banner-content p {
            font-size: 18px;
            margin-bottom: 30px;
            text-shadow: 0 1px 3px rgba(0,0,0,0.3);
        }
        .banner-content .btn {
            display: inline-block;
            padding: 12px 30px;
            background: #e53935;
            color: #fff;
            text-decoration: none;
            border-radius: 4px;
            font-size: 16px;
            font-weight: bold;
            box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }
        /* 面包屑导航（class="nav" 保留，移至 banner 下） */
        .nav {
            width: 100%;
            padding: 20px 8%;
            background: #fff;
            font-size: 14px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }
        .nav a {
            color: #666;
            text-decoration: none;
            margin-right: 8px;
        }
        .nav a:hover {
            color: #e53935;
        }
        .nav span {
            color: #999;
            margin: 0 5px;
        }
        .nav .current {
            color: #e53935;
            font-weight: bold;
        }
        /* 通用板块样式 */
        .section {
            width: 100%;
            padding: 60px 8%;
            background: #fff;
            margin-bottom: 20px;
        }
        .section-title {
            font-size: 28px;
            color: #333;
            text-align: center;
            margin-bottom: 40px;
            font-weight: bold;
            position: relative;
        }
        .section-title::after {
            content: "";
            display: block;
            width: 60px;
            height: 3px;
            background: #e53935;
            margin: 15px auto 0;
        }
        /* 应用场景板块 */
        .scene-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
        }
        .scene-item {
            width: calc(25% - 15px);
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .scene-item-img {
            width: 100%;
            height: 180px;
            margin-bottom: 15px;
            border-radius: 4px;
            overflow: hidden;
        }
        .scene-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover; /* 任意尺寸图片完整显示 */
            loading: lazy; /* 懒加载提升速度 */
        }
        .scene-item h3 {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
            font-weight: bold;
        }
        .scene-item ul {
            list-style: none;
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }
        /* 核心优势板块 */
        .advantage-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
        }
        .advantage-item {
            width: calc(33.33% - 15px);
            background: linear-gradient(180deg, #f8f9fa 0%, #eef1f5 100%);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
        }
        .advantage-item-img {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            border-radius: 50%;
            overflow: hidden;
        }
        .advantage-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            loading: lazy;
        }
        .advantage-item h3 {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
            font-weight: bold;
        }
        .advantage-item p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }
        /* 痛点解决方案板块 */
        .solution-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
        }
        .solution-text {
            width: calc(50% - 20px);
        }
        .solution-img {
            width: calc(50% - 20px);
            height: 100%;
            border-radius: 8px;
            overflow: hidden;
        }
        .solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            loading: lazy;
        }
        .solution-text h3 {
            font-size: 20px;
            color: #333;
            margin-bottom: 20px;
            font-weight: bold;
        }
        .solution-text ul {
            list-style: none;
            font-size: 16px;
            color: #666;
            line-height: 2;
        }
        .solution-text ul li {
            margin-bottom: 15px;
            position: relative;
            padding-left: 20px;
        }
        .solution-text ul li::before {
            content: "●";
            color: #e53935;
            position: absolute;
            left: 0;
        }
        .solution-text ul li strong {
            color: #333;
        }
        /* 一站式服务板块 */
        .service-list {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .service-item {
            width: calc(25% - 10px);
            text-align: center;
            position: relative;
        }
        .service-item::after {
            content: "→";
            position: absolute;
            right: -15px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            font-size: 20px;
        }
        .service-list .service-item:last-child::after {
            display: none;
        }
        .service-item-img {
            width: 100px;
            height: 100px;
            margin: 0 auto 15px;
            border-radius: 8px;
            overflow: hidden;
        }
        .service-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            loading: lazy;
        }
        .service-item h3 {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
            font-weight: bold;
        }
        .service-item p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
            padding: 0 10px;
        }
        /* 关于我们板块 */
        .about-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .about-text {
            width: calc(50% - 20px);
            font-size: 16px;
            color: #666;
            line-height: 1.8;
        }
        .about-text strong {
            color: #e53935;
        }
        .about-img {
            width: calc(50% - 20px);
            height: 300px;
            border-radius: 8px;
            overflow: hidden;
        }
        .about-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            loading: lazy;
        }
        /* 响应式适配 */
        @media (max-width: 992px) {
            .scene-item, .advantage-item, .service-item {
                width: calc(50% - 10px);
            }
            .solution-text, .solution-img, .about-text, .about-img {
                width: 100%;
            }
            .service-item::after {
                display: none;
            }
            .banner-content h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 576px) {
            .scene-item, .advantage-item, .service-item {
                width: 100%;
            }
            .banner-img {
                height: 580px; /* 移动端缩小 banner 高度 */
            }
            .banner-content h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 24px;
            }
        }