@charset "utf-8";
 :root {
            --primary-blue: #0066cc;
            --primary-orange: #FF9800;
            --text-dark: #333;
            --text-grey: #666;
            --bg-light: #f9f9f9;
            --border-light: #eee;
            --container-width: 1480px;
        }
        * {
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Arial, sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            background: #fff;
        }
        .container-1480 {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 轮播图样式：无文字，固定高度，图片cover铺满 */
        .hero-slider {
            position: relative;
            width: 100%;
            height: 750px; /* 电脑端固定高度 */
            overflow: hidden;
        }
        .hero-slider .swiper-slide {
            position: relative;
            height: 100%;
            background: #f0f0f0;
        }
        .hero-slider .swiper-slide img {
            width: 100%;
            height: 100%;
            object-fit: cover; /* 铺满容器，可能裁剪边缘，但视觉效果好 */
            display: block;
        }
        .hero-slider .swiper-slide a {
            display: block;
            width: 100%;
            height: 100%;
        }
        /* 轮播导航按钮 */
        .hero-slider .swiper-button-prev,
        .hero-slider .swiper-button-next {
            color: #fff;
            background: rgba(0,0,0,0.3);
            width: 44px;
            height: 44px;
            border-radius: 50%;
            transition: 0.3s;
        }
        .hero-slider .swiper-button-prev:after,
        .hero-slider .swiper-button-next:after {
            font-size: 20px;
        }
        .hero-slider .swiper-button-prev:hover,
        .hero-slider .swiper-button-next:hover {
            background: rgba(0,102,204,0.8);
        }
        .hero-slider .swiper-pagination-bullet {
            background: #fff;
            opacity: 0.7;
        }
        .hero-slider .swiper-pagination-bullet-active {
            background: var(--primary-blue);
        }

        /* 产品网格（保持之前优化样式） */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin: 40px 0;
        }
        .product-card {
            display: block;
            text-decoration: none;
            color: inherit;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .product-card .img-box {
            aspect-ratio: 1/1;
            overflow: hidden;
        }
        .product-card .img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .product-card:hover .img-box img {
            transform: scale(1.05);
        }
        .product-card .info-box {
            padding: 20px 15px;
            text-align: center;
        }
        .product-name {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        .btn-view {
            display: inline-block;
            padding: 8px 25px;
            background: var(--primary-blue);
            color: #fff;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.3s;
        }
        .product-card:hover .btn-view {
            background: #0052a3;
        }

        /* 双按钮区域 */
        .dual-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 30px 0 50px;
            flex-wrap: wrap;
        }
        .dual-btns .btn {
            min-width: 220px;
            padding: 14px 30px;
            text-align: center;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: 0.3s;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary-blue);
            color: #fff;
        }
        .btn-primary:hover {
            background: #0052a3;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-dark);
            border-color: var(--primary-blue);
        }
        .btn-outline:hover {
            background: var(--primary-blue);
            color: #fff;
        }

        /* 栏目大标题样式：美观大气 */
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2,
        .section-header h3,
        .home-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-dark);
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 0;
            letter-spacing: 1px;
        }
        .section-header h2:after,
        .section-header h3:after,
        .home-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-blue);
            border-radius: 2px;
        }

        /* 联系我们横幅 */
        .contact-banner {
            background: linear-gradient(rgba(0,102,204,0.9), rgba(0,102,204,0.9)), url('/path/to/bg.jpg') center/cover;
            color: #fff;
            text-align: center;
            padding: 60px 20px;
            margin: 40px 0;
        }
        .contact-banner h3 {
            font-size: 2.2rem;
            margin-bottom: 10px;
        }
        .contact-banner p {
            font-size: 1.2rem;
            opacity: 0.95;
            margin-bottom: 30px;
        }

        /* 新闻列表：完全恢复旧版样式（使用原类名） */
        .news-list {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 30px;
        }
        .news-card {
            flex: 1 1 calc(25% - 30px);
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: 0.3s;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .news-img {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-content {
            padding: 20px 15px;
        }
        .news-date {
            color: var(--text-grey);
            font-size: 0.85rem;
            display: block;
            margin-bottom: 8px;
        }
        .news-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-title:hover {
            color: var(--primary-blue);
        }
        .news-description {
            color: var(--text-grey);
            font-size: 0.9rem;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .more-btn1 {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 500;
            display: inline-block;
        }
        .more-btn1:hover {
            text-decoration: underline;
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .hero-slider {
                height: 300px; /* 手机端高度 */
            }
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
            }
            .news-card {
                flex: 1 1 calc(50% - 30px);
            }
            .dual-btns {
                flex-direction: column;
                align-items: center;
            }
            .dual-btns .btn {
                width: 100%;
                max-width: 300px;
            }
            .contact-banner h3 {
                font-size: 1.8rem;
            }
            .section-header h2,
            .section-header h3,
            .home-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 640px) {
            .product-grid {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex: 1 1 100%;
            }
        }

        /* 保留其他原有样式兼容 */
        .l-wrap {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }