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

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "微软雅黑", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.header-top .email {
    color: #666;
    text-decoration: none;
}

.header-top .lang a {
    color: #777;
    text-decoration: none;
    margin-left: 10px;
}

.header-top .lang a:hover {
    color: #007bff;
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 60px;
}

.logo-text h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 5px;
}

.logo-text p {
    font-size: 14px;
    color: #666;
}

nav {
    display: flex;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #007bff;
}

.banner {
    position: relative;
    height: 400px;
    overflow: hidden;
}

.banner .swiper-container {
    width: 100%;
    height: 100%;
}

.banner .swiper-slide {
    width: 100%;
    height: 100%;
}

.banner .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner .swiper-pagination {
    bottom: 20px !important;
}

.banner .swiper-pagination-bullet {
    background: rgba(255, 255, 255, 0.5);
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.banner .swiper-pagination-bullet-active {
    background: #fff;
}

.banner .swiper-button-next,
.banner .swiper-button-prev {
    color: #fff;
}

.news-section {
    padding: 40px 0;
    background-color: #f8f9fa;
}

.news-section .container {
    display: flex;
    align-items: center;
    gap: 30px;
}

.news-icon {
    flex-shrink: 0;
}

.news-content {
    flex: 1;
}

.news-content h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.news-content .news-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px dashed #ddd;
}

.news-content .news-item a {
    color: #333;
    text-decoration: none;
    font-size: 16px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-content .news-item a:hover {
    color: #007bff;
}

.news-content .news-item .date {
    color: #999;
    font-size: 14px;
    margin-left: 20px;
}

.product-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    font-size: 16px;
    color: #999;
    letter-spacing: 5px;
}

.section-title .divider {
    width: 80px;
    height: 2px;
    background-color: #007bff;
    margin: 20px auto 0;
}

.product-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
}

.product-categories {
    border-right: 1px solid #eee;
    padding-right: 30px;
}

.product-categories h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #007bff;
}

.product-categories ul {
    list-style: none;
}

.product-categories li {
    margin-bottom: 15px;
}

.product-categories li a {
    text-decoration: none;
    color: #666;
    font-size: 15px;
    transition: color 0.3s;
}

.product-categories li a:hover {
    color: #007bff;
    padding-left: 5px;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-item {
    text-align: center;
    padding: 15px;
    border: 1px solid #eee;
    transition: box-shadow 0.3s;
}

.product-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.product-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    margin-bottom: 15px;
}

.product-item h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.product-item a {
    text-decoration: none;
    color: #333;
}

.product-item a:hover {
    color: #007bff;
}

footer {
    background-color: #1b1b1b;
    color: #fff;
    padding: 50px 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #a9a9a9;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #007bff;
}

.footer-contact {
    color: #f2f2f2;
    font-size: 14px;
    line-height: 2.2;
}

.footer-contact a {
    color: #f2f2f2;
    text-decoration: none;
}

.footer-contact a:hover {
    color: #007bff;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    color: #666;
    font-size: 13px;
}

.footer-bottom a {
    color: #666;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #007bff;
}

@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        gap: 20px;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .banner {
        height: 250px;
    }

    .news-section .container {
        flex-direction: column;
        text-align: center;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-categories {
        border-right: none;
        border-bottom: 1px solid #eee;
        padding-bottom: 20px;
        padding-right: 0;
    }

    .product-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}