/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 40px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #e63946;
}

/* 页头样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo img {
    max-height: 60px;
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav ul li {
    margin-left: 30px;
}

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

.nav ul li a:hover,
.nav ul li a.active {
    color: #e63946;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.mobile-menu ul {
    list-style: none;
    padding: 20px 0;
}

.mobile-menu ul li {
    text-align: center;
    padding: 10px 0;
}

.mobile-menu ul li a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
}

.mobile-menu ul li a:hover,
.mobile-menu ul li a.active {
    color: #e63946;
}

/* 首页大图样式 */
.hero {
    margin-top: 80px;
    position: relative;
    height: 600px;
    overflow: hidden;
}

.hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 24px;
}

/* 产品介绍样式 */
.products {
    padding: 80px 0;
    background-color: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.product-item {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.product-item h3 {
    font-size: 18px;
    margin: 15px;
    color: #333;
}

.product-item p {
    font-size: 14px;
    color: #666;
    margin: 0 15px 15px;
}

/* 产品特色样式 */
.features {
    padding: 80px 0;
    background-color: #f0f0f0;
}

.features-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: #e63946;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    max-width: 40px;
    max-height: 40px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    font-size: 14px;
    color: #666;
}

/* 新闻资讯样式 */
.news {
    padding: 80px 0;
    background-color: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.news-item {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.news-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-item h3 {
    font-size: 18px;
    margin: 15px;
    color: #333;
}

.news-date {
    font-size: 12px;
    color: #999;
    margin: 0 15px 10px !important;
}

.news-item p {
    font-size: 14px;
    color: #666;
    margin: 0 15px 15px;
}

/* 用户评价样式 */
.reviews {
    padding: 80px 0;
    background-color: #f0f0f0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.review-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.reviewer-info {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.reviewer-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.reviewer-info h4 {
    font-size: 16px;
    color: #333;
}

.review-stars {
    font-size: 18px;
    color: #ffd700;
    margin-bottom: 15px;
}

.review-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* 友情链接样式 */
.links {
    padding: 40px 0;
    background-color: #fff;
}

.links h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
}

.links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.links-list a {
    text-decoration: none;
    color: #666;
    font-size: 14px;
    transition: color 0.3s;
}

.links-list a:hover {
    color: #e63946;
}

/* 页脚样式 */
.footer {
    padding: 20px 0;
    background-color: #333;
    color: #fff;
    text-align: center;
}

.footer p {
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        height: 400px;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-content p {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .products,
    .features,
    .news,
    .reviews {
        padding: 60px 0;
    }
    
    .products-grid,
    .features-content,
    .news-grid,
    .reviews-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 300px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .products-grid,
    .features-content,
    .news-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
}