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

body {
    font-family: 'Arial', sans-serif;
    color: #333;
    line-height: 1.6;
}

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

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 24px;
    color: #333;
}

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

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

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

nav ul li a:hover {
    color: #0066cc;
}

/* 下拉菜单 */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 10px 0;
    min-width: 150px;
    display: none;
}

nav ul li:hover .submenu {
    display: block;
}

.submenu li {
    margin: 0;
    padding: 0 20px;
}

.submenu li a {
    display: block;
    padding: 8px 0;
}

/* 英雄区域 */
.hero {
    position: relative;
    overflow: hidden;
    height: 500px;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slider-container {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.slider-slide {
    flex: 0 0 100%;
    height: 100%;
}

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

.slider-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.slider-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.slider-content p {
    font-size: 24px;
    margin-bottom: 30px;
}

/* 产品中心 */
.products {
    padding: 60px 0;
    text-align: center;
}

.products h2 {
    font-size: 30px;
    margin-bottom: 10px;
    color: #333;
}

.products > p {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.product-item {
    background-color: #f9f9f9;
    padding: 30px;
    text-align: center;
    border-radius: 8px;
    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: 80px;
    height: 80px;
    margin-bottom: 20px;
    object-fit: contain;
}

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

/* 优势区域 */
.advantages {
    background-color: #f5f5f5;
    padding: 60px 0;
    text-align: center;
    color: #333;
}

.advantages h2 {
    font-size: 30px;
    margin-bottom: 10px;
    color: #333;
}

.advantages .container > p {
    font-size: 16px;
    color: #666;
    margin-bottom: 60px;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-item {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    text-align: left;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

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

.advantage-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

/* 合作伙伴 */
.partners {
    padding: 60px 0;
    text-align: center;
}

.partners h2 {
    font-size: 30px;
    margin-bottom: 20px;
    color: #333;
}

.partners p {
    font-size: 16px;
    color: #666;
}

/* 新闻区域 */
.news {
    background-color: #f5f5f5;
    padding: 60px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.news-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    position: relative;
}

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

.news-item .more {
    position: absolute;
    top: 30px;
    right: 30px;
    color: #0066cc;
    text-decoration: none;
}

/* 页脚 */
footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

footer p {
    font-size: 14px;
}

footer p a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    transition: border-bottom 0.3s;
}

footer p a:hover {
    border-bottom: 1px solid #fff;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        width: 95%;
    }
}

@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #fff;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        padding: 20px;
        display: none;
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .submenu {
        position: static;
        box-shadow: none;
        padding: 0 0 0 20px;
    }
}