/* 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;
}

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

/* 导航栏样式 */
header {
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    margin-left: 30px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

.menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(44, 62, 80, 0.7), rgba(44, 62, 80, 0.7)), url('bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

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

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    padding: 15px 30px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.cta-button:hover {
    background: #2980b9;
}

/* 关于我们部分 */
.about {
    padding: 100px 0;
    background: #f9f9f9;
}

.about h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-stats {
    flex: 1;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 36px;
    color: #3498db;
    margin-bottom: 10px;
}

/* 产品服务部分 */
.products {
    padding: 100px 0;
}

.products h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
}

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

.product-card {
    padding: 30px;
    text-align: center;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-card i {
    font-size: 40px;
    color: #3498db;
    margin-bottom: 20px;
}

/* 联系我们部分 */
.contact {
    padding: 100px 0;
    background: #f9f9f9;
}

.contact h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 36px;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

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

.info-item i {
    font-size: 24px;
    color: #3498db;
    margin-right: 15px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    padding: 15px 30px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #2980b9;
}

/* 页脚样式 */
footer {
    background: #2c3e50;
    color: white;
    padding: 20px 0;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .menu-btn {
        display: block;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-content p {
        font-size: 18px;
    }

    .about-content,
    .contact-content {
        flex-direction: column;
    }

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