/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* 头部样式 */
header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

header h1 {
    font-size: 1.5rem;
}

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

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #3498db;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* 英雄区域 */
#hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 4rem 0;
}

#hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

#hero p {
    font-size: 1.2rem;
}

/* 内容区域 */
section {
    padding: 4rem 0;
}

section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: #2c3e50;
}

/* 公司简介 */
#about {
    background-color: #f8f9fa;
}

#about .container {
    max-width: 800px;
    text-align: center;
}

/* 服务范围 */
.service-list {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

.service-item {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    flex: 1;
    min-width: 250px;
    transition: transform 0.3s;
}

.service-item:hover {
    transform: translateY(-5px);
}

.service-item h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* 联系我们 */
.contact-info {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-info p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* 页脚 */
footer {
    background-color: #34495e;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

footer a {
    color: white;
    text-decoration: underline;
}

footer a[href*="miit"] {
    color: white;
    text-decoration: underline;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        padding: 1rem 0;
    }
    
    nav ul {
        margin-top: 1rem;
    }
    
    nav ul li {
        margin: 0 1rem;
    }
    
    #hero h2 {
        font-size: 2rem;
    }
    
    .service-list {
        flex-direction: column;
    }
    
    section {
        padding: 2rem 0;
    }
}