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

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

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

/* 导航栏样式 */
header {
  background-color: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav {
  padding: 20px 0;
}

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

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

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

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

.nav-links a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #007bff;
}

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

section {
  padding: 80px 0;
}

.hero {
  background-color: #f8f9fa;
  text-align: center;
  padding: 120px 0;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  color: #333;
}

.hero p {
  font-size: 24px;
  color: #666;
}

.about,
.contact {
  background-color: #fff;
}

h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 36px;
  color: #333;
}

.about-content,
.contact-info {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p,
.contact-info p {
  margin-bottom: 20px;
  font-size: 18px;
  color: #666;
}

/* 页脚样式 */
footer {
  background-color: #333;
  color: #fff;
  padding: 40px 0;
  text-align: center;
}

footer p {
  margin-bottom: 10px;
}

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

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

  .hero p {
    font-size: 20px;
  }

  section {
    padding: 60px 0;
  }
}