/* 基本样式 */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

/* 导航栏 */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #333;
  padding: 10px 20px;
}

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

nav .nav-links {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

nav .nav-links li {
  margin-left: 20px;
}

nav .nav-links a {
  color: #fff;
  text-decoration: none;
  font-size: 18px;
}

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

/* 主页 */
.hero {
  background: url('hero-bg.jpg') no-repeat center center/cover;
  color: #fff;
  text-align: center;
  padding: 100px 20px;
}

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

.hero p {
  font-size: 24px;
  margin-bottom: 40px;
}

.hero .btn {
  background-color: #007BFF;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  font-size: 18px;
}

.hero .btn:hover {
  background-color: #0056b3;
}

/* 关于我们 */
.about {
  padding: 50px 20px;
  text-align: center;
}

.about h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.about p {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto;
}

/* 服务 */
.services {
  padding: 50px 20px;
  text-align: center;
  background-color: #f4f4f4;
}

.services h2 {
  font-size: 36px;
  margin-bottom: 40px;
}

.service-list {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}

.service-item {
  background-color: #fff;
  padding: 20px;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 30%;
  margin-bottom: 20px;
}

.service-item h3 {
  font-size: 24px;
  margin-bottom: 10px;
}

.service-item p {
  font-size: 16px;
}

/* 联系我们 */
.contact {
  padding: 50px 20px;
  text-align: center;
}

.contact h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

.contact form {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.contact label {
  display: block;
  margin-bottom: 5px;
  font-size: 18px;
}

.contact input, .contact textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.contact button {
  background-color: #007BFF;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  font-size: 18px;
  cursor: pointer;
}

.contact button:hover {
  background-color: #0056b3;
}

/* 页脚 */
footer {
  background-color: #333;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: 50px;
}

footer p {
  margin: 0;
}