/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

/* 导航栏 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #333;
  color: white;
  padding: 1rem;
}

.logo img {
  height: 40px;
}

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

.nav-links li {
  margin-left: 1.5rem;
}

.nav-links a {
  text-decoration: none;
  color: white;
  transition: color 0.3s ease;
}

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

/* 首页 */
.hero-section {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 4rem;
  background-color: #f4f4f4;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-block;
  background-color: #007bff;
  color: white;
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

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

.hero-image img {
  max-width: 100%;
  height: auto;
}

/* 功能特点 */
.features-section {
  padding: 4rem;
  text-align: center;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.feature-box {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 2rem;
}

.feature-box img {
  height: 80px;
  margin-right: 1.5rem;
}

/* 下载 */
.download-section {
  padding: 4rem;
  text-align: center;
}

.download-btn {
  display: inline-block;
  background-color: #28a745;
  color: white;
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  font-size: 1.2rem;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.download-btn:hover {
  background-color: #1e7e34;
}

.download-btn img {
  height: 30px;
  margin-right: 0.5rem;
}

/* 页脚 */
.footer {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 1rem;
}