/* 基础样式 */
main {
  width: 80%;
  margin: 0 auto; /* 居中对齐 */
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background-color: #f0f8ff; /* #f0f0f5; */
  color: #333;
}

/* 容器样式 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部样式 */
header {
  background: linear-gradient(135deg, #483d8b, #2f2a5e);
  color: white;
  padding: 20px 0;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

header h1 {
  margin: 0;
  font-family: "Lobster", cursive;
  font-size: 4em;
  color: #ffffff;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* 导航栏样式 */
header nav ul {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

header nav ul li {
  margin: 0 15px;
}

header nav ul li a {
  text-decoration: none;
  font-size: 1.5em;
  padding: 8px 16px;
  transition: all 0.3s ease;
  border-radius: 5px;
}

/* 顶部导航链接样式 */
header nav a {
  color: #3498db; /* 顶部导航链接的颜色 */
  text-decoration: none;
  font-weight: bold;
}

header nav ul li a:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* 主要内容样式 */
main {
  padding: 40px 0;
}

section {
  margin-bottom: 40px;
  background-color: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 2em;
  color: #2980b9;
  margin-top: 0;
  margin-bottom: 20px;
}

/* 列表样式 */
ul {
  padding-left: 20px;
}

ul li {
  margin-bottom: 10px;
}

/* 页脚样式 */

footer {
  background: linear-gradient(135deg, #2f2a5e, #483d8b);
  color: white;
  text-align: center;
  padding: 20px 0;
  margin: 0 auto;
}
footer p {
  margin-top: 10px;
}
.contact-info {
  display: flex;
  justify-content: space-between;
  max-width: 700px;
  margin: 0 auto;
  padding: 10px 0;
}

.contact-info div {
  flex: 1;
  margin-top: -20px;
  padding: 0 10px;
}

.contact-info p {
  margin: 5px 0;
}

/* 页脚样式 */

/* 按钮样式 */
/* 默认隐藏按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  margin: 10px;
  color: #3498db; /* 顶部导航链接的颜色 */
  text-decoration: none;
  font-weight: bold;
  font-size: 1.5em;
  padding: 8px 16px;
  transition: all 0.3s ease;
  border-radius: 5px;
}
.menu-toggle:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

#back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  font-size: 24px;
  background-color: #ffffff;
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  z-index: 1000;
  display: none;
  transition: all 0.3s ease;
}

#back-to-top:hover {
  transform: translateY(-4px);
  background-color: #d1cee3;
}

/* 响应式设计 */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }

  nav ul li {
    margin: 10px;
  }

  section {
    padding: 20px;
  }

  .swiper {
    height: 300px;
  }
  #menu-nav {
    display: none;
    flex-direction: column;
    background-color: #f5f5f5;
    padding: 10px;
    width: 100%;
    border-top: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
  }

  /* 点击展开时显示菜单 */
  #menu-nav.active {
    display: flex;
  }

  #menu-nav li {
    margin: 10px 0;
  }

  #menu-nav li {
    margin: 5px 0;
    width: 100%;
  }

  #menu-nav li a {
    display: block; /* 让链接元素占满整行 */
    width: 100%; /* 链接宽度充满 */
    padding: 10px;
    text-align: center; /* 居中对齐 */
    background-color: #fff;
    border-radius: 4px;
  }

  #menu-nav li a:hover {
    background-color: #e0e0e0;
  }

  nav {
    position: static;
  }

  .menu-toggle {
    display: block;
  }
}