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

body {
  font-family: "Microsoft YaHei", sans-serif;
  color: #333;
  line-height: 1.5;
}

/* 导航栏样式 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #2E3192;
  padding: 1rem 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  color: #fff;
  font-size: 1.5rem;
  font-weight: bold;
}

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

.nav-item {
  position: relative;
  margin: 0 1rem;
}

.nav-link {
  color: #fff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  transition: all 0.3s;
}

.nav-link:hover {
  background: #FFB81C;
  border-radius: 4px;
}

/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 150px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: none;
}

.nav-item:hover .dropdown {
  display: block;
}

.dropdown-item {
  display: block;
  padding: 0.5rem 1rem;
  color: #333;
  text-decoration: none;
}

.dropdown-item:hover {
  background: #f5f5f5;
}

/* 页面容器 */
.container {
  max-width: 1200px;
  margin: 80px auto 0;
  padding: 0 1rem;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary {
  background: #2E3192;
  color: #fff;
}

.btn-primary:hover {
  background: #1a1b5e;
}

/* 卡片样式 */
.card {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: transform 0.3s;
}

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

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1rem;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

/* 页脚样式 */
.footer {
  background: #2E3192;
  color: #fff;
  padding: 2rem 0;
  margin-top: 3rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}