/* 蒲公英信审学院 - 全局样式 (修复重复、移动端适配) */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", Arial, sans-serif;
}
:root {
  --primary: #0A2558;
  --secondary: #E8F1FF;
  --accent: #C9A961;
  --white: #ffffff;
  --gray: #6B7280;
}
body {
  background-color: var(--white);
  line-height: 1.6;
}
.navbar {
  background-color: var(--primary);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 1000;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  color: var(--white);
  font-size: 24px;
  font-weight: bold;
}
.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.nav-menu a {
  color: var(--white);
  text-decoration: none;
}
/* 移动端导航基础（配合 JS 可切换显示） */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.5rem;
    margin-top: 1rem;
  }
  .nav-menu.active {
    display: flex;
  }
}
.banner {
  background: linear-gradient(135deg, var(--primary), #10367A);
  color: var(--white);
  padding: 4rem 2rem;
  text-align: center;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}
/* 合并去重后的 .grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.card {
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: 0.3s;
}
.card:hover {
  transform: translateY(-5px);
}
.card-img {
  position: relative;
  width: 100%;
  padding-top: 133.333%;
  background-color: var(--secondary);
  overflow: hidden;
}
.card-img img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  display: block;
}
.card-body {
  padding: 1.5rem;
}
.card-title {
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.card-text {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background-color: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  border: none;
  cursor: pointer;
}
.detail-header {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.detail-img {
  width: 300px;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3/4;
  background-color: var(--secondary);
}
.footer {
  background-color: var(--primary);
  color: #fff;
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
}