* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

html, body {
  height: 100%;
  background: #f7f9fc;
  color: #2c3e50;
  line-height: 1.7;
}

/* 头部 */
.header {
  background: linear-gradient(90deg, #2d8cf0, #40a9ff);
  color: #fff;
  padding: 16px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 10px rgba(45, 140, 240, 0.1);
  position: sticky;
  top: 0;
  z-index: 99;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav a {
  color: rgba(255, 255, 255, 0.9);
  margin-left: 24px;
  text-decoration: none;
  font-size: 15px;
  transition: color 0.25s ease;
}

.nav a:hover {
  color: #fff;
}

/* 横幅 */
.banner {
  background: linear-gradient(to bottom, #e8f3ff, #f2f8ff);
  text-align: center;
  padding: 70px 20px;
  border-radius: 0 0 20px 20px;
}

.banner h2 {
  font-size: 30px;
  margin-bottom: 12px;
  color: #2d8cf0;
  font-weight: 600;
}

.banner p {
  color: #555;
  font-size: 16px;
  max-width: 700px;
  margin: 0 auto;
}

/* 内容容器 */
.container {
  max-width: 1000px;
  margin: 40px auto;
  padding: 0 20px;
}

.title {
  font-size: 24px;
  margin: 40px 0 20px;
  color: #2d8cf0;
  border-left: 6px solid #2d8cf0;
  padding-left: 14px;
  font-weight: 600;
}

.content p {
  margin-bottom: 16px;
  font-size: 16px;
  color: #3d4a5a;
}

/* 标签列表 */
.list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 10px 0 20px;
}

.list .item {
  background: #fff;
  padding: 10px 18px;
  border-radius: 50px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  font-size: 15px;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}

.list .item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border-color: #2d8cf0;
}

/* 卡片网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin: 10px 0 30px;
}

.card {
  background: #fff;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(45, 140, 240, 0.12);
}

.card h3 {
  color: #2d8cf0;
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 600;
}

.card img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 12px;
}

.card p {
  color: #666;
  font-size: 15px;
}

/* 联系信息 */
.contact p {
  font-size: 16px;
  color: #3d4a5a;
  margin-bottom: 8px;
}

/* 底部 */
.footer {
  background: #2c3e50;
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  padding: 30px 20px;
  margin-top: 60px;
  font-size: 14px;
  border-radius: 20px 20px 0 0;
}