* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
body {
  font-family: system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #F2F5FA;
  color: #222;
  padding-bottom: 40px;
}
.header {
  background: linear-gradient(135deg, #1E40AF, #3B82F6);
  color: white;
  padding: 36px 24px 28px;
  border-radius: 0 0 26px 26px;
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.25);
}
.header h1 {
  font-size: 26px;
  margin-bottom: 6px;
}
.header p {
  font-size: 14px;
  opacity: 0.92;
}
.container {
  padding: 20px;
}
.card {
  background: white;
  border-radius: 20px;
  padding: 22px;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #111;
}
.card p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}
.btn {
  display: block;
  background: #2563EB;
  color: white;
  text-align: center;
  padding: 16px;
  border-radius: 16px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  margin-top: 12px;
}
.btn:active {
  background: #1D4ED8;
  transform: scale(0.98);
}
.tag {
  display: inline-block;
  background: #EEF2FF;
  color: #2563EB;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  margin-bottom: 8px;
}