* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.container {
  max-width: 600px;
  width: 100%;
  text-align: center;
}
.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 4px solid #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  margin-bottom: 20px;
}
h1 {
  color: #fff;
  font-size: 32px;
  margin-bottom: 8px;
}
.subtitle {
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  margin-bottom: 30px;
}
.card {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  text-align: left;
}
.card h2 {
  color: #667eea;
  font-size: 18px;
  margin-bottom: 10px;
}
.card p {
  color: #555;
  font-size: 15px;
  line-height: 1.6;
}
.footer {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  margin-top: 20px;
}