body {
  font-family: "Microsoft YaHei", sans-serif;
  background-color: #f8f9fa;
  margin: 0;
  padding: 20px;
  color: #333;
}
a {
  color: #007bff;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}