body {
  margin: 0;
  min-height: 100vh;
  padding: 60px 40px;
  background:
    radial-gradient(ellipse at 20% 30%, #ffc0cb 0%, transparent 60%),
    radial-gradient(ellipse at 80% 40%, #ffb6c1 0%, transparent 65%),
    linear-gradient(160deg, #ffe4e9 0%, #f9c5d1 40%, #f48fb1 100%);
}
h1 {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: #333;
}
.btn {
  padding: 14px 36px;
  font-size: 18px;
  color: #000000;
  background-color: #fef9f3;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  transition: all 0.25s ease;
}

.btn:hover {
  background-color: #fffaf2;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}