body {
  font-family: 微软雅黑, Arial, sans-serif;
  background-color: #f2f2f2;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 80%;
  max-width: 600px;
  padding: 20px;
  background-color: #fff;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
  font-size: 40px;
  text-align: center;
}

h2 {
  color: #333;
  text-align: left;
}

@media (prefers-color-scheme: dark) {
  html,
  body,
  .container {
    filter: invert(1) hue-rotate(180deg);
  }
}

.update-button {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: bold;
  background-color: #4caf50;
  color: #333;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: block;
  margin: 0 auto;
}

.update-button:hover {
  background-color: #45a049;
}