* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
  background-color: #f5f7fa;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #2c3e50;
}

.card {
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin-bottom: 20px;
}

h2 {
  color: #3498db;
  margin-bottom: 15px;
  font-size: 1.5rem;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 15px;
}

.info-item {
  padding: 10px;
  border-radius: 5px;
  background-color: #f8f9fa;
}

.label {
  font-weight: bold;
  color: #555;
}

.value {
  color: #2c3e50;
}

#refresh-btn {
  display: block;
  margin: 20px auto;
  padding: 12px 24px;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#refresh-btn:hover {
  background-color: #2980b9;
}

@media (max-width: 600px) {
  .container {
    padding: 15px;
    margin: 20px auto;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
}