/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Open Sans', sans-serif;
  background: linear-gradient(135deg, #0a0a2a, #1e0c4f, #2b0d6d);
  color: #ffffff;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  font-family: 'Roboto', sans-serif;
  font-weight: bold;
}

h1 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 20px;
}

h2 {
  font-size: 2rem;
  margin-top: 30px;
  margin-bottom: 15px;
}

h3 {
  font-size: 1.75rem;
  margin-top: 25px;
  margin-bottom: 10px;
}

p {
  font-size: 1rem;
  margin-bottom: 15px;
}

pre {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  padding: 15px;
  border-radius: 10px;
  overflow-x: auto;
}

code {
  font-family: 'Courier New', Courier, monospace;
  color: #00ff88;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
}

button {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

button:hover {
  background-color: #0056b3;
  transform: scale(1.1);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.image-grid img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  p {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  p {
    font-size: 0.85rem;
  }
}