/* 全局样式 */
body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  color: #333;
  background: linear-gradient(135deg, #f9f9f9, #eaeaea);
}
h1, h2, h3, h4, h5, h6 {
  color: #2c3e50;
  margin-top: 2rem;
}
a {
  color: #ff6f00;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.module {
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  padding: 20px;
}
.module:hover {
  transform: translateY(-5px);
}
pre {
  background: #2c3e50;
  color: #ecf0f1;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 10px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
th, td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}
th {
  background-color: #f4f4f4;
}
@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr;
  }
  pre {
    font-size: 14px;
  }
}
@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1025px) {
  .container {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 特殊区域样式 */
.hero {
  background: linear-gradient(135deg, #3498db, #2980b9);
  color: #fff;
  text-align: center;
  padding: 50px 20px;
  position: relative;
}
.hero img {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 100px;
  opacity: 0.8;
}
.notice {
  background: #ffdd57;
  color: #2c3e50;
  padding: 10px;
  text-align: center;
  font-weight: bold;
  margin-bottom: 20px;
}