/* 基础样式 */
body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: linear-gradient(to bottom, #F8F9FA, #FFFFFF);
  color: #333333;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
}
h1, h2, h3, h4 {
  color: #007BFF;
  font-weight: bold;
}
p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}
a {
  text-decoration: none;
  color: #007BFF;
}
a:hover {
  text-decoration: underline;
}
button {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}
button:hover {
  transform: scale(1.1);
  background-color: #0056b3;
}
pre {
  background-color: #f4f4f4;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
  font-family: 'Courier New', Courier, monospace;
}
code {
  color: #D35400;
}

/* 头部设计 */
header {
  background: linear-gradient(to right, #007BFF, #28A745);
  color: white;
  padding: 20px 0;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 1000;
}
header h1 {
  font-size: 2rem;
  margin: 0;
}
header p {
  margin: 5px 0 0;
  font-size: 1rem;
}

/* 栅格系统 */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: -15px;
}
.col {
  flex: 1;
  padding: 15px;
  box-sizing: border-box;
}
@media (max-width: 768px) {
  .col {
    flex-basis: 100%;
  }
}

/* 图片展示 */
.gallery img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}
.gallery img:hover {
  transform: scale(1.05);
}

/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.fade-in {
  animation: fadeIn 1.5s ease-in-out;
}

/* 表格样式 */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
th, td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}
th {
  background-color: #007BFF;
  color: white;
}

/* 文章样式 */
.article-container {
  background: #FFFFFF;
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}
.article-container h2 {
  margin-top: 0;
}
.article-container pre {
  background: #e9ecef;
  border-radius: 5px;
}

/* 提示信息 */
.tip {
  background: #FFC107;
  color: #333333;
  padding: 10px;
  border-radius: 5px;
  text-align: center;
  margin: 20px 0;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  header h1 {
    font-size: 1.8rem;
  }
}
@media (max-width: 768px) {
  header h1 {
    font-size: 1.5rem;
  }
  .container {
    padding: 10px;
  }
}
@media (max-width: 480px) {
  header h1 {
    font-size: 1.2rem;
  }
}