/* 基本样式设置，包括字体、背景和颜色 */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(-45deg, #87CEEB, #9370DB, #D4AF37, #87CEEB);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
    color: #333333;
  }

  /* 渐变流动动画的关键帧 */
  @keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  /* 固定顶部导航栏样式 */
  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.5);
    transition: background 0.3s ease;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
  }

  /* 滚动时导航栏背景色变化 */
  .navbar.scrolled {
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  /* 导航链接样式 */
  .navbar a {
    color: #9370DB;
    text-decoration: none;
    margin: 0 15px;
    position: relative;
    transition: color 0.3s ease;
  }

  /* 导航链接下方的装饰线 */
  .navbar a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: #D4AF37;
    left: 0;
    bottom: -5px;
    transition: width 0.3s ease;
  }

  /* 悬停时装饰线的扩展效果 */
  .navbar a:hover::after {
    width: 100%;
  }

  /* 章节导航栏样式 */
  .chapter-nav {
    position: fixed;
    left: 20px;
    top: 80px;
    display: flex;
    flex-direction: column;
  }

  /* 章节链接样式 */
  .chapter-nav a {
    margin: 10px 0;
    color: #87CEEB;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s ease;
  }

  /* 章节链接悬停颜色变化 */
  .chapter-nav a:hover {
    color: #D4AF37;
  }

  /* 页面主容器使用网格布局 */
  .container {
    max-width: 1200px;
    margin: 100px auto 50px;
    padding: 20px;
    display: grid;
    grid-template-columns: 3fr 1fr;
    grid-gap: 20px;
  }

  /* 响应式设计，调整网格布局 */
  @media (max-width: 768px) {
    .container {
      grid-template-columns: 1fr;
    }
    .chapter-nav {
      position: static;
      flex-direction: row;
      justify-content: center;
      margin-bottom: 20px;
    }
  }

  /* 文章内容样式 */
  article {
    background: rgba(255, 255, 255, 0.8);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
  }

  /* 文章悬停时轻微上浮效果 */
  article:hover {
    transform: translateY(-5px);
  }

  /* 标题样式，使用装饰性字体 */
  article h2, article h3, article h4 {
    font-family: 'Playfair Display', serif;
    color: #9370DB;
  }

  /* 正文字体大小和行高 */
  article p {
    font-size: 16px;
    line-height: 1.6;
    color: #555555;
  }

  /* 图片画廊布局，使用灵活盒模型 */
  .image-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
  }

  /* 图片样式，包括圆角和阴影 */
  .image-gallery img {
    width: 100%;
    max-width: 320px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  /* 图片悬停时的放大和阴影加深效果 */
  .image-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 12px rgba(0,0,0,0.2);
  }

  /* 按钮样式，包含微动画 */
  .btn {
    background-color: #87CEEB;
    color: #ffffff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s ease, transform 0.3s ease;
    cursor: pointer;
  }

  /* 按钮悬停时的颜色变化和放大效果 */
  .btn:hover {
    background-color: #6aaed6;
    transform: scale(1.05);
  }

  /* 折叠区域的按钮样式 */
  .collapsible {
    background-color: #f1f1f1;
    color: #333;
    cursor: pointer;
    padding: 10px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 16px;
    transition: background-color 0.3s ease;
  }

  /* 折叠区域按钮悬停时的背景色变化 */
  .collapsible:hover {
    background-color: #e0e0e0;
  }

  /* 折叠内容区域的初始样式 */
  .content {
    padding: 0 18px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    background-color: #fafafa;
  }

  /* 代码块的样式，与正文区分 */
  pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 14px;
    margin: 20px 0;
  }

  /* 表格样式，确保可读性 */
  table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
  }

  table, th, td {
    border: 1px solid #ddd;
  }

  th, td {
    padding: 12px;
    text-align: left;
  }

  th {
    background-color: #f2f2f2;
  }

  /* 品牌故事模块的样式 */
  .brand-story {
    background: #fff8e1;
    padding: 40px;
    text-align: center;
    border-top: 1px solid #e0e0e0;
  }

  /* 品牌故事中图片的样式 */
  .brand-story img {
    width: 100px;
    height: auto;
    margin-bottom: 20px;
  }

  /* 品牌故事文字的样式 */
  .brand-story p {
    font-family: 'Roboto', sans-serif;
    color: #555555;
    max-width: 600px;
    margin: 0 auto;
  }

  /* 高级CSS3效果示例 */
  .animated-bg {
    background: linear-gradient(-45deg, #87CEEB, #9370DB, #D4AF37, #87CEEB);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
  }

  .particle {
    position: absolute;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    animation: float 10s infinite ease-in-out;
  }

  @keyframes float {
    0% {
      transform: translateY(0) translateX(0);
      opacity: 0.7;
    }
    50% {
      transform: translateY(-20px) translateX(20px);
      opacity: 1;
    }
    100% {
      transform: translateY(0) translateX(0);
      opacity: 0.7;
    }
  }

  /* 表格内代码的样式，与正文区分 */
  table code {
    color: #ffcc00;
    background-color: #2d2d2d;
    padding: 2px 4px;
    border-radius: 3px;
  }

  /* 深色渐变背景突出内容 */
  .highlight-section {
    background: linear-gradient(45deg, #2c3e50, #4ca1af);
    color: #ffffff;
    padding: 40px;
    border-radius: 10px;
  }

  /* 全局链接样式 */
  a {
    color: #9370DB;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
  }

  /* 链接下划线效果 */
  a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: #D4AF37;
    left: 0;
    bottom: -5px;
    transition: width 0.3s ease;
  }

  /* 链接悬停时下划线展开 */
  a:hover::after {
    width: 100%;
  }

  /* 手绘插画的样式 */
  .illustration {
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
    background-size: contain;
    width: 100%;
    height: 150px;
  }

  /* 响应式设计，调整字体大小 */
  @media (max-width: 768px) {
    article h2 {
      font-size: 20px;
    }
    article h3 {
      font-size: 18px;
    }
    article p {
      font-size: 15px;
    }
    .navbar a, .chapter-nav a {
      font-size: 14px;
    }
  }