/* 页面整体样式设置 */
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(to bottom, #1A237E, #424242); /* 渐变背景，从深蓝过渡到灰色 */
  color: #FFFFFF;
  font-family: 'Roboto', sans-serif; /* 全局使用Roboto字体 */
  line-height: 1.6;
}

/* 固定导航栏样式 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(26, 35, 126, 0.9); /* 半透明深蓝色 */
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar .logo {
  font-size: 24px;
  font-family: 'Fira Sans', sans-serif;
  color: #FFC107; /* 使用橙色作为点缀色 */
}

.navbar .menu {
  display: flex;
  gap: 20px;
}

.navbar .menu a {
  color: #FFFFFF;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s;
}

.navbar .menu a:hover {
  color: #8BC34A; /* 点缀色绿色 */
}

/* 汉堡菜单样式（移动端） */
.hamburger {
  display: none;
  font-size: 24px;
  color: #FFFFFF;
  cursor: pointer;
}

@media (max-width: 768px) {
  .navbar .menu {
    display: none;
    flex-direction: column;
    background-color: #424242;
    position: absolute;
    top: 60px;
    right: 30px;
    padding: 10px;
    border-radius: 4px;
  }

  .navbar .menu.active {
    display: flex;
  }

  .hamburger {
    display: block;
  }
}

/* 主内容容器样式 */
.container {
  display: grid;
  grid-template-areas:
    'header'
    'intro'
    'content'
    'footer';
  grid-gap: 40px;
  padding: 100px 50px 50px 50px; /* 顶部留出导航栏空间 */
}

@media (max-width: 1200px) {
  .container {
    grid-template-areas:
      'header'
      'intro'
      'content'
      'footer';
  }
}

@media (max-width: 768px) {
  .container {
    padding: 100px 20px 20px 20px;
  }
}

/* 首页提示样式 */
.home-note {
  text-align: center;
  font-size: 18px;
  color: #FFC107; /* 点缀色橙色 */
  margin-bottom: 30px;
  animation: fadeIn 2s ease-in-out;
}

/* 不对称布局样式 */
.article {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
}

.article .text-section {
  flex: 1 1 60%;
  min-width: 500px;
}

.article .image-section {
  flex: 1 1 35%;
  min-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.article .image-section img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
}

.article .image-section img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

/* 代码块样式 */
pre code {
  display: block;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'Courier New', Courier, monospace;
  color: #FFEB3B; /* 点缀色黄色 */
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

pre code::before {
  content: "代码示例";
  display: block;
  font-size: 14px;
  color: #FFC107;
  margin-bottom: 10px;
}

/* 段落与标题样式 */
h2, h3, h4 {
  font-family: 'Fira Sans', sans-serif;
  color: #FFFFFF;
  margin-bottom: 20px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 24px;
}

h4 {
  font-size: 20px;
}

p {
  font-size: 16px;
  margin-bottom: 20px;
  color: #FFFFFF;
}

/* 图片装饰样式 */
.decorative-image {
  width: 320px;
  height: 320px;
  border-radius: 16px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
}

.decorative-image:hover {
  transform: rotate(5deg) scale(1.05);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

/* 底部样式 */
.footer {
  text-align: center;
  padding: 30px 0;
  background-color: rgba(26, 35, 126, 0.9);
  color: #FFFFFF;
}

.footer a {
  color: #FFC107;
  text-decoration: none;
  margin: 0 10px;
  transition: color 0.3s;
}

.footer a:hover {
  color: #8BC34A;
}

/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}