/* 全局样式 */
body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', sans-serif;
  font-size: 16px; /* 正文字号 */
  line-height: 1.6;
  color: #ffffff;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364); /* 渐变背景 */
}

/* 固定导航栏 */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(29, 78, 216, 0.9); /* 主色调 */
  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 a {
  color: #ffffff;
  text-decoration: none;
  margin: 0 15px;
  font-size: 16px;
  transition: color 0.3s ease;
}

.navbar a:hover {
  color: #25c2e0; /* 辅助色 */
}

/* 侧边导航 */
.side-nav {
  position: fixed;
  top: 80px;
  left: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  transform: rotate(-5deg);
}

.side-nav a {
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  transition: transform 0.3s ease;
}

.side-nav a:hover {
  transform: scale(1.1);
}

/* 主内容容器 */
.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 120px 40px 40px 40px; /* 留出导航栏空间 */
}

.left-panel, .right-panel {
  background: rgba(255, 255, 255, 0.05); /* 辅助色 */
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  padding: 20px;
  margin-bottom: 20px;
}

.left-panel {
  flex: 2 1 60%;
}

.right-panel {
  flex: 1 1 35%;
}

/* 图片样式 */
img.decorative {
  width: 100%;
  max-width: 320px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img.decorative:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 16px rgba(0,0,0,0.4);
}

/* 按钮样式 */
button {
  background: #25c2e0; /* 辅助色 */
  border: none;
  padding: 12px 24px;
  color: #fff;
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

button:hover {
  background: #1a9cbf;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 标题样式 */
h2, h3, h4 {
  color: #ffffff;
  margin-bottom: 15px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
}

h4 {
  font-size: 18px;
}

/* 文章内容样式 */
article {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

p {
  margin-bottom: 10px;
  font-size: 16px;
  color: #dddddd;
}

/* 代码块样式 */
pre {
  background: #2c5364; /* 背景色 */
  padding: 15px;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 20px;
}

code {
  color: #00ffc8; /* 代码文字颜色 */
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
}

/* 表格样式 */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  overflow: hidden;
}

thead {
  background: #1a9cbf; /* 辅助色 */
  color: #ffffff;
}

th, td {
  padding: 12px 15px;
  text-align: left;
}

tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.05);
}

/* 面包屑导航样式 */
.breadcrumb {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: #cccccc;
  margin: 20px 0;
}

.breadcrumb a {
  color: #25c2e0;
  text-decoration: none;
  margin-right: 5px;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: #1a9cbf;
}

.breadcrumb::after {
  content: '>';
  margin-left: 5px;
  color: #999999;
}

.breadcrumb .current {
  color: #ffffff;
}

/* 导航提示 */
.design-reference {
  text-align: center;
  font-size: 18px;
  color: #ff5722; /* 点缀色 */
  margin: 20px 0;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
  .container {
    flex-direction: column;
    padding: 80px 20px 20px 20px;
  }
  
  .left-panel, .right-panel {
    flex: 1 1 100%;
  }
  
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .side-nav {
    flex-direction: row;
    top: auto;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) rotate(0deg);
  }
}