/* 天依风配色变量 */
:root {
  --tianyi-blue: #66ccff;
  --tianyi-white: #ffffff;
  --tianyi-gray: #e0f7ff;
  --tianyi-shadow: rgba(126, 207, 255, 0.3);
}

/* 页面基础样式 */
body {
  margin: 0;
  font-family: "思源黑体", sans-serif;
  background: linear-gradient(to bottom right, var(--tianyi-gray), var(--tianyi-white));
  color: #333;
}

/* 页面容器 */
.wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 导航栏 */
.home {
  display: flex;
  align-items: center;
  background-color: rgba(51, 51, 51, 0.8);
  color: white;
  padding: 10px 20px;
  height: 80px;
  gap: 20px;
}

.nav-item a {
  color: white;
  text-decoration: none;
}

.nav-item a:hover {
  text-decoration: underline;
}

.nav-right {
  margin-left: auto;
  font-weight: bold;
  font-size: 18px;
}

.main-area {
  display: flex;
  gap: 12px;              /* 缩小盒子之间的间距 */
  padding: 20px 12px;     /* 左右边距也稍微收紧 */
}


/* 内容区域 */
.content {
  flex: 1;
  padding: 40px 20px;
}

/* 文章卡片 */
.section.article-section {
  background-color: rgba(255, 255, 255, 0.9);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 12px var(--tianyi-shadow);
  max-width: 800px;
  margin: auto;
}

.section.article-section h1 {
  color: var(--tianyi-blue);
  margin-bottom: 10px;
}

.meta {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
}

.article-section h3 {
  margin-top: 20px;
  color: #1fa0d3;
  font-size: 18px;
}

.article-section p {
  line-height: 1.8;
  margin-bottom: 12px;
  color: #333;
}

.sidebar {
  width: 260px;
  display: flex;
  flex-direction: column;
  background-color: rgba(49, 9, 112, 0.432);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 2px 0 8px rgba(0,0,0,0.05);
  color: white;
}

/* 页脚 */
.footer {
  height: 60px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  text-align: center;
  line-height: 60px;
  font-size: 14px;
}