/* =========================
   整体页面：书籍风、低饱和
   ========================= */

body {
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  background-color: #f8f6f1;
  color: #2f2f2f;
  line-height: 1.8;
  font-size: 17px;
}

/* 主内容区域 */
.content,
.quarto-container,
.page-columns {
  background-color: #f8f6f1;
}

/* =========================
   标题
   ========================= */

h1, h2, h3, h4 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  color: #2f5d50;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h1 {
  border-bottom: 2px solid #d8d2c4;
  padding-bottom: 0.4rem;
  margin-top: 1.2rem;
  margin-bottom: 1rem;
}

h2 {
  border-left: 5px solid #7b9e87;
  padding-left: 0.6rem;
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
}

h3 {
  color: #556b5d;
  margin-top: 1.2rem;
}

/* =========================
   段落与列表
   ========================= */

p {
  margin-bottom: 0.9rem;
  text-align: justify;
}

ul, ol {
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.25rem;
}

/* =========================
   链接
   ========================= */

a {
  color: #34675c;
  text-decoration: none;
}

a:hover {
  color: #24463e;
  text-decoration: underline;
}

/* =========================
   代码与代码块
   ========================= */

code {
  background-color: #eee8dc;
  color: #7a3e2b;
  padding: 0.15em 0.35em;
  border-radius: 4px;
  font-size: 0.92em;
}

pre {
  background-color: #fbfaf7 !important;
  border: 1px solid #ddd6c8;
  border-radius: 8px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
}

pre code {
  background-color: transparent;
  color: #2f2f2f;
  padding: 0;
}

/* =========================
   表格
   ========================= */

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0 1.2rem 0;
  background-color: #fcfbf8;
}

th {
  background-color: #dfe8e1;
  color: #2f4f45;
  font-weight: 700;
}

th, td {
  border: 1px solid #d8d2c4;
  padding: 0.6rem 0.8rem;
}

tr:nth-child(even) {
  background-color: #f4f1ea;
}

/* =========================
   图片
   ========================= */

img {
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.figure-caption {
  color: #6a6a6a;
  font-size: 0.95em;
  margin-top: 0.4rem;
}

/* =========================
   引用块
   ========================= */

blockquote {
  border-left: 4px solid #9bb7a4;
  background-color: #f2f5f1;
  padding: 0.8rem 1rem;
  color: #444;
  margin: 1rem 0;
}

/* =========================
   侧边目录
   ========================= */

.sidebar nav[role="doc-toc"] a,
#quarto-sidebar a {
  color: #3d564c;
}

.sidebar nav[role="doc-toc"] a:hover,
#quarto-sidebar a:hover {
  color: #1f352f;
}

#quarto-sidebar {
  background-color: #f3f0e8;
}

/* =========================
   提示框 callout
   ========================= */

.callout {
  border-radius: 8px;
  border-left-width: 6px;
}

.callout-note {
  background-color: #eef5f0;
  border-left-color: #6b8f7a;
}

.callout-tip {
  background-color: #f5f3ea;
  border-left-color: #b49b6b;
}

.callout-warning {
  background-color: #faf1eb;
  border-left-color: #c07a52;
}

/* =========================
   首页标题区
   ========================= */

.quarto-title-block .quarto-title-banner {
  background: linear-gradient(90deg, #6f8f7b 0%, #9fb7a3 100%);
  color: #ffffff;
}

.quarto-title-block .title {
  font-weight: 700;
}

.quarto-title-block .subtitle,
.quarto-title-block .author,
.quarto-title-block .date {
  color: rgba(255, 255, 255, 0.92);
}
body {
  background-color: #f8f6f1;
  color: #2f2f2f;
  font-family: "Noto Serif SC", serif;
}

.content {
  max-width: 900px;
}

h1, h2, h3 {
  color: #2f5d50;
}
tooltip {
  position: relative;
  display: inline-block;
  cursor: help;
}

.tooltip .tooltiptext {
  display: none;
  position: absolute;
  background-color: #333;
  color: #fff;
  padding: 6px;
  border-radius: 4px;
  top: -5px;
  left: 105%;
  width: 220px;
}

.tooltip:hover .tooltiptext {
  display: block;
}