body {
  font-family: "Georgia", serif;
  background: #fdf6e3; /* light paper yellow */
  color: #4b2e1e; /* warm brown */
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: auto;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2.5rem;
  margin: 0;
}

h2 {
  font-size: 1.2rem;
  margin: 0.5rem 0;
  font-weight: normal;
  color: #6b4226;
}

h3 {
  margin-top: 2rem;
  border-bottom: 2px solid #d2b48c;
  padding-bottom: 0.5rem;
  color: #6b4226;
}

ul {
  list-style-type: none;
  padding-left: 1rem;
}

ul li {
  margin: 0.3rem 0;
  padding-left: 0.5rem;
  position: relative;
}

ul li::before {
  content: "•";
  position: absolute;
  left: -1rem;
  color: #a0522d;
}

.details {
  margin-top: 3rem;
  padding: 1.5rem;
  background: #fff8dc;
  border: 1px solid #d2b48c;
  border-radius: 8px;
}

/* Default link style */
a {
  color: #6b4226; /* warm brown */
  text-decoration: none;
  border-bottom: 1px solid #d2b48c; /* subtle underline */
  transition: color 0.2s ease, border-color 0.2s ease;
}

/* Hover effect */
a:hover {
  color: #4b2e1e; /* darker brown */
  border-bottom: 1px solid #8b4513; /* richer underline */
}

/* Visited links (slightly faded like old books) */
a:visited {
  color: #7a5230;
}

/* Make links inside TOC stand out a little */
.contents a {
  font-weight: 500;
}

.contents a:hover {
  background-color: #fff3cd; /* pale yellow highlight */
  padding: 0 0.2rem;
  border-radius: 4px;
}