html {
    background-color: #f5e6ca;                
    background-image: radial-gradient(circle, rgba(0,0,0,0.02) 1px, transparent 1px);
    background-size: 20px 20px;
    min-height: 100%;
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    background-color: #fcf4e8;
    max-width: 1600px;
    margin: 40px auto;
    padding: 40px 50px;
    border-radius: 4px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08),
                0 2px 8px rgba(0,0,0,0.06),
                inset 0 0 0 1px rgba(200,170,130,0.3);
    color: #3e2c1b;
    line-height: 1.8;
}

nav {
    border-bottom: 1px solid #d6c4a8;
    padding-bottom: 15px;
    margin-bottom: 30px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0;
}

nav a {
    text-decoration: none;
    color: #5a3e2b;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

nav a:hover {
    border-bottom-color: #b5936b;
}

h1 {
    font-size: 2.2rem;
    font-weight: normal;
    text-align: center;
    margin-bottom: 25px;
    color: #3a2819;
    border-bottom: 1px dashed #d6c4a8;
    padding-bottom: 15px;
}

p {
    text-indent: 2em;
    margin-bottom: 1.2em;
    font-size: 1.05rem;
}

pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Georgia', serif;
    line-height: 1.8;
    color: #3e2c1b;
}

.menu > div{
    display: grid;
    border-radius: 10px;
    background-color: rgb(242, 223, 223);
    padding: 1em;
    grid-template-columns: 1fr 1fr ;
    grid-gap: 5px;
}
.box {
  display: grid;
  background-color: #FFF8E7;
  border-radius: 10px;
  border: 2px solid #AAA;
  width: 200px;
  height: 400px;
  overflow-y: auto;
}

.fixed-box a {
  text-decoration: none;
  color: inherit;
  display: block;
  width: 100%;
  text-align: center;
}
.positioned {
  position: fixed;
  right: 50px;
  bottom: 200px;
  z-index: 0;
}
.fixed-box {
  width: 70px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 84, 104, 0.1);
  border: 2px solid rgb(255, 84, 104);
  border-radius: 10px;
}

.chapter-vertical {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.chapter-vertical li {
  background: #fcf4e8;
  border: 1px solid #d6c4a8;
  border-radius: 8px;
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
}

.chapter-vertical li a {
  display: block;
  padding: 14px 20px;
  text-decoration: none;
  color: #3e2c1b;
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 1rem;
  line-height: 1.5;
  transition: background 0.2s, color 0.2s;
}

.chapter-vertical li:hover {
  transform: translateX(6px) translateY(-1px);
  box-shadow: 0 8px 2px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.06);
  border-color: #b5936b;
}
/*
.chapter-vertical li a:hover {
  background: #f2e3d0;
  color: #2a1a0e;
}