.book-content {
    line-height: 1.7;
    color: #1f2937;
}

.book-body h1,
.book-body h2,
.book-body h3 {
    font-weight: 700;
    color: #111827;
    line-height: 1.3;
    margin: 1.5em 0 0.5em;
}

.book-body h1 { font-size: 1.75rem; }
.book-body h2 { font-size: 1.35rem; }
.book-body h3 { font-size: 1.15rem; }

.book-body p {
    margin: 0 0 1em;
    text-align: justify;
    hyphens: auto;
    word-wrap: break-word;
    overflow-wrap: break-word;
    font-size: 1rem;
}

@media (min-width: 640px) {
    .book-body p { font-size: 1.05rem; }
}

.book-body p:first-of-type::first-line {
    font-variant: small-caps;
}

.book-header img {
    max-width: 140px;
    height: auto;
}

.book-body br {
    line-height: 0.3;
}