/* ===== 书籍页面样式 ===== */
.book-cover {
    background: linear-gradient(135deg, #1a1a2e 0%, #2d1b69 100%);
    border-radius: 16px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(245,166,35,0.15);
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.book-cover-icon {
    font-size: 6rem;
    min-width: 120px;
    text-align: center;
    line-height: 1;
}

.book-cover-info h1 {
    font-size: 2.2rem;
    color: #f5a623;
    margin-bottom: 0.5rem;
}

.book-cover-info .book-author {
    font-size: 1.2rem;
    color: #ffd700;
    margin-bottom: 0.3rem;
}

.book-cover-info .book-meta {
    font-size: 0.95rem;
    color: #888;
    margin-bottom: 1rem;
}

.book-cover-info .book-rating {
    color: #f5a623;
    font-size: 1.1rem;
}

.core-list, .chapter-list {
    list-style: none;
    padding: 0;
}

.core-list li, .chapter-list li {
    background: rgba(245,166,35,0.06);
    padding: 1.2rem 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border-left: 3px solid #f5a623;
}

.core-list li strong, .chapter-list li strong {
    color: #f5a623;
    display: block;
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.core-list li p, .chapter-list li p {
    color: #ccc;
    margin: 0;
    font-size: 0.98rem;
}

.case-block {
    background: rgba(139, 92, 246, 0.08);
    border-left: 4px solid #8b5cf6;
    padding: 1.5rem 2rem;
    margin: 1rem 0;
    border-radius: 0 12px 12px 0;
}

.case-block h4 {
    color: #c4a5ff;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.case-block p {
    color: #bbb;
    font-size: 0.98rem;
}

.related-reading {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.related-card {
    background: rgba(245,166,35,0.06);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid rgba(245,166,35,0.1);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-card:hover {
    background: rgba(245,166,35,0.1);
    transform: translateY(-3px);
    border-color: rgba(245,166,35,0.3);
}

.related-card h4 {
    color: #f5a623;
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.related-card p {
    color: #999;
    font-size: 0.9rem;
    margin: 0;
}

@media (max-width: 768px) {
    .book-cover {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .book-cover-icon {
        font-size: 4rem;
        min-width: auto;
    }
}