* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo a {
    font-size: 1.8rem;
    font-weight: bold;
    color: #667eea;
    text-decoration: none;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #667eea;
}

.search-box {
    display: flex;
    gap: 0.5rem;
}

.search-input {
    padding: 0.5rem 1rem;
    border: 2px solid #ddd;
    border-radius: 25px;
    outline: none;
    transition: border-color 0.3s ease;
}

.search-input:focus {
    border-color: #667eea;
}

.search-btn {
    padding: 0.5rem 1.5rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-2px);
}

.main-content {
    padding: 2rem 0;
}

.hero-section {
    text-align: center;
    padding: 4rem 0;
    color: white;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.btn-primary:hover {
    background: white;
    color: #667eea;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.book-info {
    margin: 3rem 0;
}

.book-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.book-cover img {
    width: 200px;
    height: 280px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.book-details {
    flex: 1;
}

.book-details h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 1rem;
}

.book-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.book-meta span {
    padding: 0.3rem 0.8rem;
    background: #f0f0f0;
    border-radius: 15px;
    font-size: 0.9rem;
}

.book-description p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.book-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.read-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.bookmark-btn {
    background: #f8f9fa;
    color: #333;
    border: 2px solid #ddd;
}

.share-btn {
    background: #28a745;
    color: white;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.chapters-section, .recommend-section, .gallery-section {
    margin: 3rem 0;
}

.chapters-section h3, .recommend-section h3, .gallery-section h3 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.chapter-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.chapter-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    color: #667eea;
}

.recommend-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.recommend-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.recommend-item:hover {
    transform: translateY(-5px);
}

.recommend-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.recommend-info {
    padding: 1rem;
}

.recommend-info h4 {
    color: #333;
    margin-bottom: 0.5rem;
}

.recommend-info p {
    color: #666;
    font-size: 0.9rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.gallery-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.2);
}

.gallery-img:hover {
    transform: scale(1.05);
}

.footer {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #999;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .book-card {
        flex-direction: column;
        text-align: center;
    }
    
    .book-cover img {
        width: 150px;
        height: 210px;
    }
    
    .book-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .chapters-grid {
        grid-template-columns: 1fr;
    }
    
    .recommend-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .book-card {
        padding: 1rem;
    }
    
    .book-details h2 {
        font-size: 1.5rem;
    }
    
    .book-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}