* {
    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;
}

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

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 5%;
}

.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
    background: rgba(255, 255, 255, 0.9);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.hero-content h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-description {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.btn-primary, .btn-secondary {
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

.hero-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.video-section {
    background: rgba(255, 255, 255, 0.9);
    padding: 3rem;
    border-radius: 20px;
    margin-bottom: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.video-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.video-player {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.video-player img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.3s ease;
}

.play-overlay:hover {
    background: rgba(0, 0, 0, 0.5);
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #667eea;
    transition: all 0.3s ease;
}

.play-button:hover {
    transform: scale(1.1);
    background: white;
}

.video-info h2 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.info-grid {
    display: grid;
    gap: 1rem;
}

.info-item {
    display: flex;
    padding: 0.8rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.info-item .label {
    font-weight: bold;
    color: #667eea;
    min-width: 60px;
}

.info-item .value {
    color: #333;
}

.episodes-section, .gallery-section, .description-section, .related-section {
    background: rgba(255, 255, 255, 0.9);
    padding: 3rem;
    border-radius: 20px;
    margin-bottom: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.episodes-section h2, .gallery-section h2, .description-section h2, .related-section h2 {
    color: #333;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    text-align: center;
    position: relative;
}

.episodes-section h2::after, .gallery-section h2::after, .description-section h2::after, .related-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 2px;
}

.episodes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.episode-item {
    padding: 1rem;
    background: linear-gradient(45deg, #f8f9ff, #e8ecff);
    border: 2px solid transparent;
    border-radius: 10px;
    text-decoration: none;
    color: #333;
    text-align: center;
    font-weight: 500;
    transition: all 0.3s ease;
}

.episode-item:hover, .episode-item.active {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.description-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: start;
}

.description-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.description-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: #555;
    text-align: justify;
}

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

.related-item {
    text-align: center;
    background: rgba(102, 126, 234, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.related-item:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-5px);
}

.related-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.related-item h3 a {
    text-decoration: none;
    color: #333;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.related-item h3 a:hover {
    color: #667eea;
}

.footer {
    background: rgba(0, 0, 0, 0.9);
    color: white;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 5%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    line-height: 1.6;
    color: #ccc;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.footer-links a:hover {
    color: #667eea;
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.5);
    padding: 1rem;
    text-align: center;
    color: #999;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .video-container {
        grid-template-columns: 1fr;
    }

    .description-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .description-image {
        height: 300px;
    }

    .episodes-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }

    .main-content {
        padding: 1rem 3%;
    }

    .hero-section, .video-section, .episodes-section, .gallery-section, .description-section, .related-section {
        padding: 2rem;
    }
}