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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    min-height: 100vh;
}

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

.header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    font-size: 28px;
    font-weight: bold;
    color: #ff6b6b;
    text-decoration: none;
    text-shadow: 0 0 10px rgba(255, 107, 107, 0.5);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #ff6b6b;
    transform: translateY(-2px);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff6b6b;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #e0e0e0;
    margin: 3px 0;
    transition: 0.3s;
}

.main {
    margin-top: 80px;
}

.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4));
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 20px;
    margin-bottom: 40px;
    color: #b0b0b0;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    padding: 5px;
    backdrop-filter: blur(10px);
}

.search-box input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    background: transparent;
    color: #fff;
    font-size: 16px;
    outline: none;
}

.search-box input::placeholder {
    color: #b0b0b0;
}

.search-box button {
    padding: 15px 30px;
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.search-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.featured, .categories, .latest {
    padding: 60px 0;
}

.featured h2, .categories h2, .latest h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 50px;
    color: #fff;
    position: relative;
}

.featured h2::after, .categories h2::after, .latest h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    border-radius: 2px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.video-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.video-thumb {
    position: relative;
    overflow: hidden;
}

.video-thumb img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumb img {
    transform: scale(1.1);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 107, 107, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-btn:hover {
    background: rgba(255, 107, 107, 1);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    margin-bottom: 10px;
}

.video-info h3 a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    transition: color 0.3s ease;
}

.video-info h3 a:hover {
    color: #ff6b6b;
}

.video-info p {
    color: #b0b0b0;
    font-size: 14px;
}
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.category-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 180px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.category-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.category-item:hover img {
    transform: scale(1.1);
}

.category-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 30px 20px 20px;
    color: white;
}

.category-overlay h3 a {
    color: white;
    text-decoration: none;
    font-size: 20px;
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
    transition: color 0.3s ease;
}

.category-overlay h3 a:hover {
    color: #ff6b6b;
}

.category-overlay span {
    color: #4ecdc4;
    font-size: 14px;
    font-weight: bold;
}

.latest-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.latest-item {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.latest-item:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.latest-item img {
    width: 120px;
    height: 90px;
    object-fit: cover;
    flex-shrink: 0;
}

.latest-info {
    padding: 15px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.latest-info h3 a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    transition: color 0.3s ease;
    display: block;
    margin-bottom: 8px;
}

.latest-info h3 a:hover {
    color: #ff6b6b;
}

.latest-info p {
    color: #b0b0b0;
    font-size: 13px;
    margin-bottom: 8px;
}

.latest-info .time {
    color: #4ecdc4;
    font-size: 12px;
    font-weight: bold;
}

.footer {
    background: rgba(26, 26, 46, 0.95);
    padding: 50px 0 20px;
    margin-top: 60px;
    backdrop-filter: blur(10px);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: #ff6b6b;
    font-size: 24px;
    margin-bottom: 20px;
}

.footer-section h4 {
    color: #4ecdc4;
    font-size: 18px;
    margin-bottom: 15px;
}

.footer-section p {
    color: #b0b0b0;
    line-height: 1.6;
    margin-bottom: 15px;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ff6b6b;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: inline-block;
    padding: 8px 15px;
    background: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
    text-decoration: none;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 107, 107, 0.3);
}

.social-links a:hover {
    background: rgba(255, 107, 107, 0.2);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #b0b0b0;
}

.footer-bottom a {
    color: #4ecdc4;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #ff6b6b;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        backdrop-filter: blur(10px);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .search-box {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-box input,
    .search-box button {
        border-radius: 25px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .latest-grid {
        grid-template-columns: 1fr;
    }
    
    .latest-item {
        flex-direction: column;
    }
    
    .latest-item img {
        width: 100%;
        height: 150px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .category-item {
        height: 150px;
    }
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 107, 107, 0.3);
    border-radius: 50%;
    border-top-color: #ff6b6b;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}