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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

.tx-header-unique {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.tx-logo-brand {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.tx-nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
    font-weight: 500;
}

.tx-nav-menu a:hover {
    opacity: 0.8;
}

.tx-hero-banner {
    background: linear-gradient(to right, #4facfe 0%, #00f2fe 100%);
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.tx-hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.tx-hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.tx-hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
}

.tx-main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 20px;
}

.tx-section-block {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
}

.tx-section-title {
    font-size: 2rem;
    color: #667eea;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 3px solid #667eea;
}

.tx-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tx-video-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #eee;
}

.tx-video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.tx-video-thumbnail {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.tx-video-info {
    padding: 1rem;
}

.tx-video-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #333;
}

.tx-video-desc {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
}

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

.tx-feature-item {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 10px;
    transition: transform 0.3s;
}

.tx-feature-item:hover {
    transform: scale(1.05);
}

.tx-feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tx-feature-heading {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #667eea;
}

.tx-footer-zone {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.tx-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

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

.tx-footer-section a {
    color: #bbb;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

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

.tx-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.tx-category-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    text-decoration: none;
    transition: transform 0.3s;
    font-weight: bold;
    font-size: 1.2rem;
}

.tx-category-card:hover {
    transform: scale(1.05);
}

.tx-content-text {
    line-height: 1.8;
    color: #555;
    margin-bottom: 1rem;
}

.tx-image-showcase {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 10px;
    margin: 1.5rem auto;
    display: block;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.tx-btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.3s;
    text-decoration: none;
    display: inline-block;
}

.tx-btn-primary:hover {
    transform: scale(1.05);
}

.tx-search-box {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    gap: 1rem;
}

.tx-search-input {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid #667eea;
    border-radius: 25px;
    font-size: 1rem;
}

.tx-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.tx-tag-item {
    background: #f0f0f0;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #667eea;
    text-decoration: none;
    transition: background 0.3s;
}

.tx-tag-item:hover {
    background: #667eea;
    color: white;
}

@media (max-width: 768px) {
    .tx-nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .tx-hero-title {
        font-size: 2rem;
    }

    .tx-video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}