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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.txvlog-navbar-main {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.txvlog-navbar-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.txvlog-navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.txvlog-logo-link {
    text-decoration: none;
    color: inherit;
}

.txvlog-logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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

.txvlog-nav-link:hover::after {
    width: 100%;
}

.txvlog-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
}

.txvlog-mobile-menu {
    display: none;
}

.txvlog-hero-section {
    padding-top: 80px;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.txvlog-hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
    color: white;
    position: relative;
    z-index: 2;
}

.txvlog-hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.txvlog-hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.txvlog-cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.txvlog-cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.txvlog-section-wrapper {
    padding: 5rem 2rem;
}

.txvlog-section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.txvlog-section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.txvlog-section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.txvlog-section-description {
    font-size: 1.1rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.txvlog-video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.txvlog-video-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.txvlog-video-card:hover {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.txvlog-video-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.txvlog-video-info {
    padding: 1.5rem;
}

.txvlog-video-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.txvlog-video-description {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.txvlog-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.txvlog-feature-card {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.txvlog-feature-card:hover {
    transform: translateY(-5px);
}

.txvlog-feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    object-fit: cover;
}

.txvlog-feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

.txvlog-feature-text {
    color: #666;
    line-height: 1.7;
}

.txvlog-about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.txvlog-about-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.txvlog-about-text h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 1.5rem;
}

.txvlog-about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.txvlog-stats-wrapper {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.txvlog-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.txvlog-stat-item {
    text-align: center;
    padding: 2rem;
}

.txvlog-stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.txvlog-stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

.txvlog-footer-wrapper {
    background: #1a1a1a;
    color: white;
    padding: 3rem 2rem 1.5rem;
}

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

.txvlog-footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.txvlog-footer-links {
    list-style: none;
}

.txvlog-footer-link {
    display: block;
    color: #ccc;
    text-decoration: none;
    padding: 0.3rem 0;
    transition: color 0.3s ease;
}

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

.txvlog-footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid #333;
    text-align: center;
    color: #999;
}

.txvlog-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.txvlog-fade-in-active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .txvlog-nav-links {
        display: none;
    }

    .txvlog-mobile-menu-btn {
        display: block;
    }

    .txvlog-mobile-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        padding: 1rem;
    }

    .txvlog-menu-active {
        display: block;
    }

    .txvlog-mobile-menu a {
        display: block;
        padding: 1rem;
        color: #333;
        text-decoration: none;
        border-bottom: 1px solid #eee;
    }

    .txvlog-hero-title {
        font-size: 2.5rem;
    }

    .txvlog-hero-subtitle {
        font-size: 1.1rem;
    }

    .txvlog-about-content {
        grid-template-columns: 1fr;
    }

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