.page-banner-header {
    background: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    padding: 4rem 2rem;
    text-align: center;
    color: white;
}

.page-main-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-desc-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
}

.page-content-section {
    padding: 5rem 2rem;
    background: #F9FAFB;
}

.page-content-container {
    max-width: 1400px;
    margin: 0 auto;
}

.page-intro-panel {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 4rem;
}

.intro-section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1E40AF;
    margin-bottom: 1.5rem;
}

.intro-paragraph-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: #4B5563;
}

.page-video-grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.video-card-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s;
    border: 1px solid #E5E7EB;
}

.video-card-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px rgba(0,0,0,0.15);
}

.video-thumbnail-wrapper {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.video-card-item:hover .video-thumb-img {
    transform: scale(1.05);
}

.video-play-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card-item:hover .video-play-layer {
    opacity: 1;
}

.play-icon {
    font-size: 3rem;
    color: white;
}

.video-time-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

.video-details-box {
    padding: 1.5rem;
}

.video-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.5rem;
}

.video-metadata-line {
    font-size: 0.875rem;
    color: #6B7280;
    margin-bottom: 0.75rem;
}

.video-description-text {
    color: #6B7280;
    line-height: 1.6;
}

.page-cta-block {
    background: linear-gradient(135deg, #1E40AF 0%, #0EA5E9 100%);
    padding: 4rem;
    border-radius: 12px;
    text-align: center;
    color: white;
}

.cta-block-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-block-desc {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-back-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: white;
    color: #1E40AF;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.cta-back-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    .page-main-title {
        font-size: 2rem;
    }
    .page-video-grid-layout {
        grid-template-columns: 1fr;
    }
}