.youtube-section {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 40px 20px;
}
.youtube-heading {
    font-size: 32px;
    font-weight: 700;
    color: #004400;
    margin-bottom: 24px;
    font-family: inherit;
    text-transform: none;
    line-height: 1.2;
}
.youtube-grid-wrapper {
    display: grid;
    gap: 20px;
}
@media (min-width: 1025px) {
    .youtube-grid-wrapper {
        grid-template-columns: repeat(4, 1fr);
    }
}
@media (min-width: 600px) and (max-width: 1024px) {
    .youtube-grid-wrapper {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 599px) {
    .youtube-grid-wrapper {
        grid-template-columns: 1fr;
    }
}
.youtube-grid-item {
    position: relative;
    overflow: hidden;
    text-align: left;
}
.youtube-grid-item img {
    width: 100%;
    display: block;
    border-radius: 0;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}
.youtube-play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 68px;
    height: 48px;
    background: url('https://i.imgur.com/TxzC70f.png') no-repeat;
    background-size: contain;
    transform: translate(-50%, -50%);
}
.youtube-caption {
    font-size: 16px;
    font-weight: 700;
    margin-top: 12px;
    color: #000000;
    font-family: inherit;
    line-height: 1.4;
}
#youtube-lightbox-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
#youtube-lightbox-overlay iframe {
    width: 90vw;
    height: 50vw;
    max-width: 960px;
    max-height: 540px;
}
#youtube-lightbox-close {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 36px;
    color: white;
    cursor: pointer;
}