.video-section-wrapper {
        width: 100%;
        max-width: 1520px;
        margin: 40px auto 30px;
        padding: 0 15px;
        box-sizing: border-box;
        font-family: 'Open Sans', Arial, sans-serif;
    }
    .video-section-wrapper * {
        box-sizing: border-box;
    }

    .video-section-title {
        font-size: 26px;
        font-weight: 700;
        color: #1a1a1a;
        margin: 0 0 25px 0;
        letter-spacing: 1px;
        padding-bottom: 10px;
        border-bottom: 3px solid #e31e24;
        display: inline-block;
    }
    .video-section-title span {
        color: #e31e24;
    }

    .video-grid-equal {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .video-grid-equal .video-item {
        position: relative;
        padding-bottom: 56.25%; /* 16:9 比例 */
        height: 0;
        overflow: hidden;
        background: #000;
    }
    .video-grid-equal .video-item iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }

    /* 移动端适配 */
    @media (max-width: 768px) {
        .video-grid-equal {
            grid-template-columns: 1fr;
            gap: 15px;
        }
        .video-section-title {
            font-size: 20px;
        }
    }