.video-items {
    position: absolute; top: 0; left: 0; height: 100%; width: 100%; overflow-y: auto; padding-right: 16px;
}
.video-items::-webkit-scrollbar-button {
    display: none;
}
.video-items::-webkit-scrollbar {
    width: 11px;
    height: 100%;
    background: #EEEEEE;
    border-radius: 5px;
}
.video-items::-webkit-scrollbar-thumb {
    width: 5px;
    background: #DDDDDD;
    border-radius: 5px;
    border: 3px solid #DDDDDD;
    box-sizing: border-box;
}
.video-item {
    background-color: white;
    border: 2px solid #333333;
    cursor: pointer; border-radius: 0;
}
.video-item.selected {
    border: none; background-image: linear-gradient(270deg, #E0C42B 0%, #4CB3C0 64%, #1B81B2 100%);
}
.video-item-title {
    font-size: 20px; font-weight: bold; line-height: 28px; color: #333333;
}
.video-item-description {
    font-size: 14px; font-weight: normal; line-height: 16px; height: 32px; max-height: 32px; color: #666666;
}
.video-item.selected .video-item-title, .video-item.selected .video-item-description {
    color: white;
}

/* region speakers */
.speakers .speakers-row {
    display: flex; justify-content: space-between; margin: 20px 0;
}
.speakers .speakers-row:nth-child(even).active-sibling {
    justify-content: flex-end;
}
.speakers .speakers-row:nth-child(odd).active-sibling {
    justify-content: flex-start;
}
.speakers .speakers-row:nth-child(odd) {
    padding-right: 0;
}
.speakers .speakers-row:nth-child(even) {
    padding-left: 0px;
    padding-right: 0px;
}
.speakers.active .speakers-row {
    justify-content: center;
}
.speakers .speakers-row .speaker-item {
    flex: none; position: relative; width: 120px; height: 120px;
    -webkit-transition: flex .25s;
    transition: flex .25s;
}
.speakers .speakers-row .speaker-item.active {
    flex-grow: 1;
    flex-shrink: 1;
    flex-basis: auto;
}
.speakers .speakers-row .speaker-item .before {
    position: absolute; top: 0; left: 0; display: block; width: 120px; height: 120px; background-size: cover;
    box-shadow: 0 0.5em 1em -0.125em rgba(10, 10, 10, 0.3), 0 0 0 1px rgba(10, 10, 10, 0.02); border-radius: 50%;
}
.speakers .speakers-row .speaker-item .after {
    position: absolute; top: 0; bottom: 0; left: 0; right: 0; width: 346px; height: 454px; background-size: cover; margin: auto; z-index: 10;
    transform: scale(.1); visibility: hidden;
    transition: transform .35s, top .1s, bottom .1s;
}
.speakers .speakers-row .speaker-item.active .before {
    display: none;
}
.speakers .speakers-row .speaker-item.active .after {
    transform: scale(.8); visibility: visible;
}
.speakers .speakers-row:first-of-type .speaker-item.active .after {
    top: 50px;
}
.speakers .speakers-row:last-of-type .speaker-item.active .after {
    bottom: 150px;
}
.speakers .speakers-row .speaker-item.left-collapse {
    margin-left: -20px;
}
.speakers .speakers-row .speaker-item.right-collapse {
    margin-right: -20px;
}
.speakers .speakers-row .speaker-item.active-sibling {
    flex-grow: 1;
    flex-shrink: 1;
    flex-basis: auto;
}
.speakers .speakers-row .speaker-item:first-of-type {
    margin-left: 0 !important;
}
.speakers .speakers-row .speaker-item:last-of-type {
    margin-right: 0 !important;
}
/* endregion */

/* region hot topics */
.topic-content-wrapper {
    position: absolute; top: 25px; left: 40px; right: 0px;
}
.topic-content-wrapper.is-primary {
    top: 50%; transform: translateY(-50%); left: 40px; right: 40px; max-width: 325px;
}
.topic-content-title {
    font-size: 24px; font-weight: bold; color: #FFFFFF; line-height: 30px; margin-bottom: 10px;
}
.topic-content-subtitle {
    font-size: 16px; color: #FFFFFF; font-weight: bold; line-height: 30px;
}
.topic-content-description {
    font-size: 14px; color: #FFFFFF; font-weight: 500; line-height: 23px; letter-spacing: 0.5px;
}
@media screen and (min-width: 1216px) {
    .topic-content-description {
        -webkit-line-clamp: 5 !important;
    }
}
/* endregion */

.tab-list {
    cursor: pointer; font-size: 18px; font-weight: bold; line-height: 1;
}
.tabs li.is-active a {
    border-bottom: none; border-bottom-color: transparent; position: relative;
}
.tabs li.is-active a:after {
    content: '';
    position: absolute; bottom: 0; left: 0; width: 100%; height: 4px; background-image: linear-gradient(226deg, #E0C42B 0%, #13ACF9 100%);
}
.tab-name {
    width: 150px; text-align: center;
}
.tab-name-active {
    display: none;
}
.is-active .tab-name {
    display: none;
}
.is-active .tab-name-active {
    display: block;
}
.tab-panel:not(:first-of-type) {
    /*display: none;*/
}

.tabs .is-active a {
    margin-bottom: 0;
}

.expert-name:after {
    content: '';
    height: 0;
    width: 0;
    border: solid transparent;
    border-top-color: #E0C42B;
    border-left-color: #E0C42B;
    border-width: 15px 5px;
}

.speakers .active-sibling.speakers-row .speaker-item.right-collapse {
    margin-right: -30px;
}
.speakers .speakers-row:nth-child(even) {
    padding-left: 40px;
    padding-right: 40px;
}
.speakers .speakers-row:nth-child(odd) .speaker-item .after {
    margin-left: auto;
    margin-right: auto;
}
.speakers .speakers-row:nth-child(even) .speaker-item .after {
    margin-left: auto;
    margin-right: auto;
}