:root {
    --usr-grey-color: rgb(245, 245, 245);
}

/* Header */

#t4-header {
    background-color: var(--usr-grey-color);
}

/* Cover */

.usr-cover-holder {
    align-items: flex-start;
    column-gap: 60px;
    display: flex;
    flex-direction: row;
}

.usr-cover-left-holder {
    width: calc((100% - 60px) / 2);
}

.usr-cover-left-holder .usr-cover-title-holder {
    align-items: center;
    column-gap: 0;
    display: flex;
    flex-direction: row;
    margin-bottom: 30px;
    transition: 400ms all;
    user-select: none;
}

.usr-cover-holder.item-open .usr-cover-left-holder .usr-cover-title-holder {
    column-gap: 20px;
}

.usr-cover-left-holder .usr-cover-step-back {
    align-items: center;
    cursor: pointer;
    display: flex;
    flex-direction: row;
    font-size: 0;
    justify-content: center;
    min-width: fit-content;
    transition: 400ms all;
    width: 32px;
}

.usr-cover-holder.item-open .usr-cover-left-holder .usr-cover-step-back {
    font-size: 150%;
}

.usr-cover-holder.item-open .usr-cover-left-holder .usr-cover-step-back:hover {
    opacity: 0.8;
}

.usr-cover-left-holder .usr-cover-title {
    font-size: 28px;
    font-weight: bold;
    margin: 0;
}

.usr-cover-left-holder ul {
    font-size: 1.125rem;
    font-weight: 400;
    list-style: none;
    margin-bottom: 0;
    padding: 0;
}

.usr-cover-left-holder ul > .usr-cover-item-row {
    cursor: pointer;
    user-select: none;
}

.usr-cover-left-holder ul > .usr-cover-item-row + .usr-cover-item-row {
    margin-top: 10px;
}

.usr-cover-left-holder ul > .usr-cover-item-row.open {
    margin-top: 0;
}

.usr-cover-holder.item-open .usr-cover-left-holder ul > .usr-cover-item-row:not(.open) {
    margin-top: 0;
}

.usr-cover-left-holder ul > .usr-cover-item-row > .usr-cover-item-title {
    display: block;
    font-size: 0;
    margin-bottom: 0;
}

.usr-cover-left-holder ul > .usr-cover-item-row.open > .usr-cover-item-title {
    margin-bottom: 20px;
}

.usr-cover-left-holder ul > .usr-cover-item-row > .usr-cover-item-title > i {
    font-size: 22px;
    margin-right: 12px;
    transition: 400ms all;
}

.usr-cover-left-holder ul > .usr-cover-item-row:hover > .usr-cover-item-title > i {
    color: #ff5000;
}

.usr-cover-left-holder ul > .usr-cover-item-row.open > .usr-cover-item-title > i {
    font-size: 0;
    margin-right: 0;
}

.usr-cover-holder.item-open .usr-cover-left-holder ul > .usr-cover-item-row:not(.open) > .usr-cover-item-title > i {
    font-size: 0;
    margin-right: 0;
}

.usr-cover-left-holder ul > .usr-cover-item-row > .usr-cover-item-title > span {
    font-size: 22px;
    transition: 400ms all;
}

.usr-cover-left-holder ul > .usr-cover-item-row:hover > .usr-cover-item-title > span {
    color: black;
    text-shadow: 0 0 2px rgb(0, 120, 120);
}

.usr-cover-left-holder ul > .usr-cover-item-row.open > .usr-cover-item-title > span {
    color: rgb(0, 120, 120);
    font-size: 26px;
}

.usr-cover-holder.item-open .usr-cover-left-holder ul > .usr-cover-item-row:not(.open) > .usr-cover-item-title > span {
    font-size: 0;
}

.usr-cover-left-holder ul > .usr-cover-item-row > .usr-cover-item-description {
    color: transparent;
    font-size: 0;
    transition: 400ms all;
}

.usr-cover-left-holder ul > .usr-cover-item-row.open > .usr-cover-item-description {
    color: black;
    font-size: 21px;
}

.usr-cover-right-holder {
    align-items: center;
    column-gap: 30px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    row-gap: 30px;
    width: calc((100% - 60px) / 2);
}

.usr-cover-right-holder img {
    border-radius: 10px;
    box-shadow: 0 0 8px 1px rgba(0, 0, 0, 0.9);
    cursor: pointer;
    transition: 400ms all;
    width: calc((100% - 2 * 30px) / 3);
}

.usr-cover-right-holder img:hover {
    box-shadow: 0 0 10px 1px rgb(0, 120, 120);
    transform: scale(1.05);
}

.usr-cover-right-holder img.open:hover {
    transform: scale(0.95);
}

.usr-cover-holder.item-open .usr-cover-right-holder img.open {
    width: 100%;
}

.usr-cover-holder.item-open .usr-cover-right-holder img:not(.open) {
    display: none;
}