/* greeting */
.greeting__container {
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 6.25rem 0;
}
video {
    position: absolute;
    top: 0;
    left: 0;
    z-index: -11;
    width: 100%;
}
.greeting__description {
    color: #fff;
    font-size: 1.75rem;
    margin-bottom: 4rem;
}
.greeting__detail {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.greeting__detail_title {
    color: #fff;
}
.greeting__detail_contents {
    display: flex;
    gap: 1.25rem;
    flex-direction: column;
    font-size: 1.25rem;
    color: #fff;
}
.greeting__detail_contents-date,
.greeting__detail_contents-place {
    display: flex;
    flex-direction: row;
    gap: 0.625rem;
    align-items: center;
}
/* agenda */
.agenda__container {
    width: 100%;
    background-color: #fff;
    padding: 6.25rem 0;
}
.agenda__title {
    margin-bottom: 2rem;
}
.agenda__contents {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    gap: 4rem;
}
.agenda__leader,
.agenda__tech {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.agenda__leader_title,
.agenda__tech_title {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}
.agenda__sub-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: #E1251B;
}
.agenda__sub-description {
    font-size: 0.875rem;
    color: #ABA8B1;
}
.table__title {
    display: grid;
    grid-template-columns: 1fr 6fr 2fr;
    padding: 0 1rem;
    align-items: center;
    column-gap: 2rem;
    height: 2.5rem;
    background-color: #7A126B;
    color: #fff;
    font-size: 1.125rem;
    font-weight: bold;
}
.table__row {
    display: grid;
    grid-template-columns: 1fr 6fr 2fr;
    padding: 1.375rem 1rem;
    align-items: center;
    column-gap: 2rem;
    word-break: keep-all;
}
.table__row:nth-child(odd) {
    background-color: #E6E2E4;
}
.lenovo_session {
    font-weight: bold;
    color: #E1251B;
}
.partner_session {
    font-weight: bold;
    color: #7A126B;
}
/* speaker */
.speaker__container {
    width: 100%;
    background-color: #1F0A13;
    padding: 6.25rem 0;
}
.speaker__title {
    margin-bottom: 4rem;
    color: #fff;
}
.speaker__contents {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 7.5rem;
    row-gap: 6.25rem;
}
.speaker__item {
    display: grid;
    grid-template-columns: 10rem auto;
    column-gap: 2.5rem;
}
.speaker__item_contents {
    display: flex;
    flex-direction: column;
    color: #fff;
}
.speaker__item_contents--panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
}
.speaker__item_contents--company {
    color: #fff;
    margin-bottom: 0.625rem;
    line-height: 150%;
}
.speaker__item_contents--session {
    font-size: 1.125rem;
    font-weight: bold;
    color: #F26A52;
    margin-bottom: 1.25rem;
}
/* partner */
.partner__container {
    width: 100%;
    background-color: #ffffff;
    padding: 6.25rem 0;
    text-align: center;
}
.partner__title {
    margin-bottom: 4rem;
    color: #1F0A13;
    font-size: 1.75rem;
}
.partner__contents {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.partner__row_alliance {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    padding: 0 10%;
}
.partner__row_alliance > img {
    width: 15%;
    height: auto;
}
.partner__row_isv {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    padding: 0 15%;
}
.partner__row_isv > img {
    width: 23%;
    height: auto;
}

/* Tablet */
@media (min-width: 875px) and (max-width: 1161px) {
    video {
        position: absolute;
        top: 0;
        left: 0;
        z-index: -11;
        height: 100vh;
        width: 100%;
        object-fit: cover;
    }
    .partner__container {
        width: 100%;
        background-color: #ffffff;
        padding: 6.25rem 3.75rem;
        text-align: center;
    }
    .speaker__contents {
        display: grid;
        grid-template-columns: 1fr;
        column-gap: 7.5rem;
        row-gap: 6.25rem;
    }
}

/* Mobile */
@media (max-width: 874px) {
    video {
        position: absolute;
        top: 0;
        left: 0;
        z-index: -11;
        height: 100vh;
        width: 100%;
        object-fit: cover;
    }
    .greeting__detail_contents {
        display: flex;
        gap: 2rem;
        flex-direction: column;
        font-size: 1.25rem;
        color: #fff;
    }
    .greeting__detail_contents-date,
    .greeting__detail_contents-place {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    .agenda__leader_title,
    .agenda__tech_title {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
    .table__title {
        display: grid;
        grid-template-columns: none;
        grid-template-rows: auto;
        padding: 1rem;
        align-items: center;
        column-gap: 0;
        row-gap: 1rem;
        height: auto;
        background-color: #7A126B;
        color: #fff;
        font-size: 1.125rem;
        font-weight: bold;
    }
    .table__row {
        display: grid;
        grid-template-columns: none;
        grid-template-rows: auto;
        padding: 1.375rem 1rem;
        align-items: center;
        column-gap: 0;
        row-gap: 1rem;
        word-break: keep-all;
    }
    .partner__container {
        width: 100%;
        background-color: #ffffff;
        padding: 6.25rem 3.75rem;
        text-align: center;
    }
    .speaker__item {
        display: grid;
        grid-template-columns: none;
        grid-template-rows: auto;
        row-gap: 2.5rem;
    }
    .speaker__contents {
        display: grid;
        grid-template-columns: 1fr;
        column-gap: 7.5rem;
        row-gap: 6.25rem;
    }
    .partner__row_alliance {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        padding: 0;
        flex-wrap: wrap;
    }
    .partner__row_alliance > img {
        width: 50%;
        height: auto;
    }
    .partner__row_isv {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        padding: 0;
        flex-wrap: wrap;
    }
    .partner__row_isv > img {
        width: 50%;
        height: auto;
    }
}