.arch_participation {
    display: flex;
    width: 100%;
    justify-content: center;
}

.arch_participation_sz {
    display: flex;
    width: calc(100% - 20px);
    max-width: 1280px;
    margin: 40px 0;
    flex-direction: column;
}

.arch_participation_ttl {
    display: flex;
    width: 100%;
    align-items: center;
    margin-bottom: 10px;
}

.arch_participation_ttl span:nth-child(1) {
    width: 4px;
    background: #024343;
    margin-right: 20px;
    min-height: 40px;
}

.arch_participation_ttl span:nth-child(2) {
    display: block;
    color: #024343;
    font-family: "Montserrat", serif;
    font-weight: 700;
    line-height: 1.375;
    font-size: 36px;
}

.arch_participation_list {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
}

.arch_participation_unit {
    display: flex !important;
    width: calc((100% / 3) - 20px);
    margin: 20px 0;
    overflow: hidden;
    justify-content: center;
}

.arch_participation_unit_sz {
    display: flex;
    width: 100%;
    flex-direction: column;
    text-decoration: none;
}

.arch_participation_unit_image {
    display: block;
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.arch_participation_unit_image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 345ms ease;
}

.arch_participation_unit:hover .arch_participation_unit_image img {
    transform: scale(1.1);
}

.arch_participation_unit_txt {
    display: flex;
    width: 100%;
    background: #024343;
    justify-content: center;
}

.arch_participation_unit_txt_sz {
    display: flex;
    width: calc(100% - 20px);
    max-width: 340px;
    flex-direction: column;
    margin: 20px 0;
}

.arch_participation_unit_txt_ttl {
    display: block;
    color: #FFFFFF;
    font-family: "Montserrat", serif;
    font-weight: 600;
    line-height: 1.375;
    font-size: 18px;
    height: calc(18px * 1.375 * 3);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.arch_participation_unit_txt_excerpt {
    display: block;
    color: #FFFFFF;
    font-family: "Montserrat", serif;
    font-weight: 400;
    line-height: 1.375;
    font-size: 18px;
    height: calc(18px * 1.375 * 4);
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    margin: 10px 0;
}

.arch_participation_btn_c {
    display: flex;
    width: 100%;
    justify-content: flex-end;
    text-decoration: none;
}

.arch_participation_btn {
    display: inline-flex;
    background: #024343 0% 0% no-repeat padding-box;
    border: 1px solid #3F95D6;
    color: #FFFFFF;
    font-family: "Montserrat", serif;
    font-weight: 600;
    line-height: 1;
    font-size: 18px;
    text-decoration: none;
    padding: 19px 32px;
    border-radius: 40px;
    transition: all 345ms ease-in;
}

.arch_participation_btn:hover
{
    background: #FFF;
    color: #024343;
}


@media (max-width: 768px) {
    .arch_participation_btn {
        padding: 15px 24px;
        font-size: 16px;
    }

    .arch_participation_btn_c {
        justify-content: center;
    }
}

/* Responsive Adaptations */
@media (max-width: 1200px) {
    .arch_participation_unit {
        width: calc(50% - 20px);
    }
}

@media (max-width: 768px) {
    .arch_participation_ttl span:nth-child(2) {
        font-size: 28px;
    }

    .arch_participation_unit_txt_ttl,
    .arch_participation_unit_txt_excerpt {
        font-size: 16px;
        height: calc(16px * 1.375 * 3);
    }

    .arch_participation_unit_txt_excerpt {
        height: calc(16px * 1.375 * 4);
    }
}

@media (max-width: 600px) {
    .arch_participation_unit {
        width: 100%;
    }

    .arch_participation_ttl span:nth-child(2) {
        font-size: 24px;
    }

    .arch_participation_sz {
        margin: 30px 0;
    }

    .arch_participation_unit_txt_ttl,
    .arch_participation_unit_txt_excerpt {
        font-size: 15px;
        height: calc(15px * 1.375 * 3);
    }

    .arch_participation_unit_txt_excerpt {
        height: calc(15px * 1.375 * 4);
    }
}