/* =============================
top-hero
============================= */
.top-hero__background {
    width: 100lvw;
    height: 100svh;
    overflow: hidden;
    position: relative;
    z-index: -1;
}

.top-hero__background::after {
    content: '';
    width: 100%;
    height: 100%;
    background: rgba(from var(--primary-black) r g b / 0.3);
    position: absolute;
    top: 0;
    left: 0;
}

.top-hero__background video {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.top-hero__message {
    color: #FFFFFF;
    font-family: 'Marcellus', serif;
    font-size: 2.8rem;
    line-height: 2;
    letter-spacing: 0.24em;
    text-wrap: nowrap;
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

/* top-hero pc */
@media screen and (min-width:769px) {
    .top-hero__message {
        font-size: 6.4rem;
        letter-spacing: 0.32em;
    }
} /* pc 769px */

/* =============================
message
============================= */
.section__title--center {
    margin: 0 auto;
}

.inner-flex {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 40px;
}

.message__wrapper {
    text-align: center;
}

.message {
    padding: 0 0 12px;
    display: inline-block;
    color: var(--primary-navy);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.24em;
    position: relative;
}

.message span {
    font-size: 1.9rem;
}

.message::after {
    display: block;
    content: '';
    width: 100%;
    height: 12px;
    background-image: url(../images/underline.svg);
    background-repeat: no-repeat;
    position: absolute;
    bottom: 0;
}

.message__txt {
    margin-top: 24px;
    text-align: left;
    line-height: 2;
    letter-spacing: 0.04em;
}

/* message pc */
@media screen and (min-width:769px) {
    .inner-flex {
        flex-direction: row;
        gap: 64px;
        margin-top: 80px;
        align-items: center;
    }

    .message__wrapper,
    .message__img {
        flex: 1;
    }

    .message {
        padding: 0 0 16px;
        font-size: 2.4rem;
    }

    .message span {
        font-size: 2.3rem;
    }

    .message::after {
        height: 16px;
        background-size: contain;
    }

    .message__txt {
        margin-top: 40px;
        font-size: 1.8rem;
    }

    .message__txt:last-of-type {
        margin-top: 24px;
    }

    .inner-flex hgroup {
        flex: 1;
    }

    .inner-flex img {
        flex: 1;
    }
} /* pc 769px */

/* =============================
about us
============================= */
.about-inner {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 56px;
}

.swiper {
    width: 100vw;
    height: 240px;
    margin: 0 calc(50% - 50vw) !important;
}

.swiper-wrapper {
    transition-timing-function: linear;
}

.swiper-slide img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.about-flex {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.about__title {
    font-size: 1.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    position: relative;
}

.about__title::before {
    content: '';
    width: 100%;
    height: 1px;
    background: var(--primary-dark-gray);
    position: absolute;
    bottom: -16px;
    left: 0;
}

.about__title::after {
    content: '';
    width: 40px;
    height: 2px;
    background: var(--accent-blue);
    background-repeat: no-repeat;
    position: absolute;
    bottom: -16px;
    left: 0;
    z-index: 1;
}

.about__subTitle {
    margin-top: 40px;
    font-size: 1.8rem;
    font-weight: 500;
    line-height: 2;
    letter-spacing: 0.08em;
}

.about__subTitle span {
    font-size: 1.7rem;
}

.about__txt {
    margin-top: 4px;
    color: #999;
    line-height: 2;
    letter-spacing: 0.04em;
}

/* about us pc */
@media screen and (min-width:769px) {
    .about-inner {
        margin-top: 80px;
        display: flex;
        flex-direction: row;
        gap: 96px;
        justify-content: space-around;
    }

    .swiper {
        width: 320px;
        height: 800px;
        margin: 0 !important;
    }

    .swiper-slide img {
        width: 320px;
        height: 384px;
    }

    .about-flex {
        gap: 96px;
        margin: auto 0;
    }

    .about__title {
        font-size: 2rem;
    }

    .about__title::after {
        width: 56px;
    }

    .about__subTitle {
        margin-top: 32px;
        font-size: 2.2rem;
        letter-spacing: 0.16em;
    }

    .about__subTitle span {
        font-size: 2.1rem;
    }

    .about__txt {
        font-size: 1.8rem;
    }  
} /* pc 769px */

/* =============================
topics
============================= */
.topics__list {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.topics__item {
    border-bottom: 1px solid var(--primary-light-gray);
}

.topics__item a {
    display: block;
    padding: 0 48px 32px 0;
    position: relative;
}

.topics__item a::after {
    display: block;
    content: '';
    width: 24px;
    height: 24px;
    background-image: url(../images/roundbtn-arrow.svg);
    background-size: cover;
    background-repeat: no-repeat;
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    transition: scale 0.3s;
}

.topics__item a:hover::after {
    scale: 1.5;
}

.date {
    color: var(--primary-dark-gray);
    font-family: 'Roboto', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.04em; 
}

.topics__title {
    margin-top: 8px;
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.7;
    letter-spacing: 0.04em;
}

/* topics pc */
@media screen and (min-width:769px) {
    .topics__list {
        margin-top: 80px;
        gap: 40px;
    }

    .topics__item a {
        padding: 0 72px 40px 0;
    }

    .topics__item a::after {
        width: 32px;
        height: 32px;
    }

    .date {
        font-size: 1.7rem;
    }

    .topics__title {
        margin-top: 14px;
        font-size: 1.8rem;
    }       
} /* pc 769px */