:root {
    --pri-color: #9b0000;
    --body-color: #ffffff;
    --transition-1s: 0.75s;
}


#header {
    position: fixed;
    top: 50px;
    left: 50px;
    z-index: 999;
}

#header .logo h1 {
    text-transform: uppercase;
    font-weight: 100;
}

.itm_intro {
    height: 100vh;
    height: 100svh;
    background: #000;
}

.itm_intro .tit {
    z-index: 9;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.itm_intro .tit h2 {
    letter-spacing: -0.9rem;
    font-size: 8rem;
    line-height: 8rem;
    font-weight: 900;
    text-align: center;
    font-family: 'Montserrat';
    font-style: italic;
    white-space: nowrap;
    text-transform: uppercase;
}

.itm_intro .tit h2 span {
    text-align: center;
    animation: variable-loop 6.2s infinite both;
    animation-delay: var(--delay);
    --delay: calc((var(--variable-index) + 1) * 0.15s);
}

@keyframes variable-loop {
    0% {
        font-weight: 100;

    }

    50% {
        font-weight: 900;

    }

    90% {
        font-weight: 100;

    }

    100% {
        font-weight: 100;

    }
}

.itm_intro .tit p {
    margin: 2.4rem 0 0 0;
    font-weight: 300;
    font-size: 1.6rem;
    line-height: 1.6rem;
    text-align: center;
    opacity: 0.8;
}

.itm_intro .tit p span {
    font-weight: 700;
}

.scroll_down {
    position: absolute !important;
    bottom: 4rem;
    left: 50%;
    width: 12rem;
    height: 12rem;

    background: url(../images/scrolldown.png)no-repeat center center/cover;

    animation: scroll_down 10s infinite linear;
}

@keyframes scroll_down {
    0% {
        transform: translate(-50%, 0) rotate(0);
    }

    100% {
        transform: translate(-50%, 0) rotate(360deg);
    }
}

#vanta_bg {
    z-index: -1;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.pf01 {
    background: url(../images/pf01.jpg)no-repeat center center/cover;
}

.pf02 {
    background: url(../images/pf02.jpg)no-repeat center center/cover;
}

.pf03 {
    background: url(../images/pf03.jpg)no-repeat center center/cover;
}

.itm_work_list .list_wrap {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    width: 100%;
}

.itm_work_list .inner .tit {
    flex: 1 0 44rem;
}

.itm_work_list .inner .tit p {
    text-align: left;
}

.itm_work_list .inner .tit h2 {
    text-align: left;
}

.itm_work_list .work_list {
    width: 100%;
}

.itm_work_list .work_list>ul {
    display: flex;
    flex-direction: column;
}

.itm_work_list .work_list>ul>li {
    width: 100%;
    overflow: hidden;
}

.itm_work_list .work_list>ul>li>a {
    display: flex;
    align-items: center;
    gap: 2.4rem;
    padding: 1.6rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: translate(0, 100%);
    transition: var(--transition-1s);
}

.itm_work_list.on .work_list>ul>li>a {
    transform: translate(0, 0);
    transition: var(--transition-1s);
}

.itm_work_list .work_list>ul>li:last-child>a {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.itm_work_list .work_list>ul>li>a .num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 8.8rem;
    height: 8.8rem;
    font-size: 4rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.itm_work_list .work_list>ul>li>a .txt_box {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
}

.itm_work_list .work_list>ul>li>a .txt_box .subject {
    font-size: 2.4rem;
    line-height: 2.4rem;
    font-weight: 700;
}

.itm_work_list .work_list>ul>li>a .txt_box .desc {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.itm_work_list .work_list>ul>li>a .txt_box .desc>li {
    position: relative;
    font-size: 1.6rem;
    line-height: 1.6rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.8);
}

.itm_work_list .work_list>ul>li>a .txt_box .desc>li~li::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -1.5rem;
    transform: translate(0, -50%);
    width: 1px;
    height: 1.4rem;
    background: rgba(255, 255, 255, 0.1);
}

.itm_work_list .work_list>ul>li>a .more_btn {
    margin: 0 0 0 auto;
}

.itm_work_list .work_list>ul>li>a .more_btn>button {
    text-transform: uppercase;
    font-size: 1.6rem;
    font-weight: 100;
}

/* to_top */

#to_top {
    position: fixed;
    z-index: 999;
    bottom: 50px;
    right: 50px;
    cursor: pointer;
    user-select: none;
}

/* cover_ani  */

#cover_ani {
    z-index: 99999;
    position: fixed;
    inset: 0 0 0 0;
    background: #000;
    overflow: hidden;
}

#cover_ani .txt_box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#cover_ani .txt_box p {
    width: 100%;
    text-align: center;
    overflow: hidden;
}

#cover_ani .txt_box p span {
    color: #fff;
    display: inline-block;
    font-size: 8rem;
    line-height: 8.8rem;
    font-weight: 900;
    text-align: center;
    text-transform: uppercase;
    font-style: italic;
    font-family: 'Montserrat';
}