#main{
    height: 450vh; /* スクロール量を増やしてゆったり見せる */
    position: relative;
    background: var(--color-main, #1d4a35); /* 緑のブランドカラー */
}
#main .main_sticky{
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: var(--color-main, #1d4a35);
    --fv-progress: 0; /* 0~1 JSが更新 */
}

/* 左の緑背景(進行度で後ろに引く) */
#main .main_sticky::before{
    content: "";
    position: absolute;
    inset: 0;
    background: var(--color-main, #1d4a35);
    z-index: 0;
    opacity: calc(1 - var(--fv-progress, 0) * 0.6);
    transition: opacity .1s linear;
}

/* 背景スライド(画像) - 初期は右側にカード状、進行で全画面化 */
#main .bg_slide{
    position: absolute;
    /* 初期:右半分のカード(幅48%、高さ60%、右寄せ中央) */
    top:0;
    right: 4%;
    width: calc(58.5% + var(--fv-progress, 0) * 52%);
    height: 100vh;
    z-index: 1;
    overflow: hidden;
    will-change: top, right, width, height;
}
/* 進行度が一定超えたら右マージンもなくす(全画面化) */
@media (min-width: 751px){
    #main .bg_slide{
        right: 0;
    }
}

#main .bg_slide .bg_slide_i{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    will-change: transform;
}
/* 1枚目:拡大 + 2枚目に隠れる時わずかに縮む(奥へ下がる演出)
   + スクロール全体でずっとゆっくり内部拡大(呼吸感) */
#main .bg_slide .bg_slide_i_01{
    background-image: url(../images/home/fv_img_01@x2.jpg);
    z-index: 1;
    transform:
        scale(calc(
            1
            + var(--fv-progress, 0) * 0.08
            + var(--scroll-progress, 0) * 0.15
            - var(--reveal-progress, 0) * 0.05
        ))
        translateY(calc(var(--reveal-progress, 0) * -30px));
}
/* 2枚目:下から translateY でせり上がる + 内部でもスローな縦パララックス
   + スクロール全体でずっとゆっくり内部拡大 */
#main .bg_slide .bg_slide_i_02{
    background-image: url(../images/home/fv_img_02@x2.jpg);
    z-index: 2;
    transform:
        translateY(calc((1 - var(--reveal-progress, 0)) * 110%))
        scale(calc(
            1.04
            + var(--scroll-progress, 0) * 0.15
            - var(--reveal-progress, 0) * 0.04
        ));
    transform-origin: center bottom;
}

/* ===== FV画像マスク演出(ローディング完了時に左→右に退く緑カバー) ===== */
#main .bg_slide .bg_slide_reveal{
    position: absolute;
    inset: 0;
    z-index: 10;
    background: var(--color-main, #1d4a35);
    transform: translateX(0);
    transition: transform 1.4s cubic-bezier(0.77, 0, 0.175, 1);
    pointer-events: none;
}
/* カバーの右端に光の縁(拭き取られていく感) */
#main .bg_slide .bg_slide_reveal::after{
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    opacity: 0;
}
/* ローディング完了:カバーが右へ退く */
body.loaded #main .bg_slide .bg_slide_reveal{
    transform: translateX(101%);
}
body.loaded #main .bg_slide .bg_slide_reveal::after{
    animation: bgRevealEdgeFade 1.4s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}
@keyframes bgRevealEdgeFade{
    0%   { opacity: 0; }
    20%  { opacity: 1; }
    80%  { opacity: 1; }
    100% { opacity: 0; }
}

/* 画像の上に乗る暗幕(進行後半で可読性キープのため濃くする) */
#main .bg_slide::after{
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to right, rgba(29, 74, 53, 0.55), rgba(29, 74, 53, 0) 45%),
        linear-gradient(to top, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0) 50%);
    opacity: calc(var(--fv-progress, 0) * 0.95);
    z-index: 3;
    pointer-events: none;
}

/* ローディング中は拡大停止 */
body:not(.loaded) #main .bg_slide .bg_slide_i_01{
    transform: scale(1);
}
body:not(.loaded) #main .bg_slide .bg_slide_i_02{
    transform: translateY(100%) scale(1);
}

/* コンテンツ枠 */
#main .in{
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    align-items: flex-end;
    padding-bottom: 100px;
}

#main .main_txt_w{}
#main .main_txt_w .txtarea{
	margin-bottom: 30px;
}
#main .main_txt_w .txtarea .home_ttl{
	margin-bottom: 15px;
}
#main .main_txt_w .txtarea .home_ttl .s_txt{
	font-size: 4.5rem;
	letter-spacing: 4px;
	line-height: 1;
	display:inline-block;
	margin-bottom: 10px;
}
#main .main_txt_w .txtarea .home_ttl .l_txt {
	font-size: 7.6rem;
	letter-spacing: 6px;
	line-height: 1;
	display:inline-block;
}
#main .main_txt_w .txtarea .txt{
	font-size: 2.2rem;
	line-height: 1;
}
#main .main_txt_w .event_w{
}
#main .main_txt_w .event_w .date_w{
	align-items: center;
	margin-bottom: 15px;
}
#main .main_txt_w .event_w .date_w .ttl{
	font-size: 2.2rem;
}
#main .main_txt_w .event_w .date_w .line{
	width: 30px;
	height: 1px;
	background: var(--color-white);
	margin: 0 15px;
}
#main .main_txt_w .event_w .date_w .date {
	font-size: 2.2rem;
}

/* 右側SCROLL縦線 */
#main .scroll_w{
    position: absolute;
    right: 30px;
    bottom: 40px;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    opacity: calc(1 - var(--fv-progress, 0) * 2.5);
    pointer-events: none;
}
#main .scroll_w .txt{
    font-size: 1.1rem;
    letter-spacing: 3px;
    writing-mode: vertical-rl;
    color: var(--color-white);
}
#main .scroll_w .line{
    position: relative;
    width: 1px;
    height: 80px;
    background: rgba(255,255,255,0.3);
    overflow: hidden;
}
#main .scroll_w .line::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    animation: scrollLine 2.5s infinite ease-in-out;
}
@keyframes scrollLine{
    0%   { transform: translateY(-100%); }
    50%  { transform: translateY(0); }
    100% { transform: translateY(100%); }
}

/* 下部シャドウ(進行で画像が全画面になった時の可読性用) */
#main .btm_sdw{
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0));
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 300px;
    z-index: 2;
    pointer-events: none;
    opacity: calc(var(--fv-progress, 0) * 1);
}

/* 右側の進行度インジケーター(オリジナル) */
#main .fv_progress_bar{
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 120px;
    background: rgba(255,255,255,0.25);
    z-index: 4;
    overflow: hidden;
    /* 画像カードが出てる初期は目立たなく、後半で登場 */
    opacity: calc(var(--fv-progress, 0) * 1.5);
}
#main .fv_progress_bar::after{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: calc(var(--fv-progress, 0) * 100%);
    background: var(--color-white);
    transition: height .1s linear;
}
#main .fv_progress_num{
    position: absolute;
    right: 45px;
    top: 50%;
    transform: translateY(calc(-50% + 75px));
    font-size: 1.0rem;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.8);
    z-index: 4;
    opacity: calc(var(--fv-progress, 0) * 1.5);
    display: flex;
    gap: 4px;
    align-items: center;
}
/* 数字部分(フリップ用のウィンドウ) */
#main .fv_progress_num .num_window{
    position: relative;
    display: inline-block;
    width: 1.2em;
    height: 1em;
    overflow: hidden;
    line-height: 1;
}
#main .fv_progress_num .num_window .num_inner{
    position: absolute;
    left: 0;
    top: 0;
    transition: transform .6s cubic-bezier(0.77, 0, 0.175, 1);
    line-height: 1;
}
#main .fv_progress_num .num_window .num_inner span{
    display: block;
    height: 1em;
    line-height: 1;
}
/* is_second: 2枚目表示時は1em分上に移動して "2" を見せる */
#main .fv_progress_num.is_second .num_window .num_inner{
    transform: translateY(-1em);
}

/* ==============================
   SP - 画像カードは上、テキストは下
   ============================== */
@media screen and (max-width: 750px) {
    #main{
        height: 375vh;
    }
    #main .main_sticky{
        height: 100vh;
    }
    #main .bg_slide {
        top: calc(12% - var(--fv-progress, 0) * 12%);
        right: calc(7% - var(--fv-progress, 0) * 7%);
        left: calc(7% - var(--fv-progress, 0) * 7%);
        width: auto;
        height: calc(56% + var(--fv-progress, 0) * 55%);
    }
    #main .in{
        align-items: flex-end;
        padding-bottom: 50px;
    }
    #main .main_txt_w {
        position: relative;
    }
    #main .main_txt_w .txtarea{
        margin-bottom: 40px;
    }
    #main .main_txt_w .txtarea .home_ttl{
        margin-bottom: 10px;
    }
    #main .main_txt_w .txtarea .home_ttl .s_txt{
        font-size: 2.7rem;
        letter-spacing: 2px;
    }
    #main .main_txt_w .txtarea .home_ttl .l_txt{
        font-size: 4.6rem;
        letter-spacing: 4px;
    }
    #main .main_txt_w .txtarea .txt {
        font-size: 1.4rem;
        line-height: 1;
        letter-spacing: 1px;
    }
    #main .main_txt_w .event_w .date_w .ttl{
        font-size: 1.8rem;
        letter-spacing: 2px;
    }
    #main .main_txt_w .event_w .date_w .line{
        width: 20px;
        height: 1px;
        background: var(--color-white);
        margin: 0 10px;
    }
    #main .main_txt_w .event_w .date_w .date {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }
    #main .scroll_w{
        display: none;
    }
    #main .fv_progress_bar,
    #main .fv_progress_num{
        display: none;
    }
}

#about{
	padding: 80px 0 12vw;
    position: relative;
}
#about .sec_ttl_w{
	position: relative;
	z-index: 3;
    margin-bottom: 0;
}
#about .about_img_01{
	position: relative;
	left: 100px;
	top: -40px;
	z-index: 2;
	width: 614px;
	height: 449px;
	overflow: hidden;
}
#about .about_img_02 {
	position: absolute;
	right: 0;
	top: 50px;
	z-index: 2;
	width: 220px;
	height: 268px;
	overflow: hidden;
}
#about .about_img_01 img,
#about .about_img_02 img {
	will-change: transform;
	display: block;
	width: 100%;
	height: 130%;
	object-fit: cover;
	position: absolute;
	top: -5%;
	left: 0;
}
#about .bg_illust{
	position: absolute;
    top: -40px;
    right: 0;
	opacity: 0.15;
}
#about .bg_illust svg{
	width: 550px;
}
#about .about_txt_area_w {
	position: absolute;
	width: 430px;
	right: 0;
	bottom: -30px;
}
#about .about_txt_area_w .sub_ttl{
	font-size: 4.2rem;
	font-weight: 300;
	margin-bottom: 20px;
    letter-spacing: 6px;
}
#about .about_txt_area_w > .txt{
	line-height: 2;
	margin-bottom: 20px;
}
#about .bottom_line{
    position: absolute;
    bottom: 0;
    left: 0;
}
#about .bottom_line svg{
    width: 100%;
}
@media screen and (max-width: 750px) {
    #about{
        padding-top: 50px;
    }
    #about .about_img_01 {
        position: relative;
        left: 50%;
        top: -5vw;
        z-index: 2;
        width: 260px;
        height: 280px;
        overflow: hidden;
        transform: translate(-50%, 0px);
    }
    #about .about_img_02 {
        position: absolute;
        right: auto;
        top: 112vw;
        z-index: 2;
        width: 142px;
        height: 204px;
        overflow: hidden;
        left: -6%;
    }
    #about .about_txt_area_w{
        width: 55%;
        margin-left: auto;
        position: relative;
        bottom: auto;
        top: -10vw;
        z-index: 2;
    }
    #about .about_txt_area_w .sub_ttl {
        font-size: 2.8rem;
        font-weight: 300;
        margin-bottom: 15px;
        letter-spacing: 4px;
    }
    #about .bg_illust {
        position: absolute;
        top: -25px;
        right: -15vw;
        opacity: 0.07;
    }
    #about .bg_illust svg {
        width: 100%;
    }
    #about .about_img_01 img, #about .about_img_02 img{
        height: 150%;
    }
    #about .bottom_line svg {
        width: 100%;
        height: 55px;
    }
}

#event{
    padding: 0px 0 80px;
    position: relative;
    overflow: hidden;
}
#event .bg_illust {
    position: absolute;
    top: 0px;
    right: 0;
    opacity: 0.15;
    z-index: 0;
}
#event .bg_illust svg { width: 550px; }

#event .event_slider_w{
    position: relative;
    z-index: 1;
    margin-bottom: 40px;
}
#event .event_i{
    height: auto;
}
#event .event_i a{
    display: block;
}
#event .event_i .imgarea{
    overflow: hidden;
    margin-bottom: 15px;
}
#event .event_i .imgarea img{
    display: block;
}
#event .event_i .txtarea .date{
    font-size: 1.3rem;
    margin-bottom: 8px;
}
#event .event_i .txtarea .event_name{
    font-size: 1.6rem;
    line-height: 1.6;
    margin-bottom: 15px;
    font-weight: 600;
}
#event .event_i .event_i_btm{
    justify-content: space-between;
    align-items: center;
}
#event .event_i .tag_i span{
    display: inline-block;
    padding: 4px 12px;
    font-size: 1.2rem;
    border-radius: 2px;
}
#event .event_i .arr{ width: 50px; }
#event .event_i .arr img{ width: 100%; }

#event .event_nav_prev,
#event .event_nav_next{
    position: absolute;
    top: 30%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-main, #0f4d35);
    border: none;
    cursor: pointer;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .3s;
}
#event .event_nav_prev{ left: -24px; }
#event .event_nav_next{ right: -24px; }
#event .event_nav_prev span,
#event .event_nav_next span{
    width: 10px;
    height: 10px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
    display: block;
}
#event .event_nav_prev span{ transform: rotate(-135deg); margin-left: 4px; }
#event .event_nav_next span{ transform: rotate(45deg); margin-right: 4px; }
#event .event_nav_prev.swiper-button-disabled,
#event .event_nav_next.swiper-button-disabled{
    opacity: .3;
    cursor: default;
}

#event .event_pagination{
    display: flex;
    justify-content: center;
    gap: 2px;
    margin-top: 30px;
}
#event .event_pagination .swiper-pagination-bullet{
    width: 40px;
    height: 2px;
    border-radius: 0;
    background: #ccc;
    opacity: 1;
    transition: background .3s;
}
#event .event_pagination .swiper-pagination-bullet-active{
    background: var(--color-main, #0f4d35);
}

#event .btn_w{
    justify-content: center;
}

@media screen and (max-width: 750px) {
    #event{ padding: 8vw 0 45px; }
    #event .in{width: 100%;}
    #event .sec_ttl_w{padding:0 5%;}
    #event .event_nav_prev{ left: 4px; top: 28%; }
    #event .event_nav_next{ right: 4px; top: 28%; }
    #event .event_slider_w{
        padding: 0 5%;
    }
    #event .event_swiper{
        overflow: visible;
    }
    #event .bg_illust {
        top: -20px;
        right: -50px;
    }
    #event .bg_illust svg {
        width: 100%;
    }
    #event .event_i .arr{
        width: 45px;
    }
}

#artist{
    padding: 8vw 0 80px;
    position: relative;
    overflow: hidden;
}
#artist .wave_divider {
    position: absolute;
    top: 0;
    z-index: 2;
    width: 100%;
}
#artist .bg{
    width: 100%;
    height: 150%;
    background-image: url(../images/home/artist_bg@x2.jpg);
    background-size: cover;
    background-position: center;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
}
#artist .artist_w{
    background: rgba(255,255,255,0.6);
    padding: 30px;
    margin-bottom: 40px;
}
#artist .btn_w{
    text-align: center;
    justify-content: center;
}
@media screen and (max-width: 750px) {
    #artist {
       padding: 15vw 0 50px
    }
    #artist .artist_w{
        padding: 20px;
    }
}

#news{
    padding:80px 0 3vw;
}
#news .news_w{
    margin-bottom: 20px;
}
#news .btn_w{
   justify-content: flex-end;
}
@media screen and (max-width: 750px) {
    #news {
        padding: 55px 0 10vw;
    }
}

#about_yakushima{
    position: relative;
    overflow: hidden;
    padding: 2vw 0 80px;
}
#about_yakushima .ay_ttl_w{
    margin-bottom: 170px;
}
#about_yakushima .ay_ttl_w .s_txt{
    font-size: 2.2rem;
    line-height: 1;
    margin-bottom: 20px;
    letter-spacing: 4px;
}
#about_yakushima .ay_ttl_w .sec_ttl{
    font-size: 6.0rem;
    line-height: 1;
    letter-spacing: 6px;
}
#about_yakushima .ay_ttl_w .line{
    position: relative;
    width: 1px;
    height: 80px;
    background: rgba(255, 255, 255, 0.3);
    overflow: hidden;
    display: block;
    margin-left: 7px;
    margin-bottom: 20px;
}
#about_yakushima .ay_ttl_w .line::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    animation: scrollLine 2.5s infinite ease-in-out;
}
#about_yakushima .txtarea{
    margin-bottom: 20px;
}
#about_yakushima .txtarea .l_txt{
    font-size: 4.0rem;
    letter-spacing: 4px;
    margin-bottom: 10px;
}
#about_yakushima .bg{
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}
#about_yakushima .bg::after{
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.35);
    z-index: 1;
}
#about_yakushima .bg video{
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
#about_yakushima .wave_divider {
    position: absolute;
    top: 0;
    z-index: 4;
    width: 100%;
}
@media screen and (max-width: 750px) {
    #about_yakushima{
        padding: 2vw 0 60px;
    }
    #about_yakushima .ay_ttl_w .s_txt{
        font-size: 2.1rem;
        letter-spacing: 2px;
        margin-bottom: 10px;
    }
    #about_yakushima .ay_ttl_w .sec_ttl {
        font-size: 4.4rem;
        line-height: 1;
        letter-spacing: 4px;
    }
    #about_yakushima .txtarea .l_txt {
        font-size: 3rem;
        letter-spacing: 4px;
        margin-bottom: 10px;
    }
    #about_yakushima .txtarea .s_txt{
        font-size: 1.4rem;
        line-height: 1.75;
    }
}

#sponser{
    padding: 60px 0;
}
@media screen and (max-width: 750px) {
    #sponser {
        padding: 30px 0;
    }
}