@charset "utf-8";
/* トップページ専用：メインビジュアル */
.mv_l_wrap {
    position: relative;
    background: none;
}
.mv_l_wrap #theme {
    position: relative;
    width: 100%;
    margin: 0 auto;
	top:20%;
}
.mv_l_wrap #theme img,
.mv-details img {
    display: block;
    width: 100%;
}
.mv-details {
    position: absolute;
    bottom: 0;
    width: 100%;
}
#date {
    width: 90%;
    margin: 0 auto 40px;
}
#venue_chair {
    width: 100%;
}
@media screen and (min-width: 769px) {
    .mv_l_wrap {
        height: 800px;
    }
}
/* 769px〜1000px：横スクロールを防ぐ中間幅レイアウト */
@media screen and (min-width: 769px) and (max-width: 1000px) {
    .mv_l_wrap {
        height: clamp(520px, 75vw, 740px);
    }
    .mv_l_wrap #theme {
        width: min(94%, 700px);
    }
    .mv-details {
        bottom: 0;
    }
    #venue_chair {
        max-width: 700px;
        margin: 0 auto;
    }
    #new {
        margin: 35px 20px 60px;
    }
}

@media screen and (max-width: 768px) {
	
    .mv_l_wrap {
        height: auto;
        margin: 0 15px;
        padding: 0;
    }
    .mv_l_wrap #theme {
        width: 100%;
        margin: 0 auto;
		top: 50px;
    }
    .mv-details {
        position: static;
        width: 100%;
        margin-top: clamp(180px, 16vw, 140px);
    }
    #date {
        width: 90%;
        margin: 0 auto 25px;
    }
    #venue_chair {
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }
}

/* トップページ専用：新着情報 */
#new {
    clear: both;
    display: block;
    background: rgba(255, 255, 255, 0.5);
    padding: 40px 30px 30px 30px;
    margin-top: 8%;
	margin-bottom: 15%;
}
#new h3 {
    margin-bottom: 30px;
    padding-bottom: 7px;
    font-size: 2.6rem;
    font-family: 'Noto Serif JP', serif;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: #444;
    position: relative;
}
#new dl {
    height: 200px;
    overflow: auto;
	font-size: 16px;
}
#new dt {
    width: 7em;
    color: #444;
    float: left;
    clear: left;
}
#new dd {
    margin-bottom: 30px;
    color: #444;
    padding: 0 0 30px 7em;
    border-bottom: 1px dotted #444;
}
#new dd a {
    color: #444;
}
@media screen and (max-width: 768px) {
    #new {
        margin: 30px 15px;
        padding: 20px 15px;
    }
    #new h3 {
        margin-bottom: 15px;
        padding-bottom: 10px;
        font-size: 2.2rem;
    }
    #new dt {
        width: 100%;
        float: none;
        padding-bottom: 5px;
    }
    #new dd {
        margin-bottom: 15px;
        padding: 6px 0 15px;
    }
}


/* トップページ：テーマ文字周囲のシャープで柔らかな白いきらめき */
.mv_l_wrap #theme .theme-sparkles {
    position: absolute;
    inset: 0;
    display: block;
    pointer-events: none;
    z-index: 2;
}
.mv_l_wrap #theme .theme-sparkles span {
    position: absolute;
    display: block;
    aspect-ratio: 1;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.65);
    animation: theme-twinkle 4.2s ease-in-out infinite;
}
/* 白い光のぼかし：紫色の縁取りをなくす */
.mv_l_wrap #theme .theme-sparkles span::before {
    content: "";
    position: absolute;
    inset: -25%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.85) 0%, rgba(255,255,255,0.58) 19%, rgba(255,255,255,0.25) 40%, rgba(255,255,255,0) 70%);
    filter: blur(2px);
}
/* 中心は先端が尖った4方向の星形 */
.mv_l_wrap #theme .theme-sparkles span::after {
    content: "";
    position: absolute;
    inset: 0;
    background: #fff;
    clip-path: polygon(
        50% 0%, 53% 41%, 60% 47%, 100% 50%,
        60% 53%, 53% 59%, 50% 100%, 47% 59%,
        40% 53%, 0% 50%, 40% 47%, 47% 41%
    );
    filter: drop-shadow(0 0 3px rgba(255,255,255,0.9));
}
@keyframes theme-twinkle {
    0%, 100% {
        opacity: 0.12;
        transform: translate(-50%, -50%) scale(0.65);
    }
    15%, 68% {
        opacity: 0.95;
        transform: translate(-50%, -50%) scale(1.08);
    }
    82% {
        opacity: 0.55;
        transform: translate(-50%, -50%) scale(0.85);
    }
}
@media screen and (max-width: 768px) {
    .mv_l_wrap #theme .theme-sparkles span {
        max-width: 13px;
    }
    .mv_l_wrap #theme .theme-sparkles .sparkle-medium {
        max-width: 21px;
    }
    .mv_l_wrap #theme .theme-sparkles .sparkle-large {
        max-width: 40px;
    }
}
@media (prefers-reduced-motion: reduce) {
    .mv_l_wrap #theme .theme-sparkles span {
        animation: none;
        opacity: 0.65;
    }
}

/* English home: live-text replacement for Japanese-only MV artwork */
.en-mv-copy {
    padding: 28px 18px 38px;
    text-align: center;
    color: #29456a;
    text-shadow: 0 1px 12px rgba(255,255,255,.9);
}
.en-mv-copy h2 {
    font-size: clamp(28px, 4vw, 48px);
    line-height: 1.25;
    font-weight: 700;
}
.en-mv-sub {
    font-size: clamp(17px, 2.5vw, 27px);
    margin: 12px 0 28px;
}
.en-mv-date {
    font-size: clamp(18px, 2.4vw, 27px);
    font-weight: 700;
    margin-bottom: 15px;
}
.en-mv-venue, .en-mv-president {
    font-size: clamp(14px, 1.7vw, 20px);
    margin-bottom: 9px;
}