:root{
  --bg:#0b0a1a; --bg2:#121029; --card:#17143a; --line:rgba(255,255,255,.09);
  --ink:#f3f1ff; --sub:#b9b4d9; --mute:#8a85ad;
  --purple:#9b5cf6; --pink:#f472b6; --lamp:#fbbf5a;
  --grad:linear-gradient(120deg,var(--purple),var(--pink));
  --r:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Zen Kaku Gothic New",system-ui,sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
header{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
header.scrolled{background:rgba(11,10,26,.85);backdrop-filter:blur(12px);border-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700}
.brand img{width:36px;height:36px;border-radius:8px}
.nav ul{display:flex;gap:26px;list-style:none;font-size:.9rem}
.nav ul a{text-decoration:none;color:var(--sub)}
.nav ul a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 8px 30px rgba(155,92,246,.35)}
.btn-ghost{border:1px solid rgba(255,255,255,.25);color:var(--ink)}
.btn-sm{padding:8px 18px;font-size:.88rem}
@media(max-width:820px){.nav ul{display:none}}

/* hero */
.hero{position:relative;min-height:min(100svh,860px);display:flex;align-items:center;padding:110px 0 70px;overflow:hidden;
  background:radial-gradient(ellipse 80% 60% at 70% 20%,rgba(155,92,246,.28),transparent 60%),radial-gradient(ellipse 60% 50% at 10% 90%,rgba(244,114,182,.16),transparent 60%),var(--bg)}
#stars{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.moon{position:absolute;right:8%;top:16%;width:110px;height:110px;border-radius:50%;box-shadow:-22px 12px 0 0 #fde9b6;opacity:.85;filter:drop-shadow(0 0 40px rgba(253,233,182,.35))}
.hero-in{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;font-size:.85rem;letter-spacing:.2em;color:var(--pink);margin-bottom:18px}
h1{font-size:clamp(2.1rem,5.4vw,3.6rem);line-height:1.3;font-weight:900;letter-spacing:.02em}
h1 .g{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:22px 0 34px;color:var(--sub);font-size:1.05rem;max-width:34em}
.cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-logo{justify-self:center;width:min(320px,70vw);border-radius:28px;box-shadow:0 30px 80px rgba(155,92,246,.35),0 0 0 1px var(--line)}
.stats{display:flex;gap:34px;margin-top:44px;flex-wrap:wrap}
.stat b{display:block;font-size:1.9rem;font-weight:900;line-height:1.2}
.stat span{font-size:.82rem;color:var(--mute)}
@media(max-width:820px){.hero-in{grid-template-columns:1fr}.hero-logo{order:-1;width:170px}.moon{display:none}}

/* sections */
section{padding:96px 0}
.alt{background:var(--bg2)}
.sec-h{margin-bottom:44px}
.sec-h small{display:block;font-size:.8rem;letter-spacing:.25em;color:var(--pink);margin-bottom:6px}
.sec-h h2{font-size:clamp(1.6rem,3.4vw,2.2rem);font-weight:900;line-height:1.4}
.sec-h p{color:var(--sub);margin-top:12px;max-width:40em}

/* about */
.mv{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:28px}
.mv div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.mv h3{font-size:.82rem;letter-spacing:.2em;color:var(--lamp);margin-bottom:10px}
.mv p{font-size:1.2rem;font-weight:700;line-height:1.6}
.about-t{color:var(--sub);max-width:46em}
@media(max-width:700px){.mv{grid-template-columns:1fr}}

/* activities */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 26px}
.feat .ic{font-size:1.7rem;width:54px;height:54px;border-radius:14px;display:grid;place-items:center;background:rgba(155,92,246,.15);margin-bottom:16px}
.feat h3{font-size:1.1rem;margin-bottom:8px}
.feat p{color:var(--sub);font-size:.93rem}
@media(max-width:860px){.grid3{grid-template-columns:1fr}}

/* schedule */
.sched{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:start}
.regular{background:var(--grad);border-radius:var(--r);padding:34px;color:#fff}
.regular .d{font-size:2.3rem;font-weight:900;line-height:1.25}
.regular p{opacity:.92;margin-top:10px}
.dates{list-style:none;display:grid;gap:10px}
.dates li{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 18px}
.dates .day{font-weight:900;font-size:1.15rem;min-width:6.2em}
.dates .t{color:var(--sub);font-size:.92rem}
.dates .tag{margin-left:auto;font-size:.75rem;padding:3px 10px;border-radius:999px;background:rgba(251,191,90,.15);color:var(--lamp)}
.note{font-size:.82rem;color:var(--mute);margin-top:12px}
@media(max-width:820px){.sched{grid-template-columns:1fr}}

/* join */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:s;margin-bottom:40px}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:30px 24px 26px}
.step::before{counter-increment:s;content:"STEP " counter(s);font-size:.75rem;letter-spacing:.15em;color:var(--pink);font-weight:700}
.step h3{margin:6px 0 6px;font-size:1.1rem}
.step p{color:var(--sub);font-size:.92rem}
.join-box{text-align:center;padding:50px 24px;border-radius:26px;background:radial-gradient(ellipse at top,rgba(155,92,246,.35),transparent 70%),var(--card);border:1px solid var(--line)}
.join-box h3{font-size:clamp(1.3rem,3vw,1.8rem);margin-bottom:10px}
.join-box p{color:var(--sub);margin-bottom:26px}
@media(max-width:820px){.steps{grid-template-columns:1fr}}

/* sponsors */
.sponsors{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.sponsors div{background:#fff;border-radius:14px;height:110px;display:grid;place-items:center;padding:18px 26px}
.sponsors img{max-height:70px;object-fit:contain}
@media(max-width:700px){.sponsors{grid-template-columns:repeat(2,1fr)}.sponsors div{height:86px;padding:14px}}

/* faq */
details{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:12px}
summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::after{content:"＋";color:var(--pink)}
details[open] summary::after{content:"－"}
details p{padding:0 22px 20px;color:var(--sub)}

/* footer */
footer{border-top:1px solid var(--line);padding:48px 0 36px;color:var(--mute);font-size:.88rem}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot .brand{color:var(--ink);margin-bottom:10px}
.foot a{color:var(--sub)}
.copy{margin-top:30px;font-size:.78rem}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* board */
.board{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:18px}
.member{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 20px;text-align:center}
.avatar{width:96px;height:96px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;font-size:2rem;font-weight:900;color:#fff;background:var(--grad);object-fit:cover}
.member .role{font-size:.78rem;letter-spacing:.1em;color:var(--pink)}
.member h3{font-size:1.15rem;margin:2px 0 0}
.member .en{font-size:.75rem;color:var(--mute)}
.bio{list-style:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--line);text-align:left;font-size:.85rem;color:var(--sub);display:grid;gap:4px}
.bio li::before{content:"・"}
.bio.tbd{text-align:center;color:var(--mute)}
.bio.tbd li::before{content:none}
.board-lg{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.board-lg .member{text-align:left;display:grid;grid-template-columns:96px 1fr;gap:0 20px;align-items:center;padding:28px}
.board-lg .avatar{margin:0}
.board-lg .bio{grid-column:1/-1;margin-top:18px}
.page-hero{padding:150px 0 40px;background:radial-gradient(ellipse 70% 80% at 70% 0%,rgba(155,92,246,.25),transparent 60%)}
.back{display:inline-block;margin-top:40px;color:var(--sub);text-decoration:none}
.back:hover{color:var(--ink)}

/* join conditions */
.conds{list-style:none;display:grid;gap:12px;margin-bottom:28px}
.conds li{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-weight:700}
.conds li::before{content:"✓";flex:none;width:26px;height:26px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-size:.85rem}
.closed{display:inline-block;font-size:.8rem;padding:4px 14px;border-radius:999px;border:1px solid rgba(251,191,90,.4);color:var(--lamp);margin-bottom:14px}
.referral{margin-top:20px;font-size:.88rem;color:var(--mute)}
.referral a{color:var(--sub)}
.center{text-align:center;margin-top:36px}
.board:not(.board-lg) .en{display:none}
.board-lg .member.wide{grid-column:1/-1;grid-template-columns:140px 1fr}
.board-lg .wide .avatar{width:140px;height:140px}
.member .title{font-size:.85rem;color:var(--sub);margin-top:6px}
.more{grid-column:1/-1;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:28px}
.intro{color:var(--sub);font-size:.95rem}
dl.bio{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0;padding:0;border:0;font-size:.88rem}
dl.bio dt{color:var(--lamp);font-weight:700}
dl.bio dd{color:var(--sub)}
@media(max-width:760px){.more{grid-template-columns:1fr}.board-lg .member.wide{grid-template-columns:96px 1fr}.board-lg .wide .avatar{width:96px;height:96px}}
.more dl.bio{grid-column:auto;margin-top:0}
.special{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center;background:var(--card);border:1px solid rgba(251,191,90,.35);border-radius:var(--r);padding:22px;margin-bottom:28px}
.special[hidden]{display:none}
.special img{border-radius:12px;width:100%}
.special .tag{font-size:.75rem;padding:3px 12px;border-radius:999px;background:rgba(251,191,90,.15);color:var(--lamp)}
.special .when{font-size:1.3rem;font-weight:900;margin:10px 0 4px}
.special h3{font-size:1.15rem;line-height:1.6}
.special .who{color:var(--sub);margin-top:8px}
.dates .t b{color:var(--lamp);font-weight:700}
@media(max-width:820px){.special{grid-template-columns:1fr;padding:16px}}
.dates .day,.dates .tag{white-space:nowrap}

/* movie */
.movie-sec{padding:40px 0 96px}
.movie{position:relative;max-width:960px;margin:0 auto;border-radius:22px;overflow:hidden;aspect-ratio:16/9;background:#140f2e;
  box-shadow:0 30px 90px rgba(155,92,246,.35),0 0 0 1px rgba(255,255,255,.1)}
.movie::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.7;pointer-events:none;z-index:2}
.movie video{width:100%;height:100%;display:block;object-fit:cover}
.movie-play{position:absolute;inset:0;z-index:1;display:flex;align-items:flex-end;justify-content:flex-end;gap:14px;padding:clamp(14px,3vw,30px);border:0;cursor:pointer;
  background:linear-gradient(to top,rgba(11,10,26,.6),rgba(11,10,26,0) 45%);color:#fff;font-family:inherit}
.movie-play .ring{width:72px;height:72px;border-radius:50%;display:grid;place-items:center;font-size:22px;padding-left:5px;flex:none;
  background:var(--grad);transition:transform .25s;animation:pulse 2.4s infinite}
.movie-play:hover .ring{transform:scale(1.08)}
.movie-play .lbl{order:-1;font-weight:700;font-size:1.05rem;text-align:right;line-height:1.4;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.movie-play .lbl small{display:block;font-weight:400;font-size:.78rem;color:var(--sub)}
.movie.playing .movie-play{display:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(244,114,182,.45)}70%{box-shadow:0 0 0 22px rgba(244,114,182,0)}100%{box-shadow:0 0 0 0 rgba(244,114,182,0)}}
@media(max-width:600px){.movie{border-radius:14px}.movie-play .ring{width:48px;height:48px;font-size:16px}.movie-play .lbl{font-size:.85rem}.movie-play .lbl small{display:none}}
@media(prefers-reduced-motion:reduce){.movie-play .ring{animation:none}}
dl.bio dt.dot{color:var(--mute);font-weight:400}

/* news */
.news-sec[hidden]{display:none}
.news{display:grid;gap:18px}
.nitem{display:grid;grid-template-columns:minmax(0,340px) 1fr;gap:26px;align-items:start;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.nitem.noimg{grid-template-columns:1fr}
.nimg img{width:100%;border-radius:12px;display:block}
.ntags{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:8px}
.ncat{font-size:.75rem;padding:3px 12px;border-radius:999px;background:rgba(155,92,246,.2);color:#d9c5ff}
.nstate{font-size:.75rem;padding:3px 12px;border-radius:999px;background:rgba(251,191,90,.15);color:var(--lamp)}
.nstate.end{background:rgba(255,255,255,.08);color:var(--mute)}
.nitem h3{font-size:1.2rem;line-height:1.5}
.nwhen{color:var(--ink);font-weight:700;margin-top:6px}
.ntext{color:var(--sub);font-size:.93rem;margin:10px 0 16px}
.nitem.closed{opacity:.6}
@media(max-width:760px){.nitem{grid-template-columns:1fr;padding:16px;gap:14px}}
.special.noimg{grid-template-columns:1fr}
.special .desc{color:var(--sub);font-size:.9rem;margin-top:10px;line-height:1.8}