/* ── WebGL Gallery 共有スタイル ── */
:root{
  --page:#0E0C20; --text:#ECEEF7; --sub:#9498BE; --cyan:#60CEE0;
  --violet:#7C62D6; --blue:#4684E0; --border:#3A3D72;
  --sans:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:var(--page); color:var(--text); font-family:var(--sans);
  -webkit-font-smoothing:antialiased; letter-spacing:.04em;
}

/* ── 個別デモ画面 ── */
body.demo{overflow:hidden}
#gl{position:fixed; inset:0; width:100%; height:100%; display:block; z-index:0}
.fallback{position:fixed; inset:0; display:none; align-items:center; justify-content:center;
  color:var(--sub); font-size:13px; z-index:0; padding:24px; text-align:center}
.ui{position:fixed; left:20px; top:18px; z-index:2; max-width:320px; pointer-events:none}
.ui .no{font-size:11px; letter-spacing:.34em; color:var(--cyan); font-weight:300}
.ui .ti{font-size:19px; letter-spacing:.1em; margin-top:8px; font-weight:400}
.ui .en{font-size:10px; letter-spacing:.32em; color:var(--sub); margin-top:5px}
.ui .de{font-size:11.5px; line-height:1.85; color:var(--sub); margin-top:12px}
.ui .tag{display:inline-block; margin-top:12px; font-size:10px; letter-spacing:.14em;
  color:var(--sub); border:1px solid var(--border); border-radius:20px; padding:4px 11px}
.nav{position:fixed; right:20px; bottom:18px; z-index:2; display:flex; gap:14px; align-items:center}
.nav a{font-size:11px; letter-spacing:.18em; color:var(--sub); text-decoration:none; transition:color .2s}
.nav a:hover{color:var(--cyan)}
.back{position:fixed; left:20px; bottom:18px; z-index:2; font-size:11px; letter-spacing:.22em;
  color:var(--sub); text-decoration:none; transition:color .2s}
.back:hover{color:var(--cyan)}

/* ── ギャラリー一覧 ── */
.shell{max-width:1080px; margin:0 auto; padding:72px 24px 96px}
.head{text-align:center; margin-bottom:8px}
.head .kick{font-size:11px; letter-spacing:.42em; color:var(--cyan); font-weight:300}
.head h1{font-size:30px; font-weight:400; letter-spacing:.12em; margin:18px 0 0}
.head .lead{font-size:13px; color:var(--sub); font-weight:300; line-height:1.9; margin:16px auto 0; max-width:560px}
.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(232px,1fr)); gap:18px; margin-top:30px}
.sect{display:flex; align-items:center; gap:16px; margin-top:54px}
.sect:first-of-type{margin-top:54px}
.sect .lbl{font-size:11px; letter-spacing:.34em; color:var(--cyan); font-weight:300; white-space:nowrap}
.sect .lbl small{display:block; font-size:9.5px; letter-spacing:.22em; color:var(--sub); margin-top:5px}
.sect .ln{flex:1; height:1px; background:linear-gradient(90deg,var(--border),transparent)}
.card{position:relative; display:block; text-decoration:none; color:inherit; border-radius:16px;
  overflow:hidden; border:1px solid var(--border); background:#15132C;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease}
.card:hover{transform:translateY(-4px); border-color:rgba(96,206,224,.5);
  box-shadow:0 20px 44px rgba(0,0,0,.5),0 0 38px rgba(96,206,224,.1)}
.card .thumb{height:140px; position:relative; overflow:hidden}
.card .thumb::after{content:""; position:absolute; inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(21,19,44,.9))}
.card .body{padding:16px 18px 20px; position:relative}
.card .no{font-size:10px; letter-spacing:.28em; color:var(--cyan); font-weight:300}
.card .ti{font-size:15px; letter-spacing:.06em; margin-top:7px}
.card .en{font-size:9.5px; letter-spacing:.26em; color:var(--sub); margin-top:4px}
.card .tag{display:inline-block; margin-top:13px; font-size:9.5px; letter-spacing:.12em;
  color:var(--sub); border:1px solid var(--border); border-radius:18px; padding:3px 10px}
.foot{text-align:center; margin-top:64px; font-size:10.5px; letter-spacing:.18em; color:var(--sub); font-weight:300}

@media (max-width:480px){
  .head h1{font-size:24px}
  .ui{max-width:62vw}
}
@media (prefers-reduced-motion:reduce){
  .card{transition:none}
}