:root{
  --bg:#07070c; --ink:#fff; --sub:#8a8fa8; --line:rgba(255,255,255,.12);
  --blue:#1ab4ff; --violet:#5b4be0; --magenta:#e04fb0;
  --grad:linear-gradient(115deg,var(--violet),#3f6cf0 50%,var(--blue));
  --en:"Archivo Black",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body.toy{margin:0;min-height:100vh;color:var(--ink);background:var(--bg);overflow-x:hidden;
  font-family:system-ui,-apple-system,"Hiragino Sans","Noto Sans JP","Yu Gothic UI",sans-serif;line-height:1.75}
/* 背景の光のにじみ（ゆっくり動く） */
body.toy::before{content:"";position:fixed;inset:-20%;z-index:0;pointer-events:none;
  background:radial-gradient(40% 35% at 75% 20%,rgba(91,75,224,.28),transparent 70%),
             radial-gradient(35% 30% at 15% 70%,rgba(26,180,255,.14),transparent 70%),
             radial-gradient(30% 25% at 85% 85%,rgba(224,79,176,.12),transparent 70%);
  animation:drift 60s ease-in-out infinite alternate}
@keyframes drift{to{transform:translate(-6%,4%) rotate(8deg)}}
.page{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 20px}
.toy a{color:var(--ink)}
.toy :focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ひし形の記号 */
.dia{display:inline-block;width:8px;height:8px;background:var(--c,var(--magenta));transform:rotate(45deg);flex:none}

/* ---------- ヘッダー ---------- */
.site-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0}
.site-logo{display:block;color:#fff;line-height:0}
.site-logo svg{height:26px;width:auto;aspect-ratio:1180/280}
.site-nav{display:flex;gap:22px}
.site-nav a{font-family:var(--en);font-size:12px;letter-spacing:.2em;text-decoration:none;color:var(--sub);transition:color .2s}
.site-nav a:hover{color:#fff}

/* ---------- ヒーロー ---------- */
.hero{position:relative;margin:0 -20px;padding:clamp(48px,9vw,110px) 20px clamp(90px,12vw,150px);
  overflow:hidden;clip-path:polygon(0 0,100% 0,100% 82%,0 100%);background:linear-gradient(180deg,rgba(255,255,255,.03),transparent)}
.hero h1{margin:0;line-height:0;color:#fff;position:relative;z-index:1}
.hero h1 svg{width:min(640px,78vw);height:auto;aspect-ratio:1180/280}
.hero .studio{margin:18px 0 0;font-family:var(--en);font-size:clamp(11px,1.6vw,14px);letter-spacing:.6em;color:var(--sub)}
.hero .catch{margin:26px 0 0;max-width:30em;font-size:clamp(15px,2vw,18px);position:relative;z-index:1}
.hero-dia{position:absolute;right:6%;top:50%;width:clamp(130px,24vw,260px);aspect-ratio:1;margin-top:calc(clamp(130px,24vw,260px) / -2);
  display:grid;grid-template-columns:1fr 1fr;gap:9%;transform:rotate(45deg);animation:spin 40s linear infinite;opacity:.92}
.hero-dia i:nth-child(1){background:var(--blue)}
.hero-dia i:nth-child(2){background:var(--magenta)}
.hero-dia i:nth-child(3){background:var(--violet)}
.hero-dia i:nth-child(4){background:#b06fe0}
@keyframes spin{from{transform:rotate(45deg)}to{transform:rotate(405deg)}}
.band{height:10px;margin:-58px -20px 0;background:var(--grad);transform:skewY(-3deg);transform-origin:left;position:relative;z-index:2}

/* ---------- セクション見出し ---------- */
.sec{margin:90px 0 0;scroll-margin-top:20px}
.sec-title{display:flex;align-items:center;gap:14px;margin:0 0 28px;font-family:var(--en);font-weight:400;
  font-size:clamp(28px,5vw,48px);letter-spacing:.04em;line-height:1}
.sec-title small{font-family:inherit;font-size:12px;letter-spacing:.3em;color:var(--sub)}
.sec-title::after{content:"";flex:1;height:1px;background:var(--line)}

/* ---------- WORKS（非対称グリッド） ---------- */
.works{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.tile{position:relative;display:flex;flex-direction:column;background:rgba(255,255,255,.025);border:1px solid var(--line)}
.tile.big{grid-column:span 2;grid-row:span 2}
.tile-img{position:relative;display:block;aspect-ratio:1200/630;background:#14141c;overflow:hidden}
.tile.big .tile-img{flex:1;aspect-ratio:auto;min-height:280px;display:flex;align-items:center}
.tile.big .tile-img img{position:relative;height:auto}
.tile.big .tile-img img.bd{position:absolute;inset:0;height:100%;object-fit:cover;filter:blur(28px) brightness(.45);transform:scale(1.25)}
.tile.big:hover .tile-img img.bd{transform:scale(1.25)}
.tile-img img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.8,.2,1)}
.tile-img::after{content:"";position:absolute;left:0;bottom:0;height:3px;width:100%;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.tile:hover .tile-img img:not(.bd){transform:scale(1.04)}
.tile:hover .tile-img::after{transform:scaleX(1)}
.tile-body{position:relative;display:flex;flex-direction:column;flex:1;padding:18px 20px 22px}
.tile.big .tile-body{flex:none}
.tile-act{margin-top:auto}
.tile-no{position:absolute;right:16px;top:-.62em;margin:0;font-family:var(--en);font-size:44px;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.55)}
.tile.big .tile-no{font-size:84px}
.tile-tag{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-size:12px;letter-spacing:.12em;color:var(--sub)}
.tile h3{margin:0 0 8px;font-size:clamp(18px,2vw,22px);line-height:1.35}
.tile.big h3{font-size:clamp(22px,3vw,34px)}
.tile h3 small{display:block;font-size:12px;font-weight:400;color:var(--sub)}
.tile-body>p:not([class]){margin:0 0 16px;font-size:14px;color:var(--sub)}
.tile-act{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.play{display:inline-flex;align-items:center;gap:10px;padding:10px 22px 10px 18px;background:#fff;color:var(--bg) !important;
  font-weight:700;text-decoration:none;clip-path:polygon(0 0,100% 0,calc(100% - 10px) 100%,0 100%);transition:background .2s,color .2s}
.play::before{content:"";width:9px;height:11px;background:currentColor;clip-path:polygon(0 0,100% 50%,0 100%)}
.play:hover,.play:focus-visible{background:var(--blue)}
.sub-link{font-size:13px;color:var(--sub) !important;text-underline-offset:4px}
.sub-link:hover{color:#fff !important}
.tile.next{border-style:dashed;justify-content:center;min-height:100%}
.tile.next .q{display:flex;align-items:center;justify-content:center;aspect-ratio:1200/630;font-family:var(--en);font-size:72px;color:transparent;
  -webkit-text-stroke:1px var(--sub)}
.tile.next a{color:var(--sub) !important}

/* ---------- TOPICS ---------- */
.topics{list-style:none;margin:0;padding:0}
.topics li{display:grid;grid-template-columns:auto 96px 84px 1fr;gap:4px 16px;align-items:baseline;padding:16px 4px;border-bottom:1px solid var(--line)}
.topics li .dia{align-self:center}
.topics time{font-family:var(--en);font-size:13px;letter-spacing:.06em;color:var(--sub)}
.topics .kind{font-size:12px;color:var(--sub)}
.topics li p{margin:0;font-size:14px}

/* ---------- ABOUT ---------- */
.about p{margin:0 0 10px;max-width:42em;color:var(--sub)}
.about a{color:#fff}

/* ---------- フッター ---------- */
.site-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;margin:100px 0 0;padding:28px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--sub)}
.site-foot a{color:var(--sub);text-decoration:none}
.site-foot a:hover{color:#fff}
.site-foot span{margin-left:auto;font-family:var(--en);letter-spacing:.1em}

@media (max-width:720px){
  .site-nav{gap:14px}
  .site-nav a{font-size:10px;letter-spacing:.14em}
  .hero-dia{right:-14%;opacity:.45}
  .works{grid-template-columns:minmax(0,1fr)}
  .tile.big{grid-column:auto;grid-row:auto}
  .tile.big .tile-no{font-size:60px}
  .topics li{grid-template-columns:auto auto 1fr}
  .topics li p{grid-column:1 / -1}
  .site-foot span{margin-left:0}
}

/* ---------- 遊び方ページ / プライバシーポリシー ---------- */
.guide main,.policy main{max-width:760px}
.guide .crumb{margin:8px 0 0;font-size:13px;color:var(--sub)}
.guide .crumb a{color:var(--sub)}
.guide .g-head{padding:28px 0 8px}
.guide .g-head h1{margin:0;font-size:clamp(28px,5vw,46px);line-height:1.25}
.guide .g-tag{margin:8px 0 22px;color:var(--c,var(--blue));font-weight:700}
.guide .g-shot{display:block;max-width:640px;margin:0 0 22px;aspect-ratio:1200/630;background:#14141c;overflow:hidden;border:1px solid var(--line)}
.guide .g-shot img{display:block;width:100%;height:100%;object-fit:cover}
.guide .g-head>p:not(.g-tag){max-width:680px;margin:0 0 22px;color:var(--sub)}
.guide .g-sec{margin:48px 0 0}
.guide .g-sec h2,.policy h2{display:flex;align-items:center;gap:14px;margin:0 0 14px;font-size:20px}
.guide .g-sec h2::before,.policy h2::before{content:"";width:9px;height:9px;flex:none;background:var(--c,var(--blue));transform:rotate(45deg)}
.guide .g-sec p{margin:0 0 12px;color:var(--sub)}
.guide .faq dt{font-weight:700;margin:16px 0 2px}
.guide .faq dd{margin:0;color:var(--sub)}
.guide .hist{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.guide .hist li{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:12px 4px;border-bottom:1px solid var(--line)}
.guide .hist time{font-family:var(--en);color:var(--sub);font-size:13px}
.guide .hist p{margin:0}
.guide .minis{display:flex;flex-wrap:wrap;gap:12px}
.guide .mini{flex:1 1 220px;display:block;padding:16px 20px;border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:700;transition:border-color .2s}
.guide .mini span{display:block;font-size:12px;font-weight:400;color:var(--sub)}
.guide .mini:hover{border-color:var(--blue)}
.guide footer,.policy footer{display:flex;flex-wrap:wrap;gap:10px 24px;margin:80px 0 0;padding:28px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--sub)}
.guide footer a,.policy footer a{color:var(--sub)}
.policy header:not(.site-head){padding:28px 0 8px}
.policy header:not(.site-head) h1{margin:0;font-family:var(--en);font-weight:400;font-size:clamp(26px,4vw,40px);letter-spacing:.04em}
.policy header:not(.site-head) p{margin:6px 0 0;color:var(--sub)}
.policy main p,.policy main li{color:var(--sub)}
.policy main strong{color:var(--ink)}
.policy h2{margin-top:40px}
.policy main a{color:var(--blue)}

/* ---------- オープニング（JS が html に intro-on を付けたときだけ出る） ---------- */
.intro{display:none}
html.intro-on .intro{display:flex;position:fixed;inset:0;z-index:50;align-items:center;justify-content:center;background:var(--bg);color:#fff;
  animation:intro-out .3s ease-in 1.2s forwards}
html.intro-on{overflow:hidden}
.intro svg{width:min(560px,80vw);height:auto;overflow:visible}
.intro .d{transform-box:fill-box;transform-origin:center;animation:intro-d .6s cubic-bezier(.2,.9,.2,1) both}
.intro .d1{--x:-420px;--y:-420px}
.intro .d2{--x:-420px;--y:420px;animation-delay:.06s}
.intro .d3{--x:420px;--y:-420px;animation-delay:.12s}
.intro .d4{--x:420px;--y:420px;animation-delay:.18s}
.intro .word{animation:intro-cut .6s cubic-bezier(.7,0,.2,1) .5s both}
@keyframes intro-d{from{transform:translate(var(--x),var(--y)) rotate(180deg);opacity:0}to{transform:none;opacity:1}}
@keyframes intro-cut{from{clip-path:polygon(0 0,0 0,-20% 100%,-20% 100%)}to{clip-path:polygon(0 0,120% 0,100% 100%,-20% 100%)}}
@keyframes intro-out{to{opacity:0;visibility:hidden}}

@media (prefers-reduced-motion:reduce){
  .intro{display:none !important}
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
}