:root{
  --bg:#17151c; --panel:#1f1c26; --panel2:#262230; --line:#34303f;
  --text:#f4efe6; --muted:#a8a2b3; --gold:#d9a441; --blue:#5aa0ff;
  --serif:"Noto Serif JP","Yu Mincho","Hiragino Mincho ProN",serif;
  --sans:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.9;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(1120px,100% - 48px);margin-inline:auto}
.narrow{width:min(820px,100% - 48px)}

/* header */
header.site{position:sticky;top:0;z-index:10;background:rgba(23,21,28,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{white-space:nowrap;display:flex;align-items:center;gap:12px;color:var(--text);font-family:var(--serif);font-weight:700;font-size:1.05rem;letter-spacing:.06em}
.brand:hover{text-decoration:none}
nav ul{display:flex;gap:4px;margin:0;padding:0;list-style:none;flex-wrap:wrap}
nav a{display:block;white-space:nowrap;padding:8px 10px;color:var(--muted);font-size:.9rem;letter-spacing:.06em;border-bottom:2px solid transparent}
nav a:hover{color:var(--text);text-decoration:none}
nav a.current{color:var(--gold);border-bottom-color:var(--gold)}

/* common */
.eyebrow{margin:0 0 .4rem;color:var(--gold);font-size:.78rem;letter-spacing:.32em;text-transform:uppercase;font-weight:500}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.5;margin:0}
h2{font-size:1.7rem;letter-spacing:.06em;margin-bottom:1.6rem}
.serif{font-size:1.45rem}
.block{padding:88px 0}
.block.alt{background:var(--panel)}
.btn{display:inline-block;padding:13px 30px;background:var(--gold);color:#17151c;font-weight:700;letter-spacing:.1em;border-radius:2px;margin-right:12px}
.btn:hover{text-decoration:none;filter:brightness(1.1)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--muted)}
.cta{margin:2rem 0 0}
.more{margin-top:2rem}

/* page head */
.pagehead{padding:72px 0 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#1d1a26,var(--bg))}
.pagehead h1{font-size:2.1rem;letter-spacing:.1em}
.subnav{display:flex;gap:8px;list-style:none;margin:28px 0 0;padding:0;flex-wrap:wrap}
.subnav a{display:block;padding:7px 18px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.9rem}
.subnav a.current,.subnav a:hover{border-color:var(--gold);color:var(--gold);text-decoration:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 88px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:32px}
.hero h1{font-size:clamp(1.6rem,2.9vw,2.6rem);letter-spacing:.06em;margin:.4rem 0 1.6rem}
.lead{color:var(--muted);font-size:1.02rem}
.hero-art{position:relative;aspect-ratio:1;width:min(520px,100%);justify-self:center}
.diamond{position:absolute;inset:14%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:0;transform:rotate(45deg)}
.t{display:block;background-size:cover}
.t1{background:linear-gradient(135deg,#0a0e2a,#26306e)}
.t2{background:linear-gradient(135deg,#1b2a6a,#4b3a8a)}
.t3{background:linear-gradient(135deg,#6aa9ff,#cfe3ff)}
.t4{background:linear-gradient(135deg,#0d1236,#1c2468)}
.t5{background:transparent}
.t6{background:linear-gradient(135deg,#e8efff,#f6f9ff);opacity:.9}
.t7{background:linear-gradient(135deg,#2a1b5a,#6a3fa0)}
.t8{background:linear-gradient(135deg,#3b4fb0,#6d8bea)}
.t9{background:linear-gradient(135deg,#1a2160,#3c2f80)}
.t1,.t2,.t4,.t7,.t8,.t9{background-image:radial-gradient(circle at 20% 30%,#fff 0 1px,transparent 1.5px),radial-gradient(circle at 70% 65%,#fff 0 1px,transparent 1.5px),radial-gradient(circle at 45% 85%,#cfe 0 .8px,transparent 1.3px)}
.t1{background-color:#0a0e2a}.t2{background-color:#1b2a6a}.t4{background-color:#0d1236}.t7{background-color:#2a1b5a}.t8{background-color:#3b4fb0}.t9{background-color:#1a2160}
.orbits{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:rgba(255,255,255,.75);stroke-width:1.2}
.orbits .dot{fill:#fff;stroke:none}
.orbits .dot.s{opacity:.8}
.emblem{position:absolute;left:50%;top:50%;width:49%;height:auto;transform:translate(-50%,-50%);filter:drop-shadow(0 8px 24px rgba(0,0,0,.55))}

/* cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:28px 24px}
.block.alt .card{background:var(--panel2)}
.card .no,.row .no{display:block;font-family:var(--serif);color:var(--gold);font-size:1.6rem;margin-bottom:.4rem}
.card h3{font-size:1.02rem;margin-bottom:.9rem}
.card p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.8}

.two{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.check{list-style:none;padding:0;margin:0 0 1.4rem}
.check li{position:relative;padding:.5rem 0 .5rem 1.6rem;border-bottom:1px solid var(--line)}
.check li::before{content:"";position:absolute;left:2px;top:1.15rem;width:7px;height:7px;background:var(--gold);transform:rotate(45deg)}
.news{list-style:none;padding:0;margin:0}
.news li{display:flex;gap:20px;padding:.75rem 0;border-bottom:1px solid var(--line);font-size:.93rem}
.news time{flex:none;color:var(--gold);font-family:var(--serif);letter-spacing:.06em}

/* inner pages */
.philosophy{font-family:var(--serif);font-size:1.25rem;line-height:2.1;margin:0 0 2.4rem}
.rules{list-style:none;padding:0;margin:0}
.rules li{display:flex;gap:20px;padding:1.2rem 0;border-top:1px solid var(--line)}
.rules li>span{flex:none;display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--gold);color:var(--gold);font-family:var(--serif);transform:rotate(45deg)}
.rules li>span{writing-mode:horizontal-tb}
.rules p{margin:0}
.rules strong{color:var(--gold);font-weight:500}
.outline{margin:0}
.outline>div{display:grid;grid-template-columns:160px 1fr;gap:24px;padding:1.2rem 0;border-bottom:1px solid var(--line)}
.outline dt{color:var(--gold);letter-spacing:.12em;font-size:.92rem}
.outline dd{margin:0}
.row{display:grid;grid-template-columns:70px 1fr;gap:18px;padding:1.8rem 0;border-bottom:1px solid var(--line)}
.row h3{font-size:1.15rem;margin-bottom:.6rem}
.row p{margin:0;color:var(--muted)}
.lead-dark{font-size:1.05rem}
.mailbox{margin:2rem 0;padding:2rem;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:6px;font-family:var(--serif);font-size:1.6rem;letter-spacing:.04em}
.note{color:var(--muted);font-size:.9rem}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:1.4rem 0 2rem}
.thumbs img{width:100%;border:1px solid var(--line);border-radius:4px;display:block}
.videos{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.videos iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:4px;background:#000}

/* footer */
footer.site{border-top:1px solid var(--line);padding:56px 0 36px;background:#121016;color:var(--muted);font-size:.88rem}
.foot-grid{display:flex;gap:80px;flex-wrap:wrap;margin-bottom:28px}
.foot-name{font-family:var(--serif);color:var(--text);font-size:1.1rem;margin:0 0 .5rem}
.foot-label{margin:0 0 .3rem;color:var(--gold);letter-spacing:.24em;font-size:.75rem;text-transform:uppercase}
footer p{margin:0}
.notice{font-size:.75rem;line-height:1.8;margin:0 0 1rem;color:#7d788a}
.copy{font-size:.75rem;color:#7d788a}

@media (max-width:860px){
  .hero-grid,.two{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .bar{flex-wrap:wrap;padding:10px 0}
  .outline>div{grid-template-columns:1fr;gap:4px}
  .thumbs,.videos{grid-template-columns:1fr}
}

/* tiles with character art */
.t{position:relative;overflow:hidden}
.t img{position:absolute;left:-21%;top:-21%;width:142%;height:142%;object-fit:cover;transform:rotate(-45deg)}

/* tighter spacing / clickable cards */
a.card{display:block;color:inherit}
a.card:hover{text-decoration:none;border-color:var(--gold);transform:translateY(-2px)}
.card{transition:border-color .2s,transform .2s}
.hero{padding-bottom:32px}
.hero + .block{padding-top:32px}
.pagehead + main .block{padding-top:36px}
.row{padding:1.2rem 0;scroll-margin-top:90px}

/* hero art: keep inside its box, smaller emblem so the character tiles stay visible */
.hero-grid>*{min-width:0}
.hero-art{max-width:100%}
.emblem{width:38%}

/* business cards: soft gold pulse on hover */
@keyframes goldpulse{0%,100%{background-color:rgba(217,164,65,.04)}50%{background-color:rgba(217,164,65,.18)}}
a.card:hover{animation:goldpulse 1.8s ease-in-out infinite}

/* business page accordion (animated, one open at a time) */
.row{display:block;padding:0;scroll-margin-top:90px;transition:background .4s}
.row h3{margin:0}
.head{display:grid;grid-template-columns:70px 1fr;align-items:center;gap:18px;width:100%;padding:1.3rem 0;background:none;border:0;color:inherit;font:inherit;text-align:left;cursor:pointer}
.head .no{margin:0}
.head .title{font-family:var(--serif);font-weight:700;font-size:1.15rem;line-height:1.5;transition:color .25s}
.head:hover .title,.row.open .title{color:var(--gold)}
.head:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.row.open{background:linear-gradient(90deg,rgba(217,164,65,.07),transparent)}
.body{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .45s ease,opacity .35s ease}
.row.open .body{grid-template-rows:1fr;opacity:1}
.clip{overflow:hidden;min-height:0}
.inner{padding:0 0 1.6rem 88px}
.inner p{margin:0;color:var(--muted)}
@media (prefers-reduced-motion:reduce){.body{transition:none}}

/* tighter inner pages (company etc.) */
.pagehead{padding:44px 0 20px}
.subnav{margin-top:18px}
.pagehead + main .block{padding-top:16px;padding-bottom:56px}
.pagehead + main .block h2.serif{margin-bottom:.6rem}
.outline>div{padding:.85rem 0}
.rules li{padding:.9rem 0}
.philosophy{margin-bottom:1.4rem}

/* contact: mail box with copy button */
.mailbox{display:flex;align-items:center;justify-content:center;gap:20px;flex-wrap:wrap}
.mailbox a{color:var(--text)}
.copybtn{font:inherit;font-family:var(--sans);font-size:.85rem;letter-spacing:.08em;padding:8px 18px;background:transparent;color:var(--gold);border:1px solid var(--gold);border-radius:2px;cursor:pointer;transition:background .2s,color .2s}
.copybtn:hover{background:rgba(217,164,65,.15)}
.copybtn.ok{background:var(--gold);color:#17151c}

.mailbox a.copybtn{display:inline-block;font-family:var(--sans);font-size:.85rem;letter-spacing:.08em;padding:9px 20px;background:var(--gold);color:#17151c;border:1px solid var(--gold);border-radius:2px;font-weight:700}
.mailbox a.copybtn:hover{text-decoration:none;filter:brightness(1.1)}

.lead-dark{font-size:.92rem;line-height:1.9}


.half{max-width:760px}
.hero + .block + .block.alt{padding-top:56px;padding-bottom:56px}


/* request section: tighter */
.hero + .block + .block.alt{padding-top:36px;padding-bottom:36px}
.block.alt h2{margin-bottom:.8rem}
.block.alt .check{margin-bottom:.8rem}
.block.alt .check li{padding:.3rem 0 .3rem 1.6rem}
.block.alt .check li::before{top:.8rem}
.block.alt p{margin:.4rem 0}
.block.alt .cta{margin-top:1rem}

/* hero tiles: gentle twinkle (opacity only, GPU-friendly) */
@keyframes twinkle{0%,100%{opacity:1}50%{opacity:.45}}
.t{animation:twinkle 4s ease-in-out infinite;will-change:opacity}
.t1{animation-duration:3.6s;animation-delay:-.4s}
.t2{animation-duration:4.4s;animation-delay:-2.1s}
.t3{animation-duration:3.9s;animation-delay:-1.2s}
.t4{animation-duration:4.8s;animation-delay:-3s}
.t5{animation:none}
.t6{animation-duration:4.1s;animation-delay:-.9s}
.t7{animation-duration:3.4s;animation-delay:-2.6s}
.t8{animation-duration:5s;animation-delay:-1.7s}
.t9{animation-duration:4.2s;animation-delay:-3.4s}
@media (prefers-reduced-motion:reduce){.t{animation:none}}

/* planets travel exactly along the orbit rings (centre 260,260; radii 215 / 250 / 170) */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes spinrev{to{transform:rotate(-360deg)}}
.orbit{transform-origin:260px 260px}
.o1{animation:spin 45s linear infinite;animation-delay:-28.1s}
.o2{animation:spinrev 70s linear infinite;animation-delay:-62.2s}
.o3{animation:spin 30s linear infinite;animation-delay:-26.7s}
@media (prefers-reduced-motion:reduce){.orbit{animation:none}}

/* all planets orbit the same way (clockwise) */
.o2{animation:spin 70s linear infinite;animation-delay:-7.8s}
@media (prefers-reduced-motion:reduce){.o2{animation:none}}


/* top page: pull everything from "事業内容" upward */
body.home .hero{padding:40px 0 0}
body.home .hero + .block{padding-top:8px;padding-bottom:32px}
body.home .hero + .block h2{margin-bottom:1rem}
body.home .block.alt,body.home .hero + .block + .block.alt{padding-top:28px;padding-bottom:28px}
body.home .block.alt + .block{padding-top:28px;padding-bottom:36px}
body.home .card{padding:22px 22px}
body.home .cards{gap:16px}
body.home .card h3{margin-bottom:.6rem}

/* background: stars drifting past a travelling spaceship (3 parallax layers, transform-only animation) */
.stars{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.sl{position:absolute;top:0;left:0;width:200%;height:100%;background-repeat:repeat-x;background-size:50% 100%;will-change:transform;animation:flow linear infinite}
.s1{background-image:url(../img/stars1.png);animation-duration:180s}
.s2{background-image:url(../img/stars2.png);animation-duration:110s}
.s3{background-image:url(../img/stars3.png);animation-duration:60s}
@keyframes flow{to{transform:translate3d(-50%,0,0)}}
@media (prefers-reduced-motion:reduce){.sl{animation:none}}
header.site,main,footer.site{position:relative;z-index:1}
header.site{z-index:10}
.block.alt{background:rgba(31,28,38,.82)}
footer.site{background:rgba(18,16,22,.92)}
.pagehead{background:linear-gradient(180deg,rgba(29,26,38,.85),rgba(23,21,28,0))}

/* ===== phone layout (<= 600px) ===== */
html{-webkit-text-size-adjust:100%}
@media (max-width:600px){
  body{font-size:15px;line-height:1.85}
  .wrap,.narrow{width:calc(100% - 32px)}
  h2{font-size:1.4rem;margin-bottom:1.1rem}
  .serif{font-size:1.2rem}
  .block{padding:44px 0}

  /* header: brand on top, nav as one swipeable row */
  .bar{flex-direction:column;align-items:flex-start;gap:0;padding:8px 0 0;min-height:0}
  .brand{font-size:.98rem}
  .brand img{width:30px;height:30px}
  nav{width:100%}
  nav ul{flex-wrap:nowrap;overflow-x:auto;gap:0;scrollbar-width:none;-webkit-overflow-scrolling:touch;margin:0 -16px;padding:0 16px}
  nav ul::-webkit-scrollbar{display:none}
  nav a{padding:12px 11px;font-size:.84rem;letter-spacing:.03em}

  /* hero */
  body.home .hero{padding:24px 0 0}
  .hero-grid{gap:8px}
  .hero h1{font-size:1.55rem;letter-spacing:.03em;margin:.3rem 0 1rem}
  .lead{font-size:.92rem}
  .hero-art{width:100%;margin-top:4px}
  .cta{margin-top:1.4rem}
  .btn{padding:12px 24px}

  /* cards: one column */
  .cards,body.home .cards{grid-template-columns:1fr;gap:12px}
  body.home .card{padding:18px 18px}
  .card .no{font-size:1.35rem;margin-bottom:.1rem}
  body.home .card h3{font-size:1rem;margin-bottom:.4rem}
  .card p{font-size:.88rem}
  body.home .hero + .block{padding-top:12px;padding-bottom:28px}
  body.home .block.alt,body.home .hero + .block + .block.alt{padding-top:28px;padding-bottom:28px}
  body.home .block.alt + .block{padding-top:24px;padding-bottom:32px}

  /* news: date above text */
  .news li{flex-direction:column;gap:2px;padding:.65rem 0}

  /* inner pages */
  .pagehead{padding:28px 0 14px}
  .pagehead h1{font-size:1.5rem}
  .subnav{gap:6px;margin-top:14px}
  .subnav a{padding:6px 14px;font-size:.84rem}
  .pagehead + main .block{padding-top:12px;padding-bottom:40px}
  .philosophy{font-size:1.05rem;line-height:1.95}
  .philosophy br{display:none}
  .rules li{gap:14px}
  .outline>div{padding:.75rem 0}
  .head{grid-template-columns:44px 1fr;gap:10px;padding:1.05rem 0}
  .head .title{font-size:1.02rem}
  .inner{padding:0 0 1.3rem 54px}
  .mailbox{padding:1.2rem .8rem;font-size:1.05rem;overflow-wrap:anywhere}
  .lead-dark{font-size:.9rem}
  .note{font-size:.84rem}

  /* footer */
  footer.site{padding:36px 0 28px}
  .foot-grid{gap:20px;flex-direction:column}
}

@media (max-width:600px){
  nav ul{margin:0 -8px;padding:0 8px;justify-content:space-between}
  nav a{padding:12px 7px;font-size:.8rem;letter-spacing:0}
}

/* staff */
.staff-h{margin-top:4rem}
.staff{display:grid;gap:20px;margin-top:1.4rem}
.staff article{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:28px 28px 24px}
.staff .role{margin:0 0 .3rem;color:var(--gold);font-size:.78rem;letter-spacing:.24em}
.staff h3{font-size:1.25rem;margin:0 0 .9rem}
.staff p:last-child{margin:0;color:var(--muted);font-size:.92rem;line-height:1.95}