/* v6：視覚効果。site.css・depth.css の後に読む。
   動きは「入ってくるときに一度」を基本にし、続く動きは仕事の組み方の図の中だけ。
   右下の「動き」ボタンと、OSの「視差効果を減らす」設定で、すべて止まる。 */
:root{--ease:cubic-bezier(.16,.84,.3,1);--ink2:#0B0D0E;--glass:rgba(255,255,255,.045);--glass-line:rgba(255,255,255,.1)}

/* scroll progress */
.fx-progress{position:fixed;top:0;left:0;right:0;height:2px;background:var(--yellow);transform-origin:0 50%;transform:scaleX(var(--p,0));z-index:60;pointer-events:none}

/* header：スクロールすると、すりガラスの帯になって残る */
.site-header{position:fixed;transition:background .35s,border-color .35s,backdrop-filter .35s}
.site-header .wrap{transition:height .35s}
.site-header.is-stuck{background:rgba(17,19,21,.72);-webkit-backdrop-filter:blur(16px) saturate(150%);backdrop-filter:blur(16px) saturate(150%);border-bottom:1px solid rgba(255,255,255,.08)}
.site-header.is-stuck .wrap{height:64px}
.gnav a{position:relative}
.gnav a:not(.gnav-cta)::after{content:"";position:absolute;left:0;right:0;bottom:12px;height:1px;background:var(--yellow);transform:scaleX(0);transform-origin:0 50%;transition:transform .3s var(--ease)}
.gnav a:not(.gnav-cta):hover::after{transform:scaleX(1)}

/* hero：奥行きのある黒。光だまりと細い格子、波は線を一本ずつ描く */
.hero{isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(52% 58% at 74% 34%,rgba(255,255,255,.075),transparent 62%),
             radial-gradient(40% 40% at 71% 29%,rgba(232,237,59,.06),transparent 70%),
             radial-gradient(70% 60% at 10% 110%,rgba(255,255,255,.05),transparent 70%)}
.hero-grid{position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:72px 72px;-webkit-mask-image:radial-gradient(70% 70% at 70% 40%,#000 10%,transparent 75%);mask-image:radial-gradient(70% 70% at 70% 40%,#000 10%,transparent 75%)}
.hero-wave{transform:translate3d(0,var(--py,0px),0);will-change:transform}
/* 各線の長さは原図単位で約1290〜1330。描き終わると原本と同じ実線に戻る */
.fx-on .hero-wave path{stroke-dasharray:1340;stroke-dashoffset:1340;animation:fx-draw 2.6s var(--ease) forwards;animation-delay:calc(var(--i) * 55ms + .2s)}
.fx-on .hero-wave circle{opacity:0;animation:fx-fade .9s ease-out 1.9s forwards}
@keyframes fx-draw{to{stroke-dashoffset:0}}
@keyframes fx-fade{to{opacity:1}}
.hero h1 .ln{display:block;overflow:hidden;padding-bottom:.04em}
.hero h1 .ln > span{display:inline-block}
.fx-on .hero h1 .ln > span{transform:translateY(105%);animation:fx-up 1.1s var(--ease) forwards}
.fx-on .hero h1 .ln:nth-child(2) > span{animation-delay:.14s}
.fx-on .hero .label,.fx-on .hero-sub,.fx-on .hero-cta,.fx-on .hero-wordmark{opacity:0;animation:fx-rise 1s var(--ease) forwards}
.fx-on .hero-wordmark{animation-delay:.05s}
.fx-on .hero .label{animation-delay:.35s}
.fx-on .hero-sub{animation-delay:.5s}
.fx-on .hero-cta{animation-delay:.65s}
@keyframes fx-up{to{transform:none}}
@keyframes fx-rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* buttons */
.btn{position:relative;overflow:hidden;transition:background var(--fb),color var(--fb),border-color var(--fb),box-shadow .35s,transform .35s var(--ease)}
.btn .ar{transition:transform .35s var(--ease)}
.btn:hover .ar{transform:translateY(3px)}
.btn-yellow:hover{box-shadow:0 0 0 4px rgba(232,237,59,.18),0 10px 34px rgba(232,237,59,.22)}
.btn-ghost:hover{box-shadow:0 0 0 1px rgba(255,255,255,.25) inset}

/* reveal：JSが動くときだけ隠す（JSなし・動きなしでは最初から見える） */
.fx-on .fx-r{opacity:0}
.fx-on .fx-r.in{animation:fx-rise-r .95s var(--ease) both;animation-delay:var(--d,0s)}
.fx-on .fx-h{clip-path:inset(0 100% 0 0)}
.fx-on .fx-h.in{animation:fx-wipe 1.15s var(--ease) both;animation-delay:var(--d,0s)}
@keyframes fx-rise-r{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@keyframes fx-wipe{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}

/* services：暗い帯のまま続け、ガラスのカードにする */
.services.dark{background:var(--ink);color:var(--white);border-bottom:0;position:relative;overflow:hidden}
.services.dark::before{content:"";position:absolute;inset:-1px 0 auto;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent)}
.services.dark .label .en,.services.dark h2{color:var(--white)}
.services.dark .services-head p{color:var(--dark-sub)}
.services.dark .svc{background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));border-color:var(--glass-line);color:var(--white);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:border-color .35s,transform .45s var(--ease),box-shadow .45s,background .35s}
.services.dark .svc::after{content:"";position:absolute;left:20px;right:20px;top:0;height:1px;background:var(--yellow);transform:scaleX(0);transform-origin:0 50%;transition:transform .5s var(--ease)}
.services.dark .svc:hover{transform:translateY(-6px);border-color:rgba(232,237,59,.55);box-shadow:0 18px 50px rgba(0,0,0,.45),0 0 0 1px rgba(232,237,59,.15)}
.services.dark .svc:hover::after{transform:scaleX(1)}
.services.dark .svc .grp{color:var(--pale)}
.services.dark .svc .ds{color:var(--dark-sub)}
.services.dark .svc-zoo{background:var(--white);color:var(--ink);border-color:var(--white)}
.services.dark .svc-zoo .grp,.services.dark .svc-zoo .ds{color:var(--gray)}
.services.dark .svc-zoo:hover{background:var(--white)}

/* numbers */
.fx-count{font-variant-numeric:tabular-nums}

/* 三つの深さ：Quanの列に光の筋 */
.vs3-row .c3{position:relative}
.vs3-row:not(.vs3-head) .c3::before{content:"";position:absolute;left:-14px;top:4px;bottom:4px;width:2px;background:var(--yellow);transform:scaleY(0);transform-origin:50% 0;transition:transform .9s var(--ease) .2s}
.vs3-row.seen .c3::before,html:not(.fx-on) .vs3-row .c3::before{transform:scaleY(1)}
.facts3 .hl{position:relative;overflow:hidden}
.facts3 .hl::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 100% 0%,rgba(232,237,59,.16),transparent 60%);pointer-events:none}

/* hourglass：点が順に灯る */
.fx-on .hourglass:not(.seen) circle{opacity:0}
.hourglass circle{transition:opacity .5s ease-out;transition-delay:var(--cd,0s)}

/* 循環の図 */
.loop-wrap figure{transition:opacity 1s var(--ease),transform 1.2s var(--ease)}
.fx-on .loop-wrap figure:not(.seen){opacity:0;transform:scale(.96)}

/* 氷山：LAYERカードと深さの帯をつなぐ */
.ice{position:relative;box-shadow:0 30px 80px rgba(17,19,21,.08)}
.ice .band{transition:opacity .35s}
.ice[data-hl="1"] .band[data-layer="1"],.ice[data-hl="2"] .band[data-layer="2"],.ice[data-hl="3"] .band[data-layer="3"],.ice[data-hl="4"] .band[data-layer="4"]{opacity:.22}
.phase{position:relative;transition:background .3s,box-shadow .3s;cursor:default}
.phase:hover,.phase:focus-within,.phase.is-hl{background:#FBFCE8;box-shadow:inset 0 3px 0 var(--yellow)}
.phase[tabindex]:focus-visible{outline:2px solid var(--ink);outline-offset:-4px}

/* WORKFLOW：暗い節。左の文章をスクロールすると、右の図が切り替わる */
.wf{background:var(--ink2);color:var(--white);position:relative;overflow:clip}
.wf-bg{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(45% 40% at 78% 30%,rgba(255,255,255,.06),transparent 70%),
             linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px) 0 0/48px 48px,
             linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px) 0 0/48px 48px;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(180deg,transparent,#000 12%,#000 88%,transparent)}
.wf .wrap{position:relative}
.wf h2{color:var(--white)}
.wf .lead{color:var(--dark-sub);max-width:40em}
.wf .label .en{color:var(--white)}
.wf-tools{display:flex;justify-content:flex-end;margin-top:24px}
.fx-pause,.fx-toggle{font:500 13px/1 var(--ui);letter-spacing:.04em;min-height:40px;padding:0 16px;border-radius:999px;cursor:pointer;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.04);color:var(--white);transition:background .2s,border-color .2s}
.fx-pause:hover,.fx-toggle:hover{border-color:var(--yellow)}
.fx-pause:focus-visible,.fx-toggle:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}
.wf-scrolly{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.5fr);gap:56px;margin-top:24px}
.wf-steps{position:relative;padding:8vh 0 12vh}
.wf-steps::before{content:"";position:absolute;left:0;top:0;bottom:0;width:1px;background:linear-gradient(180deg,transparent,rgba(255,255,255,.16) 8%,rgba(255,255,255,.16) 92%,transparent)}
.wf-step{position:relative;min-height:clamp(420px,68vh,680px);display:flex;flex-direction:column;justify-content:center;padding:24px 0 24px 32px;opacity:.32;transition:opacity .5s}
.wf-step::before{content:"";position:absolute;left:-4px;top:50%;width:9px;height:9px;background:#3A4046;transition:background .4s,box-shadow .4s}
.wf-step.is-on{opacity:1}
.wf-step.is-on::before{background:var(--yellow);box-shadow:0 0 0 6px rgba(232,237,59,.14),0 0 24px rgba(232,237,59,.5)}
.wf-k{font:600 12px/1 var(--ui);letter-spacing:.16em;color:var(--dark-sub);display:flex;align-items:center;gap:12px}
.wf-k .num{color:var(--yellow);font-size:13px}
.wf-step h3{font-size:28px;line-height:1.45;color:var(--white);margin-top:14px}
.wf-step p{font-size:16px;line-height:1.95;color:var(--dark-sub);margin-top:14px;max-width:30em}
.wf-inline{display:none}
.wf-stage{position:sticky;top:max(96px,calc(50vh - 250px));align-self:start;aspect-ratio:16/9;border-radius:16px;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));border:1px solid var(--glass-line);
  box-shadow:0 40px 120px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.wf-stage::before{content:"";position:absolute;inset:-1px;border-radius:16px;padding:1px;pointer-events:none;
  background:linear-gradient(135deg,rgba(232,237,59,.5),transparent 30%,transparent 70%,rgba(255,255,255,.25));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.wf-num{position:absolute;right:8px;top:-92px;font:700 120px/1 var(--ui);letter-spacing:-.04em;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.16);pointer-events:none;overflow:hidden;height:110px}
.wf-num span{display:block;transition:transform .6s var(--ease),opacity .6s}
.wf-fig{position:absolute;inset:12px;opacity:0;transform:scale(.975) translateY(10px);transition:opacity .6s var(--ease),transform .8s var(--ease);pointer-events:none}
.wf-fig.is-on{opacity:1;transform:none}
.wf-fig svg,.wf-inline svg{width:100%;height:auto}
.wf-svg .wf-node > rect,.wf-svg .wf-node > path{transition:filter .4s}
.fx-on .wf-fig.is-on .wf-node > rect,.fx-on .wf-fig.is-on .wf-node > path{animation:fx-glow 2.8s ease-in-out infinite}
@keyframes fx-glow{0%,100%{filter:drop-shadow(0 0 0 rgba(232,237,59,0))}50%{filter:drop-shadow(0 0 7px rgba(232,237,59,.45))}}

/* APPROACH */
.approach{background:var(--mist)}
.approach .steps{margin-top:40px}
.approach .sub-title{font-size:24px;margin-top:72px}
.approach .places{margin-top:28px}
.place-fig{margin-top:28px;background:var(--white);border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:0 24px 60px rgba(17,19,21,.06)}
.place-fig svg{width:100%;height:auto}
.step::before{transition:transform .6s var(--ease)}
.fx-on .step:not(.seen)::before{transform:rotate(-90deg) scale(.6)}
.place{transition:transform .4s var(--ease)}
.place:hover{transform:translateY(-4px)}

/* how / proof / company：ガラスと影で層をつくる */
.layer{transition:transform .45s var(--ease),box-shadow .45s}
.layer:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(17,19,21,.12)}
.proof-card{box-shadow:0 20px 60px rgba(17,19,21,.06);transition:transform .45s var(--ease),box-shadow .45s}
.proof-card:hover{transform:translateY(-4px);box-shadow:0 28px 70px rgba(17,19,21,.1)}
.view-figure img,.company-grid img{transition:transform 1.2s var(--ease)}
.view-figure:hover img{transform:scale(1.02)}

/* contact：背景の波も描きながら入る */
.contact .wave-bg{transition:opacity 1.6s ease-out,transform 1.8s var(--ease)}
.fx-on .contact:not(.seen) .wave-bg{opacity:0;transform:translateX(40px)}

/* 動きの切り替え */
.fx-toggle{position:fixed;right:16px;bottom:16px;z-index:70;background:rgba(17,19,21,.78);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.fx-still *,.fx-still *::before,.fx-still *::after{animation-play-state:paused!important}
.fx-still .wf-fig .pkt{display:none}
.wf.is-paused *{animation-play-state:paused!important}

@media (prefers-reduced-motion:reduce){
  .hero-wave{transform:none!important}
  .wf-svg .pkt{display:none}
}

@media (max-width:1023px){
  .wf-scrolly{grid-template-columns:minmax(0,1fr);gap:0}
  .wf-steps,.wf-step{min-width:0}
  .wf-stage{display:none}
  .wf-steps{padding:0}
  .wf-step{min-height:0;opacity:1;padding:40px 0 40px 24px}
  .wf-step::before{top:52px;background:var(--yellow)}
  .wf-inline{display:block;margin-top:24px;overflow-x:auto;border:1px solid var(--glass-line);border-radius:12px;padding:8px;background:rgba(255,255,255,.03)}
  .wf-inline svg{min-width:720px}
  .wf-inline::before,.place-fig::before{content:"図は横にスクロールできます";position:sticky;left:0;display:block;width:max-content;font:500 11px/1.4 var(--ui);color:var(--pale);padding:2px 6px 6px}
}
@media (max-width:767px){
  .site-header.is-stuck .wrap{height:56px}
  .wf-step h3{font-size:22px}
  .wf-step p{font-size:15.5px}
  .place-fig{padding:8px;overflow-x:auto}
  .place-fig svg{min-width:720px}
  .approach .sub-title{font-size:20px;margin-top:48px}
  .fx-toggle{right:12px;bottom:12px;min-height:36px;font-size:12px}
}