/* ===== YYS corporate site (static) ===== */
:root{
  --bg:#fafaf7; --ink:#14141c; --ink-2:#555566; --line:rgba(20,20,28,.1);
  --card:#ffffff; --dark:#0c0c16; --dark-2:#161625;
  --c1:#6c5ce7; --c2:#00c2ff; --c3:#ff5fa2; --c4:#ffd24a;
  --grad:linear-gradient(120deg,var(--c1),var(--c2) 55%,var(--c3));
  --r:24px; --max:1160px;
  --font:"Inter","Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{width:min(var(--max),100% - 40px);margin-inline:auto}
section{padding:clamp(72px,11vw,140px) 0;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.2em;font-size:.78rem;text-transform:uppercase;color:var(--c1)}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--grad)}
h2.title{font-size:clamp(1.9rem,4.4vw,3.2rem);line-height:1.3;letter-spacing:-.01em;margin:14px 0 18px;font-weight:800}
.lead{color:var(--ink-2);max-width:42em}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* header */
header.site{position:fixed;inset:0 0 auto 0;z-index:50;transition:.3s}
header.site .bar{display:flex;align-items:center;justify-content:space-between;height:68px}
header.site.scrolled{background:rgba(250,250,247,.78);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);border-bottom:1px solid var(--line)}
.logo{font-weight:900;font-size:1.35rem;letter-spacing:.04em;display:flex;align-items:center;gap:10px}
.logo i{width:30px;height:30px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#fff;font-style:normal;font-size:.8rem;box-shadow:0 6px 18px rgba(108,92,231,.45)}
nav.gnav ul{display:flex;gap:6px;align-items:center}
nav.gnav a{padding:8px 14px;border-radius:999px;font-size:.88rem;font-weight:600;transition:.2s}
nav.gnav a:hover{background:rgba(108,92,231,.1);color:var(--c1)}
nav.gnav a.cta{background:var(--ink);color:#fff}
nav.gnav a.cta:hover{background:var(--c1);color:#fff}
.burger{display:none;width:44px;height:44px;border:0;background:var(--ink);border-radius:50%;cursor:pointer;position:relative}
.burger span,.burger span::before{position:absolute;left:13px;width:18px;height:2px;background:#fff;transition:.3s}
.burger span{top:21px}.burger span::before{content:"";left:0;top:-6px}
.burger[aria-expanded=true] span{background:transparent}
.burger[aria-expanded=true] span::before{top:0;transform:rotate(45deg);box-shadow:0 0 0 0 #fff}
.burger[aria-expanded=true] span::after{content:"";position:absolute;left:0;top:0;width:18px;height:2px;background:#fff;transform:rotate(-45deg)}

header.site.on-dark .logo{color:#fff}
@media (min-width:901px){
  header.site.on-dark nav.gnav a:not(.cta){color:#fff}
  header.site.on-dark nav.gnav a:not(.cta):hover{background:rgba(255,255,255,.14);color:#fff}
  header.site.on-dark nav.gnav a.cta{background:#fff;color:var(--ink)}
}

/* hero */
.hero{min-height:100svh;display:grid;align-items:center;background:var(--dark);color:#fff;padding:120px 0 90px;overflow:hidden;isolation:isolate}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.65;z-index:-1;animation:float 18s ease-in-out infinite}
.blob.b1{width:520px;height:520px;background:var(--c1);top:-120px;left:-120px}
.blob.b2{width:460px;height:460px;background:var(--c2);right:-100px;top:15%;animation-delay:-6s;opacity:.5}
.blob.b3{width:380px;height:380px;background:var(--c3);bottom:-120px;left:35%;animation-delay:-11s;opacity:.5}
@keyframes float{50%{transform:translate(60px,-40px) scale(1.12)}}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);background-size:28px 28px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%)}
.hero .tag{display:inline-block;padding:7px 16px;border:1px solid rgba(255,255,255,.28);border-radius:999px;font-size:.8rem;letter-spacing:.14em;backdrop-filter:blur(8px);background:rgba(255,255,255,.06)}
.hero h1{font-size:clamp(2.5rem,8.2vw,6.4rem);line-height:1.12;letter-spacing:-.025em;font-weight:900;margin:26px 0 22px}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line span{display:inline-block;transform:translateY(110%);animation:rise 1s cubic-bezier(.2,.8,.2,1) forwards}
.hero h1 .line:nth-child(2) span{animation-delay:.15s}
@keyframes rise{to{transform:none}}
.hero p.sub{max-width:34em;color:rgba(255,255,255,.78);font-size:clamp(1rem,1.6vw,1.2rem)}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:16px 30px;border-radius:999px;font-weight:700;font-size:.96rem;border:0;cursor:pointer;font-family:inherit;transition:transform .25s,box-shadow .25s}
.btn.primary{background:#fff;color:var(--ink)}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(255,255,255,.25)}
.btn.ghost{border:1px solid rgba(255,255,255,.4);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.dark{background:var(--ink);color:#fff}
.btn.dark:hover{background:var(--c1);transform:translateY(-3px);box-shadow:0 14px 34px rgba(108,92,231,.4)}
.scroll-ind{position:absolute;bottom:26px;left:50%;translate:-50% 0;font-size:.7rem;letter-spacing:.3em;color:rgba(255,255,255,.6);display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-ind::after{content:"";width:1px;height:42px;background:linear-gradient(#fff,transparent);animation:drip 2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* marquee */
.marquee{background:var(--ink);color:#fff;overflow:hidden;padding:20px 0;border-block:1px solid rgba(255,255,255,.1)}
.marquee .track{display:flex;gap:48px;width:max-content;animation:scroll 32s linear infinite}
.marquee span{font-weight:800;font-size:clamp(1.1rem,2.4vw,1.8rem);white-space:nowrap;display:flex;align-items:center;gap:48px}
.marquee span::after{content:"✦";color:var(--c4)}
@keyframes scroll{to{transform:translateX(-50%)}}

/* philosophy */
.mvv{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:34px 30px;transition:transform .35s,box-shadow .35s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(20,20,28,.1)}
.card .no{font-weight:900;font-size:.8rem;letter-spacing:.2em;color:var(--c1)}
.card h3{font-size:1.5rem;margin:8px 0 12px;font-weight:800}
.card p{color:var(--ink-2);font-size:.95rem}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:.5s}
.card:hover::before{transform:scaleX(1)}
.values{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.values b{padding:10px 24px;border-radius:999px;background:var(--grad);color:#fff;font-size:1rem;letter-spacing:.1em}

/* business bento */
.bg-soft{background:#f1f0fb}
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;margin-top:56px}
.bento .tile{grid-column:span 2;border-radius:var(--r);padding:36px 30px;min-height:360px;color:#fff;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:flex-end;transition:transform .4s}
.bento .tile:hover{transform:translateY(-6px) rotate(-.4deg)}
.bento .tile:nth-child(1){grid-column:span 3;background:linear-gradient(145deg,#6c5ce7,#3b2fb6)}
.bento .tile:nth-child(2){grid-column:span 3;background:linear-gradient(145deg,#00a8e8,#1768d6)}
.bento .tile:nth-child(3){grid-column:span 6;min-height:280px;background:linear-gradient(145deg,#ff5fa2,#e0356f)}
.tile .big{position:absolute;top:10px;right:22px;font-size:7rem;font-weight:900;opacity:.16;line-height:1;letter-spacing:-.04em}
.tile h3{font-size:1.55rem;font-weight:800;line-height:1.4}
.tile p{opacity:.92;font-size:.95rem;margin:10px 0 18px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips li{padding:5px 14px;border-radius:999px;background:rgba(255,255,255,.18);font-size:.8rem;font-weight:600;backdrop-filter:blur(4px)}

/* message */
.message{background:var(--dark);color:#fff;overflow:hidden}
.message .blob{opacity:.35}
.msg-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(30px,6vw,90px);align-items:start}
.msg-grid .quote{font-size:clamp(1.6rem,3.6vw,2.6rem);font-weight:800;line-height:1.5}
.msg-body p{color:rgba(255,255,255,.8);margin-bottom:1.1em}
.sign{margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.2);display:flex;gap:18px;align-items:baseline;flex-wrap:wrap}
.sign small{color:rgba(255,255,255,.6)}
.sign strong{font-size:1.4rem;letter-spacing:.1em}

/* company */
.company-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;margin-top:56px;align-items:stretch}
dl.facts{border-top:1px solid var(--line)}
dl.facts div{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:20px 4px;border-bottom:1px solid var(--line)}
dl.facts dt{font-weight:700;color:var(--ink-2);font-size:.9rem}
dl.facts dd a{border-bottom:1px solid var(--c1);color:var(--c1)}
.map{border-radius:var(--r);overflow:hidden;min-height:340px;border:1px solid var(--line);background:#e8e8ef}
.map iframe{width:100%;height:100%;min-height:340px;border:0;filter:saturate(.9)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 20px;text-align:center}
.stat b{display:block;font-size:clamp(1.8rem,3.6vw,2.6rem);font-weight:900;line-height:1.2}
.stat small{color:var(--ink-2);font-size:.8rem}

/* news */
.news-list{margin-top:48px;border-top:1px solid var(--line)}
.news-list details{border-bottom:1px solid var(--line)}
.news-list summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:120px 90px 1fr 24px;align-items:center;gap:16px;padding:24px 6px;transition:.25s}
.news-list summary::-webkit-details-marker{display:none}
.news-list summary:hover{padding-left:16px;color:var(--c1)}
.news-list time{color:var(--ink-2);font-size:.9rem;font-variant-numeric:tabular-nums}
.badge{font-size:.72rem;font-weight:700;padding:3px 12px;border-radius:999px;text-align:center;background:rgba(108,92,231,.12);color:var(--c1)}
.badge.alt{background:rgba(255,95,162,.14);color:#d62a76}
.news-list summary::after{content:"+";font-size:1.4rem;font-weight:300;transition:.3s;justify-self:end}
.news-list details[open] summary::after{transform:rotate(45deg)}
.news-list .body{padding:0 6px 28px 226px;color:var(--ink-2);font-size:.95rem}
.news-list .body p+p{margin-top:.8em}

/* recruit */
.recruit-box{margin-top:48px;border-radius:32px;padding:clamp(28px,5vw,60px);background:linear-gradient(135deg,#1b1740,#0c0c16);color:#fff;position:relative;overflow:hidden}
.recruit-box::after{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:var(--c1);filter:blur(100px);opacity:.45;right:-120px;top:-120px}
.recruit-box>*{position:relative;z-index:1}
.recruit-cols{display:grid;grid-template-columns:1fr 1fr;gap:36px 56px;margin-top:6px}
.recruit-cols h4{font-size:.8rem;letter-spacing:.2em;color:var(--c4);margin-bottom:8px}
.recruit-cols p,.recruit-cols li{color:rgba(255,255,255,.85);font-size:.95rem}
.recruit-cols li::before{content:"・"}
.roles{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 34px}
.roles b{padding:10px 22px;border-radius:999px;background:#fff;color:var(--ink);font-size:.95rem}

/* contact */
.contact{background:#f1f0fb}
.form{margin-top:48px;background:var(--card);border:1px solid var(--line);border-radius:32px;padding:clamp(24px,4.5vw,56px);display:grid;gap:22px;max-width:760px}
.field label{display:block;font-weight:700;font-size:.88rem;margin-bottom:8px}
.field label em{font-style:normal;color:var(--c3);margin-left:6px;font-size:.75rem}
.field input,.field textarea{width:100%;padding:16px 18px;border:1.5px solid var(--line);border-radius:16px;font:inherit;background:var(--bg);transition:.2s}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--c1);box-shadow:0 0 0 4px rgba(108,92,231,.15);background:#fff}
.field textarea{min-height:170px;resize:vertical}
.agree{display:flex;gap:10px;align-items:center;font-size:.9rem}
.agree a{color:var(--c1);border-bottom:1px solid}
.note{font-size:.82rem;color:var(--ink-2)}

/* footer */
footer.site{background:var(--dark);color:rgba(255,255,255,.7);padding:60px 0 34px}
.foot{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
footer .logo{color:#fff}
footer ul{display:flex;gap:22px;flex-wrap:wrap;font-size:.88rem}
footer ul a:hover{color:#fff}
footer small{display:block;margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:.78rem}
.totop{position:fixed;right:18px;bottom:18px;width:48px;height:48px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;opacity:0;pointer-events:none;transition:.3s;z-index:40;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.totop.show{opacity:1;pointer-events:auto}
.totop:hover{background:var(--c1)}

/* legal pages */
.legal{padding:140px 0 90px}
.legal h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:34px}
.legal h2{font-size:1.2rem;margin:2.2em 0 .6em;padding-left:14px;border-left:4px solid var(--c1)}
.legal h3{font-size:1rem;margin:1.2em 0 .3em}
.legal p,.legal li{color:#33333f;font-size:.96rem}
.legal ul,.legal ol{margin:.5em 0 .5em 1.4em}
.legal ul{list-style:disc}.legal ol{list-style:decimal}
.legal .meta{color:var(--ink-2);font-size:.85rem;margin-top:3em}

/* reveal */
.rv{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}

@media (max-width:900px){
  .burger{display:block}
  nav.gnav{position:fixed;inset:68px 0 auto 0;background:rgba(250,250,247,.97);backdrop-filter:blur(16px);padding:14px 20px 26px;transform:translateY(-130%);transition:.4s;border-bottom:1px solid var(--line)}
  nav.gnav.open{transform:none}
  nav.gnav ul{flex-direction:column;align-items:stretch;gap:0}
  nav.gnav a{display:block;padding:15px 8px;border-radius:0;border-bottom:1px solid var(--line);font-size:1rem}
  nav.gnav a.cta{margin-top:14px;text-align:center;border-radius:999px;border:0}
  .mvv,.company-grid,.msg-grid,.recruit-cols{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bento .tile,.bento .tile:nth-child(n){grid-column:auto;min-height:300px}
  .news-list summary{grid-template-columns:1fr 24px;gap:6px 12px}
  .news-list summary time{grid-column:1}.news-list summary .badge{display:none}
  .news-list summary span.t{grid-column:1;grid-row:2}
  .news-list summary::after{grid-column:2;grid-row:1/3}
  .news-list .body{padding-left:6px}
  dl.facts div{grid-template-columns:1fr;gap:4px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}.hero h1 .line span{transform:none}
}