:root{
  --paper:#f6f8fd;
  --white:#ffffff;
  --ink:#0f1c36;
  --ink-2:#4a5773;
  --ultra:#2f4bf5;
  --ultra-deep:#1a2bb0;
  --sun:#ffc53d;
  --sun-soft:#ffe28f;
  --mist:#e9effa;
  --line:#d5ddec;
  --sans:"Zen Kaku Gothic New","Hiragino Sans","Hiragino Kaku Gothic ProN",system-ui,sans-serif;
  --latin:"Bricolage Grotesque","Zen Kaku Gothic New",system-ui,sans-serif;
  --wrap:1180px;
  --pad:clamp(20px,5vw,64px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.9;-webkit-font-smoothing:antialiased;word-break:auto-phrase;line-break:strict}
p,li,dd,td{text-wrap:pretty}
h1,h2,h3{text-wrap:balance}
h1,h2,h3{font-weight:700;line-height:1.4;letter-spacing:.02em;margin:0}
p{margin:0}
a{color:inherit}
:focus-visible{outline:3px solid var(--ultra);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:16px;background:var(--ink);color:#fff;padding:8px 12px;z-index:10}
mark{background:linear-gradient(transparent 62%,var(--sun-soft) 62%);color:inherit;padding:0 .05em}
.sp{display:none}

/* ヘッダー */
.top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px var(--pad);max-width:calc(var(--wrap) + 2*var(--pad));margin:0 auto}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand img{display:block}
.wordmark{font-family:var(--latin);font-weight:800;font-size:22px;letter-spacing:.08em;line-height:1}
.top nav{display:flex;align-items:center;gap:30px;font-size:15px;font-weight:500}
.top nav a{text-decoration:none}
.top nav a:not(.nav-cta):hover{color:var(--ultra)}
.nav-cta{background:var(--ink);color:#fff;padding:9px 18px;border-radius:999px}
.nav-cta:hover{background:var(--ultra)}

/* セクション共通 */
main>section{padding:clamp(72px,10vw,128px) var(--pad);max-width:calc(var(--wrap) + 2*var(--pad));margin:0 auto}
main>section>h2,.strength-head h2,.contact-head h2{font-size:clamp(28px,3.4vw,42px)}

/* ヒーロー */
.hero{display:grid;grid-template-columns:1.02fr 1fr;align-items:center;gap:clamp(16px,3vw,48px);padding-top:clamp(28px,5vw,64px)!important;padding-bottom:clamp(32px,4vw,56px)!important}
.hero h1{font-size:clamp(38px,4.9vw,70px);font-weight:900;line-height:1.28;letter-spacing:.01em;margin-bottom:30px}
.hero h1 span{display:block;white-space:nowrap}
.lead{max-width:30em;color:var(--ink-2);font-size:clamp(16px,1.45vw,18px);margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn{display:inline-block;background:var(--ultra);color:#fff;text-decoration:none;font-weight:700;font-size:16px;padding:15px 30px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;transition:background .15s}
.btn:hover{background:var(--ultra-deep)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1.5px var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.hero-art{position:relative;aspect-ratio:560/540;max-width:620px;width:100%;justify-self:end}
.hero-art::before{content:"";position:absolute;inset:4% 8% 18% 8%;border-radius:50%;background:radial-gradient(circle at 50% 45%,#fff 0,#fff 30%,rgba(255,255,255,0) 70%);z-index:0}
.island{position:relative;z-index:1;width:100%;height:100%}
.island svg{display:block;width:100%;height:100%;overflow:visible}
.island .cube.drop{animation:drop .62s cubic-bezier(.2,.9,.25,1.15) both}
@keyframes drop{from{transform:translateY(-70px);opacity:0}60%{opacity:1}to{transform:translateY(0);opacity:1}}
.island.done .i-world{animation:float 7s ease-in-out infinite}
.i-sat{opacity:0;transition:opacity 1.2s}
.i-sat.in{opacity:1;animation:float2 9s ease-in-out infinite}
@keyframes float2{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.island.done .i-shadow{animation:shade 7s ease-in-out infinite;transform-origin:280px 520px}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
@keyframes shade{0%,100%{transform:scale(1)}50%{transform:scale(.94)}}
.island .cube.lit polygon:last-child{animation:glow 3.2s ease-in-out infinite}
@keyframes glow{0%,100%{fill:#ffe28f}50%{fill:#fff3c4}}
@media (prefers-reduced-motion:reduce){.island *{animation:none!important}}

/* ユートピアについて */
.about{padding-top:clamp(48px,6vw,80px)!important}
.about,.company{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,96px);align-items:start}
.about h2{font-size:clamp(26px,3.2vw,40px)!important}
.about-body p{max-width:34em;margin-bottom:1.3em}
.about-body p:last-child{margin-bottom:0}

/* 事業内容 */
.business{padding-top:clamp(24px,4vw,48px)!important}
.business h2{margin-bottom:44px}
.biz-tag{font-size:14px;font-weight:700;color:var(--ultra);grid-column:1/-1;margin-bottom:-6px}
.biz-group{grid-column:1/-1;font-size:15px;font-weight:700;color:var(--ink-2);margin:28px 0 -8px}
.biz{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,3vw,36px) clamp(28px,4vw,56px)}
.biz article{padding-top:26px;border-top:3px solid var(--ink)}
.biz h3{font-size:clamp(21px,2vw,25px);margin-bottom:12px}
.biz p{color:var(--ink-2)}
.biz .biz-main{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:12px clamp(32px,5vw,72px);background:var(--white);border-top:0;border-radius:20px;padding:clamp(28px,4vw,48px);box-shadow:inset 0 0 0 1px var(--line)}
.biz-main h3{grid-column:1/-1;font-size:clamp(24px,2.6vw,32px)}
.biz-main p{color:var(--ink)}
.biz-facts{margin:0;display:flex;flex-direction:column;gap:14px;align-self:start}
.biz-facts div{display:grid;grid-template-columns:7em 1fr;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.biz-facts dt{color:var(--ink-2);font-size:15px}
.biz-facts dd{margin:0;font-weight:500}
.biz-facts a{color:var(--ultra);text-underline-offset:3px}

/* できること */
.strength{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,6vw,96px);align-items:start}
.strength-head{position:sticky;top:32px}
.strength-head p{color:var(--ink-2);margin-top:18px;max-width:20em}
.caps{list-style:none;margin:0;padding:0}
.caps li{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.caps li:first-child{padding-top:4px}
.caps h3{font-size:20px;margin-bottom:6px}
.caps p{color:var(--ink-2)}
.biz p,.caps p,.about-body p{font-size:16.5px}
.cap-icon{position:relative;width:40px;height:46px;margin-top:4px;filter:drop-shadow(0 0 .6px #9fadcc)}
.ci-ultra{--c1:#6b80ff;--c2:#2f4bf5;--c3:#1d33c4}.ci-ink{--c1:#5d6b8c;--c2:#2c3a5c;--c3:#0f1c36}.ci-sky{--c1:#cfe0ff;--c2:#a8c4ff;--c3:#86a9f5}.ci-sun{--c1:#ffe28f;--c2:#ffc53d;--c3:#e6a51c}.ci-mint{--c1:#d4f3e3;--c2:#a9dec6;--c3:#86c9ad}
.mt{margin-top:28px}
.cap-icon::before,.cap-icon::after{content:"";position:absolute;inset:0}
.cap-icon::before{background:linear-gradient(90deg,var(--c2) 50%,var(--c3) 50%);clip-path:polygon(0 25%,50% 50%,100% 25%,100% 75%,50% 100%,0 75%)}
.cap-icon::after{background:var(--c1);clip-path:polygon(50% 0,100% 25%,50% 50%,0 25%)}

/* 研究開発（ここだけ青い帯） */
.rnd{max-width:none!important;background:var(--ultra);color:#fff;position:relative;overflow:hidden}
.rnd-inner{max-width:var(--wrap);margin:0 auto;position:relative}
.rnd h2{font-size:clamp(28px,3.6vw,46px)}
.rnd-lead{max-width:36em;margin-top:22px;color:#dfe5ff}
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:56px 0 0;border-top:1px solid rgba(255,255,255,.28)}
.stats div{padding:26px 24px 0 0}
.stats div+div{padding-left:24px;border-left:1px solid rgba(255,255,255,.28)}
.stats dt{font-size:15px;color:#dfe5ff}
.stats dd{margin:6px 0 0;font-size:18px;font-weight:700;color:#fff;display:flex;align-items:baseline;flex-wrap:wrap}
.stats b{font-family:var(--latin);font-weight:800;font-size:clamp(48px,6vw,76px);line-height:1;color:var(--sun);margin-right:6px;letter-spacing:-.01em}
.stats-note{font-size:13px;color:#d6ddff;margin-top:14px;text-align:right}
.themes-title{font-size:18px;margin:56px 0 14px}
.themes{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.themes li{padding:14px 0 14px 26px;border-bottom:1px solid rgba(255,255,255,.22);position:relative}
.themes li::before{content:"";position:absolute;left:0;top:24px;width:10px;height:10px;background:var(--sun);transform:rotate(45deg)}
.rnd-foot{margin-top:28px;font-size:14px;color:#e3e8ff}

/* 会社概要 */
.company table{border-collapse:collapse;width:100%}
.company th,.company td{text-align:left;vertical-align:top;padding:20px 0;border-bottom:1px solid var(--line)}
.company tr:first-child th,.company tr:first-child td{border-top:1px solid var(--line)}
.company th{width:9em;font-weight:500;color:var(--ink-2)}
.company a{color:var(--ultra);text-underline-offset:3px}
.en{color:var(--ink-2);font-family:var(--latin);font-weight:600;letter-spacing:.04em;font-size:14px}
.plain{margin:0;padding:0;list-style:none}

/* お問い合わせ */
.contact{max-width:none!important;background:var(--mist);display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,6vw,96px);padding-left:max(var(--pad),calc((100% - var(--wrap))/2))!important;padding-right:max(var(--pad),calc((100% - var(--wrap))/2))!important}
.contact-head p{color:var(--ink-2);margin-top:18px;max-width:22em}
.cform{display:flex;flex-direction:column;gap:18px}
.cf-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cform label{display:flex;flex-direction:column;gap:6px;font-size:15px;font-weight:500}
.lb{display:flex;align-items:center;gap:8px}
.req,.opt{display:inline-block;font-size:11px;font-weight:700;border-radius:4px;padding:0 6px;line-height:1.75}
.req{color:#fff;background:var(--ultra)}
.opt{color:var(--ink-2);background:#fff;box-shadow:inset 0 0 0 1px var(--line)}
.cform input,.cform select,.cform textarea{font:inherit;font-size:16px;color:var(--ink);background:#fff;border:1.5px solid #c3cde1;border-radius:10px;padding:12px 14px;width:100%}
.cform input:focus,.cform select:focus,.cform textarea:focus{outline:none;border-color:var(--ultra);box-shadow:0 0 0 3px rgba(47,75,245,.15)}
.cform textarea{resize:vertical;min-height:150px}
.cform select:invalid,.cform select.empty{color:#8a95ad}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.cf-note{font-size:13.5px;color:var(--ink-2);line-height:1.8}
.cf-note a{color:var(--ultra)}
.cf-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.cf-status{font-size:15px;font-weight:500}
.cf-status.ok{color:#137a4f}
.cf-status.ng{color:#c02a2a}
.btn[disabled]{opacity:.6;cursor:wait}

/* フッター */
.foot{background:var(--ink);color:#c2cadb;padding:52px max(var(--pad),calc((100% - var(--wrap))/2));display:flex;align-items:center;gap:20px 28px;flex-wrap:wrap}
.foot-addr{flex-basis:100%;order:3;font-size:13px;margin:0}
.foot small{order:4}
.foot .brand{color:#fff}
.foot .wordmark{font-size:19px}
.foot nav{display:flex;gap:22px;flex:1;font-size:14px}
.foot nav a{text-decoration:none}
.foot nav a:hover{color:#fff}
.foot small{font-size:13px}

/* 下層ページ */
.page{max-width:820px!important}
.page h1{font-size:clamp(30px,4vw,44px);margin-bottom:28px}
.page h2{font-size:21px!important;margin:44px 0 10px}
.page p,.page li{color:var(--ink-2)}
.page ul{padding-left:1.3em}

/* レスポンシブ */
.pc{display:inline}
@media (max-width:960px){
  .hero{grid-template-columns:1fr}
  .hero-art{order:-1;max-width:460px;justify-self:center;margin-bottom:-12px}
  .about,.strength,.contact,.company{grid-template-columns:1fr}
  .strength-head{position:static}
  .biz{grid-template-columns:1fr}
  .biz .biz-main{grid-template-columns:1fr}
}
@media (max-width:860px){
  .top nav a:not(.nav-cta){display:none}
  .pc{display:none}
}
@media (max-width:640px){
  body{font-size:16px}
  main>section{padding-top:64px;padding-bottom:64px}
  .hero-art{max-width:330px;margin-bottom:-28px}
  .hero-actions .btn{flex:1 1 auto;text-align:center;padding:14px 20px}
  .contact{padding-top:56px!important}
  .sp{display:inline}
  .hero h1{font-size:clamp(34px,10vw,46px)}
  .stats{grid-template-columns:1fr}
  .stats div,.stats div+div{padding:20px 0;border-left:0;border-bottom:1px solid rgba(255,255,255,.28)}
  .themes{grid-template-columns:1fr}
  .cf-row{grid-template-columns:1fr}
  .company th{width:6.5em}
  .biz-facts div{grid-template-columns:1fr;gap:2px}
  .wordmark{font-size:19px}
}