:root{
  --ai:#13233F;      /* 藍 */
  --ai-deep:#0C1830;
  --mist:#F3F6F8;
  --yamabuki:#E8A317;
  --sumi:#1E2430;
  --nibi:#6B7684;
  --line:#DCE2E8;
  --mincho:"Zen Old Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --gothic:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--gothic);color:var(--sumi);background:#fff;font-size:16px;line-height:1.95;letter-spacing:.03em;-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--yamabuki);outline-offset:3px}
.wrap{max-width:1080px;margin:0 auto;padding:0 32px}
.measure{max-width:38em}

/* header */
.site-header{position:absolute;inset:0 0 auto 0;z-index:10}
.site-header.solid{position:relative;background:var(--ai)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:84px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand svg{width:34px;height:34px}
.brand b{font-family:var(--mincho);font-size:19px;font-weight:700;letter-spacing:.08em}
.brand small{display:block;font-size:11px;letter-spacing:.14em;opacity:.65;font-weight:400;line-height:1.3}
.gnav a{color:#fff;text-decoration:none;font-size:14px;margin-left:28px;opacity:.85}
.gnav a:hover{opacity:1;text-decoration:underline;text-underline-offset:6px;text-decoration-color:var(--yamabuki)}

/* hero */
.hero{background:var(--ai);color:#fff;position:relative;overflow:hidden;min-height:640px;display:flex;align-items:center}
.hero .wrap{position:relative;width:100%;padding-top:120px;padding-bottom:110px}
.hero h1{font-family:var(--mincho);font-weight:700;font-size:clamp(36px,5.6vw,68px);line-height:1.45;letter-spacing:.06em;position:relative;z-index:2}
.hero h1 span{display:block}
.hero .lead{margin-top:36px;max-width:30em;color:rgba(255,255,255,.78);font-size:16px;position:relative;z-index:2}
.enso{position:absolute;right:-60px;top:50%;width:min(560px,62vw);transform:translateY(-50%);z-index:1;pointer-events:none}
.enso path{fill:none;stroke:var(--yamabuki);stroke-width:22;stroke-linecap:round;stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2.4s cubic-bezier(.6,.1,.3,1) .3s forwards;opacity:.92}
@keyframes draw{to{stroke-dashoffset:90}}
@media (prefers-reduced-motion:reduce){.enso path{animation:none;stroke-dashoffset:90}}

/* sections */
.sec{padding:120px 0}
.sec.mist{background:var(--mist)}
.sec-head{display:grid;grid-template-columns:280px 1fr;gap:48px;margin-bottom:64px;align-items:end}
.sec-head h2{font-family:var(--mincho);font-size:34px;line-height:1.4;letter-spacing:.08em;font-weight:700}
.sec-head p{color:var(--nibi);max-width:34em}

/* philosophy */
.philosophy{display:grid;grid-template-columns:280px 1fr;gap:48px}
.ph-title{font-family:var(--mincho);font-size:34px;line-height:1.4;letter-spacing:.08em;font-weight:700}
.philosophy blockquote{font-family:var(--mincho);font-size:clamp(22px,2.6vw,30px);line-height:1.8;letter-spacing:.06em;color:var(--ai);border-left:4px solid var(--yamabuki);padding-left:32px}
.philosophy .body{margin-top:32px;padding-left:36px;color:#3a4250}
.philosophy .body p+p{margin-top:1em}

/* business rows */
.biz{border-top:1px solid var(--line)}
.biz-row{display:grid;grid-template-columns:280px 1fr;gap:48px;padding:40px 0;border-bottom:1px solid var(--line)}
.biz-row h3{font-family:var(--mincho);font-size:22px;letter-spacing:.06em;line-height:1.5;color:var(--ai)}
.biz-row p{color:#3a4250;max-width:36em}

/* process (real sequence) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s;background:#fff;border:1px solid var(--line)}
.step{padding:36px 28px;border-right:1px solid var(--line);position:relative}
.step:last-child{border-right:0}
.step::before{counter-increment:s;content:counter(s);font-family:var(--mincho);font-size:44px;color:var(--yamabuki);line-height:1;display:block;margin-bottom:20px}
.step h3{font-size:17px;margin-bottom:8px;color:var(--ai)}
.step p{font-size:14px;color:#4a5260;line-height:1.85}

/* company */
.info{width:100%;border-collapse:collapse;font-size:15px}
.info th,.info td{padding:22px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.info tr:first-child th,.info tr:first-child td{border-top:1px solid var(--ai)}
.info th{width:220px;font-weight:700;color:var(--ai);padding-right:24px}
.info a{color:var(--ai);text-underline-offset:4px}

/* contact */
.contact{background:var(--ai-deep);color:#fff;padding:110px 0}
.contact .inner{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.contact h2{font-family:var(--mincho);font-size:clamp(26px,3.4vw,40px);line-height:1.55;letter-spacing:.06em}
.contact p{margin-top:16px;color:rgba(255,255,255,.72);font-size:15px}
.btn{display:inline-block;background:var(--yamabuki);color:var(--ai-deep);font-weight:700;text-decoration:none;padding:20px 40px;border-radius:999px;font-size:16px;letter-spacing:.06em;transition:background .2s}
.btn:hover{background:#F2B637}
.contact .mail{display:block;margin-top:14px;font-size:14px;color:rgba(255,255,255,.7);text-align:center}

/* footer */
.site-footer{background:#08111F;color:rgba(255,255,255,.6);padding:48px 0;font-size:13px}
.site-footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
.site-footer a{text-decoration:none;margin-right:24px}
.site-footer a:hover{color:#fff}

/* sub pages */
.page-hero{background:var(--ai);color:#fff;padding:72px 0 80px}
.page-hero h1{font-family:var(--mincho);font-size:clamp(28px,4vw,42px);letter-spacing:.08em}
.page-hero p{margin-top:12px;color:rgba(255,255,255,.7);font-size:14px}
.doc{padding:96px 0 120px}
.doc .wrap{max-width:820px}
.doc > .wrap > p{color:#3a4250}
.doc h2{font-family:var(--mincho);font-size:21px;color:var(--ai);margin:56px 0 14px;letter-spacing:.06em;display:flex;gap:14px;align-items:baseline}
.doc h2 em{font-style:normal;color:var(--yamabuki);font-size:24px}
.doc p,.doc li{font-size:15px;color:#3a4250}
.doc ol,.doc ul{padding-left:1.4em;margin-top:8px}
.doc li+li{margin-top:4px}
.doc .info{margin-top:16px}
.dates{margin-top:56px;font-size:13px;color:var(--nibi)}

@media(max-width:860px){
  .sec{padding:88px 0}
  .sec-head,.philosophy,.biz-row{grid-template-columns:1fr;gap:16px}
  .philosophy .body{padding-left:0}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2){border-right:0}
  .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .contact .inner{grid-template-columns:1fr}
  .contact .mail{text-align:left}
}
@media(max-width:600px){
  .wrap{padding:0 22px}
  .site-header .wrap{height:auto;padding-top:20px;padding-bottom:20px;flex-direction:column;align-items:flex-start;gap:12px}
  .gnav a{margin:0 18px 0 0;font-size:13px}
  .hero{min-height:560px}
  .hero .wrap{padding-top:150px;padding-bottom:80px}
  .enso{right:-120px;width:420px;opacity:.55}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .info th{width:110px}
}