:root{
  --navy:#061a31;
  --navy-2:#0c294c;
  --gold:#c9a45e;
  --gold-2:#e2c98f;
  --ink:#162338;
  --muted:#667085;
  --line:#e2e7ed;
  --soft:#f6f8fb;
  --white:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:#fff;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Yu Gothic","YuGothic","Noto Sans JP",sans-serif;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
body.menu-open{overflow:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:min(1180px,calc(100% - 42px));margin-inline:auto}
.eyebrow{font-size:11px;font-weight:900;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.show{opacity:1;transform:none}

/* Header */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:50;
  color:#fff;
  transition:.3s ease;
}
.site-header.scrolled{
  background:rgba(5,18,37,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.16);
  backdrop-filter:blur(14px);
}
.header-inner{height:82px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:46px;height:46px;position:relative;display:grid;place-items:center;
  border:1px solid rgba(201,164,94,.7);border-radius:50%;
  font:600 19px/1 Georgia,serif;color:var(--gold);
}
.brand-mark::after{
  content:"";position:absolute;width:30px;height:1px;background:var(--gold);transform:rotate(-36deg)
}
.brand-copy strong{display:block;font:600 18px/1 Georgia,serif;letter-spacing:.13em}
.brand-copy small{display:block;margin-top:7px;font-size:8px;letter-spacing:.18em;color:rgba(255,255,255,.65)}
.nav{display:flex;align-items:center;gap:28px;font-size:12px;font-weight:800}
.nav a{position:relative}
.nav a:not(.nav-cta)::after{
  content:"";position:absolute;left:0;bottom:-8px;width:0;height:1px;background:var(--gold);transition:.25s
}
.nav a:hover::after{width:100%}
.nav-cta{padding:13px 18px;background:linear-gradient(135deg,var(--gold),#b68b3f);border-radius:4px}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:25px}

/* Hero */
.hero{
  min-height:720px;color:#fff;display:grid;align-items:center;
  background:
    linear-gradient(90deg,rgba(5,20,40,.98) 0%,rgba(5,20,40,.91) 44%,rgba(5,20,40,.2) 78%,rgba(5,20,40,.12) 100%),
    url("hero-laptop.jpg") center/cover no-repeat;
}
.hero-inner{padding-top:110px;padding-bottom:70px}
.hero-copy{max-width:720px}
.hero h1{
  margin:20px 0 24px;
  font-family:Georgia,"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:clamp(46px,6.3vw,78px);
  line-height:1.24;
  letter-spacing:-.035em;
  font-weight:500;
}
.hero h1 em{font-style:normal;color:var(--gold-2)}
.hero-lead{font-size:16px;max-width:620px;color:rgba(255,255,255,.82)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:56px;padding:0 28px;border-radius:4px;
  font-size:14px;font-weight:900;transition:.25s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn-gold{background:linear-gradient(135deg,var(--gold),#b98d40);color:#fff;box-shadow:0 12px 28px rgba(201,164,94,.22)}
.btn-outline{border:1px solid rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.02)}
.hero-stats{display:flex;gap:50px;flex-wrap:wrap;margin-top:42px}
.stat{padding-left:16px;border-left:1px solid rgba(255,255,255,.25)}
.stat strong{display:block;font:600 24px/1 Georgia,serif;color:#fff}
.stat span{display:block;margin-top:8px;font-size:11px;color:rgba(255,255,255,.62)}

/* Sections */
section{padding:98px 0}
.section-head{text-align:center;max-width:800px;margin:0 auto 52px}
.section-head h2{
  margin:10px 0 14px;
  font-family:Georgia,"Yu Mincho","Hiragino Mincho ProN",serif;
  font-weight:500;
  font-size:clamp(34px,4.5vw,54px);
  line-height:1.34;color:var(--navy);
}
.section-head p{margin:0;color:var(--muted)}

/* Analysis diagram */
.analysis{background:#fff}
.analysis-flow{
  display:grid;grid-template-columns:1fr 54px 1fr 74px 1.1fr 74px 1fr;
  align-items:center;
}
.analysis-card{
  min-height:255px;padding:28px 24px;border:1px solid var(--line);border-radius:16px;
  background:#fff;box-shadow:0 16px 45px rgba(14,35,60,.06)
}
.analysis-no{font:600 18px Georgia,serif;color:var(--gold)}
.analysis-icon{
  width:56px;height:56px;border-radius:14px;margin:18px 0;
  background:#edf2f8;color:var(--navy);
  display:grid;place-items:center;font-size:26px;font-weight:900
}
.analysis-card h3{font-size:18px;color:var(--navy);margin:0 0 8px}
.analysis-card p{font-size:13px;color:var(--muted);margin:0}
.ai-core{
  min-height:300px;border-radius:50%;padding:38px;
  background:radial-gradient(circle at 35% 25%,#1b4a86 0%,#0c2c55 35%,#061a31 76%);
  color:#fff;text-align:center;display:grid;align-content:center;border:7px solid #e8edf4;
  box-shadow:0 22px 65px rgba(6,26,49,.2)
}
.ai-core .analysis-no,.ai-core h3,.ai-core p{color:#fff}
.ai-core .analysis-icon{margin:12px auto;background:rgba(255,255,255,.08);color:var(--gold-2)}
.arrow{height:2px;background:var(--gold);position:relative}
.arrow::after{
  content:"";position:absolute;right:-1px;top:50%;width:10px;height:10px;
  border-top:2px solid var(--gold);border-right:2px solid var(--gold);
  transform:translateY(-50%) rotate(45deg)
}
.analysis-note{text-align:center;margin-top:30px;font-size:12px;color:var(--muted)}

/* Work */
.works{background:linear-gradient(#f8fafc,#f4f7fa)}
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.work-card{
  background:#fff;border:1px solid var(--line);border-radius:13px;overflow:hidden;
  box-shadow:0 22px 56px rgba(7,29,56,.08);transition:.35s ease
}
.work-card:hover{transform:translateY(-7px);box-shadow:0 30px 68px rgba(7,29,56,.13)}
.work-image{position:relative;overflow:hidden;background:#e7ebef}
.work-image img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:.55s ease}
.work-card:hover .work-image img{transform:scale(1.025)}
.work-label{position:absolute;left:16px;top:16px;padding:7px 11px;background:rgba(6,26,49,.88);color:#fff;font-size:10px;font-weight:900;letter-spacing:.12em}
.work-body{padding:24px 24px 26px}
.work-body h3{margin:0 0 9px;font:500 25px/1.35 Georgia,"Yu Mincho",serif;color:var(--navy)}
.work-body p{font-size:13px;color:var(--muted);margin:0}
.work-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.work-tags span{padding:5px 9px;border-radius:999px;background:#f0f3f6;color:#566271;font-size:10px;font-weight:800}

/* Reasons */
.reasons{background:#fff}
.reason-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.reason-card{
  min-height:230px;padding:28px 18px;text-align:center;
  border:1px solid var(--line);border-radius:14px;background:#fff
}
.reason-icon{
  width:58px;height:58px;margin:0 auto 18px;border-radius:17px;
  display:grid;place-items:center;background:#f2f5f9;color:var(--gold);font-size:29px
}
.reason-card h3{font-size:16px;color:var(--navy);margin:0 0 10px}
.reason-card p{font-size:12px;color:var(--muted);margin:0}

/* Flow */
.flow{background:var(--soft)}
.flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.flow-step{text-align:center;padding:20px 14px;position:relative}
.flow-step:not(:last-child)::after{
  content:"";position:absolute;right:-7px;top:43px;width:14px;height:14px;
  border-top:2px solid var(--gold);border-right:2px solid var(--gold);transform:rotate(45deg)
}
.step-no{
  width:46px;height:46px;border-radius:50%;margin:0 auto 18px;
  display:grid;place-items:center;background:var(--navy);color:#fff;font-size:12px;font-weight:900
}
.flow-step h3{font-size:16px;color:var(--navy);margin:0 0 8px}
.flow-step p{font-size:12px;color:var(--muted);margin:0}

/* Contact */
.contact{
  color:#fff;
  background:
   linear-gradient(90deg,rgba(5,20,40,.97),rgba(5,20,40,.85)),
   url("contact-desk.jpg") center/cover no-repeat;
}
.contact-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;align-items:start}
.contact h2{
  font:500 clamp(36px,4.3vw,56px)/1.35 Georgia,"Yu Mincho",serif;
  margin:12px 0 16px
}
.contact-copy p{color:rgba(255,255,255,.72)}
.contact-info{margin-top:30px;display:grid;gap:12px;font-size:13px;color:rgba(255,255,255,.75)}
.contact-form{padding:32px;border-radius:16px;background:#fff;color:var(--ink);box-shadow:0 22px 70px rgba(0,0,0,.22)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field.full{grid-column:1/-1}
.field label{display:block;margin-bottom:7px;font-size:12px;font-weight:800;color:var(--navy)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid #d8dee6;border-radius:7px;background:#fbfcfd;
  padding:13px 14px;outline:none
}
.field textarea{min-height:150px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#a9b7c7;box-shadow:0 0 0 3px rgba(6,26,49,.06)}
.consent{display:flex;gap:9px;align-items:flex-start;margin:16px 0;font-size:11px;color:var(--muted)}
.consent input{margin-top:5px}
.submit{width:100%;min-height:54px;border:0;border-radius:5px;background:linear-gradient(135deg,var(--gold),#b88a3f);color:#fff;font-weight:900;cursor:pointer}

/* Footer */
.footer{padding:34px 0;background:#041326;color:rgba(255,255,255,.64);font-size:12px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:22px}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}

/* Mobile */
.mobile-menu{
  position:fixed;inset:82px 0 auto 0;z-index:45;padding:22px;
  background:#071a31;color:#fff;display:none
}
.mobile-menu.open{display:grid;gap:18px}
@media(max-width:980px){
  .nav{display:none}.menu-toggle{display:block}
  .analysis-flow{grid-template-columns:1fr 30px 1fr}
  .analysis-flow .ai-core{grid-column:1/-1;width:min(300px,100%);justify-self:center}
  .analysis-flow .arrow:nth-of-type(2),.analysis-flow .arrow:nth-of-type(3){display:none}
  .work-grid{grid-template-columns:1fr}
  .reason-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-step::after{display:none}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:680px){
  .container{width:min(100% - 28px,1180px)}
  .brand-copy small{display:none}
  .hero{min-height:650px;background-position:68% center}
  .hero-inner{padding-top:120px}
  .hero h1{font-size:42px}
  .hero-stats{gap:24px}
  section{padding:72px 0}
  .analysis-flow,.reason-grid,.flow-grid,.form-grid{grid-template-columns:1fr}
  .analysis-flow .arrow{display:none}
  .field.full{grid-column:auto}
  .footer-inner{display:block}
  .footer-links{margin-top:16px}
}