:root{
  --navy:#123b5d;--navy-dark:#0b1f33;--blue:#2d6f9c;--sky:#77b9dc;
  --ink:#1d2a33;--muted:#62717d;--line:#d8e0e6;--soft:#f2f6f8;
  --white:#fff;--max:1180px;--radius:12px;--shadow:0 14px 40px rgba(11,31,51,.1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans JP","Yu Gothic",system-ui,sans-serif;color:var(--ink);line-height:1.85;background:#fff}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.narrow{width:min(820px,calc(100% - 40px));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:16px;top:-60px;background:#fff;padding:10px 16px;z-index:999;border-radius:6px;box-shadow:var(--shadow)}
.skip-link:focus{top:16px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid rgba(216,224,230,.75)}
.header-inner{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{width:250px}
.global-nav ul,.footer-nav{list-style:none;margin:0;padding:0;display:flex;gap:26px}
.global-nav a{font-size:.92rem;font-weight:700;position:relative;padding:29px 0}
.global-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:19px;height:2px;background:var(--blue);transition:.25s}
.global-nav a:hover::after,.global-nav a[aria-current="page"]::after{right:0}
.menu-button{display:none;background:none;border:0;padding:8px}
.menu-button>span:not(.sr-only){display:block;width:28px;height:2px;background:var(--navy);margin:6px 0}
.hero{position:relative;min-height:720px;display:grid;align-items:center;overflow:hidden;color:#fff}
.hero-media{position:absolute;inset:0}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,31,51,.9),rgba(11,31,51,.55) 55%,rgba(11,31,51,.15))}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-content{position:relative;z-index:2;padding-block:110px}
.eyebrow{color:var(--sky);font-weight:800;letter-spacing:.18em;font-size:.78rem;margin:0 0 14px}
.hero h1,.page-hero h1{font-size:clamp(3rem,7vw,6rem);line-height:1.08;letter-spacing:.03em;margin:0}
.hero-copy{font-size:1.12rem;margin:26px 0 34px}
.button-row{display:flex;flex-wrap:wrap;gap:14px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 24px;border:2px solid var(--blue);background:var(--blue);color:#fff;font-weight:800;border-radius:7px;transition:.2s;cursor:pointer}
.button:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(18,59,93,.2)}
.button-outline{background:transparent;border-color:#fff}
.button-light{background:#fff;color:var(--navy);border-color:#fff}
.section{padding:96px 0}
.section-muted{background:var(--soft)}
.section-dark{background:var(--navy-dark);color:#fff}
.section-heading{font-size:clamp(2rem,4vw,3.3rem);line-height:1.25;margin:0 0 24px;color:var(--navy-dark)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.section-intro{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:42px}
.section-intro>p{max-width:520px}
.text-link{display:inline-block;margin-top:12px;color:var(--blue);font-weight:800;border-bottom:1px solid currentColor}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:#fff;border:1px solid var(--line);padding:34px;border-radius:var(--radius);box-shadow:0 8px 24px rgba(11,31,51,.05)}
.service-card span,.service-list article>span{font-size:2rem;font-weight:800;color:var(--sky)}
.service-card h3{font-size:1.35rem;color:var(--navy);margin:.5rem 0}
.works-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.work-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.work-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.work-card img{width:100%;aspect-ratio:800/520;object-fit:cover}
.work-card>div,.work-card a>div{padding:20px}
.work-card p{font-size:.78rem;font-weight:800;color:var(--blue);margin:0}
.work-card h2,.work-card h3{font-size:1.25rem;margin:4px 0}
.work-card span{font-size:.85rem;color:var(--muted)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;text-align:center}
.stats-grid strong{display:block;font-size:3rem;color:var(--sky);line-height:1.1}
.stats-grid span{font-size:.88rem}
.cta-panel{display:flex;justify-content:space-between;gap:40px;align-items:center;background:var(--soft);padding:48px;border-radius:var(--radius)}
.cta-panel h2{margin:.2rem 0;font-size:2rem;color:var(--navy)}
.page-hero{padding:118px 0 76px;background:linear-gradient(135deg,var(--navy-dark),var(--navy));color:#fff}
.page-hero h1{font-size:clamp(2.8rem,6vw,5rem)}
.page-hero p:last-child{margin-top:18px}
.signature{text-align:right;font-weight:800;margin-top:36px}
.company-table{margin:0;border-top:1px solid var(--line)}
.company-table>div{display:grid;grid-template-columns:240px 1fr;border-bottom:1px solid var(--line)}
.company-table dt,.company-table dd{padding:19px 20px;margin:0}
.company-table dt{font-weight:800;background:#eaf0f4;color:var(--navy)}
.note{font-size:.82rem;color:var(--muted);margin-top:22px}
.service-list{display:grid;gap:28px}
.service-list article{display:grid;grid-template-columns:100px 1fr;gap:30px;border-bottom:1px solid var(--line);padding:0 0 40px}
.service-list h2{margin:0;color:var(--navy);font-size:2rem}
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px}
.contact-info{margin-top:34px;padding:24px;border-left:4px solid var(--blue);background:var(--soft)}
.contact-info strong{display:block;font-size:1.9rem;color:var(--navy)}
.contact-info span{font-size:.85rem;color:var(--muted)}
.contact-form{display:grid;gap:22px}
.form-row{display:grid;gap:8px}
label{font-weight:800}
label b{font-size:.7rem;background:#b42318;color:#fff;padding:2px 7px;border-radius:4px;margin-left:6px}
label span{font-size:.75rem;color:var(--muted)}
input,select,textarea{width:100%;border:1px solid #aebcc7;border-radius:6px;padding:13px 14px;background:#fff}
input:focus,select:focus,textarea:focus{outline:3px solid rgba(119,185,220,.35);border-color:var(--blue)}
.check{display:flex;gap:10px;align-items:flex-start}
.check input{width:auto;margin-top:7px}
.check a{text-decoration:underline;color:var(--blue)}
.error{color:#b42318;font-size:.8rem;margin:0;min-height:1em}
.prose h2{color:var(--navy);margin-top:40px}
.site-footer{background:var(--navy-dark);color:#dbe7ef;padding:62px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:45px}
.footer-logo{filter:brightness(0) invert(1)}
.footer-nav{display:grid;gap:10px}
.footer-cta p{margin-top:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:42px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#9fb0bd}
@media (max-width:900px){
  .menu-button{display:block}
  .global-nav{position:absolute;left:0;right:0;top:82px;background:#fff;border-bottom:1px solid var(--line);display:none}
  .global-nav.open{display:block}
  .global-nav ul{display:grid;gap:0}
  .global-nav a{display:block;padding:15px 20px}
  .global-nav a::after{display:none}
  .split,.contact-grid{grid-template-columns:1fr;gap:36px}
  .card-grid,.works-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .container{width:min(100% - 28px,var(--max))}
  .brand img{width:210px}
  .hero{min-height:620px}
  .section{padding:70px 0}
  .section-intro,.cta-panel,.footer-bottom{display:block}
  .card-grid,.works-grid,.stats-grid,.footer-grid{grid-template-columns:1fr}
  .stats-grid{gap:32px}
  .company-table>div{grid-template-columns:1fr}
  .company-table dt,.company-table dd{padding:13px 15px}
  .service-list article{grid-template-columns:1fr;gap:0}
  .cta-panel{padding:30px 22px}
  .button{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important}
}

.about-visual{margin-bottom:52px}
.about-visual img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:1200/780;object-fit:cover}