:root{
  --ink:#101820;
  --muted:#667079;
  --line:#dfe3e5;
  --paper:#ffffff;
  --soft:#f4f5f5;
  --soft2:#eef0f1;
  --deep:#0e1a23;
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--paper);
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  line-height:1.75;
  letter-spacing:.02em;
}
a{color:inherit;text-decoration:none}
button{font:inherit}
.container{width:min(calc(100% - 64px),var(--max));margin:auto}

/* HEADER */
.site-header{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(16,24,32,.08);
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.brand-wrap{display:flex;align-items:center;gap:22px;min-width:320px}
.goth-logo{
  font-size:28px;
  font-weight:900;
  letter-spacing:.08em;
  line-height:1;
}
.office-name{
  font-size:16px;
  font-weight:800;
  letter-spacing:.01em;
  white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:27px;font-size:12px;font-weight:700}
.main-nav a{transition:opacity .2s}.main-nav a:hover{opacity:.55}
.nav-cta{background:var(--deep);color:#fff;padding:13px 19px}
.menu-btn{display:none;background:none;border:0;font-size:27px}

/* HERO */
.hero{
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.hero-inner{
  min-height:620px;
  padding:92px 0 82px;
  display:grid;
  grid-template-columns:minmax(0,1.65fr) minmax(320px,.75fr);
  gap:72px;
  align-items:center;
}
.hero-kicker,.section-kicker{
  font-size:10px;
  font-weight:800;
  letter-spacing:.2em;
  color:var(--muted);
}
.hero-title{
  margin:16px 0 6px;
  font-size:clamp(78px,10vw,150px);
  line-height:.86;
  letter-spacing:-.065em;
  font-weight:900;
}
.hero-en{
  font-size:clamp(25px,3vw,42px);
  line-height:1.2;
  font-weight:900;
  letter-spacing:.03em;
}
.hero-jp{
  margin-top:12px;
  font-size:clamp(24px,2.7vw,40px);
  line-height:1.45;
  font-weight:900;
  letter-spacing:-.02em;
}
.hero-desc{
  margin-top:27px;
  max-width:620px;
  font-size:15px;
  font-weight:600;
}
.hero-meta{
  margin-top:34px;
  font-size:12px;
  line-height:1.7;
  font-weight:700;
}
.hero-actions{margin-top:26px}
.btn-dark{
  display:inline-flex;align-items:center;gap:28px;
  padding:15px 22px;
  background:var(--deep);color:#fff;
  font-size:12px;font-weight:800;
}
.hero-question{
  border-left:1px solid var(--ink);
  padding-left:40px;
}
.hero-question h2{
  margin:0 0 24px;
  font-size:clamp(30px,3.2vw,48px);
  line-height:1.3;
  letter-spacing:-.03em;
}
.hero-question p{font-size:14px;color:#33404a;margin:0 0 18px}
.text-link{
  display:inline-flex;align-items:center;gap:20px;
  margin-top:8px;font-size:12px;font-weight:800;
}
.text-link b{font-size:20px;font-weight:500}

/* COMMON SECTIONS */
.section{padding:92px 0;border-bottom:1px solid var(--line)}
.section.white{background:#fff}
.section.soft{background:var(--soft)}
.section.soft2{background:var(--soft2)}
.section-head{
  display:flex;align-items:end;justify-content:space-between;gap:30px;
  margin-bottom:42px;
}
.section-title{
  margin:7px 0 0;
  font-size:clamp(34px,4.2vw,58px);
  line-height:1.2;
  letter-spacing:-.035em;
}
.section-note{font-size:11px;color:var(--muted);font-weight:700}

/* WHY GOTH */
.reason-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:12px;
}
.reason-card{
  min-height:235px;
  padding:28px 24px;
  background:#fff;
  border:1px solid var(--line);
}
.reason-no{
  font-size:12px;
  color:#899198;
  font-weight:800;
  letter-spacing:.12em;
}
.reason-card h3{
  margin:28px 0 14px;
  font-size:19px;
  line-height:1.4;
}
.reason-card p{
  margin:0;
  color:#56616a;
  font-size:13px;
  line-height:1.8;
}

/* TARGET CARDS */
.target-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.target-card{
  background:#fff;
  border:1px solid var(--line);
  padding:44px 44px 38px;
}
.target-card .section-kicker{margin-bottom:16px}
.target-card h3{
  margin:0;
  font-size:clamp(28px,3vw,42px);
  line-height:1.4;
  letter-spacing:-.025em;
}
.target-card p{margin:22px 0 0;color:#56616a;font-size:14px;max-width:560px}

/* SERVICES */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.service-item{
  min-height:200px;
  padding:29px 26px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:#fff;
}
.service-icon{font-size:26px;line-height:1}
.service-item h3{font-size:17px;margin:22px 0 9px}
.service-item p{font-size:13px;color:#59636a;margin:0}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:80px;align-items:start}
.about-big{
  margin:0;
  font-size:clamp(36px,5vw,68px);
  line-height:1.28;
  letter-spacing:-.04em;
}
.about-copy p{margin:0 0 18px;color:#44515a;font-size:15px}
.about-copy strong{color:var(--ink)}

/* CONTACT */
.contact{background:var(--deep);color:#fff}
.contact .section-kicker{color:#b7c0c6}
.contact-grid{display:grid;grid-template-columns:1.5fr .5fr;gap:70px;align-items:end}
.contact h2{
  margin:8px 0 14px;
  font-size:clamp(34px,4.6vw,60px);
  line-height:1.25;
  letter-spacing:-.035em;
}
.contact p{color:#d5dadd;font-size:14px;max-width:690px}
.contact .btn-dark{border:1px solid #fff;background:transparent;justify-content:center}

/* FOOTER */
.footer{
  padding:28px 0;
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.footer-brand{font-size:18px;font-weight:900}
.footer-sub{font-size:10px;color:var(--muted);margin-top:5px}
.footer-links{display:flex;gap:22px;font-size:11px;font-weight:700}

/* SUBPAGES */
.page-hero{padding:150px 0 90px;background:var(--soft);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(48px,7vw,100px);line-height:1.06;letter-spacing:-.055em;margin:14px 0 20px}
.page-hero p{max-width:800px;font-size:18px;font-weight:650}
.simple-list{border-top:1px solid var(--line)}
.simple-list div{display:grid;grid-template-columns:180px 1fr;gap:28px;padding:26px 0;border-bottom:1px solid var(--line)}
.simple-list strong{font-size:12px;letter-spacing:.1em}
.simple-list span{font-size:14px;color:#48545d}

/* MOBILE */
@media(max-width:980px){
  .main-nav{display:none}
  .menu-btn{display:block}
  .brand-wrap{min-width:0}
  .office-name{font-size:14px}
  .hero-inner{grid-template-columns:1fr;gap:50px}
  .hero-question{border-left:0;border-top:1px solid var(--ink);padding:34px 0 0}
  .reason-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .container{width:min(calc(100% - 32px),var(--max))}
  .header-inner{min-height:66px}
  .goth-logo{font-size:23px}
  .office-name{font-size:12px}
  .hero-inner{min-height:auto;padding:80px 0 64px}
  .hero-title{font-size:22vw}
  .hero-en{font-size:22px}
  .hero-jp{font-size:26px}
  .hero-desc{font-size:13px}
  .section{padding:68px 0}
  .section-head{display:block}
  .section-title{font-size:38px}
  .section-note{margin-top:12px}
  .reason-grid{grid-template-columns:1fr}
  .reason-card{min-height:auto}
  .target-grid{grid-template-columns:1fr}
  .target-card{padding:32px 26px}
  .target-card h3{font-size:28px}
  .service-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr;gap:34px}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-inner{align-items:flex-start;flex-direction:column}
  .footer-links{flex-wrap:wrap}
  .simple-list div{grid-template-columns:1fr;gap:8px}
}