/*
Theme Name: Rich Corporate
Theme URI: https://example.com/
Author: Rich Co., Ltd.
Description: 株式会社Rich コーポレートサイト
Version: 1.0
*/

:root{
  --ink:#202020;
  --muted:#707070;
  --cream:#f7f5f0;
  --white:#fff;
  --accent:#9b7b57;
  --line:#e6e1d8;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic",sans-serif;color:var(--ink);background:var(--white);line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(230,225,216,.7)}
.header-inner{height:78px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:24px;letter-spacing:.16em;font-weight:700}
.logo span{display:block;font-size:9px;letter-spacing:.28em;color:var(--accent);font-weight:500;margin-top:-4px}
.nav{display:flex;gap:32px;font-size:13px;letter-spacing:.08em}
.nav a{transition:.2s}.nav a:hover{color:var(--accent)}
.menu-btn{display:none;background:none;border:0;font-size:24px}
.hero{min-height:760px;padding-top:78px;display:flex;align-items:center;background:linear-gradient(120deg,#f7f5f0 0%,#fff 55%,#f1ece4 100%);position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:540px;height:540px;border-radius:50%;right:-120px;top:110px;background:rgba(155,123,87,.08)}
.eyebrow{font-size:12px;letter-spacing:.25em;color:var(--accent);font-weight:600}
.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(48px,7vw,86px);font-weight:500;line-height:1.05;letter-spacing:.02em;margin:18px 0}
.hero h1 small{display:block;font-family:inherit;font-size:.36em;letter-spacing:.12em;margin-top:14px}
.hero p{max-width:590px;color:#555;margin:28px 0 36px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:190px;padding:15px 28px;border:1px solid var(--ink);font-size:13px;letter-spacing:.1em;transition:.25s}
.btn:hover{background:var(--ink);color:#fff}
.btn.gold{border-color:var(--accent);background:var(--accent);color:#fff}.btn.gold:hover{background:#806244}
.section{padding:110px 0}
.section.cream{background:var(--cream)}
.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:58px}
.section-head h2{font-family:Georgia,"Times New Roman",serif;font-size:48px;font-weight:500;line-height:1;margin:0}
.section-head p{max-width:560px;color:var(--muted);margin:0}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{padding:38px;background:#fff;border:1px solid var(--line);min-height:220px}
.card .num{font-size:12px;color:var(--accent);letter-spacing:.18em}
.card h3{font-size:21px;font-weight:600;margin:14px 0 10px}
.card p{color:#666;font-size:14px;margin:0}
.company{display:grid;grid-template-columns:.8fr 1.2fr;gap:90px}
.company-lead h3{font-family:Georgia,"Times New Roman",serif;font-size:40px;font-weight:500;margin:0 0 20px}
.company-lead p{color:#666}
.company-table{border-top:1px solid var(--line)}
.company-row{display:grid;grid-template-columns:150px 1fr;padding:20px 0;border-bottom:1px solid var(--line);font-size:14px}
.company-row dt{color:var(--muted)}.company-row dd{margin:0}
.contact{background:#24221f;color:#fff}
.contact .section-head p{color:#bbb}
.contact-box{display:flex;justify-content:space-between;gap:30px;align-items:center;padding:42px 0;border-top:1px solid #49453f;border-bottom:1px solid #49453f}
.contact-box h3{font-size:26px;font-weight:500;margin:0}.contact-box p{color:#aaa;margin:7px 0 0}
.footer{background:#1b1a18;color:#aaa;padding:30px 0;font-size:11px}
.footer-inner{display:flex;justify-content:space-between;gap:20px}
@media(max-width:760px){
 .container{width:min(var(--max),calc(100% - 32px))}
 .nav{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;padding:20px 16px;flex-direction:column;gap:0;border-bottom:1px solid var(--line)}
 .nav.open{display:flex}.nav a{padding:13px 0;border-bottom:1px solid #eee}.menu-btn{display:block}
 .hero{min-height:700px}.hero h1{font-size:54px}
 .section{padding:78px 0}.section-head{display:block;margin-bottom:36px}.section-head h2{font-size:40px;margin-bottom:20px}
 .grid,.company{grid-template-columns:1fr;gap:14px}.company{gap:45px}
 .company-row{grid-template-columns:105px 1fr}.card{padding:28px}
 .contact-box{display:block}.contact-box .btn{margin-top:24px}
 .footer-inner{display:block}.footer-inner div+div{margin-top:8px}
}