:root{
  --bg:#f6f4ef;
  --white:#ffffff;
  --text:#1f2328;
  --muted:#5f6670;
  --line:#e5dfd4;
  --navy:#182433;
  --navy-deep:#111a25;
  --beige:#b79d78;
  --beige-soft:#efe8dd;
  --shadow:0 18px 40px rgba(17,26,37,.08);
  --radius:22px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic","Meiryo",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.8;
  letter-spacing:.02em;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{width:min(100% - 32px,var(--max));margin:0 auto}
.section{padding:96px 0}
.eyebrow{display:inline-block;margin-bottom:14px;color:var(--beige);font-weight:800;font-size:.82rem;letter-spacing:.14em}
.section-title{margin:0 0 14px;color:var(--navy);font-size:clamp(1.9rem,2.8vw,2.6rem);line-height:1.28;letter-spacing:.04em}
.section-text{margin:0;max-width:760px;color:var(--muted);font-size:1rem}
.btn-wrap{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 22px;border-radius:999px;font-weight:800;transition:.25s ease;border:1px solid transparent;font-size:15px}
.btn-primary{background:var(--navy);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--navy-deep);transform:translateY(-1px)}
.btn-secondary{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.3)}
.btn-secondary:hover{background:rgba(255,255,255,.16)}
.btn-light{background:#fff;color:var(--navy);box-shadow:var(--shadow)}
.btn-light:hover{background:#f3efe7;transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--navy);border-color:var(--line)}
.btn-outline:hover{background:#fff}

.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(16,24,35,.28);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08)}
.site-header.light{background:rgba(246,244,239,.92);border-bottom:1px solid rgba(229,223,212,.9)}
.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{color:#fff;font-weight:900;font-size:1.06rem;letter-spacing:.1em}
.light .logo{color:var(--navy)}
.logo small{display:block;font-size:.68rem;font-weight:700;opacity:.8;letter-spacing:.08em}
.logo img{
  display:block;
  height:70px;
  width:auto;
}
.nav{display:flex;gap:24px;align-items:center;color:rgba(255,255,255,.88);font-size:.95rem}
.light .nav{color:var(--muted)}
.nav a:hover{color:#fff}
.light .nav a:hover{color:var(--navy)}
.mobile-nav{display:none;gap:8px;align-items:center}
.mobile-link{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 12px;border-radius:999px;font-size:.82rem;font-weight:800;background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18)}
.light .mobile-link{background:#fff;color:var(--navy);border-color:var(--line)}
.header-cta{display:flex}

.hero{
  min-height:100svh;position:relative;display:flex;align-items:flex-end;color:#fff;
  background:
    linear-gradient(90deg, rgba(16,24,35,.72) 0%, rgba(16,24,35,.50) 42%, rgba(16,24,35,.24) 100%),
    url("images/hero.jpg") center/cover no-repeat;
}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(10,15,22,.10) 0%, rgba(10,15,22,.18) 100%)}
.hero-inner{position:relative;z-index:1;width:min(100% - 32px,var(--max));margin:0 auto;padding:140px 0 72px}
.hero-copy{max-width:760px}
.hero-kicker{display:inline-block;margin-bottom:16px;font-size:.86rem;letter-spacing:.16em;font-weight:800;color:#d8c0a0}
.hero-title{margin:0 0 20px;font-size:clamp(2.5rem,6vw,5.4rem);line-height:1.12;letter-spacing:.06em}
.hero-text{margin:0 0 32px;max-width:32em;color:rgba(255,255,255,.88);font-size:1.06rem}
.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:1;color:rgba(255,255,255,.78);font-size:.84rem;letter-spacing:.12em;font-weight:700}

.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.intro-card{padding:36px}
.intro-photo{min-height:420px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:url("images/intro.jpg") center/cover no-repeat}
.pill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.pill{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 18px;text-align:center;font-weight:800;color:var(--navy)}
.service-card,.value-card,.work-card,.faq-item,.info-card,.contact-card,.case-card{background:#fff;border-radius:20px;box-shadow:var(--shadow)}
.service-card,.value-card,.info-card,.contact-card{padding:28px}
.service-no,.value-no{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--beige-soft);color:var(--beige);font-weight:900;margin-bottom:18px}
.service-card h3,.value-card h3,.info-card h3,.contact-card h3{margin:0 0 10px;color:var(--navy);font-size:1.18rem}
.service-card p,.value-card p,.info-card p,.contact-card p{margin:0;color:var(--muted)}
.work-card,.case-card{overflow:hidden}
.work-thumb,.case-thumb{aspect-ratio:16/10;background-size:cover;background-position:center}
.thumb-1{background-image:url("images/work1.jpg")}
.thumb-2{background-image:url("images/work2.jpg")}
.thumb-3{background-image:url("images/work3.jpg")}
.work-body,.case-body{padding:24px}
.work-meta,.case-meta{display:inline-block;margin-bottom:8px;color:var(--beige);font-size:.82rem;font-weight:900}
.work-title,.case-title{margin:0 0 10px;color:var(--navy);font-size:1.16rem}
.work-body p,.case-body p{margin:0;color:var(--muted)}
.flow-wrap{padding:34px}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px}
.flow-step{background:#faf7f1;border:1px solid var(--line);border-radius:18px;padding:18px 16px;min-height:152px}
.flow-step span{display:inline-block;margin-bottom:8px;color:var(--beige);font-size:.78rem;font-weight:900;letter-spacing:.08em}
.flow-step h3{margin:0 0 8px;color:var(--navy);font-size:1rem}
.flow-step p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.7}
.cta{background:linear-gradient(135deg,var(--navy) 0%, #223246 100%);color:#fff;border-radius:28px;padding:38px;box-shadow:var(--shadow)}
.cta h2{margin:0 0 12px;font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.28}
.cta p{margin:0;color:rgba(255,255,255,.82);max-width:42em}
.cta-row{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.faq-list{display:grid;gap:14px}
.faq-item{padding:24px}
.faq-q{margin-bottom:8px;color:var(--navy);font-weight:900}
.faq-a{color:var(--muted)}
.page-hero{padding:148px 0 78px;background:linear-gradient(180deg,#f0ebe2 0%,#f6f4ef 100%)}
.page-hero h1{margin:0 0 12px;color:var(--navy);font-size:clamp(2.2rem,4vw,3.8rem);line-height:1.2;letter-spacing:.05em}
.page-hero p{margin:0;max-width:760px;color:var(--muted)}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.info-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px}
.list-clean{display:grid;gap:10px;color:var(--muted)}
.kv-list{display:grid;gap:12px}
.kv-item{display:grid;grid-template-columns:160px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.kv-item strong{color:var(--navy)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.form-grid{display:grid;gap:14px}
label{font-weight:800;color:var(--navy);font-size:.95rem}
input,textarea,select{width:100%;margin-top:6px;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:#fff;font:inherit;color:var(--text)}
textarea{min-height:160px;resize:vertical}
.site-footer{padding:40px 0 60px}
.footer-box{background:#fff;border-radius:22px;padding:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:24px}
.footer-title{margin-bottom:10px;color:var(--navy);font-weight:900}
.footer-list{display:grid;gap:8px;color:var(--muted);font-size:.95rem}
.copy{margin-top:16px;text-align:center;color:var(--muted);font-size:.85rem}

@media (max-width:1080px){
  .nav{display:none}
  .mobile-nav{display:flex}
  .grid-2,.grid-3,.pill-grid,.flow-grid,.case-grid,.info-grid,.contact-grid,.footer-box,.cta-row{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .container{width:min(100% - 24px,var(--max))}
  .hero{
    min-height:100svh;
    background:
      linear-gradient(180deg, rgba(16,24,35,.54) 0%, rgba(16,24,35,.50) 52%, rgba(16,24,35,.58) 100%),
      url("images/hero.jpg") center/cover no-repeat;
  }
  .hero-inner{padding:118px 0 64px;display:flex;align-items:flex-end;min-height:100svh}
  .hero-copy{width:100%;max-width:none}
  .hero-kicker{font-size:.74rem;margin-bottom:12px}
  .hero-title{font-size:2.25rem;line-height:1.14;margin-bottom:16px}
  .hero-text{font-size:.98rem;line-height:1.7;max-width:22em;margin-bottom:22px}
  .hero-scroll{display:none}
  .btn-wrap{width:100%;flex-direction:column}
  .btn{width:100%;min-height:52px;font-size:15px}
  .intro-card,.service-card,.value-card,.info-card,.contact-card,.flow-wrap,.cta,.faq-item,.work-body,.case-body{padding:22px}
  .intro-photo{min-height:280px}
  .section-title{font-size:1.85rem}
  .section-text{font-size:.98rem;line-height:1.8}
  .header-inner{min-height:66px;gap:10px}
  .logo{font-size:.96rem}
  .logo small{font-size:.62rem}
  .logo img{height:45px;}
  .header-cta{display:none}
  .mobile-link{min-height:38px;padding:0 10px;font-size:.78rem}
  .pill{padding:16px 14px;font-size:.94rem}
  .flow-grid{gap:12px}
  .flow-step{min-height:auto}
  .page-hero{padding:110px 0 56px}
  .page-hero h1{font-size:2.1rem}
  .kv-item{grid-template-columns:1fr;gap:6px;padding:12px 0}
  input,textarea,select{font-size:16px}
  .site-footer{padding:28px 0 44px}
}
@media (max-width:420px){
  .hero-title{font-size:2rem}
  .section-title{font-size:1.7rem}
  .mobile-nav{gap:6px}
  .mobile-link{padding:0 8px;font-size:.74rem}
}