:root{
  --bg:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --line:#e5e7eb;
  --soft:#f8fafc;
  --brand:#0f172a;
  --accent:#2563eb;
  --accent2:#1d4ed8;
  --radius:14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: system-ui, -apple-system, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{
  width:min(1100px, calc(100% - 32px));
  margin:0 auto;
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 0;
}
.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.brand-name{
  font-weight:800;
  letter-spacing:.02em;
}
.brand-sub{
  font-size:12px;
  color:var(--muted);
}
.nav{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
  justify-content:center;
}
.nav a{
  font-size:14px;
  color:var(--muted);
}
.nav a:hover{ color:var(--text); text-decoration:none; }

.header-cta .tel{
  font-weight:700;
  font-size:14px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  white-space:nowrap;
}
.header-cta .tel:hover{
  text-decoration:none;
  border-color:#cbd5e1;
}

/* Hero */
.hero{
  background:
    radial-gradient(900px 300px at 30% 20%, rgba(37, 99, 235, .12), transparent 60%),
    radial-gradient(900px 300px at 70% 10%, rgba(15, 23, 42, .10), transparent 60%),
    var(--soft);
  border-bottom:1px solid var(--line);
}
.hero-inner{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:24px;
  padding:42px 0;
}
.badge{
  display:inline-block;
  font-size:12px;
  color:var(--brand);
  background:#fff;
  border:1px solid var(--line);
  padding:6px 10px;
  border-radius:999px;
}
.hero h1{
  margin:14px 0 10px;
  font-size:42px;
  line-height:1.15;
  letter-spacing:-.02em;
}
.lead{
  color:var(--muted);
  margin:0 0 18px;
}

.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin:18px 0 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 16px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:700;
  font-size:14px;
  cursor:pointer;
}
.btn:hover{ text-decoration:none; border-color:#cbd5e1; }
.btn.primary{
  background:linear-gradient(135deg, var(--accent), var(--accent2));
  color:#fff;
  border-color:transparent;
  box-shadow: 0 10px 25px rgba(37, 99, 235, .25);
}
.btn.primary:hover{ filter:brightness(0.98); }
.btn.ghost{
  background:rgba(255,255,255,.7);
}

.hero-links{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
  margin-top:10px;
}
.card-link{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:14px 14px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .05);
}
.card-link:hover{ text-decoration:none; border-color:#cbd5e1; }
.card-link-title{
  font-weight:800;
  font-size:12px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.08em;
}
.card-link-desc{
  margin-top:6px;
  font-weight:700;
}

.hero-panel .panel-box{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:18px;
  box-shadow: var(--shadow);
  height:100%;
}
.panel-title{
  font-weight:800;
  margin-bottom:10px;
}
.panel-list{
  margin:0;
  padding-left:18px;
  color:var(--muted);
}
.panel-note{
  margin-top:14px;
  color:var(--muted);
  font-size:13px;
}

/* Sections */
.section{
  padding:54px 0;
}
.section.alt{
  background:var(--soft);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  margin-bottom:18px;
}
.section-head h2{
  margin:0 0 6px;
  font-size:26px;
}
.section-head p{
  margin:0;
  color:var(--muted);
}

.grid3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:16px;
}
.service{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:18px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .05);
}
.service h3{
  margin:0 0 6px;
  font-size:18px;
}
.service p{
  margin:0;
  color:var(--muted);
}

/* About */
.about-wrap{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:16px;
}
.about-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:18px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, .05);
}
.profile{
  margin:0;
}
.profile > div{
  display:grid;
  grid-template-columns: 150px 1fr;
  gap:12px;
  padding:10px 0;
  border-bottom:1px dashed #eaeef5;
}
.profile > div:last-child{ border-bottom:none; }
.profile dt{
  color:var(--muted);
  font-weight:700;
}
.profile dd{
  margin:0;
  font-weight:600;
}
.about-title{
  margin:0 0 8px;
  font-size:18px;
}
.about-text{
  margin:0 0 14px;
  color:var(--muted);
}
.mini-cta{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

/* Contact */
.contact-box{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  padding:18px;
  box-shadow: var(--shadow);
}
.contact-row{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:16px;
  margin-bottom:18px;
}
.contact-item .label{
  font-size:12px;
  color:var(--muted);
  font-weight:800;
  letter-spacing:.06em;
  text-transform:uppercase;
}
.contact-item .value{
  font-size:16px;
  font-weight:800;
  margin-top:6px;
}
.tel-big{
  font-size:22px;
  font-weight:900;
}
.hint{
  color:var(--muted);
  font-size:13px;
  margin-top:6px;
}
.form{
  margin-top:12px;
  border-top:1px solid var(--line);
  padding-top:18px;
}
.form-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
}
.field.full{ grid-column: 1 / -1; }
.field label{
  display:block;
  font-size:13px;
  font-weight:800;
  margin-bottom:6px;
}
input, textarea{
  width:100%;
  padding:12px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  font-size:14px;
  outline:none;
  background:#fff;
}
input:focus, textarea:focus{
  border-color:#93c5fd;
  box-shadow: 0 0 0 4px rgba(147, 197, 253, .35);
}
.form-note{
  color:var(--muted);
  font-size:12px;
  margin:10px 0 0;
}

/* Footer */
.site-footer{
  border-top:1px solid var(--line);
  background:#fff;
  padding:26px 0;
}
.footer-inner{
  display:flex;
  flex-direction:column;
  gap:10px;
  align-items:flex-start;
}
.footer-brand{
  font-weight:900;
}
.footer-meta{
  color:var(--muted);
  font-size:14px;
}
.footer-meta a{ color:var(--muted); }
.footer-meta a:hover{ color:var(--text); text-decoration:none; }
.dot{ margin:0 6px; color:#cbd5e1; }
.copy{
  color:var(--muted);
  font-size:12px;
}

/* Responsive */
@media (max-width: 900px){
  .hero-inner{ grid-template-columns: 1fr; }
  .hero h1{ font-size:34px; }
  .hero-links{ grid-template-columns: 1fr; }
  .grid3{ grid-template-columns: 1fr; }
  .about-wrap{ grid-template-columns: 1fr; }
  .contact-row{ grid-template-columns: 1fr; }
  .nav{ display:none; } /* まずは最低限。必要ならハンバーガー付ける */
}