:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #18212b;
  --muted: #617080;
  --line: #dfe4e9;
  --accent: #243447;
  --accent-2: #40566d;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--surface);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.narrow { max-width: 820px; }
.center { text-align: center; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.global-nav { display: flex; gap: 28px; align-items: center; }
.global-nav a { text-decoration: none; font-size: .92rem; font-weight: 600; color: #344454; }
.global-nav a:hover { color: #000; }
.menu-button { display: none; border: 1px solid var(--line); background: #fff; padding: 9px 12px; font: inherit; font-weight: 700; }

.hero {
  min-height: 620px;
  display: grid;
  align-items: center;
  background:
    linear-gradient(120deg, rgba(255,255,255,.96), rgba(245,248,251,.88)),
    radial-gradient(circle at 80% 30%, #dfe7ee, transparent 35%);
  border-bottom: 1px solid var(--line);
}
.hero-inner { padding-block: 110px 100px; }
.eyebrow, .section-label { margin: 0 0 16px; color: var(--accent-2); font-size: .78rem; font-weight: 800; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(2.6rem, 6vw, 5.6rem); line-height: 1.12; letter-spacing: -.04em; font-weight: 750; }
.hero-copy { max-width: 690px; margin: 30px 0 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.17rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-block; min-width: 160px; padding: 13px 20px; border: 1px solid var(--accent); text-align: center; text-decoration: none; font-weight: 700; }
.button.primary { background: var(--accent); color: #fff; }
.button.secondary { background: transparent; color: var(--accent); }
.button:hover { opacity: .86; }

.section { padding-block: 100px; }
.section-alt { background: var(--bg); }
.section h2 { margin: 0 0 28px; font-size: clamp(1.9rem, 3.4vw, 3rem); line-height: 1.35; letter-spacing: -.025em; }
.section p { color: var(--muted); }

.business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.business-card { min-height: 330px; padding: 32px; background: var(--surface); border: 1px solid var(--line); }
.business-no { display: inline-block; margin-bottom: 48px; color: #8795a3; font-weight: 800; letter-spacing: .12em; }
.business-card h3 { margin: 0 0 10px; font-size: 1.28rem; }
.business-card p { margin: 10px 0 0; }
.business-subtitle { color: var(--accent) !important; font-weight: 700; }

.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; }
.policy-list > div { padding: 26px 0; border-top: 1px solid var(--line); }
.policy-list > div:last-child { border-bottom: 1px solid var(--line); }
.policy-list h3 { margin: 0 0 8px; font-size: 1.1rem; }
.policy-list p { margin: 0; }

.company-table-wrap { margin-top: 38px; background: var(--surface); border: 1px solid var(--line); }
.company-table { margin: 0; }
.company-table > div { display: grid; grid-template-columns: 220px 1fr; border-bottom: 1px solid var(--line); }
.company-table > div:last-child { border-bottom: 0; }
.company-table dt, .company-table dd { margin: 0; padding: 22px 26px; }
.company-table dt { font-weight: 700; background: #f3f5f7; }
.company-table dd { color: #435160; }

.contact-section { padding-block: 110px; }
.contact-note { margin-top: 20px; padding: 16px 18px; background: var(--bg); border: 1px solid var(--line); font-size: .93rem; }

.site-footer { background: #18212b; color: #fff; padding: 44px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; align-items: end; }
.site-footer p { margin: 6px 0 0; color: #bac4cd; font-size: .88rem; }
.copyright { text-align: right; }

@media (max-width: 820px) {
  .menu-button { display: block; }
  .global-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    padding: 18px 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }
  .global-nav.open { display: flex; }
  .business-grid { grid-template-columns: 1fr; }
  .business-card { min-height: auto; }
  .business-no { margin-bottom: 24px; }
  .split { grid-template-columns: 1fr; gap: 18px; }
  .company-table > div { grid-template-columns: 1fr; }
  .company-table dt { padding-bottom: 8px; }
  .company-table dd { padding-top: 8px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .copyright { text-align: left; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 64px; }
  .global-nav { top: 64px; }
  .hero { min-height: 560px; }
  .hero-inner { padding-block: 82px; }
  .section { padding-block: 72px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
}