:root {
  --fg: #111;
  --fg-sub: #555;
  --bg: #fff;
  --bg-alt: #f6f6f6;
  --border: #e5e5e5;
  --accent: #111;
  --max: 960px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "palt";
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { opacity: 0.7; }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.brand-logo { width: 28px; height: 28px; object-fit: contain; }
.brand-name { font-size: 16px; letter-spacing: 0.04em; }
.nav { display: flex; gap: 24px; font-size: 14px; }

/* Hero */
.hero {
  padding: 96px 0 80px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-logo {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 40px;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}
.hero-sub {
  font-size: 16px;
  color: var(--fg-sub);
  margin: 0;
}

/* Sections */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  font-size: 24px;
  letter-spacing: 0.06em;
  margin: 0 0 40px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* Business */
.business-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.business-list li {
  background: #fff;
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: 8px;
}
.business-list h3 {
  font-size: 16px;
  margin: 0 0 8px;
}
.business-list p {
  font-size: 14px;
  color: var(--fg-sub);
  margin: 0;
}

/* Company table */
.company-table {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}
.company-table > div {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--border);
  padding: 16px 8px;
}
.company-table dt {
  font-weight: 600;
  color: var(--fg);
  font-size: 14px;
}
.company-table dd {
  margin: 0;
  font-size: 14px;
  color: var(--fg-sub);
}

/* Contact */
.contact-inner { text-align: center; }
.contact-inner p {
  color: var(--fg-sub);
  margin: 0 0 24px;
}
.contact-mail {
  display: inline-block;
  font-size: 20px;
  font-weight: 600;
  padding: 12px 24px;
  border: 2px solid var(--accent);
  border-radius: 6px;
  letter-spacing: 0.04em;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--fg-sub);
}

/* Responsive */
@media (max-width: 640px) {
  .nav { gap: 16px; font-size: 13px; }
  .hero { padding: 64px 0 56px; }
  .hero-title { font-size: 28px; }
  .section { padding: 56px 0; }
  .company-table > div {
    grid-template-columns: 120px 1fr;
    padding: 12px 4px;
  }
}