:root {
  --bg: #faf9f7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #0f766e;
  --accent-dark: #0d5f59;
  --border: #e8e4df;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --max: 1080px;
  --font: "Hiragino Sans", "Yu Gothic UI", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(250, 249, 247, 0.85);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4rem;
  gap: 1rem;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--text);
}

nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a:hover { color: var(--accent); }

.hero {
  padding: 6rem 0 5rem;
  background:
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.12), transparent 40%),
    linear-gradient(180deg, #fff 0%, var(--bg) 100%);
}

.hero-inner { max-width: 720px; }

.eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  line-height: 1.05;
  margin: 0.4rem 0 1rem;
}

.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.section { padding: 4.5rem 0; }
.section-muted { background: #f3f1ed; }

h2 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 0 0 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

.facts {
  margin: 0;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.facts div {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
}

.facts div:last-child { border-bottom: 0; }
.facts dt { color: var(--muted); font-weight: 600; }
.facts dd { margin: 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 { margin-top: 0; }

.contact-box {
  text-align: center;
  padding: 2.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}

.note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
}

.footer-inner a { color: var(--muted); }

@media (max-width: 720px) {
  .grid-2 { grid-template-columns: 1fr; }
  .hero { padding-top: 4.5rem; }
  nav { gap: 0.75rem; }
}