:root {
  color-scheme: light;
  --ink: #14241f;
  --muted: #65736d;
  --brand: #123d31;
  --brand-2: #1d684f;
  --paper: #f3f5ef;
  --card: #ffffff;
  --line: #dce3dd;
  --accent: #d9ece2;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); }
a { color: var(--brand-2); }
.shell { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.site-header { padding: 18px 0; border-bottom: 1px solid var(--line); background: rgba(243, 245, 239, .94); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: .02em; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; }
.hero { padding: 80px 0 60px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 54px; }
.eyebrow { margin: 0 0 14px; color: var(--brand-2); font-weight: 800; letter-spacing: .12em; font-size: 13px; }
h1 { margin: 0; color: var(--brand); font-size: clamp(40px, 8vw, 76px); line-height: 1; letter-spacing: -.04em; }
.lead { max-width: 660px; margin: 24px 0 0; color: #415049; font-size: clamp(18px, 3vw, 23px); line-height: 1.7; }
.hero-card { padding: 30px; border-radius: 28px; background: var(--brand); color: white; box-shadow: 0 24px 54px rgba(18, 61, 49, .18); }
.hero-card img { display: block; width: 116px; height: 116px; margin-bottom: 24px; border-radius: 25px; }
.stat { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.stat div { padding: 16px; border: 1px solid rgba(255,255,255,.18); border-radius: 16px; }
.stat strong { display: block; font-size: 25px; }
.stat span { font-size: 13px; color: #cfe4da; }
.section { padding: 36px 0 72px; }
.section h2 { margin: 0 0 24px; color: var(--brand); font-size: clamp(28px, 5vw, 42px); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); }
.card h3 { margin: 0 0 10px; color: var(--brand); font-size: 19px; }
.card p { margin: 0; color: var(--muted); line-height: 1.75; }
.notice { padding: 22px; border-radius: 18px; background: var(--accent); line-height: 1.75; }
.page { width: min(780px, calc(100% - 32px)); margin: 40px auto 80px; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: var(--card); }
.page h1 { font-size: clamp(30px, 7vw, 46px); line-height: 1.2; letter-spacing: -.02em; }
.page h2 { margin: 32px 0 10px; color: var(--brand); font-size: 20px; }
.page p, .page li { font-size: 15px; line-height: 1.85; }
.meta { color: var(--muted); font-size: 13px !important; }
.contact { display: inline-block; margin-top: 10px; padding: 12px 18px; border-radius: 12px; background: var(--brand); color: white; text-decoration: none; font-weight: 700; }
.site-footer { padding: 28px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 760px) {
  .hero { padding-top: 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .cards { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; }
  .nav-links { justify-content: flex-end; gap: 12px; }
  .page { margin-top: 20px; padding: 24px 20px; }
}