:root {
  --ink: #17232f;
  --ink-soft: #48586a;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --line: #e4e1d8;
  --brand: #1f5f5b;
  --brand-dark: #143f3c;
  --accent: #c8703f;
  --warn-bg: #fff6e8;
  --warn-line: #e8c690;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, "Times New Roman", serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

.sans {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

a { color: var(--brand); }
a:hover { color: var(--brand-dark); }

header.site {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand span { color: var(--brand); }

.nav-links {
  display: flex;
  gap: 22px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
}
.nav-links a { text-decoration: none; color: var(--ink-soft); }
.nav-links a:hover { color: var(--brand); }

.hero {
  padding: 64px 0 40px;
}
.hero h1 {
  font-size: 2.3rem;
  line-height: 1.2;
  margin: 0 0 16px;
  max-width: 22ch;
}
.hero p.lead {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0 0 28px;
}

.btn {
  display: inline-block;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 0.98rem;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--brand);
  color: #fff;
}
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  margin-left: 10px;
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.92rem;
  color: #5c4a26;
  margin: 28px 0;
}
.notice strong { color: #46381c; }

section { padding: 36px 0; }
section h2 {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 20px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1.05rem;
  margin: 0 0 8px;
}
.card p {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.product-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 24px;
}
.product-box h3 { margin-top: 0; }
.price-tag {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 700;
  color: var(--accent);
}

footer.site {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 28px 0 50px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
footer.site a { color: var(--ink-soft); }
footer.site .fine {
  margin-top: 14px;
  font-size: 0.78rem;
  color: #7b8794;
  max-width: 70ch;
}

.checklist { padding-left: 20px; }
.checklist li { margin-bottom: 6px; }