:root {
  --ink: #16202b;
  --ink-soft: #45525f;
  --bg: #fbfaf7;
  --bg-alt: #f1f0ea;
  --line: #dcdad2;
  --accent: #1d5c63;
  --accent-soft: #e3edec;
  --card-bg: #ffffff;
  --max-w: 780px;
  font-size: 17px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

h1, h2, h3, .nav-brand {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  letter-spacing: -0.01em;
}

a { color: var(--accent); }
a:hover { color: #123f44; }

/* Nav */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.88rem;
}
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
}
.nav-links a:hover { color: var(--accent); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--ink);
}

/* Hero */
.hero {
  padding: 5rem 1.5rem 4rem;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.eyebrow {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 1rem;
}
.hero h1 {
  font-size: 2.3rem;
  line-height: 1.25;
  margin: 0 0 1.3rem;
}
.hero-sub {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 620px;
}
.hero-cta {
  display: flex;
  gap: 0.9rem;
  margin-top: 1.8rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: 4px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #123f44; color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Sections */
.section { padding: 4rem 1.5rem; border-bottom: 1px solid var(--line); }
.section-alt { background: var(--bg-alt); }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.kicker {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}
.section h2 {
  font-size: 1.6rem;
  line-height: 1.3;
  margin: 0 0 1.3rem;
}
.sub-h {
  font-size: 1.15rem;
  margin: 2rem 0 0.8rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1.3rem;
}
.card h3 {
  font-size: 1rem;
  margin: 0 0 0.6rem;
  color: var(--accent);
}
.card p { font-size: 0.94rem; color: var(--ink-soft); margin: 0 0 0.8rem; }
.card a {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 600;
}

.callout {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.3rem;
  border-radius: 0 4px 4px 0;
  font-size: 0.98rem;
}

blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.4rem;
  border-left: 3px solid var(--line);
  font-style: italic;
  color: var(--ink-soft);
}
blockquote cite {
  display: block;
  margin-top: 0.6rem;
  font-style: normal;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.82rem;
  color: var(--ink);
}

.stack { display: flex; flex-direction: column; gap: 1.6rem; margin: 1.5rem 0; }
.stack-item h3 { font-size: 1.05rem; margin: 0 0 0.4rem; }
.stack-item p { margin: 0; color: var(--ink-soft); }

.check-list { padding-left: 1.2rem; margin: 1.2rem 0; }
.check-list li { margin-bottom: 1rem; color: var(--ink-soft); }
.check-list strong { color: var(--ink); }

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1.3rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.88rem;
}
.link-row a { text-decoration: none; font-weight: 600; }

.text-link {
  display: inline-block;
  margin-top: 1rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.source-list { list-style: none; padding: 0; margin: 1.5rem 0; }
.source-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.source-list a { text-decoration: none; }
.fine-print { font-size: 0.85rem; color: var(--ink-soft); margin-top: 1.5rem; }

.faq-list { display: flex; flex-direction: column; gap: 0.8rem; margin-top: 1.5rem; }
.faq-list details {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1rem 1.3rem;
}
.faq-list summary {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.98rem;
}
.faq-list p {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
}

.site-footer {
  padding: 2.5rem 1.5rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.footer-links {
  margin-top: 0.8rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
.footer-links a { text-decoration: none; font-weight: 600; }

@media (max-width: 680px) {
  :root { font-size: 16px; }
  .hero { padding: 3.5rem 1.25rem 2.5rem; }
  .hero h1 { font-size: 1.7rem; }
  .section { padding: 2.8rem 1.25rem; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-top: 1px solid var(--line); }
  .nav-links a { display: block; padding: 0.9rem 1.5rem; }
}