*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: #f8fafc;
  color: #334155;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { max-width: 100%; display: block; }

ul { margin: 0; padding: 0; }

/* ── Nav ─────────────────────────────────────── */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  height: 66px;
  display: flex;
  align-items: center;
}

.masthead__inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-weight: 700;
  font-size: 1rem;
  color: #0f172a;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.95rem;
  color: #475569;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active { color: #0f172a; }

/* ── Footer ──────────────────────────────────── */

.site-footer {
  border-top: 1px solid #e2e8f0;
  padding: 1.5rem 2rem;
  text-align: center;
  background: #fff;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: #475569;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.footer-links a:hover { color: #0f172a; }

.footer-copy {
  font-size: 0.8rem;
  color: #94a3b8;
  margin: 0;
}