:root {
  --ink: #1f2933;
  --muted: #52606d;
  --line: #d9e2ec;
  --bg: #ffffff;
  --band: #f5f7fa;
  --accent: #1d5fa8;
  --accent-dark: #164a85;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1.0625rem;
}
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
.wrap { max-width: 46rem; margin: 0 auto; padding: 0 1.25rem; }
header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1.5rem; padding-top: 1rem; padding-bottom: 1rem; }
.brand { font-size: 1.4rem; font-weight: 700; color: var(--ink); text-decoration: none; letter-spacing: 0.01em; }
nav.main { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
nav.main a { color: var(--muted); text-decoration: none; font-size: 0.98rem; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--accent); text-decoration: underline; }
main { padding: 2.25rem 0 3rem; }
h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 1rem; }
h2 { font-size: 1.35rem; line-height: 1.3; margin: 2rem 0 0.5rem; }
p, ul { margin: 0 0 1rem; }
ul { padding-left: 1.4rem; }
li { margin-bottom: 0.4rem; }
.lead { font-size: 1.2rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.95rem; }
.cards { display: grid; gap: 1rem; grid-template-columns: 1fr; margin: 1rem 0 1.5rem; }
@media (min-width: 40rem) { .cards { grid-template-columns: 1fr 1fr; } }
.card { border: 1px solid var(--line); border-radius: 8px; padding: 1.1rem 1.25rem; background: var(--band); }
.card h3 { margin: 0 0 0.4rem; font-size: 1.15rem; }
.card p { margin: 0; }
.signup { border: 1px solid var(--line); border-radius: 8px; padding: 1.25rem; background: var(--band); margin-top: 1rem; }
.signup label { display: block; font-weight: 600; margin-bottom: 0.4rem; }
.signup input[type="email"] { width: 100%; padding: 0.65rem 0.75rem; font: inherit; border: 1px solid #9aa5b1; border-radius: 6px; }
.signup button { margin-top: 0.75rem; padding: 0.65rem 1.25rem; font: inherit; font-weight: 600; color: #fff; background: var(--accent); border: 0; border-radius: 6px; cursor: pointer; }
.signup button:hover { background: var(--accent-dark); }
.signup .fine { margin: 0.75rem 0 0; font-size: 0.9rem; color: var(--muted); }
footer.site { border-top: 1px solid var(--line); background: var(--band); padding: 1.5rem 0 2rem; font-size: 0.95rem; color: var(--muted); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; margin-bottom: 0.75rem; }
footer.site p { margin: 0 0 0.35rem; }