:root {
  color-scheme: light;
  --green-950: #15352a;
  --green-800: #24533f;
  --cream: #fbfaf5;
  --ink: #1d2923;
  --muted: #5c6a63;
  --border: #d7e0da;
  --blue: #176fa3;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.6;
}
a { color: var(--blue); }
header { background: var(--green-950); color: white; }
.nav, main, footer {
  width: min(900px, calc(100% - 40px));
  margin: 0 auto;
}
.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  color: white;
  font-size: 1.25rem;
  font-weight: 750;
  text-decoration: none;
}
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; }
.nav-links a { color: #f5f8f6; text-decoration: none; }
main { padding: 56px 0 64px; }
.hero { padding: 34px 0 28px; }
h1 {
  margin: 0 0 16px;
  color: var(--green-950);
  font-size: clamp(2.3rem, 7vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}
h2 { margin-top: 42px; color: var(--green-950); line-height: 1.2; }
h3 { color: var(--green-800); }
.lede { max-width: 720px; font-size: 1.25rem; color: var(--muted); }
.promise, .card {
  margin-top: 28px;
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: white;
}
.promise { border-left: 5px solid var(--green-800); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.card h3 { margin-top: 0; }
ul, ol { padding-left: 1.35rem; }
footer {
  padding: 28px 0 42px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}
footer a { color: inherit; }
.meta { color: var(--muted); font-size: 0.95rem; }
@media (max-width: 640px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  main { padding-top: 32px; }
}