:root {
  --ink: #22302a;
  --muted: #6b7a72;
  --accent: #1f7a5c;
  --bg: #faf8f3;
  --card: #ffffff;
  --line: #e5e0d4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}
header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
nav {
  max-width: 760px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand { font-weight: 700; }
.navlinks a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
}
.navlinks a:hover { color: var(--accent); }
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}
.hero { text-align: center; padding: 40px 0 8px; }
.hero h1 { font-size: 2.4rem; margin: 0 0 8px; }
.tagline { color: var(--muted); font-size: 1.15rem; margin: 0; }
h2 { margin-top: 36px; }
a { color: var(--accent); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 22px;
}
.card h3 { margin-top: 4px; }
.muted { color: var(--muted); }
footer {
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 20px;
}