:root {
  color-scheme: light;
  --green: #1c5e0d;
  --dark: #1b4b0b;
  --bg: #f6f9f4;
  --text: #172012;
  --muted: #445;
  --border: #d7e4cf;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.55;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}
nav {
  margin-bottom: 24px;
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}
nav a {
  color: #3d7b37;
  text-decoration: none;
  font-weight: 600;
}
h1 {
  color: var(--dark);
  margin: 0 0 8px;
  font-size: 28px;
}
h2 {
  color: var(--dark);
  margin: 28px 0 10px;
  font-size: 18px;
}
h3 {
  margin: 18px 0 8px;
  font-size: 16px;
  color: var(--text);
}
p, li { color: var(--muted); }
a { color: #3d7b37; }
.updated {
  color: #666;
  font-weight: 600;
  margin: 0 0 20px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-top: 20px;
}
.card h2 { margin-top: 0; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
.cta {
  display: inline-block;
  background: var(--green);
  color: #fff !important;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 600;
  margin-top: 8px;
}
.footer-note {
  margin-top: 36px;
  font-size: 13px;
  color: #666;
}