:root {
  --primary: #1b5e20;
  --primary-dark: #103f14;
  --container: #a5d6a7;
  --cream: #fbfdf8;
  --text: #1a1c18;
  --text-muted: #4a4f47;
  --border: #e2e8e0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.65;
}

a { color: var(--primary); }

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: 860px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  gap: 22px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95em;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
}

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 10px 24px 80px;
}

.hero {
  border-radius: 20px;
  overflow: hidden;
  margin: 10px 0 40px;
  box-shadow: 0 8px 28px rgba(27, 94, 32, 0.18);
}

.hero img {
  width: 100%;
  display: block;
}

.tagline {
  font-size: 1.2em;
  color: var(--text-muted);
  margin-top: -12px;
  margin-bottom: 36px;
}

h1 {
  font-size: 2em;
  margin-bottom: 6px;
}

h2 {
  font-size: 1.3em;
  margin-top: 40px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.updated {
  color: var(--text-muted);
  font-size: 0.9em;
}

.summary {
  background: #eef6ee;
  border-left: 4px solid var(--primary);
  padding: 14px 18px;
  border-radius: 4px;
  margin: 20px 0;
}

.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0 8px;
}

.feature-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.05em;
  color: var(--primary);
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.94em;
}

ul { padding-left: 22px; }
li { margin-bottom: 8px; }

footer {
  max-width: 860px;
  margin: 40px auto 0;
  padding: 24px 24px 40px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9em;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

footer a { color: var(--text-muted); }

@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
}