:root {
  color-scheme: light dark;
  --bg: #f6f4ef;
  --card: #fffdf8;
  --text: #1c1917;
  --muted: #57534e;
  --accent: #3d6b4f;
  --border: #e7e0d4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1917;
    --card: #292524;
    --text: #fafaf9;
    --muted: #a8a29e;
    --accent: #86c99a;
    --border: #44403c;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header {
  margin-bottom: 2rem;
}

h1 {
  font-size: 1.85rem;
  line-height: 1.2;
  margin: 0 0 0.4rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2rem 0 0.6rem;
}

p,
li {
  color: var(--text);
}

.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

nav a,
a {
  color: var(--accent);
}

nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

section,
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.2rem;
}