:root {
  --bg: #fbfaf7;
  --text: #17161a;
  --muted: #64616b;
  --line: #e6e3dc;
  --card: #ffffff;
  --accent: #2f6b4f;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121114;
    --text: #f2f0ec;
    --muted: #a19ea7;
    --line: #2b2930;
    --card: #1b1a1e;
    --accent: #7cc4a0;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

main, header, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 28px;
  padding-bottom: 8px;
}

.brand {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand span { color: var(--accent); }

nav { display: flex; gap: 18px; flex-wrap: wrap; }

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
}

nav a:hover, nav a[aria-current="page"] { color: var(--text); }

main { padding-top: 24px; padding-bottom: 48px; }

h1 {
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 16px 0 8px;
}

h2 {
  font-size: 21px;
  line-height: 1.3;
  margin: 36px 0 8px;
}

h3 { font-size: 17px; margin: 24px 0 4px; }

p, li { overflow-wrap: anywhere; }

ul { padding-left: 22px; }

li { margin: 6px 0; }

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

.lead { font-size: 20px; color: var(--muted); margin-top: 0; }

.meta { color: var(--muted); font-size: 15px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 20px;
  margin: 20px 0;
}

.links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.button.primary { background: var(--text); color: var(--bg); border-color: var(--text); }

footer {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  padding-bottom: 36px;
  color: var(--muted);
  font-size: 14px;
}

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