:root {
  --ink: #1a2620;
  --muted: #5c6b62;
  --canvas: #f4f6f2;
  --surface: #ffffff;
  --hairline: #dde3dc;
  --moss: #2f6b3a;
  --ember: #c2470f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8efe8;
    --muted: #9aa89f;
    --canvas: #131714;
    --surface: #1b211d;
    --hairline: #2c332e;
    --moss: #7fb98a;
    --ember: #e8825a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px 72px;
  background: var(--canvas);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: 44rem; margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 40px 0 8px;
}

.mark {
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border-radius: 11px;
  background: linear-gradient(160deg, #12251a, #1d3a26);
  display: grid;
  place-items: center;
}

.mark svg { width: 30px; height: 30px; display: block; }

header h1 { margin: 0; font-size: 1.3rem; letter-spacing: -0.01em; }
header p { margin: 2px 0 0; color: var(--muted); font-size: 0.92rem; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
}

nav a {
  color: var(--moss);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 6px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface);
}

nav a:hover { border-color: var(--moss); }

main { padding-top: 28px; }

h2 {
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin: 36px 0 10px;
}

h3 {
  font-size: 1.03rem;
  margin: 26px 0 6px;
}

p, ul { margin: 10px 0; }
ul { padding-left: 1.25rem; }
li { margin: 6px 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 18px 0;
}

.card h3 { margin-top: 0; }

.lede { font-size: 1.06rem; color: var(--muted); }

.stamp {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  padding: 3px 10px;
  background: var(--surface);
}

strong { font-weight: 650; }
a { color: var(--moss); }
code {
  font: 0.88em ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 5px;
  padding: 1px 5px;
}

.warn {
  border-left: 3px solid var(--ember);
  padding-left: 14px;
  margin: 18px 0;
}

footer {
  margin-top: 48px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
  color: var(--muted);
  font-size: 0.86rem;
}

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