:root {
  --bg: #f7f5ee;
  --text: #1f2a22;
  --muted: #5b6b5f;
  --accent: #2f7a4f;
  --card: #ffffff;
  --line: #dfe5dc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101914;
    --text: #e8efe9;
    --muted: #9fb0a4;
    --accent: #7fcf9b;
    --card: #17231c;
    --line: #2a3a30;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}
header { margin-bottom: 24px; }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 0.92rem; }
a { color: var(--accent); }
nav { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.95rem; margin-bottom: 18px; }
table { width: 100%; border-collapse: collapse; margin: 8px 0 16px; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 0;
}
.table-wrap { overflow-x: auto; }