:root {
  --bg: #f7f8f6;
  --card: #ffffff;
  --text: #1c2420;
  --muted: #5b6660;
  --line: #e2e6e3;
  --brand: #1f7a4d;
  --note-bg: #fff6d6;
  --note-line: #e8c95a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --card: #1a201d;
    --text: #e8ece9;
    --muted: #a3ada7;
    --line: #2c3430;
    --brand: #5cc28e;
    --note-bg: #3a3214;
    --note-line: #8a7426;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 14px; padding-bottom: 14px; }
.logo { font-weight: 700; font-size: 20px; color: var(--brand); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:hover { color: var(--brand); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
main { padding: 32px 0 56px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 20px; margin: 34px 0 8px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
.updated { color: var(--muted); margin: 0 0 24px; font-size: 14px; }
a { color: var(--brand); }
table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 9px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 16px 0;
}
ol.steps li { margin-bottom: 8px; }
.todo {
  background: var(--note-bg);
  border: 1px dashed var(--note-line);
  border-radius: 4px;
  padding: 0 4px;
}
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 20px 0 32px; }
footer a { color: var(--muted); margin-right: 14px; }