:root {
  --bg: #f6f8f7;
  --surface: #ffffff;
  --text: #16201c;
  --muted: #55625c;
  --accent: #127a5c;
  --accent-soft: #e3f3ec;
  --border: #dde5e1;
  --warn: #8a4b08;
  --warn-soft: #fdf1e2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1110;
    --surface: #151c1a;
    --text: #e6eeea;
    --muted: #9aa8a2;
    --accent: #7fd8b5;
    --accent-soft: #1b2f28;
    --border: #26322e;
    --warn: #f3c287;
    --warn-soft: #2e2416;
  }
}

* {
  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,
main,
footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  font-size: 20px;
  text-decoration: none;
}

.brand span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--bg);
  font-size: 18px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 15px;
}

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

main {
  padding-bottom: 48px;
}

h1 {
  font-size: clamp(28px, 6vw, 40px);
  line-height: 1.2;
  margin: 24px 0 12px;
}

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

h3 {
  font-size: 17px;
  margin: 20px 0 4px;
}

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

.lead {
  font-size: 18px;
  color: var(--muted);
}

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

.note {
  background: var(--accent-soft);
  border-radius: 12px;
  padding: 12px 16px;
}

.warn {
  background: var(--warn-soft);
  color: var(--warn);
  border-radius: 12px;
  padding: 12px 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.grid .card {
  margin: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.table-wrap {
  overflow-x: auto;
}

ol li,
ul li {
  margin: 4px 0;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  padding-bottom: 32px;
  color: var(--muted);
  font-size: 14px;
}