:root {
  --bg: #f7f8fb;
  --text: #20242d;
  --muted: #5f6b7a;
  --line: #d9dee8;
  --panel: #ffffff;
  --blue: #0969da;
  --green: #1f883d;
  --amber: #9a6700;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: var(--blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--text);
  font-size: 20px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 44px 24px 64px;
}

.page > h1:first-child {
  margin-top: 0;
  font-size: 42px;
  line-height: 1.12;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h2 {
  margin-top: 36px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 28px;
  background: var(--panel);
}

th,
td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef2f8;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

pre {
  overflow: auto;
  background: #eef2f8;
  border: 1px solid var(--line);
  padding: 16px;
}

.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .page > h1:first-child {
    font-size: 32px;
  }
}