:root {
  --bg: #f2f5f7;
  --surface: #ffffff;
  --border: #dfe6eb;
  --text: #16232e;
  --secondary: #3a4c5a;
  --primary: #1e4357;
  --accent: #b34a22;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1620;
    --surface: #16232e;
    --border: #253643;
    --text: #e8eef2;
    --secondary: #a3b2bd;
    --primary: #a0c5da;
    --accent: #f2a87e;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 32px 20px 96px;
  background: var(--bg);
  color: var(--text);
  font:
    400 17px/1.6 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

header {
  max-width: 44rem;
  margin: 0 auto 32px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

header .brand {
  font-weight: 600;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
}

header nav {
  margin-left: auto;
  display: flex;
  gap: 16px;
  font-size: 15px;
}

h1 {
  font-size: 32px;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

h2 {
  font-size: 21px;
  font-weight: 600;
  margin: 40px 0 12px;
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 24px 0 8px;
}

p,
li {
  color: var(--secondary);
}

p {
  margin: 0 0 16px;
}

ul {
  margin: 0 0 16px;
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
}

strong {
  color: var(--text);
  font-weight: 600;
}

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

.lead {
  font-size: 19px;
  color: var(--text);
}

.meta {
  font-size: 15px;
  color: var(--secondary);
  margin-bottom: 32px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
}

.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  margin-bottom: 16px;
}

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

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

th {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

td {
  color: var(--secondary);
}

footer {
  max-width: 44rem;
  margin: 64px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 15px;
  color: var(--secondary);
}