:root {
  color-scheme: light;
}
* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  background: #f8fafc;
}
body {
  margin: 0;
  background: #f8fafc;
  color: #1e293b;
  font-family: 'Segoe UI', ui-sans-serif, system-ui, -apple-system, Roboto, Arial, sans-serif;
  line-height: 1.65;
  font-size: 16px;
}
header {
  background: #0f172a;
  color: #e2e8f0;
}
.bar {
  max-width: 860px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
nav a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 14px;
  padding: 4px 10px;
  border-radius: 999px;
}
nav a:hover,
nav a[aria-current='page'] {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}
article {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 28px 24px;
}
h1 {
  margin: 0 0 4px;
  font-size: 1.75rem;
  color: #0f172a;
}
.updated {
  margin: 0 0 24px;
  color: #64748b;
  font-size: 14px;
}
h2 {
  margin: 28px 0 8px;
  font-size: 1.15rem;
  color: #0f172a;
}
p,
li {
  color: #334155;
}
ul {
  padding-left: 22px;
}
a {
  color: #0369a1;
}
.summary {
  background: #ecfeff;
  border: 1px solid #a5f3fc;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 8px;
}
.summary p {
  margin: 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 4px;
  font-size: 15px;
}
th,
td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid #e2e8f0;
}
th {
  background: #f1f5f9;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #475569;
}
.card-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 12px;
}
.card {
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 14px 16px;
}
.card h3 {
  margin: 0 0 4px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #64748b;
}
.card p {
  margin: 0;
  font-weight: 600;
  color: #0f172a;
  word-break: break-word;
}
footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px 40px;
  color: #64748b;
  font-size: 14px;
}
@media (max-width: 520px) {
  article {
    padding: 20px 16px;
  }
  h1 {
    font-size: 1.45rem;
  }
}