:root {
  color-scheme: light;
  font-size: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Roboto, system-ui, -apple-system, sans-serif;
  background: #ffffff;
  color: #0b0b0b;
  line-height: 1.6;
}

a {
  color: #004aad;
}

a:hover,
a:focus {
  text-decoration: underline;
}

header,
nav,
main,
footer {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

header {
  background: #0b0b0b;
  color: #ffffff;
}

.site-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

.site-subtitle {
  margin: 0.25rem 0 0;
  font-size: 1rem;
  color: #d0d0d0;
}

nav {
  background: #f3f3f3;
  border-bottom: 1px solid #d0d0d0;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

nav a {
  text-decoration: none;
  color: #0b0b0b;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-weight: 600;
}

nav a[aria-current] {
  background: #0b0b0b;
  color: #ffffff;
}

main {
  background: #ffffff;
}

article h1 {
  font-size: 2rem;
  margin-top: 0;
}

article h2 {
  margin-top: 2rem;
  font-size: 1.4rem;
}

article p {
  margin-bottom: 1rem;
}

article ul {
  padding-left: 1.25rem;
}

footer {
  background: #0b0b0b;
  color: #ffffff;
  font-size: 0.95rem;
}

footer a {
  color: #66a6ff;
}