:root {
  --bg: #0b0d10;
  --surface: #14171c;
  --border: #23272e;
  --text: #e8eaed;
  --text-muted: #9aa1ab;
  --accent: #4f7cff;
  --radius: 10px;
  --max-width: 880px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

header {
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--text);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px;
}

h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

h2 {
  font-size: 1.4rem;
  margin-top: 40px;
}

p {
  color: var(--text-muted);
}

.lead {
  font-size: 1.1rem;
  color: var(--text);
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

dl {
  margin-top: 16px;
}

dt {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 16px;
}

dd {
  margin: 4px 0 0;
  font-size: 1.05rem;
}