:root {
  --bg: #0f1115;
  --fg: #e8eaed;
  --muted: #a0a6b0;
  --accent: #7eb8ff;
  --card: #1a1d24;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.55 system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
.wrap { max-width: 42rem; margin: 0 auto; padding: 1.25rem; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.brand { font-weight: 650; letter-spacing: 0.02em; }
nav a { color: var(--muted); margin-left: 0.9rem; text-decoration: none; }
nav a:hover { color: var(--fg); }
h1 { font-size: 1.85rem; line-height: 1.25; margin: 2rem 0 0.75rem; }
.lede { color: var(--muted); font-size: 1.05rem; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #0b1020;
  text-decoration: none;
  font-weight: 650;
  padding: 0.65rem 1rem;
  border-radius: 0.4rem;
}
section { margin: 2rem 0; padding: 1rem 0; border-top: 1px solid #2a2f3a; }
footer { color: var(--muted); font-size: 0.85rem; margin: 3rem 0 2rem; }