:root {
  color-scheme: dark;
  --bg: #000;
  --fg: #fff;
  --muted: #9a9a9a;
  --line: #202020;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  display: flex;
  justify-content: center;
}

main {
  width: min(760px, 100%);
  padding: 48px 24px 72px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 96px;
}

.brand {
  font-size: 28px;
  font-weight: 800;
}

.links {
  display: flex;
  gap: 18px;
}

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

a:hover { text-decoration: underline; }

h1 {
  max-width: 620px;
  margin: 0 0 24px;
  font-size: clamp(42px, 9vw, 92px);
  line-height: 0.95;
  font-weight: 850;
}

h2 {
  margin-top: 56px;
  font-size: 26px;
}

p, li {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.tagline {
  color: var(--fg);
  font-size: 24px;
  line-height: 1.3;
  max-width: 520px;
}

.rule {
  height: 2px;
  margin: 56px 0;
  background: linear-gradient(90deg, transparent, #fff, transparent);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 28px;
  padding: 0 18px;
  border: 1px solid #fff;
  border-radius: 6px;
  color: #000;
  background: #fff;
  font-weight: 700;
}

footer {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: #777;
  font-size: 14px;
}