:root {
  color-scheme: dark;
  --background: #071716;
  --surface: #0d2422;
  --text: #f4fbfa;
  --muted: #b7cfcb;
  --accent: #35d6bd;
  --border: #1d4a44;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #12312d 0, var(--background) 45rem);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  width: min(760px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3rem 0 5rem;
}

nav { margin-bottom: 2.5rem; }
nav a { color: var(--text); font-weight: 700; text-decoration: none; }

h1, h2 { line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 7vw, 4rem); margin-bottom: .5rem; }
h2 { margin-top: 2.25rem; font-size: 1.3rem; }
p, li { color: var(--muted); }
a { color: var(--accent); }
.tagline { font-size: 1.2rem; }
.card {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 1rem;
}
.meta { color: var(--muted); font-size: .9rem; }
footer { margin-top: 3rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }