:root {
  color-scheme: light dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0d1117;
  color: #e6edf3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 15% 15%, rgba(42, 111, 151, .25), transparent 35rem),
    #0d1117;
}

main {
  width: min(42rem, calc(100% - 2rem));
  padding: 4rem 0;
}

.eyebrow {
  color: #7ee787;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 {
  max-width: 13ch;
  margin: .65rem 0 1rem;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.lead {
  max-width: 37rem;
  color: #b1bac4;
  font-size: 1.15rem;
  line-height: 1.65;
}

section {
  margin-top: 3rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid #30363d;
  border-radius: .9rem;
  background: rgba(22, 27, 34, .8);
}

section h2 { margin: 0 0 .6rem; font-size: 1rem; }
section p { margin: 0; color: #b1bac4; }
.dot { display: inline-block; width: .65rem; height: .65rem; margin-right: .5rem; border-radius: 50%; background: #3fb950; }

footer { margin-top: 3rem; color: #8c959f; }
a { color: #79c0ff; text-decoration: none; }
a:hover { text-decoration: underline; }

@media (prefers-color-scheme: light) {
  :root { background: #f6f8fa; color: #1f2328; }
  body { background: radial-gradient(circle at 15% 15%, rgba(9, 105, 218, .12), transparent 35rem), #f6f8fa; }
  .lead, section p { color: #59636e; }
  section { border-color: #d0d7de; background: rgba(255, 255, 255, .8); }
}