:root {
  color-scheme: dark;
  font-family: system-ui, sans-serif;
  background: #0d1117;
  color: #f0f3f6;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; }
main { width: min(760px, calc(100% - 32px)); padding: 64px 0; }
h1 { font-size: clamp(2.4rem, 8vw, 5rem); margin: 0 0 16px; }
p { color: #aeb8c4; font-size: 1.15rem; line-height: 1.6; }
nav { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
a { color: #fff; border: 1px solid #44505e; border-radius: 8px; padding: 12px 18px; text-decoration: none; }
a:hover { border-color: #ef933f; }