:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #060d1d;
  color: #e9f1ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #12274b, #060d1d 58%);
  line-height: 1.6;
}

.card {
  width: min(100% - 2rem, 760px);
  margin: 4rem auto;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: rgba(10, 22, 46, 0.94);
  border: 1px solid rgba(150, 190, 255, 0.2);
  border-radius: 1.25rem;
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.28);
}

.icon { display: block; width: 96px; height: 96px; margin-bottom: 1rem; border-radius: 1.25rem; }
.eyebrow { margin: 0 0 .5rem; color: #2fd6f2; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 0 0 1rem; font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.1; }
h2 { margin-top: 2rem; color: #78e7f6; font-size: 1.35rem; }
a { color: #79e9ff; }
.button { display: inline-block; padding: .7rem 1rem; border-radius: .65rem; background: #18bfdc; color: #04101e; font-weight: 700; text-decoration: none; }
.button:hover, .button:focus-visible { background: #7ceeff; }
.support, .meta { color: #b9c7df; font-size: .95rem; }
code { color: #d7e6ff; }
li { margin: .65rem 0; }

@media (max-width: 600px) {
  .card { margin: 1rem auto; }
}