:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f8fafc;
  background: #07111f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 85% 5%, rgba(56, 189, 248, .18), transparent 34rem),
    linear-gradient(160deg, #07111f, #0f172a 70%);
}

main { width: min(760px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0; }

.brand { color: #7dd3fc; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 12px 0 16px; font-size: clamp(2.3rem, 8vw, 4.8rem); line-height: 1; }
h2 { margin-top: 42px; }
p, li { color: #cbd5e1; line-height: 1.75; }
a { color: #7dd3fc; }
.lead { font-size: 1.15rem; }
.card {
  display: block;
  margin: 14px 0;
  padding: 20px;
  border: 1px solid rgba(148, 163, 184, .25);
  border-radius: 18px;
  color: inherit;
  text-decoration: none;
  background: rgba(15, 23, 42, .72);
}
.card strong { display: block; margin-bottom: 6px; font-size: 1.15rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { padding: 11px 16px; border-radius: 999px; background: #0ea5e9; color: #04101b; font-weight: 800; text-decoration: none; }
footer { margin-top: 60px; padding-top: 22px; border-top: 1px solid rgba(148, 163, 184, .2); color: #94a3b8; }