:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
  color: #172033;
  background: #f5f7fb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(55, 125, 255, 0.12), transparent 34rem),
    #f5f7fb;
}

main {
  width: min(100% - 32px, 860px);
  margin: 0 auto;
  padding: 48px 0 80px;
}

.card {
  padding: clamp(24px, 5vw, 44px);
  border: 1px solid rgba(23, 32, 51, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 60px rgba(25, 42, 78, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(30px, 6vw, 42px);
  letter-spacing: -0.025em;
}

h2 {
  margin: 36px 0 12px;
  font-size: 22px;
}

p,
li {
  font-size: 16px;
  line-height: 1.75;
}

.muted {
  color: #667085;
}

.links {
  display: grid;
  gap: 12px;
  padding: 0;
  list-style: none;
}

.links a {
  display: block;
  padding: 16px 18px;
  border: 1px solid #dbe4f2;
  border-radius: 14px;
  background: #fff;
}

a {
  color: #2164d8;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  :root {
    color: #edf2ff;
    background: #0e1420;
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(55, 125, 255, 0.18), transparent 34rem),
      #0e1420;
  }

  .card {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(20, 28, 43, 0.94);
    box-shadow: none;
  }

  .muted {
    color: #aab6ca;
  }

  .links a {
    border-color: #344158;
    background: #182235;
  }

  a {
    color: #8ab4ff;
  }
}