:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  line-height: 1.7;
  --accent: #5a4df5;
  --background: #f7f7fc;
  --surface: #ffffff;
  --text: #20202a;
  --secondary: #666674;
  --border: #e6e5ef;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0;
}

.hero, .card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
}

.hero { margin-bottom: 24px; }
.card + .card { margin-top: 16px; }
h1, h2 { line-height: 1.3; }
h1 { margin: 0 0 12px; font-size: clamp(2rem, 6vw, 3rem); }
h2 { margin-top: 0; }
p:last-child { margin-bottom: 0; }
.lead, .meta { color: var(--secondary); }
a { color: var(--accent); }
.button {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}
footer { padding: 28px 4px 0; color: var(--secondary); font-size: .9rem; }

@media (prefers-color-scheme: dark) {
  :root {
    --background: #111116;
    --surface: #1c1c24;
    --text: #f4f3fa;
    --secondary: #aaa8b6;
    --border: #30303b;
  }
}