:root {
  --bg: #f4f3f7;
  --card: #ffffff;
  --text: #121216;
  --muted: #6b6b76;
  --accent-1: #3c3082;
  --accent-2: #7e4ace;
  --line: #e4e2ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b10;
    --card: #17171f;
    --text: #f4f4f7;
    --muted: #9a9aa6;
    --line: #262631;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 80px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 36px; }
header img { width: 56px; height: 56px; border-radius: 13px; }
header a { color: inherit; text-decoration: none; font: 700 22px/1 ui-rounded, -apple-system, sans-serif; }
h1 { font: 800 40px/1.12 ui-rounded, -apple-system, sans-serif; margin: 0 0 12px; letter-spacing: -0.5px; }
h2 { font: 700 21px/1.3 ui-rounded, -apple-system, sans-serif; margin: 34px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px 24px;
  margin: 18px 0;
}
.button {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #fff;
  padding: 14px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.features .card { margin: 0; }
.features h3 { margin: 0 0 4px; font-size: 17px; }
.features p { margin: 0; color: var(--muted); font-size: 15px; }
footer { margin-top: 56px; font-size: 14px; color: var(--muted); }
footer a { color: var(--muted); }
a { color: var(--accent-2); }