:root {
  color-scheme: light dark;
  --text: #1c1c1e;
  --secondary: #6c6c70;
  --background: #f2f2f7;
  --card: #ffffff;
  --accent: #007aff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f7;
    --secondary: #98989f;
    --background: #000000;
    --card: #1c1c1e;
    --accent: #0a84ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 22px;
  margin: 32px 0 8px;
}

ul {
  padding-left: 22px;
}

li + li {
  margin-top: 6px;
}

.secondary {
  color: var(--secondary);
}

.hero {
  text-align: center;
  padding: 40px 0 24px;
}

.hero img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
}

.hero p {
  font-size: 20px;
  margin: 0;
}

.button {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
}

.button:hover {
  text-decoration: none;
  opacity: 0.85;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 4px 24px 20px;
  margin-top: 24px;
}

.back {
  display: inline-block;
  margin-bottom: 24px;
}

footer {
  margin-top: 40px;
  font-size: 14px;
  text-align: center;
  color: var(--secondary);
}

footer a + a {
  margin-left: 16px;
}