:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #e5e5ea;
  --accent: #e8434a;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --text: #f5f5f7; --muted: #a1a1a6; --line: #2c2c2e; --accent: #ff6b70; }
}
* { 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: 680px; margin: 0 auto; padding: 48px 20px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { width: 64px; height: 64px; border-radius: 14px; }
header a { color: inherit; text-decoration: none; }
.app { font-size: 22px; font-weight: 600; margin: 0; }
.tagline { color: var(--muted); margin: 0; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
.meta { color: var(--muted); margin: 0 0 24px; }
a { color: var(--accent); }
ul { padding-left: 1.2em; }
li { margin: 4px 0; }
nav { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 20px; display: flex; gap: 20px; flex-wrap: wrap; }
.links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.links a {
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; text-decoration: none;
}