:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --rule: #d2d2d7;
  --link: #0066cc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --rule: #424245;
    --link: #2997ff;
  }
}
* { 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;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 48px; height: 48px; border-radius: 11px; }
header a { color: var(--text); text-decoration: none; font-weight: 600; }
h1 { font-size: 34px; line-height: 1.15; margin: 8px 0 4px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
.updated { color: var(--muted); margin: 0 0 24px; }
.summary { border-left: 3px solid var(--rule); padding: 4px 0 4px 16px; color: var(--muted); }
a { color: var(--link); }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }

/* Home page */
.hero { padding: 8px 0 4px; }
.hero-title { display: flex; align-items: center; gap: 18px; margin-bottom: 16px; }
.hero .app-icon { width: 104px; height: 104px; border-radius: 23px; flex: none; box-shadow: 0 6px 18px rgba(0,0,0,0.18); }
.hero h1 { font-size: 34px; margin: 0 0 4px; }
.tagline { font-size: 19px; line-height: 1.3; font-weight: 600; margin: 0; }
.lede { color: var(--muted); font-size: 18px; margin: 0 0 16px; }
.badge { display: inline-block; padding: 10px 18px; border-radius: 999px; background: var(--text); color: var(--bg);
  font-weight: 600; font-size: 15px; }
.photo { width: 100%; border-radius: 16px; display: block; margin: 16px 0; }
.features { list-style: none; padding: 0; margin: 0; }
.features li { margin: 0 0 20px; }
.features strong { display: block; font-size: 19px; }
.cta { font-size: 19px; }
.caption { color: var(--muted); font-size: 14px; text-align: center; margin: -8px 0 28px; }
video.photo { background: #000; aspect-ratio: 16 / 9; }
@media (max-width: 420px) {
  .hero-title { gap: 14px; }
  .hero .app-icon { width: 84px; height: 84px; border-radius: 19px; }
  .hero h1 { font-size: 30px; }
  .tagline { font-size: 16px; }
}