:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  font-synthesis: none;
  --accent: #087cf0;
  --background: #f2f2f7;
  --card: #ffffff;
  --primary: #1c1c1e;
  --secondary: #636366;
  --separator: rgba(60, 60, 67, 0.18);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--primary);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.page {
  width: min(100% - 32px, 720px);
  margin: 0 auto;
  padding: 64px 0 40px;
}

.landing { max-width: 560px; text-align: center; padding-top: 72px; }

.app-icon {
  display: block;
  width: 128px;
  height: 128px;
  margin: 0 auto 28px;
  border-radius: 28px;
  box-shadow: 0 12px 32px rgba(0, 80, 180, 0.2);
}

h1 { margin: 4px 0 12px; font-size: clamp(2.4rem, 8vw, 4rem); line-height: 1.05; letter-spacing: -0.035em; }
h2 { margin: 0 0 8px; font-size: 1.2rem; line-height: 1.25; }
p { margin: 0; }

.eyebrow { color: var(--accent); font-size: 0.82rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.lede { color: var(--secondary); font-size: 1.18rem; line-height: 1.45; }

.card {
  margin-top: 20px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--separator);
  border-radius: 18px;
  text-align: left;
}

.link-list { margin-top: 36px; padding: 0; overflow: hidden; }
.link-list a { display: flex; justify-content: space-between; min-height: 52px; padding: 13px 18px; align-items: center; text-decoration: none; font-weight: 600; }
.link-list a + a { border-top: 1px solid var(--separator); }

.document .back-link { display: inline-block; margin-bottom: 44px; text-decoration: none; }
.document .lede { margin-bottom: 30px; }
.document .card p { color: var(--secondary); }

footer { padding: 8px 16px 40px; color: var(--secondary); font-size: 0.82rem; text-align: center; }

@media (prefers-color-scheme: dark) {
  :root { --background: #000000; --card: #1c1c1e; --primary: #f2f2f7; --secondary: #aeaeb2; --separator: rgba(84, 84, 88, 0.65); }
  .app-icon { box-shadow: none; }
}

@media (max-width: 480px) {
  .page { padding-top: 36px; }
  .landing { padding-top: 48px; }
  .document .back-link { margin-bottom: 32px; }
  .card { padding: 18px; border-radius: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}