:root {
  color-scheme: light dark;
  --bg: #f8f7f4;
  --surface: #ffffff;
  --text: #171719;
  --muted: #65656b;
  --line: #deddd9;
  --accent: #ff5f42;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c0d10; --surface: #17181c; --text: #f7f5f1; --muted: #aaa8a3; --line: #34353a; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
header, main, footer { width: min(900px, calc(100% - 40px)); margin-inline: auto; }
header { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-size: 20px; font-weight: 750; }
.brand img { width: 42px; height: 42px; border-radius: 8px; }
nav { display: flex; gap: 20px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
.intro { padding: 84px 0 50px; max-width: 760px; }
.eyebrow { color: var(--accent); font-size: 13px; font-weight: 750; text-transform: uppercase; }
h1 { margin: 8px 0 18px; font-size: clamp(38px, 8vw, 68px); line-height: 1.05; letter-spacing: 0; }
h2 { margin-top: 36px; font-size: 21px; letter-spacing: 0; }
p { color: var(--muted); }
.intro > p:not(.eyebrow) { max-width: 650px; font-size: 20px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 30px; }
.app-store-button { display: inline-block; border-radius: 13px; line-height: 0; }
.app-store-button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.app-store-button img { display: block; width: 194px; max-width: 100%; height: auto; }
.device-note { color: var(--muted); font-size: 14px; }
.links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; padding-bottom: 76px; }
.links a { display: grid; gap: 5px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); text-decoration: none; }
.links span { color: var(--muted); }
.document { max-width: 720px; padding: 64px 0 80px; }
.document h1 { font-size: clamp(38px, 7vw, 56px); }
.document a { color: var(--accent); }
.button { display: inline-block; padding: 10px 15px; border: 1px solid var(--accent); border-radius: 6px; text-decoration: none; }
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
@media (max-width: 600px) {
  header { align-items: flex-start; padding: 16px 0; }
  nav { gap: 12px; padding-top: 8px; }
  .intro { padding-top: 54px; }
  .links { grid-template-columns: 1fr; }
}