:root {
  --paper: #FFFFFF;
  --ink: #1D1D1F;
  --muted: #6E6E73;
  --key: #F5F5F7;
  --line: rgba(0, 0, 0, 0.10);
  --accent: #007AFF;
  --on-accent: #FFFFFF;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #111113;
    --ink: #F5F5F7;
    --muted: #A1A1A6;
    --key: #2C2C2E;
    --line: rgba(255, 255, 255, 0.12);
    --accent: #0A84FF;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.55 -apple-system, "SF Pro Text", "SF Pro", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main, footer { max-width: 760px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.lang { display: flex; justify-content: flex-end; max-width: 760px; margin: 0 auto; padding: 20px 24px 0; font-size: 14px; color: var(--muted); }
.lang a { color: var(--muted); }

/* hero */
.hero { padding: 56px 0 40px; }
.icon { width: 96px; height: 96px; display: block; margin: 0 0 20px -6px; }
h1.name {
  font-size: 4rem; line-height: 1; font-weight: 700; letter-spacing: -0.035em;
  margin: 0 0 18px;
}
.headline { font-size: 1.6rem; line-height: 1.3; font-weight: 600; letter-spacing: -0.015em; margin: 0 0 12px; max-width: 34ch; }
.sub { color: var(--muted); margin: 0 0 28px; max-width: 58ch; }

/* keycaps: the signature element */
kbd {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 1.9em; height: 1.9em; padding: 0 0.45em;
  font: 600 0.82em/1 -apple-system, "SF Pro Text", system-ui, sans-serif;
  color: var(--ink); background: var(--key);
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px;
  vertical-align: 0.05em;
}
kbd + kbd { margin-left: 3px; }

/* download */
.get { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.button {
  display: inline-block; padding: 12px 22px; border-radius: 12px;
  background: var(--accent); color: var(--on-accent); font-weight: 600; text-decoration: none;
}
.button:hover { filter: brightness(1.06); }
.req { color: var(--muted); font-size: 15px; }
.cmd { margin: 22px 0 0; }
.cmd p { margin: 0 0 8px; color: var(--muted); font-size: 15px; }
pre {
  margin: 0; padding: 14px 16px; overflow-x: auto;
  background: var(--key); border: 1px solid var(--line); border-radius: 10px;
  font: 14px/1.5 ui-monospace, "SF Mono", Menlo, monospace;
}

/* highlights */
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 40px; padding: 40px 0; border-top: 1px solid var(--line); }
.features h2 { font-size: 1.05rem; font-weight: 650; margin: 12px 0 6px; letter-spacing: -0.01em; }
.features p { margin: 0; color: var(--muted); }
.keys { min-height: 1.9em; }

.open { padding: 28px 0 40px; border-top: 1px solid var(--line); color: var(--muted); }
.open p { margin: 0; max-width: 60ch; }

/* text pages */
.page { padding: 40px 0 48px; }
.page .back { font-size: 15px; color: var(--muted); }
.page h1 { font-size: 2.5rem; line-height: 1.1; font-weight: 700; letter-spacing: -0.03em; margin: 20px 0 10px; }
.page .lede { color: var(--muted); margin: 0 0 32px; max-width: 60ch; }
.page h2 { font-size: 1.15rem; font-weight: 650; margin: 32px 0 8px; letter-spacing: -0.01em; }
.page .faq-h { font-size: 1.4rem; margin-top: 48px; }
.page h3 { font-size: 1.02rem; font-weight: 650; margin: 26px 0 6px; }
.page h3 + div { color: var(--muted); max-width: 65ch; }
.page h3 + div pre { margin: 10px 0; color: var(--ink); }
.page p, .page li { max-width: 65ch; }
.page ul { padding-left: 1.2em; }
.page li { margin: 4px 0; }
.page code { font: 0.88em ui-monospace, "SF Mono", Menlo, monospace; background: var(--key); padding: 1px 5px; border-radius: 5px; overflow-wrap: anywhere; }
.page .date { color: var(--muted); font-size: 15px; margin-top: 36px; }

/* changelog */
.release { padding-top: 8px; }
.release + .release { margin-top: 40px; border-top: 1px solid var(--line); }
.page .release h2 { font-size: 1.4rem; margin: 32px 0 2px; }
.page .released { color: var(--muted); font-size: 15px; margin: 0 0 16px; }

footer { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 24px 24px 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }
footer .copy { margin-right: auto; }
main + footer { margin-top: 0; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding-top: 36px; }
  h1.name { font-size: 3rem; }
  .headline { font-size: 1.35rem; }
  .features { grid-template-columns: 1fr; gap: 26px; }
  .page h1 { font-size: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}