:root {
  --bg: #ffffff;
  --bg-group: #f2f2f7;
  --cell: #ffffff;
  --text: #1c1c1e;
  --secondary: #6c6c70;
  --sep: rgba(60, 60, 67, .22);
  --tint: #0a84ff;
  --tint-text: #0066d6;
  --warn-bg: #fff4e5;
  --warn-text: #7a4300;
  --warn-edge: #ff9f0a;
  --code-bg: #f2f2f7;
  --nav-bg: rgba(255, 255, 255, .78);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF UI Text", "Helvetica Neue", "Segoe UI", Roboto, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-group: #1c1c1e;
    --cell: #1c1c1e;
    --text: #f5f5f7;
    --secondary: #98989f;
    --sep: rgba(84, 84, 88, .6);
    --tint: #0a84ff;
    --tint-text: #4da3ff;
    --warn-bg: #2a1d08;
    --warn-text: #ffd18a;
    --warn-edge: #ff9f0a;
    --code-bg: #1c1c1e;
    --nav-bg: rgba(0, 0, 0, .72);
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 64px; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.47 var(--font); letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--tint-text); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--tint); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--tint); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 20; }
.skip:focus { left: 8px; }

/* nav: blur material like the iPadOS nav bar */
.nav {
  position: sticky; top: 0; z-index: 10; height: 52px;
  background: var(--nav-bg); border-bottom: .5px solid var(--sep);
  -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
}
.nav-in { max-width: 980px; margin: 0 auto; padding: 0 20px; height: 100%; display: flex; align-items: center; gap: 4px; }
.brand { font-weight: 600; color: var(--text); margin-right: auto; font-size: 17px; }
.brand:hover { text-decoration: none; }
.nav a.l { color: var(--text); padding: 10px 10px; font-size: 15px; border-radius: 8px; }
.nav a.l[aria-current="page"] { color: var(--tint-text); font-weight: 600; }
.nav a.l:hover { text-decoration: none; background: var(--bg-group); }

main, .wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
section { padding: 56px 0 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.022em; margin: 0; }
h1 { font-size: clamp(34px, 6vw, 56px); font-weight: 700; }
h2 { font-size: clamp(26px, 4vw, 34px); font-weight: 700; margin-bottom: 14px; }
h3 { font-size: 20px; font-weight: 600; margin: 32px 0 8px; }
p { margin: 0 0 14px; }
.lead { font-size: clamp(19px, 2.4vw, 22px); color: var(--secondary); line-height: 1.4; max-width: 34em; }
.eyebrow { font-size: 13px; text-transform: uppercase; color: var(--secondary); letter-spacing: .02em; margin: 0 0 10px; }
code, kbd, pre { font-family: var(--mono); font-size: .88em; }
code { background: var(--code-bg); padding: .1em .38em; border-radius: 5px; }
pre { background: var(--code-bg); padding: 14px 16px; border-radius: 10px; overflow-x: auto; line-height: 1.5; margin: 0 0 18px; }
pre code { background: none; padding: 0; font-size: 1em; }
table { border-collapse: collapse; width: 100%; margin: 0 0 18px; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: .5px solid var(--sep); vertical-align: top; }
th { color: var(--secondary); font-weight: 600; font-size: 13px; text-transform: uppercase; }
ul, ol { padding-left: 1.3em; margin: 0 0 16px; }
li { margin-bottom: 6px; }

/* hero */
.hero { display: grid; gap: 40px; padding: 48px 0 8px; align-items: center; }
@media (min-width: 820px) { .hero { grid-template-columns: 1.15fr .85fr; padding-top: 80px; } }
.hero .lead { margin: 20px 0 26px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { display: inline-flex; align-items: center; min-height: 44px; padding: 0 22px; border-radius: 999px; font-weight: 600; font-size: 17px; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn.fill { background: var(--tint); color: #fff; }
.btn.ghost { background: var(--bg-group); color: var(--text); }
.device { justify-self: center; width: min(100%, 300px); }
.device img { display: block; width: 100%; height: auto; border-radius: 22px; border: 9px solid #1d1d1f; box-shadow: 0 0 0 1px rgba(128,128,128,.35); background: #000; }
.cap { font-size: 13px; color: var(--secondary); margin-top: 10px; text-align: center; }

/* status callout */
.status { border-left: 4px solid var(--warn-edge); background: var(--warn-bg); color: var(--warn-text); padding: 14px 18px; border-radius: 0 12px 12px 0; margin: 0 0 18px; }
.status strong { color: inherit; }
.status p:last-child { margin: 0; }
.warn { border-left: 4px solid #ff453a; background: var(--warn-bg); color: var(--warn-text); padding: 14px 18px; border-radius: 0 12px 12px 0; margin: 0 0 18px; }
.warn p:last-child, .warn ul:last-child { margin-bottom: 0; }

/* inset grouped list (iOS Settings look) */
.group-h { font-size: 13px; text-transform: uppercase; color: var(--secondary); margin: 28px 16px 7px; }
.group { background: var(--bg-group); border-radius: 10px; overflow: hidden; margin: 0 0 8px; padding: 0; list-style: none; }
@media (prefers-color-scheme: light) { .group { background: var(--bg-group); } }
.group > li, .group > a { display: flex; gap: 12px; align-items: baseline; min-height: 44px; padding: 10px 16px; margin: 0; position: relative; color: var(--text); }
.group > li + li::before, .group > a + a::before { content: ""; position: absolute; top: 0; left: 16px; right: 0; border-top: .5px solid var(--sep); }
.group b { font-weight: 600; flex: 0 0 9.5em; }
.group span { color: var(--secondary); }
@media (max-width: 560px) { .group > li { flex-direction: column; gap: 2px; } .group b { flex: none; } }

/* screenshots strip */
.strip { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 20px 16px; margin: 0 -20px; scrollbar-width: thin; }
.strip figure { margin: 0; flex: 0 0 min(72vw, 260px); scroll-snap-align: start; }
.strip img { display: block; width: 100%; height: auto; border-radius: 14px; border: 6px solid #1d1d1f; background: #000; }
.strip figcaption { font-size: 13px; color: var(--secondary); margin-top: 8px; }

/* docs layout */
.page-h { padding: 48px 0 0; }
.toc { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 15px; margin: 22px 0 0; padding: 0; list-style: none; }
.toc li { margin: 0; }
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps > li { counter-increment: s; position: relative; padding-left: 44px; margin-bottom: 22px; }
.steps > li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; background: var(--tint); color: #fff; font-weight: 600; font-size: 15px; display: grid; place-items: center; }

/* store */
.search { width: 100%; font: inherit; padding: 10px 14px 10px 40px; border-radius: 10px; border: 0; background: var(--bg-group) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%238e8e93' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='7' cy='7' r='5'/%3E%3Cpath d='m11 11 4 4'/%3E%3C/svg%3E") no-repeat 14px center; color: var(--text); min-height: 44px; }
.search::placeholder { color: var(--secondary); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 6px; }
.chip { font: inherit; font-size: 15px; border: 0; border-radius: 999px; padding: 0 16px; min-height: 36px; background: var(--bg-group); color: var(--text); cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--tint); color: #fff; }
.apps { list-style: none; padding: 0; margin: 12px 0 0; background: var(--bg-group); border-radius: 10px; overflow: hidden; }
.app-row { display: flex; align-items: center; gap: 14px; padding: 12px 16px; position: relative; color: var(--text); min-height: 76px; }
.app-row:hover { text-decoration: none; background: rgba(128,128,128,.1); }
.apps li + li .app-row::before { content: ""; position: absolute; top: 0; left: 90px; right: 0; border-top: .5px solid var(--sep); }
.icon { width: 60px; height: 60px; border-radius: 13.5px; background: var(--sep); flex: none; object-fit: cover; box-shadow: 0 0 0 .5px rgba(128,128,128,.4); }
.icon.big { width: 112px; height: 112px; border-radius: 25px; }
.app-row .meta { min-width: 0; flex: 1; }
.app-row .nm { font-weight: 600; display: block; }
.app-row .sm { color: var(--secondary); font-size: 15px; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app-row .vr { color: var(--secondary); font-size: 13px; }
.empty { text-align: center; color: var(--secondary); padding: 48px 16px; background: var(--bg-group); border-radius: 10px; margin-top: 12px; }
.app-head { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; padding-top: 40px; }
.app-head h1 { font-size: clamp(28px, 5vw, 40px); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 22px; margin: 0; }
.kv dt { color: var(--secondary); }
.kv dd { margin: 0; overflow-wrap: anywhere; }

footer { max-width: 980px; margin: 72px auto 0; padding: 22px 20px 48px; border-top: .5px solid var(--sep); color: var(--secondary); font-size: 13px; }
footer a { color: var(--secondary); text-decoration: underline; }
footer p { margin: 0 0 6px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
h1 + .lead { margin-top: 14px; }