:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --fg: #1d1d1f;
  --muted: #5c5c63;
  --line: #d9d9de;
  --accent: #0a62c9;
  --accent-fg: #ffffff;
  --code-bg: #f0f0f3;
  --warn-bg: #fff6e0;
  --warn-line: #e3c36a;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-alt: #1c1c1e;
    --fg: #f5f5f7;
    --muted: #a1a1a8;
    --line: #38383c;
    --accent: #4da3ff;
    --accent-fg: #00142e;
    --code-bg: #2a2a2d;
    --warn-bg: #2d2610;
    --warn-line: #7a6420;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0;
  font: 1.0625rem/1.65 var(--font);
  color: var(--fg);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
main { flex: 1; }
.wrap { width: 100%; max-width: 62rem; margin: 0 auto; padding: 0 1.25rem; }
.prose { max-width: 44rem; }
a { color: var(--accent); text-underline-offset: 0.2em; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }

header.site { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 5; }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .25rem 1.5rem; padding-top: .6rem; padding-bottom: .6rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 650; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; display: block; }
nav.main ul { list-style: none; display: flex; flex-wrap: wrap; gap: .1rem 1.1rem; margin: 0; padding: 0; }
nav.main a { color: var(--muted); text-decoration: none; font-size: .95rem; padding: .35rem 0; display: inline-block; }
nav.main a:hover, nav.main a[aria-current="page"] { color: var(--fg); }
nav.main a[aria-current="page"] { font-weight: 600; }

h1 { font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.12; letter-spacing: -.02em; margin: 0 0 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); line-height: 1.2; letter-spacing: -.01em; margin: 2.8rem 0 .8rem; }
h3 { font-size: 1.15rem; margin: 1.8rem 0 .4rem; }
p, ul, ol, dl { margin: 0 0 1rem; }
li { margin-bottom: .35rem; }
.lead { font-size: 1.25rem; color: var(--muted); max-width: 40rem; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: .9rem; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 .6rem; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }

.hero { padding-block: 4rem 3rem; text-align: left; }
.hero .appicon { width: 96px; height: 96px; border-radius: 22px; margin-bottom: 1.4rem; box-shadow: 0 6px 24px rgba(0,0,0,.18); display: block; }
.cta { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; margin-top: 1.6rem; }
.btn { display: inline-block; padding: .7rem 1.3rem; border-radius: 999px; background: var(--accent); color: var(--accent-fg); font-weight: 600; text-decoration: none; }
.btn.secondary { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.badge-soon { display: inline-block; padding: .7rem 1.3rem; border-radius: 999px; background: var(--bg-alt); color: var(--muted); font-weight: 600; border: 1px solid var(--line); }

.band { background: var(--bg-alt); padding-block: 1rem 3rem; margin-top: 2rem; }
.page { padding-block: 3rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin: 1.2rem 0; padding: 0; list-style: none; }
.card { background: var(--bg-alt); border-radius: var(--radius); padding: 1.2rem 1.3rem; margin: 0; }
.band .card { background: var(--bg); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

ol.steps { list-style: none; padding: 0; counter-reset: s; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
ol.steps li { counter-increment: s; background: var(--bg-alt); border-radius: var(--radius); padding: 1.2rem 1.3rem; margin: 0; }
ol.steps li::before { content: counter(s); display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 700; margin-bottom: .6rem; }
ol.steps strong { display: block; margin-bottom: .2rem; }

code { font: .9em var(--mono); background: var(--code-bg); padding: .12em .38em; border-radius: 6px; overflow-wrap: anywhere; }
pre { position: relative; background: var(--code-bg); border-radius: 10px; padding: .9rem 1rem; overflow-x: auto; margin: 0 0 1rem; line-height: 1.5; }
pre code { background: none; padding: 0; border-radius: 0; font-size: .88rem; overflow-wrap: normal; white-space: pre; }
pre.cmd { padding-right: 4.5rem; }
button.copy { position: absolute; top: .5rem; right: .5rem; font: .8rem var(--font); padding: .25rem .65rem; border-radius: 6px; border: 1px solid var(--line); background: var(--bg); color: var(--fg); cursor: pointer; }
button.copy:hover { border-color: var(--accent); }

.note { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.4rem 0; }
.note p:last-child { margin-bottom: 0; }
.toc { background: var(--bg-alt); border-radius: var(--radius); padding: .8rem 1.3rem; margin: 1.5rem 0; }
.toc ul { margin: 0; padding-left: 1.1rem; }
.diagram { background: var(--bg-alt); border-radius: var(--radius); padding: 1rem 1.2rem; overflow-x: auto; margin: 1.5rem 0; }
.diagram pre { background: none; padding: 0; margin: 0; }

details { border-top: 1px solid var(--line); padding: .9rem 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: .6rem; }

table { border-collapse: collapse; width: 100%; margin: 0 0 1.2rem; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.scroll { overflow-x: auto; }

footer.site { border-top: 1px solid var(--line); background: var(--bg-alt); padding-block: 2rem 2.2rem; font-size: .92rem; color: var(--muted); }
footer.site ul { list-style: none; display: flex; flex-wrap: wrap; gap: .3rem 1.3rem; padding: 0; margin: 0 0 1rem; }
footer.site a { color: var(--fg); }
footer.site p { margin-bottom: .6rem; max-width: 52rem; }

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .hero { padding-block: 2.5rem 2rem; }
  header.site { position: static; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }