:root {
  color-scheme: dark;
  --void: #040506;
  --surface: #111214;
  --line: #292b2f;
  --white: #fff;
  --mist: #e6e6e6;
  --ash: #9c9c9d;
  --coral: #ff6363;
  --sky: #63a1ff;
}

* { box-sizing: border-box; }
html { background: var(--void); scroll-behavior: smooth; }
body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 78% 0, rgb(99 161 255 / 10%), transparent 30rem),
    radial-gradient(circle at 14% 5%, rgb(255 99 99 / 8%), transparent 24rem),
    var(--void);
  color: var(--mist);
  font: 16px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--sky); text-underline-offset: .2em; }
a:hover { color: var(--white); }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 3; padding: .7rem 1rem; background: var(--white); color: var(--void); }
.skip-link:focus { top: 1rem; }

nav {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 1px solid rgb(255 255 255 / 9%);
  background: rgb(4 5 6 / 86%);
  backdrop-filter: blur(20px);
}
.nav-inner, main, footer { width: min(calc(100% - 40px), 820px); margin-inline: auto; }
.nav-inner { display: flex; min-height: 64px; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--white); font-weight: 700; text-decoration: none; }
.mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 8px; background: var(--coral); color: #2c1010; font-size: 18px; }
.nav-links { display: flex; gap: 1rem; }
.nav-links a { color: var(--ash); font-size: .86rem; text-decoration: none; }

main { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.eyebrow { margin: 0 0 .8rem; color: var(--coral); font-size: .76rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2 { color: var(--white); line-height: 1.15; letter-spacing: -.035em; }
h1 { max-width: 720px; margin: 0; font-size: clamp(2.7rem, 8vw, 5.2rem); }
h2 { margin: 2.8rem 0 .7rem; font-size: 1.35rem; }
.summary { max-width: 720px; margin: 1.25rem 0 0; color: var(--ash); font-size: 1.08rem; }
.updated { margin: 1.25rem 0 0; color: var(--ash); font-size: .84rem; }
.callout { margin: 2rem 0; padding: 1rem 1.1rem; border: 1px solid var(--line); border-left: 3px solid var(--coral); border-radius: .65rem; background: rgb(255 255 255 / 3%); }
.callout p { margin: 0; }
p, li { max-width: 75ch; }
li + li { margin-top: .45rem; }
code { padding: .12rem .32rem; border: 1px solid var(--line); border-radius: .3rem; background: #090a0c; color: var(--white); }

.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0; }
.button { display: inline-flex; min-height: 44px; align-items: center; padding: 0 1rem; border: 1px solid var(--line); border-radius: .5rem; color: var(--white); font-weight: 700; text-decoration: none; }
.button-primary { border-color: var(--white); background: var(--white); color: var(--void); }
.steps { padding: 0; list-style: none; counter-reset: step; }
.steps li { position: relative; padding: 1rem 0 1rem 3rem; border-bottom: 1px solid var(--line); counter-increment: step; }
.steps li::before { position: absolute; left: 0; display: grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--coral); content: counter(step); font-size: .78rem; font-weight: 800; }

footer { display: flex; justify-content: space-between; gap: 1rem; padding-block: 2rem 3rem; border-top: 1px solid var(--line); color: var(--ash); font-size: .82rem; }
footer p { margin: 0; }
footer div { display: flex; flex-wrap: wrap; gap: .8rem; }
footer a { color: var(--ash); }

@media (max-width: 620px) {
  .nav-links a:not(:last-child) { display: none; }
  footer { flex-direction: column; }
}

@media print {
  :root { color-scheme: light; --void: #fff; --surface: #fff; --line: #ccc; --white: #111; --mist: #222; --ash: #555; }
  body { background: #fff; }
  nav, .actions { display: none; }
  main { padding-top: 1rem; }
}