:root {
  color-scheme: dark;
  --background: #07111f;
  --surface: #0d1b2e;
  --surface-strong: #13243a;
  --border: #27405f;
  --text: #edf5ff;
  --muted: #a9bad0;
  --accent: #66d2ff;
  --accent-strong: #9ee6ff;
  --code: #06101d;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 0; background: var(--background); color: var(--text); }
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { color: var(--accent-strong); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
code { overflow-wrap: anywhere; }

.skip-link { position: fixed; z-index: 20; top: .75rem; left: .75rem; transform: translateY(-180%); padding: .7rem 1rem; border-radius: .4rem; background: var(--text); color: var(--background); }
.skip-link:focus { transform: translateY(0); }
.site-header, main, .site-footer { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; min-width: 0; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid var(--border); }
.wordmark { color: var(--text); font-weight: 800; letter-spacing: -.03em; text-decoration: none; }
.top-nav { display: flex; flex-wrap: wrap; gap: .4rem 1rem; }
.top-nav a { color: var(--muted); font-size: .92rem; text-decoration: none; }

main { padding: 3.5rem 0 5rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(250px, .75fr); gap: 2rem; align-items: end; }
.hero-copy, .package-facts, .section, .code-grid > *, .feature-grid > * { min-width: 0; }
.eyebrow { margin: 0 0 .75rem; color: var(--accent); font-size: .78rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
h1 { margin: 0; max-width: 100%; font-size: clamp(2.4rem, 7.7vw, 5.7rem); line-height: .9; letter-spacing: -.065em; overflow-wrap: anywhere; }
h1 span { color: var(--accent-strong); }
h2 { margin: 0; font-size: clamp(1.75rem, 4vw, 2.7rem); line-height: 1.08; letter-spacing: -.035em; }
h3 { margin: 0 0 .65rem; font-size: 1.05rem; }
p, li { color: var(--muted); font-size: 1rem; line-height: 1.68; }
.lede { max-width: 720px; margin: 1.5rem 0; font-size: clamp(1.05rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.button { display: inline-flex; align-items: center; min-height: 2.7rem; padding: .65rem 1rem; border: 1px solid var(--border); border-radius: .55rem; color: var(--text); text-decoration: none; }
.button.primary { border-color: var(--accent); background: var(--accent); color: #001725; font-weight: 750; }

.package-facts { padding: 1rem 1.15rem; border: 1px solid var(--border); border-radius: .8rem; background: linear-gradient(160deg, var(--surface-strong), var(--surface)); }
.package-facts dl { margin: 0; }
.package-facts dl > div { display: flex; justify-content: space-between; gap: 1rem; padding: .65rem 0; border-bottom: 1px solid var(--border); }
.package-facts dl > div:last-child { border-bottom: 0; }
.package-facts dt { color: var(--muted); }
.package-facts dd { margin: 0; max-width: 58%; text-align: right; font-weight: 700; overflow-wrap: anywhere; }

.section { padding: 4.5rem 0 0; }
.section-heading { display: grid; grid-template-columns: minmax(140px, .35fr) minmax(0, 1fr); gap: 1.25rem; align-items: start; margin-bottom: 1.5rem; }
.section-heading .eyebrow { margin-top: .45rem; }
.code-card { position: relative; min-width: 0; margin: 1.2rem 0; border: 1px solid var(--border); border-radius: .7rem; background: var(--code); }
.code-card button { position: absolute; top: .65rem; right: .65rem; padding: .38rem .65rem; border: 1px solid var(--border); border-radius: .4rem; background: var(--surface); color: var(--text); cursor: pointer; }
pre { max-width: 100%; margin: 0; padding: 1.25rem; overflow-x: auto; color: #d8f3ff; font-size: .9rem; line-height: 1.6; }
.code-grid, .feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.code-grid > *, .feature-grid > * { padding: 1rem; border: 1px solid var(--border); border-radius: .7rem; background: var(--surface); }
.code-grid pre { padding: 0; }
.callout { padding: 1rem 1.1rem; border-left: 4px solid var(--accent); background: var(--surface); }

.table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: .7rem; }
table { width: 100%; min-width: 680px; border-collapse: collapse; background: var(--surface); }
caption { padding: .85rem 1rem; color: var(--muted); text-align: left; }
th, td { padding: .8rem 1rem; border-top: 1px solid var(--border); text-align: left; vertical-align: top; }
thead th { color: var(--accent-strong); }
tbody th { white-space: nowrap; }
.check-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem 1.5rem; padding-left: 1.25rem; }
.attribution { margin-top: 4.5rem; padding: 1.3rem; border: 1px solid var(--border); border-radius: .7rem; background: var(--surface); }
.attribution h2 { font-size: 1.35rem; }

.site-footer { padding: 1.5rem 0 3rem; border-top: 1px solid var(--border); }
.site-footer p { margin: .55rem 0 0; font-size: .9rem; }
.copy-status { min-height: 1.5em; color: var(--accent-strong); }

@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  main { padding-top: 2.5rem; }
  .hero-grid, .section-heading, .code-grid, .feature-grid, .check-list { grid-template-columns: minmax(0, 1fr); }
  .hero-grid { gap: 1.4rem; }
  .section { padding-top: 3.5rem; }
  .section-heading { gap: .2rem; }
  .section-heading .eyebrow { margin-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
  :root { color-scheme: light; }
  body { background: white; color: black; }
  .site-header, .actions, .code-card button, .site-footer { display: none; }
  main { width: 100%; padding: 0; }
  p, li { color: #222; }
  .package-facts, .code-grid > *, .feature-grid > *, .code-card, .table-wrap, .attribution { border-color: #888; background: white; }
}