:root {
  color-scheme: dark light;
  --bg: #0b0f14;
  --panel: #121821;
  --border: #22303d;
  --text: #e6edf3;
  --muted: #9fb0c0;
  --accent: #58d3a4;
  --accent-dim: #1d4d3c;
  --warn: #e2b341;
  --code-bg: #0e141c;
  --radius: 10px;
  --measure: 74ch;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfcfd;
    --panel: #ffffff;
    --border: #d8e0e8;
    --text: #101820;
    --muted: #4d6070;
    --accent: #0f7a5a;
    --accent-dim: #d6f0e7;
    --warn: #8a5a00;
    --code-bg: #f2f5f8;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--panel);
  padding: 0.6rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.site-header__inner,
main,
.site-footer__inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.brand {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand span {
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-left: auto;
  font-size: 0.92rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}

main {
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin: 2.6rem 0 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  margin: 1.6rem 0 0.4rem;
}

p,
li {
  max-width: var(--measure);
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  margin: 0 0 1.75rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.6;
  max-width: var(--measure);
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
}

p code,
li code,
td code,
th code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05em 0.35em;
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 34rem;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
}

th {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.card-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  margin: 1.25rem 0;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 1rem 1.1rem;
}

.card h3 {
  margin: 0 0 0.35rem;
  font-size: 0.98rem;
  font-family: var(--mono);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card a {
  text-decoration: none;
}

.card a:hover h3 {
  text-decoration: underline;
}

.callout {
  border-left: 3px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.85rem 1rem;
  margin: 1.25rem 0;
}

.callout p {
  margin: 0;
  font-size: 0.94rem;
}

.callout--warn {
  border-left-color: var(--warn);
  background: transparent;
}

dl {
  margin: 1rem 0;
}

dt {
  font-family: var(--mono);
  font-size: 0.88rem;
  margin-top: 0.9rem;
}

dd {
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--panel);
  font-size: 0.86rem;
  color: var(--muted);
}

.site-footer__inner {
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.site-footer a {
  color: var(--muted);
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 2.1rem;
  margin-bottom: 1rem;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.15rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.78rem;
  display: grid;
  place-items: center;
}

.toc {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0 2rem;
  font-size: 0.92rem;
}

.toc p {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  columns: 2;
  column-gap: 2rem;
}

.toc li {
  margin: 0.15rem 0;
  break-inside: avoid;
}

@media (max-width: 40rem) {
  .toc ol {
    columns: 1;
  }
}