*, *::before, *::after { box-sizing: border-box; }

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-code: #f1f3f5;
  --fg: #1a1d21;
  --fg-muted: #5c6570;
  --fg-faint: #8b949e;
  --accent: #b4530a;
  --accent-hover: #8c3f06;
  --border: #e3e6ea;
  --border-strong: #cbd1d8;
  --quote-bg: #fdf7ee;
  --quote-border: #e6a94a;
  --max: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171a;
    --bg-soft: #1c2024;
    --bg-code: #23282d;
    --fg: #e6e9ec;
    --fg-muted: #a3adb8;
    --fg-faint: #78828d;
    --accent: #ffab6b;
    --accent-hover: #ffc491;
    --border: #2b3137;
    --border-strong: #3b434b;
    --quote-bg: #211d17;
    --quote-border: #a97a2e;
  }
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Helvetica, Arial, "Noto Sans", sans-serif;
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--bg);
  color: var(--fg);
  padding: .6rem 1rem;
  z-index: 10;
}
.skip:focus { left: .5rem; top: .5rem; outline: 2px solid var(--accent); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  align-items: baseline;
  padding-top: .9rem;
  padding-bottom: .9rem;
}
.brand {
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--fg);
  text-decoration: none;
  font-size: 1.02rem;
  white-space: nowrap;
}
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  font-size: .87rem;
}
.site-header nav a { color: var(--fg-muted); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); text-decoration: underline; }
.site-header nav a[aria-current="page"] { color: var(--fg); font-weight: 600; }

/* ---------- content ---------- */

main { padding: 2.5rem 0 3rem; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  letter-spacing: -.015em;
  margin: 2.4em 0 .7em;
  scroll-margin-top: 1.5rem;
}
h1 {
  font-size: 2rem;
  margin-top: 0;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}
h2 { font-size: 1.4rem; }
h3 { font-size: 1.13rem; }
h4, h5, h6 { font-size: 1rem; }

h1 + p, h2 + p, h3 + p { margin-top: 0; }

p, ul, ol, blockquote, .table-wrap { margin: 0 0 1.15em; }

ul, ol { padding-left: 1.4rem; }
li { margin-bottom: .4em; }
li > ul, li > ol { margin-top: .4em; }

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

strong { font-weight: 650; }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.2em 0;
}

blockquote {
  margin-left: 0;
  margin-right: 0;
  padding: .9rem 1.1rem;
  background: var(--quote-bg);
  border-left: 3px solid var(--quote-border);
  border-radius: 0 4px 4px 0;
}
blockquote > *:last-child { margin-bottom: 0; }

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: .88em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .1em .35em;
}

/* ---------- tables ---------- */

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-radius: 6px;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: .88rem;
  line-height: 1.55;
}
th, td {
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  min-width: 9rem;
}
th:last-child, td:last-child { border-right: 0; }
tbody tr:last-child td { border-bottom: 0; }
thead th {
  background: var(--bg-soft);
  font-weight: 650;
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
}
tbody tr:nth-child(even) { background: var(--bg-soft); }

/* ---------- anchors ---------- */

.anchor {
  color: var(--fg-faint);
  text-decoration: none;
  font-weight: 400;
  opacity: 0;
  padding-left: .25em;
}
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor,
h4:hover .anchor, h5:hover .anchor, h6:hover .anchor,
.anchor:focus { opacity: 1; }
:target { scroll-margin-top: 1.5rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 1.75rem 0 2.25rem;
  font-size: .87rem;
  color: var(--fg-muted);
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  margin-bottom: .9rem;
}
.site-footer nav a { color: var(--fg-muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--accent); text-decoration: underline; }
.site-footer p { margin: 0; }

/* ---------- home ---------- */

.home {
  padding: 4.5rem 0 3rem;
}
.home h1 { border: 0; padding: 0; font-size: 2.4rem; margin-bottom: .5rem; }
.home .lede { font-size: 1.1rem; color: var(--fg-muted); margin-bottom: 2.5rem; }
.home h2 { font-size: 1rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--fg-muted); margin: 2.5rem 0 .9rem; }
.doclist { list-style: none; padding: 0; margin: 0; }
.doclist li { margin: 0; border-bottom: 1px solid var(--border); }
.doclist li:first-child { border-top: 1px solid var(--border); }
.doclist a {
  display: block;
  padding: .85rem .25rem;
  text-decoration: none;
  color: var(--fg);
  font-weight: 600;
}
.doclist a:hover { color: var(--accent); }
.doclist .desc {
  display: block;
  font-weight: 400;
  font-size: .89rem;
  color: var(--fg-muted);
  margin-top: .15rem;
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  h1 { font-size: 1.65rem; }
  .home h1 { font-size: 1.9rem; }
  h2 { font-size: 1.25rem; }
  main { padding: 2rem 0 2.5rem; }
  .home { padding: 3rem 0 2rem; }
  .anchor { opacity: .45; }
}

@media print {
  .site-header nav, .anchor, .skip { display: none; }
  body { font-size: 11pt; color: #000; background: #fff; }
  a { color: #000; }
}