:root {
  --paper: #f6f8f4;
  --ink: #1d2621;
  --soft: #55625a;
  --rule: #d6ddd3;
  --leaf: #1f7a4d;
  --leaf-ink: #ffffff;
  --box: #e9efe6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #111613;
    --ink: #e2e8e3;
    --soft: #9ba9a1;
    --rule: #29332d;
    --leaf: #5cc68d;
    --leaf-ink: #0d140f;
    --box: #19211c;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.7 Charter, "Bitstream Charter", "Iowan Old Style", Georgia, Cambria, serif;
}

.wrap { max-width: 40rem; margin: 0 auto; padding: 0 16px; }

.top { border-top: 5px solid var(--leaf); border-bottom: 1px solid var(--rule); }
.top .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: .5rem 1.25rem; padding-top: .9rem; padding-bottom: .9rem;
}
.brand {
  display: inline-flex; align-items: center; gap: .55rem;
  color: var(--ink); text-decoration: none;
  font: 700 1.25rem/1 "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; letter-spacing: .01em;
}
.brand small { font-weight: 400; font-size: .8rem; color: var(--soft); letter-spacing: 0; }
.menu { display: flex; gap: 1rem; font: 500 .95rem/1 "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; }
.menu a { color: var(--soft); text-decoration: none; padding: .35rem 0; border-bottom: 2px solid transparent; }
.menu a:hover, .menu a[aria-current] { color: var(--ink); border-bottom-color: var(--leaf); }

main { padding-top: 2.2rem; padding-bottom: 3rem; }

h1, h2 { font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; line-height: 1.25; }
h1 { font-size: 1.9rem; margin: 0 0 1rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; margin: 2.2rem 0 .6rem; }
.lead { font-size: 1.08rem; color: var(--soft); margin: 0 0 2.2rem; }

a { color: var(--leaf); text-underline-offset: .15em; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { border-left: 3px solid var(--rule); padding: .2rem 0 .2rem 1.1rem; margin: 0 0 1.8rem; }
.list li:hover { border-left-color: var(--leaf); }
.list h2 { margin: 0 0 .35rem; font-size: 1.15rem; }
.list h2 a { color: var(--ink); text-decoration: none; }
.list h2 a:hover { color: var(--leaf); }
.list p { margin: 0 0 .35rem; color: var(--soft); }
.list .more { font-size: .9rem; font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; }

.example { background: var(--box); border-radius: 6px; padding: .9rem 1.1rem; margin: 1.3rem 0; }
.example p { margin: 0; }

table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.4rem; font-size: .92rem; display: block; overflow-x: auto; }
th, td { text-align: left; padding: .45rem .7rem .45rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; font-weight: 600; color: var(--soft); white-space: nowrap; }

ul { padding-left: 1.3rem; }
li { margin: .25rem 0; }

.back { margin-top: 2.6rem; font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif; font-size: .95rem; }

.foot { border-top: 1px solid var(--rule); }
.foot .wrap {
  padding-top: 1.1rem; padding-bottom: 2rem; display: flex; flex-wrap: wrap; gap: .4rem 1rem; justify-content: space-between;
  color: var(--soft); font: .85rem/1.5 "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;
}
.foot a { color: var(--soft); }