:root {
  color-scheme: light;
  --paper: #f6f5f0;
  --surface: #fffefa;
  --ink: #272d28;
  --muted: #60685f;
  --line: #dddfd4;
  --accent: #355c45;
  --wash: #e9eee3;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 6rem; }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.skip-link { position: fixed; top: -5rem; left: 1rem; padding: 1rem; background: var(--surface); z-index: 10; }
.skip-link:focus { top: 1rem; }
.site-header { height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0 2.5rem; border-bottom: 1px solid var(--line); background: var(--paper); position: sticky; top: 0; z-index: 2; }
.brand { display: flex; align-items: center; gap: .8rem; font-weight: 700; letter-spacing: -.04em; font-size: 1.3rem; color: var(--ink); text-decoration: none; }
.brand-mark { display: grid; place-items: center; background: var(--ink); color: var(--paper); width: 2rem; height: 2rem; border-radius: .4rem; font-size: .8rem; letter-spacing: -.04em; }
.brand-context { font-size: .9rem; font-weight: 400; letter-spacing: 0; color: var(--muted); margin-left: .4rem; }
.header-start { font-size: .85rem; font-weight: 600; text-decoration: none; }
.header-start span { margin-left: .5rem; }
.layout { display: grid; grid-template-columns: 15rem minmax(0, 49rem) 12rem; gap: 3rem; max-width: 90rem; margin: 0 auto; padding: 0 2.5rem; }
.sidebar { position: sticky; top: 5rem; height: calc(100dvh - 5rem); overflow-y: auto; padding: 2rem 0; scrollbar-width: thin; }
.nav-group { margin-bottom: 1.6rem; }
.nav-group h2 { font-size: .7rem; text-transform: uppercase; letter-spacing: .11em; color: var(--muted); margin: 0 0 .6rem .7rem; font-weight: 650; }
.nav-group ul, .toc ul { list-style: none; padding: 0; margin: 0; }
.nav-group li { margin: .12rem 0; }
.nav-group a { display: block; padding: .48rem .7rem; border-radius: .4rem; text-decoration: none; font-size: .86rem; line-height: 1.35; color: var(--muted); }
.nav-group a:hover { background: var(--wash); color: var(--ink); }
.nav-group a[aria-current] { background: var(--wash); color: var(--accent); font-weight: 650; }
.mobile-nav { display: none; }
main { min-width: 0; padding: 3.5rem 0 1rem; }
.eyebrow { margin: 0 0 1rem; text-transform: uppercase; letter-spacing: .13em; color: var(--accent); font-size: .7rem; font-weight: 700; }
.prose { font-size: .98rem; line-height: 1.8; overflow-wrap: break-word; }
.prose h1, .not-found h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.2rem, 3.5vw, 3.2rem); line-height: 1.12; letter-spacing: -.045em; font-weight: 400; margin: 0 0 1.6rem; text-wrap: balance; }
.home h1 { font-size: clamp(2.8rem, 4.8vw, 4.5rem); max-width: 12ch; }
.prose h2 { font-size: 1.35rem; line-height: 1.3; letter-spacing: -.025em; margin: 2.7rem 0 1rem; }
.prose h3 { font-size: 1.1rem; margin-top: 1.8rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.2rem; }
.prose > h1 + p { font-size: 1.1rem; color: var(--muted); line-height: 1.75; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li { padding-left: .2rem; margin: .5rem 0; }
.prose strong { font-weight: 650; }
.prose table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; margin: 1.5rem 0 2rem; font-size: .87rem; line-height: 1.65; }
.prose th { text-align: left; background: var(--wash); font-weight: 650; }
.prose th, .prose td { padding: .85rem 1rem; border: 1px solid var(--line); vertical-align: top; min-width: 9rem; }
.prose td { background: var(--surface); }
.prose code { font-family: "SFMono-Regular", Consolas, monospace; font-size: .83em; padding: .15em .35em; border-radius: .25rem; background: var(--wash); overflow-wrap: anywhere; }
.prose pre { background: #242e28; color: #f0f2e9; padding: 1.2rem 1.4rem; border-radius: .65rem; overflow-x: auto; font-size: .87rem; line-height: 1.65; }
.prose pre code { color: inherit; padding: 0; background: none; overflow-wrap: normal; }
.prose blockquote { border-left: 3px solid var(--accent); padding: .5rem 1.2rem; margin: 1.5rem 0; color: var(--muted); }
.toc { position: sticky; top: 5rem; align-self: start; padding-top: 3.5rem; font-size: .75rem; }
.toc > p { font-weight: 650; margin: 0 0 1rem; }
.toc li { margin: .8rem 0; line-height: 1.5; }
.toc a { text-decoration: none; color: var(--muted); }
.toc a:hover { color: var(--accent); }
.page-navigation { display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1.4rem; }
.page-navigation a { display: flex; flex-direction: column; text-decoration: none; font-size: .9rem; font-weight: 600; }
.page-navigation span { color: var(--muted); font-size: .7rem; font-weight: 400; margin-bottom: .4rem; }
footer { margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .7rem; line-height: 1.6; }
.not-found { max-width: 45rem; padding: 5rem 2rem; margin: 0 auto; }
@media (min-width: 1600px) { .layout { gap: 4rem; } }
@media (max-width: 1250px) { .layout { grid-template-columns: 14rem minmax(0, 1fr); gap: 2.5rem; max-width: 72rem; } .toc { display: none; } }
@media (max-width: 760px) {
  .site-header { height: 4.5rem; padding: 0 1.2rem; }
  .brand-context { display: none; }
  .layout { display: block; padding: 0 1.2rem; }
  .sidebar { position: static; height: auto; padding: 1rem 0 0; border-bottom: 1px solid var(--line); }
  .desktop-nav { display: none; }
  .mobile-nav { display: block; padding-bottom: 1rem; }
  .mobile-nav summary { cursor: pointer; font-size: .85rem; color: var(--accent); font-weight: 600; }
  .mobile-nav[open] summary { margin-bottom: 1.5rem; }
  main { padding-top: 2rem; }
  .prose { font-size: .95rem; }
  .prose pre { margin-left: -.2rem; margin-right: -.2rem; padding: 1rem; }
  .home h1 { font-size: 3.2rem; }
}
@media print {
  .site-header, .sidebar, .toc, .page-navigation, footer, .skip-link { display: none; }
  .layout { display: block; padding: 0; }
  main { padding: 0; }
  .prose table { display: table; font-size: .75rem; }
  .prose pre { white-space: pre-wrap; color: black; background: none; border: 1px solid var(--line); }
}