:root {
  color-scheme: dark;
  --bg: #1a1a1a;
  --panel: #202020;
  --text: #ddd;
  --muted: #999;
  --line: #444;
  --accent: #e6b84a;
  --visited: #b58cc7;
  --sidebar: 19rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a:link { color: var(--accent); }
a:visited { color: var(--visited); }
a:hover, a:focus { color: #fff; }
button, input { font: inherit; }

/* Landing page */
:where(.landing-page, body:not(.reading-list-page)) header,
:where(.landing-page, body:not(.reading-list-page)) main,
:where(.landing-page, body:not(.reading-list-page)) footer { width: min(900px, calc(100% - 40px)); margin-right: auto; margin-left: auto; }
:where(.landing-page, body:not(.reading-list-page)) header { padding: 2rem 0 1.5rem; border-bottom: 1px solid var(--line); }
:where(.landing-page, body:not(.reading-list-page)) .banner { display: block; width: 100%; height: auto; margin-bottom: 1.5rem; }
:where(.landing-page, body:not(.reading-list-page)) .identity h1 { margin: 0; color: #fff; font-size: 1.5rem; line-height: 1.2; }
:where(.landing-page, body:not(.reading-list-page)) .headerpar { margin: .5rem 0 0; color: #aaa; line-height: 1.4; }
:where(.landing-page, body:not(.reading-list-page)) section { margin: 2.5rem 0; }
:where(.landing-page, body:not(.reading-list-page)) h2 { margin: 0 0 .75rem; color: #fff; font-size: 1rem; font-weight: 600; letter-spacing: .04em; }
:where(.landing-page, body:not(.reading-list-page)) p { margin: .75rem 0; }
:where(.landing-page, body:not(.reading-list-page)) ul { margin: .75rem 0; padding-left: 1.25rem; }
:where(.landing-page, body:not(.reading-list-page)) li { margin: .35rem 0; }
:where(.landing-page, body:not(.reading-list-page)) footer, .reading-list-page footer { margin-top: 4rem; border-top: 1px solid var(--line); color: #777; font-size: .75rem; text-align: center; }
:where(.landing-page, body:not(.reading-list-page)) footer { padding: 1rem 0 2rem; }

/* Reading list */
.reading-list-page .skip-link { position: fixed; top: -5rem; left: 1rem; z-index: 10; padding: .5rem .75rem; background: #fff; color: #111 !important; }
.reading-list-page .skip-link:focus { top: 1rem; }
.reading-list-page .layout { display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr); min-height: 100vh; }
.reading-list-page aside { position: sticky; top: 0; height: 100vh; overflow: auto; padding: 1.5rem; border-right: 1px solid var(--line); background: #171717; }
.reading-list-page .site-link { display: inline-block; margin-bottom: 1.5rem; font-size: .85rem; text-decoration: none; }
.reading-list-page .site-link span { margin-right: .3rem; }
.reading-list-page label { display: block; margin-bottom: .4rem; color: #fff; font-size: .8rem; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; }
.reading-list-page .search-wrap { position: relative; }
.reading-list-page #search { width: 100%; padding: .65rem 2.2rem .65rem .7rem; border: 1px solid #555; border-radius: 0; outline: none; background: #222; color: #fff; }
.reading-list-page #search:focus { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.reading-list-page #clear { position: absolute; right: .35rem; bottom: .34rem; display: none; width: 1.9rem; height: 1.9rem; border: 0; background: transparent; color: #aaa; cursor: pointer; }
.reading-list-page .results { min-height: 1.5rem; margin: .45rem 0 1.25rem; color: var(--muted); font-size: .78rem; }
.reading-list-page nav ul { margin: 0; padding: 0; list-style: none; }
.reading-list-page nav > ul > li { margin: 0 0 .75rem; }
.reading-list-page nav a { display: block; padding: .18rem 0 .18rem .55rem; border-left: 2px solid transparent; color: #bbb !important; font-size: .83rem; line-height: 1.35; text-decoration: none; }
.reading-list-page nav > ul > li > a { color: #eee !important; font-weight: 600; }
.reading-list-page nav li ul { margin: .25rem 0 0 .35rem; }
.reading-list-page nav li ul a { color: #888 !important; font-size: .76rem; }
.reading-list-page nav a:hover, .reading-list-page nav a:focus, .reading-list-page nav a.active { border-color: var(--accent); color: #fff !important; }
.reading-list-page main { width: min(900px, calc(100% - 64px)); margin: 0 auto; padding: 3rem 0 5rem; }
.reading-list-page header { padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
.reading-list-page h1 { margin: 0; color: #fff; font-size: clamp(1.65rem, 4vw, 2.35rem); line-height: 1.18; }
.reading-list-page .dek { max-width: 42rem; margin: .8rem 0 0; color: #aaa; }
.reading-list-page .mobile-toggle { display: none; }
.reading-list-page .topic { margin: 3.5rem 0; }
.reading-list-page h2 { margin: 0 0 1rem; padding-bottom: .65rem; border-bottom: 1px solid var(--line); color: #fff; font-size: 1.25rem; line-height: 1.3; }
.reading-list-page .reading-group { margin: 2rem 0; }
.reading-list-page h3 { margin: 0 0 .7rem; color: #fff; font-size: .95rem; letter-spacing: .025em; }
.reading-list-page ol { margin: 0; padding: 0; list-style: none; counter-reset: refs; }
.reading-list-page .reference { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1.25rem; align-items: start; padding: 1rem 0 1rem 2rem; border-top: 1px solid #333; counter-increment: refs; }
.reading-list-page .reference::before { position: absolute; top: 1rem; left: 0; color: #777; content: counter(refs) "."; font-variant-numeric: tabular-nums; }
.reading-list-page .reference:last-child { border-bottom: 1px solid #333; }
.reading-list-page h4 { margin: 0; color: #e8e8e8; font-size: .96rem; font-weight: 600; line-height: 1.45; }
.reading-list-page .authors, .reading-list-page .meta { margin: .25rem 0 0; color: #aaa; font-size: .82rem; line-height: 1.4; }
.reading-list-page .meta { color: #777; }
.reading-list-page .kind { display: inline-block; margin-top: .45rem; padding: .08rem .35rem; border: 1px solid #4a4a4a; color: #888; font-size: .68rem; line-height: 1.35; letter-spacing: .035em; text-transform: uppercase; }
.reading-list-page .source, .reading-list-page .no-source { white-space: nowrap; font-size: .75rem; }
.reading-list-page .source { padding: .3rem .5rem; border: 1px solid #685724; text-decoration: none; }
.reading-list-page .source:hover, .reading-list-page .source:focus { border-color: #fff; }
.reading-list-page .no-source { padding: .3rem 0; color: #666; }
.reading-list-page .empty { display: none; margin: 4rem 0; color: #aaa; }
.reading-list-page footer { padding-top: 1rem; }
.reading-list-page [hidden] { display: none !important; }

@media (max-width: 800px) {
  .reading-list-page .layout { display: block; }
  .reading-list-page aside { position: relative; height: auto; padding: 1rem 1.25rem; border: 0; border-bottom: 1px solid var(--line); }
  .reading-list-page .site-link { margin: 0; }
  .reading-list-page .mobile-toggle { display: block; float: right; padding: .25rem .55rem; border: 1px solid #555; background: #222; color: #ddd; cursor: pointer; }
  .reading-list-page .sidebar-content { display: none; clear: both; padding-top: 1rem; }
  .reading-list-page aside.open .sidebar-content { display: block; }
  .reading-list-page main { width: min(100% - 30px, 900px); padding: 2rem 0 4rem; }
  .reading-list-page .reference { grid-template-columns: 1fr; gap: .65rem; }
  .reading-list-page .source, .reading-list-page .no-source { justify-self: start; }
}

@media (max-width: 600px) {
  :where(.landing-page, body:not(.reading-list-page)) header,
  :where(.landing-page, body:not(.reading-list-page)) main,
  :where(.landing-page, body:not(.reading-list-page)) footer { width: min(100% - 30px, 900px); }
  :where(.landing-page, body:not(.reading-list-page)) header { padding: 1.5rem 0; }
  :where(.landing-page, body:not(.reading-list-page)) .banner { margin-bottom: 1.25rem; }
  :where(.landing-page, body:not(.reading-list-page)) .identity h1 { font-size: 1.25rem; }
  :where(.landing-page, body:not(.reading-list-page)) .headerpar { font-size: .9rem; }
  :where(.landing-page, body:not(.reading-list-page)) section { margin: 2rem 0; }
}