:root {
  --paper: #F4F2EC;
  --sheet: #FBFAF6;
  --rule: #D8D3C8;
  --rule-strong: #A9A397;
  --ink: #1D1F21;
  --ink-2: #55585B;
  --ink-3: #8C8E8F;
  --accent: #E8641B;
  --accent-ink: #B44A0E;
  --cold: #2F6690;
  --cold-soft: #93B5CC;
  --warn: #A8322A;
  --ramp: linear-gradient(90deg, #0E1116, #1E2A45, #2D4B6E, #4A7088, #7E9293, #B99A74, #E3A35C, #F3C47E, #F8E6B8);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
  --paper: #17191B;
  --sheet: #1F2225;
  --rule: #2F3337;
  --rule-strong: #4A4F54;
  --ink: #E8E5DD;
  --ink-2: #A7A9AA;
  --ink-3: #73777A;
  --accent: #F07A35;
  --accent-ink: #F59A63;
  --cold: #6FA3C8;
  --cold-soft: #3E5F77;
  --warn: #E06C5F;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #17191B;
  --sheet: #1F2225;
  --rule: #2F3337;
  --rule-strong: #4A4F54;
  --ink: #E8E5DD;
  --ink-2: #A7A9AA;
  --ink-3: #73777A;
  --accent: #F07A35;
  --accent-ink: #F59A63;
  --cold: #6FA3C8;
  --cold-soft: #3E5F77;
  --warn: #E06C5F;
  color-scheme: dark;
}
/* ArtemisThermalBase documentation. Colour tokens are prepended at build time
   from artemis_thermal/style.py, so the site matches the app and the figures. */

@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-Italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-SemiBold.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/IBMPlexMono-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/IBMPlexMono-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --sans: "Plex Sans", "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Plex Mono", "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --measure: 70ch;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --gutter: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.65 var(--sans);
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration-color: var(--rule-strong); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-ink); text-decoration-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: var(--gutter); top: 8px; background: var(--ink); color: var(--paper); padding: 6px 10px; z-index: 30; }

/* ---- top bar -------------------------------------------------------- */
.bar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px;
  height: 52px; padding: 0 var(--gutter);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand .mark { display: block; }
:root[data-theme="dark"] .brand .mark { filter: invert(0.92) hue-rotate(180deg); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .brand .mark { filter: invert(0.92) hue-rotate(180deg); } }
.brand .name { font-weight: 500; letter-spacing: 0.01em; }
.brand .ver { font: 400 12px var(--mono); color: var(--ink-3); }
.tools { margin-left: auto; display: flex; align-items: center; gap: 18px; font-size: 14px; color: var(--ink-2); }
.tools a { text-decoration: none; }
button {
  font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer;
}
.tools button:hover { color: var(--accent-ink); }
kbd {
  font: 400 11px var(--mono); color: var(--ink-3);
  border: 1px solid var(--rule); padding: 0 4px; margin-left: 4px;
}
.menu { display: none; font-size: 14px; color: var(--ink-2); }

/* ---- frame ---------------------------------------------------------- */
.frame {
  display: grid;
  grid-template-columns: 228px minmax(0, 1fr) 210px;
  max-width: 1320px; margin: 0 auto;
}
.nav, .toc { position: sticky; top: 52px; align-self: start; max-height: calc(100vh - 52px); overflow-y: auto; padding: 34px 0 40px; }
.nav { border-right: 1px solid var(--rule); }
.nav ol, .toc ol { list-style: none; margin: 0; padding: 0; }
.nav li a {
  display: flex; gap: 12px; padding: 6px 20px 6px 22px;
  text-decoration: none; color: var(--ink-2); font-size: 15px;
  border-left: 2px solid transparent;
}
.nav li a:hover { color: var(--ink); }
.nav li.here a { color: var(--ink); font-weight: 500; border-left-color: var(--accent); }
.nav .num { font: 400 12.5px/1.9 var(--mono); color: var(--ink-3); min-width: 1.6em; }
.nav-head {
  margin: 26px 22px 8px; font-size: 11.5px; font-weight: 500; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-ink);
}
.nav .adrs a { font-size: 13.5px; padding-left: 22px; }
.toc { padding-left: 28px; }
.toc .nav-head { margin-left: 0; margin-top: 4px; }
.toc li a { display: block; padding: 3px 0; font-size: 13px; color: var(--ink-3); text-decoration: none; line-height: 1.45; }
.toc li.l3 a { padding-left: 12px; }
.toc li a:hover, .toc li a.active { color: var(--ink); }
.toc li a.active { box-shadow: -2px 0 0 var(--accent); padding-left: 8px; margin-left: -10px; }
.toc li.l3 a.active { padding-left: 20px; }

/* ---- sheet ---------------------------------------------------------- */
.sheet { padding: 40px 56px 56px; min-width: 0; }
.head { max-width: var(--measure); padding-bottom: 22px; margin-bottom: 30px; border-bottom: 1px solid var(--rule); }
.kicker {
  margin: 0 0 10px; font: 500 12px var(--mono); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-ink);
}
.head h1 { margin: 0; font-size: clamp(30px, 4vw, 42px); line-height: 1.12; font-weight: 400; letter-spacing: -0.012em; }
.lede { margin: 14px 0 0; font-size: 18px; color: var(--ink-2); line-height: 1.55; }

.prose { max-width: var(--measure); counter-reset: h2; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 {
  counter-increment: h2;
  margin: 2.6em 0 0.6em; padding-top: 0.9em;
  border-top: 1px solid var(--rule);
  font-size: 23px; font-weight: 500; line-height: 1.3; letter-spacing: -0.005em;
}
.prose h2::before {
  content: counter(h2, decimal-leading-zero);
  display: block; margin-bottom: 4px;
  font: 400 12px var(--mono); color: var(--accent-ink); letter-spacing: 0.06em;
}
.page-changelog .prose h2::before, .page-index .prose h2::before { content: none; }
.prose h3 { margin: 2em 0 0.4em; font-size: 18px; font-weight: 500; }
.prose h4 { margin: 1.6em 0 0.3em; font-size: 15px; font-weight: 600; color: var(--ink-2); }
.prose p, .prose li { hyphens: auto; }
.prose ul, .prose ol { padding-left: 1.35em; }
.prose li + li { margin-top: 0.3em; }
.prose li::marker { color: var(--ink-3); }
.prose strong { font-weight: 600; }
.prose em { font-style: italic; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.4em 0; }
.prose blockquote {
  margin: 1.4em 0; padding: 2px 0 2px 18px;
  border-left: 2px solid var(--accent); color: var(--ink-2);
}
.prose dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; }
.prose dt { font: 500 14px var(--mono); color: var(--ink); }
.prose dd { margin: 0; color: var(--ink-2); }

code { font: 400 0.88em var(--mono); }
:not(pre) > code { padding: 0.08em 0.28em; background: var(--sheet); border: 1px solid var(--rule); border-radius: 2px; overflow-wrap: anywhere; }
pre {
  position: relative; margin: 1.4em 0;
  padding: 14px 16px; overflow-x: auto;
  background: var(--sheet); border: 1px solid var(--rule); border-left: 2px solid var(--rule-strong);
  font-size: 14px; line-height: 1.55;
}
pre code { font-size: 13.5px; }
.copy {
  position: absolute; top: 6px; right: 8px;
  font: 400 11.5px var(--mono); color: var(--ink-3);
  opacity: 0; transition: opacity 120ms var(--ease);
}
pre:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { color: var(--accent-ink); }

.table { overflow-x: auto; margin: 1.5em 0; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th {
  text-align: left; font-weight: 500; font-size: 12px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--rule-strong); padding: 6px 14px 6px 0;
}
td { border-bottom: 1px solid var(--rule); padding: 8px 14px 8px 0; vertical-align: top; }
td code { border: 0; background: none; padding: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--sheet) 70%, transparent); }

figure { margin: 2em 0; }
figure img { display: block; max-width: 100%; height: auto; border: 1px solid var(--rule); background: var(--sheet); }
.prose figure.wide, .page-index figure:first-of-type { max-width: none; }
figcaption { margin-top: 8px; font-size: 14px; color: var(--ink-2); line-height: 1.5; }
.figno { font: 500 12.5px var(--mono); color: var(--accent-ink); margin-right: 6px; }
.prose img.inline { border: 0; }

.math.display { overflow-x: auto; overflow-y: hidden; margin: 1.2em 0; padding: 4px 0; }
.katex { font-size: 1.04em; }

.foot {
  display: flex; flex-wrap: wrap; gap: 8px 22px;
  max-width: var(--measure); margin-top: 72px; padding-top: 16px;
  border-top: 1px solid var(--rule); font-size: 13px; color: var(--ink-3);
}
.foot a { color: var(--ink-3); }

/* ---- home page ------------------------------------------------------ */
.page-index .sheet { padding-top: 32px; }
.page-index .head { display: none; }
.page-index .prose { max-width: 980px; }
.page-index .prose > p:first-child img, .page-index .prose figure:first-child img { border: 0; }
.spec { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 0; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); margin: 2em 0; }
.spec div { padding: 14px 16px 16px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.spec b { display: block; font: 400 26px var(--mono); letter-spacing: -0.02em; color: var(--ink); }
.spec span { font-size: 13px; color: var(--ink-2); }
.intro { font-size: 21px; line-height: 1.5; max-width: 34em; color: var(--ink); }
.intro em { font-style: normal; color: var(--accent-ink); }

/* ---- search --------------------------------------------------------- */
.search { position: fixed; inset: 0; z-index: 40; background: color-mix(in srgb, var(--paper) 72%, transparent); backdrop-filter: blur(2px); }
.search-box {
  width: min(560px, calc(100% - 2 * var(--gutter))); margin: 12vh auto 0;
  background: var(--sheet); border: 1px solid var(--rule-strong);
  box-shadow: 0 24px 48px -24px rgba(0, 0, 0, 0.35);
}
.search input {
  width: 100%; padding: 14px 16px; border: 0; border-bottom: 1px solid var(--rule);
  background: transparent; color: var(--ink); font: 400 17px var(--sans); outline: none;
}
.search .results { list-style: none; margin: 0; padding: 6px 0; max-height: 50vh; overflow-y: auto; }
.search .results a { display: block; padding: 7px 16px; text-decoration: none; }
.search .results a span { display: block; font-size: 12.5px; color: var(--ink-3); }
.search .results a:hover, .search .results li.on a { background: var(--paper); color: var(--accent-ink); }
.search .hint { margin: 0; padding: 8px 16px; font-size: 12px; color: var(--ink-3); border-top: 1px solid var(--rule); }

/* ---- motion --------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .sheet { animation: rise 260ms var(--ease) both; }
  .search:not([hidden]) .search-box { animation: rise 160ms var(--ease) both; }
  .prose figure img { transition: opacity 240ms var(--ease); }
  .prose figure img[loading="lazy"]:not(.seen) { opacity: 0; }
  @keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
}

/* ---- narrow screens ------------------------------------------------- */
@media (max-width: 1180px) {
  .frame { grid-template-columns: 220px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 820px) {
  .frame { display: block; }
  .menu { display: inline; }
  .tools .search-open { display: none; }
  .brand .ver { display: none; }
  .nav {
    display: none; position: fixed; top: 52px; left: 0; right: 0; bottom: 0; z-index: 15;
    max-height: none; background: var(--paper); border-right: 0;
  }
  body.nav-open .nav { display: block; }
  .sheet { padding: 28px var(--gutter) 40px; }
  .lede { font-size: 17px; }
  .intro { font-size: 18px; }
  pre { margin-left: calc(-1 * var(--gutter)); margin-right: calc(-1 * var(--gutter)); border-left: 0; border-right: 0; }
}
@media print {
  .bar, .nav, .toc, .copy, .foot a { display: none; }
  .frame { display: block; }
  body { background: #fff; }
}