:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  --page: #fff;
  --surface: #f6f9f9;
  --text: #233638;
  --muted: #4d6265;
  --muted-subtle: #5c7073;
  --link: #145b5a;
  --link-hover: #0b413f;
  --border: #d9e4e3;
  --accent: #1c6767;
  --header: #184c4e;
  --header-text: #fff;
  --header-link: #d8f1e7;
  --toggle-bg: #fcfcfc;
  --toggle-text: #404040;
  --preview-bg: #fff5ce;
  --preview-text: #604f21;
  --preview-border: #d4a634;
  background: var(--page);
  color: var(--text);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #141414;
  --surface: #1e2828;
  --text: #e0e6e6;
  --muted: #b5c7c6;
  --muted-subtle: #a8bcba;
  --link: #80ded0;
  --link-hover: #b5f1e3;
  --border: #384749;
  --accent: #80ded0;
  --header: #133b3d;
  --header-text: #f3fffc;
  --header-link: #c1e9e0;
  --toggle-bg: #0b0c0d;
  --toggle-text: #c1c1c1;
  --preview-bg: #322b1e;
  --preview-text: #f2d896;
  --preview-border: #a1813a;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--text); }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--link-hover); }
a:focus-visible, button:focus-visible { outline: 3px solid #d4a634; outline-offset: 3px; }
.page-shell { max-width: 1100px; margin: 0 auto; padding: 0 28px; }
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  margin: 0 -28px;
  padding: 19px 28px;
  min-height: 94px;
  background: var(--header);
  color: var(--header-text);
  border-radius: 0 0 7px 7px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  color: var(--header-text);
  text-decoration: none;
}
.brand:hover, .brand:focus-visible { color: var(--header-text); }
.brand img {
  display: block;
  width: 122px;
  height: auto;
  object-fit: contain;
}
.brand-subtitle {
  border-left: 1px solid rgb(255 255 255 / .35);
  padding-left: 18px;
  color: var(--header-text);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: .01em;
}
.source-link {
  font-size: .875rem;
  color: var(--header-link);
  text-decoration-color: rgb(255 255 255 / .45);
}
.source-link:hover, .source-link:focus-visible { color: #fff; }
.hero { padding: 64px 0 48px; max-width: 760px; }
.eyebrow {
  margin: 0 0 14px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .075em;
}
h1 {
  font-size: clamp(1.85rem, 3.3vw, 2.75rem);
  font-weight: 650;
  letter-spacing: -.027em;
  line-height: 1.22;
  margin: 0 0 18px;
}
.hero > p:not(.eyebrow) { font-size: 1.04rem; line-height: 1.7; color: var(--muted); }
.hero .latest-reference { margin-top: 22px; font-size: .96rem; color: var(--text); }
.latest-reference a { font-weight: 700; }
.section-heading {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: .5rem 2rem;
  margin-bottom: 16px;
}
h2 { margin: 0; font-size: 1.35rem; font-weight: 650; }
.section-heading p { margin: 0; font-size: .87rem; color: var(--muted-subtle); }
.version-list { border-top: 1px solid var(--border); }
.version-row {
  display: grid;
  grid-template-columns: minmax(200px, 32%) 1fr;
  gap: 16px;
  padding: 23px 16px;
  border-bottom: 1px solid var(--border);
}
.version-row.version-current {
  border-left: 3px solid var(--accent);
  padding-left: 13px;
  background: var(--surface);
}
.version-identification h3 { font-size: 1.13rem; margin: 0 0 7px; }
.version-identification h3 a { font-weight: 700; text-decoration: none; }
.release-status { margin: 0 0 7px; color: var(--muted); font-size: .84rem; }
.compatibility { margin: 0; color: var(--muted-subtle); font-size: .84rem; }
.manual-links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 24px; }
.manual-links a { font-size: .91rem; font-weight: 500; }
.lifecycle-note {
  margin: 32px 0 68px;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.7;
}
.page-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding: 24px 0 58px;
  font-size: .82rem;
  color: var(--muted-subtle);
}
.preview-banner {
  margin: 0 -28px;
  padding: 10px 28px;
  border-bottom: 1px solid var(--preview-border);
  background: var(--preview-bg);
  color: var(--preview-text);
  font-size: .83rem;
}
.preview-banner a { color: inherit; }

/* Match the fixed bottom-right control supplied by sphinx_rtd_dark_mode. */
.theme-switcher {
  position: fixed;
  z-index: 10;
  right: 1.6em;
  bottom: 1.4em;
  display: grid;
  place-items: center;
  height: 2.2em;
  width: 2.2em;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--toggle-bg);
  color: var(--toggle-text);
  box-shadow: 0 3px 14px 4px rgb(0 0 0 / .28);
  font-size: 20px;
  cursor: pointer;
}
.theme-switcher[hidden] { display: none; }
.theme-switcher:hover { filter: brightness(1.12); }
.theme-switcher svg { width: 18px; height: 18px; }
.theme-icon-sun { display: none; }
html[data-theme="dark"] .theme-icon-sun { display: block; }
html[data-theme="dark"] .theme-icon-moon { display: none; }

@media (max-width: 680px) {
  .page-shell { padding: 0 20px; }
  .preview-banner { margin: 0 -20px; padding: 10px 20px; }
  .page-header {
    flex-wrap: wrap;
    margin: 0 -20px;
    padding: 18px 20px;
    gap: 12px 24px;
  }
  .brand { gap: 13px; }
  .brand img { width: 105px; }
  .brand-subtitle { font-size: .95rem; padding-left: 13px; }
  .hero { padding: 42px 0 30px; }
  .version-row { grid-template-columns: 1fr; gap: 18px; padding: 20px 12px; }
  .version-row.version-current { padding-left: 9px; }
  .manual-links { gap: 10px 20px; }
  .theme-switcher { right: 1rem; bottom: 1rem; }
}
@media (prefers-reduced-motion: no-preference) {
  body, .version-row, .theme-switcher { transition: background-color .16s ease, color .16s ease; }
}