:root {
  --chrome-ink: var(--ink, #071a38);
  --chrome-ink-soft: var(--ink-soft, #233550);
  --chrome-line: var(--line, var(--rule, rgb(7 26 56 / 18%)));
  --chrome-paper: var(--surface, var(--paper, #f4efe7));
  --chrome-paper-deep: var(--paper-deep, var(--paper, #e4dfd3));
  --chrome-signal: var(--signal, #ef4b33);
  --chrome-signal-ink: #071a38;
  --chrome-blue: var(--blueprint, #00549e);
  --chrome-blue-ink: var(--blueprint-ink, white);
  --chrome-shell: 76rem;
  --chrome-pad: clamp(1.1rem, 3vw, 2rem);
  --chrome-header-shell: 76rem;
  --chrome-header-pad: clamp(1.1rem, 3vw, 2rem);
  --chrome-header-height: 5.25rem;
  --chrome-glass-dark: rgb(7 26 56 / 6%);
  --chrome-glass-dark-line: rgb(255 255 255 / 35%);
  --chrome-glass-light: rgb(250 248 242 / 8%);
  --chrome-glass-light-line: rgb(7 26 56 / 14%);
  --chrome-glass-filter: blur(18px) saturate(2.3) brightness(1.08);
  --chrome-glass-dark-shadow: 0 12px 32px rgb(3 16 36 / 22%), inset 0 1px 1px rgb(255 255 255 / 48%), inset 0 -10px 20px -12px rgb(255 255 255 / 24%);
  --chrome-glass-light-shadow: 0 12px 30px rgb(7 26 56 / 12%), inset 0 1px 1px rgb(255 255 255 / 40%), inset 0 -10px 20px -12px rgb(255 255 255 / 14%);
  --chrome-glass-sheen:
    radial-gradient(65% 180% at 13% -75%, rgb(255 255 255 / 24%), transparent 58%),
    radial-gradient(45% 160% at 92% 5%, rgb(111 187 255 / 18%), transparent 62%),
    linear-gradient(180deg, rgb(255 255 255 / 12%), rgb(255 255 255 / 4%) 42%, transparent 72%);
  --chrome-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --chrome-sans: "Outfit", "Avenir Next", sans-serif;
}

html[data-site-theme='dark'] {
  color-scheme: dark;
  --paper: #0c1422;
  --paper-deep: #17263a;
  --paper-bright: #111d2e;
  --surface: #142238;
  --ink: #f2f5fb;
  --ink-soft: #c2ccdc;
  --ink-faint: #9caac0;
  --line: rgb(226 234 247 / 18%);
  --line-strong: rgb(226 234 247 / 34%);
  --rule: rgb(226 234 247 / 22%);
  --signal: #ff735b;
  --signal-deep: #ff9a84;
  --blueprint: #2ea3f2;
  --blueprint-ink: #071a38;
  --blue: #00549e;
  --blue-deep: #0c2a5c;
  --red: #ff735b;
  --chrome-ink: #f2f5fb;
  --chrome-ink-soft: #c2ccdc;
  --chrome-line: rgb(226 234 247 / 18%);
  --chrome-paper: #142238;
  --chrome-paper-deep: #17263a;
  --chrome-signal: #ff735b;
  --chrome-blue: #2ea3f2;
  --chrome-blue-ink: #071a38;
  --chrome-glass-dark: rgb(4 10 20 / 28%);
  --chrome-glass-dark-line: rgb(235 242 255 / 28%);
  --chrome-glass-light: rgb(10 18 31 / 72%);
  --chrome-glass-light-line: rgb(226 234 247 / 20%);
  --chrome-glass-dark-shadow: 0 12px 32px rgb(0 0 0 / 34%), inset 0 1px 1px rgb(255 255 255 / 18%), inset 0 -10px 20px -12px rgb(255 255 255 / 12%);
  --chrome-glass-light-shadow: 0 12px 30px rgb(0 0 0 / 28%), inset 0 1px 1px rgb(255 255 255 / 14%), inset 0 -10px 20px -12px rgb(255 255 255 / 8%);
  --chrome-glass-sheen:
    radial-gradient(65% 180% at 13% -75%, rgb(255 255 255 / 14%), transparent 58%),
    radial-gradient(45% 160% at 92% 5%, rgb(121 170 255 / 12%), transparent 62%),
    linear-gradient(180deg, rgb(255 255 255 / 7%), rgb(255 255 255 / 2%) 42%, transparent 72%);
}

html[data-site-theme='dark'] body {
  background: var(--paper);
  color: var(--ink);
}

body {
  font-size: 1.08rem;
  line-height: 1.68;
}

body.type-scale-compact { font-size: 1rem; }
body.type-scale-balanced { font-size: 1.04rem; }
body.type-scale-expressive { font-size: 1.08rem; }
body.spacing-compact { --chrome-pad: clamp(0.85rem, 2vw, 1.5rem); }
body.spacing-generous { --chrome-pad: clamp(1.35rem, 4vw, 2.75rem); }
body.content-width-narrow { --chrome-shell: 62rem; }
body.content-width-wide { --chrome-shell: 90rem; }

/* The public header is a shared component. Keep its structure, desktop
   spacing, responsive breakpoint, and open-state treatment here so the
   homepage, runtime documents, and generated fallbacks cannot grow separate
   navigation systems. */
body.nav-open { overflow: hidden; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--chrome-glass-dark-line);
  background: var(--chrome-glass-dark);
  color: white;
  /* Liquid-glass approximation: full-width bar, clear saturated blur, a
     bright rim with lensing insets, and a sheen overlay. True refraction
     needs backdrop-filter: url(), which Safari lacks. */
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-dark-shadow);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  isolation: isolate;
  transition: none;
}

/* Sheen: light wash behind the content, above the blurred backdrop. Only the
   dark unscrolled state keeps it — on the clear scrolled glass any uniform
   wash reads as a white film. */
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--chrome-glass-sheen);
}

.site-header::after {
  display: block;
  position: absolute;
  inset: 0 0 auto;
  z-index: 0;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgb(255 255 255 / 62%) 18%, rgb(255 255 255 / 24%) 82%, transparent);
  content: '';
}

.site-header.is-scrolled::before { display: none; }

.site-header--sticky { position: sticky; top: 0; z-index: 100; }

.site-header--overlay {
  position: fixed;
  inset: 0 0 auto;
  border-bottom-color: var(--chrome-glass-dark-line);
  background: var(--chrome-glass-dark);
  color: white;
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-dark-shadow);
  transition: none;
}

.site-header--overlay::after {
  display: block;
}

.site-header--overlay.is-scrolled {
  border-bottom-color: var(--chrome-glass-light-line);
  background: var(--chrome-glass-light);
  color: var(--chrome-ink);
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-light-shadow);
}

.site-header--overlay.is-scrolled::after {
  background: linear-gradient(90deg, transparent, rgb(7 26 56 / 28%) 18%, rgb(255 255 255 / 32%) 82%, transparent);
}

.site-header:not(.site-header--overlay).is-scrolled {
  border-bottom-color: var(--chrome-glass-light-line);
  background: var(--chrome-glass-light);
  color: var(--chrome-ink);
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-light-shadow);
}

.site-header--article {
  border-bottom-color: var(--chrome-glass-dark-line);
  background: var(--chrome-glass-dark);
  color: white;
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-dark-shadow);
}

.site-header--article .site-nav a:hover,
.site-header--article .site-nav a[aria-current='page'] { color: white; }

.site-header--article .site-nav__submenu,
.site-header--article .site-nav.is-open { color: var(--chrome-ink); }

.site-header--article .site-nav.is-open a:hover,
.site-header--article .site-nav.is-open a[aria-current='page'] { color: var(--chrome-signal); }

.site-header--article.is-scrolled {
  border-bottom-color: var(--chrome-glass-light-line);
  background: var(--chrome-glass-light);
  color: var(--chrome-ink);
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-light-shadow);
}

.site-header--article.is-scrolled .site-nav a:hover,
.site-header--article.is-scrolled .site-nav a[aria-current='page'] { color: inherit; }

/* Article pages keep the semantic article modifier, but use the same
   clear liquid-glass treatment as every other public page. */
.site-header--overlay.site-header--article {
  border-bottom-color: var(--chrome-glass-dark-line);
  background: var(--chrome-glass-dark);
  color: white;
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-dark-shadow);
}

.site-header--overlay.site-header--article.is-scrolled {
  border-bottom-color: var(--chrome-glass-light-line);
  background: var(--chrome-glass-light);
  color: var(--chrome-ink);
  -webkit-backdrop-filter: var(--chrome-glass-filter);
  backdrop-filter: var(--chrome-glass-filter);
  box-shadow: var(--chrome-glass-light-shadow);
}

/* Chromium can add a narrow edge refraction on top of the cross-browser
   frosted treatment. The runtime only adds .glass-lens after it has built and
   sized the filter, so browsers without SVG backdrop filters keep the stable
   CSS fallback above. */
html.glass-lens .site-header,
html.glass-lens .site-header.is-scrolled {
  -webkit-backdrop-filter: url('#pb-glass-lens') blur(5px) saturate(2);
  backdrop-filter: url('#pb-glass-lens') blur(5px) saturate(2);
}

/* Adaptive ink: the runtime samples what sits behind the clear glass and
   flags the bar when it is dark, flipping the text to white the way iOS
   glass does. Whole-bar flips only — per-letter masking is not possible
   over backdrop-filter. */
.site-header.is-scrolled.site-header--over-dark {
  border-bottom-color: rgb(255 255 255 / 25%);
  color: white;
}

.site-header.is-scrolled.site-header--over-dark .site-nav a:hover,
.site-header.is-scrolled.site-header--over-dark .site-nav a[aria-current='page'] { color: white; }

@media (prefers-contrast: more), (prefers-reduced-transparency: reduce) {
  :root {
    --chrome-glass-dark: rgb(7 26 56 / 78%);
    --chrome-glass-light: rgb(250 248 242 / 92%);
    --chrome-glass-dark-line: rgb(255 255 255 / 42%);
    --chrome-glass-light-line: rgb(7 26 56 / 34%);
    --chrome-glass-filter: blur(18px);
  }

  .site-header::before { display: none; }
}

.site-header__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(max-content, 1fr) auto minmax(max-content, 1fr);
  align-items: center;
  gap: 2rem;
  width: min(100%, var(--chrome-header-shell));
  min-height: 5.25rem;
  margin: 0 auto;
  padding: 0 var(--chrome-header-pad);
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 0.7rem;
  width: max-content;
  color: inherit;
  font-family: var(--chrome-sans);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.site-header .brand__logo {
  width: clamp(10rem, 15vw, 13.5rem);
  height: auto;
}

.site-header:not(.is-scrolled) .brand__logo {
  filter: brightness(0) invert(1);
}

.site-header.site-header--over-dark .brand__logo {
  filter: brightness(0) invert(1);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.75rem, 1.45vw, 1.5rem);
}

.site-nav a,
.header-actions a {
  color: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  padding: 0.35rem 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  content: '';
  background: var(--chrome-signal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}

.site-nav a:hover,
.site-nav a[aria-current='page'] { color: var(--chrome-ink); }

.site-header--overlay .site-nav a:hover,
.site-header--overlay .site-nav a[aria-current='page'] { color: inherit; }

.site-nav a:hover::after,
.site-nav a[aria-current='page']::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav__group {
  position: relative;
  display: flex;
  align-items: center;
}
.site-nav__parent {
  display: inline-flex;
  align-items: center;
}
.site-nav__parent span { display: inline-block; margin-left: 0.2rem; transition: transform 0.2s ease; }

.site-nav__submenu {
  position: absolute;
  top: calc(100% + 0.65rem);
  left: 50%;
  z-index: 5;
  display: grid;
  min-width: 12.5rem;
  padding: 0.55rem;
  border: 1px solid var(--chrome-line);
  border-radius: 0.65rem;
  background: var(--chrome-paper, #f4efe7);
  color: var(--chrome-ink);
  box-shadow: 0 1rem 2.5rem rgb(17 21 28 / 12%);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -0.35rem);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.site-nav__submenu::before {
  position: absolute;
  right: 0;
  bottom: 100%;
  left: 0;
  height: 0.7rem;
  content: '';
}

.site-nav__submenu a { padding: 0.65rem 0.75rem; border-radius: 0.4rem; white-space: nowrap; }
.site-nav__submenu a::after { display: none; }

.site-nav__submenu a:hover,
.site-nav__submenu a:focus-visible { background: var(--chrome-paper-deep, #e4dfd3); }
.site-nav__submenu a[aria-current='page'] {
  background: transparent;
  box-shadow: inset 0 -2px var(--chrome-signal);
  color: var(--chrome-signal);
}
.site-nav__submenu a[aria-current='page']:hover,
.site-nav__submenu a[aria-current='page']:focus-visible { background: var(--chrome-paper-deep, #e4dfd3); }

/* Overlay and article headers use light text on the bar but keep dropdowns
   light. Their broad hover rules must not turn submenu labels white on that
   light surface. */
.site-header--overlay .site-nav__submenu a:hover,
.site-header--overlay .site-nav__submenu a:focus-visible,
.site-header--article .site-nav__submenu a:hover,
.site-header--article .site-nav__submenu a:focus-visible { color: var(--chrome-ink); }
.site-header--overlay .site-nav__submenu a[aria-current='page'],
.site-header--article .site-nav__submenu a[aria-current='page'] { color: var(--chrome-signal); }

.site-nav__group:hover .site-nav__submenu,
.site-nav__group:focus-within .site-nav__submenu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.site-nav__group:hover .site-nav__parent span,
.site-nav__group:focus-within .site-nav__parent span { transform: rotate(180deg); }

.site-nav__theme { display: none; }
.site-nav__theme-label { display: none; }

.header-actions { display: flex; justify-content: flex-end; align-items: center; gap: clamp(0.55rem, 1.2vw, 0.9rem); }
.header-actions .header-cta { padding-bottom: 0.2rem; border-bottom: 1px solid var(--chrome-signal); }
.header-actions .header-cta span { margin-left: 0.35rem; color: var(--chrome-signal); }

.theme-toggle {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
  line-height: 1;
  transform: none;
  transition: color 180ms ease, transform 180ms ease;
}

.theme-toggle__icon {
  display: block;
  width: 1.2rem;
  height: 1.2rem;
  font-size: 0;
}

.theme-toggle__icon::before {
  display: block;
  width: 100%;
  height: 100%;
  background: currentColor;
  content: '';
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M20.2 15.3A8.5 8.5 0 0 1 8.7 3.8a8.5 8.5 0 1 0 11.5 11.5Z'/%3E%3C/svg%3E") center / contain no-repeat;
}

html[data-site-theme='dark'] .theme-toggle__icon::before {
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 7a5 5 0 1 0 0 10 5 5 0 0 0 0-10Zm-1-5h2v3h-2V2Zm0 17h2v3h-2v-3ZM2 11h3v2H2v-2Zm17 0h3v2h-3v-2ZM4.2 5.6l1.4-1.4 2.1 2.1-1.4 1.4-2.1-2.1Zm12.1 12.1 1.4-1.4 2.1 2.1-1.4 1.4-2.1-2.1Zm0-11.4 2.1-2.1 1.4 1.4-2.1 2.1-1.4-1.4ZM4.2 18.4l2.1-2.1 1.4 1.4-2.1 2.1-1.4-1.4Z'/%3E%3C/svg%3E");
}

.theme-toggle:hover {
  color: var(--chrome-signal);
  transform: translateY(-1px);
}

.theme-toggle:hover { background: rgb(255 255 255 / 10%); }
.theme-toggle:active { transform: none; }

.nav-toggle { display: none; }
.nav-toggle__lines,
.nav-toggle__lines::before {
  display: block;
  width: 1.5rem;
  height: 2px;
  content: '';
  background: currentColor;
  transition: transform 180ms ease;
}

.nav-toggle__lines::before { transform: translateY(-0.45rem); }
.nav-toggle[aria-expanded='true'] .nav-toggle__lines { transform: rotate(45deg); }
.nav-toggle[aria-expanded='true'] .nav-toggle__lines::before { transform: rotate(-90deg); }

@media (max-width: 70rem) {
  .site-header__inner { grid-template-columns: 1fr auto auto; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
    width: 2.75rem;
    min-height: 2.75rem;
    padding: 0.6rem 0;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .nav-toggle__label {
    position: absolute;
    overflow: hidden;
    clip-path: inset(50%);
    width: 1px;
    height: 1px;
    white-space: nowrap;
  }

  .site-nav { display: none; }
  .header-actions { display: none; }

  .site-nav__theme {
    display: block;
    padding-top: 0.5rem;
    border-top: 1px solid var(--chrome-line);
  }

  .site-nav.is-open .theme-toggle {
    display: inline-flex;
    width: auto;
    height: 2.75rem;
    align-items: center;
    justify-content: flex-start;
    gap: 0.65rem;
    transform: none;
  }

  .site-nav__theme-label {
    display: inline;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }

  .site-nav.is-open .theme-toggle:hover,
  .site-nav.is-open .theme-toggle:active { transform: none; }

  .site-nav.is-open {
    position: fixed;
    top: var(--chrome-header-height);
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    width: 100%;
    max-height: calc(100dvh - var(--chrome-header-height));
    padding: 1rem var(--chrome-header-pad) 2rem;
    overflow-y: auto;
    border-top: 1px solid var(--chrome-line);
    border-bottom: 1px solid var(--chrome-line);
    background: var(--chrome-paper, #f4efe7);
    color: var(--chrome-ink);
    box-shadow: 0 1.4rem 4rem rgb(17 21 28 / 12%);
    overscroll-behavior: contain;
  }

  .site-nav.is-open a {
    padding: 1rem 0;
    border-bottom: 1px solid var(--chrome-line);
    font-size: 1rem;
  }

  .site-nav.is-open a:hover,
  .site-nav.is-open a[aria-current='page'] { color: var(--chrome-signal); }
  .site-nav.is-open a::after { display: none; }

  .site-nav.is-open .site-nav__group {
    display: grid;
    gap: 0;
    border-bottom: 1px solid var(--chrome-line);
  }

  .site-nav.is-open .site-nav__submenu {
    position: static;
    display: grid;
    min-width: 0;
    margin: 0;
    padding: 0 0 0.5rem 1rem;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .site-nav.is-open .site-nav__submenu a {
    padding: 0.7rem 0;
    color: var(--chrome-ink-soft, #233550);
    font-size: 0.86rem;
  }

  .site-nav.is-open .site-nav__parent span { display: none; }
}

@media (max-width: 48rem) {
  :root { --chrome-header-height: 4.5rem; }
  .site-header__inner { min-height: 4.5rem; }
}

@media (max-width: 31rem) {
  .site-header__inner { column-gap: 0.7rem; }
  .site-header .brand__logo { width: clamp(8rem, 42vw, 10rem); }
  .header-actions { gap: 0.35rem; }
}

.article-body :is(h2, h3, h4), .standard-page__body :is(h2, h3, h4), .story-card :is(h2, h3) { line-height: var(--site-heading-line-height, 1.08); }
.article-body a, .standard-page__body a, .story-card a { text-decoration-line: var(--site-link-decoration, underline); }
.button, .header-cta, .newsletter__field { border-radius: var(--site-button-radius, 0); }
.article-body img, .article-feature img, .story-card__image, .page-template img { border-radius: var(--site-media-radius, 0); }
.article-body p, .page-body p { margin-bottom: var(--site-paragraph-spacing, 1.55rem); }
.article-body h2, .page-body h2 { font-size: var(--site-heading-font-size, clamp(1.8rem, 4vw, 2.5rem)); }
.article-body blockquote, .page-body blockquote { border-block-color: var(--site-quote-accent, var(--line-strong)); }
.article-page .article-body blockquote { border-top-color: var(--site-quote-accent, var(--blueprint)); }
.article-button [data-article-button-link], .article-button-row [data-article-button-link] { background: var(--site-button-fill, var(--signal)); color: var(--site-button-ink, var(--signal-ink)); }
.story-card__image, .prompt-card, .tag-card, .model-card, .closed-model-card { box-shadow: var(--site-card-shadow, none); border-color: var(--site-card-border, var(--line)); }

.site-header--variant-solid:not(.site-header--overlay) { background: var(--chrome-paper); color: var(--chrome-ink); }
.site-header--variant-minimal:not(.site-header--overlay) { border-bottom-color: transparent; box-shadow: none; }
.site-header--variant-minimal .header-cta { display: none; }

.site-announcement {
  width: 100%;
  border-bottom: 1px solid rgb(7 26 56 / 18%);
  background: var(--paper, #f4efe7);
  color: var(--chrome-ink);
  font-family: var(--chrome-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-announcement__inner {
  width: min(100%, var(--chrome-shell));
  margin-inline: auto;
  padding: 0.75rem var(--chrome-pad);
  text-align: center;
}

.site-announcement--variant-signal { border-color: transparent; background: var(--chrome-signal); color: var(--chrome-signal-ink); }
.site-announcement--variant-blueprint { border-color: transparent; background: var(--chrome-blue); color: var(--chrome-blue-ink); }

.visually-hidden {
  position: absolute;
  overflow: hidden;
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  white-space: nowrap;
}

.newsletter {
  display: block;
  width: 100%;
  max-width: none;
  margin: clamp(4rem, 9vw, 8rem) 0 0;
  padding: 0;
  border: 0;
  background: var(--chrome-signal);
  color: var(--chrome-signal-ink);
}

.newsletter__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 1.1fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: end;
  width: min(100%, var(--chrome-shell));
  margin-inline: auto;
  padding: clamp(4rem, 8vw, 7rem) var(--chrome-pad);
}

.newsletter .eyebrow {
  display: block;
  color: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.newsletter .eyebrow::before { background: currentColor; }

.newsletter__intro h2 {
  max-width: 11ch;
  margin: 1.75rem 0 0;
  font-family: var(--chrome-display);
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 400;
  line-height: 0.88;
  letter-spacing: -0.07em;
}

.newsletter__form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-self: end;
  border-bottom: 2px solid currentColor;
}

.newsletter__field {
  min-width: 0;
  min-height: 4rem;
  padding: 0.75rem 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
}

.newsletter__field::placeholder { color: color-mix(in srgb, currentColor 56%, transparent); }
.newsletter__field:focus { box-shadow: inset 0 -3px var(--chrome-blue); }

.newsletter .button {
  justify-self: end;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.newsletter .button:hover { background: var(--editorial-night); color: white; }
.newsletter .form-note { grid-column: 1 / -1; min-height: 1.5rem; margin: 1rem 0 0; font-size: 0.82rem; }
.newsletter .form-note:empty { display: none; }
.newsletter + .site-footer,
main:has(> .newsletter:last-child) + .site-footer,
.article-page .site-footer { margin-top: 0; }

.site-social-links {
  width: 100%;
  border-block: 1px solid var(--chrome-line);
  background: var(--chrome-paper, var(--paper));
  color: var(--chrome-ink);
}

.site-social-links__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem 2rem;
  width: min(100%, var(--chrome-shell));
  margin-inline: auto;
  padding: 1.25rem var(--chrome-pad);
}

.site-social-links h2 {
  margin: 0;
  color: inherit;
  font: 700 0.75rem/1.2 var(--chrome-sans);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.site-social-links nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }
.site-social-links a { color: inherit; font: 600 0.9rem/1.4 var(--chrome-sans); text-decoration: none; }
.site-social-links a:hover { color: var(--chrome-signal); }
.site-social-links--variant-stacked .site-social-links__inner { align-items: start; }
.site-social-links--variant-stacked nav { display: grid; gap: 0.35rem; }
.site-social-links--variant-minimal { border-block: 0; background: transparent; }
.site-social-links--variant-minimal h2 { position: absolute; overflow: hidden; clip-path: inset(50%); width: 1px; height: 1px; }
.site-social-links--variant-minimal .site-social-links__inner { justify-content: flex-end; padding-block: 0.75rem; }

.newsletter--variant-compact .newsletter__inner {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.newsletter--variant-compact .newsletter__intro h2 {
  font-size: clamp(2.5rem, 4.5vw, 4.5rem);
}

.newsletter--variant-minimal {
  border-block: 1px solid var(--chrome-line);
  background: var(--chrome-paper);
  color: var(--chrome-ink);
}

.newsletter--variant-minimal .newsletter__inner {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.site-footer {
  width: 100%;
  max-width: none;
  margin-top: clamp(4rem, 8vw, 7rem);
  padding: 0;
  background: var(--chrome-ink);
  color: white;
  font-family: var(--chrome-sans);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  width: min(100%, var(--chrome-shell));
  margin-inline: auto;
  padding: clamp(3.5rem, 7vw, 6rem) var(--chrome-pad);
}

.site-footer .brand {
  display: inline-flex;
  align-items: center;
  color: white;
  text-decoration: none;
}

.site-footer .brand__logo {
  width: min(100%, 13.5rem);
  height: auto;
  filter: brightness(0) invert(1);
}

.site-footer__intro p { max-width: 34ch; margin: 1rem 0 0; color: rgb(255 255 255 / 66%); }
.site-footer h2 { margin: 0 0 1rem; color: white; font: 700 0.75rem/1.2 var(--chrome-sans); letter-spacing: 0.15em; text-transform: uppercase; }

.site-footer nav a {
  display: block;
  width: max-content;
  max-width: 100%;
  margin: 0.48rem 0;
  color: #d8dce4;
  font-size: 0.94rem;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none;
  text-transform: none;
}

.site-footer nav a:hover { color: #ff755a; }

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  width: min(100%, var(--chrome-shell));
  margin-inline: auto;
  padding: 1.4rem var(--chrome-pad);
  border-top: 1px solid rgb(255 255 255 / 18%);
  color: rgb(255 255 255 / 52%);
  font-size: 0.82rem;
}

.site-footer--variant-compact .site-footer__inner { padding-block: 2.25rem; }
.site-footer--variant-compact .site-footer__intro p { max-width: 44ch; }
.site-footer--variant-minimal .site-footer__inner { grid-template-columns: 1fr auto; padding-block: 2rem; }
.site-footer--variant-minimal .site-footer__inner nav:not(:last-child) { display: none; }
.site-footer--variant-minimal .site-footer__inner nav:last-child { display: flex; flex-wrap: wrap; gap: 1rem; }
.site-footer--variant-minimal .site-footer__inner nav:last-child h2 { position: absolute; overflow: hidden; clip-path: inset(50%); width: 1px; height: 1px; }
.site-footer--variant-minimal .site-footer__inner nav:last-child a { margin: 0; }

@media (max-width: 54rem) {
  .newsletter__inner { grid-template-columns: 1fr; }
  .site-footer__inner {
    grid-template-columns: 1.55fr repeat(3, minmax(0, 1fr));
    gap: clamp(1.25rem, 3vw, 1.75rem);
    padding-block: 2rem;
  }
  .site-footer__intro { grid-column: auto; }
  .site-footer__intro p { margin-top: 0.65rem; }
  .site-footer h2 { margin-bottom: 0.7rem; }
  .site-footer nav a { margin-block: 0.28rem; line-height: 1.35; }
}

@media (max-width: 42rem) {
  .site-footer__inner { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .site-footer__intro { grid-column: 1 / -1; }
}

@media (max-width: 31rem) {
  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem 1rem;
    padding-block: 2rem;
  }
  .site-footer__intro,
  .site-footer__inner nav:last-child { grid-column: 1 / -1; }
  .site-footer__inner nav:last-child {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, max-content));
    column-gap: 1.5rem;
  }
  .site-footer__inner nav:last-child h2 { grid-column: 1 / -1; }
  .site-footer__base { padding-block: 1.15rem; }
}

@media (max-width: 31rem) {
  .newsletter__form { grid-template-columns: 1fr; }
  .newsletter .button { justify-self: start; padding: 1rem 0; }
}

html[data-site-theme='dark'] .site-header--overlay.is-scrolled,
html[data-site-theme='dark'] .site-header:not(.site-header--overlay).is-scrolled,
html[data-site-theme='dark'] .site-header--article.is-scrolled {
  border-bottom-color: var(--chrome-glass-light-line);
  background: var(--chrome-glass-light);
  color: var(--chrome-ink);
  box-shadow: var(--chrome-glass-light-shadow);
}

html[data-site-theme='dark'] .site-header--overlay.is-scrolled .site-nav a:hover,
html[data-site-theme='dark'] .site-header--overlay.is-scrolled .site-nav a[aria-current='page'],
html[data-site-theme='dark'] .site-header--article.is-scrolled .site-nav a:hover,
html[data-site-theme='dark'] .site-header--article.is-scrolled .site-nav a[aria-current='page'] { color: var(--chrome-ink); }

html[data-site-theme='dark'] .site-nav.is-open {
  background: var(--chrome-paper);
  color: var(--chrome-ink);
  box-shadow: 0 1.4rem 4rem rgb(0 0 0 / 32%);
}

html[data-site-theme='dark'] .site-announcement { border-bottom-color: var(--chrome-line); }

html[data-site-theme='dark'] .site-footer {
  background: #07101d;
  color: #f2f5fb;
}

html[data-site-theme='dark'] .site-footer nav a { color: #d8e2f0; }
html[data-site-theme='dark'] .site-footer nav a:hover { color: var(--chrome-signal); }

html[data-site-theme='dark'] .article-callout[data-tone="tip"] {
  border-left-color: #55d5a5;
  background: #102b28;
}

html[data-site-theme='dark'] .article-callout[data-tone="tip"]::before { color: #6ee6b9; }
html[data-site-theme='dark'] .article-callout[data-tone="warning"] { border-left-color: #f2bf66; background: #332a1d; }
html[data-site-theme='dark'] .article-callout[data-tone="warning"]::before { color: #ffd083; }
html[data-site-theme='dark'] .article-callout[data-tone="takeaway"] { border-left-color: var(--ink); background: #182b49; }

html[data-site-theme='dark'] .desk-item--x,
html[data-site-theme='dark'] .content-desk .desk-item--x { background: #101a29; }

html[data-site-theme='dark'] .x-post-embed {
  border-color: #344255;
  background: #111b2b;
  color: #edf2fa;
}

html[data-site-theme='dark'] .x-post-embed__identity span,
html[data-site-theme='dark'] .x-post-embed__date { color: #a6b4c7; }
html[data-site-theme='dark'] .x-post-embed__text { color: inherit; }
html[data-site-theme='dark'] .x-post-embed__footer { border-top-color: #2b384b; }