/* --------------------------------------------------------------------------
   Design tokens
   -------------------------------------------------------------------------- */

:root {
  --color-bg: #050505;
  --color-bg-subtle: #0a0a0a;
  --color-card-bg: rgb(18, 18, 18, 0.75);
  --color-accent-card-bg: rgb(250, 149, 174, 0.75);
  --color-text: #e5e0df;
  --color-text-secondary: #a09a99;
  --color-heading: #f2f2f3;
  --color-accent: #fa95ae;
  --color-accent-hover: #f7b0c2;
  --color-accent-muted: rgb(250, 149, 174, 0.12);
  --color-border: rgb(230, 230, 230, 0.15);
  --color-border-subtle: rgb(230, 230, 230, 0.08);
  --color-code-bg: #121212;
  --color-shadow: rgb(0, 0, 0, 0.2);
  --color-shadow-md: rgb(0, 0, 0, 0.3);
  --color-text-on-accent: #050505;
  --color-cta-bg: linear-gradient(135deg, rgb(250, 149, 174, 0.08) 0%, rgb(18, 18, 18, 0.5) 50%, rgb(250, 149, 174, 0.06) 100%);
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 720px;
  --max-width-wide: 1000px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-card: 1.2em;
  --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 1rem 1.5rem;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgb(5, 5, 5, 0.72);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  text-decoration: none;
  color: var(--color-heading);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logo-sub {
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.site-nav-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin: 0;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-card-bg);
  backdrop-filter: blur(12px) saturate(170%);
  -webkit-backdrop-filter: blur(12px) saturate(170%);
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
  transition:
    border-color var(--transition-base),
    background var(--transition-base),
    box-shadow var(--transition-base);
}

.site-nav-menu-btn:hover {
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border));
  background: color-mix(in srgb, var(--color-accent-muted) 50%, var(--color-card-bg));
}

.site-nav-menu-icon {
  position: relative;
  display: block;
  width: 1.125rem;
  height: 1px;
  background: currentColor;
  box-shadow:
    0 -5px 0 currentColor,
    0 5px 0 currentColor;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.site-nav-menu-icon::before,
.site-nav-menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.site-header:has(#site-nav-toggle:checked) .site-nav-menu-btn .site-nav-menu-icon {
  background: transparent;
  box-shadow: none;
}

.site-header:has(#site-nav-toggle:checked) .site-nav-menu-btn .site-nav-menu-icon::before,
.site-header:has(#site-nav-toggle:checked) .site-nav-menu-btn .site-nav-menu-icon::after {
  opacity: 1;
}

.site-header:has(#site-nav-toggle:checked) .site-nav-menu-btn .site-nav-menu-icon::before {
  transform: translateY(-50%) rotate(45deg);
}

.site-header:has(#site-nav-toggle:checked) .site-nav-menu-btn .site-nav-menu-icon::after {
  transform: translateY(-50%) rotate(-45deg);
}

.site-nav-scrim {
  display: none;
}

.nav-link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 450;
  transition: color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: var(--color-text-on-accent);
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: 300;
  font-size: 0.85rem;
  font-weight: 600;
}

.skip-link:focus {
  top: 0.5rem;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Content layout
   -------------------------------------------------------------------------- */

.content {
  min-height: calc(100vh - 200px);
}

.page-container {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.page-container--no-top-pad {
  padding-top: 0;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero-section {
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;

  /* CSS-only depth (replaces photo + overlay)—same tokens as former hero overlay */
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--color-bg) 20%, transparent) 0%,
      var(--color-bg) 100%
    ),
    var(--color-bg-subtle);
}

.hero-section-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 5rem;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero {
  margin-bottom: 0;
  max-width: var(--max-width);
  position: relative;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
  display: block;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 1.5rem;
  color: var(--color-heading);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  font-weight: 400;
}

.hero-description {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.hero-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  transition: text-decoration-color var(--transition-base), color var(--transition-base);
}

.hero-link:hover {
  text-decoration-color: var(--color-accent-hover);
  color: var(--color-accent-hover);
}

/* --------------------------------------------------------------------------
   Homepage cards & sections
   -------------------------------------------------------------------------- */

.home-sections {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.home-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--color-card-bg);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  border: 1px solid var(--color-border);
  box-shadow: 0 12px 40px var(--color-shadow-md);
}

.home-card--accent {
  background: var(--color-accent-card-bg);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  border-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.home-card-content {
  position: relative;
  z-index: 1;
  padding: 3.5rem 3rem;
}

.home-card--accent .home-card-content {
  color: var(--color-text-on-accent);
}

.section-kicker {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.home-card-content h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.85rem;
  color: var(--color-heading);
}

.home-card-content > p {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.home-card-content > p:last-child {
  margin-bottom: 0;
}

.home-card-link {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.65rem 1.35rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-heading);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--color-bg) 40%, transparent);
  transition:
    border-color var(--transition-base),
    background var(--transition-base),
    color var(--transition-base);
}

.home-card-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-muted);
}

.home-card--accent .section-kicker {
  color: color-mix(in srgb, var(--color-text-on-accent) 65%, var(--color-accent) 35%);
}

.home-card--accent .home-card-content h2,
.home-card--accent .home-card-content > p {
  color: var(--color-text-on-accent);
}

.home-card--accent .home-card-link {
  color: var(--color-text-on-accent);
  border-color: color-mix(in srgb, var(--color-text-on-accent) 35%, transparent);
  background: color-mix(in srgb, var(--color-text-on-accent) 12%, transparent);
}

.home-card--accent .home-card-link:hover {
  border-color: var(--color-text-on-accent);
  background: color-mix(in srgb, var(--color-text-on-accent) 22%, transparent);
  color: var(--color-text-on-accent);
}

/* --------------------------------------------------------------------------
   Product grid
   -------------------------------------------------------------------------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.product-card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  backdrop-filter: blur(16px) saturate(170%);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 24px var(--color-shadow);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.product-card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border));
  box-shadow: 0 8px 32px var(--color-shadow-md);
  transform: translateY(-2px);
}

.product-card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--color-heading);
}

.product-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.product-card-link {
  display: inline-block;
  margin-top: 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

.product-card-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Feature grid
   -------------------------------------------------------------------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.feature-card {
  padding: 1.5rem 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-card-bg);
  backdrop-filter: blur(16px) saturate(170%);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  box-shadow: 0 4px 20px var(--color-shadow);
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 650;
  margin-bottom: 0.45rem;
  color: var(--color-heading);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   Pipeline steps
   -------------------------------------------------------------------------- */

.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.pipeline-step {
  padding: 1.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.pipeline-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-accent-muted);
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.pipeline-step h3 {
  font-size: 1rem;
  font-weight: 650;
  margin-bottom: 0.4rem;
  color: var(--color-heading);
}

.pipeline-step p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   CTA blocks
   -------------------------------------------------------------------------- */

.home-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  position: relative;
}

.cta-button {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--color-accent);
  color: var(--color-text-on-accent);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition:
    background var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.cta-button:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 22px var(--color-shadow-md);
  transform: translateY(-1px);
}

.cta-button--secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
}

.cta-button--secondary:hover {
  background: var(--color-accent-muted);
  color: var(--color-accent-hover);
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
  box-shadow: none;
}

.cta-section {
  margin-top: 3rem;
  padding: 2.5rem;
  background: var(--color-cta-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: var(--max-width);
  position: relative;
  overflow: hidden;
}

.cta-section h2 {
  font-size: 1.5rem;
  font-weight: 650;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
  color: var(--color-heading);
  position: relative;
}

.cta-section p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  position: relative;
}

/* --------------------------------------------------------------------------
   Section landing
   -------------------------------------------------------------------------- */

.section-landing-header {
  margin-bottom: 1.5rem;
}

.section-landing-body {
  margin-bottom: 2rem;
}

.section-children h2 {
  font-size: 1.25rem;
  font-weight: 650;
  margin-bottom: 1rem;
  color: var(--color-heading);
}

.section-children-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.section-children-list li {
  margin-bottom: 0.85rem;
  line-height: 1.5;
}

.section-children-list a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
}

.section-children-list a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.section-children-desc {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

.section-empty {
  color: var(--color-text-secondary);
  font-style: italic;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Article pages
   -------------------------------------------------------------------------- */

.article-header {
  margin-bottom: 2.5rem;
  max-width: var(--max-width);
}

.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: 1.5rem;
  font-weight: 450;
  transition: color var(--transition-base);
}

.back-link:hover {
  color: var(--color-accent);
}

.article-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.12;
  margin-bottom: 0.75rem;
  color: var(--color-heading);
}

.article-description {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.article-byline {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-top: 0.75rem;
  letter-spacing: 0.01em;
}

.article-byline a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

.article-byline a:hover {
  text-decoration: underline;
}

.toc {
  max-width: var(--max-width);
  margin-bottom: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  box-shadow: 0 4px 24px var(--color-shadow);
}

.toc-toggle {
  display: block;
  padding: 0.75rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  list-style: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.toc-toggle::-webkit-details-marker {
  display: none;
}

.toc-toggle::before {
  content: "▶";
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 0.6rem;
  transition: transform var(--transition-base);
}

.toc[open] > .toc-toggle::before {
  transform: rotate(90deg);
}

.toc #TableOfContents {
  padding: 0 1.25rem 0.75rem;
}

.toc #TableOfContents ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc #TableOfContents > ul > li {
  margin-bottom: 0.25rem;
}

.toc #TableOfContents > ul > li > a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  display: inline-block;
  padding: 0.15em 0 0.15em 0.5em;
  border-left: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.toc #TableOfContents > ul > li > a:hover {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.toc #TableOfContents > ul > li > ul {
  padding-left: 1rem;
  margin-top: 0.15rem;
}

.toc #TableOfContents > ul > li > ul > li {
  margin-bottom: 0.15rem;
}

.toc #TableOfContents > ul > li > ul > li > a {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  display: inline-block;
  padding: 0.15em 0 0.15em 0.5em;
  border-left: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.toc #TableOfContents > ul > li > ul > li > a:hover {
  color: var(--color-accent);
  border-left-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.article-intro {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  border-left: 3px solid var(--color-accent);
  background: var(--color-accent-muted);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 2rem;
  max-width: var(--max-width);
}

.article-body {
  max-width: var(--max-width);
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 3rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  color: var(--color-heading);
}

.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 2.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-heading);
}

.article-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--color-heading);
}

.article-body p {
  margin-bottom: 1.25em;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body > p:first-of-type {
  font-size: 1.15rem;
  line-height: 1.75;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.1rem;
  padding-left: 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body li {
  margin-bottom: 0.4rem;
}

.article-body li > ul,
.article-body li > ol {
  margin-top: 0.4rem;
  margin-bottom: 0;
}

.article-body blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  color: var(--color-text-secondary);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  background: var(--color-accent-muted);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: 0 4px 16px var(--color-shadow);
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.84em;
  background: var(--color-code-bg);
  padding: 0.2em 0.45em;
  border-radius: 4px;
  border: 1px solid var(--color-border-subtle);
  font-weight: 500;
  color: var(--color-accent-hover);
}

.article-body pre {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  overflow-x: auto;
  margin: 2rem 0;
  line-height: 1.6;
  color: var(--color-text);
  box-shadow: 0 4px 20px var(--color-shadow);
}

.article-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  border: none;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: inherit;
}

.article-body .mermaid {
  margin: 2rem 0;
  overflow-x: auto;
  text-align: center;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 16px var(--color-shadow);
}

.article-body th,
.article-body td {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.article-body th {
  background: var(--color-bg-subtle);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 3rem 0;
}

.article-body strong {
  font-weight: 600;
  color: var(--color-heading);
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  transition:
    text-decoration-color var(--transition-base),
    color var(--transition-base);
}

.article-body a:hover {
  text-decoration-color: var(--color-accent-hover);
  color: var(--color-accent-hover);
}

.article-nav {
  max-width: var(--max-width);
  display: flex;
  justify-content: space-between;
  margin-top: 3.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  backdrop-filter: blur(12px) saturate(170%);
  -webkit-backdrop-filter: blur(12px) saturate(170%);
  gap: 1rem;
}

.nav-prev,
.nav-next {
  font-size: 0.9rem;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base), transform var(--transition-base);
}

.nav-prev:hover,
.nav-next:hover {
  text-decoration: underline;
  color: var(--color-accent-hover);
}

.nav-prev:hover {
  transform: translateX(-2px);
}

.nav-next:hover {
  transform: translateX(2px);
}

.nav-next {
  margin-left: auto;
  text-align: right;
}

.article-cta {
  max-width: var(--max-width);
  margin-top: 3rem;
  padding: 2rem;
  background: var(--color-cta-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px) saturate(170%);
  -webkit-backdrop-filter: blur(12px) saturate(170%);
}

.article-cta p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
}

.article-cta a {
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  transition: text-decoration-color var(--transition-base), color var(--transition-base);
}

.article-cta a:hover {
  text-decoration-color: var(--color-accent-hover);
  color: var(--color-accent-hover);
}

/* --------------------------------------------------------------------------
   Hiring CTA (site-wide partial)
   -------------------------------------------------------------------------- */

.hiring-cta {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--color-border) 85%, transparent);
  max-width: 42rem;
}

.hiring-cta__text {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
  opacity: 0.92;
  margin: 0;
}

.hiring-cta__link {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: color-mix(in srgb, var(--color-text-secondary) 35%, transparent);
  transition: color var(--transition-base), text-decoration-color var(--transition-base);
}

.hiring-cta__link:hover {
  color: var(--color-accent);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
}

.home-sections .hiring-cta {
  margin-top: 2.5rem;
  padding: 1rem 1.25rem;
  border-top: none;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-border-subtle) 55%, transparent);
  max-width: none;
}

/* --------------------------------------------------------------------------
   Operations page
   -------------------------------------------------------------------------- */

.operations-shell .back-link {
  margin-top: 3rem;
}

.operations-intro {
  margin-bottom: 2rem;
}

.operations-intro p:last-child {
  margin-bottom: 0;
}

.operations-summary {
  margin-bottom: 2rem;
}

.operations-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.operations-stat {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  backdrop-filter: blur(16px) saturate(170%);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  box-shadow: 0 4px 20px var(--color-shadow);
}

.operations-stat strong {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
  color: var(--color-heading);
}

.operations-stat p {
  font-size: 0.86rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.operations-stat a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.operations-stat a:hover {
  text-decoration: underline;
  color: var(--color-accent-hover);
}

.operations-stat-label {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.operations-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.operations-panel {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  box-shadow: 0 6px 28px var(--color-shadow);
}

.operations-panel--full {
  margin-bottom: 1.25rem;
}

.operations-panel-header {
  margin-bottom: 1rem;
}

.operations-panel-header h2 {
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-heading);
}

.agent-callout-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.operations-panel-note {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.operations-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.operations-meta div {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-subtle);
}

.operations-meta dt {
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.operations-meta dd {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
}

.operations-list,
.operations-link-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.operations-list li,
.operations-link-list li {
  padding: 0.9rem 0;
  border-top: 1px solid var(--color-border);
}

.operations-list li:first-child,
.operations-link-list li:first-child {
  border-top: none;
  padding-top: 0;
}

.operations-list-date {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.operations-list-text {
  display: block;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--color-text);
}

.operations-list-context {
  display: inline-block;
  margin-top: 0.35rem;
  padding: 0.15rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
}

.operations-freshness-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.operations-freshness-legend li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.operations-freshness-swatch {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid var(--color-border-subtle);
}

.operations-freshness-swatch--le7 {
  background: color-mix(in srgb, var(--color-accent) 55%, var(--color-card-bg));
}

.operations-freshness-swatch--le30 {
  background: color-mix(in srgb, var(--color-accent) 28%, var(--color-card-bg));
}

.operations-freshness-swatch--le90 {
  background: color-mix(in srgb, var(--color-heading) 18%, var(--color-card-bg));
}

.operations-freshness-swatch--gt90 {
  background: var(--color-bg-subtle);
}

.operations-freshness-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.25rem;
}

.operations-freshness-section {
  min-width: 0;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-subtle);
}

.operations-freshness-section-title {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--color-heading);
}

.operations-freshness-rows {
  list-style: none;
  margin: 0;
  padding: 0;
}

.operations-freshness-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.65rem 0;
  border-top: 1px solid var(--color-border);
}

.operations-freshness-row:first-child {
  border-top: none;
  padding-top: 0;
}

.operations-freshness-title {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-text);
  text-decoration: none;
}

.operations-freshness-title:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.operations-freshness-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
}

.operations-freshness-section-tag {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.operations-freshness-bucket {
  display: inline-block;
  padding: 0.12rem 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
}

.operations-freshness-bucket--le7 {
  background: color-mix(in srgb, var(--color-accent) 45%, transparent);
  color: var(--color-heading);
}

.operations-freshness-bucket--le30 {
  background: color-mix(in srgb, var(--color-accent) 22%, transparent);
  color: var(--color-heading);
}

.operations-freshness-bucket--le90 {
  background: color-mix(in srgb, var(--color-heading) 12%, transparent);
  color: var(--color-text);
}

.operations-freshness-bucket--gt90 {
  background: var(--color-card-bg);
  color: var(--color-text-secondary);
}

.operations-link-list a,
.operations-coverage-card {
  color: inherit;
  text-decoration: none;
}

.operations-link-list a {
  color: var(--color-accent);
  font-weight: 500;
}

.operations-link-list a:hover {
  text-decoration: underline;
  color: var(--color-accent-hover);
}

.operations-coverage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.operations-coverage-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-subtle);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.operations-coverage-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 28px var(--color-shadow-md);
  transform: translateY(-2px);
}

.operations-coverage-order {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-accent-muted);
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 600;
}

.operations-coverage-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  line-height: 1.35;
  color: var(--color-heading);
}

.operations-coverage-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   GoAT diagrams
   -------------------------------------------------------------------------- */

.article-body .goat.svg-container {
  margin: 2rem 0;
  overflow-x: auto;
}

.article-body .goat.svg-container svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.article-body .goat.svg-container svg text {
  fill: var(--color-text);
}

.article-body .goat.svg-container svg path,
.article-body .goat.svg-container svg line {
  stroke: var(--color-text-secondary);
}

.article-body .goat.svg-container svg polygon {
  fill: var(--color-text-secondary);
  stroke: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-border-subtle);
  padding: 3rem 1.5rem;
  margin-top: 4rem;
  background: var(--color-bg);
}

.footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.footer-description {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 500px;
}

.footer-description a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
}

.footer-description a:hover {
  text-decoration: underline;
  color: var(--color-accent-hover);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-shrink: 0;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 450;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-build-time {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.copyright {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Primary navigation—mobile
   -------------------------------------------------------------------------- */

@media (max-width: 767px) {
  body:has(#site-nav-toggle:checked) {
    overflow: hidden;
  }

  .site-header {
    position: sticky;
  }

  .header-inner {
    gap: 0.75rem;
    align-items: center;
    min-height: 2.75rem;
  }

  .site-logo {
    min-width: 0;
  }

  .site-nav-menu-btn {
    display: inline-flex;
    margin-left: auto;
    position: relative;
    z-index: 110;
  }

  .site-nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 90;
    margin: 0;
    background: rgb(0, 0, 0, 0.55);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity var(--transition-base),
      visibility var(--transition-base);
  }

  .site-header:has(#site-nav-toggle:checked) .site-nav-scrim {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(20rem, 88vw);
    max-width: 100%;
    z-index: 100;
    flex-direction: column;
    align-items: stretch;
    align-content: flex-start;
    gap: 0;
    padding: 4.5rem 1.25rem 1.5rem;
    margin: 0;
    background: var(--color-bg-subtle);
    border-left: 1px solid var(--color-border);
    box-shadow: -4px 0 32px var(--color-shadow-md);
    transform: translateX(100%);
    transition: transform var(--transition-base), visibility var(--transition-base);
    overflow-y: auto;
    visibility: hidden;
    pointer-events: none;
    -webkit-overflow-scrolling: touch;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header:has(#site-nav-toggle:checked) .site-nav {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav .nav-link {
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--color-border-subtle);
    font-size: 0.95rem;
    color: var(--color-text);
  }

  .site-nav .nav-link:last-of-type {
    border-bottom: none;
  }
}

/* --------------------------------------------------------------------------
   Primary navigation—desktop
   -------------------------------------------------------------------------- */

@media (min-width: 768px) {
  .site-nav-menu-btn {
    display: none;
  }

  .site-nav-scrim {
    display: none !important;
  }

  .site-nav {
    position: static;
    width: auto;
    max-width: none;
    flex-direction: row;
    align-items: center;
    padding: 0;
    margin: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    transform: none;
    visibility: visible;
    pointer-events: auto;
    overflow: visible;
  }

  .site-nav .nav-link {
    padding: 0;
    border: none;
    color: var(--color-text-secondary);
  }
}

/* --------------------------------------------------------------------------
   Responsive—640px
   -------------------------------------------------------------------------- */

@media (max-width: 640px) {
  .page-container {
    padding: 2.5rem 1.25rem;
  }

  .hero-section-inner {
    padding: 2.5rem 1.25rem 3rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .article-header h1 {
    font-size: 1.75rem;
  }

  .home-card-content {
    padding: 2rem 1.5rem;
  }

  .product-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .pipeline-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-section {
    margin-top: 2rem;
    padding: 1.75rem;
  }

  .cta-section h2 {
    font-size: 1.25rem;
  }

  .operations-grid {
    grid-template-columns: 1fr;
  }

  .operations-panel,
  .operations-stat,
  .operations-coverage-card {
    padding: 1rem;
  }

  .footer-content {
    flex-direction: column;
    gap: 1rem;
  }

  .article-body table {
    display: block;
    overflow-x: auto;
  }

  .site-header {
    padding: 0.875rem 1.25rem;
  }
}

/* --------------------------------------------------------------------------
   Responsive—480px
   -------------------------------------------------------------------------- */

@media (max-width: 480px) {
  .pipeline-grid {
    grid-template-columns: 1fr;
  }
}