:root {
  --bg-canvas: #faf6ef;
  --bg-surface: #fffdf9;
  --bg-surface-hover: #f5efe6;
  --text-primary: #2b211a;
  --text-muted: #5c4b3f;
  --accent-primary: #c2562e;
  --accent-secondary: #6b7a3a;
  --border-subtle: rgba(43, 33, 26, 0.14);
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 12px 32px -4px rgba(43, 33, 26, 0.08);
  --shadow-hover: 0 20px 40px -6px rgba(43, 33, 26, 0.15);
  --glow-accent: 0 0 24px -4px rgba(194, 86, 46, 0.22);
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, Consolas, "SFMono-Regular", Menlo, monospace;
}

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

html, body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease-kinetic);
}

a:hover {
  color: var(--text-primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
  object-fit: cover;
}

/* Header - strictly non-sticky, far-left brand */
.site-header {
  position: relative;
  z-index: 20;
  width: 100%;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.3s ease;
}

.site-header.header-over-hero {
  position: absolute;
  top: 0;
  left: 0;
  background-color: transparent;
  border-bottom: 1px solid rgba(255, 253, 249, 0.2);
}

.site-header.header-over-hero .brand-link,
.site-header.header-over-hero .nav-list a,
.site-header.header-over-hero .menu-toggle {
  color: #fffdf9;
}

.site-header.scrolled-surface {
  background-color: var(--bg-surface);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.15rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  margin-right: auto;
}

.brand-mark {
  width: 14px;
  height: 14px;
  background-color: var(--accent-primary);
  display: inline-block;
  border: 2px solid var(--accent-secondary);
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list a {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  border-bottom-color: var(--accent-primary);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid currentColor;
  color: var(--text-primary);
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
}

/* Hero Full Viewport */
.hero-full {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fffdf9;
  padding: 6rem 1.5rem 4rem;
  background-color: #1f1712;
  overflow: hidden;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(26, 18, 13, 0.72) 0%, rgba(43, 33, 26, 0.84) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 780px;
  margin: 0 auto;
}

.eyebrow, .mono-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-primary);
  display: block;
  margin-bottom: 0.65rem;
}

.hero-full .eyebrow {
  color: #f3c6b6;
}

h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.5rem);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.015em;
}

h3 {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.hero-lead {
  font-size: 1.15rem;
  max-width: 62ch;
  margin: 0 auto 2rem;
  color: rgba(255, 253, 249, 0.92);
}

/* Square-ended Terracotta Outline Buttons */
.btn-terracotta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.85rem 1.6rem;
  border: 2px solid var(--accent-primary);
  background-color: transparent;
  color: var(--accent-primary);
  text-decoration: none;
  border-radius: 0;
  cursor: pointer;
  transition: transform 0.25s var(--ease-kinetic), background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.hero-full .btn-terracotta {
  color: #fffdf9;
  border-color: #e37b54;
  background-color: rgba(194, 86, 46, 0.22);
}

.btn-terracotta:hover {
  background-color: var(--accent-primary);
  color: #fffdf9;
  transform: translateY(-3px);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.btn-secondary {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

.btn-secondary:hover {
  background-color: var(--accent-secondary);
  color: #fffdf9;
}

/* Layout & Reading Column */
.page-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
}

.section-block {
  padding: 4.25rem 1.5rem;
  position: relative;
}

.radial-terracotta {
  background: radial-gradient(circle at 50% 45%, rgba(194, 86, 46, 0.11) 0%, rgba(250, 246, 239, 0) 72%);
}

.container-wide {
  max-width: 1200px;
  margin: 0 auto;
}

.prose-column {
  max-width: 68ch;
  margin: 0 auto;
}

.prose-column p {
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.prose-column h2 {
  margin-top: 2.5rem;
}

/* Pull Quote */
.pull-quote {
  max-width: 76ch;
  margin: 2.5rem auto;
  padding: 1.5rem 2rem;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  border-left: 4px solid var(--accent-primary);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-primary);
}

.pull-quote cite {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* Breakout Visual Comparisons & Cards */
.breakout-grid {
  max-width: 1140px;
  margin: 2.5rem auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.card-evidence {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  padding: 1.65rem;
  border-radius: 0;
  transition: transform 0.35s var(--ease-kinetic), box-shadow 0.35s var(--ease-kinetic);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-evidence:hover {
  transform: translateY(-5px) scale(1.01);
  box-shadow: var(--shadow-hover), var(--glow-accent);
}

.card-media {
  margin: -1.65rem -1.65rem 1.25rem -1.65rem;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: #e9e1d6;
}

.card-media.square-thumb {
  aspect-ratio: 1 / 1;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Badges (Only rounded elements) */
.badge-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background-color: rgba(194, 86, 46, 0.14);
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
  width: fit-content;
}

.badge-pill.olive {
  background-color: rgba(107, 122, 58, 0.16);
  color: var(--accent-secondary);
}

/* Split Comparison Architecture */
.split-layout {
  max-width: 1140px;
  margin: 2.25rem auto;
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 2rem;
  align-items: start;
}

.definition-rail {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  padding: 1.5rem;
}

.definition-rail dl {
  display: grid;
  gap: 1rem;
}

.definition-rail dt {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--accent-primary);
}

.definition-rail dd {
  font-size: 0.92rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}

/* Checklist Component */
.checklist-box {
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  padding: 1.75rem;
  margin: 2rem auto;
  max-width: 68ch;
}

.checklist-box ul {
  list-style: none;
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.checklist-box li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
}

.check-marker {
  font-family: var(--font-mono);
  color: var(--accent-secondary);
  font-weight: 700;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  max-width: 1140px;
  margin: 2rem auto;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
  padding: 1.25rem;
}

.table-caption-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: block;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 640px;
}

th, td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  background-color: rgba(43, 33, 26, 0.03);
}

/* Forms & Lab Note Output */
.form-grid {
  display: grid;
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: 0;
}

.lab-note-output {
  background-color: #f3ede2;
  border: 1px solid var(--accent-secondary);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  white-space: pre-wrap;
  margin-top: 1.5rem;
}

/* Scroll Reveal */
.reveal-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.65s var(--ease-kinetic), transform 0.65s var(--ease-kinetic);
}

.reveal-item.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.site-footer {
  background-color: #211914;
  color: #e6ddd3;
  padding: 3.5rem 1.5rem 2.5rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.site-footer a {
  color: #f3c6b6;
}

.site-footer h3 {
  color: #fffdf9;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-legal-bar {
  max-width: 1200px;
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 253, 249, 0.14);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .menu-toggle {
    display: inline-block;
  }
  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-elevation);
    border-bottom: 2px solid var(--accent-primary);
  }
  .site-header.header-over-hero .nav-list a {
    color: var(--text-primary);
  }
  .nav-list.nav-open {
    display: flex;
  }
  .split-layout {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}