/* ─── RESET & BASE ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Backgrounds */
  --colour-bg-primary:    #0A0F1C;
  --colour-bg-secondary:  #0F1829;
  --colour-bg-card:       #131D2E;
  --colour-bg-card-hover: #1A2540;
  --colour-bg-code:       rgba(41, 98, 255, 0.07);

  /* Borders */
  --colour-border:        rgba(255, 255, 255, 0.08);
  --colour-border-accent: rgba(41, 98, 255, 0.4);

  /* Text */
  --colour-text-primary:  #FFFFFF;
  --colour-text-secondary:#E2DEDB;
  --colour-text-tertiary: #9BA8BF;
  --colour-text-muted:    #5D6B82;
  --colour-text-on-light: #1A2540;
  --colour-text-code:     #A8C4FF;

  /* Accent & Interactive */
  --colour-accent:        #2962FF;
  --colour-accent-light:  #5B8AFF;
  --colour-accent-italic: #6B9FFF;
  --colour-cta-bg:        #2962FF;
  --colour-cta-bg-hover:  #1A4FD6;
  --colour-cta-outline:   rgba(255, 255, 255, 0.2);
  --colour-status-poc:    #2962FF;
  --colour-status-ref:    #1A3A5C;

  /* Fonts */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Spacing */
  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  24px;
  --space-lg:  40px;
  --space-xl:  64px;
  --space-2xl: 96px;
  --space-3xl: 128px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--colour-bg-primary);
  color: var(--colour-text-secondary);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

/* ─── NOISE TEXTURE OVERLAY ─────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 9999;
}

/* ─── SCROLLBAR ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--colour-bg-primary); }
::-webkit-scrollbar-thumb { background: var(--colour-bg-card-hover); border-radius: 2px; }

/* ─── TYPOGRAPHY ─────────────────────────────────────────── */
h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  color: var(--colour-text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-size: clamp(2.8rem, 6vw, 5rem);
}

h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--colour-text-primary);
  line-height: 1.15;
  letter-spacing: -0.01em;
  /* font-size: clamp(1.9rem, 3.5vw, 3.25rem); */
  font-size: clamp(1.25rem, 2.3vw, 2.2rem);
}

h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--colour-text-secondary);
  line-height: 1.25;
  font-size: clamp(1.25rem, 2vw, 2rem);
}

h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--colour-text-secondary);
  line-height: 1.35;
  font-size: clamp(1.1rem, 1.5vw, 1.375rem);
}

p { 
  /* max-width: 72ch; */
  max-width: none;
  line-height: 1.75;
}
a { color: var(--colour-accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--colour-accent-light); }

/* ─── FOCUS RINGS ────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 3px;
}

/* ─── TRANSITIONS ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}

/* ─── SECTION LABEL ──────────────────────────────────────── */
.label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-accent);
  line-height: 1.5;
}

.label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

/* ─── LAYOUT ─────────────────────────────────────────────── */
.container       { max-width: 1120px; margin: 0 auto; padding: 0 var(--space-lg); }
.container--wide { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-lg); }
.container--narrow { max-width: 760px; margin: 0 auto; padding: 0 var(--space-lg); }

section { padding: var(--space-xl) 0; position: relative; }

/* ─── INTRO-SPLIT HEADER LAYOUT ──────────────────────────── */
.capabilities-header,
.evidence-header,
.research-header,
.proof-header,
.explore-header,
.thesis-problem {
  width: 100%;
  max-width: none;
  /* display: grid; */
  /* grid-template-columns: 5fr 7fr; */
  gap: 1.25rem var(--space-xl);
  align-items: start;
}

.capabilities-header .label,
.research-header .label,
.proof-header .label,
.explore-header .label,
.thesis-problem .label {
  /* grid-column: 1; */
  margin-bottom: 0;
  width: 100%;
  max-width: none;
}

.capabilities-header h2,
.research-header h2,
.proof-header h2,
.explore-header h2,
.thesis-problem h2 {
  grid-column: 1;
  max-width: none;
  margin-bottom: 0;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.capabilities-header p,
.research-header p,
.proof-header p,
.explore-header p {
  /* grid-column: 2; */
  /* grid-row: 1 / -1; */
  /* align-self: center; */
  max-width: none;
  margin-bottom: 0;
}

.thesis-problem p {
  /* grid-column: 2; */
  max-width: none;
  margin-bottom: 1rem;
}
.thesis-problem p:last-child { margin-bottom: 0; }

.evidence-header,
.argument-header,
.contrarian-header,
.team-header,
.products-header {
  width: 100%;
  max-width: none;
  align-items: start;
}

.evidence-header,
.argument-header,
.contrarian-header,
.team-header {
  /* display: grid; */
  /* grid-template-columns: minmax(10rem, auto) minmax(0, 1fr); */
  gap: 0.75rem var(--space-xl);
  /* align-items: end; */
}

.evidence-header .label,
.argument-header .label,
.contrarian-header .label,
.team-header .label {
  /* grid-column: 1; */
  margin-bottom: 0;
}

.evidence-header h2,
.argument-header h2,
.contrarian-header h2,
.team-header h2 {
  /* grid-column: 2; */
  max-width: none;
  margin-bottom: 0;
  padding-top: 1rem;
  padding-bottom: 1rem;  
}

/* ─── NAV ────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
}

nav.scrolled {
  background: rgba(10, 15, 28, 0.85);
  border-color: var(--colour-border);
  backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-sans);
  /* font-size: 0.9rem; */
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--colour-text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-right: 1rem;
}

.nav-logo a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
}

.nav-logo a:hover { color: var(--colour-text-primary); }
.nav-logo img { height: 28px; width: 28px; display: block; }
.nav-logo span { color: var(--colour-accent); }

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

.nav-links a {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--colour-text-tertiary);
  transition: color 0.2s;
  text-transform: none;
}

.nav-links a:hover { color: var(--colour-text-primary); }

.nav-links a.nav-active {
  color: var(--colour-text-primary);
  border-bottom: 2px solid var(--colour-accent);
  padding-bottom: 2px;
}

.nav-cta {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--colour-text-primary) !important;
  background: var(--colour-cta-bg);
  border: 1px solid var(--colour-accent);
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  transition: background 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
  background: var(--colour-cta-bg-hover) !important;
  box-shadow: 0 4px 16px rgba(41, 98, 255, 0.3);
  color: var(--colour-text-primary) !important;
}

.nav-links a.nav-cta.nav-active {
  border-bottom: none;
  padding-bottom: 0.5rem;
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--colour-text-tertiary);
  transition: transform 0.3s ease, opacity 0.2s ease, background 0.2s;
}

.nav-burger:hover span { background: var(--colour-text-primary); }
nav.open .nav-burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
nav.open .nav-burger span:nth-child(2) { opacity: 0; }
nav.open .nav-burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ─── CTA BUTTONS ────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--colour-cta-bg);
  color: var(--colour-text-primary);
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--colour-accent);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background: var(--colour-cta-bg-hover);
  color: var(--colour-text-primary);
  box-shadow: 0 4px 16px rgba(41, 98, 255, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: transparent;
  color: var(--colour-text-secondary);
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  border: 1px solid var(--colour-cta-outline);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, transform 0.15s;
}

.btn-secondary:hover {
  border-color: var(--colour-accent);
  color: var(--colour-accent-light);
  transform: translateY(-1px);
}

/* ─── HERO ───────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
  background: var(--colour-bg-primary);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(41, 98, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 98, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
}

.hero-accent {
  position: absolute;
  top: 20%; right: -5%;
  width: 50vw; height: 50vw;
  max-width: 700px; max-height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41, 98, 255, 0.06) 0%, transparent 65%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.8s 0.1s forwards;
}

.hero-headline {
  padding-left: 3rem;
  /* font-size: clamp(2.8rem, 6vw, 5rem); */
  font-size: clamp(2.24rem, 4.8vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--colour-text-primary);
  font-family: var(--font-serif);
  opacity: 0;
  animation: fadeUp 0.9s 0.25s forwards;
}

.hero-headline em {
  font-style: italic;
  color: var(--colour-accent-italic);
}

.hero-sub {
  margin-top: var(--space-md);
  font-size: 17px;
  font-weight: 400;
  color: var(--colour-text-tertiary);
  max-width: 68ch;
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.9s 0.45s forwards;
}

.hero-sub strong { color: var(--colour-text-secondary); font-weight: 400; }

.hero-engage {
  margin-top: var(--space-sm);
  font-size: 17px;
  color: var(--colour-text-secondary);
  max-width: 68ch;
  line-height: 1.75;
  opacity: 0;
  animation: fadeUp 0.9s 0.55s forwards;
}

.hero-engage strong { color: var(--colour-text-primary); font-weight: 400; }

.hero-problem {
  margin-top: var(--space-sm);
  font-size: 17px;
  color: var(--colour-text-secondary);
  max-width: 68ch;
  line-height: 1.75;
  opacity: 0;
  animation: fadeUp 0.9s 0.4s forwards;
}

.hero-problem strong {
  font-weight: 400;
  color: var(--colour-text-primary);
}

/* ─── FORMAL INVARIANT BLOCK ─────────────────────────────── */
.hero-theorem {
  margin-top: var(--space-lg);
  padding: var(--space-md) 28px;
  border: 1px solid var(--colour-border-accent);
  border-left: 3px solid var(--colour-accent);
  background: var(--colour-bg-code);
  border-radius: 6px;
  max-width: 640px;
  opacity: 0;
  animation: fadeUp 0.9s 0.65s forwards;
}

.hero-theorem .theorem-label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--colour-accent);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--colour-border);
}

.hero-theorem p {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--colour-text-code);
  line-height: 1.7;
  max-width: none;
}

.hero-theorem p .op { color: var(--colour-accent-light); }
.hero-theorem p .var { color: var(--colour-text-tertiary); font-style: italic; }
.hero-theorem p .keyword { color: var(--colour-accent-light); }
.hero-theorem p .comment { color: var(--colour-text-muted); }

/* ─── HERO CTAS ──────────────────────────────────────────── */
.hero-ctas {
  margin-top: var(--space-lg);
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.9s 0.8s forwards;
}

/* ─── PERSONA SELECTOR ───────────────────────────────────── */
.persona-selector {
  margin-top: var(--space-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  max-width: 720px;
  opacity: 0;
  animation: fadeUp 0.9s 0.9s forwards;
}

.persona-card {
  display: flex;
  flex-direction: column;
  background: var(--colour-bg-card);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  padding: 20px 24px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}

.persona-card:hover {
  border-color: var(--colour-accent);
  background: var(--colour-bg-card-hover);
  color: inherit;
}

.persona-card-role {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--colour-accent);
  margin-bottom: 6px;
}

.persona-card-title {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 4px;
  line-height: 1.3;
}

.persona-card-desc {
  font-size: 13px;
  color: var(--colour-text-tertiary);
  line-height: 1.5;
  max-width: none;
}

.persona-card-arrow {
  position: absolute;
  top: 20px;
  right: 24px;
  color: var(--colour-accent);
  font-size: 1rem;
  font-family: var(--font-sans);
}

.persona-formal-link {
  display: block;
  margin-top: var(--space-sm);
  font-size: 13px;
  color: var(--colour-accent);
  font-weight: 500;
  font-family: var(--font-sans);
  text-decoration: none;
  max-width: 720px;
  opacity: 0;
  animation: fadeUp 0.9s 1s forwards;
}

.persona-formal-link:hover { color: var(--colour-accent-light); text-decoration: underline; }

/* legacy pills hidden */
.hero-audiences { display: none; }
.hero-formal-note { display: none; }

/* ─── HERO SCROLL INDICATOR ──────────────────────────────── */
.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: fadeIn 1s 1.5s forwards;
}

.hero-scroll span {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
}

.scroll-line {
  width: 1px;
  height: 2.5rem;
  background: linear-gradient(to bottom, var(--colour-text-muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ─── DIVIDER ────────────────────────────────────────────── */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--colour-border), transparent);
}

/* ─── THESIS SECTION ─────────────────────────────────────── */
#thesis { padding: var(--space-xl) 0; background: var(--colour-bg-secondary); }

.thesis-problem {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--colour-border);
}

.thesis-problem .label { margin-bottom: 1.25rem; }

.thesis-problem p {
  color: var(--colour-text-tertiary);
  margin-bottom: 1.1rem;
  font-size: 17px;
}

.thesis-problem p strong { color: var(--colour-text-secondary); font-weight: 400; }

.thesis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.thesis-left .label { margin-bottom: 1.5rem; }
.thesis-left h2 { margin-bottom: 1.5rem; }
.thesis-left p { color: var(--colour-text-tertiary); margin-bottom: 1.25rem; }
.thesis-left p strong { color: var(--colour-text-secondary); font-weight: 400; }

/* ─── AUDIENCE TABS ──────────────────────────────────────── */
.audience-tabs {
  margin-top: var(--space-lg);
}

.audience-tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--colour-border);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.audience-tab-btn {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--colour-text-muted);
  background: none;
  border: none;
  padding: 10px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
  text-align: left;
}

.audience-tab-btn:hover { color: var(--colour-text-tertiary); }

.audience-tab-btn.active {
  color: var(--colour-text-primary);
  border-bottom-color: var(--colour-accent);
}

.audience-tab-panel {
  display: none;
}

.audience-tab-panel.active {
  display: block;
}

.audience-tab-panel h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.audience-tab-panel p {
  font-size: 0.95rem;
  color: var(--colour-text-tertiary);
  max-width: none;
  margin-bottom: 0.85rem;
  line-height: 1.7;
}

.audience-tab-panel p strong { color: var(--colour-text-secondary); font-weight: 400; }
.audience-tab-panel p:last-child { margin-bottom: 0; }

/* Legacy audience cards — hide, replaced by tabs */
.audience-cards { display: none; }

/* ─── THESIS OBSERVATION CARDS ───────────────────────────── */
.thesis-right {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-top: 0.5rem;
}

.thesis-card {
  padding: 1.75rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}

.thesis-card:hover { border-color: var(--colour-bg-card-hover); transform: translateX(4px); }

.thesis-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--colour-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s;
}

.thesis-card:hover::before { transform: scaleY(1); }

.thesis-card-num {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--colour-accent);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--colour-border);
}

.thesis-card h3 {
  font-size: 1.1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.5rem;
  margin-top: var(--space-xs);
}

.thesis-card p { font-size: 15px; color: var(--colour-text-tertiary); max-width: none; line-height: 1.7; }

/* ─── SEPARATOR ──────────────────────────────────────────── */
.separator {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 4rem 0;
}

.separator-line { flex: 1; height: 1px; background: var(--colour-border); }

.separator-text {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  white-space: nowrap;
}

/* ─── WORK WITH US ───────────────────────────────────────── */
#work-with-us { padding: var(--space-xl) 0; background: var(--colour-bg-primary); }

.capabilities-header { margin-bottom: 3.5rem; }
.capabilities-header p { color: var(--colour-text-tertiary); font-size: 1.05rem; }
.capabilities-header p strong { color: var(--colour-text-secondary); font-weight: 400; }

.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: var(--space-md);
}

/* ─── SERVICE / FEATURE CARD ─────────────────────────────── */
.capability-card {
  padding: 28px 32px;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  transition: border-color 0.2s, transform 0.2s;
}

.capability-card:hover { border-color: var(--colour-border-accent); transform: translateY(-2px); }

.capability-card-title {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-accent);
  margin-bottom: 0.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
}

.capability-card-title::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

.capability-card h3 {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.85rem;
  line-height: 1.35;
}

.capability-card p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  max-width: none;
  margin-bottom: 0.65rem;
  line-height: 1.75;
}

.capability-card .capability-for {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.35rem;
}

.capability-card .capability-outcome {
  font-size: 14px;
  color: var(--colour-text-secondary);
  margin-bottom: 0;
}

.capability-card .capability-outcome strong { font-weight: 400; }

.capabilities-bridge {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  max-width: 72ch;
}

.capabilities-bridge strong { color: var(--colour-text-secondary); font-weight: 400; }

/* ─── REGULATORY EVIDENCE ─────────────────────────────────── */
#evidence { padding: var(--space-xl) 0; background: var(--colour-bg-secondary); }

.evidence-header { margin-bottom: var(--space-lg); }

/* ─── BLOCKQUOTE / PULL QUOTE ────────────────────────────── */
.evidence-quote {
  padding-left: 28px;
  border-left: 3px solid var(--colour-accent);
  margin-bottom: var(--space-xl);
  max-width: 760px;
}

.evidence-quote blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 600;
  color: var(--colour-text-primary);
  line-height: 1.45;
  max-width: none;
  margin: 0;
}

.evidence-quote blockquote strong { font-weight: 600; color: var(--colour-text-primary); }

.evidence-lead p {
  font-size: 17px;
  color: var(--colour-text-tertiary);
  margin-bottom: 1rem;
  max-width: 72ch;
}

.evidence-lead p strong { color: var(--colour-text-secondary); font-weight: 400; }

.evidence-elements-title {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-accent);
  font-weight: 500;
  margin: var(--space-lg) 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.evidence-elements-title::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

/* ─── DATA TABLE ─────────────────────────────────────────── */
.evidence-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  margin-bottom: var(--space-md);
}

.evidence-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.evidence-table thead tr {
  border-bottom: 1px solid var(--colour-border);
}

.evidence-table th {
  padding: 12px 20px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-tertiary);
  font-weight: 600;
  background: var(--colour-bg-card);
}

.evidence-table td {
  padding: 16px 20px;
  color: var(--colour-text-secondary);
  vertical-align: top;
  border-bottom: 1px solid var(--colour-border);
  line-height: 1.6;
}

.evidence-table tbody tr:last-child td { border-bottom: none; }
.evidence-table td:first-child { color: var(--colour-text-primary); font-weight: 400; white-space: nowrap; }
.evidence-table tbody tr:hover { background: var(--colour-bg-card-hover); }

.evidence-summary {
  font-size: 15px;
  color: var(--colour-text-secondary);
  max-width: 72ch;
  margin-bottom: var(--space-lg);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  line-height: 1.75;
}

.evidence-summary strong { color: var(--colour-text-primary); font-weight: 400; }

/* ─── COMPARISON CARD ────────────────────────────────────── */
.evidence-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: var(--space-lg);
}

.evidence-compare-col {
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
}

.evidence-compare-col:last-child {
  border-left: 3px solid var(--colour-accent);
  background: var(--colour-bg-card-hover);
}

.evidence-compare-col h3 {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.evidence-compare-col:first-child h3 { color: var(--colour-text-muted); }
.evidence-compare-col:last-child h3 { color: var(--colour-accent); }

.evidence-compare-col p {
  font-size: 15px;
  max-width: none;
  line-height: 1.7;
}

.evidence-compare-col:first-child p { color: var(--colour-text-tertiary); font-style: italic; }
.evidence-compare-col:last-child p { color: var(--colour-text-secondary); }
.evidence-compare-col p strong { color: var(--colour-text-secondary); font-weight: 400; }

/* ─── DIALOGUE / Q&A BLOCK ───────────────────────────────── */
.evidence-dialogue {
  padding: 28px;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  margin-bottom: var(--space-md);
}

.evidence-dialogue p {
  font-size: 15px;
  max-width: none;
  margin-bottom: var(--space-md);
  line-height: 1.65;
  padding-left: 16px;
}

.evidence-dialogue p:last-child { margin-bottom: 0; }

.evidence-dialogue .dialogue-role {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
  padding-left: 0;
}

/* Examiner style: muted label + tertiary italic text + border-left dim */
.evidence-dialogue p:nth-child(odd) {
  border-left: 2px solid var(--colour-border);
  color: var(--colour-text-tertiary);
  font-style: italic;
}

.evidence-dialogue p:nth-child(odd) .dialogue-role {
  color: var(--colour-text-muted);
  font-style: normal;
}

/* You / Response style: accent label + secondary text + accent border */
.evidence-dialogue p:nth-child(even) {
  border-left: 2px solid var(--colour-accent);
  color: var(--colour-text-secondary);
  font-style: normal;
}

.evidence-dialogue p:nth-child(even) .dialogue-role {
  color: var(--colour-accent);
}

.evidence-dialogue p strong { color: var(--colour-text-secondary); font-weight: 400; }

.evidence-products p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  max-width: 72ch;
  margin-bottom: 0.75rem;
  line-height: 1.75;
}

.evidence-products p strong { color: var(--colour-text-secondary); font-weight: 400; }

/* ─── DISCLAIMER / FOOTNOTE ──────────────────────────────── */
.evidence-disclaimer {
  margin-top: var(--space-md);
  padding-top: 1.5rem;
  border-top: 1px solid var(--colour-border);
}

.evidence-disclaimer p {
  font-size: 13px;
  color: var(--colour-text-muted);
  max-width: 72ch;
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* ─── FORMAL INVARIANT (CODE BLOCK) ─────────────────────── */
.evidence-mono {
  margin-top: 1.5rem;
  padding: 24px 28px;
  background: var(--colour-bg-code);
  border: 1px solid var(--colour-border-accent);
  border-left: 3px solid var(--colour-accent);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--colour-text-code);
  line-height: 1.7;
  overflow-x: auto;
  max-width: 640px;
}

.evidence-mono-note {
  font-size: 13px;
  color: var(--colour-text-muted);
  margin-top: 0.75rem;
  max-width: 72ch;
}

/* ─── PRODUCTS ───────────────────────────────────────────── */
#products { padding: var(--space-xl) 0; background: var(--colour-bg-primary); }

.products-header {
  width: 100%;
  max-width: none;
  align-items: start;
  margin-bottom: 3.5rem;
}

.products-header .label {
  margin-bottom: 1.25rem;
  justify-content: center;
  display: inline-flex;
}

.products-header h2 { margin: 0 auto 1.25rem; max-width: none; }

.products-header p {
  /* margin: 0 auto; */
  color: var(--colour-text-tertiary);
  /* text-align: center; */
  font-size: 17px;
  line-height: 1.75;
  /* max-width: min(72ch, 100%); */
  max-width: none;
}

.products-header p strong { color: var(--colour-text-secondary); font-weight: 400; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--colour-border);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
}

.product-panel {
  padding: 2.25rem 2rem;
  background: var(--colour-bg-card);
  position: relative;
  transition: background 0.2s;
  display: flex;
  flex-direction: column;
}

.product-panel:hover { background: var(--colour-bg-card-hover); }

.product-maturity {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-bottom: 1rem;
}

.product-proof-note {
  font-size: 14px;
  color: var(--colour-text-tertiary);
  margin: -1rem 0 1.5rem;
  line-height: 1.6;
  max-width: none;
}

.product-proof-note strong { color: var(--colour-text-secondary); font-weight: 400; }

.product-honesty {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 500;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.product-ctas {
  margin-top: auto;
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.product-ctas .btn-secondary { width: 100%; justify-content: center; text-align: center; }

/* ─── STATUS BADGE ───────────────────────────────────────── */
.product-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: var(--space-md);
}

/* Methodology variant */
.product-tag:not([class*="poc"]):not([class*="ref"]) {
  background: rgba(255, 255, 255, 0.08);
  color: var(--colour-text-tertiary);
}

.product-panel h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 700;
  color: var(--colour-text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.15;
}

.product-panel h3 span { color: var(--colour-accent-light); }

.product-tagline {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--colour-text-tertiary);
  letter-spacing: 0.02em;
  margin-bottom: 1.75rem;
  font-style: italic;
}

.product-panel > p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

/* ─── CODE BLOCK (product proof) ─────────────────────────── */
.product-proof {
  background: var(--colour-bg-code);
  border: 1px solid var(--colour-border-accent);
  border-left: 3px solid var(--colour-accent);
  border-radius: 6px;
  padding: 24px 28px;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--colour-text-code);
  line-height: 1.7;
}

.product-proof .comment { color: var(--colour-text-muted); }
.product-proof .keyword { color: var(--colour-accent-light); }
.product-proof .value { color: var(--colour-text-code); }
.product-proof .type { color: var(--colour-text-tertiary); }

.product-claims {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: var(--space-lg);
}

.product-claims li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 14px;
  color: var(--colour-text-tertiary);
  line-height: 1.6;
}

.product-claims li::before {
  content: '→';
  color: var(--colour-accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
  margin-top: 0.1em;
}

/* ─── STATS / METRIC ROW ─────────────────────────────────── */
.product-metric {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--colour-border);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.metric-cell {
  background: var(--colour-bg-primary);
  padding: 1.1rem 1.25rem;
}

.metric-cell .metric-value {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--colour-accent-light);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.metric-cell .metric-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--colour-text-tertiary);
}

/* ─── FORMAL METHODS ──────────────────────────────────────── */
#formal-methods.methods-note {
  margin-top: var(--space-lg);
  padding: 2.5rem 2.75rem;
  border-radius: 8px;
  border: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
}

.methods-note .label { margin-bottom: 1rem; }

.methods-note h3 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 1rem;
  max-width: none;
}

.methods-note p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  max-width: 72ch;
  margin-bottom: 0.85rem;
  line-height: 1.75;
}

.methods-note p strong { color: var(--colour-text-secondary); font-weight: 400; }

.methods-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  margin: 1.5rem 0 1.75rem;
}

.methods-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.methods-table th {
  padding: 12px 20px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-tertiary);
  font-weight: 600;
  background: var(--colour-bg-secondary);
  border-bottom: 1px solid var(--colour-border);
  vertical-align: top;
}

.methods-table td {
  padding: 16px 20px;
  color: var(--colour-text-tertiary);
  vertical-align: top;
  border-bottom: 1px solid var(--colour-border);
  line-height: 1.6;
}

.methods-table tbody tr:last-child td { border-bottom: none; }
.methods-table td:first-child { color: var(--colour-text-primary); font-weight: 400; white-space: nowrap; }
.methods-table td strong { color: var(--colour-text-secondary); font-weight: 400; }
.methods-table tbody tr:hover { background: var(--colour-bg-card-hover); }

.methods-layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--colour-border);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
  margin: 1.25rem 0 1.5rem;
}

.methods-layer-cell {
  background: var(--colour-bg-secondary);
  padding: 1rem 1.15rem;
}

.methods-layer-cell .layer-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-accent);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.methods-layer-cell p {
  font-size: 13px;
  margin: 0;
  max-width: none;
  color: var(--colour-text-tertiary);
}

.methods-ctas {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.methods-ctas a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--colour-accent);
}

.methods-ctas a:hover { color: var(--colour-accent-light); }

/* ─── RESEARCH STRIP ───────────────────────────────────────── */
#research { padding: var(--space-xl) 0; background: var(--colour-bg-secondary); }

.research-header { 
  /* margin-bottom: var(--space-md);  */
  margin-bottom: 3.5rem;
}
.research-header h2 { font-size: clamp(1.5rem, 2.5vw, 2.1rem); }
.research-header p { color: var(--colour-text-tertiary); font-size: 15px; }
.research-header p strong { color: var(--colour-text-secondary); font-weight: 400; }

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.research-card {
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  transition: border-color 0.2s;
}

.research-card:hover { border-color: var(--colour-border-accent); }

.research-badge {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.research-card h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.research-card p {
  font-size: 14px;
  color: var(--colour-text-tertiary);
  max-width: none;
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.research-card .research-plain {
  font-size: 13px;
  color: var(--colour-text-muted);
  font-style: italic;
  margin-bottom: 0;
}

.research-card a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  display: inline-block;
  margin-top: 0.65rem;
  color: var(--colour-accent);
}

.research-card a:hover { color: var(--colour-accent-light); }

.research-ctas {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.research-ctas a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--colour-accent);
}

.research-ctas a:hover { color: var(--colour-accent-light); }

/* ─── THE ARGUMENT ───────────────────────────────────────── */
#argument {
  padding: var(--space-xl) 0;
  background: var(--colour-bg-secondary);
  position: relative;
  overflow: hidden;
}

.argument-bg {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 40px,
    rgba(41, 98, 255, 0.012) 40px,
    rgba(41, 98, 255, 0.012) 41px
  );
}

.argument-inner { position: relative; z-index: 1; }

.argument-header { margin-bottom: var(--space-xl); }
.argument-header h2 em { color: var(--colour-accent-italic); font-style: italic; }

.argument-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--colour-border);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.argument-cell {
  background: var(--colour-bg-card);
  padding: 2.5rem 2rem;
  transition: background 0.2s;
}

.argument-cell:hover { background: var(--colour-bg-card-hover); }

.argument-cell .num {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--colour-accent);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--colour-border);
}

.argument-cell h3 {
  font-size: 1.1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
  margin-top: var(--space-xs);
}

.argument-cell p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  line-height: 1.75;
  max-width: none;
}

.argument-cell p strong { color: var(--colour-text-secondary); font-weight: 400; }

/* ─── PULL QUOTE ─────────────────────────────────────────── */
.argument-callout {
  padding-left: 28px;
  border-left: 3px solid var(--colour-accent);
  margin-bottom: var(--space-xl);
  max-width: 760px;
}

.argument-callout blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 600;
  color: var(--colour-text-primary);
  line-height: 1.45;
  max-width: none;
  margin-bottom: 1rem;
}

.argument-callout blockquote em { color: var(--colour-accent-italic); }

.argument-callout cite {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-style: normal;
}

/* ─── PROOF OF WORK ──────────────────────────────────────── */
#proof { padding: var(--space-xl) 0; background: var(--colour-bg-primary); }

.proof-header { margin-bottom: var(--space-xl); }
.proof-header h2 em { font-style: italic; color: var(--colour-accent-italic); }
.proof-header p { color: var(--colour-text-tertiary); font-size: 17px; }

.proof-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  margin-bottom: var(--space-xl);
}

.proof-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.proof-table thead tr {
  border-bottom: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
}

.proof-table thead th {
  padding: 12px 20px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-tertiary);
  font-weight: 600;
}

.proof-table tbody tr {
  border-bottom: 1px solid var(--colour-border);
  transition: background 0.2s;
}

.proof-table tbody tr:last-child { border-bottom: none; }
.proof-table tbody tr:hover { background: var(--colour-bg-card-hover); }

.proof-table td {
  padding: 16px 20px;
  color: var(--colour-text-secondary);
  vertical-align: top;
  line-height: 1.6;
}

.proof-table td:first-child { color: var(--colour-text-primary); font-weight: 400; }
.proof-table td .mono { font-family: var(--font-mono); font-size: 12px; color: var(--colour-text-code); }

/* ─── STATUS BADGES (PROOF TABLE) ────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 600;
}

/* PoC/Pilot → vivid blue */
.badge-green {
  background: var(--colour-status-poc);
  color: var(--colour-text-primary);
}

/* Reference Implementation → deep navy + light accent text */
.badge-amber {
  background: var(--colour-status-ref);
  color: var(--colour-accent-light);
}

.proof-domains {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--colour-border);
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
}

.domain-cell {
  background: var(--colour-bg-card);
  padding: 2rem 1.75rem;
  transition: background 0.2s;
}

.domain-cell:hover { background: var(--colour-bg-card-hover); }

.domain-cell .domain-sector {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.domain-cell .domain-sector::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

.domain-cell h3 {
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.5rem;
}

.domain-cell p {
  font-size: 13px;
  color: var(--colour-text-tertiary);
  max-width: none;
  line-height: 1.6;
}

/* ─── PROOF CASE NARRATIVES ────────────────────────────────── */
.proof-cases {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.proof-case {
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  padding: 1.75rem 1.85rem;
  transition: border-color 0.2s;
}

.proof-case:hover { border-color: var(--colour-border-accent); }

.proof-case h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.35rem;
}

.proof-case .proof-case-domain {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 500;
  margin-bottom: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.proof-case .proof-case-domain .badge { font-size: 9px; padding: 3px 8px; }

.proof-case-section-label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-top: 0.9rem;
  margin-bottom: 0.25rem;
}

.proof-case p {
  font-size: 14px;
  color: var(--colour-text-tertiary);
  max-width: none;
  line-height: 1.7;
}

/* ─── CONTRARIAN ─────────────────────────────────────────── */
#contrarian {
  padding: var(--space-xl) 0;
  background: var(--colour-bg-primary);
}

.contrarian-header { margin-bottom: var(--space-xl); }

.statements-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  overflow: hidden;
}

.statement-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--colour-border);
  transition: background 0.2s;
}

.statement-row:last-child { border-bottom: none; }
.statement-row:hover { background: rgba(41, 98, 255, 0.02); }

.statement-col {
  padding: 2rem 2.5rem;
}

.statement-col:first-child {
  border-right: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
}

.statement-col:last-child {
  background: var(--colour-bg-card-hover);
  border-left: 3px solid var(--colour-accent);
}

.statement-col .col-label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.col-label-consensus { color: var(--colour-text-muted); }
.col-label-rb { color: var(--colour-accent); }

.statement-col p {
  font-size: 15px;
  line-height: 1.75;
  max-width: none;
}

.statement-col:first-child p { color: var(--colour-text-tertiary); font-style: italic; }
.statement-col:last-child p { color: var(--colour-text-secondary); }
.statement-col:last-child p strong { color: var(--colour-text-primary); font-weight: 400; }

/* ─── ENGINEER ROLE SECTION ───────────────────────────────── */
.engineer-role {
  margin-top: 3.5rem;
  padding: 2.5rem 2.75rem;
  border-radius: 8px;
  border: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
}

.engineer-role h3 {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.75rem;
}

.engineer-role p {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  /* max-width: 72ch; */
  margin-bottom: 0.75rem;
  line-height: 1.75;
}

.engineer-role p strong { color: var(--colour-text-secondary); font-weight: 400; }

.engineer-role ul {
  margin: 0.75rem 0 1rem;
  padding-left: 1.2rem;
  color: var(--colour-text-tertiary);
  font-size: 15px;
}

.engineer-role li { margin-bottom: 0.35rem; max-width: 72ch; }

.engineer-steward-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  margin: 1.25rem 0 1.5rem;
}

.engineer-steward-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.engineer-steward-table th {
  padding: 12px 20px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-tertiary);
  font-weight: 600;
  background: var(--colour-bg-primary);
  border-bottom: 1px solid var(--colour-border);
}

.engineer-steward-table td {
  padding: 12px 20px;
  color: var(--colour-text-tertiary);
  vertical-align: top;
  border-bottom: 1px solid var(--colour-border);
  line-height: 1.6;
}

.engineer-steward-table tbody tr:last-child td { border-bottom: none; }
.engineer-steward-table td:first-child { color: var(--colour-text-primary); }
.engineer-steward-table tbody tr:hover { background: var(--colour-bg-card-hover); }

.engineer-pullquote {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  font-style: italic;
  margin: 1.25rem 0;
  /* max-width: 52ch; */
  line-height: 1.45;
  padding-left: 28px;
  border-left: 3px solid var(--colour-accent);
}

.engineer-ctas {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.engineer-ctas a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--colour-accent);
}

.engineer-ctas a:hover { color: var(--colour-accent-light); text-decoration: underline; }

.hero-formal-note {
  margin-top: 1rem;
  font-size: 13px;
  color: var(--colour-text-muted);
  width: 100%;
}

.hero-formal-note a {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--colour-accent);
}

/* ─── TEAM ───────────────────────────────────────────────── */
#team { padding: var(--space-xl) 0; background: var(--colour-bg-primary); }

.team-header { margin-bottom: var(--space-xl); }

/* ─── TEAM ALTERNATING ROWS ──────────────────────────────── */
.team-rows {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.team-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--colour-border);
}

.team-row:last-child { border-bottom: 1px solid var(--colour-border); }

.team-row.reverse .team-identity { order: 2; }
.team-row.reverse .team-bio { order: 1; }

.team-identity {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--colour-bg-card);
  border: 2px solid var(--colour-accent);
  flex-shrink: 0;
  overflow: hidden;
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.team-name {
  font-family: var(--font-sans);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  line-height: 1.2;
}

.team-role {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--colour-text-tertiary);
  line-height: 1.4;
}

.team-handle {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--colour-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.team-handle:hover { color: var(--colour-accent-light); }

.team-bio p {
  font-size: 17px;
  color: var(--colour-text-secondary);
  max-width: 60ch;
  line-height: 1.75;
  margin-bottom: 1rem;
}

.team-bio p:last-of-type { margin-bottom: var(--space-sm); }

/* ─── SKILL TAGS ─────────────────────────────────────────── */
.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.team-tag {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--colour-text-tertiary);
  border: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
  padding: 4px 12px;
  border-radius: 20px;
}

/* Legacy team grid — hidden when rows present */
.team-grid { display: none; }

.team-note {
  padding: 2rem 2.5rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.team-note p { font-size: 15px; color: var(--colour-text-tertiary); max-width: none; }
.team-note p strong { color: var(--colour-text-secondary); font-weight: 400; }

.team-note-icon {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--colour-accent);
  flex-shrink: 0;
}

/* ─── CONTACT ────────────────────────────────────────────── */
#contact {
  padding: var(--space-xl) 0;
  background: var(--colour-bg-secondary);
  position: relative;
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  bottom: -20%; right: -10%;
  width: 60vw; height: 60vw;
  max-width: 800px; max-height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(41, 98, 255, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.contact-left .label { margin-bottom: 1.5rem; }
.contact-left h2 { margin-bottom: 1.5rem; max-width: none; }
.contact-left p { color: var(--colour-text-tertiary); margin-bottom: var(--space-md); max-width: none; }
.contact-left p strong { color: var(--colour-text-secondary); font-weight: 400; }

.contact-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-option {
  padding: 1.5rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  transition: border-color 0.2s, background 0.2s;
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.contact-option:hover {
  border-color: var(--colour-border-accent);
  background: var(--colour-bg-card-hover);
  color: inherit;
}

.contact-option-title {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--colour-accent);
  margin-bottom: 0.4rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-option-title::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

.contact-option p {
  font-size: 14px;
  color: var(--colour-text-tertiary);
  max-width: none;
  margin: 0;
  line-height: 1.6;
}

/* ─── CONTACT FORM ───────────────────────────────────────── */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }

.form-group label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--colour-text-tertiary);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--colour-bg-card);
  border: 1px solid var(--colour-border);
  border-radius: 6px;
  padding: 12px 16px;
  color: var(--colour-text-secondary);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235B8AFF' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group select option { background: var(--colour-bg-card); color: var(--colour-text-secondary); }

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--colour-accent);
  box-shadow: 0 0 0 3px rgba(41, 98, 255, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--colour-text-muted); }
.form-group textarea { resize: vertical; min-height: 130px; }

.form-submit { align-self: flex-start; }

/* ─── FOOTER ─────────────────────────────────────────────── */
footer {
  padding: var(--space-xl) 0 var(--space-md);
  border-top: 1px solid var(--colour-border);
  background: var(--colour-bg-primary);
}

.footer-row-1 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--colour-border);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-brand-name {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  letter-spacing: 0.02em;
}

.footer-brand-name span { color: var(--colour-accent); }

.footer-col-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  margin-bottom: var(--space-sm);
}

.footer-connect,
.footer-resources {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-connect a,
.footer-resources a {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--colour-text-tertiary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-connect a:hover,
.footer-resources a:hover {
  color: var(--colour-text-primary);
}

.footer-row-2 {
  display: flex;
  align-items: center;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--colour-text-muted);
  letter-spacing: 0.02em;
}

/* Legacy footer inner — hide if present */
.footer-inner { display: none; }
.footer-logo { display: none; }
.footer-links { display: none; }

/* ─── ANIMATIONS ─────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%       { opacity: 0.8; transform: scaleY(1.15); }
}

/* ─── REVEAL ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .thesis-grid,
  .products-grid,
  .research-grid,
  .methods-layer-grid,
  .contact-inner,
  .team-row { grid-template-columns: 1fr; }

  .team-row.reverse .team-identity { order: 0; }
  .team-row.reverse .team-bio { order: 0; }

  .proof-cases { grid-template-columns: 1fr; }
  .argument-grid { grid-template-columns: 1fr; }
  .proof-domains { grid-template-columns: 1fr 1fr; }

  .statement-row { grid-template-columns: 1fr; }
  .statement-col:first-child { border-right: none; border-bottom: 1px solid var(--colour-border); }
  .statement-col:last-child { border-left: none; border-top: 3px solid var(--colour-accent); }

  .contact-inner { gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }

  .nav-burger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 15, 28, 0.97);
    border-top: 1px solid var(--colour-border);
    border-bottom: 1px solid var(--colour-border);
    backdrop-filter: blur(12px);
    padding: 0.5rem 0;
  }

  nav.open .nav-links { display: flex; }

  .nav-links a {
    padding: 0.9rem 2rem;
    border-bottom: 1px solid var(--colour-border);
    font-size: 14px;
    border-bottom: none;
  }

  .nav-links a.nav-active {
    border-bottom: none;
    padding-bottom: 0.9rem;
  }

  .nav-links a:not(:last-child) { border-bottom: 1px solid var(--colour-border); }

  .nav-cta {
    border-radius: 0;
    padding: 0.9rem 2rem;
    text-align: left;
    width: 100%;
  }

  .capabilities-header,
  .research-header,
  .proof-header,
  .explore-header,
  .thesis-problem,
  .evidence-header,
  .argument-header,
  .contrarian-header,
  .team-header {
    display: block;
  }

  .capabilities-header .label,
  .research-header .label,
  .proof-header .label,
  .explore-header .label,
  .thesis-problem .label,
  .evidence-header .label,
  .argument-header .label,
  .contrarian-header .label,
  .team-header .label {
    margin-bottom: 1.25rem;
  }

  .capabilities-header h2,
  .research-header h2,
  .proof-header h2,
  .explore-header h2,
  .thesis-problem h2,
  .evidence-header h2,
  .argument-header h2,
  .contrarian-header h2,
  .team-header h2 {
    margin-bottom: 1rem;
    max-width: none;
  }

  .capabilities-header p,
  .research-header p,
  .proof-header p,
  .explore-header p,
  .thesis-problem p {
    margin-top: 0;
    margin-bottom: 1rem;
  }

  .footer-row-1 {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 600px) {
  section { padding: 4rem 0; }
  .container { padding: 0 1.25rem; }
  .proof-domains { grid-template-columns: 1fr; }
  .product-metric { grid-template-columns: 1fr 1fr; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas a { text-align: center; justify-content: center; }

  .capabilities-grid,
  .evidence-compare,
  .persona-selector { grid-template-columns: 1fr; }

  .proof-cases,
  .explore-grid { grid-template-columns: 1fr; }
}

/* ─── EXPLORE HUB (home) ───────────────────────────────────── */
.explore-hub { padding: var(--space-xl) 0; background: var(--colour-bg-secondary); }
.explore-header { margin-bottom: var(--space-md); }
.explore-header p { color: var(--colour-text-tertiary); font-size: 17px; }

.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.explore-card {
  display: block;
  padding: 1.5rem 1.6rem;
  border: 1px solid var(--colour-border);
  border-radius: 8px;
  background: var(--colour-bg-card);
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
}

.explore-card:hover {
  border-color: var(--colour-border-accent);
  transform: translateY(-2px);
  color: inherit;
}

.explore-card-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-accent);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.explore-card-label::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--colour-accent);
  flex-shrink: 0;
}

.explore-card h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.5rem;
}

.explore-card p {
  font-size: 14px;
  color: var(--colour-text-tertiary);
  max-width: none;
  margin: 0;
  line-height: 1.6;
}

body:not(.page-home) #main-content > section:first-child {
  padding-top: 7rem;
}

/* ─── SUPPLEMENTARY PAGES (explainer, glossary) ─────────────── */
.page-prose {
  padding-bottom: 4rem;
}

.page-prose .container--narrow {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-prose h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2.1rem, 4vw, 2.7rem);
  color: var(--colour-text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.15;
}

.page-prose h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--colour-text-primary);
  margin: 2.5rem 0 0.75rem;
}

.page-prose h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.4rem;
}

.page-prose p {
  color: var(--colour-text-tertiary);
  margin-bottom: 1rem;
  max-width: 70ch;
  font-size: 17px;
  line-height: 1.75;
}

.page-prose p strong { color: var(--colour-text-secondary); font-weight: 400; }

.page-prose .label {
  margin-bottom: 1.1rem;
}

.page-prose .callout {
  margin-top: 1.75rem;
  padding: 1.5rem 1.75rem;
  border-radius: 8px;
  border: 1px solid var(--colour-border);
  background: var(--colour-bg-card);
}

.page-prose .callout-title {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.page-prose .callout p { margin-bottom: 0; }

.page-prose .two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.page-prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--colour-bg-code);
  border: 1px solid var(--colour-border-accent);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--colour-text-code);
}

.page-prose pre {
  background: var(--colour-bg-code);
  border: 1px solid var(--colour-border-accent);
  border-left: 3px solid var(--colour-accent);
  border-radius: 6px;
  padding: 24px 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--colour-text-code);
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
  max-width: none;
  line-height: 1.7;
}

.page-prose ul {
  margin: 0.5rem 0 1.25rem;
  padding-left: 1.2rem;
  color: var(--colour-text-tertiary);
  font-size: 15px;
  max-width: 70ch;
}

.page-prose li { margin-bottom: 0.4rem; }
.page-prose li strong { color: var(--colour-text-secondary); font-weight: 400; }

.page-prose .steps {
  margin-top: 1.5rem;
  border-left: 3px solid var(--colour-accent);
  padding-left: 1.25rem;
}

.page-prose .step-label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--colour-text-muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.page-prose .step-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--colour-text-primary);
  margin-bottom: 0.25rem;
}

.page-prose .plain-english {
  font-size: 15px;
  color: var(--colour-text-secondary);
  padding: 0.75rem 1rem;
  border-left: 2px solid var(--colour-accent-light);
  margin: 0.75rem 0 1.25rem;
  max-width: 70ch;
}

.page-prose .cta-row {
  margin-top: 1.25rem;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
}

.page-prose .cta-row a {
  margin-right: 1.5rem;
  color: var(--colour-accent);
}

.page-prose .cta-row a:hover { color: var(--colour-accent-light); }

.page-prose .footnote {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--colour-text-muted);
  margin-top: 2.5rem;
  max-width: 70ch;
}

.page-prose .terms {
  margin-top: var(--space-md);
  border-top: 1px solid var(--colour-border);
}

.page-prose .term {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--colour-border);
}

.page-prose .term-name {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--colour-text-primary);
  margin-bottom: 0.3rem;
}

.page-prose .term-short {
  font-size: 15px;
  color: var(--colour-text-secondary);
  margin-bottom: 0.4rem;
  max-width: 70ch;
}

.page-prose .term-long {
  font-size: 15px;
  color: var(--colour-text-tertiary);
  max-width: 70ch;
}

@media (max-width: 700px) {
  .page-prose .container--narrow { padding: 0 1.5rem; }
  .page-prose .two-column { grid-template-columns: 1fr; }
  .page-prose h1 { font-size: clamp(2rem, 3.5vw, 2.4rem); }
}