/* =========================================================
   Game Integrity Surveillance
   Dark, forensic, data-forward. Signal cyan on carbon.
   ========================================================= */

:root {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6.5rem);

  /* 4px spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1240px;

  /* Fonts */
  --font-body: 'Satoshi', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ---- Dark (default): midnight blue + neon lime signal ---- */
:root,
[data-theme='dark'] {
  --color-bg: #080d1a;
  --color-surface: #0f1526;
  --color-surface-2: #141c33;
  --color-surface-offset: #1a2340;
  --color-border: #253055;
  --color-border-strong: #384574;
  --color-divider: #182042;

  --color-text: #e8ecf5;
  --color-text-muted: #8892ad;
  --color-text-faint: #5a6485;
  --color-text-inverse: #080d1a;

  /* Primary: cobalt (network / authority) */
  --color-primary: #3d7bff;
  --color-primary-strong: #6a9aff;
  --color-primary-glow: rgba(61, 123, 255, 0.32);
  --color-primary-soft: rgba(61, 123, 255, 0.10);

  /* Signal: neon lime (flagged evidence / decisive action) */
  --color-signal: #c9ff3d;
  --color-signal-strong: #e0ff7a;
  --color-signal-glow: rgba(201, 255, 61, 0.40);
  --color-signal-soft: rgba(201, 255, 61, 0.10);

  --color-alert: #ff5577;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 22px 68px rgba(0, 0, 0, 0.65);

  --grid-line: rgba(180, 200, 255, 0.045);
  --hero-glow: radial-gradient(
    circle at 15% 15%,
    rgba(61, 123, 255, 0.28) 0%,
    rgba(61, 123, 255, 0) 45%
  ),
  radial-gradient(
    circle at 85% 30%,
    rgba(201, 255, 61, 0.10) 0%,
    rgba(201, 255, 61, 0) 40%
  );
}

/* ---- Light mode ---- */
[data-theme='light'] {
  --color-bg: #f4f6fc;
  --color-surface: #ffffff;
  --color-surface-2: #f9fbff;
  --color-surface-offset: #ecf0f9;
  --color-border: #d8deee;
  --color-border-strong: #b6c0d9;
  --color-divider: #e6ebf5;

  --color-text: #10162a;
  --color-text-muted: #4d5680;
  --color-text-faint: #8790aa;
  --color-text-inverse: #ffffff;

  --color-primary: #2554cc;
  --color-primary-strong: #17399b;
  --color-primary-glow: rgba(37, 84, 204, 0.20);
  --color-primary-soft: rgba(37, 84, 204, 0.08);

  --color-signal: #4d7d05;
  --color-signal-strong: #375d02;
  --color-signal-glow: rgba(77, 125, 5, 0.22);
  --color-signal-soft: rgba(77, 125, 5, 0.08);

  --color-alert: #c73a54;

  --shadow-sm: 0 1px 2px rgba(16, 22, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 22, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(16, 22, 42, 0.12);

  --grid-line: rgba(16, 22, 42, 0.05);
  --hero-glow: radial-gradient(
    circle at 15% 15%,
    rgba(37, 84, 204, 0.14) 0%,
    rgba(37, 84, 204, 0) 45%
  ),
  radial-gradient(
    circle at 85% 30%,
    rgba(77, 125, 5, 0.10) 0%,
    rgba(77, 125, 5, 0) 40%
  );
}

/* ============ Reset / Base ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image: var(--hero-glow);
  background-attachment: fixed;
  background-repeat: no-repeat;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
}
p {
  text-wrap: pretty;
  max-width: 68ch;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-interactive);
}
a:hover {
  color: var(--color-primary);
}
button {
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
  font: inherit;
}

::selection {
  background: var(--color-primary-glow);
  color: var(--color-text);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ Grid backdrop ============ */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 85%);
  pointer-events: none;
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-10));
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-divider);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}
.brand-mark {
  color: var(--color-primary);
  filter: drop-shadow(0 0 12px var(--color-primary-glow));
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.brand-name {
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 2px;
}

.site-nav {
  display: flex;
  gap: var(--space-6);
  margin-left: auto;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.site-nav a {
  position: relative;
  padding-block: var(--space-2);
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-interactive);
}
.site-nav a:hover::after {
  transform: scaleX(1);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

@media (max-width: 720px) {
  .site-nav {
    display: none;
  }
}

/* ============ Section shell ============ */
main {
  overflow: hidden;
}
.section {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  position: relative;
}
.section-panel {
  background:
    linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  max-width: 100%;
  padding-inline: 0;
}
.section-panel > * {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
}

.section-head {
  display: grid;
  gap: var(--space-4);
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
  max-width: 780px;
}
.section-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-transform: uppercase;
}
.section-head h2 {
  font-size: var(--text-2xl);
}
.section-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
}

/* ============ Hero ============ */
.hero {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-10));
  padding-block: clamp(var(--space-16), 12vw, var(--space-32));
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
.hero-content {
  min-width: 0;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 0%, var(--color-primary-glow) 0%, transparent 45%);
  pointer-events: none;
  z-index: -1;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
    max-width: 420px;
    margin-inline: auto;
  }
}

/* ============ Hero visual (network SVG) ============ */
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
}
.hero-visual .net {
  width: 100%;
  height: 100%;
  overflow: visible;
}
.node {
  fill: var(--color-surface-offset);
  stroke: var(--color-border-strong);
  stroke-width: 1.5;
  transition: fill 250ms ease;
}
.node-flag {
  fill: var(--color-primary);
  stroke: var(--color-primary);
  filter: drop-shadow(0 0 10px var(--color-primary-glow));
}
.node-farm {
  fill: var(--color-primary-strong);
  stroke: var(--color-primary-strong);
  filter: drop-shadow(0 0 10px var(--color-primary-glow));
}
.node-shared {
  fill: var(--color-signal-strong);
  stroke: var(--color-signal);
  stroke-width: 1.5;
  filter: drop-shadow(0 0 14px var(--color-signal-glow));
  transform-box: fill-box;
  transform-origin: center;
  animation: sharedPulse 2.6s ease-in-out infinite;
}
.hero-visual .nodes .node-shared:nth-of-type(1) { animation-delay: 0s; }
.hero-visual .nodes .node-shared:nth-of-type(2) { animation-delay: 0.5s; }
.hero-visual .nodes .node-shared:nth-of-type(3) { animation-delay: 1s; }
@keyframes sharedPulse {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 8px var(--color-signal-glow));
  }
  50% {
    transform: scale(1.28);
    filter: drop-shadow(0 0 22px var(--color-signal-glow));
  }
}
@media (prefers-reduced-motion: reduce) {
  .node-shared { animation: none; }
}
.node-signal {
  fill: var(--color-signal);
  stroke: var(--color-signal);
  filter: drop-shadow(0 0 10px var(--color-signal-glow));
}
.node-sink {
  fill: var(--color-signal-strong);
  stroke: var(--color-signal);
  filter: drop-shadow(0 0 14px var(--color-signal-glow));
}
.sink-ring {
  fill: none;
  stroke: var(--color-signal);
  stroke-opacity: 0.4;
  stroke-dasharray: 3 4;
  animation: spin 22s linear infinite;
  transform-origin: 260px 470px;
}
.node-core {
  fill: var(--color-bg);
  stroke: var(--color-primary);
  stroke-width: 2;
}
.node-core-ring {
  fill: none;
  stroke: var(--color-primary);
  stroke-opacity: 0.35;
  stroke-dasharray: 3 4;
  animation: spin 22s linear infinite;
  transform-origin: 260px 260px;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.sweep circle {
  animation: sweepRadar 3.6s ease-out infinite;
  transform-origin: 270px 220px;
}
.sweep circle:nth-child(2) { animation-delay: 1.2s; }
.sweep circle:nth-child(3) { animation-delay: 2.4s; }
@keyframes sweepRadar {
  0% {
    opacity: 0.55;
    transform: scale(0.55);
  }
  70% {
    opacity: 0.15;
  }
  100% {
    opacity: 0;
    transform: scale(1.15);
  }
}

.set-fills ellipse {
  animation: overlapBreath 3.4s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes overlapBreath {
  0%, 100% { opacity: 0.75; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

.overlap-badge rect {
  animation: badgeGlow 2.6s ease-in-out infinite;
}
@keyframes badgeGlow {
  0%, 100% { filter: drop-shadow(0 0 4px var(--color-signal-glow)); }
  50% { filter: drop-shadow(0 0 14px var(--color-signal-glow)); }
}

@media (prefers-reduced-motion: reduce) {
  .sweep circle,
  .set-fills ellipse,
  .overlap-badge rect { animation: none; }
}
@media (prefers-reduced-motion: reduce) {
  .node-core-ring, .sweep circle { animation: none; }
  .hero-visual [animateMotion] { display: none; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 0 var(--color-primary-glow);
  animation: pulse 2.2s ease-out infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 var(--color-primary-glow);
  }
  70% {
    box-shadow: 0 0 0 12px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.hero-title {
  margin-top: var(--space-8);
  font-size: clamp(2.5rem, 0.5rem + 5vw, 5.5rem);
  letter-spacing: -0.035em;
  line-height: 0.98;
  max-width: 12ch;
}
.hero-title em {
  font-style: italic;
  color: var(--color-primary);
  font-weight: 700;
}

.hero-lede {
  margin-top: var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 58ch;
}

.hero-meta {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}
@media (max-width: 640px) {
  .hero-meta { grid-template-columns: 1fr; gap: var(--space-3); }
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero-meta-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.hero-meta-value {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}

/* ============ Threats ============ */
.threat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.threat-card {
  position: relative;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  transition:
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.threat-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.threat-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}
.threat-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.threat-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}
.threat-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.threat-list {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
}
.threat-list li {
  position: relative;
  padding-left: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text);
}
.threat-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 12px;
  height: 1px;
  background: var(--color-primary);
}

/* ============ Findings ============ */
.findings-grid {
  display: grid;
  /* 3 x 2 on desktop; falls back to 2 columns on tablet, 1 column on mobile */
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
@media (max-width: 960px) {
  .findings-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .findings-grid { grid-template-columns: 1fr; }
}
.finding {
  padding: var(--space-8);
  border-right: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
  transition: background var(--transition-interactive);
}
.finding:hover {
  background: var(--color-surface-2);
}
/* Remove trailing borders on last row / last col so the outer border is the only edge. */
.finding:nth-child(3n) { border-right: none; }
.findings-grid .finding:nth-last-child(-n+3):nth-child(3n+1),
.findings-grid .finding:nth-last-child(-n+3):nth-child(3n+1) ~ .finding {
  border-bottom: none;
}
@media (max-width: 960px) {
  .finding:nth-child(3n) { border-right: 1px solid var(--color-divider); }
  .finding:nth-child(2n) { border-right: none; }
  .findings-grid .finding:nth-last-child(-n+2):nth-child(2n+1),
  .findings-grid .finding:nth-last-child(-n+2):nth-child(2n+1) ~ .finding {
    border-bottom: none;
  }
}
@media (max-width: 560px) {
  .finding { border-right: none; }
  .finding:last-child { border-bottom: none; }
}
.finding-value {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.finding-lede {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 1rem + 3.5vw, 3.5rem);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}
.finding-unit {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  white-space: normal;
}
.finding-caption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-6);
  align-items: start;
  margin-top: var(--space-10);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.callout-mark {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  line-height: 1;
}
.callout-title {
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.callout-text {
  color: var(--color-text-muted);
}

/* ============ Method ============ */
.method-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  counter-reset: none;
}
@media (max-width: 1080px) {
  .method-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 720px) {
  .method-steps {
    grid-template-columns: 1fr;
  }
}
.method-step {
  height: 100%;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
}
.method-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.2em;
}
.method-step h3 {
  font-size: var(--text-lg);
}
.method-step p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============ Principles ============ */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}
.principle {
  padding: var(--space-6) var(--space-6) var(--space-6) var(--space-10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  position: relative;
}
.principle-x {
  position: absolute;
  top: var(--space-6);
  left: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-alert);
  font-weight: 700;
}
.principle-check {
  position: absolute;
  top: var(--space-6);
  left: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-primary);
  font-weight: 700;
}
.principle h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}
.principle p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============ Outro ============ */
.section-outro {
  text-align: center;
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}
.outro-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.outro-title {
  font-size: var(--text-2xl);
  max-width: 22ch;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}
.outro-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-inline: auto;
}

/* ============ Case studies ============ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}
.case-card {
  position: relative;
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition:
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
  overflow: hidden;
}
.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.case-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.case-card:hover::before {
  opacity: 1;
}
.case-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  flex-wrap: wrap;
}
.case-tag {
  color: var(--color-primary);
}
.case-id {
  color: var(--color-text-faint);
}
.case-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
}
.case-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.case-meta-item {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: baseline;
}
.case-meta-value {
  white-space: normal;
  overflow-wrap: anywhere;
}
.case-meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.case-meta-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
}
.case-meta-signal {
  color: var(--color-signal);
}
.case-meta-dim {
  display: block;
  color: var(--color-text-faint);
  font-size: 11px;
  letter-spacing: 0.04em;
  margin-top: 2px;
}

/* Inline case glyph */
.case-glyph {
  margin: calc(var(--space-2) * -1) calc(var(--space-8) * -1) var(--space-5);
  padding: var(--space-4) var(--space-8);
  border-bottom: 1px solid var(--color-divider);
  background:
    linear-gradient(180deg,
      color-mix(in oklab, var(--color-primary-soft) 60%, transparent) 0%,
      transparent 100%);
}
.case-glyph svg {
  width: 100%;
  height: 76px;
  overflow: visible;
}
.case-body {
  display: grid;
  gap: var(--space-4);
}
.case-row dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}
.case-row dd {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============ Operator timeline ============ */
.timeline {
  list-style: none;
  display: grid;
  gap: var(--space-2);
  position: relative;
  padding-left: 0;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 82px;
  width: 1px;
  background: linear-gradient(180deg,
    var(--color-primary) 0%,
    var(--color-signal) 55%,
    var(--color-signal-strong) 100%);
  opacity: 0.5;
}
.timeline-item {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: var(--space-6);
  padding: var(--space-6) 0;
  position: relative;
  align-items: start;
}
.timeline-item + .timeline-item {
  border-top: 1px dashed var(--color-divider);
}
.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding-top: 4px;
  position: relative;
}
.timeline-day {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.timeline-dot {
  position: absolute;
  top: 8px;
  left: 76px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg);
  z-index: 1;
}
.timeline-dot-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px var(--color-primary-glow);
}
.timeline-dot-signal {
  background: var(--color-signal);
  border-color: var(--color-signal);
  box-shadow: 0 0 14px var(--color-signal-glow);
}
.timeline-dot-strong {
  background: var(--color-signal-strong);
  border-color: var(--color-signal);
  box-shadow: 0 0 24px var(--color-signal-glow);
  width: 16px;
  height: 16px;
  top: 6px;
}
.timeline-dot-pulse {
  animation: dotPulse 2.4s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 8px var(--color-signal-glow); transform: scale(1); }
  50% { box-shadow: 0 0 20px var(--color-signal-glow); transform: scale(1.25); }
}
@media (prefers-reduced-motion: reduce) {
  .timeline-dot-pulse { animation: none; }
}

.timeline-body {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}
.timeline-tag {
  display: inline-block;
  align-self: start;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 2px var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
}
.timeline-tag-signal {
  color: var(--color-signal);
  background: var(--color-signal-soft);
  border-color: color-mix(in oklab, var(--color-signal) 40%, var(--color-border));
}
.timeline-body h3 {
  font-size: var(--text-lg);
  letter-spacing: -0.01em;
}
.timeline-body p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}
.timeline-state {
  margin-top: var(--space-2);
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border-left: 2px solid var(--color-primary);
  background: var(--color-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  align-self: start;
}
.timeline-state-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.timeline-state-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-text);
}
.timeline-state-signal {
  color: var(--color-signal);
}
.timeline-item-signal .timeline-state {
  border-left-color: var(--color-signal);
}
.timeline-item-final .timeline-body h3 {
  color: var(--color-signal-strong);
}
.timeline-item-final .timeline-state {
  border-left-color: var(--color-signal-strong);
  background: var(--color-signal-soft);
}

@media (max-width: 720px) {
  .timeline::before { left: 8px; }
  .timeline-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding-left: var(--space-8);
  }
  .timeline-marker { padding-top: 0; }
  .timeline-dot { left: -22px; top: 4px; }
  .timeline-day { font-size: 11px; }
}

/* ============ Venn scroll animation ============
   Choreography (triggered by .is-playing on [data-venn]):
     0.0s  ring outline draws
     0.5s  farm outline draws
     1.0s  dump outline draws
     1.4s  fills fade in + set labels slide in
     1.7s  ring-only dots pop (staggered)
     2.0s  farm-only dots pop
     2.3s  dump-only dots pop
     2.7s  intersection labels fade in (RF, FD, RD, ALL)
     3.2s  shared dots burst in (lime payoff)
     3.8s  centre ALL-THREE dot starts its infinite pulse
   ============================================= */
[data-venn] .venn-fill,
[data-venn] .venn-set-label,
[data-venn] .venn-inter,
[data-venn] .venn-dot {
  opacity: 0;
}
[data-venn] .venn-outline {
  stroke-dasharray: 820;
  stroke-dashoffset: 820;
}
[data-venn] .venn-set-label,
[data-venn] .venn-inter {
  transform: translateY(6px);
  transform-box: fill-box;
  transform-origin: center;
  transition: none;
}
[data-venn] .venn-dot {
  transform-box: fill-box;
  transform-origin: center;
  transform: scale(0.2);
}

[data-venn].is-playing .venn-outline-ring {
  animation: vennDraw 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0s forwards;
}
[data-venn].is-playing .venn-outline-farm {
  animation: vennDraw 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}
[data-venn].is-playing .venn-outline-dump {
  animation: vennDraw 0.9s cubic-bezier(0.16, 1, 0.3, 1) 1.0s forwards;
}
@keyframes vennDraw {
  from { stroke-dashoffset: 820; }
  to   { stroke-dashoffset: 0; }
}

[data-venn].is-playing .venn-fill-ring { animation: vennFade 0.7s ease-out 1.4s forwards; }
[data-venn].is-playing .venn-fill-farm { animation: vennFade 0.7s ease-out 1.5s forwards; }
[data-venn].is-playing .venn-fill-dump { animation: vennFade 0.7s ease-out 1.6s forwards; }
@keyframes vennFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

[data-venn].is-playing .venn-label-ring { animation: vennLabelIn 0.6s ease-out 0.9s forwards; }
[data-venn].is-playing .venn-label-farm { animation: vennLabelIn 0.6s ease-out 1.4s forwards; }
[data-venn].is-playing .venn-label-dump { animation: vennLabelIn 0.6s ease-out 1.9s forwards; }
@keyframes vennLabelIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Non-overlap member dots pop in per set */
[data-venn].is-playing .venn-dot-ring { animation: vennDotPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
[data-venn].is-playing .venn-dot-farm { animation: vennDotPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
[data-venn].is-playing .venn-dot-dump { animation: vennDotPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }

/* Stagger within each set. Dots share a parent <g> where every child is a <circle>,
   so nth-of-type == nth-child; we use the absolute child index positions. */
/* Ring dots occupy positions 1..4 */
[data-venn].is-playing .overlap-nodes > circle:nth-child(1) { animation-delay: 1.70s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(2) { animation-delay: 1.80s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(3) { animation-delay: 1.90s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(4) { animation-delay: 2.00s; }
/* Farm dots occupy positions 5..10 */
[data-venn].is-playing .overlap-nodes > circle:nth-child(5) { animation-delay: 2.00s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(6) { animation-delay: 2.10s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(7) { animation-delay: 2.20s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(8) { animation-delay: 2.30s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(9) { animation-delay: 2.40s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(10) { animation-delay: 2.50s; }
/* Dump-only dots occupy positions 11..15 */
[data-venn].is-playing .overlap-nodes > circle:nth-child(11) { animation-delay: 2.30s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(12) { animation-delay: 2.40s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(13) { animation-delay: 2.50s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(14) { animation-delay: 2.60s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(15) { animation-delay: 2.70s; }
/* Shared dots occupy positions 16..21 */
[data-venn].is-playing .overlap-nodes > circle:nth-child(16) { animation-delay: 3.20s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(17) { animation-delay: 3.28s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(18) { animation-delay: 3.36s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(19) { animation-delay: 3.44s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(20) { animation-delay: 3.52s; }
[data-venn].is-playing .overlap-nodes > circle:nth-child(21) { animation-delay: 3.60s; }

@keyframes vennDotPop {
  from { opacity: 0; transform: scale(0.2); }
  60%  { opacity: 1; transform: scale(1.35); }
  to   { opacity: 1; transform: scale(1); }
}

/* Intersection labels fade in after dots start populating */
[data-venn].is-playing .venn-inter-rf  { animation: vennLabelIn 0.6s ease-out 2.70s forwards; }
[data-venn].is-playing .venn-inter-fd  { animation: vennLabelIn 0.6s ease-out 2.80s forwards; }
[data-venn].is-playing .venn-inter-rd  { animation: vennLabelIn 0.6s ease-out 2.90s forwards; }
[data-venn].is-playing .venn-inter-all { animation: vennLabelIn 0.6s ease-out 3.60s forwards; }

/* Shared lime dots — the payoff (delays set above via nth-child 16..21) */
[data-venn].is-playing .venn-dot-shared {
  animation: vennSharedBurst 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  filter: drop-shadow(0 0 10px var(--color-signal-glow));
}
@keyframes vennSharedBurst {
  from { opacity: 0; transform: scale(0.2); filter: drop-shadow(0 0 0 var(--color-signal-glow)); }
  55%  { opacity: 1; transform: scale(1.6); filter: drop-shadow(0 0 20px var(--color-signal-glow)); }
  to   { opacity: 1; transform: scale(1); filter: drop-shadow(0 0 10px var(--color-signal-glow)); }
}

/* All-three payoff dot: bright entrance then infinite pulse */
[data-venn].is-playing .venn-dot-all {
  animation:
    vennAllBurst 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) 3.90s forwards,
    vennAllPulse 2.4s ease-in-out 4.80s infinite;
  filter: drop-shadow(0 0 14px var(--color-signal-glow));
}
@keyframes vennAllBurst {
  from { opacity: 0; transform: scale(0.2); }
  55%  { opacity: 1; transform: scale(2); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes vennAllPulse {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 8px var(--color-signal-glow)); }
  50%      { transform: scale(1.35); filter: drop-shadow(0 0 22px var(--color-signal-glow)); }
}

@media (prefers-reduced-motion: reduce) {
  [data-venn] .venn-fill,
  [data-venn] .venn-set-label,
  [data-venn] .venn-inter,
  [data-venn] .venn-dot { opacity: 1; transform: none; }
  [data-venn] .venn-outline { stroke-dashoffset: 0; }
  [data-venn].is-playing *,
  [data-venn].is-playing *::before,
  [data-venn].is-playing *::after { animation: none !important; }
}

/* ============ Overlap analysis ============ */
.overlap-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: stretch;
}
.overlap-diagram {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-4), 2vw, var(--space-6));
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 480px;
}
.overlap-facts {
  align-self: center;
}
.overlap-diagram svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}
.overlap-facts {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  justify-content: center;
}
.overlap-fact {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: var(--space-4);
  align-items: baseline;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive);
}
.overlap-fact:hover {
  border-color: var(--color-primary);
}
.overlap-fact-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 1rem + 2vw, 2.75rem);
  color: var(--color-primary);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.overlap-fact-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 2px;
}
.overlap-fact-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}
.overlap-note {
  margin-top: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-left: 2px solid var(--color-signal);
  background: var(--color-signal-soft);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

@media (max-width: 900px) {
  .overlap-layout {
    grid-template-columns: 1fr;
  }
}

/* ============ Signal model deep-dive ============ */
.signal-model {
  margin-top: clamp(var(--space-16), 6vw, var(--space-24));
  padding-top: clamp(var(--space-12), 4vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
}
.signal-model-head {
  display: grid;
  gap: var(--space-3);
  max-width: 640px;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-12));
}
.signal-model-head h3 {
  font-size: var(--text-xl);
}
.signal-model-head p {
  color: var(--color-text-muted);
}

.signal-diagram {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  grid-template-rows: repeat(3, auto);
  gap: var(--space-4) clamp(var(--space-8), 5vw, var(--space-16));
  padding-block: var(--space-8);
  align-items: stretch;
}
.signal-node-a { grid-column: 1; grid-row: 1; }
.signal-node-c { grid-column: 1; grid-row: 2; }
.signal-node-d { grid-column: 1; grid-row: 3; }
.confidence-gauge { grid-column: 2; grid-row: 1 / span 3; align-self: stretch; }
.signal-links {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.signal-links .link-anim path {
  stroke-dasharray: 6 10;
  animation: dashFlow 6s linear infinite;
}
@keyframes dashFlow {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: -160; }
}
@media (prefers-reduced-motion: reduce) {
  .signal-links .link-anim path { animation: none; }
}

.signal-node {
  position: relative;
  z-index: 1;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-interactive), transform var(--transition-interactive);
}
.signal-node:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.signal-node-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  margin-bottom: var(--space-3);
}
.signal-node h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}
.signal-node ul {
  list-style: none;
  display: grid;
  gap: var(--space-1);
}
.signal-node li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}
.signal-node li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.7;
}

.signal-hub {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.signal-hub-ring {
  position: absolute;
  inset: 0;
  border: 1px dashed var(--color-primary);
  border-radius: 50%;
  opacity: 0.55;
  animation: spin 20s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .signal-hub-ring { animation: none; }
}
.signal-hub-core {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 40%, var(--color-primary-glow), transparent 70%),
    var(--color-surface);
  border: 1px solid var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  box-shadow: 0 0 24px var(--color-primary-glow);
}
.signal-hub-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.signal-hub-sub {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

@media (max-width: 720px) {
  .signal-diagram {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .signal-node-a, .signal-node-c, .signal-node-d { grid-column: 1; grid-row: auto; }
  .confidence-gauge { grid-column: 1; grid-row: auto; }
  .signal-links, .signal-hub { display: none; }
}

.signal-note {
  margin-top: var(--space-8);
  padding: var(--space-4) var(--space-6);
  border-left: 2px solid var(--color-primary);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  background: var(--color-primary-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.signal-note strong {
  color: var(--color-text);
  font-weight: 500;
}

/* Confidence gauge */
.confidence-gauge {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  min-height: 320px;
}
.confidence-gauge svg {
  position: absolute;
  inset: var(--space-6);
  width: calc(100% - var(--space-12));
  height: calc(100% - var(--space-12));
}
.confidence-gauge-core {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  text-align: center;
}
.confidence-gauge-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 1rem + 2.5vw, 2.75rem);
  color: var(--color-primary);
  letter-spacing: -0.02em;
  font-weight: 500;
  line-height: 1;
}
.confidence-gauge-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
.confidence-gauge-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-signal);
}

/* ============ Reveal animation ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-10) clamp(var(--space-4), 4vw, var(--space-10));
}
.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-6);
  align-items: center;
}
.footer-brand {
  display: flex;
  flex-direction: column;
}
.footer-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: 60ch;
}
.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

@media (max-width: 720px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}