/* =============================================
   GT COC REDESIGN — Case Study Styles
   Shares design tokens with index.css
   ============================================= */

/* 1. TOKENS ─────────────────────────────────── */
:root {
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;

  --bg:         #F5F3EF;
  --bg-alt:     #EDEBE6;
  --bg-dark:    #1A1A1A;
  --surface:    #FFFFFF;
  --surface-2:  #F0EDE8;

  --text-1:     #1A1917;
  --text-2:     #4A4844;
  --text-3:     #6A6760;

  --accent:     #E8621A;
  --accent-2:   #C4541A;
  --gt-gold:    #B3A369;
  --gt-navy:    #003057;

  --border:     rgba(26,25,23,0.10);
  --border-2:   rgba(26,25,23,0.06);

  --radius-sm:  8px;
  --radius:     14px;
  --radius-lg:  22px;
  --radius-xl:  32px;

  --shadow-sm:  0 1px 4px rgba(0,0,0,0.05);
  --shadow:     0 4px 24px rgba(0,0,0,0.07);
  --shadow-lg:  0 12px 48px rgba(0,0,0,0.10);

  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:    cubic-bezier(0.7,  0, 0.84, 1);

  --topbar-h:   68px;
  --pnav-h:     48px;
  --container:  1100px;
  --gutter:     clamp(1.25rem, 5vw, 2rem);
}

[data-theme="dark"] {
  --bg:        #111110;
  --bg-alt:    #191918;
  --bg-dark:   #0C0C0B;
  --surface:   #1E1E1C;
  --surface-2: #252523;

  --text-1:    #F0EDE8;
  --text-2:    #C4C0B9;
  --text-3:    #8A8780;

  --border:    rgba(240,237,232,0.08);
  --border-2:  rgba(240,237,232,0.04);

  --shadow-sm: 0 1px 4px rgba(0,0,0,0.30);
  --shadow:    0 4px 24px rgba(0,0,0,0.40);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.50);
}

/* 2. RESET / BASE ───────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: var(--font-body); cursor: pointer; border: none; background: none; }
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.1; }
.skip-link { position: absolute; left: -9999px; top: 1rem; z-index: 9999; background: var(--text-1); color: var(--bg); padding: .4em 1em; border-radius: var(--radius-sm); font-size: .875rem; }
.skip-link:focus { left: 1rem; }

/* 3. LAYOUT UTILITIES ──────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}
.section--alt  { background: var(--bg-alt); }
.section--dark {
  background: var(--bg-dark);
  color: var(--text-1);
}
[data-theme="dark"] .section--dark { background: #0A0A09; }

/* Impact section: light in light mode, dark in dark mode */
.section--impact { background: var(--bg-alt); }
[data-theme="dark"] .section--impact {
  background: #0A0A09;
  color: var(--text-1);
}

/* 4. SCROLL PROGRESS BAR ────────────────────── */
#scroll-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  z-index: 9999;
  transition: width .1s linear;
}

/* 5. TOPBAR ─────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  z-index: 900;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  border-bottom: 1px solid var(--border);
  transition: background .3s;
}
.brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-1);
}
.brand-dot { color: var(--accent); }
.topnav { display: flex; gap: 2rem; }
.topnav a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color .2s;
  position: relative;
}
.topnav a:hover, .topnav a[aria-current="page"] { color: var(--text-1); }
.topnav a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.topbar-controls { display: flex; align-items: center; gap: 1rem; }
.theme-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--text-2);
  transition: background .2s, color .2s;
}
.theme-btn:hover { background: var(--surface-2); color: var(--text-1); }
.theme-btn svg { width: 18px; height: 18px; }
[data-theme="light"] .icon-sun,
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="light"] .icon-moon,
[data-theme="dark"]  .icon-sun  { display: block; }
.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px; height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.menu-btn span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* 6. PROCESS NAV ────────────────────────────── */
.process-nav {
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0;
  height: var(--pnav-h);
  z-index: 800;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.process-nav::-webkit-scrollbar { display: none; }
.process-nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.pnav-link {
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-3);
  white-space: nowrap;
  transition: color .2s;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.pnav-link:hover { color: var(--text-2); }
.pnav-link.active {
  color: var(--text-1);
  border-bottom-color: var(--accent);
}

/* Offset anchor targets for fixed nav */
main section[id] { scroll-margin-top: calc(var(--topbar-h) + var(--pnav-h) + 16px); }

/* 7. REVEAL ANIMATIONS ──────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* 8. HERO ───────────────────────────────────── */
.hero {
  padding-top: calc(var(--topbar-h) + var(--pnav-h) + clamp(3rem, 6vw, 5rem));
  padding-bottom: clamp(3rem, 6vw, 5rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}
.eyebrow {
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1.25rem;
}
.hero-sub {
  font-size: 1.0625rem;
  color: var(--text-2);
  max-width: 520px;
  margin-bottom: 1.75rem;
  line-height: 1.7;
}
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.75rem;
}
.pill {
  font-size: .8rem;
  font-weight: 500;
  padding: .3em .8em;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.pill--accent {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 25%, transparent);
}
.cta-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7em 1.5em;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  font-family: var(--font-display);
  transition: background .2s, color .2s, transform .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--text-1);
  color: var(--bg);
}
.btn--primary:hover { background: var(--accent); }
.btn--ghost {
  background: transparent;
  color: var(--text-1);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover { background: var(--surface-2); }
.hero-img-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-img-frame img {
  display: block;
  width: 100%;
  object-fit: cover;
}

/* Bold overlay badge on hero image */
.hero-img-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  pointer-events: none;
}
.hero-img-badge-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  background: rgba(179, 163, 105, 0.92);
  color: #1A1917;
  padding: .25em .7em;
  border-radius: 4px;
  width: fit-content;
}
.hero-img-badge-stat {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
  line-height: 1.1;
}

/* 9. IMAGE PLACEHOLDERS ─────────────────────── */
.img-placeholder {
  background: var(--surface-2);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  color: var(--text-3);
  font-size: .8125rem;
  text-align: center;
  padding: 2rem;
  min-height: 220px;
}
.img-placeholder svg { opacity: .5; }
.img-placeholder--hero { min-height: 340px; }
.img-placeholder--sm { min-height: 180px; }
.img-placeholder--tall { min-height: 340px; }
.img-placeholder--portrait { min-height: 280px; }

.full-img-frame {
  margin: 2.5rem 0 .75rem;
}
.full-img-frame .img-placeholder { border-radius: var(--radius-lg); min-height: 300px; }
figcaption {
  font-size: .8125rem;
  color: var(--text-3);
  text-align: center;
  margin-top: .6rem;
}

/* 10. SECTION LABELS ───────────────────────── */
.section-label {
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}
.section-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 1.75rem;
}
.section-lead {
  font-size: 1.0625rem;
  color: var(--text-2);
  max-width: 680px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}
.sub-heading {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 3.5rem 0 1rem;
}

/* 11. IMPACT — SCORES ──────────────────────── */
.scores-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.score-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
[data-theme="dark"] .score-card { background: var(--surface); }
.section--dark .score-card,
[data-theme="dark"] .section--impact .score-card {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.08);
}
.score-card--highlight {
  border-color: var(--gt-gold);
  background: color-mix(in srgb, var(--gt-gold) 6%, var(--surface));
}
.section--dark .score-card--highlight,
[data-theme="dark"] .section--impact .score-card--highlight {
  background: color-mix(in srgb, var(--gt-gold) 10%, transparent);
  border-color: var(--gt-gold);
}
.score-label {
  font-size: .8125rem;
  font-weight: 600;
  font-family: var(--font-display);
  color: var(--text-2);
  margin-bottom: .85rem;
}
.section--dark .score-label { color: var(--text-2); }
.score-bar-row {
  display: grid;
  grid-template-columns: 52px 1fr 42px;
  align-items: center;
  gap: .5rem;
  margin-bottom: .45rem;
}
.score-tag {
  font-size: .7rem;
  font-weight: 600;
  padding: .15em .5em;
  border-radius: 4px;
  text-align: center;
  letter-spacing: .03em;
}
.score-tag--before { background: rgba(0,0,0,0.07); color: var(--text-3); }
[data-theme="dark"] .score-tag--before { background: rgba(255,255,255,0.08); }
.score-tag--after  { background: color-mix(in srgb, var(--gt-gold) 20%, transparent); color: var(--gt-gold); }
.score-bar-wrap {
  background: var(--border-2);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}
.score-bar {
  height: 100%;
  border-radius: 999px;
  width: 0;
  transition: width 1.2s var(--ease-out);
}
.score-bar--before { background: var(--text-3); }
.score-bar--after  { background: var(--gt-gold); }
.score-num {
  font-size: .8125rem;
  font-weight: 600;
  font-family: var(--font-display);
  text-align: right;
  color: var(--text-2);
}
.score-num--after { color: var(--gt-gold); }
.score-note {
  font-size: .7375rem;
  color: var(--gt-gold);
  margin-top: .6rem;
  font-weight: 500;
}
.scores-footnote {
  font-size: .8rem;
  color: var(--text-3);
  text-align: center;
  margin-top: .5rem;
  margin-bottom: 2rem;
}
.section--dark .scores-footnote,
[data-theme="dark"] .section--impact .scores-footnote { color: var(--text-3); }

/* A/B callout */
.ab-callout {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
  border: 1.5px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}
.section--dark .ab-callout,
[data-theme="dark"] .section--impact .ab-callout {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.ab-callout-icon {
  width: 42px; height: 42px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--accent);
  flex-shrink: 0;
}
.ab-callout-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .9375rem;
  margin-bottom: .4rem;
}
.ab-callout-body { font-size: .9rem; color: var(--text-2); line-height: 1.65; }
.section--dark .ab-callout-body,
[data-theme="dark"] .section--impact .ab-callout-body { color: var(--text-2); }

/* Impact stats */
.impact-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.i-stat { text-align: center; }
.i-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--gt-gold);
  line-height: 1;
  margin-bottom: .35rem;
}
.i-unit { font-size: .65em; vertical-align: super; }
.i-label { font-size: .825rem; color: var(--text-2); }
.section--dark .i-label,
[data-theme="dark"] .section--impact .i-label { color: var(--text-2); }

/* 12. PROBLEM GRID ─────────────────────────── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.problem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: box-shadow .25s;
}
.problem-card:hover { box-shadow: var(--shadow); }
.problem-icon {
  width: 40px; height: 40px;
  background: color-mix(in srgb, var(--gt-navy) 10%, transparent);
  border-radius: var(--radius-sm);
  display: grid; place-items: center;
  color: var(--gt-navy);
  margin-bottom: 1rem;
}
[data-theme="dark"] .problem-icon {
  background: color-mix(in srgb, var(--gt-gold) 12%, transparent);
  color: var(--gt-gold);
}
.problem-card h3 {
  font-size: .9375rem;
  font-weight: 600;
  margin-bottom: .5rem;
}
.problem-card p { font-size: .875rem; color: var(--text-2); line-height: 1.65; }

/* 13. RESEARCH METHODS ──────────────────────── */
.methods-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.method-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.method-card--wide {
  grid-column: 1 / -1;
}
.method-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--border);
  line-height: 1;
  margin-bottom: .5rem;
}
.method-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: .35rem;
}
.method-stat {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: .85rem;
}
.stat-n::after { content: ''; }
.method-card p { font-size: .9rem; color: var(--text-2); line-height: 1.7; margin-bottom: 1rem; }
.method-img { margin-top: 1rem; }

.quote-block {
  background: var(--bg-alt);
  border-left: 3px solid var(--gt-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .85rem 1rem;
  margin: 1rem 0;
}
.quote-block blockquote {
  font-size: .9rem;
  font-style: italic;
  line-height: 1.6;
  color: var(--text-1);
  margin-bottom: .25rem;
}
.quote-block cite {
  font-size: .78rem;
  color: var(--text-3);
  font-style: normal;
  font-weight: 500;
}

/* 14. SYNTHESIS / PRIORITIES ───────────────── */
.priorities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem 0 3rem;
}
.priority-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.priority-n {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gt-gold);
  letter-spacing: -0.04em;
  margin-bottom: .6rem;
}
.priority-card h3 {
  font-size: .9375rem;
  font-weight: 700;
  margin-bottom: .5rem;
}
.priority-card p { font-size: .85rem; color: var(--text-2); line-height: 1.65; }

/* Personas */
.persona-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.persona-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  align-items: start;
}
.persona-img .img-placeholder--portrait { border-radius: var(--radius); }
.persona-info h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: .25rem;
}
.persona-role {
  font-size: .8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: .6rem;
}
.persona-quote {
  font-size: .875rem;
  font-style: italic;
  color: var(--text-3);
  margin-bottom: 1rem;
  border-left: 2px solid var(--gt-gold);
  padding-left: .75rem;
  line-height: 1.5;
}
.persona-needs {
  list-style: none;
  margin-bottom: .85rem;
}
.persona-needs li {
  font-size: .85rem;
  color: var(--text-2);
  padding: .3rem 0;
  border-bottom: 1px solid var(--border-2);
  display: flex;
  gap: .5rem;
}
.persona-needs li::before {
  content: '→';
  color: var(--gt-gold);
  flex-shrink: 0;
}
.persona-frustration { font-size: .83rem; color: var(--text-2); line-height: 1.6; }
.persona-frustration strong { color: var(--text-1); }

/* IA comparison */
.ia-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}
.ia-option {
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1.5px solid var(--border);
}
.ia-option--rejected { background: var(--surface-2); opacity: .8; }
.ia-option--chosen {
  background: color-mix(in srgb, var(--gt-gold) 6%, var(--surface));
  border-color: var(--gt-gold);
}
.ia-option-label {
  font-size: .8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .6rem;
  color: var(--text-3);
}
.ia-option--chosen .ia-option-label { color: var(--gt-gold); }
.ia-option p { font-size: .875rem; color: var(--text-2); line-height: 1.65; margin-bottom: .75rem; }
.ia-verdict {
  display: flex;
  align-items: flex-start;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 500;
  line-height: 1.55;
}
.ia-verdict svg { flex-shrink: 0; margin-top: 2px; }
.ia-verdict--reject { color: var(--text-3); }
.ia-verdict--accept { color: var(--gt-gold); }

/* 15. DESIGN DECISIONS ──────────────────────── */
.decision {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border-top: 1px solid var(--border);
}
.decision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.decision--flip .decision-grid { direction: rtl; }
.decision--flip .decision-grid > * { direction: ltr; }
.decision-index {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}
.decision-insight {
  font-size: .925rem;
  font-style: italic;
  color: var(--text-2);
  border-left: 3px solid var(--gt-gold);
  padding-left: 1rem;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.decision-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: .85rem;
}
.decision-text p {
  font-size: .9375rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: .85rem;
}
.decision-impact {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--gt-gold) !important;
  margin-top: 1.25rem;
  padding: .65rem .9rem;
  background: color-mix(in srgb, var(--gt-gold) 8%, transparent);
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--gt-gold) 20%, transparent);
}
.decision-impact svg { flex-shrink: 0; }

/* Before/After frames */
.ba-frame {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--surface);
}
.ba-frame .img-placeholder { border-radius: 0; }
.ba-label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .4rem .75rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  color: var(--text-3);
}
.ba-frame--after .ba-label {
  background: color-mix(in srgb, var(--gt-gold) 12%, var(--surface));
  color: var(--gt-gold);
  border-color: color-mix(in srgb, var(--gt-gold) 20%, transparent);
}
.ba-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* 16. VALIDATION ───────────────────────────── */
.validation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}
.v-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.v-type {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .25rem;
}
.v-platform {
  font-size: .8rem;
  color: var(--text-3);
  margin-bottom: 1rem;
}
.v-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: .75rem;
}
.v-card > p { font-size: .875rem; color: var(--text-2); line-height: 1.7; margin-bottom: 1rem; }
.v-results {
  list-style: none;
  margin-bottom: 1.25rem;
}
.v-results li {
  font-size: .875rem;
  color: var(--text-2);
  padding: .4rem 0;
  border-bottom: 1px solid var(--border-2);
  line-height: 1.5;
}
.v-results li::before {
  content: '↗ ';
  color: var(--gt-gold);
  font-weight: 600;
}
.v-note { font-size: .8rem; color: var(--text-2); line-height: 1.6; margin-top: 1rem; }

/* Score table */
.score-table {
  margin: 1.25rem 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.st-header, .st-row {
  display: grid;
  grid-template-columns: 2fr .7fr .7fr .7fr;
  gap: .5rem;
  padding: .65rem 1rem;
}
.st-header {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.st-row {
  font-size: .85rem;
  align-items: center;
  border-bottom: 1px solid var(--border-2);
}
.st-row:last-child { border-bottom: none; }
.st-row--highlight { background: color-mix(in srgb, var(--gt-gold) 6%, var(--surface)); }
.st-after { color: var(--gt-gold); font-weight: 600; }
.st-delta { font-weight: 700; font-size: .8rem; }
.st-delta--up { color: #22c55e; }

/* 17. PULL QUOTE ────────────────────────────── */
.pull-quote {
  text-align: center;
  padding: clamp(3rem, 6vw, 5rem) var(--gutter);
  max-width: 780px;
  margin: 0 auto;
}
.pull-quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--text-1);
  margin-bottom: 1rem;
}
.pull-quote figcaption {
  font-size: .875rem;
  color: var(--text-3);
}

/* 18. REFLECTION ───────────────────────────── */
.reflection-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: .5rem;
}
.reflection-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.reflection-card h4 {
  font-size: .9375rem;
  font-weight: 700;
  margin-bottom: .6rem;
  line-height: 1.35;
}
.reflection-card p { font-size: .875rem; color: var(--text-2); line-height: 1.7; }

/* 19. FOOTER ───────────────────────────────── */
.footer {
  background: var(--bg-dark);
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}
[data-theme="dark"] .footer { background: #0A0A09; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-back {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color .2s;
}
.footer-back:hover { color: var(--text-1); }
.footer-copy { font-size: .8125rem; color: var(--text-3); }

/* 20. RESPONSIVE ───────────────────────────── */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero h1 { font-size: clamp(2rem, 7vw, 3rem); }
  .scores-grid { grid-template-columns: 1fr; }
  .impact-stats { grid-template-columns: repeat(2, 1fr); }
  .problem-grid { grid-template-columns: 1fr; }
  .methods-grid { grid-template-columns: 1fr; }
  .method-card--wide { grid-column: 1; }
  .priorities-grid { grid-template-columns: 1fr 1fr; }
  .persona-grid { grid-template-columns: 1fr; }
  .persona-card { grid-template-columns: 1fr; }
  .ia-comparison { grid-template-columns: 1fr; }
  .decision-grid { grid-template-columns: 1fr; }
  .decision--flip .decision-grid { direction: ltr; }
  .validation-grid { grid-template-columns: 1fr; }
  .reflection-grid { grid-template-columns: 1fr; }
  .ba-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .topnav { display: none; }
  .menu-btn { display: flex; }
  .topnav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--topbar-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem var(--gutter) 1.75rem;
    gap: 1rem;
    z-index: 850;
  }
  .priorities-grid { grid-template-columns: 1fr; }
  .impact-stats { grid-template-columns: 1fr 1fr; }
  .st-header, .st-row { grid-template-columns: 1.5fr .5fr .5fr .6fr; }
}