/* ============================================================
   THE AI TRAINING GROUP — styles.css
   Complete design system. All styling lives here.
   No inline styles. No external CSS frameworks.
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES
   ============================================================ */
:root {
  --color-dark:      #37332f;
  --color-green:     #cfff85;
  --color-pale:      #f5ffe6;
  --color-beige:     #e5ded9;
  --color-ash:       #ccc7c2;
  --color-white:     #ffffff;
  --color-off-white: #f9f9f7;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Figtree', system-ui, sans-serif;

  --space-1:  8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-6:  48px;
  --space-8:  64px;
  --space-12: 96px;
  --space-16: 128px;

  --max-width:      1100px;
  --max-width-text: 700px;

  --transition: 200ms ease;
  --transition-md: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 17px;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-dark);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, iframe {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
  border: none;
  background: none;
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */

/* H1 — Playfair Display, display use only */
h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(48px, 7vw, 88px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

/* H2 — Figtree SemiBold */
h2 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* H3 — Figtree SemiBold */
h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(20px, 2vw, 24px);
  line-height: 1.3;
}

/* Body paragraphs */
p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark);
}

/* Eyebrow / label text */
.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-green);
}

.eyebrow--dark {
  color: var(--color-ash);
}

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container--text {
  max-width: var(--max-width-text);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

/* Section background variants */
.section--white     { background-color: var(--color-white); }
.section--off-white { background-color: var(--color-off-white); }
.section--dark      { background-color: var(--color-dark); }
.section--pale      { background-color: var(--color-pale); }

/* Text colour on dark sections */
.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.section--dark p,
.section--dark li {
  color: var(--color-beige);
}

/* Grid utilities */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.94rem;
  letter-spacing: 0.04em;
  padding: 14px 28px;
  border-radius: 0;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition), border-color var(--transition);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

/* Primary — green on dark */
.btn--primary {
  background-color: var(--color-green);
  color: var(--color-dark);
  border: 1.5px solid var(--color-green);
}

.btn--primary:hover {
  background-color: #bfef70;
  border-color: #bfef70;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(207, 255, 133, 0.18);
}

/* Secondary — outline on light backgrounds */
.btn--secondary {
  background-color: transparent;
  color: var(--color-dark);
  border: 1.5px solid var(--color-dark);
}

.btn--secondary:hover {
  background-color: var(--color-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* Secondary on dark backgrounds */
.btn--secondary-light {
  background-color: transparent;
  color: var(--color-beige);
  border: 1.5px solid var(--color-beige);
}

.btn--secondary-light:hover {
  background-color: var(--color-beige);
  color: var(--color-dark);
  transform: translateY(-1px);
}

/* CTA pulse — fires once on page load */
@keyframes cta-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(207, 255, 133, 0.5); }
  70%  { box-shadow: 0 0 0 10px rgba(207, 255, 133, 0); }
  100% { box-shadow: 0 0 0 0 rgba(207, 255, 133, 0); }
}

.btn--pulse {
  animation: cta-pulse 1.2s ease 0.8s 1;
}

/* Button row */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

/* ============================================================
   6. NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-2) 0;
  transition: background var(--transition-md), box-shadow var(--transition-md);
}

.nav--transparent {
  background-color: transparent;
}

.nav--solid {
  background-color: var(--color-dark);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.nav__logo {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-white);
  letter-spacing: 0.01em;
  flex-shrink: 0;
  text-decoration: none;
  line-height: 1.2;
}

.nav__logo span {
  display: block;
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-ash);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.nav__links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--color-beige);
  text-decoration: none;
  letter-spacing: 0.02em;
  position: relative;
  transition: color var(--transition);
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-green);
  transition: width var(--transition-md);
}

.nav__links a:hover {
  color: var(--color-white);
}

.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}

.nav__links a.active {
  color: var(--color-white);
}

.nav__cta {
  flex-shrink: 0;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-1);
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-md), opacity var(--transition);
}

/* Mobile nav overlay */
.nav__overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-dark);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.nav__overlay.is-open {
  display: flex;
}

.nav__overlay .nav__links {
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.nav__overlay .nav__links a {
  font-size: 1.2rem;
  color: var(--color-beige);
}

.nav__overlay .btn {
  margin-top: var(--space-2);
}

.nav__overlay-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--color-beige);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  font-family: var(--font-body);
}

/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  background-color: var(--color-dark);
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero--short {
  min-height: 50vh;
}

.hero--light {
  background-color: var(--color-white);
  min-height: 40vh;
}

/* Grain texture overlay */
.hero::before {
  content: '';
  position: absolute;
  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='0.04'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: var(--space-16) 0 var(--space-12);
}

.hero--short .hero__content {
  padding: var(--space-12) 0 var(--space-8);
}

.hero--light .hero__content {
  padding: var(--space-12) 0 var(--space-8);
}

.hero__eyebrow {
  margin-bottom: var(--space-3);
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-3);
  max-width: 820px;
}

.hero--light h1 {
  color: var(--color-dark);
}

.hero__sub {
  font-size: 1.18rem;
  color: var(--color-beige);
  max-width: 640px;
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.hero--light .hero__sub {
  color: var(--color-dark);
  opacity: 0.75;
}

/* ============================================================
   8. CARDS
   ============================================================ */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-beige);
  border-radius: 0;
  padding: var(--space-4);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-ash);
  box-shadow: 0 4px 20px rgba(55, 51, 47, 0.07);
}

.card--pale {
  background-color: var(--color-pale);
  border-color: rgba(207, 255, 133, 0.3);
}

.card--off-white {
  background-color: var(--color-off-white);
}

.card__eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-ash);
  margin-bottom: var(--space-2);
}

.card__title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-dark);
  margin-bottom: var(--space-1);
  line-height: 1.4;
}

.card__body {
  font-size: 0.94rem;
  color: var(--color-dark);
  opacity: 0.75;
  line-height: 1.6;
  margin-bottom: var(--space-2);
}

.card__link {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-dark);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.card__link:hover {
  gap: 8px;
}

/* ============================================================
   9. STATS STRIP
   ============================================================ */
.stats-strip {
  background-color: var(--color-dark);
  padding: var(--space-12) 0;
}

.stats-strip__inner {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: var(--space-12);
  flex-wrap: wrap;
  text-align: center;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.stat__number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  color: var(--color-green);
  line-height: 1;
}

.stat__label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-beige);
  max-width: 200px;
  text-align: center;
  line-height: 1.5;
}

/* ============================================================
   10. PROCESS STEPS
   ============================================================ */
.step {
  position: relative;
  padding-top: var(--space-6);
}

.step__number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 72px;
  color: var(--color-green);
  line-height: 1;
  margin-bottom: var(--space-2);
  opacity: 0.9;
}

.step h3 {
  margin-bottom: var(--space-2);
  color: var(--color-dark);
}

.step p {
  font-size: 0.94rem;
  color: var(--color-dark);
  opacity: 0.8;
}

/* ============================================================
   11. VIDEO PLACEHOLDER
   ============================================================ */
.video-wrap {
  max-width: 800px;
  margin: var(--space-6) auto 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-ash);
  background-color: #2a2824;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
}

.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-placeholder {
  text-align: center;
}

.video-placeholder__play {
  width: 64px;
  height: 64px;
  border: 2px solid var(--color-ash);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-2);
}

.video-placeholder__play svg {
  margin-left: 4px;
}

.video-placeholder__label {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-ash);
  letter-spacing: 0.06em;
}

/* ============================================================
   12. CASE STUDY CARDS (full-width stacked)
   ============================================================ */
.case-study {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-beige);
}

.case-study:last-of-type {
  border-bottom: none;
}

.case-study__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.case-study__eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ash);
  margin-bottom: var(--space-3);
}

.case-study h2 {
  margin-bottom: var(--space-6);
  max-width: 700px;
}

.case-study__body {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-6);
}

.case-study__section h3 {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ash);
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
}

.case-study__section p {
  font-size: 0.97rem;
  line-height: 1.7;
}

.case-study__stat {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-beige);
}

.case-study__stat-number {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4vw, 48px);
  color: var(--color-green);
  line-height: 1.1;
}

.case-study__stat-label {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-ash);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* ============================================================
   12b. ABOUT PAGE — two-column layout
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-8);
  align-items: start;
  margin-top: var(--space-6);
}

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.about-copy h2 {
  margin-bottom: var(--space-4);
}

.about-copy p + p {
  margin-top: var(--space-4);
}

/* About page photo */
.about-grid img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.about-footer-note {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-beige);
  font-size: 0.9rem;
  color: var(--color-ash);
  font-style: italic;
}

/* ============================================================
   13. BELIEF CARDS
   ============================================================ */
.belief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.belief-card {
  border-top: 3px solid var(--color-green);
  padding-top: var(--space-3);
}

.belief-card p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark);
  font-style: italic;
}

/* ============================================================
   14. BLOG / FIELD NOTES
   ============================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.post-card {
  border: 1px solid var(--color-beige);
  padding: var(--space-4);
  border-radius: 0;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.post-card:hover {
  border-color: var(--color-ash);
  box-shadow: 0 4px 20px rgba(55, 51, 47, 0.07);
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.post-card__date {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--color-ash);
}

.post-card__tag {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-dark);
  background-color: var(--color-pale);
  padding: 2px 8px;
  border-radius: 0;
}

.post-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
  line-height: 1.35;
}

.post-card p {
  font-size: 0.92rem;
  opacity: 0.7;
  margin-bottom: var(--space-2);
  line-height: 1.6;
}

.post-card__read-more {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-dark);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.post-card__read-more:hover {
  gap: 8px;
}

/* ============================================================
   15. CONTACT PAGE
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

.booking-iframe {
  width: 100%;
  min-height: 650px;
  border: none;
  display: block;
}

.contact-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-dark);
}

.contact-info ul {
  list-style: none;
  margin-bottom: var(--space-4);
}

.contact-info ul li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-beige);
  font-size: 0.97rem;
  line-height: 1.6;
  color: var(--color-dark);
}

.contact-info ul li:last-child {
  border-bottom: none;
}

.contact-info__direct {
  margin-top: var(--space-4);
}

.contact-info__direct p {
  font-size: 0.97rem;
  margin-bottom: var(--space-1);
}

.contact-info__direct a {
  color: var(--color-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================================================
   16. FOOTER
   ============================================================ */
.footer {
  background-color: var(--color-dark);
  padding: var(--space-8) 0 var(--space-4);
}

.footer__main {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: var(--space-4);
}

.footer__brand .footer__logo {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-white);
  display: block;
  margin-bottom: var(--space-2);
}

.footer__tagline {
  font-size: 0.88rem;
  color: var(--color-ash);
  line-height: 1.6;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
}

.footer__nav a {
  font-size: 0.9rem;
  color: var(--color-beige);
  transition: color var(--transition);
  text-decoration: none;
}

.footer__nav a:hover {
  color: var(--color-white);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-end;
}

.footer__contact a {
  font-size: 0.9rem;
  color: var(--color-beige);
  transition: color var(--transition);
  text-decoration: none;
}

.footer__contact a:hover {
  color: var(--color-white);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer__bottom p,
.footer__bottom a {
  font-size: 0.82rem;
  color: var(--color-ash);
  text-decoration: none;
}

.footer__bottom a:hover {
  color: var(--color-beige);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-3);
}

/* ============================================================
   17. CALLOUT BOX
   ============================================================ */
.callout {
  background-color: var(--color-pale);
  border: 1px solid rgba(207, 255, 133, 0.3);
  padding: var(--space-4);
  margin: var(--space-6) 0;
}

.callout h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-dark);
}

.callout ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.callout ul li {
  font-size: 0.97rem;
  color: var(--color-dark);
  padding-left: var(--space-3);
  position: relative;
  line-height: 1.6;
}

.callout ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-weight: 700;
}

.callout__note {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(207, 255, 133, 0.25);
  font-size: 0.88rem;
  color: var(--color-dark);
  opacity: 0.7;
}

/* ============================================================
   18. ABOUT PHOTO PLACEHOLDER
   ============================================================ */
.photo-placeholder {
  background-color: var(--color-off-white);
  border: 1px solid var(--color-beige);
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
}

.photo-placeholder p {
  font-size: 0.82rem;
  color: var(--color-ash);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

/* ============================================================
   19. SCROLL ANIMATION
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   20. ABOUT YOU — long-form reading page
   ============================================================ */
.longform {
  max-width: var(--max-width-text);
  margin: 0 auto;
  padding: var(--space-12) var(--space-4);
}

.longform__header {
  background: var(--color-off-white);
  padding: var(--space-16) 0 var(--space-10);
  margin-bottom: 0;
}

.longform__header h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin-top: var(--space-4);
  margin-bottom: var(--space-3);
  max-width: 800px;
}

.longform__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.longform__back {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ash);
  text-decoration: none;
  border-bottom: 1px solid var(--color-beige);
  padding-bottom: 1px;
}

.longform__back:hover {
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.longform__byline {
  font-size: 0.9rem;
  color: var(--color-ash);
  margin-top: 0;
  margin-bottom: 0;
}

.longform__body {
  padding: var(--space-12) 0 var(--space-16);
}

.longform__body .container {
  max-width: 720px;
}

.longform p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-dark);
  margin-bottom: var(--space-4);
}

.longform h2 {
  font-family: var(--font-body);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
}

.longform h3 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.longform blockquote {
  border-left: 3px solid var(--color-green);
  margin: var(--space-6) 0;
  padding: var(--space-4) var(--space-6);
  background: var(--color-off-white);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-dark);
}

.longform ul {
  margin: var(--space-3) 0 var(--space-4) var(--space-5);
  padding: 0;
}

.longform ul li {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-dark);
  margin-bottom: var(--space-2);
  list-style: disc;
}

.longform .longform__divider {
  text-align: center;
  color: var(--color-ash);
  font-size: 1.2rem;
  letter-spacing: 0.3em;
  margin: var(--space-6) 0;
  display: block;
}

.longform .longform__cta {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-beige);
  font-size: 1rem;
  color: var(--color-ash);
}

.longform .longform__cta a {
  color: var(--color-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.longform .longform__cta-sub {
  font-size: 0.9rem;
  color: var(--color-ash);
  margin-top: var(--space-2);
  text-align: center;
}

.longform .longform__cta-sub a {
  color: var(--color-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================================================
   21. UTILITY
   ============================================================ */
.text-center { text-align: center; }
.text-green  { color: var(--color-green); }
.text-beige  { color: var(--color-beige); }
.text-ash    { color: var(--color-ash); }
.text-white  { color: var(--color-white); }

.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

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

/* ============================================================
   21b. ADDITIONAL UTILITIES — replaces all inline styles
   ============================================================ */

/* Max-text width container for constrained text blocks */
.max-text {
  max-width: var(--max-width-text);
}

/* Centred button row */
.btn-row--center {
  justify-content: center;
}

/* Section lead text — dark sections, centred, max-width 640px */
.section-lead {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-beige);
  line-height: 1.7;
}

/* Section lead — narrower, 600px */
.section-lead--narrow {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-beige);
  line-height: 1.7;
}

/* CTA footnote — small note below CTA buttons */
.cta-footnote {
  font-size: 0.9rem;
  color: var(--color-ash);
  margin-top: var(--space-4);
}

.cta-footnote a {
  color: var(--color-beige);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Italic note in light sections */
.note-italic {
  color: var(--color-ash);
  font-style: italic;
  margin-bottom: var(--space-3);
}

/* Placeholder note — small descriptive text inside placeholder divs */
.placeholder-note {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.82rem;
  opacity: 0.6;
  display: block;
  margin-top: 8px;
}

/* Smaller placeholder note variant */
.placeholder-note--xs {
  font-size: 0.75rem;
  opacity: 0.6;
}

/* Video placeholder sub-label */
.video-placeholder__sublabel {
  font-size: 0.75rem;
  opacity: 0.6;
  display: block;
  margin-top: 4px;
}

/* Editorial hero — light background pages (about-you, field-notes) */
.hero--editorial {
  background-color: var(--color-white);
  padding-top: 140px;
  padding-bottom: var(--space-8);
}

.hero--editorial h1 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-dark);
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.15;
}

/* Field Notes editorial hero — slightly larger h1, with subtitle */
.hero--field-notes {
  background-color: var(--color-white);
  padding-top: 140px;
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-beige);
}

.hero--field-notes h1 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-dark);
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.1;
}

.hero--field-notes .hero__sub {
  font-size: 1.1rem;
  color: var(--color-ash);
  margin-top: var(--space-2);
  max-width: 520px;
  margin-bottom: 0;
}

/* ============================================================
   21c. NAV — LIGHT PAGE VARIANT
   Used on pages with white/light backgrounds (about-you, field-notes)
   ============================================================ */
.nav--light-page {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-beige);
}

.nav--light-page .nav__logo {
  color: var(--color-dark);
}

.nav--light-page .nav__logo span {
  color: var(--color-ash);
}

.nav--light-page .nav__links a {
  color: var(--color-dark);
  opacity: 0.75;
}

.nav--light-page .nav__links a:hover {
  color: var(--color-dark);
  opacity: 1;
}

.nav--light-page .nav__links a.active {
  color: var(--color-dark);
  opacity: 1;
}

.nav--light-page .nav__hamburger span {
  background-color: var(--color-dark);
}

/* ============================================================
   22. RESPONSIVE — TABLET (768px)
   ============================================================ */
@media (max-width: 900px) {
  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }

  .case-study__body {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .belief-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

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

  .footer__contact {
    align-items: flex-start;
  }

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

/* ============================================================
   23. RESPONSIVE — MOBILE (375px–767px)
   ============================================================ */
@media (max-width: 767px) {
  html {
    font-size: 16px;
  }

  .section {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__overlay.is-open .nav__links {
    display: flex;
  }

  .nav__hamburger {
    display: flex;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .stats-strip__inner {
    gap: var(--space-6);
  }

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

  .footer__main {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .footer__nav {
    align-items: flex-start;
  }

  .footer__contact {
    align-items: flex-start;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .case-study__body {
    grid-template-columns: 1fr;
  }

  .btn-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__content {
    padding-top: var(--space-12);
    padding-bottom: var(--space-8);
  }

  .longform {
    padding: var(--space-8) var(--space-4);
  }
}