/* ============================================================
   DR RON EHRLICH — DESIGN SYSTEM
   Typography: EB Garamond (display/headings) + IBM Plex Sans (body/UI)
   Modular scale: 1.250 (Major Third), base 18px
   Palette: Ink / Paper / Clinical Blue / Graphite / Signal Red
   Grid: 12-col fluid, max 1440px
   ============================================================ */

/* ============================================================
   1. CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Palette */
  --color-ink:        #1A1A1A;
  --color-paper:      #F9F8F6;
  --color-blue:       #004B87;
  --color-blue-dark:  #003560;
  --color-blue-light: #E8F0F8;
  --color-graphite:   #595959;
  --color-red:        #D32F2F;
  --color-border:     #D8D5D0;
  --color-white:      #FFFFFF;

  /* Type scale (Major Third 1.250, base 18px) */
  --text-xs:    0.800rem;   /* 12.8px */
  --text-sm:    0.900rem;   /* 14.4px */
  --text-base:  1.125rem;   /* 18px   */
  --text-md:    1.406rem;   /* 22.5px */
  --text-lg:    1.563rem;   /* 25px   */
  --text-xl:    1.953rem;   /* 31.2px */
  --text-2xl:   2.441rem;   /* 39px   */
  --text-3xl:   3.052rem;   /* 48.8px */
  --text-4xl:   3.815rem;   /* 61px   */

  /* Fonts */
  --font-serif:  'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:   'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing (8px grid) */
  --space-1:    0.5rem;
  --space-2:    1rem;
  --space-3:    1.5rem;
  --space-4:    2rem;
  --space-6:    3rem;
  --space-8:    4rem;
  --space-12:   6rem;
  --space-16:   8rem;
  --space-20:  10rem;

  /* Layout */
  --max-width:  1440px;
  --content-width: 1200px;
  --measure:    68ch;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Header height */
  --header-h: 72px;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

input, select, textarea {
  font: inherit;
}

/* Screen-reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

h1 { font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl)); }
h2 { font-size: clamp(var(--text-xl), 3vw, var(--text-2xl)); }
h3 { font-size: clamp(var(--text-lg), 2vw, var(--text-xl)); }
h4 { font-size: var(--text-lg); }

p {
  max-width: var(--measure);
  line-height: 1.65;
}

em { font-style: italic; }

strong { font-weight: 600; }

blockquote {
  border-left: 3px solid var(--color-blue);
  padding-left: var(--space-4);
  margin: var(--space-4) 0;
}

blockquote p {
  font-family: var(--font-serif);
  font-size: var(--text-md);
  font-style: italic;
  line-height: 1.5;
  color: var(--color-ink);
}

blockquote cite {
  display: block;
  margin-top: var(--space-2);
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-graphite);
  font-family: var(--font-sans);
}

blockquote cite strong {
  display: block;
  font-weight: 600;
  color: var(--color-ink);
  font-size: var(--text-base);
}

/* Eyebrow labels */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-blue);
  max-width: none;
  line-height: 1;
}

/* Text links */
.text-link {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-blue);
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.text-link:hover {
  color: var(--color-blue-dark);
}

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(var(--space-3), 5vw, var(--space-8));
}

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1;
  padding: 0.875em 1.75em;
  border-radius: 2px;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border: 1px solid var(--color-blue);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-blue-dark);
  border-color: var(--color-blue-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--color-ink);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-graphite);
  border: 1px solid transparent;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-ghost:hover {
  color: var(--color-ink);
  border-color: var(--color-border);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

/* ============================================================
   6. HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 100%;
}

/* Wordmark */
.wordmark {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  flex-shrink: 0;
}

.wordmark-name {
  font-family: var(--font-serif);
  font-size: var(--text-md);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  line-height: 1;
}

.wordmark-credential {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-graphite);
  line-height: 1;
}

/* Primary nav */
.primary-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.primary-nav a {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-graphite);
  transition: color var(--transition-fast);
  padding-block: 0.25em;
  border-bottom: 1px solid transparent;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 2px;
}

.nav-toggle span {
  display: block;
  height: 1.5px;
  background-color: var(--color-ink);
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
}

.mobile-nav a {
  display: block;
  padding: var(--space-2) clamp(var(--space-3), 5vw, var(--space-8));
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav li:last-child a {
  border-bottom: none;
}

/* ============================================================
   7. HERO
   ============================================================ */
.hero {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-paper);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-8);
  align-items: center;
}

.hero-content {
  max-width: 680px;
}

.hero-content .eyebrow {
  margin-bottom: var(--space-3);
}

.hero-content h1 {
  margin-bottom: var(--space-4);
}

.hero-sub {
  font-size: var(--text-md);
  color: var(--color-graphite);
  margin-bottom: var(--space-6);
  max-width: 56ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Typographic plate */
.typographic-plate {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  background-color: var(--color-ink);
  color: var(--color-paper);
  padding: var(--space-6);
  min-width: 200px;
  max-width: 240px;
}

.typographic-plate--dark {
  background-color: var(--color-blue);
}

.plate-numeral {
  font-family: var(--font-serif);
  font-size: var(--text-4xl);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-paper);
}

.plate-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.7);
  line-height: 1.4;
  max-width: none;
}

.plate-rule {
  height: 1px;
  background-color: rgba(249, 248, 246, 0.2);
  margin-block: var(--space-3);
}

/* ============================================================
   8. CREDENTIAL STRIP
   ============================================================ */
.credential-strip {
  background-color: var(--color-ink);
  padding-block: var(--space-3);
  overflow: hidden;
}

.credential-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  justify-content: center;
}

.credential-item {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.7);
  white-space: nowrap;
}

.credential-divider {
  color: rgba(249, 248, 246, 0.3);
  font-size: var(--text-xs);
}

/* ============================================================
   9. POSITIONING SECTION
   ============================================================ */
.positioning {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  border-bottom: 1px solid var(--color-border);
}

.positioning-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: start;
}

.positioning-text h2 {
  margin-bottom: var(--space-4);
}

.positioning-text p {
  margin-bottom: var(--space-3);
  color: var(--color-graphite);
}

.positioning-text .text-link {
  margin-top: var(--space-2);
  display: inline-block;
}

.positioning-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-top: var(--space-2);
}

.stat-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.stat-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.stat-numeral {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-ink);
}

.stat-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-graphite);
  line-height: 1.5;
  max-width: 24ch;
}

/* ============================================================
   10. REVENUE ROUTER
   ============================================================ */
.revenue-router {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header h2 {
  margin-bottom: var(--space-3);
}

.section-sub {
  font-size: var(--text-md);
  color: var(--color-graphite);
  max-width: 52ch;
  margin-inline: auto;
}

.section-header--left {
  text-align: left;
}

.section-header--left .section-sub {
  margin-inline: 0;
}

.router-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.router-card {
  border: 1px solid var(--color-border);
  background-color: var(--color-paper);
  transition: border-color var(--transition-base);
}

.router-card:hover {
  border-color: var(--color-graphite);
}

.router-card--primary {
  border-color: var(--color-blue);
  background-color: var(--color-blue-light);
}

.router-card-inner {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
  max-width: none;
  line-height: 1;
}

.router-card h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-1);
}

.router-card p {
  font-size: var(--text-sm);
  color: var(--color-graphite);
  line-height: 1.6;
}

.card-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-1);
}

.card-features li {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-graphite);
  padding-left: 1em;
  position: relative;
  line-height: 1.5;
}

.card-features li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-blue);
}

.router-card .btn {
  margin-top: var(--space-2);
  align-self: flex-start;
}

/* ============================================================
   11. CONSULTING CTA
   ============================================================ */
.consulting-cta {
  background-color: var(--color-ink);
  padding-block: clamp(var(--space-12), 8vw, var(--space-16));
}

.consulting-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-6);
}

.cta-content h2 {
  color: var(--color-paper);
  margin-bottom: var(--space-3);
}

.cta-content p {
  color: rgba(249, 248, 246, 0.75);
  font-size: var(--text-md);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

.consulting-cta .btn-primary {
  background-color: var(--color-paper);
  color: var(--color-ink);
  border-color: var(--color-paper);
}

.consulting-cta .btn-primary:hover {
  background-color: var(--color-white);
  border-color: var(--color-white);
}

.consulting-cta .btn-secondary {
  color: var(--color-paper);
  border-color: rgba(249, 248, 246, 0.4);
}

.consulting-cta .btn-secondary:hover {
  border-color: var(--color-paper);
}

/* ============================================================
   12. PODCAST SECTION
   ============================================================ */
.podcast-section {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-paper);
}

.podcast-inner {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: start;
}

.podcast-inner .section-header--left h2 {
  margin-bottom: var(--space-3);
}

.podcast-inner .section-sub {
  margin-bottom: var(--space-6);
}

.podcast-episodes {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.episode-card {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.episode-card:first-child {
  padding-top: 0;
}

.episode-category {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-blue);
}

.episode-title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-top: var(--space-1);
}

.episode-guest {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-graphite);
}

.episode-excerpt {
  font-size: var(--text-sm);
  color: var(--color-graphite);
  line-height: 1.5;
  margin-top: var(--space-1);
}

.episode-card .text-link {
  margin-top: var(--space-2);
  display: inline-block;
}

/* ============================================================
   13. BOOK SECTION
   ============================================================ */
.book-section {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.book-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: center;
}

/* Typographic book cover */
.book-plate {
  flex-shrink: 0;
}

.book-cover-typographic {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background-color: var(--color-ink);
  color: var(--color-paper);
  padding: var(--space-6) var(--space-4);
  width: 200px;
  min-height: 280px;
  justify-content: space-between;
}

.book-cover-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.book-cover-sub {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.6);
  line-height: 1.4;
}

.book-cover-author {
  font-family: var(--font-serif);
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-paper);
  margin-top: auto;
}

.book-cover-publisher {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(249, 248, 246, 0.65);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-content .eyebrow {
  margin-bottom: var(--space-3);
}

.book-content h2 {
  margin-bottom: var(--space-4);
}

.book-content p {
  color: var(--color-graphite);
  margin-bottom: var(--space-4);
}

.book-content blockquote {
  margin-block: var(--space-6);
}

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

/* ============================================================
   14. ABOUT SECTION
   ============================================================ */
.about-section {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-paper);
}

.about-inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: start;
}

.about-image-placeholder {
  background-color: var(--color-ink);
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
}

.image-placeholder-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.placeholder-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.5);
}

.image-placeholder-inner p {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(249, 248, 246, 0.7);
  line-height: 1.6;
  font-style: italic;
}

.about-content .eyebrow {
  margin-bottom: var(--space-3);
}

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

.about-content p {
  color: var(--color-graphite);
  margin-bottom: var(--space-3);
}

.about-content .text-link {
  margin-top: var(--space-2);
  display: inline-block;
}

/* ============================================================
   15. TESTIMONIALS
   ============================================================ */
.testimonials {
  padding-block: clamp(var(--space-12), 8vw, var(--space-16));
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.testimonial {
  border-left: none;
  padding-left: 0;
}

.testimonial p {
  font-family: var(--font-serif);
  font-size: var(--text-md);
  font-style: italic;
  line-height: 1.5;
  color: var(--color-ink);
  margin-bottom: var(--space-4);
}

.testimonial cite {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-style: normal;
}

.testimonial cite strong {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-ink);
}

.testimonial cite span {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-graphite);
}

/* ============================================================
   16. FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--color-ink);
  color: var(--color-paper);
}

.footer-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-8);
  padding-block: var(--space-12);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-brand .wordmark-name {
  color: var(--color-paper);
}

.footer-brand .wordmark-credential {
  color: rgba(249, 248, 246, 0.5);
}

.footer-tagline {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(249, 248, 246, 0.5);
  font-style: italic;
  margin-top: var(--space-2);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.footer-nav-col h3 {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(249, 248, 246, 0.5);
  margin-bottom: var(--space-3);
}

.footer-nav-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-nav-col a {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: rgba(249, 248, 246, 0.75);
  transition: color var(--transition-fast);
}

.footer-nav-col a:hover {
  color: var(--color-paper);
}

.footer-base {
  border-top: 1px solid rgba(249, 248, 246, 0.1);
}

.footer-base-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--space-4);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-base p {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(249, 248, 246, 0.65);
  max-width: none;
}

.footer-independence {
  font-style: italic;
}

/* ============================================================
   17. CORPORATE PAGE — ADDITIONAL STYLES
   ============================================================ */
.hero--corporate {
  background-color: var(--color-blue-light);
  border-bottom: 1px solid var(--color-border);
}

/* Economics section */
.economics {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-white);
}

.economics-inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: start;
}

.economics-content .eyebrow {
  margin-bottom: var(--space-3);
}

.economics-content h2 {
  margin-bottom: var(--space-4);
}

.economics-content p {
  color: var(--color-graphite);
  margin-bottom: var(--space-3);
}

.economics-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.metric-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.metric-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.metric-numeral {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-blue);
}

.metric-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-graphite);
  line-height: 1.5;
  max-width: 24ch;
}

/* Methodology */
.methodology {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-paper);
}

.methodology-phases {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-8);
}

.phase-block {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-6);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  align-items: start;
}

.phase-block:last-child {
  border-bottom: 1px solid var(--color-border);
}

.phase-number {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 500;
  color: var(--color-border);
  line-height: 1;
  letter-spacing: -0.03em;
  padding-top: 4px;
}

.phase-content h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.phase-content p {
  color: var(--color-graphite);
  margin-bottom: var(--space-3);
}

.phase-deliverable {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-blue);
  font-style: italic;
  margin-bottom: 0 !important;
}

/* Pillars */
.pillars {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.pillar-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
}

.pillar-number {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-border);
  line-height: 1;
  letter-spacing: -0.02em;
}

.pillar-item h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-1);
}

.pillar-item p {
  font-size: var(--text-sm);
  color: var(--color-graphite);
  line-height: 1.6;
}

/* Testimonial feature */
.testimonial-feature {
  padding-block: clamp(var(--space-12), 8vw, var(--space-16));
  background-color: var(--color-blue);
}

.testimonial-feature-quote {
  border-left: none;
  padding-left: 0;
  max-width: 800px;
  margin-inline: auto;
  text-align: center;
}

.testimonial-feature-quote p {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl));
  font-style: italic;
  line-height: 1.4;
  color: var(--color-paper);
  max-width: none;
  margin-bottom: var(--space-6);
}

.testimonial-feature-quote cite {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.testimonial-feature-quote cite strong {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-paper);
}

.testimonial-feature-quote cite span {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(249, 248, 246, 0.7);
}

/* Assessment form */
.assessment-form-section {
  padding-block: clamp(var(--space-12), 10vw, var(--space-20));
  background-color: var(--color-paper);
}

.assessment-form-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 8vw, var(--space-16));
  align-items: start;
}

.form-content .eyebrow {
  margin-bottom: var(--space-3);
}

.form-content h2 {
  margin-bottom: var(--space-4);
}

.form-content p {
  color: var(--color-graphite);
  margin-bottom: var(--space-3);
}

/* Form styles */
.enquiry-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-graphite);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75em 1em;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-ink);
  font-size: var(--text-sm);
  border-radius: 2px;
  transition: border-color var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-border);
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23595959' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.5em;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-note {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-graphite);
  font-style: italic;
  max-width: none;
  text-align: center;
}

/* ============================================================
   18. THE ONE NON-OBVIOUS INTERACTION
   Header scroll behaviour: on scroll down, the header compresses
   and the credential line fades, giving more reading space.
   On scroll up, it restores. This is functional, not decorative.
   ============================================================ */
.site-header.scrolled .wordmark-credential {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
}

.site-header.scrolled {
  height: 56px;
}

.wordmark-credential {
  transition: opacity var(--transition-base), max-height var(--transition-base);
  max-height: 20px;
  overflow: hidden;
}

.site-header {
  transition: height var(--transition-base);
}

/* ============================================================
   19. RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-plate {
    display: none;
  }

  .positioning-inner {
    grid-template-columns: 1fr;
  }

  .positioning-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-6);
  }

  .stat-block {
    flex: 1;
    min-width: 140px;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
    padding-bottom: 0;
    padding-right: var(--space-6);
  }

  .stat-block:last-child {
    border-right: none;
    padding-right: 0;
  }

  .router-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-inline: auto;
  }

  .podcast-inner {
    grid-template-columns: 1fr;
  }

  .book-inner {
    grid-template-columns: 1fr;
  }

  .book-plate {
    display: flex;
    justify-content: center;
  }

  .about-inner {
    grid-template-columns: 1fr;
  }

  .about-image-placeholder {
    max-width: 380px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Corporate page */
  .economics-inner {
    grid-template-columns: 1fr;
  }

  .economics-metrics {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .metric-block {
    flex: 1;
    min-width: 140px;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
    padding-bottom: 0;
    padding-right: var(--space-6);
  }

  .metric-block:last-child {
    border-right: none;
  }

  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .assessment-form-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .primary-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-actions .btn-ghost {
    display: none;
  }

  .router-grid {
    max-width: 100%;
  }

  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-nav {
    grid-template-columns: 1fr 1fr;
  }

  .footer-base-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .phase-block {
    grid-template-columns: 48px 1fr;
    gap: var(--space-3);
  }

  .enquiry-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: 1fr;
  }

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

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

/* ============================================================
   20. PRINT
   ============================================================ */
@media print {
  .site-header,
  .hero-plate,
  .credential-strip,
  .consulting-cta,
  .site-footer {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  h1, h2, h3 {
    page-break-after: avoid;
  }
}