:root {
  --night-1000: #05090d;
  --night-950: #081019;
  --night-900: #0d1823;
  --night-850: #12212d;
  --paper: #f3f1ea;
  --paper-light: #faf9f5;
  --paper-cool: #e9efed;
  --ink: #101923;
  --ink-soft: #3e4b55;
  --muted-dark: #91a4b4;
  --line: #cfd3cf;
  --line-dark: rgba(177, 205, 213, 0.16);
  --cyan: #6fe4da;
  --cyan-bright: #9af1e9;
  --sky: #38bdf8;
  --sky-dark: #25a5dc;
  --sky-new: #0c4a6e;
  --teal: #137f71;
  --teal-dark: #0c574e;
  --danger-soft: #f0b27b;
  --container: 1220px;
  --page-gutter: clamp(18px, 5vw, 64px);
  --font-display: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

.home-commercial {
  color: var(--ink);
  background: var(--paper);
}

.home-commercial a {
  color: inherit;
  text-decoration: none;
}

.home-commercial button,
.home-commercial input,
.home-commercial textarea {
  font: inherit;
}

.home-commercial button,
.home-commercial a {
  -webkit-tap-highlight-color: transparent;
}

.home-commercial svg {
  display: block;
}

.container {
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--container));
  margin-inline: auto;
}

.section-kicker,
.mono-label {
  margin: 0;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  line-height: 1.5;
  text-transform: uppercase;
}

.section-heading h2,
.commercial-heading h2,
.proof-copy h2,
.faq-section h2 {
  margin: 14px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 4.5vw, 4.65rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
  text-wrap: balance;
}

.section-heading-split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.62fr);
  gap: clamp(40px, 7vw, 96px);
  align-items: end;
}

.section-heading-split > p {
  max-width: 52ch;
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.72;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 34px;
  color: var(--teal-dark) !important;
  font-size: 0.9rem;
  font-weight: 750;
}

.text-link span {
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.button:focus-visible,
.menu-toggle:focus-visible,
.home-commercial a:focus-visible,
.home-commercial summary:focus-visible,
.home-commercial input:focus-visible,
.home-commercial textarea:focus-visible,
.home-commercial button:focus-visible {
  outline: 3px solid rgba(56, 189, 248, 0.72);
  outline-offset: 3px;
}

/* Header */

.site-shell {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  color: #eef8f7;
  background:
    radial-gradient(circle at 78% 36%, rgba(25, 131, 120, 0.24), transparent 31%),
    radial-gradient(circle at 18% 16%, rgba(62, 111, 168, 0.16), transparent 34%),
    linear-gradient(118deg, var(--night-1000) 0%, var(--night-950) 50%, #102733 100%);
}

.site-shell::before {
  content: "51";
  position: absolute;
  right: -0.04em;
  bottom: -0.24em;
  z-index: -1;
  color: rgba(164, 234, 225, 0.025);
  font-family: var(--font-display);
  font-size: clamp(19rem, 42vw, 44rem);
  font-weight: 500;
  letter-spacing: -0.12em;
  line-height: 0.8;
  pointer-events: none;
}

.site-shell::after {
  content: "";
  position: absolute;
  inset: 76px 0 0;
  z-index: -2;
  opacity: 0.34;
  background-image:
    linear-gradient(rgba(147, 195, 203, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 195, 203, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to right, transparent 0%, #000 32%, #000 100%);
  pointer-events: none;
}

.site-header {
  position: relative;
  z-index: 30;
  border-bottom: 1px solid rgba(137, 176, 186, 0.13);
  background: rgba(5, 9, 13, 0.79);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-row {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 750;
  letter-spacing: -0.045em;
}

.brand-name span {
  color: var(--sky);
}

.desktop-nav {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  gap: 3px;
}

.desktop-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  border-bottom: 2px solid transparent;
  color: var(--muted-dark);
  font-size: 0.86rem;
  font-weight: 650;
  transition: color 160ms ease, border-color 160ms ease;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible {
  color: #fff;
  border-bottom-color: var(--cyan);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 0 0 auto;
}

.sign-in {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted-dark);
  font-size: 0.86rem;
  font-weight: 650;
  line-height: 1;
  white-space: nowrap;
  transition: color 160ms ease;
}

.sign-in svg {
  flex: 0 0 auto;
}

.sign-in:hover,
.sign-in:focus-visible {
  color: #fff;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 750;
  line-height: 1.2;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-cyan {
  color: var(--night-950) !important;
  background: var(--sky);
  box-shadow: 0 10px 28px rgba(56, 189, 248, 0.16);
}

.button-cyan:hover {
  background: var(--sky-dark);
  box-shadow: 0 13px 32px rgba(56, 189, 248, 0.23);
}

.button-electric {
  color: var(--night-950) !important;
  background: #9fbfe3;
  box-shadow: 0 8px 24px rgba(69, 124, 177, 0.18);
}

.button-electric:hover {
  background: #bdd3ea;
}

.button-outline-dark {
  color: #f1f8f8 !important;
  background: rgba(255, 255, 255, 0.035);
  border-color: rgba(168, 203, 209, 0.24);
}

.button-outline-dark:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(168, 203, 209, 0.42);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(168, 203, 209, 0.24);
  border-radius: 8px;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 76px;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 50;
  padding: 18px 20px 32px;
  background: rgba(5, 9, 13, 0.99);
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a:not(.button) {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #d8e5e7;
  border-bottom: 1px solid #1e2c35;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
}

.mobile-nav .button {
  width: 100%;
  margin-top: 22px;
}

/* ===========================================================================
   Editorial Backend Services Hero
   ========================================================================== */

.home-index-hero {
  position: relative;
  z-index: 2;
  padding: clamp(4.5rem, 7vw, 6.75rem) 0 clamp(4.5rem, 6vw, 6.5rem);
}

.commercial-hero-grid {
  display: block;
}

.commercial-hero-copy {
  max-width: 1080px;
  text-align: left;
}

.commercial-hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 1.35rem;
  color: var(--sky);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.commercial-hero-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  flex: 0 0 auto;
  background: currentColor;
  opacity: 0.75;
}

.commercial-hero-title {
  max-width: 1050px;
  margin: 0;
  color: oklch(96% 0.012 85);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.75rem, 5.6vw, 5.35rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.commercial-hero-title-accent {
  color: var(--sky);
  font-style: italic;
  font-weight: 400;
}

.commercial-hero-summary {
  max-width: 760px;
  margin: 1.65rem 0 0;
  color: #cbd5e1;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.65;
}

.commercial-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 2rem;
}

.commercial-hero-founder {
  display: flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  margin: 26px 0 0;
  color: #7f93a8;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.5;
}

.commercial-hero-founder::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sky);
}

/* Centred commercial hero variant */
.home-index-hero-centered .commercial-hero-copy {
  margin-inline: auto;
  text-align: center;
}

.home-index-hero-centered .commercial-hero-inner {
  padding: 2rem 1.5rem 3.5rem;
}

.home-index-hero-centered .commercial-hero-title,
.home-index-hero-centered .commercial-hero-summary {
  margin-inline: auto;
  text-wrap: balance;
}

.home-index-hero-centered .commercial-hero-actions {
  justify-content: center;
}

.home-index-hero-centered .commercial-hero-founder {
  margin-inline: auto;
}

.home-commercial .commercial-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: #090d16;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 6px;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.home-commercial .commercial-hero-primary:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.home-commercial .commercial-hero-secondary-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 4px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.32);
  color: #cbd5e1;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}

.home-commercial .commercial-hero-secondary-link span {
  color: #5eead4;
  transition: transform 160ms ease;
}

.home-commercial .commercial-hero-secondary-link:hover {
  border-color: #5eead4;
  color: #ffffff;
}

.home-commercial .commercial-hero-secondary-link:hover span {
  transform: translateY(2px);
}

.commercial-hero-secondary {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 6px;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.commercial-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.commercial-hero-specs {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.spec-metric {
  display: flex;
  flex-direction: column;
}

.spec-num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
  letter-spacing: -0.02em;
}

.spec-lbl {
  font-size: 0.725rem;
  color: #64748b;
  margin-top: 2px;
}

.spec-sep {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, 0.08);
}

/* ===========================================================================
   Book landing page

   The standalone book page shares the homepage chrome and editorial hero
   language, but keeps its product-specific artwork, curriculum, and pricing.
   Everything is scoped to .book-landing so these rules cannot affect the
   commercial homepage.
   ========================================================================== */

.book-landing main {
  position: relative;
  z-index: 2;
}

.book-landing .book-section {
  padding-block: clamp(4.5rem, 7vw, 6.75rem) clamp(3.5rem, 6vw, 5.5rem);
}

.book-landing .book-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.78fr);
  align-items: center;
  gap: clamp(2rem, 4vw, 4.5rem);
}

.book-landing .book-copy {
  max-width: 700px;
}

.book-landing .commercial-hero-title {
  font-size: clamp(3rem, 5.2vw, 5rem);
}

.book-landing .commercial-hero-summary {
  max-width: 620px;
}

.book-landing .book-guarantee {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 1.35rem 0 0;
  color: #7f93a8;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.book-landing .book-guarantee::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--sky);
}

.book-landing .book-cover-wrap {
  min-width: 0;
  display: grid;
  place-items: center start;
  position: relative;
}

.book-landing .book-cover-wrap::before {
  content: "";
  width: min(100%, 480px);
  aspect-ratio: 1;
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.2), rgba(111, 228, 218, 0.06) 45%, transparent 70%);
  filter: blur(12px);
}

.book-landing .book-render {
  --book-shift: -2rem;
  width: min(116%, 560px);
  display: block;
  position: relative;
  z-index: 1;
  filter: drop-shadow(-18px 30px 34px rgba(0, 0, 0, 0.32));
  transform: translateX(var(--book-shift)) rotate(-1.5deg);
  transition: transform 240ms ease, filter 240ms ease;
}

.book-landing .book-render img {
  width: 100%;
  height: auto;
  display: block;
}

.book-landing .book-cover-wrap:hover .book-render {
  filter: drop-shadow(-20px 36px 42px rgba(0, 0, 0, 0.36));
  transform: translateX(var(--book-shift)) translateY(-6px) rotate(0deg);
}

.book-landing .author-note {
  max-width: 760px;
  margin: clamp(2.5rem, 5vw, 4.25rem) auto 0;
  padding-top: 1.5rem;
  text-align: center;
  border-top: 1px solid rgba(177, 205, 213, 0.16);
}

.book-landing .author-note-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #91a4b4;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.book-landing .author-label {
  color: var(--sky);
}

.book-landing .author-name {
  color: #dce7e8;
}

.book-landing .author-note p {
  max-width: 70ch;
  margin: 0.75rem auto 0;
  color: #b7c5cd;
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: normal;
  line-height: 1.7;
  text-wrap: balance;
}

.book-landing .book-curriculum-section {
  color: var(--ink);
  background: var(--paper-cool);
  border-top: 4px solid var(--ink);
}

.book-landing .book-curriculum {
  padding-block: clamp(4.5rem, 8vw, 7rem);
}

.book-landing .book-curriculum-heading {
  max-width: 820px;
}

.book-landing .book-curriculum-heading h2,
.book-landing .pricing-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5vw, 4.75rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
  text-wrap: balance;
}

.book-landing .book-curriculum-heading > p,
.book-landing .pricing-heading > p:last-child {
  max-width: 64ch;
  margin: 1.25rem 0 0;
  color: var(--ink-soft);
  font-size: 1.03rem;
  line-height: 1.7;
}

.book-landing .curriculum-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.book-landing .curriculum-highlights li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--teal-dark);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.book-landing .curriculum-volume {
  max-width: 1040px;
  margin-top: clamp(3rem, 6vw, 5rem);
}

.book-landing .curriculum-volume + .curriculum-volume {
  margin-top: 2.5rem;
}

.book-landing .curriculum-volume-intro {
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #bec9c6;
}

.book-landing .curriculum-volume-intro h3 {
  margin: 0;
  color: var(--teal-dark);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.book-landing .book-curriculum-accordion {
  display: grid;
  gap: 0.75rem;
}

.book-landing .curriculum-part {
  overflow: clip;
  background: var(--paper-light);
  border: 1px solid #cfd8d5;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(16, 25, 35, 0.035);
}

.book-landing .curriculum-part[open] {
  border-color: rgba(19, 127, 113, 0.42);
}

.book-landing .curriculum-part summary {
  min-height: 88px;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.35rem;
  cursor: pointer;
  list-style: none;
}

.book-landing .curriculum-part summary::-webkit-details-marker {
  display: none;
}

.book-landing .curriculum-part summary:focus-visible {
  outline: 3px solid rgba(56, 189, 248, 0.55);
  outline-offset: -3px;
}

.book-landing .curriculum-part-number {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--teal-dark);
  background: rgba(19, 127, 113, 0.08);
  border: 1px solid rgba(19, 127, 113, 0.18);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.book-landing .curriculum-part-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.75rem;
}

.book-landing .curriculum-part-title {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.book-landing .curriculum-part-meta {
  color: #6c7a82;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
}

.book-landing .curriculum-part-chevron {
  color: var(--teal);
  transition: transform 180ms ease;
}

.book-landing .curriculum-part[open] .curriculum-part-chevron {
  transform: rotate(180deg);
}

.book-landing .curriculum-part-panel {
  padding: 0 1.35rem 1.5rem 5.75rem;
}

.book-landing .curriculum-part-outcome {
  max-width: 70ch;
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.65;
}

.book-landing .curriculum-chapter-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid #dbe2df;
  list-style: none;
}

.book-landing .curriculum-chapter-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid #dbe2df;
}

.book-landing .curriculum-chapter-number {
  padding-top: 0.15rem;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 700;
}

.book-landing .curriculum-chapter-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.65rem;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 700;
}

.book-landing .curriculum-chapter-heading a {
  color: var(--teal-dark);
  text-decoration: underline;
  text-decoration-color: rgba(12, 87, 78, 0.28);
  text-underline-offset: 3px;
}

.book-landing .curriculum-chapter-copy p {
  margin: 0.35rem 0 0;
  color: #53616a;
  font-size: 0.87rem;
  line-height: 1.55;
}

.book-landing .curriculum-badge {
  padding: 0.18rem 0.45rem;
  color: #59666d;
  background: #edf0ed;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.57rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.book-landing .curriculum-badge-free {
  color: #075e52;
  background: #d9efea;
}

.book-landing .pricing-section {
  padding-block: clamp(4.75rem, 8vw, 7rem);
  color: #edf5f5;
  background: var(--night-900);
  border-top: 1px solid rgba(177, 205, 213, 0.16);
}

.book-landing .pricing-heading {
  max-width: 820px;
}

.book-landing .pricing-heading .eyebrow {
  margin: 0 0 1rem;
  color: var(--sky);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.book-landing .pricing-heading > p:last-child {
  color: #9fb0bd;
}

.book-landing .pricing-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.book-landing .pricing-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: clamp(1.6rem, 3.5vw, 2.5rem);
  color: var(--ink);
  background: var(--paper-light);
  border: 1px solid #d6ddda;
  border-radius: 10px;
}

.book-landing .pricing-card-complete {
  color: #edf5f5;
  background: #102733;
  border-color: rgba(111, 228, 218, 0.28);
}

.book-landing .pricing-card-topline {
  min-height: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.book-landing .pricing-label,
.book-landing .pricing-badge {
  color: var(--teal-dark);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-landing .pricing-card-complete .pricing-label {
  color: #9fb0bd;
}

.book-landing .pricing-badge {
  padding: 0.3rem 0.55rem;
  color: #052f2a;
  background: var(--cyan);
  border-radius: 999px;
}

.book-landing .pricing-card h3 {
  margin: 1.2rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.2vw, 2.85rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
}

.book-landing .pricing-part-subtitle,
.book-landing .pricing-deck {
  margin: 0.75rem 0 0;
  color: #66757d;
  line-height: 1.6;
}

.book-landing .pricing-card-complete .pricing-deck {
  color: #9fb0bd;
}

.book-landing .part-selector {
  margin: 1.5rem 0 0;
  padding: 0;
  border: 0;
}

.book-landing .part-selector legend {
  margin-bottom: 0.55rem;
  color: #66757d;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-landing .part-selector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.book-landing .part-choice {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  padding: 0.8rem;
  border: 1px solid #cfd8d5;
  border-radius: 7px;
  cursor: pointer;
}

.book-landing .part-choice:focus-within,
.book-landing .part-choice.is-selected {
  border-color: var(--teal);
  box-shadow: inset 0 0 0 1px var(--teal);
}

.book-landing .part-choice input {
  position: absolute;
  opacity: 0;
}

.book-landing .part-choice-radio {
  width: 16px;
  height: 16px;
  display: block;
  border: 1px solid #8c9a9f;
  border-radius: 50%;
}

.book-landing .part-choice.is-selected .part-choice-radio {
  border: 5px solid var(--teal);
}

.book-landing .part-choice-copy {
  display: grid;
  gap: 0.1rem;
}

.book-landing .part-choice-copy strong {
  font-size: 0.83rem;
}

.book-landing .part-choice-copy small {
  color: #708087;
  font-size: 0.68rem;
}

.book-landing .pricing-price-row {
  display: flex;
  align-items: flex-end;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.book-landing .pricing-price {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 6vw, 5.25rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.85;
}

.book-landing .pricing-price-meta {
  color: #708087;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1.45;
  text-transform: uppercase;
}

.book-landing .pricing-card-complete .pricing-price-meta {
  color: #91a4b4;
}

.book-landing .pricing-card > .button {
  width: 100%;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.7rem;
  color: #071018 !important;
  background: var(--sky);
  border-color: var(--sky);
}

.book-landing .pricing-card > .button:hover {
  background: #6fd4ff;
  border-color: #6fd4ff;
}

.book-landing .pricing-includes {
  display: grid;
  gap: 0.85rem;
  margin: 1.6rem 0 0;
  padding: 1.4rem 0 0;
  border-top: 1px solid #d6ddda;
  list-style: none;
}

.book-landing .pricing-card-complete .pricing-includes {
  border-color: rgba(177, 205, 213, 0.16);
}

.book-landing .pricing-includes li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 0.55rem;
  font-size: 0.84rem;
  line-height: 1.55;
}

.book-landing .pricing-card-complete .pricing-includes li {
  color: #c4d2d6;
}

.book-landing .pricing-check {
  color: var(--teal);
  font-weight: 800;
}

.book-landing .pricing-card-complete .pricing-check {
  color: var(--cyan);
}

.book-landing .pricing-footnote {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem 1.8rem;
  margin-top: 1.75rem;
  color: #7f93a8;
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.book-landing .pricing-footnote span::before {
  content: "/";
  margin-right: 0.55rem;
  color: var(--cyan);
  font-weight: 700;
}

@media (max-width: 920px) {
  .book-landing .book-grid,
  .book-landing .pricing-grid {
    grid-template-columns: 1fr;
  }

  .book-landing .book-cover-wrap {
    width: min(100%, 560px);
    margin-inline: auto;
    place-items: center;
  }

  .book-landing .book-render {
    --book-shift: 0;
    width: min(100%, 520px);
  }
}

@media (max-width: 560px) {
  .book-landing .book-section {
    padding-block: 3.75rem 3.5rem;
  }

  .book-landing .book-grid {
    gap: 2.8rem;
  }

  .book-landing .book-actions a {
    width: 100%;
    justify-content: center;
  }

  .book-landing .author-note {
    text-align: left;
  }

  .book-landing .author-note p {
    text-wrap: initial;
  }

  .book-landing .curriculum-highlights,
  .book-landing .pricing-footnote {
    align-items: flex-start;
    flex-direction: column;
  }

  .book-landing .curriculum-volume + .curriculum-volume {
    margin-top: 2.25rem;
  }

  .book-landing .curriculum-part summary {
    min-height: 76px;
    grid-template-columns: 42px minmax(0, 1fr) 20px;
    gap: 0.75rem;
    padding: 1rem;
  }

  .book-landing .curriculum-part-number {
    width: 38px;
    height: 38px;
  }

  .book-landing .curriculum-part-panel {
    padding: 0 1rem 1.25rem;
  }

  .book-landing .curriculum-part-outcome {
    padding-left: 0;
  }

  .book-landing .part-selector-grid {
    grid-template-columns: 1fr;
  }

  .book-landing .pricing-card-topline {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* Animations */

.reveal {
  animation: hero-reveal 700ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.delay-1 { animation-delay: 90ms; }
.delay-2 { animation-delay: 180ms; }
.delay-3 { animation-delay: 270ms; }

@keyframes hero-reveal {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================================================================
   Operational Comparison / Fit Section
   ========================================================================== */

.integration-fit-section {
  scroll-margin-top: 84px;
  padding-block: clamp(64px, 8vw, 108px);
  background: var(--paper-light);
  border-top: 4px solid var(--ink);
}

.integration-fit-header {
  max-width: 820px;
}

.integration-fit-header h2 {
  margin: 12px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.2vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

.integration-fit-lead {
  margin: 20px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  line-height: 1.65;
  text-wrap: pretty;
}

.comparison-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 3.5vw, 40px);
  margin-top: clamp(40px, 5vw, 64px);
}

.comp-card {
  display: flex;
  flex-direction: column;
  padding: clamp(28px, 3.5vw, 44px);
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 36px rgba(16, 25, 35, 0.04);
}

.comp-card-top {
  display: flex;
  flex-direction: column;
}

.comp-card-standard {
  border-top: 5px solid #94a3b8;
}

.comp-card-custom {
  background: var(--paper-cool);
  border: 1px solid #c2d5d1;
  border-top: 5px solid var(--teal);
  box-shadow: 0 16px 40px rgba(19, 127, 113, 0.08);
}

.comp-pill {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 4px;
}

.comp-pill-standard {
  color: #475569;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
}

.comp-pill-custom {
  color: var(--teal-dark);
  background: #daf1ed;
  border: 1px solid #a8ddd5;
}

.comp-card-title {
  margin: 18px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.4vw, 2.2rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.comp-card-summary {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.6;
}

.comp-card-traits {
  display: grid;
  gap: 20px;
  margin: 32px 0 0;
  padding: 28px 0 0 0;
  list-style: none;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

ul.comp-card-traits {
  padding-left: 0 !important;
  margin-left: 0 !important;
}

@media (min-width: 861px) {
  .comparison-cards {
    grid-template-rows: max-content max-content;
  }

  .comp-card {
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 2;
  }

  .comp-card-traits {
    margin-top: 0;
  }
}

.comp-card-traits li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.trait-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
  margin-top: 1px;
  padding-left: 4px;
}

.traits-standard .trait-icon {
  color: #64748b;
  background: #f1f5f9;
  padding-bottom: 1px;
}

.traits-custom .trait-icon {
  color: var(--teal-dark);
  background: #bfe5de;
  padding-bottom: 2px;
}

.comp-card-traits strong {
  display: block;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 24px;
}

.comp-card-traits span {
  display: block;
  margin-top: 3px;
  color: #55636e;
  font-size: 0.86rem;
  line-height: 1.55;
}

.integration-fit-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: clamp(36px, 5vw, 56px);
  padding: 28px 32px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.integration-fit-footer p {
  max-width: 680px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.6;
}

.integration-fit-footer strong {
  color: var(--ink);
}

/* ===========================================================================
   Flagship Pilot
   ========================================================================== */

.main-content {
  background: var(--paper);
}

.flagship-section {
  padding-block: clamp(92px, 10vw, 148px);
  border-top: 4px solid var(--ink);
  background: var(--paper-light);
}

.flagship-heading {
  max-width: 780px;
}

.flagship-heading h2 {
  margin-top: 0;
}

.pilot-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr);
  align-items: start;
  margin-top: clamp(52px, 6vw, 76px);
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.pilot-scope {
  min-width: 0;
  padding: 36px clamp(32px, 4vw, 54px) 42px 0;
}

.pilot-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.pilot-title-row h3 {
  max-width: 680px;
  margin: 20px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.1vw, 3.35rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pilot-intro {
  max-width: 790px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.scope-register-heading {
  margin-top: 34px;
}

.scope-register-heading h4 {
  margin: 8px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.2vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.scope-register-heading p {
  max-width: 790px;
  margin: 18px 0 40px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
}

.scope-register {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(36px, 5vw, 72px);
  margin: 22px 0 0;
  border-top: 1px solid var(--line);
}

.scope-row {
  padding: 25px 0 28px;
  border-bottom: 1px solid var(--line);
}

.scope-row:last-child {
  border-bottom: 0;
}

@media (min-width: 941px) {
  .scope-row:nth-last-child(2) {
    border-bottom: 0;
  }
}

.scope-row dt {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 750;
  line-height: 1.35;
}

.scope-row dt span {
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}

.scope-row dd {
  max-width: 60ch;
  margin: 8px 0 0 48px;
  color: #56616a;
  font-size: 0.92rem;
  line-height: 1.62;
}

/* --- Redesigned Pilot Card & Sidebar --- */

.pilot-terms {
  align-self: start;
  min-width: 0;
  padding: 38px 32px;
  color: #f1f8f6;
  background: var(--teal-dark);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(12, 87, 78, 0.16);
}

.pilot-terms .mono-label {
  color: #a7f3d0;
  letter-spacing: 0.14em;
}

.pilot-price {
  margin: 24px 0 0;
  color: #ffffff;
  font-family: var(--font-display);
  font-size: clamp(3.25rem, 5vw, 4.4rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.9;
  white-space: nowrap;
}

.pilot-price > span {
  font-size: 0.5em;
  vertical-align: top;
}

.pilot-price small {
  display: block;
  margin: 10px 0 0 4px;
  color: #99f6e4;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pilot-duration {
  margin: 20px 0 0;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
}

/* High-visibility assessment callout */
.pilot-credit-callout {
  margin: 20px 0 24px;
  padding: 16px 18px;
  background: rgba(0, 0, 0, 0.22);
  border-radius: 6px;
}

.credit-callout-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.credit-badge {
  color: #5eead4;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.credit-callout-head strong {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.pilot-credit-callout p {
  margin: 8px 0 0;
  color: #d1fae5;
  font-size: 0.8rem;
  line-height: 1.5;
}

/* Deliverables register */
.pilot-scope-label {
  margin: 0;
  color: #99f6e4;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pilot-deliverables {
  display: grid;
  gap: 12px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.pilot-deliverables li {
  position: relative;
  padding-left: 18px;
  color: #f1f8f6;
  font-size: 0.86rem;
  line-height: 1.45;
}

.pilot-deliverables li::before {
  content: "/";
  position: absolute;
  left: 0;
  color: var(--cyan-bright);
  font-family: var(--font-mono);
  font-weight: 700;
}

.pilot-actions {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid rgba(210, 238, 234, 0.17);
}

.pilot-actions .button {
  width: 100%;
  justify-content: space-between;
  font-size: 0.84rem;
}

.pilot-secondary-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 14px;
  color: #acd5ce !important;
  font-size: 0.76rem;
  font-weight: 650;
}

.pilot-secondary-link:hover {
  color: #fff !important;
}

/* ===========================================================================
   Specialist Capabilities
   ========================================================================== */

.capabilities-section {
  padding-block: clamp(88px, 9vw, 132px);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.capability-register {
  margin-top: clamp(48px, 6vw, 70px);
  border-top: 2px solid var(--ink);
}

.capability-row {
  display: grid;
  grid-template-columns: 54px minmax(210px, 0.72fr) minmax(340px, 1.25fr) 150px;
  gap: 24px clamp(26px, 4vw, 58px);
  align-items: start;
  padding: 28px 8px 31px;
  border-bottom: 1px solid var(--line);
}

.capability-id,
.capability-status {
  padding-top: 5px;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.capability-row h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.capability-row p {
  max-width: 58ch;
  margin: 0;
  color: #52606a;
  font-size: 0.88rem;
  line-height: 1.7;
}

.capability-status {
  color: #66766f;
  text-align: right;
}

/* ===========================================================================
   Commercial Framework and Contact
   ========================================================================== */

.commercial-section {
  padding-block: clamp(88px, 9vw, 136px);
  color: #d8e4e6;
  background:
    radial-gradient(circle at 86% 18%, rgba(25, 131, 120, 0.18), transparent 28%),
    var(--night-950);
}

.commercial-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.72fr);
  gap: clamp(58px, 8vw, 118px);
  align-items: start;
}

.commercial-heading .section-kicker {
  color: var(--cyan);
}

.commercial-heading h2 {
  max-width: 720px;
  color: #f3f7f6;
}

.commercial-heading > p:last-child {
  max-width: 650px;
  margin: 23px 0 0;
  color: #93a8b0;
  font-size: 1rem;
  line-height: 1.7;
}

.engagement-steps {
  margin: 48px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.engagement-steps > li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 22px;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--line-dark);
}

.step-number {
  padding-top: 5px;
  color: var(--sky);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
}

.engagement-steps h3 {
  margin: 0;
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.1vw, 1.8rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.engagement-steps p {
  max-width: 680px;
  margin: 12px 0 0;
  color: #91a5ad;
  font-size: 0.95rem;
  line-height: 1.68;
}

.engagement-steps .step-meta {
  margin-top: 8px;
  color: var(--sky);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.step-meta i {
  margin-inline: 5px;
  color: #51707b;
  font-style: normal;
}

.engagement-steps .step-note {
  margin-top: 14px;
  padding-left: 15px;
  border-left: 2px solid var(--sky);
  color: #c6d3d4;
  font-size: 0.78rem;
}

.enquiry-panel {
  padding: clamp(27px, 3.5vw, 42px);
  color: var(--ink);
  border-radius: 8px;
  background: #f8f7f2;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.28);
  scroll-margin-top: 96px;
}

.enquiry-panel-head .mono-label {
  color: var(--teal);
}

.enquiry-panel-head h2 {
  margin: 13px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 3.5vw, 3.35rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.enquiry-panel-head > p:last-child {
  margin: 18px 0 0;
  color: #58636a;
  font-size: 0.86rem;
  line-height: 1.65;
}

.enquiry-form {
  display: grid;
  gap: 19px;
  margin-top: 28px;
}

.form-trap {
  display: none;
}

.form-field {
  min-width: 0;
}

.form-field label {
  display: block;
  margin-bottom: 7px;
  color: #1b252d;
  font-size: 0.76rem;
  font-weight: 750;
}

.form-field label span {
  color: #788188;
  font-weight: 500;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 13px;
  color: var(--ink);
  border: 1px solid #bbc2c0;
  border-radius: 0;
  background: #fff;
  font-size: 0.92rem;
  line-height: 1.45;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.form-field textarea {
  min-height: 150px;
  resize: vertical;
}

.form-field input:hover,
.form-field textarea:hover {
  border-color: #889a96;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.16);
}

.field-hint {
  margin: -1px 0 8px;
  color: #737d82;
  font-size: 0.69rem;
  line-height: 1.5;
}

.form-security {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  color: #68747a;
  font-size: 0.68rem;
  line-height: 1.5;
}

.form-security svg {
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--teal);
}

.enquiry-submit {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  color: #fff;
  border: 0;
  background: var(--teal-dark);
  cursor: pointer;
  font-size: 0.83rem;
  font-weight: 750;
  transition: background-color 150ms ease, transform 150ms ease;
}

.enquiry-submit:hover {
  background: #09443e;
  transform: translateY(-1px);
}

.enquiry-email {
  margin: 22px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: #69757a;
  font-size: 0.72rem;
}

.enquiry-email a {
  color: var(--teal-dark) !important;
  font-weight: 750;
}

/* ===========================================================================
   Public Proof
   ========================================================================== */

.proof-section {
  padding-block: clamp(86px, 9vw, 128px);
  color: var(--ink);
  background: var(--paper-cool);
}

.proof-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(420px, 1fr);
  gap: clamp(60px, 9vw, 128px);
  align-items: start;
}

.proof-copy h2 {
  font-size: clamp(2.45rem, 4.2vw, 4rem);
}

.proof-copy > p:last-child {
  max-width: 52ch;
  margin: 22px 0 0;
  color: #506069;
  font-size: 0.92rem;
  line-height: 1.72;
}

.proof-links {
  border-top: 2px solid var(--ink);
}

.proof-links a {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 7px 15px;
  padding: 22px 2px 24px;
  border-bottom: 1px solid #bdc9c4;
  transition: padding-left 150ms ease, background-color 150ms ease;
}

.proof-links a:hover {
  padding-left: 9px;
  background: rgba(255, 255, 255, 0.36);
}

.proof-links span {
  grid-row: 1 / span 2;
  padding-top: 4px;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.proof-links strong {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.proof-links small {
  color: #607078;
  font-size: 0.72rem;
  line-height: 1.5;
}

/* ===========================================================================
   FAQ
   ========================================================================== */

.faq-section {
  padding-block: clamp(82px, 9vw, 126px);
  background: var(--paper-light);
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1fr);
  gap: clamp(56px, 9vw, 126px);
  align-items: start;
}

.faq-section h2 {
  max-width: 520px;
  font-size: clamp(2.4rem, 4vw, 3.8rem);
}

.faq-list {
  border-top: 2px solid var(--ink);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 24px 42px 24px 0;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 750;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 20px;
  right: 4px;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 500;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  max-width: 68ch;
  margin: -3px 42px 24px 0;
  color: #526069;
  font-size: 0.86rem;
  line-height: 1.7;
}

/* ===========================================================================
   Footer
   ========================================================================== */

.site-footer {
  color: #98a9b2;
  background: var(--night-1000);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 50px;
  padding-block: 64px 54px;
}

.footer-brand p {
  max-width: 360px;
  margin: 18px 0 0;
  color: #71858f;
  font-size: 0.82rem;
  line-height: 1.65;
}

.footer-col h3 {
  margin: 0 0 15px;
  color: #dce7e8;
  font-family: var(--font-mono);
  font-size: 0.61rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  margin-top: 9px;
  color: #81949e;
  font-size: 0.8rem;
}

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

.footer-bottom {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid #18252e;
  color: #5e737d;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ===========================================================================
   Responsive Overrides
   ========================================================================== */

@media (max-width: 1120px) {
  .desktop-nav,
  .nav-actions > .button {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .capability-row {
    grid-template-columns: 44px minmax(190px, 0.72fr) minmax(300px, 1.15fr);
  }

  .capability-status {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 960px) {
  .commercial-hero-summary {
    max-width: 100%;
  }
}

@media (max-width: 940px) {
  .section-heading-split,
  .pilot-layout,
  .commercial-grid,
  .proof-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .section-heading-split {
    gap: 28px;
  }

  .section-heading-split > p {
    max-width: 66ch;
  }

  .pilot-scope {
    padding-right: 0;
  }

  .scope-register {
    grid-template-columns: 1fr;
  }

  .pilot-terms {
    display: block;
  }

  .commercial-grid {
    gap: 72px;
  }

  .enquiry-panel {
    width: min(100%, 680px);
  }

  .proof-grid,
  .faq-grid {
    gap: 46px;
  }

  .proof-copy > p:last-child {
    max-width: 66ch;
  }
}

@media (max-width: 860px) {
  .comparison-cards {
    grid-template-columns: 1fr;
  }

  .integration-fit-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .capability-row {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px 15px;
  }

  .capability-row h3,
  .capability-row p,
  .capability-status {
    grid-column: 2;
  }

  .capability-id {
    grid-column: 1;
    grid-row: 1;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 24px;
    padding-block: 52px 42px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  :root {
    --page-gutter: 18px;
  }

  html {
    scroll-padding-top: 76px;
  }

  .nav-row {
    min-height: 68px;
  }

  .mobile-nav {
    top: 68px;
  }

  .section-heading h2,
  .commercial-heading h2,
  .proof-copy h2,
  .faq-section h2 {
    font-size: clamp(2.55rem, 12.5vw, 3.4rem);
    line-height: 0.99;
  }

  .flagship-section,
  .capabilities-section,
  .commercial-section,
  .proof-section,
  .faq-section {
    padding-block: 72px;
  }

  .integration-fit-section {
    scroll-margin-top: 76px;
    padding-block: 56px;
  }

  .pilot-layout {
    margin-top: 42px;
  }

  .pilot-title-row {
    align-items: flex-start;
    flex-direction: column-reverse;
    gap: 18px;
  }

  .pilot-title-row h3 {
    font-size: 2.45rem;
  }

  .pilot-scope {
    padding-block: 28px 34px;
  }

  .scope-row {
    padding-block: 20px;
  }

  .scope-row dt {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 11px;
  }

  .scope-row dd {
    margin-left: 41px;
  }

  .pilot-terms {
    display: block;
    padding: 30px 24px;
  }

  .capability-register {
    margin-top: 40px;
  }

  .capability-row {
    padding-block: 23px 25px;
  }

  .commercial-grid {
    gap: 58px;
  }

  .engagement-steps {
    margin-top: 40px;
  }

  .engagement-steps > li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 13px;
    padding-block: 25px 27px;
  }

  .engagement-steps h3 {
    font-size: 1.58rem;
  }

  .engagement-steps .step-meta {
    line-height: 1.65;
  }

  .enquiry-panel {
    width: 100%;
    padding: 27px 20px;
  }

  .enquiry-panel-head h2 {
    font-size: 2.7rem;
  }

  .faq-list summary {
    padding-right: 34px;
  }

  .footer-grid {
    gap: 28px 18px;
  }

  .footer-col {
    min-width: 0;
  }

  .footer-col a {
    overflow-wrap: anywhere;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding-block: 18px;
  }
}

@media (max-width: 560px) {
  .nav-actions {
    gap: 10px;
  }

  .nav-actions > .sign-in {
    display: none;
  }

  .home-index-hero {
    padding-block: 3.75rem 5rem;
  }

  .commercial-hero-title {
    font-size: clamp(2.7rem, 12vw, 3.55rem);
    line-height: 1.01;
  }

  .hero-title-break {
    display: none;
  }

  .commercial-hero-summary {
    margin-top: 1.4rem;
  }

  .commercial-hero-actions {
    align-items: stretch;
    flex-direction: column;
    margin-top: 1.75rem;
  }

  .commercial-hero-primary,
  .commercial-hero-secondary,
  .commercial-hero-secondary-link {
    justify-content: center;
    min-height: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    animation: none;
  }

  .book-landing .book-render {
    transition: none;
  }

  .book-landing .book-cover-wrap:hover .book-render {
    transform: translateX(var(--book-shift)) rotate(-1.5deg);
  }

  .button,
  .text-link span,
  .enquiry-submit,
  .proof-links a {
    transition: none;
  }

  .button:hover,
  .enquiry-submit:hover,
  .text-link:hover span {
    transform: none;
  }
}

.hero-trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 2rem;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: #94a3b8;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.hero-trust-badge .badge-dot {
  color: var(--sky);
  font-size: 0.8rem;
}