/* =================================================================
   Global Vertex — site styles
   HTML = structure | CSS = presentation | JS = behaviour
   ================================================================= */

:root {
  --color-primary-navy: #12304a;
  --color-primary-blue: #1769aa;
  --color-accent-teal: #1f6b6b;
  --color-text: #25313c;
  --color-text-secondary: #5f6b76;
  --color-bg-light: #f4f6f8;
  --color-white: #ffffff;
  --color-border: #dce4ea;
  --color-bg-navy-soft: color-mix(in srgb, var(--color-primary-navy) 8%, var(--color-white));
  --color-error: #8a3030;

  --font-sans: Inter, system-ui, sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;
  --max-width: 1180px;
  --header-height: 4.5rem;
  --radius: 2px;
  --focus-ring: 2px solid var(--color-primary-blue);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: clip;
}

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

h1,
h2,
h3,
p,
ul,
figure,
blockquote {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

a {
  color: var(--color-primary-navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-primary-blue);
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
}

.btn-primary:focus-visible,
.skip-link:focus,
.skip-link:focus-visible,
.site-footer a:focus-visible,
.nav-overlay:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 3px;
}

.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;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 200;
  padding: 0.55rem 0.85rem;
  background: var(--color-primary-navy);
  color: var(--color-white);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 0.75rem;
  color: var(--color-white);
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3.25rem, 7vw, 5.5rem);
}

.section--muted {
  background: var(--color-bg-light);
}

.section__intro {
  max-width: 40rem;
  margin-bottom: 2.75rem;
}

.section__intro h2 + p {
  margin-top: 0.9rem;
  color: var(--color-text-secondary);
}

.lede {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 38rem;
}

h1,
h2,
h3,
.statement__text {
  overflow-wrap: break-word;
}

h1,
h2,
.statement__text {
  font-family: var(--font-serif);
  color: var(--color-primary-navy);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.05rem);
  font-weight: 600;
}

h2 {
  font-size: clamp(1.45rem, 2.4vw, 1.95rem);
  font-weight: 600;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary-navy);
  letter-spacing: -0.01em;
}

.page-kicker {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent-teal);
  margin-bottom: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: 0.65rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--color-primary-navy);
  color: var(--color-white);
  border-color: var(--color-primary-navy);
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--color-primary-navy) 86%, black);
  color: var(--color-white);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary-navy);
  border-color: var(--color-primary-navy);
}

.btn-secondary:hover {
  background: var(--color-bg-light);
  color: var(--color-primary-navy);
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.text-link {
  display: inline-flex;
  margin-top: auto;
  padding-top: 1.1rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--color-primary-navy);
}

.text-link:hover {
  color: var(--color-accent-teal);
}

.card-grid {
  display: grid;
  gap: 1.15rem;
}

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 1.6rem 1.45rem;
}

.card__number {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-accent-teal);
  margin-bottom: 0.85rem;
}

.card__title {
  margin-bottom: 0.55rem;
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.98rem;
}

.card--service {
  display: flex;
  flex-direction: column;
}

.card__icon {
  color: var(--color-primary-navy);
  margin-bottom: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1rem;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--color-primary-navy);
}

.site-logo:hover {
  color: var(--color-primary-navy);
}

.site-logo img {
  width: 1.55rem;
  height: 1.55rem;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.site-logo__name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.site-logo__tag {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.site-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
}

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

.site-nav a[aria-current="page"] {
  font-weight: 600;
}

.site-nav .btn-primary {
  color: var(--color-white);
  font-weight: 600;
}

.site-nav .btn-primary:hover {
  color: var(--color-white);
}

.menu-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  cursor: pointer;
}

.menu-button:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.menu-button__bars,
.menu-button__bars::before,
.menu-button__bars::after {
  display: block;
  width: 1.05rem;
  height: 1.5px;
  background: var(--color-primary-navy);
  position: relative;
}

.menu-button__bars::before,
.menu-button__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-button__bars::before {
  top: -5px;
}

.menu-button__bars::after {
  top: 5px;
}

.menu-button[aria-expanded="true"] .menu-button__bars {
  background: transparent;
}

.menu-button[aria-expanded="true"] .menu-button__bars::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-button__bars::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  z-index: 90;
  margin: 0;
  padding: 0;
  border: 0;
  background: color-mix(in srgb, var(--color-primary-navy) 22%, transparent);
  cursor: pointer;
}

.nav-overlay.is-visible {
  display: block;
}

@media (max-width: 1023px) {
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 101;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1.25rem 1.4rem;
    max-height: calc(100dvh - var(--header-height));
    overflow-y: auto;
  }

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

  .site-nav__list a {
    display: block;
    padding: 0.8rem 0.2rem;
    min-height: 2.75rem;
  }

  .site-nav__cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 0.85rem;
    width: 100%;
    min-height: 2.85rem;
  }

  body.nav-open {
    overflow: hidden;
  }
}

.hero {
  padding-block: clamp(2.75rem, 6vw, 4.75rem);
}

.hero__grid,
.page-hero__grid {
  display: grid;
  gap: 2rem;
}

.hero__grid > *,
.page-hero__grid > *,
.split-block > *,
.card,
.pillar {
  min-width: 0;
}

:target,
.service-chapter,
.reality {
  scroll-margin-top: calc(var(--header-height) + 0.85rem);
}

.hero__copy .lede,
.page-hero .lede {
  margin-top: 1.1rem;
}

.media-frame {
  background: var(--color-bg-light);
}

.media-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.media-frame--photo {
  overflow: hidden;
}

.media-frame--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  aspect-ratio: 4 / 3;
}

.pillar-list {
  display: grid;
  gap: 0;
  margin-top: 0.5rem;
  border-top: 1px solid var(--color-border);
}

.pillar {
  padding: 1.45rem 0;
  border-bottom: 1px solid var(--color-border);
}

.pillar__number {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-accent-teal);
  margin-bottom: 0.55rem;
}

.pillar h3 {
  margin-bottom: 0.4rem;
}

.pillar p {
  color: var(--color-text-secondary);
  font-size: 0.98rem;
}

.editorial-points {
  margin-top: 2.75rem;
}

.editorial-points article {
  padding: 1.45rem 0;
  border-top: 1px solid var(--color-border);
}

.editorial-points article:last-child {
  border-bottom: 1px solid var(--color-border);
}

.editorial-points h3 {
  font-family: var(--font-serif);
  font-size: 1.28rem;
  font-weight: 600;
}

.editorial-points p {
  margin-top: 0.35rem;
  color: var(--color-text-secondary);
}

.prose {
  max-width: 42rem;
}

.prose p + p {
  margin-top: 1rem;
}

.prose h2 {
  margin-top: 2.25rem;
  margin-bottom: 0.8rem;
}

.prose .lede + p,
.prose h1 + p {
  margin-top: 1rem;
}

.split-block {
  display: grid;
  gap: 2rem;
}

.split-block .lede {
  margin-top: 1rem;
}

.service-chapter {
  display: grid;
  gap: 1.5rem;
  padding-block: 2.75rem;
  border-top: 1px solid var(--color-border);
}

.service-chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.reality {
  display: grid;
  gap: 0.45rem;
  padding-block: 1.35rem;
  border-top: 1px solid var(--color-border);
}

.reality:first-child {
  border-top: 0;
  padding-top: 0;
}

.reality h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
}

.audience-list {
  display: grid;
  gap: 0.75rem;
}

.audience-list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.audience-list strong {
  display: block;
  color: var(--color-primary-navy);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.diff__intro {
  display: grid;
  gap: 1.5rem;
}

.diff__copy p {
  color: var(--color-text-secondary);
}

.diff__copy p + p {
  margin-top: 1rem;
}

.diff__concepts {
  display: grid;
  gap: 1.75rem;
  margin-top: 2.75rem;
}

.concept {
  padding-top: 1rem;
  border-top: 2px solid var(--color-accent-teal);
}

.concept p {
  margin-top: 0.45rem;
  color: var(--color-text-secondary);
}

.diff__continue {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.15rem;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-border);
}

.diff__continue h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
}

.statement {
  background: var(--color-primary-navy);
  color: var(--color-white);
  padding-block: clamp(3.75rem, 9vw, 6.25rem);
}

.statement__text {
  max-width: 16ch;
  font-size: clamp(1.7rem, 3.4vw, 2.55rem);
  font-weight: 600;
  font-style: normal;
  color: var(--color-white);
  line-height: 1.25;
  quotes: none;
}

.cta__inner {
  text-align: center;
  max-width: 36rem;
  margin-inline: auto;
}

.cta__inner .lede {
  margin: 0.9rem auto 1.6rem;
}

.site-footer {
  background: var(--color-primary-navy);
  color: color-mix(in srgb, var(--color-white) 78%, var(--color-primary-navy));
  padding-block: 3.25rem 1.75rem;
}

.footer__top {
  display: grid;
  gap: 2rem;
}

.footer__name {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.7rem;
}

.footer__name img {
  width: 1.2rem;
  height: 1.2rem;
  filter: brightness(0) invert(1);
}

.footer__tagline {
  color: color-mix(in srgb, var(--color-white) 72%, var(--color-primary-navy));
  font-size: 0.95rem;
}

.footer__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 0.55rem;
}

.footer__nav {
  display: grid;
  gap: 0.5rem;
}

.site-footer a {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
}

.site-footer a:hover {
  color: color-mix(in srgb, var(--color-white) 80%, var(--color-accent-teal));
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2.4rem;
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--color-white) 16%, var(--color-primary-navy));
  font-size: 0.88rem;
}

.contact-layout {
  display: grid;
  gap: 2.5rem;
}

.form {
  display: grid;
  gap: 1rem;
  max-width: 28rem;
  width: 100%;
}

.form-legend {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.required-mark {
  color: var(--color-error);
  font-weight: 600;
}

.form-field label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-primary-navy);
  margin-bottom: 0.35rem;
}

.form-field input,
.form-field textarea {
  width: 100%;
  max-width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
}

.form-field textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.form-field.is-invalid input,
.form-field.is-invalid textarea {
  border-color: var(--color-error);
}

.form-field input:focus-visible,
.form-field textarea:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

.field-error {
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: var(--color-error);
}

.field-error:empty {
  display: none;
}

.form-actions {
  display: grid;
  gap: 0.85rem;
}

.form-actions .btn {
  width: 100%;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.form-status {
  margin: 0;
  padding: 0.9rem 1rem;
  background: var(--color-bg-light);
  border-left: 3px solid var(--color-primary-navy);
}

.form-status--notice {
  border-left-color: var(--color-primary-navy);
}

.form-status--error {
  border-left-color: var(--color-error);
  background: color-mix(in srgb, var(--color-error) 8%, var(--color-white));
}

.form-status--success {
  border-left-color: var(--color-accent-teal);
}

.form-hint {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}

.contact-location {
  margin-top: 1.35rem;
}

.contact-location + p {
  margin-top: 0.45rem;
}

.contact-location + p + .form-hint {
  margin-top: 0.75rem;
}

.footer__contact p + p {
  margin-top: 0.35rem;
}

.footer__contact a {
  overflow-wrap: anywhere;
}

@media (min-width: 640px) {
  .btn-row {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (min-width: 768px) {
  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .editorial-points article {
    display: grid;
    grid-template-columns: minmax(12rem, 20rem) 1fr;
    gap: 2.5rem;
    align-items: baseline;
    padding-block: 1.7rem;
  }

  .editorial-points p {
    margin-top: 0;
  }

  .diff__continue {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
  }

  .diff__continue .btn {
    flex-shrink: 0;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: end;
  }

  .service-chapter {
    grid-template-columns: 7rem 1fr;
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.75rem;
    align-items: stretch;
  }

  .page-hero__grid,
  .split-block {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.75rem;
    align-items: center;
  }

  .media-frame--photo img {
    aspect-ratio: auto;
    min-height: 28rem;
  }

  .pillar-list {
    grid-template-columns: repeat(4, 1fr);
    border-top: 0;
  }

  .pillar {
    padding: 0 1.65rem 0 0;
    border-bottom: 0;
    border-right: 1px solid var(--color-border);
  }

  .pillar:last-child {
    padding-right: 0;
    border-right: 0;
  }

  .pillar:not(:first-child) {
    padding-left: 1.65rem;
  }

  .contact-layout {
    grid-template-columns: minmax(0, 1fr) minmax(16rem, 28rem);
    gap: 4.5rem;
    align-items: start;
    max-width: 52rem;
  }

  .diff__intro {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
  }

  .section--editorial .diff__intro h2 {
    max-width: 14ch;
  }

  .footer__top {
    grid-template-columns: 1.5fr 1fr 0.8fr;
    gap: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .menu-button {
    display: none;
  }

  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }

  .site-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 1 1 auto;
    min-width: 0;
    gap: 1.25rem;
  }

  .site-nav__list {
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: flex-end;
    gap: clamp(0.85rem, 1.35vw, 1.45rem);
    width: auto;
    flex: 1 1 auto;
    min-width: 0;
  }

  .site-nav__cta {
    flex-shrink: 0;
    min-height: 2.75rem;
    padding-inline: 1.05rem;
  }

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

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}