:root {
  --color-text-primary: #1f2933;
  --color-text-secondary: #52606d;
  --color-background-primary: #ffffff;
  --color-surface: #f6f7f9;
  --color-surface-alt: #eef2f6;
  --color-border: #d9e2ec;
  --color-accent: #0b2a4a;
  --color-accent-soft: rgba(11, 42, 74, 0.06);
  --color-accent-contrast: #ffffff;
  --focus: #2563eb;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 5rem;

  --shadow-soft: 0 10px 24px rgba(17, 24, 39, 0.06);
}

/* =======================================
   Base Reset
========================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  line-height: 1.6;
  font-size: 16px;
  color: var(--color-text-primary);
  background: var(--color-background-primary);
}

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

a {
  color: var(--color-accent);
}

a:hover {
  color: #123b61;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* =======================================
   Typography
========================================== */

h1,
h2,
h3 {
  margin: 0 0 var(--space-3);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(1.9rem, 3.8vw, 3.1rem);
}

h2 {
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

h3 {
  font-size: 1.05rem;
}

p,
ul {
  max-width: 65ch;
}

p {
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-4);
  max-width: 62ch;
  margin-bottom: var(--space-5);
}

.card p,
.principle p,
.featured-case-study p,
.hero-feature p {
  max-width: none;
}

p:last-child,
ul:last-child {
  margin-bottom: 0;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.lead {
  font-size: 1.08rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  max-width: 54ch;
}

.hero__content p:not(.eyebrow):not(.lead) {
  max-width: 58ch;
}

.text-link {
  font-weight: 600;
  text-underline-offset: 0.22em;
}

.text-link:hover,
.text-link:focus-visible {
  text-decoration-thickness: 2px;
}

.hero-feature__eyebrow,
.hero-feature__meta,
.hero-feature__focus {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-feature__eyebrow {
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.hero-feature__meta {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.hero-feature h2 {
  font-size: clamp(1.4rem, 2.3vw, 1.9rem);
  margin-bottom: var(--space-4);
}

.hero-feature__focus {
  color: var(--color-accent);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

/* =======================================
   Layout
========================================== */

.container {
  width: min(1100px, calc(100% - 3rem));
  margin: 0 auto;
}

.hero,
.page-header,
.section {
  padding: var(--space-8) 0;
}

.page-header {
  padding-top: var(--space-9);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--color-border);
}

.page-header .container {
  max-width: 46rem;
  margin: 0 auto;
}

.page-header .lead {
  max-width: 56ch;
}

.page-header .container p:not(.eyebrow):not(.lead) {
  max-width: 58ch;
}

.page-header + .section {
  padding-top: calc(var(--space-8) + 0.5rem);
}

.hero {
  padding-top: var(--space-9);
}

.section--tight-top {
  padding-top: 0;
}

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

.section--bordered {
  border-top: 1px solid var(--color-border);
}

.section-heading {
  max-width: 40rem;
  margin-bottom: clamp(1.5rem, 2.5vw, 2.25rem);
}

.page-header + .section .section-heading {
  max-width: 36rem;
}

.section-heading p:last-child {
  margin-bottom: 0;
}

.section-link-row {
  margin-top: var(--space-5);
}

.grid-2,
.card-grid,
.portfolio-grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2--content {
  align-items: start;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.hero__layout,
.principles,
.principles__grid {
  display: grid;
  gap: var(--space-5);
}

/* Featured Case Study Layout */
.featured-case-study,
.featured-case-study__details {
  display: grid;
  gap: var(--space-5);
}

.featured-case-study {
  padding: clamp(1.5rem, 2vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fbfcfe 0%, #f2f6fa 100%);
  box-shadow: var(--shadow-soft);
}

.featured-case-study__content {
  max-width: 38rem;
}

.featured-case-study__details {
  margin-top: var(--space-5);
}

.featured-case-study__visual {
  align-self: stretch;
}

.case-study,
.case-study__block {
  display: grid;
  gap: var(--space-5);
}

.case-study {
  padding: clamp(1.5rem, 2vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fbfcfe 0%, #f2f6fa 100%);
  box-shadow: var(--shadow-soft);
}

.case-study__content {
  max-width: 40rem;
}

.case-study__visual {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.hero__content {
  max-width: 34rem;
}

.hero-feature {
  align-self: center;
  padding: clamp(1.4rem, 2vw, 2rem);
  border: 1px solid rgba(30, 58, 95, 0.12);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #f4f8fc 0%, #e8f0f7 100%);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.principles__intro {
  max-width: 42rem;
}

.principle {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

/* =======================================
   Shared Site Shell
========================================== */

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -3rem;
  z-index: 100;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-4);
}

.site-header {
  border-bottom: 1px solid rgba(217, 226, 236, 0.18);
  background: var(--color-accent);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.site-header__inner,
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.site-header__inner {
  min-height: 170px;
  padding: 0.75rem 0;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 0;
  color: rgba(255, 255, 255, 0.96);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.logo__image {
  display: block;
  width: auto;
  max-width: 100%;
  height: 150px;
}

.logo__image--footer {
  width: 220px;
  height: auto;
}

.logo:hover,
.logo:focus-visible {
  color: rgba(255, 255, 255, 0.75);
}

.site-header .logo:hover,
.site-header .logo:focus-visible {
  opacity: 0.82;
}

.logo--footer {
  color: var(--color-text-primary);
}

.logo--footer:hover,
.logo--footer:focus-visible {
  color: var(--color-accent);
}

.site-nav__list,
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
}

.site-nav__list {
  justify-content: flex-end;
  align-items: center;
  gap: clamp(0.9rem, 1.8vw, 1.5rem);
  margin: 0;
  padding: 0;
}

.site-footer__nav {
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.96);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.site-footer a {
  color: var(--color-text-primary);
  text-decoration: none;
}

/* Header nav hover (on blue background) */
.site-nav a:hover,
.site-nav a:focus-visible {
  color: rgba(255, 255, 255, 0.75);
}

/* Footer hover (keep original darker tone) */
.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--color-accent);
}

.is-active,
a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 0.35em;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.site-footer__inner {
  align-items: end;
}

.site-footer__inner {
  row-gap: var(--space-4);
}

.site-footer__copy,
.site-footer__legal {
  font-size: 0.95rem;
}

/* =======================================
   Components
========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.8rem 1.2rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  line-height: 1;
  transition:
    transform 120ms ease,
    background-color 120ms ease,
    border-color 120ms ease,
    color 120ms ease;
}

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

.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #123b61;
  color: var(--color-accent-contrast);
}

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

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background: var(--color-accent-soft);
  color: var(--color-text-primary);
}

.card {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background-primary);
  box-shadow: var(--shadow-soft);
}

.card__meta,
.project-focus,
.contact-panel__label {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.project-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.card__meta,
.contact-panel__label {
  margin-bottom: var(--space-3);
}

.section-heading + .case-study {
  margin-bottom: var(--space-7);
}

.service-card p + p {
  margin-top: 0.75rem;
}

.project-focus {
  margin-top: var(--space-4);
}

.contact-panel {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.grid-2--content .contact-panel {
  max-width: 34rem;
}

.values-list {
  list-style: none;
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
}

.values-list li {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 0.45rem;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background-primary);
  box-shadow: var(--shadow-soft);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.values-list li strong {
  display: block;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: 0;
}

.legal-content {
  max-width: 46rem;
}

.legal-content h2 {
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content ul {
  margin-bottom: var(--space-5);
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
}

.legal-content li + li {
  margin-top: var(--space-2);
}

.service-card h2,
.card--project h2 {
  font-size: 1.35rem;
  margin-bottom: var(--space-2);
}

.process-grid {
  gap: var(--space-5);
}
.process-step {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 100%;
}

.process-step h3 {
  margin-bottom: var(--space-3);
}

.featured-case-study__summary {
  font-size: 1.08rem;
  max-width: 54ch;
}

.featured-case-study__label {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.case-study__list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--color-text-secondary);
}

.case-study__list li + li {
  margin-top: 0.5rem;
}

.case-study__block h3 {
  margin-bottom: var(--space-2);
}

.case-study__block + .case-study__block {
  margin-top: var(--space-3);
}

.case-study__block p:last-child,
.case-study__block ul:last-child {
  margin-bottom: 0;
}

.case-study__live-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid rgba(30, 58, 95, 0.12);
  border-radius: calc(var(--radius-lg) - 4px);
  background: #ffffff;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.1);
}

.case-study__live-preview::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: 1;
  height: 1.75rem;
  border-bottom: 1px solid rgba(30, 58, 95, 0.12);
  background:
    radial-gradient(circle at 0.9rem 50%, #ef6a5b 0 0.2rem, transparent 0.22rem),
    radial-gradient(circle at 1.7rem 50%, #e6b84f 0 0.2rem, transparent 0.22rem),
    radial-gradient(circle at 2.5rem 50%, #58aa68 0 0.2rem, transparent 0.22rem),
    #f6f7f9;
}

.case-study__iframe {
  display: block;
  position: absolute;
  top: 1.75rem;
  left: 0;
  width: 250%;
  height: calc(250% - 4.375rem);
  border: 0;
  transform: scale(0.4);
  transform-origin: top left;
  pointer-events: none;
}

.case-study__preview-link {
  align-self: flex-start;
}

.card h3,
.principle h3,
.featured-case-study h3 {
  margin-bottom: var(--space-2);
}

.card p:last-child,
.principle p:last-child,
.featured-case-study p:last-child,
.contact-panel p:last-child,
.case-study__block p:last-child {
  margin-bottom: 0;
}

.featured-case-study__frame {
  height: 100%;
  min-height: 340px;
  padding: var(--space-5);
  border: 1px solid rgba(30, 58, 95, 0.12);
  border-radius: calc(var(--radius-lg) - 4px);
  background: #ffffff;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.1);
}

.featured-case-study__bar {
  height: 0.8rem;
  width: 5rem;
  border-radius: 999px;
  background: rgba(11, 42, 74, 0.1);
  margin-bottom: var(--space-4);
}

.featured-case-study__screen {
  display: grid;
  gap: var(--space-4);
}

.featured-case-study__screen-block {
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #dfe9f3 0%, #eef4f9 100%);
}

.featured-case-study__screen-block--hero {
  min-height: 150px;
}

.featured-case-study__screen-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.featured-case-study__screen-grid span {
  display: block;
  min-height: 82px;
  border-radius: var(--radius-md);
  background: #eef3f8;
}

.featured-case-study__screen-line {
  height: 0.8rem;
  width: 100%;
  border-radius: 999px;
  background: rgba(11, 42, 74, 0.08);
}

.featured-case-study__screen-line--short {
  width: 62%;
}

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

@media (min-width: 769px) {
  .grid-2,
  .card-grid--two,
  .card-grid--services,
  .portfolio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    align-items: center;
  }

  .principles {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }
  
  .principles__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .featured-case-study {
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    align-items: center;
  }

  .featured-case-study__details {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .values-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-study {
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    align-items: center;
  }
}

@media (min-width: 980px) {
  .card-grid--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .logo__image {
    width: auto;
    height: 112px;
  }

  .logo__image--footer {
    width: 190px;
    height: auto;
  }

  .site-header__inner {
    min-height: auto;
    padding-top: 0.75rem;
    padding-bottom: 0.7rem;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav__list {
    justify-content: center;
    gap: var(--space-3);
  }

  .container {
    width: min(1100px, calc(100% - 2rem));
  }
  .hero-feature {
    padding: var(--space-5);
  }

  .principles__grid {
    gap: var(--space-4);
  }

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

  .site-nav__list,
  .site-footer__nav {
    gap: var(--space-3);
  }

  .hero,
  .section {
    padding: var(--space-7) 0;
  }

  .featured-case-study {
    padding: var(--space-5);
  }

  .featured-case-study__frame {
    min-height: 260px;
  }

  .case-study__live-preview {
    aspect-ratio: 16 / 11;
  }

  .hero {
    padding: clamp(4.5rem, 8vw, 6.5rem) 0 clamp(3.5rem, 6vw, 5rem);
  }

  .hero h1 {
    max-width: 15ch;
  }

  .actions--stack-mobile .btn {
    width: 100%;
  }

  .card,
  .contact-panel {
    padding: var(--space-5);
  }
}