:root {
  --champagne: #f5f2ed;
  --midnight: #001f33;
  --smoke: #42515a;
  --island-blue: #3688b7;
  --line: rgba(0, 31, 51, 0.14);
  --surface: rgba(255, 255, 255, 0.34);
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--champagne);
  color: var(--midnight);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration-color: rgba(65, 168, 223, 0.6);
  text-underline-offset: 0.22em;
}

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

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.narrow {
  max-width: 900px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(245, 242, 237, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 28px;
  color: var(--smoke);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav a {
  text-decoration: none;
}

.section {
  padding: 88px 0;
  border-bottom: 1px solid var(--line);
}

.hero {
  padding: 120px 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: end;
  gap: 72px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--island-blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 28px;
  font-size: clamp(3.8rem, 10vw, 7.5rem);
  line-height: 0.9;
  letter-spacing: -0.08em;
}

h2 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.03;
  letter-spacing: -0.06em;
}

h3 {
  margin-bottom: 8px;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.hero-statement {
  max-width: 760px;
  color: var(--smoke);
  font-size: clamp(1.18rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  background: var(--midnight);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  background: var(--island-blue);
  color: #fff;
}

.text-link {
  font-weight: 700;
}

.hero-card {
  display: grid;
  gap: 0;
  background: var(--surface);
  border-top: 2px solid var(--midnight);
}

.hero-card span {
  padding: 18px 0 18px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--smoke);
  font-weight: 700;
}

.overview p,
.data-viz p,
.approach p,
.section-intro {
  color: var(--smoke);
  font-size: 1.1rem;
}

.section-intro {
  margin-bottom: 28px;
}

.section-heading {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.case-study-grid {
  display: grid;
  gap: 22px;
}

.case-study {
  padding: 34px 0 10px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
  margin-bottom: 100px;
}

.case-study-header {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 24px;
  margin-bottom: 28px;
}

.case-number {
  color: var(--island-blue);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.role {
  color: var(--smoke);
  font-weight: 700;
}

dl {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin: 0;
}

dt {
  margin-bottom: 8px;
  color: var(--midnight);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

dd {
  margin: 0;
  color: var(--smoke);
}

.detail-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.detail-list div {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.detail-list div:last-child {
  border-bottom: 1px solid var(--line);
}

.thumbnail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.study-thumbnail {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  justify-content: flex-start;
  overflow: hidden;
  padding: 0;
  background-color: rgba(255, 255, 255, 0.32);
  background-image:
    linear-gradient(135deg, rgba(65, 168, 223, 0.18), rgba(0, 31, 51, 0.02)),
    repeating-linear-gradient(90deg, rgba(0, 31, 51, 0.08) 0 1px, transparent 1px 28px);
  border-top: 2px solid var(--midnight);
  color: var(--midnight);
  position: relative;
  text-decoration: none;
}

.study-thumbnail:hover {
  background-color: rgba(255, 255, 255, 0.52);
  color: var(--midnight);
}

.study-thumbnail img {
  display: block;
  width: 100%;
  height: 450px;
  object-fit: cover;
  opacity: 1;
}

.study-thumbnail span {
  display: block;
  padding-right: 22px;
  padding-left: 22px;
  position: relative;
}

.thumbnail-label,
.thumbnail-cta {
  color: var(--island-blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.thumbnail-label {
  padding-top: 18px;
}

.thumbnail-title {
  max-width: 360px;
  padding-top: 8px;
  padding-bottom: 14px;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.thumbnail-cta {
  padding-bottom: 18px;
}

.design-system-alt {
  background-image:
    linear-gradient(135deg, rgba(0, 31, 51, 0.08), rgba(65, 168, 223, 0.12)),
    radial-gradient(circle at 22px 22px, rgba(0, 31, 51, 0.14) 2px, transparent 3px);
  background-size: auto, 30px 30px;
}

.wordpress {
  background-image:
    linear-gradient(135deg, rgba(65, 168, 223, 0.16), rgba(255, 255, 255, 0.08)),
    linear-gradient(rgba(0, 31, 51, 0.08) 1px, transparent 1px);
  background-size: auto, 100% 32px;
}

.wordpress-alt {
  background-image:
    linear-gradient(135deg, rgba(0, 31, 51, 0.07), rgba(65, 168, 223, 0.13)),
    repeating-linear-gradient(0deg, rgba(0, 31, 51, 0.08) 0 1px, transparent 1px 24px);
}

.research {
  background-image:
    linear-gradient(135deg, rgba(65, 168, 223, 0.18), rgba(0, 31, 51, 0.03)),
    radial-gradient(circle at 80% 28%, rgba(65, 168, 223, 0.36) 0 56px, transparent 57px);
}

.research-alt {
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(65, 168, 223, 0.14)),
    repeating-linear-gradient(135deg, rgba(0, 31, 51, 0.08) 0 1px, transparent 1px 18px);
}

.analytics {
  background-image:
    linear-gradient(135deg, rgba(65, 168, 223, 0.14), rgba(0, 31, 51, 0.04)),
    linear-gradient(90deg, transparent 0 18%, rgba(0, 31, 51, 0.12) 18% 19%, transparent 19% 100%),
    linear-gradient(0deg, transparent 0 42%, rgba(0, 31, 51, 0.1) 42% 43%, transparent 43% 100%);
}

.analytics-alt {
  background-image:
    linear-gradient(135deg, rgba(0, 31, 51, 0.06), rgba(65, 168, 223, 0.14)),
    radial-gradient(circle at 22% 34%, rgba(65, 168, 223, 0.28) 0 28px, transparent 29px),
    radial-gradient(circle at 72% 64%, rgba(0, 31, 51, 0.12) 0 42px, transparent 43px);
}

.data-thumbnail-grid {
  margin-top: 28px;
  grid-template-columns: 1fr;
}

.data-thumbnail-grid .study-thumbnail {
  min-height: auto;
}

.data-thumbnail-grid .study-thumbnail img {
  height: auto;
  object-fit: contain;
}

.before-after-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.before-after-gallery figure {
  margin: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.32);
  border-top: 2px solid var(--midnight);
}

.before-after-gallery img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.45);
}

.before-after-gallery figcaption {
  padding: 14px 16px 16px;
  color: var(--smoke);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feature-figure {
  margin: 30px 0 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.32);
  border-top: 2px solid var(--midnight);
}

.feature-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.feature-figure figcaption {
  padding: 16px 18px 18px;
  color: var(--smoke);
  font-size: 0.96rem;
  line-height: 1.55;
}

.prototype-link {
  display: inline-flex;
  margin-top: 20px;
  color: var(--midnight);
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

.principles {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.principles li {
  padding: 0 0 18px 28px;
  border-bottom: 1px solid var(--line);
  color: var(--smoke);
  font-size: 1.08rem;
  position: relative;
}

.principles li::before {
  content: "";
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--island-blue);
}

.site-footer {
  padding: 42px 0;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  color: var(--smoke);
}

.footer-name {
  margin-bottom: 4px;
  color: var(--midnight);
  font-weight: 800;
}

address {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-style: normal;
  font-weight: 700;
}

@media (max-width: 820px) {
  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 14px;
    font-size: 0.85rem;
  }

  .section,
  .hero {
    padding: 68px 0;
  }

  .hero-grid,
  .section-heading,
  .split-section {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-card {
    margin-top: 8px;
  }

  dl {
    grid-template-columns: 1fr 1fr;
  }

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

  .before-after-gallery {
    grid-template-columns: 1fr;
  }

  .detail-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .nav {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 2px;
    white-space: nowrap;
  }

  h1 {
    font-size: clamp(3.25rem, 17vw, 4.6rem);
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .case-study-header,
  dl {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-study {
    padding-top: 28px;
  }
}