:root {
  --ink: #0b1b30;
  --blue: #255579;
  --paper: #f3f1ea;
  --white: #ffffff;
  --muted: #66727d;
  --line: #cfd5d7;
  --signal: #8fc9ca;
  --header-height: 78px;
  --gutter: clamp(22px, 5vw, 72px);
  --max-width: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Tahoma, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 9px 13px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--gutter);
  background: rgba(243, 241, 234, 0.96);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(11, 27, 48, 0.14);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
}

.brand b {
  color: var(--blue);
  font-weight: 400;
}

.brand-logo {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  object-fit: contain;
}

.site-header .brand-logo {
  width: 45px;
  height: 45px;
  mix-blend-mode: multiply;
}

.site-header .brand {
  gap: 14px;
  font-size: 1.5rem;
  line-height: 1;
}

.site-header .brand-wordmark {
  width: 190px;
  height: 54px;
  object-fit: cover;
  object-position: center;
}

.site-nav {
  display: flex;
  gap: clamp(22px, 3vw, 42px);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav a {
  padding: 8px 0;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--blue);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 0;
}

.nav-toggle > span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 1px;
  margin: 7px auto;
  background: currentColor;
}

.hero,
.about-section,
.research-section,
.process-section,
.contact-section,
.site-footer {
  padding-right: var(--gutter);
  padding-left: var(--gutter);
}

.hero {
  display: flex;
  align-items: center;
  min-height: 720px;
  padding-top: calc(var(--header-height) + 90px);
  padding-bottom: 86px;
  background:
    linear-gradient(90deg, rgba(243, 241, 234, 0.92) 0%, rgba(243, 241, 234, 0.62) 52%, rgba(243, 241, 234, 0.12) 100%),
    url("/ocean-waves.png") center bottom / cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 1120px;
}

.eyebrow {
  margin: 0 0 18px;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.contact-section h2 {
  margin: 0;
  font-weight: 400;
  letter-spacing: -0.045em;
}

.hero h1 {
  max-width: 1100px;
  font-size: clamp(3.5rem, 6vw, 6.35rem);
  line-height: 0.98;
}

.text-link,
.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 44px;
  min-width: 220px;
  padding: 11px 0;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-bottom: 1px solid currentColor;
}

.about-section,
.research-section,
.process-section {
  padding-top: 100px;
  padding-bottom: 100px;
}

.about-section {
  background: var(--white);
}

.research-section {
  background: #f7f7f5;
  border-top: 1px solid var(--line);
}

.about-layout {
  display: grid;
  grid-template-columns: 0.32fr 1.7fr;
  gap: clamp(36px, 6vw, 90px);
  max-width: var(--max-width);
  margin: 0 auto;
}

.about-layout > .eyebrow {
  margin-top: 8px;
}

.about-copy {
  max-width: 960px;
}

.about-copy p {
  max-width: 830px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.2vw, 1.08rem);
  line-height: 1.7;
}

.about-copy p + p {
  margin-top: 28px;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.32fr 1fr 0.7fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: end;
  max-width: var(--max-width);
  margin: 0 auto 62px;
}

.section-heading-title {
  display: block;
  margin-bottom: 52px;
}

.section-heading .eyebrow {
  margin-bottom: 10px;
}

.section-heading h2,
.contact-section h2 {
  font-size: clamp(2.8rem, 4.8vw, 5.2rem);
  line-height: 1;
}

.section-heading > p:last-child {
  max-width: 380px;
  margin: 0 0 8px;
  color: var(--muted);
}

.capability-list {
  max-width: var(--max-width);
  margin: 0 auto;
}

.capability-list {
  border-top: 1px solid var(--ink);
}

.capability-list article {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(30px, 4.5vw, 72px);
  align-items: start;
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}

.process-list span {
  color: var(--blue);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.capability-copy h3,
.process-list h3 {
  margin: 0;
  font-size: clamp(1.45rem, 2.2vw, 2.25rem);
  font-weight: 400;
}

.capability-copy p {
  max-width: 420px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.research-figure {
  min-width: 0;
  margin: 0;
  padding: 17px 18px 12px;
  background: #f6f7f6;
  border: 1px solid #dfe3e3;
}

.research-figure figcaption {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.research-figure svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.research-figure svg text {
  fill: #63717b;
  font-family: Tahoma, Arial, sans-serif;
  font-size: 9px;
  letter-spacing: 0.05em;
}

.chart-axis {
  stroke: #aeb9bd;
  stroke-width: 1;
}

.chart-block {
  stroke: rgba(11, 27, 48, 0.15);
  stroke-width: 1;
}

.chart-block-1 { fill: #174568; }
.chart-block-2 { fill: #4f7894; }
.chart-block-3 { fill: #8db1ba; }

.chart-line {
  fill: none;
  stroke: #174568;
  stroke-width: 2.2;
}

.chart-line-muted {
  stroke: #8db1ba;
  stroke-dasharray: 5 4;
  stroke-width: 1.7;
}

.chart-line-convex {
  stroke-width: 2.6;
}

.chart-point {
  fill: #174568;
}

.research-figure svg .chart-label {
  fill: #174568;
  font-size: 8px;
}

.research-figure svg .chart-label-muted {
  fill: #728a96;
}

.process-section {
  color: var(--ink);
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: var(--max-width);
  padding: 0;
  margin: 0 auto;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.process-list li {
  position: relative;
  min-height: 190px;
  padding: 26px clamp(18px, 2.5vw, 34px) 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.process-list li:last-child {
  border-right: 0;
}

.process-list h3 {
  margin-top: 38px;
}

.process-list p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.contact-section {
  padding-top: 94px;
  padding-bottom: 94px;
}

.contact-block {
  max-width: var(--max-width);
  margin: 0 auto;
}

.contact-link {
  min-width: 340px;
  margin-top: 28px;
  font-size: 0.82rem;
  letter-spacing: 0;
}

.site-footer {
  display: grid;
  grid-template-columns: 0.7fr 1.2fr 0.7fr;
  gap: 7vw;
  align-items: start;
  padding-top: 46px;
  padding-bottom: 46px;
  color: rgba(255, 255, 255, 0.68);
  background: #071524;
  font-size: 0.7rem;
}

.brand-footer {
  color: var(--white);
}

.brand-footer .brand-logo {
  filter: grayscale(1) invert(1) contrast(2);
  mix-blend-mode: screen;
}

.brand-footer .brand-wordmark {
  width: 152px;
  height: 44px;
  object-fit: cover;
  object-position: center;
}

.site-footer > p {
  max-width: 560px;
  margin: 0;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

@media (max-width: 900px) {
  .hero {
    min-height: 0;
    padding-top: calc(var(--header-height) + 76px);
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .capability-list article {
    grid-template-columns: minmax(260px, 0.75fr) minmax(330px, 1fr);
    gap: 28px;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .process-list li:nth-child(2) {
    border-right: 0;
  }

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

  .footer-meta {
    grid-column: 2;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 72px;
  }

  .site-header {
    padding-right: 20px;
    padding-left: 20px;
  }

  .brand-logo {
    width: 28px;
    height: 28px;
  }

  .site-header .brand-logo {
    width: 42px;
    height: 42px;
  }

  .site-header .brand {
    gap: 12px;
    font-size: 1.35rem;
  }

  .site-header .brand-wordmark {
    width: 160px;
    height: 46px;
  }

  .nav-toggle {
    position: relative;
    z-index: 102;
    display: block;
  }

  .nav-toggle[aria-expanded="true"] > span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] > span:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 101;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 10px;
    padding: 78px 22px;
    color: var(--white);
    background: var(--ink);
    visibility: hidden;
    opacity: 0;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
  }

  .site-nav a {
    font-size: clamp(2.2rem, 11vw, 3.4rem);
    font-weight: 400;
    letter-spacing: -0.04em;
    text-transform: none;
  }

  .hero {
    padding-top: calc(var(--header-height) + 56px);
    padding-bottom: 62px;
    background-position: 58% bottom;
  }

  .hero h1 {
    font-size: clamp(2.85rem, 12vw, 4rem);
  }

  .about-section,
  .research-section,
  .process-section {
    padding-top: 66px;
    padding-bottom: 66px;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading h2,
  .contact-section h2 {
    font-size: clamp(2.55rem, 12vw, 3.7rem);
  }

  .capability-list article {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 24px 0;
  }

  .capability-copy {
    grid-column: auto;
  }

  .research-figure {
    grid-column: auto;
    margin-top: 14px;
  }

  .about-copy p {
    font-size: 0.93rem;
  }

  .about-copy p + p {
    margin-top: 22px;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .process-list li {
    min-height: 0;
    padding: 22px 0;
    border-right: 0;
  }

  .process-list h3 {
    margin-top: 22px;
  }

  .contact-section {
    gap: 42px;
    padding-top: 66px;
    padding-bottom: 66px;
  }

  .contact-link {
    min-width: 100%;
    font-size: 0.76rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-meta {
    grid-column: auto;
    align-items: flex-start;
  }
}

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