:root {
  --background: #F7F8FA;
  --surface: #FFFFFF;
  --navy: #061B2D;
  --secondary: #5D6975;
  --accent: #3D6FA6;
  --border: #DCE3EA;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--navy);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: 0.9rem;
  left: 0.9rem;
  z-index: 30;
  transform: translateY(-160%);
  padding: 0.65rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--navy);
}

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

.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;
}

.site-shell {
  width: min(1100px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 248, 250, 0.96);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand,
.footer-logo {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand img {
  width: 148px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 1.9rem);
  color: var(--secondary);
  font-size: 0.88rem;
  font-weight: 520;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--navy);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.hero {
  background: var(--background);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  padding: clamp(7rem, 12vw, 10.5rem) 0 clamp(6rem, 9vw, 8rem);
}

.eyebrow,
.section-label {
  margin: 0 0 1.15rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(3rem, 5vw, 4rem);
  line-height: 1.08;
  font-weight: 580;
  letter-spacing: 0;
}

.hero-body {
  max-width: 680px;
  margin: 2rem 0 0;
  color: var(--secondary);
  font-size: clamp(1.08rem, 1.45vw, 1.22rem);
  line-height: 1.72;
}

.about-line {
  max-width: 680px;
  margin: 1rem 0 0;
  color: var(--secondary);
  font-size: clamp(1.02rem, 1.25vw, 1.12rem);
  line-height: 1.72;
}

.hero-support {
  max-width: 680px;
  margin: 2rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
  font-size: clamp(1rem, 1.2vw, 1.08rem);
  font-weight: 560;
}

.section {
  padding: clamp(4.8rem, 8vw, 7rem) 0;
}

.focus-section,
.contact-section,
.site-footer {
  background: var(--surface);
}

.section-heading {
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 3rem);
  line-height: 1.15;
  font-weight: 570;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 0.8rem;
  font-size: 1.06rem;
  line-height: 1.35;
  font-weight: 620;
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--border);
}

.focus-item {
  padding: clamp(1.55rem, 2.3vw, 2.15rem) clamp(1.2rem, 2.1vw, 1.85rem) clamp(2rem, 3vw, 2.6rem) 0;
  border-bottom: 1px solid var(--border);
}

.focus-item + .focus-item {
  padding-left: clamp(1.2rem, 2.1vw, 1.85rem);
  border-left: 1px solid var(--border);
}

.item-index {
  display: block;
  margin-bottom: 2rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.12em;
}

.focus-item p,
.engineering-copy p,
.contact-details,
.site-footer {
  color: var(--secondary);
}

.focus-item p,
.engineering-copy p {
  margin: 0;
  line-height: 1.7;
}

.engineering-section {
  background: var(--background);
  border-block: 1px solid var(--border);
}

.engineering-inner {
  display: block;
}

.engineering-copy p {
  max-width: 660px;
  margin-top: 1.5rem;
  font-size: clamp(1.02rem, 1.25vw, 1.14rem);
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}

.contact-section h2 {
  max-width: 440px;
  font-size: clamp(1.8rem, 2.6vw, 2.55rem);
}

.contact-details {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.contact-details p {
  margin: 0;
}

.email-link {
  color: var(--navy);
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  line-height: 1.2;
  font-weight: 560;
}

.contact-details dl {
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-details dt {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-details dd {
  margin: 0.4rem 0 0;
  color: var(--navy);
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  padding: 1.35rem 0;
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 2rem;
  align-items: center;
  color: var(--secondary);
  font-size: 0.82rem;
  line-height: 1.55;
}

.footer-logo img {
  width: 106px;
  height: auto;
}

.site-footer p {
  margin: 0.24rem 0;
}

.site-footer a {
  color: var(--navy);
}

@media (max-width: 900px) {
  .focus-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .focus-item {
    padding-left: 0;
  }

  .focus-item + .focus-item {
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .site-shell {
    width: calc(100% - 32px);
  }

  .header-inner {
    min-height: 88px;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 0.65rem;
  }

  .brand img {
    width: 132px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.75rem;
    font-size: 0.84rem;
  }

  .hero-inner {
    padding: 4.7rem 0 4.6rem;
  }

  h1 {
    font-size: clamp(2.15rem, 10vw, 2.65rem);
  }

  .hero-body {
    margin-top: 1.5rem;
  }

  .section {
    padding: 4.2rem 0;
  }

  .contact-details dl,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    gap: 1.2rem;
  }
}