:root {
  --tone-900: #1a2b3c;
  --tone-700: #3d5568;
  --tone-500: #5f7385;
  --tone-300: #a8bac8;
  --tone-200: #d8e2ea;
  --tone-100: #eef3f7;
  --tone-50: #f5f8fa;
  --bg: #ffffff;
  --bg-subtle: var(--tone-50);
  --bg-hero: var(--tone-100);
  --text: var(--tone-900);
  --text-muted: var(--tone-500);
  --accent: #2d627d;
  --accent-hover: #234f66;
  --accent-light: #4a849e;
  --accent-soft: rgba(45, 98, 125, 0.1);
  --border: var(--tone-200);
  --shadow-sm: 0 1px 3px rgba(26, 43, 60, 0.05);
  --shadow-md: 0 6px 20px rgba(26, 43, 60, 0.07);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --site-max: 1080px;
  --site-gutter: clamp(1.5rem, 5vw, 3.5rem);
  --radius: 6px;
  --radius-lg: 14px;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body.nav-scroll-lock {
  overflow: hidden;
}

.site-wrap {
  width: 100%;
  max-width: var(--site-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--site-gutter);
  padding-right: var(--site-gutter);
}

/* Header & navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header-main {
  min-height: var(--header-h);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: block;
  padding: 0.5rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-list a:hover {
  color: var(--text);
  background: var(--accent-soft);
}

.nav-list a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: var(--site-gutter);
    right: var(--site-gutter);
    max-width: var(--site-max);
    margin-left: auto;
    margin-right: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 1.25rem 0 1.5rem;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .site-header.nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-header.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .nav-list a {
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
  }
}

/* Hero */

.hero {
  padding: clamp(3rem, 8vw, 5rem) 0;
  text-align: left;
  background:
    radial-gradient(ellipse 70% 55% at 90% 10%, rgba(45, 98, 125, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 45% at 5% 90%, rgba(45, 98, 125, 0.05) 0%, transparent 55%),
    linear-gradient(180deg, var(--bg-hero) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
}

.hero-content {
  min-width: 0;
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .media-slot--hero {
    order: -1;
  }
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  text-wrap: balance;
  color: var(--text);
}

.hero-lede {
  margin: 0 0 2rem;
  font-size: clamp(1.0625rem, 2vw, 1.125rem);
  color: var(--text-muted);
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.6rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
  box-shadow: 0 2px 10px rgba(45, 98, 125, 0.2);
}

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

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

/* Image slots */

.media-slot {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--tone-50) 0%, var(--tone-100) 100%);
  box-shadow: var(--shadow-sm);
}

.media-slot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-slot--hero {
  aspect-ratio: 4 / 3;
  min-height: clamp(16rem, 32vw, 22rem);
}

.media-slot--illustration {
  background: linear-gradient(145deg, var(--tone-50) 0%, var(--tone-100) 55%, var(--tone-200) 100%);
}

.media-slot--illustration img {
  object-fit: contain;
  width: 100%;
  height: 100%;
  transform: scale(1.18);
}

.media-slot--showcase {
  aspect-ratio: 740 / 390;
  min-height: 12rem;
}

.showcase {
  padding: clamp(2rem, 5vw, 3rem) 0 clamp(2.5rem, 6vw, 4rem);
  background: var(--bg);
}

/* Section headings */

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
}

.solutions h2,
.applications h2,
.about h2,
.contact h2 {
  margin: 0 0 1.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.section-head h2 {
  margin-bottom: 0;
}

.section-lede {
  margin: 0;
  font-size: clamp(1.0625rem, 2vw, 1.125rem);
  line-height: 1.7;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .section-head {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

/* Solutions */

.solutions {
  padding: clamp(4rem, 10vw, 6.5rem) 0;
  background: var(--bg);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.solution-card {
  position: relative;
  margin: 0;
  padding: 1.5rem 1.5rem 1.5rem 1.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.solution-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.solution-card:hover {
  transform: translateY(-3px);
  border-color: rgba(45, 98, 125, 0.25);
  box-shadow: var(--shadow-md);
}

.card-top {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.card-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 2.25rem;
  padding: 0 0.5rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
}

.solution-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--text);
}

.solution-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-muted);
}

@media (max-width: 700px) {
  .solutions-grid {
    grid-template-columns: 1fr;
  }
}

/* Applications */

.applications {
  padding: clamp(4rem, 10vw, 6.5rem) 0;
  background: var(--bg-subtle);
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.application-card {
  position: relative;
  margin: 0;
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.application-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-light) 0%, var(--accent) 100%);
}

.application-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-dot {
  display: block;
  width: 0.5rem;
  height: 0.5rem;
  margin-bottom: 1rem;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.application-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

.application-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-muted);
}

@media (max-width: 560px) {
  .applications-grid {
    grid-template-columns: 1fr;
  }
}

/* About */

.about {
  padding: clamp(4rem, 10vw, 6.5rem) 0;
  background: var(--bg);
}

.about p {
  margin: 0 0 1.125rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.75;
  max-width: 42rem;
}

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

/* Contact */

.contact {
  padding: clamp(4rem, 10vw, 6.5rem) 0;
  background: var(--bg-subtle);
}

.contact-intro {
  margin: 0 0 2rem;
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 36rem;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-list .label {
  color: var(--text-muted);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-list a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.15s ease, color 0.15s ease;
  width: fit-content;
}

.contact-list a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.contact-list .value {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.5;
}

@media (max-width: 560px) {
  .contact-list {
    grid-template-columns: 1fr;
  }
}

/* Footer */

.site-footer {
  padding: 1.75rem 0 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.footer-details {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.footer-details span:not(:last-child)::after {
  content: "·";
  margin-left: 0.5rem;
  color: var(--border);
}

.footer-entity {
  font-weight: 600;
  color: var(--text);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  flex-shrink: 0;
}

.footer-nav a {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.copyright {
  margin: 0.85rem 0 0;
  font-size: 0.6875rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  .footer-details {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .footer-details span::after {
    display: none;
  }
}