:root {
  --color-ink: #18212b;
  --color-muted: #607080;
  --color-line: #d8e0e8;
  --color-soft: #f4f7fa;
  --color-blue: #0b5ed7;
  --color-blue-dark: #06499f;
  --color-teal: #1a8a84;
  --color-white: #fff;
}

* {
  letter-spacing: 0;
}

body {
  color: var(--color-ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  background: var(--color-white);
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:hover {
  color: var(--color-blue-dark);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--color-white);
}

.navbar-brand {
  color: var(--color-ink);
  font-weight: 700;
  font-size: 1rem;
}

.nav-link {
  color: #26323f;
  font-weight: 600;
  font-size: .95rem;
}

.language-switcher {
  display: flex;
  gap: .65rem;
  font-size: .82rem;
}

.language-switcher a {
  color: var(--color-muted);
}

.home-hero {
  padding: 80px 0 56px;
  background:
    linear-gradient(180deg, rgba(244, 247, 250, .95), rgba(255, 255, 255, 1)),
    var(--color-white);
}

.home-hero h1 {
  max-width: 760px;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.12;
  font-weight: 760;
  margin-bottom: 1.25rem;
}

.home-hero p {
  max-width: 680px;
  color: var(--color-muted);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin-top: 2rem;
}

.hero-visual {
  width: 100%;
  min-height: 360px;
  object-fit: contain;
}

.eyebrow {
  color: var(--color-blue);
  font-size: .78rem;
  font-weight: 760;
  text-transform: uppercase;
  margin-bottom: .75rem;
}

.home-band,
.content-section {
  padding: 72px 0;
}

.home-band {
  background: var(--color-soft);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-heading h2,
.page-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.75rem);
  line-height: 1.2;
  font-weight: 740;
}

.capability,
.item-card,
.product-card,
.news-card,
.approved-message {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 8px;
}

.capability {
  padding: 1.5rem;
  min-height: 230px;
}

.capability h3,
.product-card h3,
.news-card h3,
.item-card h2 {
  font-size: 1.12rem;
  line-height: 1.35;
  font-weight: 700;
}

.capability p,
.news-card p,
.item-card p,
.content-body p,
.research-section p {
  color: var(--color-muted);
}

.capability-mark {
  width: 38px;
  height: 6px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-teal));
  border-radius: 4px;
  margin-bottom: 1.25rem;
}

.product-card {
  padding: 1rem;
}

.product-card img,
.item-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: #eef4fa;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.item-card-body {
  padding: 0 1rem 1rem;
}

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

.solution-list a {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
  color: var(--color-ink);
  font-weight: 700;
}

.solution-list a::after {
  content: "→";
  color: var(--color-blue);
}

.research-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-white);
}

.research-metrics div {
  min-height: 150px;
  padding: 1.4rem;
  border-right: 1px solid var(--color-line);
}

.research-metrics div:last-child {
  border-right: 0;
}

.research-metrics strong {
  display: block;
  color: var(--color-blue);
  font-size: 2.2rem;
  line-height: 1;
}

.research-metrics span {
  display: block;
  margin-top: 1rem;
  color: var(--color-muted);
}

.news-card {
  padding: 1.35rem;
}

.news-card time {
  color: var(--color-muted);
  font-size: .9rem;
}

.contact-band {
  background: #17212b;
  color: var(--color-white);
  padding: 56px 0;
}

.contact-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.contact-band h2 {
  max-width: 800px;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.page-hero {
  padding: 68px 0 44px;
  background: var(--color-soft);
  border-bottom: 1px solid var(--color-line);
}

.page-hero p {
  max-width: 760px;
  color: var(--color-muted);
  font-size: 1.1rem;
}

.feature-image {
  max-width: 920px;
  margin-bottom: 2rem;
}

.feature-image img {
  width: 100%;
  max-height: 460px;
  object-fit: contain;
  background: var(--color-soft);
  border: 1px solid var(--color-line);
  border-radius: 8px;
}

.content-body {
  max-width: 900px;
}

.content-body h2 {
  margin-top: 2rem;
  font-size: 1.55rem;
}

.content-body ul {
  padding-left: 1.2rem;
}

.api-form {
  max-width: 900px;
  padding: 1.5rem;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: var(--color-white);
}

.form-status {
  display: inline-block;
  margin-left: 1rem;
  color: var(--color-teal);
  font-weight: 600;
}

.approved-message {
  padding: 1rem;
  margin-bottom: 1rem;
}

.site-footer {
  background: #101820;
  color: #dbe4ef;
  padding: 52px 0 28px;
}

.site-footer h2 {
  color: #fff;
  font-size: 1rem;
}

.footer-brand {
  color: #fff;
  font-weight: 760;
  margin-bottom: .75rem;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer a {
  color: #dbe4ef;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .16);
  margin-top: 2rem;
  padding-top: 1rem;
  color: #9fb0c2;
  font-size: .9rem;
}

@media (max-width: 767px) {
  .home-hero {
    padding-top: 48px;
  }

  .hero-visual {
    min-height: 260px;
  }

  .solution-list,
  .research-metrics {
    grid-template-columns: 1fr;
  }

  .research-metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .research-metrics div:last-child {
    border-bottom: 0;
  }

  .contact-band .container {
    align-items: flex-start;
    flex-direction: column;
  }
}