.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(244, 248, 255, 0.82);
  border-bottom: 1px solid rgba(35, 59, 130, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-symbol {
  width: 2rem;
  height: 2rem;
  border-radius: 0.75rem;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  color: #fff;
  background: var(--gradient-brand);
  box-shadow: 0 8px 22px rgba(53, 89, 230, 0.3);
}

.brand-text {
  font-size: 1.05rem;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-link {
  font-weight: 500;
  color: #25335f;
}

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--color-line);
  background: #fff;
  border-radius: 999px;
  padding: 0.2rem;
}

.lang-button {
  padding: 0.35rem 0.65rem;
  background: transparent;
  color: #50608f;
}

.lang-button.is-active {
  background: var(--gradient-brand);
  color: #fff;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: var(--space-2xl);
  align-items: center;
  padding-top: var(--space-xl);
}

.hero-copy p {
  max-width: 60ch;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.hero-metrics {
  grid-template-columns: 1fr;
}

.metric {
  padding: var(--space-lg);
}

.metric h3 {
  font-size: 1.8rem;
  margin-bottom: 0.35rem;
}

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

.cards-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card,
.case-card,
.process-step,
.testimonial {
  padding: var(--space-lg);
}

.case-tag {
  display: inline-flex;
  border-radius: 999px;
  font-size: 0.75rem;
  padding: 0.22rem 0.62rem;
  margin-bottom: 0.7rem;
  color: #2d4db8;
  background: rgba(56, 86, 217, 0.1);
}

.step-index {
  display: inline-flex;
  margin-bottom: 0.7rem;
  color: var(--color-secondary);
  font-family: var(--font-display);
  font-weight: 700;
}

.tech-panel {
  padding: var(--space-xl);
}

.tech-tags {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.tech-tag {
  border-radius: 999px;
  border: 1px solid rgba(23, 96, 194, 0.24);
  padding: 0.36rem 0.78rem;
  color: #24406f;
  font-size: 0.9rem;
}

.testimonial blockquote {
  margin: 0 0 var(--space-md);
  font-size: 1.05rem;
  color: #273d6f;
}

.testimonial figcaption {
  font-size: 0.9rem;
  color: #60709a;
}

.downloads {
  padding: var(--space-xl);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.download-actions {
  display: grid;
  gap: 0.65rem;
}

.contact-box {
  padding: clamp(1.4rem, 3vw, 2.2rem);
  background: var(--gradient-deep);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-strong);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.contact-box p,
.contact-box .eyebrow {
  color: rgba(233, 239, 255, 0.88);
}

.contact-actions {
  display: grid;
  gap: var(--space-sm);
}

footer {
  padding: 2rem 0 2.5rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: 0.9rem;
}

@media (max-width: 1000px) {
  .cards-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cards-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-layout,
  .downloads,
  .contact-box {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .cards-2,
  .cards-3,
  .cards-4 {
    grid-template-columns: 1fr;
  }

  main section {
    padding: 2.4rem 0;
  }
}