.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.site-header[data-scroll-header] {
  background: rgba(245, 247, 251, 0.72);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled {
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.92);
}

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

.brand {
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.12rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  color: var(--color-primary);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-list a {
  color: var(--color-text-soft);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.is-active {
  color: var(--color-text);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.86);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-text);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.8rem 1.2rem;
  border: 0;
  border-radius: var(--radius-pill);
  font-weight: 700;
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--color-text-inverse);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 16px 32px rgba(23, 105, 255, 0.24);
}

.btn-secondary {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(24, 33, 47, 0.08);
}

.hero-panel,
.card,
.testimonial,
.contact-card,
.metric {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero {
  position: relative;
}

.hero-content {
  max-width: 640px;
}

.hero-copy {
  font-size: var(--text-lg);
  max-width: 56ch;
}

.hero-media img {
  width: 100%;
  height: clamp(220px, 26vw, 340px);
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.card,
.testimonial,
.contact-card,
.metric {
  padding: var(--space-lg);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(23, 105, 255, 0.08);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  font-weight: 800;
}

.metric-value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.45rem + 1vw, 2.25rem);
  color: var(--color-text);
}

.cta-banner {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-lg);
}

.cta-banner p {
  color: rgba(248, 250, 252, 0.76);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.full-span {
  grid-column: 1 / -1;
}

.footer {
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: var(--space-lg);
}

.footer-note {
  padding-top: var(--space-md);
  margin-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 980px) {
  .header-row {
    gap: var(--space-sm);
  }

  .nav-panel {
    position: fixed;
    inset: calc(var(--header-height) - 6px) 1rem auto 1rem;
    padding: 1rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    max-height: calc(100vh - var(--header-height) - 1.5rem);
    overflow: auto;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .menu-toggle {
    display: inline-block;
    flex: 0 0 auto;
  }

  .header-actions {
    display: none;
  }

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

  .hero-content,
  .section-header {
    max-width: none;
  }

  .card,
  .testimonial,
  .contact-card,
  .metric {
    padding: var(--space-md);
  }

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

  .hero-media img {
    height: clamp(220px, 36vw, 300px);
  }
}

@media (max-width: 640px) {
  .card,
  .testimonial,
  .contact-card,
  .metric,
  .cta-banner {
    padding: var(--space-md);
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .button-row .btn {
    width: 100%;
  }

  .btn {
    min-height: 46px;
    padding: 0.8rem 1rem;
  }

  .menu-toggle {
    width: 42px;
    height: 42px;
  }

  .nav-panel {
    inset: calc(var(--header-height) - 6px) 0.625rem auto 0.625rem;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-media img {
    height: 220px;
  }

  .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
  }
}