.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 248, 252, 0.84);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(149, 171, 201, 0.16);
}

.site-header__bar {
  position: relative;
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-nav {
  position: fixed;
  top: calc(var(--header-height) + 12px);
  left: 16px;
  right: 16px;
  display: none;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: 22px;
  background: rgba(255,255,255,0.98);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.site-nav.is-open { display: flex; }
.site-nav a:not(.button) { color: var(--color-text-soft); font-weight: 700; }

.hero {
  padding-top: 40px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 340px;
  background:
    radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.16), transparent 34%),
    radial-gradient(circle at 90% 10%, rgba(6, 182, 212, 0.14), transparent 28%);
  pointer-events: none;
}

.hero > .container,
.services > .container,
.value > .container { position: relative; z-index: 1; }

.stack--hero-copy {
  display: grid;
  gap: var(--space-5);
}

.hero-media {
  display: grid;
  gap: var(--space-4);
}

.value-banner {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
  padding: clamp(24px, 5vw, 40px);
  border-radius: 32px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(8, 26, 51, 0.94), rgba(13, 31, 60, 0.96)),
    url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&q=80&w=1400') center/cover;
  box-shadow: var(--shadow-md);
}

.value-banner__content {
  display: grid;
  gap: var(--space-4);
  color: #fff;
}

.value-banner__content p {
  color: rgba(238, 244, 255, 0.78);
  max-width: 58ch;
}

.value-banner__cta {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
  color: #fff;
}

.value-banner__cta p { color: rgba(238, 244, 255, 0.8); }

.site-footer {
  border-top: 1px solid rgba(149, 171, 201, 0.18);
  padding-block: 28px;
  background: rgba(255,255,255,0.58);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-4);
}

.site-footer__inner p { color: var(--color-text-soft); max-width: 56ch; }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.site-footer__nav a { color: var(--color-text-soft); }

@media (min-width: 48rem) {
  .value-banner__cta {
    max-width: 430px;
  }
}

@media (min-width: 64rem) {
  .site-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-5);
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .hero-media {
    position: relative;
    min-height: 100%;
  }

  .floating-note {
    position: absolute;
    max-width: 280px;
  }

  .floating-note--top {
    top: 24px;
    right: -20px;
  }

  .floating-note--bottom {
    left: -20px;
    bottom: 24px;
  }

  .value-banner {
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 420px);
    align-items: end;
  }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}