.container-page {
  width: min(100% - 40px, 1240px);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  backdrop-filter: blur(18px);
}

.footer {
  --footer-bg:
    radial-gradient(circle at 78% 16%, rgba(122, 171, 204, 0.18), transparent 30%),
    radial-gradient(circle at 18% 86%, rgba(128, 189, 255, 0.16), transparent 34%),
    linear-gradient(135deg, #123675 0%, #123675 48%, #123675 78%, #123675 100%);
  --footer-heading: #FFFFFF;
  --footer-text: rgba(255, 255, 255, 0.86);
  --footer-text-strong: #FFFFFF;
  --footer-border: rgba(255, 255, 255, 0.24);
  --footer-bottom-text: rgba(255, 255, 255, 0.76);
  --footer-link-bottom: rgba(255, 255, 255, 0.9);
  --footer-link-hover: #FFFFFF;
  padding-top: clamp(1.8rem, 3vw, 2.6rem);
  background: var(--footer-bg);
  color: var(--footer-text);
  border-top: 1px solid var(--footer-border);
  backdrop-filter: blur(18px);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(250px, 1.4fr) repeat(3, minmax(140px, 0.9fr)) minmax(250px, 1.15fr);
  gap: clamp(1.75rem, 3vw, 2.75rem);
  align-items: start;
}

.footer-brand {
  text-align: left;
}

.footer-logo {
  width: 88px;
  height: auto;
  margin-bottom: 2.3rem;
}

.footer h3 {
  margin: 0 0 1.35rem;
  color: var(--footer-heading);
  font-size: 0.9rem;
  line-height: 1.35;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer h3 a {
  display: inline;
  margin: 0;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  line-height: inherit;
  text-transform: inherit;
}

.footer h3 a:hover,
.footer h3 a:focus-visible {
  color: inherit;
}

.footer p,
.footer a {
  color: var(--footer-text);
  font-size: 0.94rem;
  line-height: 1.62;
}

.footer p {
  margin: 0;
}

.footer p + p {
  margin-top: 1rem;
}

.footer em {
  color: var(--footer-text-strong);
  font-style: italic;
}

.footer a {
  display: block;
  margin-bottom: 0.78rem;
}

.footer a:hover,
.footer a:focus-visible {
  color: var(--footer-link-hover);
}

.footer-mobile-primary {
  display: none;
}

.footer-certifications img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.footer-certifications {
  width: 100%;
  min-width: 0;
  justify-self: stretch;
}

.footer-member-logos,
.footer-certification-logos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  justify-items: center;
  gap: 1rem;
}

.footer-member-logos {
  min-height: 68px;
  margin-top: 0.4rem;
}

.footer-member-logos a {
  width: 100%;
  min-height: 68px;
  display: grid;
  place-items: center;
  margin: 0;
}

.footer-member-logos a:nth-child(2) {
  margin-left: 0;
}

.footer-member-logos img {
  max-width: 88px;
  max-height: 58px;
}

.footer-certification-logos {
  grid-template-columns: minmax(0, 1fr);
  min-height: 92px;
  margin-top: 1.1rem;
}

.footer-certification-logos img {
  width: auto;
  max-width: min(100%, 190px);
  max-height: 92px;
}

.footer-member-logos img,
.footer-certification-logos img {
  filter: drop-shadow(0 8px 18px rgba(18, 54, 117, 0.18));
}

.socials {
  display: flex;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.socials a {
  width: 34px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-bottom: 0;
  border: 1px solid var(--footer-border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: clamp(1.6rem, 3vw, 2.4rem);
  padding: 0.9rem 0 0.85rem;
  border-top: 1px solid var(--footer-border);
  color: var(--footer-bottom-text);
  font-size: 0.82rem;
}

.footer-bottom nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.45rem;
  align-items: center;
}

.footer-bottom a {
  margin: 0;
  color: var(--footer-link-bottom);
  font-size: 0.9rem;
  line-height: 1.4;
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  width: 48px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: #123675;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.52);
  box-shadow: 0 16px 34px rgba(18, 54, 117, 0.28);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(0);
}