.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 40;
  background: transparent;
  border-bottom: 0;
  backdrop-filter: none;
  pointer-events: none;
}

.header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  pointer-events: auto;
}

.brand__logo {
  display: block;
  width: auto;
  height: 82px;
  filter: brightness(0) saturate(100%) invert(100%);
}

.header__actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.link-muted {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.link-muted:hover,
.link-muted:focus-visible {
  color: var(--color-text-heading);
  opacity: 1;
}

.site-header .burger-btn {
  pointer-events: auto;
}

.site-footer {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 6vw, 72px) 0 36px;
  background: radial-gradient(
      circle at top left,
      color-mix(in oklab, var(--color-accent-primary) 16%, transparent),
      transparent 42%
    ),
    radial-gradient(
      circle at top right,
      color-mix(in oklab, var(--color-bg-accent-soft) 72%, transparent),
      transparent 44%
    ),
    linear-gradient(
      180deg,
      color-mix(in oklab, var(--color-bg-surface) 94%, transparent),
      color-mix(in oklab, var(--color-bg) 92%, transparent)
    );
  border-top: 1px solid var(--color-border-default);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      135deg,
      transparent 0 22%,
      color-mix(in oklab, var(--color-text-heading) 7%, transparent) 22% 23%,
      transparent 23% 100%
    ),
    linear-gradient(
      90deg,
      transparent,
      color-mix(in oklab, var(--color-border-default) 46%, transparent),
      transparent
    );
  opacity: 0.42;
  pointer-events: none;
}

.footer__shell {
  position: relative;
  z-index: 1;
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) repeat(2, minmax(220px, 0.8fr));
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid
    color-mix(in oklab, var(--color-border-default) 72%, transparent);
  border-radius: clamp(24px, 3vw, 34px);
  background: linear-gradient(
      180deg,
      color-mix(in oklab, var(--color-bg-surface) 94%, transparent),
      color-mix(in oklab, var(--color-bg-surface) 88%, transparent)
    ),
    color-mix(in oklab, var(--color-bg) 82%, white 18%);
  box-shadow: 0 28px 70px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(18px);
}

.footer__brand {
  display: grid;
  gap: 14px;
  align-content: start;
}

.footer__brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.footer__brand-logo {
  display: block;
  width: auto;
  height: 82px;
  filter: none;
}

.footer__brand-text {
  max-width: 34ch;
  margin: 0;
  color: var(--color-text-secondary);
}

.footer__group {
  display: grid;
  gap: 14px;
  align-content: start;
}

.footer__heading {
  margin: 0;
  color: var(--color-text-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer__nav {
  display: grid;
  gap: 10px;
  align-content: start;
}

.footer__nav .menu {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer__nav .menu-item {
  min-width: 0;
}

.footer__nav a {
  width: fit-content;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.footer__nav a:hover,
.footer__nav a:focus-visible {
  color: var(--color-text-heading);
  transform: translateX(2px);
}

.footer__social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 6px 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  flex-wrap: wrap;
}

.footer__copyright {
  margin: 0;
}

.footer__meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

.footer__photo-credit {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.35;
  font-weight: 600;
  color: var(--color-text-heading);
}

.footer__photo-credit a {
  color: inherit;
  text-underline-offset: 0.16em;
}

.footer__photo-credit a:hover,
.footer__photo-credit a:focus-visible {
  color: var(--color-text-heading);
}

.footer__dev {
  color: var(--color-text-heading);
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.footer__dev:hover,
.footer__dev:focus-visible {
  opacity: 0.72;
  transform: translateY(-1px);
}

@media (max-width: 720px) {
  .header__row {
    padding: 10px 0;
  }

  .brand__logo {
    height: 36px;
  }

  .footer__brand-logo {
    height: 36px;
  }

  .footer__top {
    grid-template-columns: 1fr;
    padding: 22px 18px;
    border-radius: 24px;
  }

  .footer__brand,
  .footer__group,
  .footer__bottom {
    text-align: center;
    justify-items: center;
  }

  .footer__nav a {
    width: auto;
  }

  .footer__social,
  .footer__bottom {
    justify-content: center;
  }

  .footer__meta {
    justify-content: center;
  }
}

.section {
  padding: clamp(48px, 9vw, 120px) 0;
}

.section--why {
  background: linear-gradient(180deg, transparent, var(--color-bg-accent-soft));
}