.header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 15px 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(219, 232, 228, 0.95);
  box-shadow: 0 10px 30px rgba(38, 50, 58, 0.04);
}

.nav {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  width: 124px;
  height: auto;
  display: block;
}

.footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.42);
  padding: 36px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

@media (max-width: 680px) {
  .header {
    position: static;
    padding: 8px 0;
  }

  .nav {
    height: 54px;
  }

  .brand-logo {
    width: 92px;
  }

  .footer {
    font-size: 13px;
    line-height: 1.45;
  }

  .footer-inner {
    display: grid;
    gap: 8px;
  }

  .footer-inner span {
    display: block;
  }
}