.site-header {
  border-bottom: 1px solid #000;
  box-shadow: none;
}

.header-inner {
  min-height: 88px;
  grid-template-columns: minmax(390px, 1fr) auto auto;
}

.brand-lockup {
  gap: 14px;
}

.brand-icon,
.brand-uploaded-logo {
  flex: 0 0 54px;
  width: 54px;
  height: 54px;
}

.brand-icon img,
.brand-lockup > .brand-uploaded-logo {
  width: 54px;
  height: 54px;
  border: 1px solid #000;
  border-radius: 0;
  object-fit: cover;
}

.brand-company-names {
  display: grid;
  min-width: 0;
  color: #000;
  line-height: 1.15;
}

.brand-company-names strong {
  display: block;
  font-family: Arial, "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .02em;
  white-space: nowrap;
}

.brand-company-names strong + strong {
  margin-top: 4px;
  padding-top: 0;
  border-top: 0;
  font-size: 18px;
}

.main-nav {
  height: 88px;
}

.main-nav a {
  padding-inline: 18px;
  color: #000;
  font-size: 17px;
  font-weight: 700;
}

@media (max-width: 1100px) {
  .header-inner {
    grid-template-columns: minmax(330px, 1fr) auto auto;
    gap: 18px;
  }

  .main-nav a {
    padding-inline: 10px;
    font-size: 15px;
  }
}

@media (max-width: 840px) {
  .header-inner {
    min-height: 76px;
    grid-template-columns: 1fr auto;
  }

  .brand-icon,
  .brand-uploaded-logo,
  .brand-icon img,
  .brand-lockup > .brand-uploaded-logo {
    flex-basis: 46px;
    width: 46px;
    height: 46px;
  }

  .brand-company-names strong {
    font-size: 15px;
  }

  .brand-company-names strong + strong {
    margin-top: 3px;
    padding-top: 0;
    font-size: 15px;
  }

  .main-nav {
    height: auto;
  }

  .main-nav a {
    min-height: 52px;
    font-size: 16px;
  }
}

@media (max-width: 560px) {
  .brand-lockup {
    gap: 9px;
  }

  .brand-icon,
  .brand-uploaded-logo,
  .brand-icon img,
  .brand-lockup > .brand-uploaded-logo {
    flex-basis: 40px;
    width: 40px;
    height: 40px;
  }

  .brand-company-names strong,
  .brand-company-names strong + strong {
    font-size: 13px;
  }
}