:root {
  --header-gutter: max(72px, calc((100vw - 1600px) / 2 + 120px));
  --header-height: 70px;
}

.site-header,
.case-header,
.case-nav {
  box-sizing: border-box;
  height: var(--header-height);
  min-height: var(--header-height);
  padding: 0 var(--header-gutter);
  align-items: center;
}

.home-page .site-header:not(.is-scrolled) { border-bottom: 1px solid transparent; }

.site-header,
.case-header,
.case-nav {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  column-gap: 24px;
}

.case-header,
.case-nav { display: grid; }

.site-header .brand,
.case-header .case-brand,
.case-nav .brand {
  justify-self: start;
  width: max-content;
  margin: 0;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 20px;
  font-weight: 850;
  line-height: 1.5;
  letter-spacing: 0;
  white-space: nowrap;
}

.site-header .main-nav,
.case-header nav,
.case-nav .case-nav-links { justify-self: center; }

.site-header .header-link,
.case-header .back,
.case-header .case-back { justify-self: end; }

@media (max-width: 980px) {
  :root { --header-gutter: 18px; --header-height: 65px; }
  .site-header,
  .case-header,
  .case-nav { grid-template-columns: minmax(0, 1fr) auto; column-gap: 12px; }
  .case-header nav { display: none; }
  .site-header .nav-menu-toggle,
  .case-header .back,
  .case-header .case-back,
  .case-nav .case-nav-links { justify-self: end; }
}