.shell {
  width: min(100% - 2rem, var(--shell-wide));
  margin-inline: auto;
}

.shell--wide {
  width: min(100% - 2rem, var(--shell-wide));
}

.shell--narrow {
  width: min(100% - 2rem, var(--shell-narrow));
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--ease-standard),
    background var(--duration-fast) var(--ease-standard);
}

.site-header--home {
  background: transparent;
  backdrop-filter: none;
  border-bottom: 0;
  position: absolute;
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
}

.site-brand {
  font-family: var(--font-serif);
  font-size: var(--step-1);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}

.site-nav-toggle {
  display: none;
}

.hero,
.article-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-xl);
  align-items: start;
  margin-bottom: var(--space-3xl);
}

.article-listing {
  margin-bottom: var(--space-3xl);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-l);
}

.article-body {
  margin-bottom: var(--space-2xl);
}

.info-page {
  margin-bottom: var(--space-3xl);
}

.info-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: start;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-m);
  padding-block: var(--space-l);
  border-top: 1px solid var(--color-border);
}