.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: max(.75rem, env(safe-area-inset-top)) max(1rem, calc((100% - 70rem) / 2));
  border-bottom: 1px solid var(--line);
  background: rgb(251 250 247 / 96%);
}

.site-wordmark {
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -.015em;
  text-decoration: none;
}

.site-menu { position: relative; }
.site-menu summary {
  display: flex;
  min-height: 2.5rem;
  align-items: center;
  gap: .55rem;
  padding: .45rem .7rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  color: var(--ink);
  background: var(--white, #fff);
  cursor: pointer;
  font-size: .85rem;
  font-weight: 700;
  list-style: none;
  user-select: none;
}

.site-menu summary::-webkit-details-marker { display: none; }
.site-menu summary:hover { border-color: var(--accent); color: var(--accent-dark); }
.site-wordmark:focus-visible, .site-menu summary:focus-visible, .site-menu nav a:focus-visible { outline: 4px solid var(--focus); outline-offset: 2px; }
.menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 1rem; height: 2px; background: currentColor; content: ""; }
.menu-icon { position: relative; }
.menu-icon::before { position: absolute; top: -.32rem; left: 0; }
.menu-icon::after { position: absolute; top: .32rem; left: 0; }
.site-menu[open] .menu-icon { background: transparent; }
.site-menu[open] .menu-icon::before { top: 0; transform: rotate(45deg); }
.site-menu[open] .menu-icon::after { top: 0; transform: rotate(-45deg); }
.site-menu nav {
  position: absolute;
  top: calc(100% + .55rem);
  right: 0;
  display: grid;
  width: min(17rem, calc(100vw - 2rem));
  padding: .35rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--white, #fff);
  box-shadow: 0 .75rem 2rem rgb(0 0 0 / 16%);
}

.site-menu:not([open]) nav { display: none; }
.site-menu nav :where(a, span) { padding: .62rem .75rem; border-radius: .25rem; color: var(--muted); font-size: .9rem; font-weight: 700; text-decoration: none; }
.site-menu nav a:hover { color: var(--accent-dark); background: var(--accent-soft, var(--accent-light)); }
.site-menu nav [aria-current="page"] { color: var(--accent-dark); background: var(--accent-soft, var(--accent-light)); }

@media (max-width: 700px) {
  .site-header { padding-inline: max(1rem, env(safe-area-inset-left)) max(1rem, env(safe-area-inset-right)); }
  .site-wordmark { font-size: 1rem; }
}