.chumbo-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 94%, white);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.site-shell > .chumbo-header { position: sticky; z-index: 50; }
.chumbo-header-inner {
  display: flex;
  width: min(calc(100% - 48px), 1240px);
  min-height: 72px;
  align-items: center;
  gap: clamp(20px, 2.4vw, 36px);
  margin: 0 auto;
}
.chumbo-header-brand { display: inline-flex; flex: none; align-items: center; }
.chumbo-header-brand img { display: block; width: 112px; height: auto; }
.chumbo-header-nav,
.chumbo-header-menu nav { display: flex; align-items: center; gap: clamp(13px, 1.5vw, 24px); }
.chumbo-header-nav a,
.chumbo-header-menu nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font: 500 11px/1.2 var(--mono);
  white-space: nowrap;
}
.chumbo-header-nav a:hover,
.chumbo-header-menu nav a:hover { color: var(--ink); }
.chumbo-header-nav a[aria-current="page"],
.chumbo-header-menu nav a[aria-current="page"] { border-bottom-color: var(--acid); color: var(--ink); font-weight: 700; }
.chumbo-header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.chumbo-header-command {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 7px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  background: var(--paper-bright);
  color: var(--ink);
  font: 500 10px/1 var(--mono);
  white-space: nowrap;
  cursor: pointer;
}
.chumbo-header-command > span:first-child { color: var(--acid-dark); font-weight: 700; }
.chumbo-header-command code { font: inherit; }
.chumbo-header-copy-label { padding-left: 8px; border-left: 1px solid var(--line); color: var(--muted); }
.chumbo-header-command:hover { border-color: var(--ink); }
.chumbo-header-command.is-copied .chumbo-header-copy-label { color: var(--acid-dark); }
.chumbo-header-connect {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 13px;
  border: 1px solid var(--ink);
  background: var(--acid);
  color: var(--ink);
  font: 700 11px/1 var(--mono);
  white-space: nowrap;
}
.chumbo-header-connect:hover { background: var(--acid-soft); }
.chumbo-header-menu { display: none; position: relative; }
.chumbo-header-menu summary {
  display: flex;
  min-height: 40px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  font: 600 11px/1 var(--mono);
  cursor: pointer;
  list-style: none;
}
.chumbo-header-menu summary::-webkit-details-marker { display: none; }
.chumbo-header-menu[open] summary { background: var(--acid-soft); }
.chumbo-header-menu nav {
  position: absolute;
  top: calc(100% + 11px);
  right: 0;
  display: grid;
  min-width: 190px;
  gap: 2px;
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  background: var(--paper-bright);
  box-shadow: 5px 5px 0 var(--acid);
}
.chumbo-header-menu nav a { width: max-content; padding: 10px 0; }
.chumbo-header :focus-visible { outline: 3px solid var(--acid-dark); outline-offset: 3px; }
@media (max-width: 1100px) {
  .chumbo-header-nav, .chumbo-header-command { display: none; }
  .chumbo-header-menu { display: block; }
}
@media (max-width: 520px) {
  .chumbo-header-inner { width: min(calc(100% - 28px), 1240px); min-height: 60px; gap: 8px; }
  .chumbo-header-brand img { width: 92px; }
  .chumbo-header-actions { gap: 7px; }
  .chumbo-header-connect { min-height: 38px; padding: 0 8px; font-size: 10px; }
  .chumbo-header-menu summary { min-height: 38px; padding: 0 8px; font-size: 10px; }
}