.site-nav-desktop { display: none; }
.site-nav-mobile { position: relative; margin-left: 1rem; }
.site-nav-mobile > summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0 0.875rem;
  border: 1px solid #e3e7ef;
  border-radius: 0.5rem;
  background: #fff;
  color: #1a1f2c;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.site-nav-mobile > summary::-webkit-details-marker { display: none; }
.site-nav-mobile > summary::after {
  content: '⌄';
  margin-left: 0;
  color: inherit;
  font-size: 1rem;
}
.site-nav-mobile[open] > summary::after { content: '⌃'; }
.site-nav-mobile nav {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  z-index: 20;
  box-sizing: border-box;
  width: min(18rem, calc(100vw - 3rem));
  max-height: calc(100vh - 6rem);
  max-height: calc(100dvh - 6rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.375rem;
  border: 1px solid #e3e7ef;
  border-radius: 0.75rem;
  background: #fff;
  box-shadow: 0 8px 24px rgba(20, 28, 48, 0.12);
}
.site-nav-mobile nav a {
  display: flex;
  align-items: center;
  box-sizing: border-box;
  min-height: 44px;
  padding: 0.625rem 0.875rem;
  border-radius: 0.375rem;
  color: #4a5263;
  font-size: 0.875rem;
  line-height: 1.5;
  text-decoration: none;
}
.site-nav-mobile nav a:hover { background: #f1f3f7; }
.site-nav-mobile nav a[aria-current="page"] {
  background: #e6ecf6;
  color: #1d4180;
  font-weight: 600;
}
.site-nav-mobile > summary:focus-visible,
.site-nav-mobile nav a:focus-visible {
  outline: 2px solid #1d4180;
  outline-offset: 2px;
}
@media (min-width: 768px) {
  .site-nav-desktop { display: flex; }
  .site-nav-mobile { display: none; }
}